201301  
题目:   作者:   发表日期范围:   至:  
关键字:   摘要:   基金:     
   1. Analysis of Regression Method on Traffic Incident Duration Prediction
    作者姓名: Xuanqiang Wang, Shuyan Chen, and Wenchang Zheng  
  摘要:   The prediction of the incident duration is a very important issue to the advanced traffic incident management. An accurate prediction of incident duration contributes a lot to making appropriate decisions to deal with incidents for traffic managers and getting traffic information for travelers timely. The paper analyzes several regression methods, such as the stepwise regression (SR), the principal component regression (PCR), partial least square regression (PLSR), and builds model between incident duration and its influence factors. The models were established for three types of incident correspondingly, i.e. stopped vehicle, lost load and accident. The models got the best prediction accuracy of 83.6%, 92.7%, and 88.2% for stopped vehicle, lost-load and accident at error for 20 minutes, respectively. The results indicated that the regression method has a promising application to predict incident duration and the PCR and the PLSR have a better performance.  
  关键词: Incident Management, Incident Duration, principal component regression, Partial Least Squares Regression.  
  下载:         下载 [6 ]  
  vol   1 (1)  :
 
   2. Analysis of Regression Method on Traffic Incident Duration Prediction
    作者姓名: Xuanqiang Wang, Shuyan Chen, and Wenchang Zheng  
  摘要:   The prediction of the incident duration is a very important issue to the advanced traffic incident management. An accurate prediction of incident duration contributes a lot to making appropriate decisions to deal with incidents for traffic managers and getting traffic information for travelers timely. The paper analyzes several regression methods, such as the stepwise regression (SR), the principal component regression (PCR), partial least square regression (PLSR), and builds model between incident duration and its influence factors. The models were established for three types of incident correspondingly, i.e. stopped vehicle, lost load and accident. The models got the best prediction accuracy of 83.6%, 92.7%, and 88.2% for stopped vehicle, lost-load and accident at error for 20 minutes, respectively. The results indicated that the regression method has a promising application to predict incident duration and the PCR and the PLSR have a better performance.  
  关键词: Incident Management, Incident Duration, principal component regression, Partial Least Squares Regression.  
  下载:         下载 [6 ]  
  vol   1 (1)  :
 
   3. Analysis of Regression Method on Traffic Incident Duration Prediction
    作者姓名: Xuanqiang Wang, Shuyan Chen, and Wenchang Zheng  
  摘要:   The prediction of the incident duration is a very important issue to the advanced traffic incident management. An accurate prediction of incident duration contributes a lot to making appropriate decisions to deal with incidents for traffic managers and getting traffic information for travelers timely. The paper analyzes several regression methods, such as the stepwise regression (SR), the principal component regression (PCR), partial least square regression (PLSR), and builds model between incident duration and its influence factors. The models were established for three types of incident correspondingly, i.e. stopped vehicle, lost load and accident. The models got the best prediction accuracy of 83.6%, 92.7%, and 88.2% for stopped vehicle, lost-load and accident at error for 20 minutes, respectively. The results indicated that the regression method has a promising application to predict incident duration and the PCR and the PLSR have a better performance.  
  关键词: Incident Management, Incident Duration, principal component regression, Partial Least Squares Regression.  
  下载:         下载 [6 ]  
  vol   1 (1)  :
 
   4. Analysis of Regression Method on Traffic Incident Duration Prediction
    作者姓名: Xuanqiang Wang, Shuyan Chen, and Wenchang Zheng  
  摘要:   The prediction of the incident duration is a very important issue to the advanced traffic incident management. An accurate prediction of incident duration contributes a lot to making appropriate decisions to deal with incidents for traffic managers and getting traffic information for travelers timely. The paper analyzes several regression methods, such as the stepwise regression (SR), the principal component regression (PCR), partial least square regression (PLSR), and builds model between incident duration and its influence factors. The models were established for three types of incident correspondingly, i.e. stopped vehicle, lost load and accident. The models got the best prediction accuracy of 83.6%, 92.7%, and 88.2% for stopped vehicle, lost-load and accident at error for 20 minutes, respectively. The results indicated that the regression method has a promising application to predict incident duration and the PCR and the PLSR have a better performance.  
  关键词: Incident Management, Incident Duration, principal component regression, Partial Least Squares Regression.  
  下载:         下载 [6 ]  
  vol   1 (1)  :
 
   5. Multi-Resolution Traffic Simulation Modeling Based on Object-Oriented Design Pattern by UML
    作者姓名: Jian Ma, Liyan Zhang, Keping Li, and Congkun Zhu  
  摘要:   The paper introduces Model-View-Controller (MVC) pattern, Factory Method Pattern (FMP) and Strategy Pattern (SP) into hybrid traffic simulation modeling based on Multi-Resolution Modeling (MRM). It designs the framework of Traffic Multi-Resolution Simulation System (TMRSS) using MRM theory and develops the architecture of TMRSS based on MVC pattern.In addition, it founds the data structure models of TMRSS which include route, segment and event structure. They are implemented by the FMP and SP, respectively. Furthermore, the paper presents four patterns to implement structures of data and logic, which include framework design, architecture design and data structure design in TMRSS. Finally, a case is exemplified to prove that the architecture and structure are available, suitable and scalable in TMRSS.  
  关键词: Hybrid traffic simulation, Multi-resolution simulation, Model-View-Controller, Factory method pattern, Strategy pattern  
  下载:         下载 [6 ]  
  vol   1 (1)  :1
 
   6. Multi-Resolution Traffic Simulation Modeling Based on Object-Oriented Design Pattern by UML
    作者姓名: Jian Ma, Liyan Zhang, Keping Li, and Congkun Zhu  
  摘要:   The paper introduces Model-View-Controller (MVC) pattern, Factory Method Pattern (FMP) and Strategy Pattern (SP) into hybrid traffic simulation modeling based on Multi-Resolution Modeling (MRM). It designs the framework of Traffic Multi-Resolution Simulation System (TMRSS) using MRM theory and develops the architecture of TMRSS based on MVC pattern.In addition, it founds the data structure models of TMRSS which include route, segment and event structure. They are implemented by the FMP and SP, respectively. Furthermore, the paper presents four patterns to implement structures of data and logic, which include framework design, architecture design and data structure design in TMRSS. Finally, a case is exemplified to prove that the architecture and structure are available, suitable and scalable in TMRSS.  
  关键词: Hybrid traffic simulation, Multi-resolution simulation, Model-View-Controller, Factory method pattern, Strategy pattern  
  下载:         下载 [6 ]  
  vol   1 (1)  :1
 
   7. Multi-Resolution Traffic Simulation Modeling Based on Object-Oriented Design Pattern by UML
    作者姓名: Jian Ma, Liyan Zhang, Keping Li, and Congkun Zhu  
  摘要:   The paper introduces Model-View-Controller (MVC) pattern, Factory Method Pattern (FMP) and Strategy Pattern (SP) into hybrid traffic simulation modeling based on Multi-Resolution Modeling (MRM). It designs the framework of Traffic Multi-Resolution Simulation System (TMRSS) using MRM theory and develops the architecture of TMRSS based on MVC pattern.In addition, it founds the data structure models of TMRSS which include route, segment and event structure. They are implemented by the FMP and SP, respectively. Furthermore, the paper presents four patterns to implement structures of data and logic, which include framework design, architecture design and data structure design in TMRSS. Finally, a case is exemplified to prove that the architecture and structure are available, suitable and scalable in TMRSS.  
  关键词: Hybrid traffic simulation, Multi-resolution simulation, Model-View-Controller, Factory method pattern, Strategy pattern  
  下载:         下载 [6 ]  
  vol   1 (1)  :1
 
   8. Multi-Resolution Traffic Simulation Modeling Based on Object-Oriented Design Pattern by UML
    作者姓名: Jian Ma, Liyan Zhang, Keping Li, and Congkun Zhu  
  摘要:   The paper introduces Model-View-Controller (MVC) pattern, Factory Method Pattern (FMP) and Strategy Pattern (SP) into hybrid traffic simulation modeling based on Multi-Resolution Modeling (MRM). It designs the framework of Traffic Multi-Resolution Simulation System (TMRSS) using MRM theory and develops the architecture of TMRSS based on MVC pattern.In addition, it founds the data structure models of TMRSS which include route, segment and event structure. They are implemented by the FMP and SP, respectively. Furthermore, the paper presents four patterns to implement structures of data and logic, which include framework design, architecture design and data structure design in TMRSS. Finally, a case is exemplified to prove that the architecture and structure are available, suitable and scalable in TMRSS.  
  关键词: Hybrid traffic simulation, Multi-resolution simulation, Model-View-Controller, Factory method pattern, Strategy pattern  
  下载:         下载 [6 ]  
  vol   1 (1)  :1
 
   9. Research on Traffic Flow Simulation Model with Multi-Agent Based in Vehicular Sensor Network
    作者姓名: Zhao-Sheng Yang, Yao Yu, and Xiang-Lun Mo  
  摘要:   A Vehicle can be represented as an autonomous simulated agent, which is can be efficiently analyzed the vehicular behaviors and the dynamic performance of traffic flow by using Multi-agent system. In this article, a new microscopic vehicular behavior mechanism is proposed based on multi-agent in VSN (vehicular sensor network) circumstance. Different from the traditional vehicle-following principles, the vehicle agent considering the behavioral decision influence by interactive communication of the signalized intersection-vehicle and vehicle-vehicle (ad hoc). The underlying idea is to establish single-lane traffic simulation model on the basis of the influence of the VSN. According to the proposed approach, the decision of the acceleration or deceleration rate by vehicle agent will be altered depend on the front signal phase. In this occasion, the simulations respectively verify the model on microscopic level and macroscopic level in order to analyze the time-space distribution characteristics of the vehicles by interactive information influence. And the result show the proposed mechanism and model can provide better performance than the classic vehicle following model in traditional circumstance. Moreover, the effectiveness of this model is illustrated in the simulation test, which is reproducing the realistic traffic states in VSN.  
  关键词: Multi-agent; VSN; behavior mechanism ; traffic flow model  
  下载:         下载 [6 ]  
  vol   1 (1)  :7
 
   10. Research on Traffic Flow Simulation Model with Multi-Agent Based in Vehicular Sensor Network
    作者姓名: Zhao-Sheng Yang, Yao Yu, and Xiang-Lun Mo  
  摘要:   A Vehicle can be represented as an autonomous simulated agent, which is can be efficiently analyzed the vehicular behaviors and the dynamic performance of traffic flow by using Multi-agent system. In this article, a new microscopic vehicular behavior mechanism is proposed based on multi-agent in VSN (vehicular sensor network) circumstance. Different from the traditional vehicle-following principles, the vehicle agent considering the behavioral decision influence by interactive communication of the signalized intersection-vehicle and vehicle-vehicle (ad hoc). The underlying idea is to establish single-lane traffic simulation model on the basis of the influence of the VSN. According to the proposed approach, the decision of the acceleration or deceleration rate by vehicle agent will be altered depend on the front signal phase. In this occasion, the simulations respectively verify the model on microscopic level and macroscopic level in order to analyze the time-space distribution characteristics of the vehicles by interactive information influence. And the result show the proposed mechanism and model can provide better performance than the classic vehicle following model in traditional circumstance. Moreover, the effectiveness of this model is illustrated in the simulation test, which is reproducing the realistic traffic states in VSN.  
  关键词: Multi-agent; VSN; behavior mechanism ; traffic flow model  
  下载:         下载 [6 ]  
  vol   1 (1)  :7
 
   11. Research on Traffic Flow Simulation Model with Multi-Agent Based in Vehicular Sensor Network
    作者姓名: Zhao-Sheng Yang, Yao Yu, and Xiang-Lun Mo  
  摘要:   A Vehicle can be represented as an autonomous simulated agent, which is can be efficiently analyzed the vehicular behaviors and the dynamic performance of traffic flow by using Multi-agent system. In this article, a new microscopic vehicular behavior mechanism is proposed based on multi-agent in VSN (vehicular sensor network) circumstance. Different from the traditional vehicle-following principles, the vehicle agent considering the behavioral decision influence by interactive communication of the signalized intersection-vehicle and vehicle-vehicle (ad hoc). The underlying idea is to establish single-lane traffic simulation model on the basis of the influence of the VSN. According to the proposed approach, the decision of the acceleration or deceleration rate by vehicle agent will be altered depend on the front signal phase. In this occasion, the simulations respectively verify the model on microscopic level and macroscopic level in order to analyze the time-space distribution characteristics of the vehicles by interactive information influence. And the result show the proposed mechanism and model can provide better performance than the classic vehicle following model in traditional circumstance. Moreover, the effectiveness of this model is illustrated in the simulation test, which is reproducing the realistic traffic states in VSN.  
  关键词: Multi-agent; VSN; behavior mechanism ; traffic flow model  
  下载:         下载 [6 ]  
  vol   1 (1)  :7
 
   12. Research on Traffic Flow Simulation Model with Multi-Agent Based in Vehicular Sensor Network
    作者姓名: Zhao-Sheng Yang, Yao Yu, and Xiang-Lun Mo  
  摘要:   A Vehicle can be represented as an autonomous simulated agent, which is can be efficiently analyzed the vehicular behaviors and the dynamic performance of traffic flow by using Multi-agent system. In this article, a new microscopic vehicular behavior mechanism is proposed based on multi-agent in VSN (vehicular sensor network) circumstance. Different from the traditional vehicle-following principles, the vehicle agent considering the behavioral decision influence by interactive communication of the signalized intersection-vehicle and vehicle-vehicle (ad hoc). The underlying idea is to establish single-lane traffic simulation model on the basis of the influence of the VSN. According to the proposed approach, the decision of the acceleration or deceleration rate by vehicle agent will be altered depend on the front signal phase. In this occasion, the simulations respectively verify the model on microscopic level and macroscopic level in order to analyze the time-space distribution characteristics of the vehicles by interactive information influence. And the result show the proposed mechanism and model can provide better performance than the classic vehicle following model in traditional circumstance. Moreover, the effectiveness of this model is illustrated in the simulation test, which is reproducing the realistic traffic states in VSN.  
  关键词: Multi-agent; VSN; behavior mechanism ; traffic flow model  
  下载:         下载 [6 ]  
  vol   1 (1)  :7
 
   13. Traffic Signal Control Method for Single Intersection Based on Cooperated Vehicle Infrastructure System
    作者姓名: Cunbao Zhang, Bin Ran, Xinping Yan, Zhaohui Mei, and Yang Cheng  
  摘要:   The Cooperative Vehicle Infrastructure System(CVIS)can provide individual vehicles’ real-time status such as position and speed, which could serve as valuable inputs for traffic signal control systems. This paper presents an signal control method for single intersection based on CVIS. The phase-based optimization strategy procedure and models for green signal time in the rolling forecast time horizon were presented, and guidance speed optimization is also described. Simulation experiments indicate that the proposed method is better than induced control method. The average delay and stops decrease are significant at both low and high traffic demands.  
  关键词: intelligent transport system; cooperated vehicle infrastructure system; traffic signal control; single intersection; traffic simulation  
  下载:         下载 [6 ]  
  vol   1 (1)  :13
 
   14. Traffic Signal Control Method for Single Intersection Based on Cooperated Vehicle Infrastructure System
    作者姓名: Cunbao Zhang, Bin Ran, Xinping Yan, Zhaohui Mei, and Yang Cheng  
  摘要:   The Cooperative Vehicle Infrastructure System(CVIS)can provide individual vehicles’ real-time status such as position and speed, which could serve as valuable inputs for traffic signal control systems. This paper presents an signal control method for single intersection based on CVIS. The phase-based optimization strategy procedure and models for green signal time in the rolling forecast time horizon were presented, and guidance speed optimization is also described. Simulation experiments indicate that the proposed method is better than induced control method. The average delay and stops decrease are significant at both low and high traffic demands.  
  关键词: intelligent transport system; cooperated vehicle infrastructure system; traffic signal control; single intersection; traffic simulation  
  下载:         下载 [6 ]  
  vol   1 (1)  :13
 
   15. Traffic Signal Control Method for Single Intersection Based on Cooperated Vehicle Infrastructure System
    作者姓名: Cunbao Zhang, Bin Ran, Xinping Yan, Zhaohui Mei, and Yang Cheng  
  摘要:   The Cooperative Vehicle Infrastructure System(CVIS)can provide individual vehicles’ real-time status such as position and speed, which could serve as valuable inputs for traffic signal control systems. This paper presents an signal control method for single intersection based on CVIS. The phase-based optimization strategy procedure and models for green signal time in the rolling forecast time horizon were presented, and guidance speed optimization is also described. Simulation experiments indicate that the proposed method is better than induced control method. The average delay and stops decrease are significant at both low and high traffic demands.  
  关键词: intelligent transport system; cooperated vehicle infrastructure system; traffic signal control; single intersection; traffic simulation  
  下载:         下载 [6 ]  
  vol   1 (1)  :13
 
   16. Traffic Signal Control Method for Single Intersection Based on Cooperated Vehicle Infrastructure System
    作者姓名: Cunbao Zhang, Bin Ran, Xinping Yan, Zhaohui Mei, and Yang Cheng  
  摘要:   The Cooperative Vehicle Infrastructure System(CVIS)can provide individual vehicles’ real-time status such as position and speed, which could serve as valuable inputs for traffic signal control systems. This paper presents an signal control method for single intersection based on CVIS. The phase-based optimization strategy procedure and models for green signal time in the rolling forecast time horizon were presented, and guidance speed optimization is also described. Simulation experiments indicate that the proposed method is better than induced control method. The average delay and stops decrease are significant at both low and high traffic demands.  
  关键词: intelligent transport system; cooperated vehicle infrastructure system; traffic signal control; single intersection; traffic simulation  
  下载:         下载 [6 ]  
  vol   1 (1)  :13
 
   17. DGPS-Based Vehicle State Estimation in V2I Cooperative System
    作者姓名: Boyuan Xie, Sifa Zheng, Xiaohui Qin, and Xijun Zhou  
  摘要:   A sideslip angle estimation algorithm based on DGPS in V2I cooperative system is proposed. The vehicle kinematic model is built to estimate vehicle yaw angle and sideslip angle; meanwhile a two-order kalman filter is used to fuse information from different sources. The first order kalman filter is available for processing lateral acceleration, longitudinal acceleration and yaw rate collected by IMU(inertia measurement unit), these information is used as the time update of vehicle model. The second order kalman filter is utilized to fuse vehicle location, heading angle, which are collected by DGPS in cooperative system, these information is used as the measurement update of vehicle model. A steady-state cornering test results show that the algorithm is effective, even if the vehicle is in high lateral acceleration. The algorithm suits for vehicle safety control requirements in V2I cooperative system.  
  关键词: Cooperative System; two-order KF; Data Fusing; Sideslip Angle Estimation  
  下载:         下载 [6 ]  
  vol   1 (1)  :23
 
   18. DGPS-Based Vehicle State Estimation in V2I Cooperative System
    作者姓名: Boyuan Xie, Sifa Zheng, Xiaohui Qin, and Xijun Zhou  
  摘要:   A sideslip angle estimation algorithm based on DGPS in V2I cooperative system is proposed. The vehicle kinematic model is built to estimate vehicle yaw angle and sideslip angle; meanwhile a two-order kalman filter is used to fuse information from different sources. The first order kalman filter is available for processing lateral acceleration, longitudinal acceleration and yaw rate collected by IMU(inertia measurement unit), these information is used as the time update of vehicle model. The second order kalman filter is utilized to fuse vehicle location, heading angle, which are collected by DGPS in cooperative system, these information is used as the measurement update of vehicle model. A steady-state cornering test results show that the algorithm is effective, even if the vehicle is in high lateral acceleration. The algorithm suits for vehicle safety control requirements in V2I cooperative system.  
  关键词: Cooperative System; two-order KF; Data Fusing; Sideslip Angle Estimation  
  下载:         下载 [6 ]  
  vol   1 (1)  :23
 
   19. DGPS-Based Vehicle State Estimation in V2I Cooperative System
    作者姓名: Boyuan Xie, Sifa Zheng, Xiaohui Qin, and Xijun Zhou  
  摘要:   A sideslip angle estimation algorithm based on DGPS in V2I cooperative system is proposed. The vehicle kinematic model is built to estimate vehicle yaw angle and sideslip angle; meanwhile a two-order kalman filter is used to fuse information from different sources. The first order kalman filter is available for processing lateral acceleration, longitudinal acceleration and yaw rate collected by IMU(inertia measurement unit), these information is used as the time update of vehicle model. The second order kalman filter is utilized to fuse vehicle location, heading angle, which are collected by DGPS in cooperative system, these information is used as the measurement update of vehicle model. A steady-state cornering test results show that the algorithm is effective, even if the vehicle is in high lateral acceleration. The algorithm suits for vehicle safety control requirements in V2I cooperative system.  
  关键词: Cooperative System; two-order KF; Data Fusing; Sideslip Angle Estimation  
  下载:         下载 [6 ]  
  vol   1 (1)  :23
 
   20. DGPS-Based Vehicle State Estimation in V2I Cooperative System
    作者姓名: Boyuan Xie, Sifa Zheng, Xiaohui Qin, and Xijun Zhou  
  摘要:   A sideslip angle estimation algorithm based on DGPS in V2I cooperative system is proposed. The vehicle kinematic model is built to estimate vehicle yaw angle and sideslip angle; meanwhile a two-order kalman filter is used to fuse information from different sources. The first order kalman filter is available for processing lateral acceleration, longitudinal acceleration and yaw rate collected by IMU(inertia measurement unit), these information is used as the time update of vehicle model. The second order kalman filter is utilized to fuse vehicle location, heading angle, which are collected by DGPS in cooperative system, these information is used as the measurement update of vehicle model. A steady-state cornering test results show that the algorithm is effective, even if the vehicle is in high lateral acceleration. The algorithm suits for vehicle safety control requirements in V2I cooperative system.  
  关键词: Cooperative System; two-order KF; Data Fusing; Sideslip Angle Estimation  
  下载:         下载 [6 ]  
  vol   1 (1)  :23
 
   21. Intelligent Vehicle Platform and Signal Processing Method Applied to Cooperative Vehicle Infrastructure
    作者姓名: Sibo Tian, Sifa Zheng, Boyuan Xie, and Xiaohui Qin  
  摘要:   The technology of intelligent cooperative vehicle infrastructure helps to improve road traffic safety and efficiency. The intelligent vehicle platform is the key equipment for research and validation of the technology of intelligent cooperative vehicle infrastructure. First the general requirements of intelligent vehicle platform as well as the platform vehicle motion and the way of gaining status information based on external sensors are introduced. The signal filtering and calibration of vehicle sensors are focused on. The intelligent vehicle platform established is demonstrated to gain status information of vehicle motion accurately through comparison test and becomes the key device for the intelligent cooperative vehicle infrastructure research.  
  关键词: Cooperative Vehicle Infrastructure; Intelligent Vehicle Platform; Vehicle Sensor; Signal Processing  
  下载:         下载 [6 ]  
  vol   1 (1)  :33
 
   22. Intelligent Vehicle Platform and Signal Processing Method Applied to Cooperative Vehicle Infrastructure
    作者姓名: Sibo Tian, Sifa Zheng, Boyuan Xie, and Xiaohui Qin  
  摘要:   The technology of intelligent cooperative vehicle infrastructure helps to improve road traffic safety and efficiency. The intelligent vehicle platform is the key equipment for research and validation of the technology of intelligent cooperative vehicle infrastructure. First the general requirements of intelligent vehicle platform as well as the platform vehicle motion and the way of gaining status information based on external sensors are introduced. The signal filtering and calibration of vehicle sensors are focused on. The intelligent vehicle platform established is demonstrated to gain status information of vehicle motion accurately through comparison test and becomes the key device for the intelligent cooperative vehicle infrastructure research.  
  关键词: Cooperative Vehicle Infrastructure; Intelligent Vehicle Platform; Vehicle Sensor; Signal Processing  
  下载:         下载 [6 ]  
  vol   1 (1)  :33
 
   23. Intelligent Vehicle Platform and Signal Processing Method Applied to Cooperative Vehicle Infrastructure
    作者姓名: Sibo Tian, Sifa Zheng, Boyuan Xie, and Xiaohui Qin  
  摘要:   The technology of intelligent cooperative vehicle infrastructure helps to improve road traffic safety and efficiency. The intelligent vehicle platform is the key equipment for research and validation of the technology of intelligent cooperative vehicle infrastructure. First the general requirements of intelligent vehicle platform as well as the platform vehicle motion and the way of gaining status information based on external sensors are introduced. The signal filtering and calibration of vehicle sensors are focused on. The intelligent vehicle platform established is demonstrated to gain status information of vehicle motion accurately through comparison test and becomes the key device for the intelligent cooperative vehicle infrastructure research.  
  关键词: Cooperative Vehicle Infrastructure; Intelligent Vehicle Platform; Vehicle Sensor; Signal Processing  
  下载:         下载 [6 ]  
  vol   1 (1)  :33
 
   24. Intelligent Vehicle Platform and Signal Processing Method Applied to Cooperative Vehicle Infrastructure
    作者姓名: Sibo Tian, Sifa Zheng, Boyuan Xie, and Xiaohui Qin  
  摘要:   The technology of intelligent cooperative vehicle infrastructure helps to improve road traffic safety and efficiency. The intelligent vehicle platform is the key equipment for research and validation of the technology of intelligent cooperative vehicle infrastructure. First the general requirements of intelligent vehicle platform as well as the platform vehicle motion and the way of gaining status information based on external sensors are introduced. The signal filtering and calibration of vehicle sensors are focused on. The intelligent vehicle platform established is demonstrated to gain status information of vehicle motion accurately through comparison test and becomes the key device for the intelligent cooperative vehicle infrastructure research.  
  关键词: Cooperative Vehicle Infrastructure; Intelligent Vehicle Platform; Vehicle Sensor; Signal Processing  
  下载:         下载 [6 ]  
  vol   1 (1)  :33
 
   25. A High-Level Architect SimIVC for Simulating Traffic Network
    作者姓名: Xiaowei Xu, Tao Jiang, Pengfei Li, Tony Qiu, Yu Hu  
  摘要:   Recently, many efforts have been devoted to advancing the Connected Vehicle technology. It is foreseeable that a network of vehicles will come to our everyday life in near future. Nevertheless, it is not yet practical to conduct large-scale experiments in the field for research of Inter-Vehicle Communication (IVC) protocols and their effects on traffic, and IVC simulation is in high demand for evaluating the performance and applicability of existing network protocols and their impacts on traffic. Regarding the importance of simulating precision of both vehicular driving behavior and networking protocols, it is desired to develop a state-of-the-art simulator capable of both fine-grained traffic microscopic simulation and network simulation. Inspired by these facts, we developed a High-Level Architect (HLA) SimIVC (Simulator for Inter-Vehicle Communication), composed of a traffic simulator, PTV VISSIM, and a network simulator, OMNeT++. A study was conducted to show the effectiveness of SimIVC. In the study, two network protocols (DSRC and Wi-Fi) were evaluated in a well-calibrated road simulation network developed with the HLA SimIVC.  
  关键词: Inter-Vehicle Communication, traffic simulation, High-Level-Architect  
  下载:         下载 [6 ]  
  vol   1 (1)  :40
 
   26. A High-Level Architect SimIVC for Simulating Traffic Network
    作者姓名: Xiaowei Xu, Tao Jiang, Pengfei Li, Tony Qiu, Yu Hu  
  摘要:   Recently, many efforts have been devoted to advancing the Connected Vehicle technology. It is foreseeable that a network of vehicles will come to our everyday life in near future. Nevertheless, it is not yet practical to conduct large-scale experiments in the field for research of Inter-Vehicle Communication (IVC) protocols and their effects on traffic, and IVC simulation is in high demand for evaluating the performance and applicability of existing network protocols and their impacts on traffic. Regarding the importance of simulating precision of both vehicular driving behavior and networking protocols, it is desired to develop a state-of-the-art simulator capable of both fine-grained traffic microscopic simulation and network simulation. Inspired by these facts, we developed a High-Level Architect (HLA) SimIVC (Simulator for Inter-Vehicle Communication), composed of a traffic simulator, PTV VISSIM, and a network simulator, OMNeT++. A study was conducted to show the effectiveness of SimIVC. In the study, two network protocols (DSRC and Wi-Fi) were evaluated in a well-calibrated road simulation network developed with the HLA SimIVC.  
  关键词: Inter-Vehicle Communication, traffic simulation, High-Level-Architect  
  下载:         下载 [6 ]  
  vol   1 (1)  :40
 
   27. A High-Level Architect SimIVC for Simulating Traffic Network
    作者姓名: Xiaowei Xu, Tao Jiang, Pengfei Li, Tony Qiu, Yu Hu  
  摘要:   Recently, many efforts have been devoted to advancing the Connected Vehicle technology. It is foreseeable that a network of vehicles will come to our everyday life in near future. Nevertheless, it is not yet practical to conduct large-scale experiments in the field for research of Inter-Vehicle Communication (IVC) protocols and their effects on traffic, and IVC simulation is in high demand for evaluating the performance and applicability of existing network protocols and their impacts on traffic. Regarding the importance of simulating precision of both vehicular driving behavior and networking protocols, it is desired to develop a state-of-the-art simulator capable of both fine-grained traffic microscopic simulation and network simulation. Inspired by these facts, we developed a High-Level Architect (HLA) SimIVC (Simulator for Inter-Vehicle Communication), composed of a traffic simulator, PTV VISSIM, and a network simulator, OMNeT++. A study was conducted to show the effectiveness of SimIVC. In the study, two network protocols (DSRC and Wi-Fi) were evaluated in a well-calibrated road simulation network developed with the HLA SimIVC.  
  关键词: Inter-Vehicle Communication, traffic simulation, High-Level-Architect  
  下载:         下载 [6 ]  
  vol   1 (1)  :40
 
   28. A High-Level Architect SimIVC for Simulating Traffic Network
    作者姓名: Xiaowei Xu, Tao Jiang, Pengfei Li, Tony Qiu, Yu Hu  
  摘要:   Recently, many efforts have been devoted to advancing the Connected Vehicle technology. It is foreseeable that a network of vehicles will come to our everyday life in near future. Nevertheless, it is not yet practical to conduct large-scale experiments in the field for research of Inter-Vehicle Communication (IVC) protocols and their effects on traffic, and IVC simulation is in high demand for evaluating the performance and applicability of existing network protocols and their impacts on traffic. Regarding the importance of simulating precision of both vehicular driving behavior and networking protocols, it is desired to develop a state-of-the-art simulator capable of both fine-grained traffic microscopic simulation and network simulation. Inspired by these facts, we developed a High-Level Architect (HLA) SimIVC (Simulator for Inter-Vehicle Communication), composed of a traffic simulator, PTV VISSIM, and a network simulator, OMNeT++. A study was conducted to show the effectiveness of SimIVC. In the study, two network protocols (DSRC and Wi-Fi) were evaluated in a well-calibrated road simulation network developed with the HLA SimIVC.  
  关键词: Inter-Vehicle Communication, traffic simulation, High-Level-Architect  
  下载:         下载 [6 ]  
  vol   1 (1)  :40
 
   29. An Integrated Testing Scheme and Its Optimization for Cooperative Vehicle Infrastructure System
    作者姓名: Min Liu,Tianji Feng, Xiaohua Cao, Duanfeng Chu  
  摘要:   With the rapid development of intelligent transportation systems, conventional testing methods are hard to meet the testing requirements of the complex cooperative vehicle infrastructure system(CVIS). Based on analyzing various functions of the vehicle infrastructure interactive traffic safety system, the vehicle-vehicle interactive collaborative control system and the traffic coordination control system under the cooperative vehicle infrastructure environment, it is synthetically considered the implementing scenes and venues of vehicle infrastructure system. Combining with advanced wireless communication, data exchange technology and sensor detection technology, it is presented an integrated testing scheme on the basis of real testing conditions of CVIS under two scenarios, i.e. a segment and an intersection. Through the on road experiment, the integration and simplification of the scenes and venues have been achieved and the redundancy of the test system has been reduced. The experiment results indicate that the testing scheme is of general and feasible.  
  关键词: Intelligent Transportation Systems; cooperative vehicle infrastructure system; Integrated test  
  下载:         下载 [6 ]  
  vol   1 (1)  :49
 
   30. An Integrated Testing Scheme and Its Optimization for Cooperative Vehicle Infrastructure System
    作者姓名: Min Liu,Tianji Feng, Xiaohua Cao, Duanfeng Chu  
  摘要:   With the rapid development of intelligent transportation systems, conventional testing methods are hard to meet the testing requirements of the complex cooperative vehicle infrastructure system(CVIS). Based on analyzing various functions of the vehicle infrastructure interactive traffic safety system, the vehicle-vehicle interactive collaborative control system and the traffic coordination control system under the cooperative vehicle infrastructure environment, it is synthetically considered the implementing scenes and venues of vehicle infrastructure system. Combining with advanced wireless communication, data exchange technology and sensor detection technology, it is presented an integrated testing scheme on the basis of real testing conditions of CVIS under two scenarios, i.e. a segment and an intersection. Through the on road experiment, the integration and simplification of the scenes and venues have been achieved and the redundancy of the test system has been reduced. The experiment results indicate that the testing scheme is of general and feasible.  
  关键词: Intelligent Transportation Systems; cooperative vehicle infrastructure system; Integrated test  
  下载:         下载 [6 ]  
  vol   1 (1)  :49
 
   31. An Integrated Testing Scheme and Its Optimization for Cooperative Vehicle Infrastructure System
    作者姓名: Min Liu,Tianji Feng, Xiaohua Cao, Duanfeng Chu  
  摘要:   With the rapid development of intelligent transportation systems, conventional testing methods are hard to meet the testing requirements of the complex cooperative vehicle infrastructure system(CVIS). Based on analyzing various functions of the vehicle infrastructure interactive traffic safety system, the vehicle-vehicle interactive collaborative control system and the traffic coordination control system under the cooperative vehicle infrastructure environment, it is synthetically considered the implementing scenes and venues of vehicle infrastructure system. Combining with advanced wireless communication, data exchange technology and sensor detection technology, it is presented an integrated testing scheme on the basis of real testing conditions of CVIS under two scenarios, i.e. a segment and an intersection. Through the on road experiment, the integration and simplification of the scenes and venues have been achieved and the redundancy of the test system has been reduced. The experiment results indicate that the testing scheme is of general and feasible.  
  关键词: Intelligent Transportation Systems; cooperative vehicle infrastructure system; Integrated test  
  下载:         下载 [6 ]  
  vol   1 (1)  :49
 
   32. An Integrated Testing Scheme and Its Optimization for Cooperative Vehicle Infrastructure System
    作者姓名: Min Liu,Tianji Feng, Xiaohua Cao, Duanfeng Chu  
  摘要:   With the rapid development of intelligent transportation systems, conventional testing methods are hard to meet the testing requirements of the complex cooperative vehicle infrastructure system(CVIS). Based on analyzing various functions of the vehicle infrastructure interactive traffic safety system, the vehicle-vehicle interactive collaborative control system and the traffic coordination control system under the cooperative vehicle infrastructure environment, it is synthetically considered the implementing scenes and venues of vehicle infrastructure system. Combining with advanced wireless communication, data exchange technology and sensor detection technology, it is presented an integrated testing scheme on the basis of real testing conditions of CVIS under two scenarios, i.e. a segment and an intersection. Through the on road experiment, the integration and simplification of the scenes and venues have been achieved and the redundancy of the test system has been reduced. The experiment results indicate that the testing scheme is of general and feasible.  
  关键词: Intelligent Transportation Systems; cooperative vehicle infrastructure system; Integrated test  
  下载:         下载 [6 ]  
  vol   1 (1)  :49
 
   33. Traffic Congestion Detection and Notification in the Urban Expressway System Using VANETs
    作者姓名: Quan Yuan, Zhihan Liu, Fangchun Yang  
  摘要:   The cooperative vehicle-infrastructure technologies have made it possible for vehicles collecting and exchanging real-time traffic information, which achieves the purpose of traffic guidance. However, because of the complex road and traffic conditions, the traffic congestion detection using Vehicular Ad-hoc NETworks (VANETs) is inaccurate on the urban expressway. What’s more, the congestion information dissemination lacks the necessary control mechanism. The study proposes an urban expressway congestion detection and notification method using VANETs. The method adopts the simplified Doppler frequency shift method to estimate and distinguish the degree of the major and auxiliary road congestion. And human cognitive abilities are used to cooperatively amend the estimation and describe the overall situation of the congestion. The method also develops a spatial-temporal effectiveness model based on the field and potential energy theory to control the dissemination range and survival time of the congestion information, meanwhile, it alleviates the vehicular network congestion. The proposed method ensures the accuracy and effectiveness of the congestion information, and provides references for driving decision making and path planning.  
  关键词: VANET, congestion message dissemination, information effectiveness  
  下载:         下载 [6 ]  
  vol   1 (1)  :58
 
   34. Traffic Congestion Detection and Notification in the Urban Expressway System Using VANETs
    作者姓名: Quan Yuan, Zhihan Liu, Fangchun Yang  
  摘要:   The cooperative vehicle-infrastructure technologies have made it possible for vehicles collecting and exchanging real-time traffic information, which achieves the purpose of traffic guidance. However, because of the complex road and traffic conditions, the traffic congestion detection using Vehicular Ad-hoc NETworks (VANETs) is inaccurate on the urban expressway. What’s more, the congestion information dissemination lacks the necessary control mechanism. The study proposes an urban expressway congestion detection and notification method using VANETs. The method adopts the simplified Doppler frequency shift method to estimate and distinguish the degree of the major and auxiliary road congestion. And human cognitive abilities are used to cooperatively amend the estimation and describe the overall situation of the congestion. The method also develops a spatial-temporal effectiveness model based on the field and potential energy theory to control the dissemination range and survival time of the congestion information, meanwhile, it alleviates the vehicular network congestion. The proposed method ensures the accuracy and effectiveness of the congestion information, and provides references for driving decision making and path planning.  
  关键词: VANET, congestion message dissemination, information effectiveness  
  下载:         下载 [6 ]  
  vol   1 (1)  :58
 
   35. Traffic Congestion Detection and Notification in the Urban Expressway System Using VANETs
    作者姓名: Quan Yuan, Zhihan Liu, Fangchun Yang  
  摘要:   The cooperative vehicle-infrastructure technologies have made it possible for vehicles collecting and exchanging real-time traffic information, which achieves the purpose of traffic guidance. However, because of the complex road and traffic conditions, the traffic congestion detection using Vehicular Ad-hoc NETworks (VANETs) is inaccurate on the urban expressway. What’s more, the congestion information dissemination lacks the necessary control mechanism. The study proposes an urban expressway congestion detection and notification method using VANETs. The method adopts the simplified Doppler frequency shift method to estimate and distinguish the degree of the major and auxiliary road congestion. And human cognitive abilities are used to cooperatively amend the estimation and describe the overall situation of the congestion. The method also develops a spatial-temporal effectiveness model based on the field and potential energy theory to control the dissemination range and survival time of the congestion information, meanwhile, it alleviates the vehicular network congestion. The proposed method ensures the accuracy and effectiveness of the congestion information, and provides references for driving decision making and path planning.  
  关键词: VANET, congestion message dissemination, information effectiveness  
  下载:         下载 [6 ]  
  vol   1 (1)  :58
 
   36. Traffic Congestion Detection and Notification in the Urban Expressway System Using VANETs
    作者姓名: Quan Yuan, Zhihan Liu, Fangchun Yang  
  摘要:   The cooperative vehicle-infrastructure technologies have made it possible for vehicles collecting and exchanging real-time traffic information, which achieves the purpose of traffic guidance. However, because of the complex road and traffic conditions, the traffic congestion detection using Vehicular Ad-hoc NETworks (VANETs) is inaccurate on the urban expressway. What’s more, the congestion information dissemination lacks the necessary control mechanism. The study proposes an urban expressway congestion detection and notification method using VANETs. The method adopts the simplified Doppler frequency shift method to estimate and distinguish the degree of the major and auxiliary road congestion. And human cognitive abilities are used to cooperatively amend the estimation and describe the overall situation of the congestion. The method also develops a spatial-temporal effectiveness model based on the field and potential energy theory to control the dissemination range and survival time of the congestion information, meanwhile, it alleviates the vehicular network congestion. The proposed method ensures the accuracy and effectiveness of the congestion information, and provides references for driving decision making and path planning.  
  关键词: VANET, congestion message dissemination, information effectiveness  
  下载:         下载 [6 ]  
  vol   1 (1)  :58
 
   37. Vehicle Cooperative Control Framework in Transportation Cyber-Physical Systems
    作者姓名: Yongfu Li, Hao Zhu, Penghua Li, Min Cen, Yinguo Li, and Dihua Sun  
  摘要:   Transportation cyber physical systems (T-CPS) refer to that the concept of cyber physical systems (CPS) is introduced into transportation systems, which can make transportation systems achieve full coordination and optimization via the increased interaction and feedback between the transportation cyber system and transportation physical system. Considering the characteristics of widespread interconnection, intercommunication, interoperability in T-CPS, the present paper proposed a vehicle cooperative control framework based on the coordination between individual vehicles as well as between vehicles and the roadside infrastructure. Consequently, the vehicles' efficiency can be improved under the proposed vehicle cooperative framework.  
  关键词: Transportation Cyber Physical Systems(T-CPS), Cyber Physical Systems(CPS), Vehicle Cooperative Control  
  下载:         下载 [6 ]  
  vol   1 (1)  :64
 
   38. Vehicle Cooperative Control Framework in Transportation Cyber-Physical Systems
    作者姓名: Yongfu Li, Hao Zhu, Penghua Li, Min Cen, Yinguo Li, and Dihua Sun  
  摘要:   Transportation cyber physical systems (T-CPS) refer to that the concept of cyber physical systems (CPS) is introduced into transportation systems, which can make transportation systems achieve full coordination and optimization via the increased interaction and feedback between the transportation cyber system and transportation physical system. Considering the characteristics of widespread interconnection, intercommunication, interoperability in T-CPS, the present paper proposed a vehicle cooperative control framework based on the coordination between individual vehicles as well as between vehicles and the roadside infrastructure. Consequently, the vehicles' efficiency can be improved under the proposed vehicle cooperative framework.  
  关键词: Transportation Cyber Physical Systems(T-CPS), Cyber Physical Systems(CPS), Vehicle Cooperative Control  
  下载:         下载 [6 ]  
  vol   1 (1)  :64
 
   39. Vehicle Cooperative Control Framework in Transportation Cyber-Physical Systems
    作者姓名: Yongfu Li, Hao Zhu, Penghua Li, Min Cen, Yinguo Li, and Dihua Sun  
  摘要:   Transportation cyber physical systems (T-CPS) refer to that the concept of cyber physical systems (CPS) is introduced into transportation systems, which can make transportation systems achieve full coordination and optimization via the increased interaction and feedback between the transportation cyber system and transportation physical system. Considering the characteristics of widespread interconnection, intercommunication, interoperability in T-CPS, the present paper proposed a vehicle cooperative control framework based on the coordination between individual vehicles as well as between vehicles and the roadside infrastructure. Consequently, the vehicles' efficiency can be improved under the proposed vehicle cooperative framework.  
  关键词: Transportation Cyber Physical Systems(T-CPS), Cyber Physical Systems(CPS), Vehicle Cooperative Control  
  下载:         下载 [6 ]  
  vol   1 (1)  :64
 
   40. Vehicle Cooperative Control Framework in Transportation Cyber-Physical Systems
    作者姓名: Yongfu Li, Hao Zhu, Penghua Li, Min Cen, Yinguo Li, and Dihua Sun  
  摘要:   Transportation cyber physical systems (T-CPS) refer to that the concept of cyber physical systems (CPS) is introduced into transportation systems, which can make transportation systems achieve full coordination and optimization via the increased interaction and feedback between the transportation cyber system and transportation physical system. Considering the characteristics of widespread interconnection, intercommunication, interoperability in T-CPS, the present paper proposed a vehicle cooperative control framework based on the coordination between individual vehicles as well as between vehicles and the roadside infrastructure. Consequently, the vehicles' efficiency can be improved under the proposed vehicle cooperative framework.  
  关键词: Transportation Cyber Physical Systems(T-CPS), Cyber Physical Systems(CPS), Vehicle Cooperative Control  
  下载:         下载 [6 ]  
  vol   1 (1)  :64
 
   41. Summary of Magnetic Induction Technology
    作者姓名: Zhiyong Lv, Muming Li, and Chenghao Hu  
  摘要:   Firstly, from the view of the point of road marking, this article has analyzed the visual navigation constraints which is depended on the road geometry and the response capability of the driver, especially the driver's psychological has the greatest impact on the induced perception of road, in the face of the capability of the rapid response to the system of road- induced. Magnetic induction technology is cooperative vehicles infrastructure (CVI), to tracking analyze the lane keeping , cornering control and the development process of lane changing control, especially in the Magnetic Markers induction, it analyzed the application of the United States , Japan , China and other countries. Finally, it elaborates the new technology of the magnetization of the magnetic asphalt pavement, brings forth a magnetic induction technology of the triaxial different track isomorphic, analyzes the means of magnetic sensor technology, and discusses the comprehensive advantages and road development impact of the magnetic pavement. Finally, it describes the trend of magnetic road development.  
  关键词: Magnetic induction ,cooperative vehicles infrastructure  
  下载:         下载 [6 ]  
  vol   1 (1)  :70
 
   42. Summary of Magnetic Induction Technology
    作者姓名: Zhiyong Lv, Muming Li, and Chenghao Hu  
  摘要:   Firstly, from the view of the point of road marking, this article has analyzed the visual navigation constraints which is depended on the road geometry and the response capability of the driver, especially the driver's psychological has the greatest impact on the induced perception of road, in the face of the capability of the rapid response to the system of road- induced. Magnetic induction technology is cooperative vehicles infrastructure (CVI), to tracking analyze the lane keeping , cornering control and the development process of lane changing control, especially in the Magnetic Markers induction, it analyzed the application of the United States , Japan , China and other countries. Finally, it elaborates the new technology of the magnetization of the magnetic asphalt pavement, brings forth a magnetic induction technology of the triaxial different track isomorphic, analyzes the means of magnetic sensor technology, and discusses the comprehensive advantages and road development impact of the magnetic pavement. Finally, it describes the trend of magnetic road development.  
  关键词: Magnetic induction ,cooperative vehicles infrastructure  
  下载:         下载 [6 ]  
  vol   1 (1)  :70
 
   43. Summary of Magnetic Induction Technology
    作者姓名: Zhiyong Lv, Muming Li, and Chenghao Hu  
  摘要:   Firstly, from the view of the point of road marking, this article has analyzed the visual navigation constraints which is depended on the road geometry and the response capability of the driver, especially the driver's psychological has the greatest impact on the induced perception of road, in the face of the capability of the rapid response to the system of road- induced. Magnetic induction technology is cooperative vehicles infrastructure (CVI), to tracking analyze the lane keeping , cornering control and the development process of lane changing control, especially in the Magnetic Markers induction, it analyzed the application of the United States , Japan , China and other countries. Finally, it elaborates the new technology of the magnetization of the magnetic asphalt pavement, brings forth a magnetic induction technology of the triaxial different track isomorphic, analyzes the means of magnetic sensor technology, and discusses the comprehensive advantages and road development impact of the magnetic pavement. Finally, it describes the trend of magnetic road development.  
  关键词: Magnetic induction ,cooperative vehicles infrastructure  
  下载:         下载 [6 ]  
  vol   1 (1)  :70
 
   44. Summary of Magnetic Induction Technology
    作者姓名: Zhiyong Lv, Muming Li, and Chenghao Hu  
  摘要:   Firstly, from the view of the point of road marking, this article has analyzed the visual navigation constraints which is depended on the road geometry and the response capability of the driver, especially the driver's psychological has the greatest impact on the induced perception of road, in the face of the capability of the rapid response to the system of road- induced. Magnetic induction technology is cooperative vehicles infrastructure (CVI), to tracking analyze the lane keeping , cornering control and the development process of lane changing control, especially in the Magnetic Markers induction, it analyzed the application of the United States , Japan , China and other countries. Finally, it elaborates the new technology of the magnetization of the magnetic asphalt pavement, brings forth a magnetic induction technology of the triaxial different track isomorphic, analyzes the means of magnetic sensor technology, and discusses the comprehensive advantages and road development impact of the magnetic pavement. Finally, it describes the trend of magnetic road development.  
  关键词: Magnetic induction ,cooperative vehicles infrastructure  
  下载:         下载 [6 ]  
  vol   1 (1)  :70
 
   45. A Formulation Method of Control Protocol for Intersection Signal Based on Wireless Communication Technologies
    作者姓名: Zhiyong Lu, Qinlan Zhang, and Xiang Liu  
  摘要:   In order to identify traffic signal in bad weather, a method of intersection signal phase formulation and transmission is developed. The total data packet of intersection information and phase information is divided into three parts (the header files, the intersection information and the signal control program parameters) on the basis of the intersection signal control protocol which are described separately. Taking a common crossroad as an example, the encoding rules on signal control program are elaborated by which the intersection is described and message protocol is set up. Receiving terminal in the vehicle receives the control timing of signal lamp in the intersection through wireless transmission technology. Drivers can get the control timing of the signal lamp in the intersection accurately and previously and distinguish their driving behavior combined with the location of themselves by this method, which ensures safe driving.  
  关键词: intersection signal, phase information, control protocol  
  下载:         下载 [6 ]  
  vol   1 (1)  :78
 
   46. A Formulation Method of Control Protocol for Intersection Signal Based on Wireless Communication Technologies
    作者姓名: Zhiyong Lu, Qinlan Zhang, and Xiang Liu  
  摘要:   In order to identify traffic signal in bad weather, a method of intersection signal phase formulation and transmission is developed. The total data packet of intersection information and phase information is divided into three parts (the header files, the intersection information and the signal control program parameters) on the basis of the intersection signal control protocol which are described separately. Taking a common crossroad as an example, the encoding rules on signal control program are elaborated by which the intersection is described and message protocol is set up. Receiving terminal in the vehicle receives the control timing of signal lamp in the intersection through wireless transmission technology. Drivers can get the control timing of the signal lamp in the intersection accurately and previously and distinguish their driving behavior combined with the location of themselves by this method, which ensures safe driving.  
  关键词: intersection signal, phase information, control protocol  
  下载:         下载 [6 ]  
  vol   1 (1)  :78
 
   47. A Formulation Method of Control Protocol for Intersection Signal Based on Wireless Communication Technologies
    作者姓名: Zhiyong Lu, Qinlan Zhang, and Xiang Liu  
  摘要:   In order to identify traffic signal in bad weather, a method of intersection signal phase formulation and transmission is developed. The total data packet of intersection information and phase information is divided into three parts (the header files, the intersection information and the signal control program parameters) on the basis of the intersection signal control protocol which are described separately. Taking a common crossroad as an example, the encoding rules on signal control program are elaborated by which the intersection is described and message protocol is set up. Receiving terminal in the vehicle receives the control timing of signal lamp in the intersection through wireless transmission technology. Drivers can get the control timing of the signal lamp in the intersection accurately and previously and distinguish their driving behavior combined with the location of themselves by this method, which ensures safe driving.  
  关键词: intersection signal, phase information, control protocol  
  下载:         下载 [6 ]  
  vol   1 (1)  :78
 
   48. A Formulation Method of Control Protocol for Intersection Signal Based on Wireless Communication Technologies
    作者姓名: Zhiyong Lu, Qinlan Zhang, and Xiang Liu  
  摘要:   In order to identify traffic signal in bad weather, a method of intersection signal phase formulation and transmission is developed. The total data packet of intersection information and phase information is divided into three parts (the header files, the intersection information and the signal control program parameters) on the basis of the intersection signal control protocol which are described separately. Taking a common crossroad as an example, the encoding rules on signal control program are elaborated by which the intersection is described and message protocol is set up. Receiving terminal in the vehicle receives the control timing of signal lamp in the intersection through wireless transmission technology. Drivers can get the control timing of the signal lamp in the intersection accurately and previously and distinguish their driving behavior combined with the location of themselves by this method, which ensures safe driving.  
  关键词: intersection signal, phase information, control protocol  
  下载:         下载 [6 ]  
  vol   1 (1)  :78
 
   49. Road-Side Units Based Data Forwarding Framework in Vehicular Ad Hoc Networks
    作者姓名: Hui Duan and Ye Li  
  摘要:   Vehicular ad hoc networks (VANETs) is an emerging new communication technology which has great potential to enhance safety and comfort of drivers. Security and privacy issues are crucial limits to the adaption of VANETs. In this article, a road-side units(RSUs) based privacy preserving message forwarding framework in VANETs is presented, which utilizes the deployment of RSUs to deliver messages to their destinations while preserving communicating parties’ privacy. It takes advantage of high performance capability of RSUs to store and forward messages to their destinations, where these RSUs utilize re-encryption technique to form a mix network to provide adequate privacy for senders and receivers. And the security analysis results show that the proposed framework can achieve efficient data delivery for many delay tolerant application in VANETs.  
  关键词: VANETs, data forwarding, privacy preservation  
  下载:         下载 [6 ]  
  vol   1 (1)  :84
 
   50. Road-Side Units Based Data Forwarding Framework in Vehicular Ad Hoc Networks
    作者姓名: Hui Duan and Ye Li  
  摘要:   Vehicular ad hoc networks (VANETs) is an emerging new communication technology which has great potential to enhance safety and comfort of drivers. Security and privacy issues are crucial limits to the adaption of VANETs. In this article, a road-side units(RSUs) based privacy preserving message forwarding framework in VANETs is presented, which utilizes the deployment of RSUs to deliver messages to their destinations while preserving communicating parties’ privacy. It takes advantage of high performance capability of RSUs to store and forward messages to their destinations, where these RSUs utilize re-encryption technique to form a mix network to provide adequate privacy for senders and receivers. And the security analysis results show that the proposed framework can achieve efficient data delivery for many delay tolerant application in VANETs.  
  关键词: VANETs, data forwarding, privacy preservation  
  下载:         下载 [6 ]  
  vol   1 (1)  :84
 
   51. Road-Side Units Based Data Forwarding Framework in Vehicular Ad Hoc Networks
    作者姓名: Hui Duan and Ye Li  
  摘要:   Vehicular ad hoc networks (VANETs) is an emerging new communication technology which has great potential to enhance safety and comfort of drivers. Security and privacy issues are crucial limits to the adaption of VANETs. In this article, a road-side units(RSUs) based privacy preserving message forwarding framework in VANETs is presented, which utilizes the deployment of RSUs to deliver messages to their destinations while preserving communicating parties’ privacy. It takes advantage of high performance capability of RSUs to store and forward messages to their destinations, where these RSUs utilize re-encryption technique to form a mix network to provide adequate privacy for senders and receivers. And the security analysis results show that the proposed framework can achieve efficient data delivery for many delay tolerant application in VANETs.  
  关键词: VANETs, data forwarding, privacy preservation  
  下载:         下载 [6 ]  
  vol   1 (1)  :84
 
   52. Road-Side Units Based Data Forwarding Framework in Vehicular Ad Hoc Networks
    作者姓名: Hui Duan and Ye Li  
  摘要:   Vehicular ad hoc networks (VANETs) is an emerging new communication technology which has great potential to enhance safety and comfort of drivers. Security and privacy issues are crucial limits to the adaption of VANETs. In this article, a road-side units(RSUs) based privacy preserving message forwarding framework in VANETs is presented, which utilizes the deployment of RSUs to deliver messages to their destinations while preserving communicating parties’ privacy. It takes advantage of high performance capability of RSUs to store and forward messages to their destinations, where these RSUs utilize re-encryption technique to form a mix network to provide adequate privacy for senders and receivers. And the security analysis results show that the proposed framework can achieve efficient data delivery for many delay tolerant application in VANETs.  
  关键词: VANETs, data forwarding, privacy preservation  
  下载:         下载 [6 ]  
  vol   1 (1)  :84
 
   53. Assessment System Construction for Cooperative Vehicle Infrastructure System Based on Fuzzy Analytic Hierarchy Process
    作者姓名: Duanfeng Chu, Wei Huang, and Chaozhong Wu  
  摘要:   Cooperative Vehicle Infrastructure System (CVIS) is a complex system for interactions among human, vehicles and roads. However, there is no effective assessment methodology for intelligent tests and assessment of the system. In this paper, it is firstly selected the hierarchical cooperative vehicle assessment criteria based on fuzzy Analytic Hierarchy Process (AHP). Secondly, it is assigned weights of various assessment criteria using Analytic Hierarchy Process, followed by the consistency check for the weight results of these criteria. Lastly, the Cooperative Vehicle Infrastructure System is evaluated based on Fuzzy Synthesis for building the assessment system of CVIS. It establishes a theoretical foundation for CVIS testing and verification.  
  关键词: Cooperative Vehicle-Infrastructure Integration; Fuzzy Synthesis; Analytic Hierarchy Process; Assessment System  
  下载:         下载 [6 ]  
  vol   1 (1)  :91
 
   54. Assessment System Construction for Cooperative Vehicle Infrastructure System Based on Fuzzy Analytic Hierarchy Process
    作者姓名: Duanfeng Chu, Wei Huang, and Chaozhong Wu  
  摘要:   Cooperative Vehicle Infrastructure System (CVIS) is a complex system for interactions among human, vehicles and roads. However, there is no effective assessment methodology for intelligent tests and assessment of the system. In this paper, it is firstly selected the hierarchical cooperative vehicle assessment criteria based on fuzzy Analytic Hierarchy Process (AHP). Secondly, it is assigned weights of various assessment criteria using Analytic Hierarchy Process, followed by the consistency check for the weight results of these criteria. Lastly, the Cooperative Vehicle Infrastructure System is evaluated based on Fuzzy Synthesis for building the assessment system of CVIS. It establishes a theoretical foundation for CVIS testing and verification.  
  关键词: Cooperative Vehicle-Infrastructure Integration; Fuzzy Synthesis; Analytic Hierarchy Process; Assessment System  
  下载:         下载 [6 ]  
  vol   1 (1)  :91
 
   55. Assessment System Construction for Cooperative Vehicle Infrastructure System Based on Fuzzy Analytic Hierarchy Process
    作者姓名: Duanfeng Chu, Wei Huang, and Chaozhong Wu  
  摘要:   Cooperative Vehicle Infrastructure System (CVIS) is a complex system for interactions among human, vehicles and roads. However, there is no effective assessment methodology for intelligent tests and assessment of the system. In this paper, it is firstly selected the hierarchical cooperative vehicle assessment criteria based on fuzzy Analytic Hierarchy Process (AHP). Secondly, it is assigned weights of various assessment criteria using Analytic Hierarchy Process, followed by the consistency check for the weight results of these criteria. Lastly, the Cooperative Vehicle Infrastructure System is evaluated based on Fuzzy Synthesis for building the assessment system of CVIS. It establishes a theoretical foundation for CVIS testing and verification.  
  关键词: Cooperative Vehicle-Infrastructure Integration; Fuzzy Synthesis; Analytic Hierarchy Process; Assessment System  
  下载:         下载 [6 ]  
  vol   1 (1)  :91
 
   56. Assessment System Construction for Cooperative Vehicle Infrastructure System Based on Fuzzy Analytic Hierarchy Process
    作者姓名: Duanfeng Chu, Wei Huang, and Chaozhong Wu  
  摘要:   Cooperative Vehicle Infrastructure System (CVIS) is a complex system for interactions among human, vehicles and roads. However, there is no effective assessment methodology for intelligent tests and assessment of the system. In this paper, it is firstly selected the hierarchical cooperative vehicle assessment criteria based on fuzzy Analytic Hierarchy Process (AHP). Secondly, it is assigned weights of various assessment criteria using Analytic Hierarchy Process, followed by the consistency check for the weight results of these criteria. Lastly, the Cooperative Vehicle Infrastructure System is evaluated based on Fuzzy Synthesis for building the assessment system of CVIS. It establishes a theoretical foundation for CVIS testing and verification.  
  关键词: Cooperative Vehicle-Infrastructure Integration; Fuzzy Synthesis; Analytic Hierarchy Process; Assessment System  
  下载:         下载 [6 ]  
  vol   1 (1)  :91
 
   57. Design of Traffic Scenes in Intersections for Verification of Cooperative Vehicle Infrastructure System
    作者姓名: Duanfeng Chu, Jiansen Yang, Shaodan Chai, and Chaozhong Wu  
  摘要:   Cooperative Vehicle Infrastructure System (CVIS) which applies advanced communication technology, automatic control technology and computer technology to realize the interactions among human, vehicles and roads is a complex system to improve transportation safety and efficiency. The system validity and reliability is the key to make this system practical. However, presently there does not exit a comprehensive and effective test standard and environment to verify the system. In this paper, starting with the typical application demands of CVIS in intersections, it is built a framework of traffic scenes for the verification of CVIS under the intersection environment, through the extraction of static traffic elements such as the natural environment, intersection channelization, etc., as well as dynamic traffic elements such as various conflicts of pedestrian - vehicle, vehicle-vehicle, vehicle-traffic lights, etc. Moreover, it is designed some typical application scenes in intersections to instantiate the framework. Results of this paper can provide some guidance for the integrated verification of CVIS, and establish a practical foundation for the test and verification of typical CVIS applications under intersection environments as well.  
  关键词: cooperative vehicle infrastructure system, traffic scene, intersection, complex system  
  下载:         下载 [6 ]  
  vol   1 (1)  :101
 
   58. Design of Traffic Scenes in Intersections for Verification of Cooperative Vehicle Infrastructure System
    作者姓名: Duanfeng Chu, Jiansen Yang, Shaodan Chai, and Chaozhong Wu  
  摘要:   Cooperative Vehicle Infrastructure System (CVIS) which applies advanced communication technology, automatic control technology and computer technology to realize the interactions among human, vehicles and roads is a complex system to improve transportation safety and efficiency. The system validity and reliability is the key to make this system practical. However, presently there does not exit a comprehensive and effective test standard and environment to verify the system. In this paper, starting with the typical application demands of CVIS in intersections, it is built a framework of traffic scenes for the verification of CVIS under the intersection environment, through the extraction of static traffic elements such as the natural environment, intersection channelization, etc., as well as dynamic traffic elements such as various conflicts of pedestrian - vehicle, vehicle-vehicle, vehicle-traffic lights, etc. Moreover, it is designed some typical application scenes in intersections to instantiate the framework. Results of this paper can provide some guidance for the integrated verification of CVIS, and establish a practical foundation for the test and verification of typical CVIS applications under intersection environments as well.  
  关键词: cooperative vehicle infrastructure system, traffic scene, intersection, complex system  
  下载:         下载 [6 ]  
  vol   1 (1)  :101
 
   59. Design of Traffic Scenes in Intersections for Verification of Cooperative Vehicle Infrastructure System
    作者姓名: Duanfeng Chu, Jiansen Yang, Shaodan Chai, and Chaozhong Wu  
  摘要:   Cooperative Vehicle Infrastructure System (CVIS) which applies advanced communication technology, automatic control technology and computer technology to realize the interactions among human, vehicles and roads is a complex system to improve transportation safety and efficiency. The system validity and reliability is the key to make this system practical. However, presently there does not exit a comprehensive and effective test standard and environment to verify the system. In this paper, starting with the typical application demands of CVIS in intersections, it is built a framework of traffic scenes for the verification of CVIS under the intersection environment, through the extraction of static traffic elements such as the natural environment, intersection channelization, etc., as well as dynamic traffic elements such as various conflicts of pedestrian - vehicle, vehicle-vehicle, vehicle-traffic lights, etc. Moreover, it is designed some typical application scenes in intersections to instantiate the framework. Results of this paper can provide some guidance for the integrated verification of CVIS, and establish a practical foundation for the test and verification of typical CVIS applications under intersection environments as well.  
  关键词: cooperative vehicle infrastructure system, traffic scene, intersection, complex system  
  下载:         下载 [6 ]  
  vol   1 (1)  :101
 
   60. Design of Traffic Scenes in Intersections for Verification of Cooperative Vehicle Infrastructure System
    作者姓名: Duanfeng Chu, Jiansen Yang, Shaodan Chai, and Chaozhong Wu  
  摘要:   Cooperative Vehicle Infrastructure System (CVIS) which applies advanced communication technology, automatic control technology and computer technology to realize the interactions among human, vehicles and roads is a complex system to improve transportation safety and efficiency. The system validity and reliability is the key to make this system practical. However, presently there does not exit a comprehensive and effective test standard and environment to verify the system. In this paper, starting with the typical application demands of CVIS in intersections, it is built a framework of traffic scenes for the verification of CVIS under the intersection environment, through the extraction of static traffic elements such as the natural environment, intersection channelization, etc., as well as dynamic traffic elements such as various conflicts of pedestrian - vehicle, vehicle-vehicle, vehicle-traffic lights, etc. Moreover, it is designed some typical application scenes in intersections to instantiate the framework. Results of this paper can provide some guidance for the integrated verification of CVIS, and establish a practical foundation for the test and verification of typical CVIS applications under intersection environments as well.  
  关键词: cooperative vehicle infrastructure system, traffic scene, intersection, complex system  
  下载:         下载 [6 ]  
  vol   1 (1)  :101
 
   61. A SEM-based Study on Resident's Traffic Mode Choice Behavior in Beijing
    作者姓名: Hua Liu, Yanyan Chen, Yamei Hou, Jianhui Lai, Weiwei Zhang, and Kehan Wu  
  摘要:   The research of traffic mode choice behavior is the basis of traffic demand forecasting. By studying the resident's travel mode choice behavior, paper constructing the structure equation model to formulate the traffic demand management policy of the residents travel requirements based on this optimization of urban traffic structure and establishes the health of the transportation development mode from the perspective of behaviorism. The travel mode choice behavior of the urban resident is explored at the community scale. An example of Beijing is discussed and 349 samples from three communities are provided .Moreover, An interaction between the internal and external attribute and the travel behaviors of residents are presented which use the SEM. Among all of the variables, the internal and external attribute is the fundamental variables, while the travel purpose is the key variable. Resident's traffic mode choice behavior can be summarized as "internal and external attribute decided to travel purpose, travel purpose influences the travel time and travel mode". Through the quantitative analysis of interaction relations between departure time choice and travel time, we can get the influence of residents various attributes to walk, bicycles, buses and cars.  
  关键词: travel behavior;Traffic demand;SEM (structural equation model)  
  下载:         下载 [6 ]  
  vol   1 (1)  :112
 
   62. A SEM-based Study on Resident's Traffic Mode Choice Behavior in Beijing
    作者姓名: Hua Liu, Yanyan Chen, Yamei Hou, Jianhui Lai, Weiwei Zhang, and Kehan Wu  
  摘要:   The research of traffic mode choice behavior is the basis of traffic demand forecasting. By studying the resident's travel mode choice behavior, paper constructing the structure equation model to formulate the traffic demand management policy of the residents travel requirements based on this optimization of urban traffic structure and establishes the health of the transportation development mode from the perspective of behaviorism. The travel mode choice behavior of the urban resident is explored at the community scale. An example of Beijing is discussed and 349 samples from three communities are provided .Moreover, An interaction between the internal and external attribute and the travel behaviors of residents are presented which use the SEM. Among all of the variables, the internal and external attribute is the fundamental variables, while the travel purpose is the key variable. Resident's traffic mode choice behavior can be summarized as "internal and external attribute decided to travel purpose, travel purpose influences the travel time and travel mode". Through the quantitative analysis of interaction relations between departure time choice and travel time, we can get the influence of residents various attributes to walk, bicycles, buses and cars.  
  关键词: travel behavior;Traffic demand;SEM (structural equation model)  
  下载:         下载 [6 ]  
  vol   1 (1)  :112
 
   63. A SEM-based Study on Resident's Traffic Mode Choice Behavior in Beijing
    作者姓名: Hua Liu, Yanyan Chen, Yamei Hou, Jianhui Lai, Weiwei Zhang, and Kehan Wu  
  摘要:   The research of traffic mode choice behavior is the basis of traffic demand forecasting. By studying the resident's travel mode choice behavior, paper constructing the structure equation model to formulate the traffic demand management policy of the residents travel requirements based on this optimization of urban traffic structure and establishes the health of the transportation development mode from the perspective of behaviorism. The travel mode choice behavior of the urban resident is explored at the community scale. An example of Beijing is discussed and 349 samples from three communities are provided .Moreover, An interaction between the internal and external attribute and the travel behaviors of residents are presented which use the SEM. Among all of the variables, the internal and external attribute is the fundamental variables, while the travel purpose is the key variable. Resident's traffic mode choice behavior can be summarized as "internal and external attribute decided to travel purpose, travel purpose influences the travel time and travel mode". Through the quantitative analysis of interaction relations between departure time choice and travel time, we can get the influence of residents various attributes to walk, bicycles, buses and cars.  
  关键词: travel behavior;Traffic demand;SEM (structural equation model)  
  下载:         下载 [6 ]  
  vol   1 (1)  :112
 
   64. A SEM-based Study on Resident's Traffic Mode Choice Behavior in Beijing
    作者姓名: Hua Liu, Yanyan Chen, Yamei Hou, Jianhui Lai, Weiwei Zhang, and Kehan Wu  
  摘要:   The research of traffic mode choice behavior is the basis of traffic demand forecasting. By studying the resident's travel mode choice behavior, paper constructing the structure equation model to formulate the traffic demand management policy of the residents travel requirements based on this optimization of urban traffic structure and establishes the health of the transportation development mode from the perspective of behaviorism. The travel mode choice behavior of the urban resident is explored at the community scale. An example of Beijing is discussed and 349 samples from three communities are provided .Moreover, An interaction between the internal and external attribute and the travel behaviors of residents are presented which use the SEM. Among all of the variables, the internal and external attribute is the fundamental variables, while the travel purpose is the key variable. Resident's traffic mode choice behavior can be summarized as "internal and external attribute decided to travel purpose, travel purpose influences the travel time and travel mode". Through the quantitative analysis of interaction relations between departure time choice and travel time, we can get the influence of residents various attributes to walk, bicycles, buses and cars.  
  关键词: travel behavior;Traffic demand;SEM (structural equation model)  
  下载:         下载 [6 ]  
  vol   1 (1)  :112
 
   65. Driving Behavior Recognition Based on Sensors in Mobile Phone
    作者姓名: Jianxin Lu, Zhengzheng Jiang, and Dandan Wang  
  摘要:   The more traditional approach for driver behavior recognition is based on video signal processing techniques, with the disadvantages of undesirable modification the vehicle (e.g. mounting a video camera oriented toward drivers) and large amount of data processing. In this paper we proposed a new approach using smartphone sensor as a detection device to detect the behaviors and status of drivers. Our proposed method can detect several basic driving behaviors: starting or stopping, braking or acceleration, turning right or left. The experimental results confirm the feasibility of the method.  
  关键词: driving behavior, phone sensor detection, behavior recognition  
  下载:         下载 [6 ]  
  vol   1 (1)  :119
 
   66. Driving Behavior Recognition Based on Sensors in Mobile Phone
    作者姓名: Jianxin Lu, Zhengzheng Jiang, and Dandan Wang  
  摘要:   The more traditional approach for driver behavior recognition is based on video signal processing techniques, with the disadvantages of undesirable modification the vehicle (e.g. mounting a video camera oriented toward drivers) and large amount of data processing. In this paper we proposed a new approach using smartphone sensor as a detection device to detect the behaviors and status of drivers. Our proposed method can detect several basic driving behaviors: starting or stopping, braking or acceleration, turning right or left. The experimental results confirm the feasibility of the method.  
  关键词: driving behavior, phone sensor detection, behavior recognition  
  下载:         下载 [6 ]  
  vol   1 (1)  :119
 
   67. Driving Behavior Recognition Based on Sensors in Mobile Phone
    作者姓名: Jianxin Lu, Zhengzheng Jiang, and Dandan Wang  
  摘要:   The more traditional approach for driver behavior recognition is based on video signal processing techniques, with the disadvantages of undesirable modification the vehicle (e.g. mounting a video camera oriented toward drivers) and large amount of data processing. In this paper we proposed a new approach using smartphone sensor as a detection device to detect the behaviors and status of drivers. Our proposed method can detect several basic driving behaviors: starting or stopping, braking or acceleration, turning right or left. The experimental results confirm the feasibility of the method.  
  关键词: driving behavior, phone sensor detection, behavior recognition  
  下载:         下载 [6 ]  
  vol   1 (1)  :119
 
   68. Driving Behavior Recognition Based on Sensors in Mobile Phone
    作者姓名: Jianxin Lu, Zhengzheng Jiang, and Dandan Wang  
  摘要:   The more traditional approach for driver behavior recognition is based on video signal processing techniques, with the disadvantages of undesirable modification the vehicle (e.g. mounting a video camera oriented toward drivers) and large amount of data processing. In this paper we proposed a new approach using smartphone sensor as a detection device to detect the behaviors and status of drivers. Our proposed method can detect several basic driving behaviors: starting or stopping, braking or acceleration, turning right or left. The experimental results confirm the feasibility of the method.  
  关键词: driving behavior, phone sensor detection, behavior recognition  
  下载:         下载 [6 ]  
  vol   1 (1)  :119
 
   69. A Recognition Model for Lane Change Intention Based on Neural Network
    作者姓名: Chaozhong Wu, Yaqiu Li, Xiaofeng Ma, Hui Zhang, and Haoran Li  
  摘要:   Timely and accurate identification of driver’s intention is considered helpful to avoid collisions. Driving in an on-road traffic situation makes it much more difficult to recognize the driving intention because of the dynamic and uncertain information. However, the intentions can be inferred by the driver’s behaviors as he prepares to execute an action. The current studies focus on classifying driving intentions into car-following and lane changing. Therefore, lane change intention recognition method was proposed in this study. A total of 10 on-road experiments on freeway were conducted to acquire time headway, driver’s eye-motion data, steering angle and lane departure data. With these data, the typical features under free driving and lane change condition were analyzed respectively. Back-Propagation Neural Networks method was applied in this study to achieve the driving intention classification function. The proposed model successfully recognized 95 intentions in 100 lane change behaviors. The recognition result of the model can fit the target output at a degree of 0.99. This model is useful for surrounding drivers to choose the safest route to avoid collisions in the vehicle-infrastructure technology.  
  关键词: Lane change intention; On-road experiments; Back-Propagation Neural Networks; Recognition; Classification model;  
  下载:         下载 [6 ]  
  vol   1 (1)  :125
 
   70. A Recognition Model for Lane Change Intention Based on Neural Network
    作者姓名: Chaozhong Wu, Yaqiu Li, Xiaofeng Ma, Hui Zhang, and Haoran Li  
  摘要:   Timely and accurate identification of driver’s intention is considered helpful to avoid collisions. Driving in an on-road traffic situation makes it much more difficult to recognize the driving intention because of the dynamic and uncertain information. However, the intentions can be inferred by the driver’s behaviors as he prepares to execute an action. The current studies focus on classifying driving intentions into car-following and lane changing. Therefore, lane change intention recognition method was proposed in this study. A total of 10 on-road experiments on freeway were conducted to acquire time headway, driver’s eye-motion data, steering angle and lane departure data. With these data, the typical features under free driving and lane change condition were analyzed respectively. Back-Propagation Neural Networks method was applied in this study to achieve the driving intention classification function. The proposed model successfully recognized 95 intentions in 100 lane change behaviors. The recognition result of the model can fit the target output at a degree of 0.99. This model is useful for surrounding drivers to choose the safest route to avoid collisions in the vehicle-infrastructure technology.  
  关键词: Lane change intention; On-road experiments; Back-Propagation Neural Networks; Recognition; Classification model;  
  下载:         下载 [6 ]  
  vol   1 (1)  :125
 
   71. A Recognition Model for Lane Change Intention Based on Neural Network
    作者姓名: Chaozhong Wu, Yaqiu Li, Xiaofeng Ma, Hui Zhang, and Haoran Li  
  摘要:   Timely and accurate identification of driver’s intention is considered helpful to avoid collisions. Driving in an on-road traffic situation makes it much more difficult to recognize the driving intention because of the dynamic and uncertain information. However, the intentions can be inferred by the driver’s behaviors as he prepares to execute an action. The current studies focus on classifying driving intentions into car-following and lane changing. Therefore, lane change intention recognition method was proposed in this study. A total of 10 on-road experiments on freeway were conducted to acquire time headway, driver’s eye-motion data, steering angle and lane departure data. With these data, the typical features under free driving and lane change condition were analyzed respectively. Back-Propagation Neural Networks method was applied in this study to achieve the driving intention classification function. The proposed model successfully recognized 95 intentions in 100 lane change behaviors. The recognition result of the model can fit the target output at a degree of 0.99. This model is useful for surrounding drivers to choose the safest route to avoid collisions in the vehicle-infrastructure technology.  
  关键词: Lane change intention; On-road experiments; Back-Propagation Neural Networks; Recognition; Classification model;  
  下载:         下载 [6 ]  
  vol   1 (1)  :125
 
   72. A Recognition Model for Lane Change Intention Based on Neural Network
    作者姓名: Chaozhong Wu, Yaqiu Li, Xiaofeng Ma, Hui Zhang, and Haoran Li  
  摘要:   Timely and accurate identification of driver’s intention is considered helpful to avoid collisions. Driving in an on-road traffic situation makes it much more difficult to recognize the driving intention because of the dynamic and uncertain information. However, the intentions can be inferred by the driver’s behaviors as he prepares to execute an action. The current studies focus on classifying driving intentions into car-following and lane changing. Therefore, lane change intention recognition method was proposed in this study. A total of 10 on-road experiments on freeway were conducted to acquire time headway, driver’s eye-motion data, steering angle and lane departure data. With these data, the typical features under free driving and lane change condition were analyzed respectively. Back-Propagation Neural Networks method was applied in this study to achieve the driving intention classification function. The proposed model successfully recognized 95 intentions in 100 lane change behaviors. The recognition result of the model can fit the target output at a degree of 0.99. This model is useful for surrounding drivers to choose the safest route to avoid collisions in the vehicle-infrastructure technology.  
  关键词: Lane change intention; On-road experiments; Back-Propagation Neural Networks; Recognition; Classification model;  
  下载:         下载 [6 ]  
  vol   1 (1)  :125
 
   73. On the Crossing Contribute to Traffic Congestion Problem Analysis and Countermeasure Research
    作者姓名: Fei Li  
  摘要:   In the United States, Britain, France, Russia, China and other countries of the city and the region, much of the road crossing traffic occur traffic congestion problems.During a storm, earthquake, war and other special circumstances, some cross sections are even completely off, and cannot be recovered timely. In order to avoid such situations, we need to destroy the old transportation scheme and establish the new ones. Redesigned the transportation scheme, using" push stone" method, to cancel the traffic light, dismantle the overpass, convert the stereo traffic for plane transportation, realize the 0 traffic congestion, establishing a push stone traffic model consists of 7 parts : polymerization area, bifurcation area, back area, straight area, surround area, off area and service area, these parts all solve congestion problem that caused by cross traffic in the world.  
  关键词: push the stone, cross traffic, 0 traffic congestion,plane traffic, stereo traffic, green traffic, cancel the traffic light,cancel the overpass.  
  下载:         下载 [6 ]  
  vol   1 (1)  :131
 
   74. On the Crossing Contribute to Traffic Congestion Problem Analysis and Countermeasure Research
    作者姓名: Fei Li  
  摘要:   In the United States, Britain, France, Russia, China and other countries of the city and the region, much of the road crossing traffic occur traffic congestion problems.During a storm, earthquake, war and other special circumstances, some cross sections are even completely off, and cannot be recovered timely. In order to avoid such situations, we need to destroy the old transportation scheme and establish the new ones. Redesigned the transportation scheme, using" push stone" method, to cancel the traffic light, dismantle the overpass, convert the stereo traffic for plane transportation, realize the 0 traffic congestion, establishing a push stone traffic model consists of 7 parts : polymerization area, bifurcation area, back area, straight area, surround area, off area and service area, these parts all solve congestion problem that caused by cross traffic in the world.  
  关键词: push the stone, cross traffic, 0 traffic congestion,plane traffic, stereo traffic, green traffic, cancel the traffic light,cancel the overpass.  
  下载:         下载 [6 ]  
  vol   1 (1)  :131
 
   75. On the Crossing Contribute to Traffic Congestion Problem Analysis and Countermeasure Research
    作者姓名: Fei Li  
  摘要:   In the United States, Britain, France, Russia, China and other countries of the city and the region, much of the road crossing traffic occur traffic congestion problems.During a storm, earthquake, war and other special circumstances, some cross sections are even completely off, and cannot be recovered timely. In order to avoid such situations, we need to destroy the old transportation scheme and establish the new ones. Redesigned the transportation scheme, using" push stone" method, to cancel the traffic light, dismantle the overpass, convert the stereo traffic for plane transportation, realize the 0 traffic congestion, establishing a push stone traffic model consists of 7 parts : polymerization area, bifurcation area, back area, straight area, surround area, off area and service area, these parts all solve congestion problem that caused by cross traffic in the world.  
  关键词: push the stone, cross traffic, 0 traffic congestion,plane traffic, stereo traffic, green traffic, cancel the traffic light,cancel the overpass.  
  下载:         下载 [6 ]  
  vol   1 (1)  :131
 
   76. On the Crossing Contribute to Traffic Congestion Problem Analysis and Countermeasure Research
    作者姓名: Fei Li  
  摘要:   In the United States, Britain, France, Russia, China and other countries of the city and the region, much of the road crossing traffic occur traffic congestion problems.During a storm, earthquake, war and other special circumstances, some cross sections are even completely off, and cannot be recovered timely. In order to avoid such situations, we need to destroy the old transportation scheme and establish the new ones. Redesigned the transportation scheme, using" push stone" method, to cancel the traffic light, dismantle the overpass, convert the stereo traffic for plane transportation, realize the 0 traffic congestion, establishing a push stone traffic model consists of 7 parts : polymerization area, bifurcation area, back area, straight area, surround area, off area and service area, these parts all solve congestion problem that caused by cross traffic in the world.  
  关键词: push the stone, cross traffic, 0 traffic congestion,plane traffic, stereo traffic, green traffic, cancel the traffic light,cancel the overpass.  
  下载:         下载 [6 ]  
  vol   1 (1)  :131
 
   77. Research on the Impact Test Conditions of Safety Barriers on Mountain Rural Roads
    作者姓名: Xiaoyi Mi, Jingmei Wu, and Yu Chen  
  摘要:   In order to improve the efficiency of the development of safety barriers, the datum of the mountain rural road, including traffic composition, operational speed, crashes and road horizontal alignment, were collected and the impact test conditions of safety barriers were determined. The vehicle type which needs a key protection and its actual mass status were considered in the selection of the test vehicle type and its mass. Using the method of statistical analysis, the operational speed of the corresponding vehicle type was selected as the impact speed. Based on the analysis of crash cases and road horizontal alignment, the impact angle was confirmed. Comprehensive consideration of china’s current economic conditions, the goal of crash prevention and the system construction of the performance classes, it was determined that the safety barrier’s containment energy is 70KJ and the performance class is B on the mountain rural road. The corresponding impact test conditions are 19-seats minibus weighted 6t, 42km/h, and 25-degrees.  
  关键词: Mountain Rural Road; Safety Barrier; Impact test conditions; Test level  
  下载:         下载 [6 ]  
  vol   1 (1)  :139
 
   78. Research on the Impact Test Conditions of Safety Barriers on Mountain Rural Roads
    作者姓名: Xiaoyi Mi, Jingmei Wu, and Yu Chen  
  摘要:   In order to improve the efficiency of the development of safety barriers, the datum of the mountain rural road, including traffic composition, operational speed, crashes and road horizontal alignment, were collected and the impact test conditions of safety barriers were determined. The vehicle type which needs a key protection and its actual mass status were considered in the selection of the test vehicle type and its mass. Using the method of statistical analysis, the operational speed of the corresponding vehicle type was selected as the impact speed. Based on the analysis of crash cases and road horizontal alignment, the impact angle was confirmed. Comprehensive consideration of china’s current economic conditions, the goal of crash prevention and the system construction of the performance classes, it was determined that the safety barrier’s containment energy is 70KJ and the performance class is B on the mountain rural road. The corresponding impact test conditions are 19-seats minibus weighted 6t, 42km/h, and 25-degrees.  
  关键词: Mountain Rural Road; Safety Barrier; Impact test conditions; Test level  
  下载:         下载 [6 ]  
  vol   1 (1)  :139
 
   79. Research on the Impact Test Conditions of Safety Barriers on Mountain Rural Roads
    作者姓名: Xiaoyi Mi, Jingmei Wu, and Yu Chen  
  摘要:   In order to improve the efficiency of the development of safety barriers, the datum of the mountain rural road, including traffic composition, operational speed, crashes and road horizontal alignment, were collected and the impact test conditions of safety barriers were determined. The vehicle type which needs a key protection and its actual mass status were considered in the selection of the test vehicle type and its mass. Using the method of statistical analysis, the operational speed of the corresponding vehicle type was selected as the impact speed. Based on the analysis of crash cases and road horizontal alignment, the impact angle was confirmed. Comprehensive consideration of china’s current economic conditions, the goal of crash prevention and the system construction of the performance classes, it was determined that the safety barrier’s containment energy is 70KJ and the performance class is B on the mountain rural road. The corresponding impact test conditions are 19-seats minibus weighted 6t, 42km/h, and 25-degrees.  
  关键词: Mountain Rural Road; Safety Barrier; Impact test conditions; Test level  
  下载:         下载 [6 ]  
  vol   1 (1)  :139
 
   80. Research on the Impact Test Conditions of Safety Barriers on Mountain Rural Roads
    作者姓名: Xiaoyi Mi, Jingmei Wu, and Yu Chen  
  摘要:   In order to improve the efficiency of the development of safety barriers, the datum of the mountain rural road, including traffic composition, operational speed, crashes and road horizontal alignment, were collected and the impact test conditions of safety barriers were determined. The vehicle type which needs a key protection and its actual mass status were considered in the selection of the test vehicle type and its mass. Using the method of statistical analysis, the operational speed of the corresponding vehicle type was selected as the impact speed. Based on the analysis of crash cases and road horizontal alignment, the impact angle was confirmed. Comprehensive consideration of china’s current economic conditions, the goal of crash prevention and the system construction of the performance classes, it was determined that the safety barrier’s containment energy is 70KJ and the performance class is B on the mountain rural road. The corresponding impact test conditions are 19-seats minibus weighted 6t, 42km/h, and 25-degrees.  
  关键词: Mountain Rural Road; Safety Barrier; Impact test conditions; Test level  
  下载:         下载 [6 ]  
  vol   1 (1)  :139
 
   81. Correlations of Speed Standard Deviation and Traffic Conflict for Two-lane Highways
    作者姓名: Dehua Wu  
  摘要:   To evaluate the correlation between speed standard deviation and traffic conflict of two-lane highway, based on the analysis of the relations among speed standard deviation, strength of traffic conflict and traffic accident rate, the internal relations are compared and developed theoretically. According to measured data in provincial Highway 203 of Fujian, the correlation between speed standard deviation and traffic conflict of two-lane highway is constructed. The analysis results indicate that the correlation of polynomial regression model is highest up to 0.79 among various regression models. It is concluded that the high correlation existence between speed standard deviation and strength of traffic conflict of two-lane highway.  
  关键词: Two-lane Highway, Speed Standard Deviation, Traffic Conflict, Correlation  
  下载:         下载 [6 ]  
  vol   1 (1)  :145
 
   82. Correlations of Speed Standard Deviation and Traffic Conflict for Two-lane Highways
    作者姓名: Dehua Wu  
  摘要:   To evaluate the correlation between speed standard deviation and traffic conflict of two-lane highway, based on the analysis of the relations among speed standard deviation, strength of traffic conflict and traffic accident rate, the internal relations are compared and developed theoretically. According to measured data in provincial Highway 203 of Fujian, the correlation between speed standard deviation and traffic conflict of two-lane highway is constructed. The analysis results indicate that the correlation of polynomial regression model is highest up to 0.79 among various regression models. It is concluded that the high correlation existence between speed standard deviation and strength of traffic conflict of two-lane highway.  
  关键词: Two-lane Highway, Speed Standard Deviation, Traffic Conflict, Correlation  
  下载:         下载 [6 ]  
  vol   1 (1)  :145
 
   83. Correlations of Speed Standard Deviation and Traffic Conflict for Two-lane Highways
    作者姓名: Dehua Wu  
  摘要:   To evaluate the correlation between speed standard deviation and traffic conflict of two-lane highway, based on the analysis of the relations among speed standard deviation, strength of traffic conflict and traffic accident rate, the internal relations are compared and developed theoretically. According to measured data in provincial Highway 203 of Fujian, the correlation between speed standard deviation and traffic conflict of two-lane highway is constructed. The analysis results indicate that the correlation of polynomial regression model is highest up to 0.79 among various regression models. It is concluded that the high correlation existence between speed standard deviation and strength of traffic conflict of two-lane highway.  
  关键词: Two-lane Highway, Speed Standard Deviation, Traffic Conflict, Correlation  
  下载:         下载 [6 ]  
  vol   1 (1)  :145
 
   84. Correlations of Speed Standard Deviation and Traffic Conflict for Two-lane Highways
    作者姓名: Dehua Wu  
  摘要:   To evaluate the correlation between speed standard deviation and traffic conflict of two-lane highway, based on the analysis of the relations among speed standard deviation, strength of traffic conflict and traffic accident rate, the internal relations are compared and developed theoretically. According to measured data in provincial Highway 203 of Fujian, the correlation between speed standard deviation and traffic conflict of two-lane highway is constructed. The analysis results indicate that the correlation of polynomial regression model is highest up to 0.79 among various regression models. It is concluded that the high correlation existence between speed standard deviation and strength of traffic conflict of two-lane highway.  
  关键词: Two-lane Highway, Speed Standard Deviation, Traffic Conflict, Correlation  
  下载:         下载 [6 ]  
  vol   1 (1)  :145
 
   85. Design of Emergency Accident Handling System for Expressways
    作者姓名: Lin Mao and Juan Yao  
  摘要:   The expressway has played a great role in promoting the development of the national economy in China, but because of its characteristics, which are high speed, all closed, and have great traffic flow, once unexpected incidents occur, the incidents are harmer than ordinary. The purpose of this paper is to provide scientific and technical support for incident decision-making method on expressway. With the methods of data report, data collection, data input, data analysis, incident management, and leader decision, the effective operation of inquiry and analysis mechanism is the issue of concern in this paper. Based on the Intelligent Transportation System, expressway emergency processing system uses new technology and ways to handle the accident quickly, accurately locate and identify dynamic rapid rescue lines, and to solve the issue by new ideas. Three layers of calculation structures are established involving standard web server, applied server, and database server. Also, distributed objected-orient design method, TCP/IP safety protocol, and java web service technique are applied. Based on geophysical and geographical data, warning database, crisis database, prediction and evaluation models, emergency command database, and expert knowledge database are finally established.  
  关键词: expressway emergency; Intelligent Transportation System; Global Positioning System  
  下载:         下载 [6 ]  
  vol   1 (1)  :152
 
   86. Design of Emergency Accident Handling System for Expressways
    作者姓名: Lin Mao and Juan Yao  
  摘要:   The expressway has played a great role in promoting the development of the national economy in China, but because of its characteristics, which are high speed, all closed, and have great traffic flow, once unexpected incidents occur, the incidents are harmer than ordinary. The purpose of this paper is to provide scientific and technical support for incident decision-making method on expressway. With the methods of data report, data collection, data input, data analysis, incident management, and leader decision, the effective operation of inquiry and analysis mechanism is the issue of concern in this paper. Based on the Intelligent Transportation System, expressway emergency processing system uses new technology and ways to handle the accident quickly, accurately locate and identify dynamic rapid rescue lines, and to solve the issue by new ideas. Three layers of calculation structures are established involving standard web server, applied server, and database server. Also, distributed objected-orient design method, TCP/IP safety protocol, and java web service technique are applied. Based on geophysical and geographical data, warning database, crisis database, prediction and evaluation models, emergency command database, and expert knowledge database are finally established.  
  关键词: expressway emergency; Intelligent Transportation System; Global Positioning System  
  下载:         下载 [6 ]  
  vol   1 (1)  :152
 
   87. Design of Emergency Accident Handling System for Expressways
    作者姓名: Lin Mao and Juan Yao  
  摘要:   The expressway has played a great role in promoting the development of the national economy in China, but because of its characteristics, which are high speed, all closed, and have great traffic flow, once unexpected incidents occur, the incidents are harmer than ordinary. The purpose of this paper is to provide scientific and technical support for incident decision-making method on expressway. With the methods of data report, data collection, data input, data analysis, incident management, and leader decision, the effective operation of inquiry and analysis mechanism is the issue of concern in this paper. Based on the Intelligent Transportation System, expressway emergency processing system uses new technology and ways to handle the accident quickly, accurately locate and identify dynamic rapid rescue lines, and to solve the issue by new ideas. Three layers of calculation structures are established involving standard web server, applied server, and database server. Also, distributed objected-orient design method, TCP/IP safety protocol, and java web service technique are applied. Based on geophysical and geographical data, warning database, crisis database, prediction and evaluation models, emergency command database, and expert knowledge database are finally established.  
  关键词: expressway emergency; Intelligent Transportation System; Global Positioning System  
  下载:         下载 [6 ]  
  vol   1 (1)  :152
 
   88. Design of Emergency Accident Handling System for Expressways
    作者姓名: Lin Mao and Juan Yao  
  摘要:   The expressway has played a great role in promoting the development of the national economy in China, but because of its characteristics, which are high speed, all closed, and have great traffic flow, once unexpected incidents occur, the incidents are harmer than ordinary. The purpose of this paper is to provide scientific and technical support for incident decision-making method on expressway. With the methods of data report, data collection, data input, data analysis, incident management, and leader decision, the effective operation of inquiry and analysis mechanism is the issue of concern in this paper. Based on the Intelligent Transportation System, expressway emergency processing system uses new technology and ways to handle the accident quickly, accurately locate and identify dynamic rapid rescue lines, and to solve the issue by new ideas. Three layers of calculation structures are established involving standard web server, applied server, and database server. Also, distributed objected-orient design method, TCP/IP safety protocol, and java web service technique are applied. Based on geophysical and geographical data, warning database, crisis database, prediction and evaluation models, emergency command database, and expert knowledge database are finally established.  
  关键词: expressway emergency; Intelligent Transportation System; Global Positioning System  
  下载:         下载 [6 ]  
  vol   1 (1)  :152
 
   89. Study on Quantitative Evaluation of Control Information of Expressway Guide Sign Based on Network Toll Collection Data Analysis
    作者姓名: Yucai Song, Huixue Liu, and Shufang Ge  
  摘要:   Expressway guide sign is very important for traffic safety. The selection of control information of expressway guide sign has a strong impact on the effectiveness of expressway guide sign. Most of the previous studies on the evaluation of control information of expressway guide sign are aimed at qualitative analysis or quantitative analysis without considering the data of operating period, especially the network toll collection data. So some systematic investigation and analysis work are done using the network toll collection data collected from Guangxi Zhuang Autonomous Region in China. The useful data are abstracted and the calculation method of cross-sectional traffic volume is provided. Based on these analyses, the concept of traffic gravitation is proposed and model of traffic gravitation between two cities are built, which considers the factor of distance, the factor of cross-sectional traffic volume, and the factor of regional differences in China. The value of traffic gravitation can be calculated by the model of traffic gravitation. By comparison of the value of traffic gravitation among different control information, the control information whose traffic gravitation value is largest can be selected as the right control information. In this way the present control information can also be evaluated. The flow chart of evaluation of control information of expressway guide sign is also provided. This quantitative evaluation method has already been used for road safety evaluation in Guangxi Zhuang Autonomous Region in China.  
  关键词: Quantitative evaluation; Expressway guide sign; Control information; Traffic gravitation; Network toll collection data analysis;  
  下载:         下载 [6 ]  
  vol   1 (1)  :159
 
   90. Study on Quantitative Evaluation of Control Information of Expressway Guide Sign Based on Network Toll Collection Data Analysis
    作者姓名: Yucai Song, Huixue Liu, and Shufang Ge  
  摘要:   Expressway guide sign is very important for traffic safety. The selection of control information of expressway guide sign has a strong impact on the effectiveness of expressway guide sign. Most of the previous studies on the evaluation of control information of expressway guide sign are aimed at qualitative analysis or quantitative analysis without considering the data of operating period, especially the network toll collection data. So some systematic investigation and analysis work are done using the network toll collection data collected from Guangxi Zhuang Autonomous Region in China. The useful data are abstracted and the calculation method of cross-sectional traffic volume is provided. Based on these analyses, the concept of traffic gravitation is proposed and model of traffic gravitation between two cities are built, which considers the factor of distance, the factor of cross-sectional traffic volume, and the factor of regional differences in China. The value of traffic gravitation can be calculated by the model of traffic gravitation. By comparison of the value of traffic gravitation among different control information, the control information whose traffic gravitation value is largest can be selected as the right control information. In this way the present control information can also be evaluated. The flow chart of evaluation of control information of expressway guide sign is also provided. This quantitative evaluation method has already been used for road safety evaluation in Guangxi Zhuang Autonomous Region in China.  
  关键词: Quantitative evaluation; Expressway guide sign; Control information; Traffic gravitation; Network toll collection data analysis;  
  下载:         下载 [6 ]  
  vol   1 (1)  :159
 
   91. Study on Quantitative Evaluation of Control Information of Expressway Guide Sign Based on Network Toll Collection Data Analysis
    作者姓名: Yucai Song, Huixue Liu, and Shufang Ge  
  摘要:   Expressway guide sign is very important for traffic safety. The selection of control information of expressway guide sign has a strong impact on the effectiveness of expressway guide sign. Most of the previous studies on the evaluation of control information of expressway guide sign are aimed at qualitative analysis or quantitative analysis without considering the data of operating period, especially the network toll collection data. So some systematic investigation and analysis work are done using the network toll collection data collected from Guangxi Zhuang Autonomous Region in China. The useful data are abstracted and the calculation method of cross-sectional traffic volume is provided. Based on these analyses, the concept of traffic gravitation is proposed and model of traffic gravitation between two cities are built, which considers the factor of distance, the factor of cross-sectional traffic volume, and the factor of regional differences in China. The value of traffic gravitation can be calculated by the model of traffic gravitation. By comparison of the value of traffic gravitation among different control information, the control information whose traffic gravitation value is largest can be selected as the right control information. In this way the present control information can also be evaluated. The flow chart of evaluation of control information of expressway guide sign is also provided. This quantitative evaluation method has already been used for road safety evaluation in Guangxi Zhuang Autonomous Region in China.  
  关键词: Quantitative evaluation; Expressway guide sign; Control information; Traffic gravitation; Network toll collection data analysis;  
  下载:         下载 [6 ]  
  vol   1 (1)  :159
 
   92. Study on Quantitative Evaluation of Control Information of Expressway Guide Sign Based on Network Toll Collection Data Analysis
    作者姓名: Yucai Song, Huixue Liu, and Shufang Ge  
  摘要:   Expressway guide sign is very important for traffic safety. The selection of control information of expressway guide sign has a strong impact on the effectiveness of expressway guide sign. Most of the previous studies on the evaluation of control information of expressway guide sign are aimed at qualitative analysis or quantitative analysis without considering the data of operating period, especially the network toll collection data. So some systematic investigation and analysis work are done using the network toll collection data collected from Guangxi Zhuang Autonomous Region in China. The useful data are abstracted and the calculation method of cross-sectional traffic volume is provided. Based on these analyses, the concept of traffic gravitation is proposed and model of traffic gravitation between two cities are built, which considers the factor of distance, the factor of cross-sectional traffic volume, and the factor of regional differences in China. The value of traffic gravitation can be calculated by the model of traffic gravitation. By comparison of the value of traffic gravitation among different control information, the control information whose traffic gravitation value is largest can be selected as the right control information. In this way the present control information can also be evaluated. The flow chart of evaluation of control information of expressway guide sign is also provided. This quantitative evaluation method has already been used for road safety evaluation in Guangxi Zhuang Autonomous Region in China.  
  关键词: Quantitative evaluation; Expressway guide sign; Control information; Traffic gravitation; Network toll collection data analysis;  
  下载:         下载 [6 ]  
  vol   1 (1)  :159
 
   93. Motor Vehicle Running-Speed Monitoring and Controlling System for Freeway Network
    作者姓名: Aifen Fang and Changjun Wang  
  摘要:   In order to effectively attack motor vehicle speeding violations on freeway network and to prevent road accidents, the paper describes the current situation and problems of freeway traffic safety control in China, puts forward solutions for monitoring and controlling motor vehicle running-speed on freeways. By integrating the technologies of motor vehicle monitoring, license plate recognition, mass information transmission and communication, distributed computing etc, vehicle’s point-to-point speed on its whole travel sections can be obtained and then we can promptly notify the speeding drivers in right time and places, or even give tickets to those drivers at toll stations. We can also periodically evaluate the traffic safety situations on the freeways. The monitoring and controlling software was developed and implemented. The demonstration project in Jiangsu province proved that the system functioned effectively, and enhanced the dynamic enforcement capacity of traffic police departments. This paper describes the overall architecture and the main features of the software system and discusses the key technologies and solutions.  
  关键词: Freeway Network, point-to-point speed, speeding violation  
  下载:         下载 [6 ]  
  vol   1 (1)  :166
 
   94. Motor Vehicle Running-Speed Monitoring and Controlling System for Freeway Network
    作者姓名: Aifen Fang and Changjun Wang  
  摘要:   In order to effectively attack motor vehicle speeding violations on freeway network and to prevent road accidents, the paper describes the current situation and problems of freeway traffic safety control in China, puts forward solutions for monitoring and controlling motor vehicle running-speed on freeways. By integrating the technologies of motor vehicle monitoring, license plate recognition, mass information transmission and communication, distributed computing etc, vehicle’s point-to-point speed on its whole travel sections can be obtained and then we can promptly notify the speeding drivers in right time and places, or even give tickets to those drivers at toll stations. We can also periodically evaluate the traffic safety situations on the freeways. The monitoring and controlling software was developed and implemented. The demonstration project in Jiangsu province proved that the system functioned effectively, and enhanced the dynamic enforcement capacity of traffic police departments. This paper describes the overall architecture and the main features of the software system and discusses the key technologies and solutions.  
  关键词: Freeway Network, point-to-point speed, speeding violation  
  下载:         下载 [6 ]  
  vol   1 (1)  :166
 
   95. Motor Vehicle Running-Speed Monitoring and Controlling System for Freeway Network
    作者姓名: Aifen Fang and Changjun Wang  
  摘要:   In order to effectively attack motor vehicle speeding violations on freeway network and to prevent road accidents, the paper describes the current situation and problems of freeway traffic safety control in China, puts forward solutions for monitoring and controlling motor vehicle running-speed on freeways. By integrating the technologies of motor vehicle monitoring, license plate recognition, mass information transmission and communication, distributed computing etc, vehicle’s point-to-point speed on its whole travel sections can be obtained and then we can promptly notify the speeding drivers in right time and places, or even give tickets to those drivers at toll stations. We can also periodically evaluate the traffic safety situations on the freeways. The monitoring and controlling software was developed and implemented. The demonstration project in Jiangsu province proved that the system functioned effectively, and enhanced the dynamic enforcement capacity of traffic police departments. This paper describes the overall architecture and the main features of the software system and discusses the key technologies and solutions.  
  关键词: Freeway Network, point-to-point speed, speeding violation  
  下载:         下载 [6 ]  
  vol   1 (1)  :166
 
   96. Motor Vehicle Running-Speed Monitoring and Controlling System for Freeway Network
    作者姓名: Aifen Fang and Changjun Wang  
  摘要:   In order to effectively attack motor vehicle speeding violations on freeway network and to prevent road accidents, the paper describes the current situation and problems of freeway traffic safety control in China, puts forward solutions for monitoring and controlling motor vehicle running-speed on freeways. By integrating the technologies of motor vehicle monitoring, license plate recognition, mass information transmission and communication, distributed computing etc, vehicle’s point-to-point speed on its whole travel sections can be obtained and then we can promptly notify the speeding drivers in right time and places, or even give tickets to those drivers at toll stations. We can also periodically evaluate the traffic safety situations on the freeways. The monitoring and controlling software was developed and implemented. The demonstration project in Jiangsu province proved that the system functioned effectively, and enhanced the dynamic enforcement capacity of traffic police departments. This paper describes the overall architecture and the main features of the software system and discusses the key technologies and solutions.  
  关键词: Freeway Network, point-to-point speed, speeding violation  
  下载:         下载 [6 ]  
  vol   1 (1)  :166
 
   97. Piezoresistivity of Cement-based Composites Containing Copper-coated Steel Fiber and Graphite
    作者姓名: Tao Liu, Mingqing Sun, Jun Li, Yingjun Wang, and Wenming Sun  
  摘要:   Both electrical properties and piezoresistive behavior of cement-based composites containing copper-coated steel fiber (0.5 vol.%) and graphite powder (0~25 % by mass of the binder) were investigated. This type of material can be used as sensors to be embedded into pavement for traffic weighing, or into bridges for strain sensing. The change in resistivity of this material with stress under cyclic uniaxial loading was tested. No matter what the content of graphite powder was added in the composite, the corresponding relationship between stress and resistance variation can be observed. Results showed that when the content of graphite powder was 15%, the sensitivity to stress was higher relative to the others contents of graphite powder while its resistivity of electrically was 1.68×102Ω?m, and the compressive strength was 40.3MPa at 28 days.  
  关键词: steel fiber; graphite powder; piezoresistivity; traffic monitoring  
  下载:         下载 [6 ]  
  vol   1 (1)  :172
 
   98. Piezoresistivity of Cement-based Composites Containing Copper-coated Steel Fiber and Graphite
    作者姓名: Tao Liu, Mingqing Sun, Jun Li, Yingjun Wang, and Wenming Sun  
  摘要:   Both electrical properties and piezoresistive behavior of cement-based composites containing copper-coated steel fiber (0.5 vol.%) and graphite powder (0~25 % by mass of the binder) were investigated. This type of material can be used as sensors to be embedded into pavement for traffic weighing, or into bridges for strain sensing. The change in resistivity of this material with stress under cyclic uniaxial loading was tested. No matter what the content of graphite powder was added in the composite, the corresponding relationship between stress and resistance variation can be observed. Results showed that when the content of graphite powder was 15%, the sensitivity to stress was higher relative to the others contents of graphite powder while its resistivity of electrically was 1.68×102Ω?m, and the compressive strength was 40.3MPa at 28 days.  
  关键词: steel fiber; graphite powder; piezoresistivity; traffic monitoring  
  下载:         下载 [6 ]  
  vol   1 (1)  :172
 
   99. Piezoresistivity of Cement-based Composites Containing Copper-coated Steel Fiber and Graphite
    作者姓名: Tao Liu, Mingqing Sun, Jun Li, Yingjun Wang, and Wenming Sun  
  摘要:   Both electrical properties and piezoresistive behavior of cement-based composites containing copper-coated steel fiber (0.5 vol.%) and graphite powder (0~25 % by mass of the binder) were investigated. This type of material can be used as sensors to be embedded into pavement for traffic weighing, or into bridges for strain sensing. The change in resistivity of this material with stress under cyclic uniaxial loading was tested. No matter what the content of graphite powder was added in the composite, the corresponding relationship between stress and resistance variation can be observed. Results showed that when the content of graphite powder was 15%, the sensitivity to stress was higher relative to the others contents of graphite powder while its resistivity of electrically was 1.68×102Ω?m, and the compressive strength was 40.3MPa at 28 days.  
  关键词: steel fiber; graphite powder; piezoresistivity; traffic monitoring  
  下载:         下载 [6 ]  
  vol   1 (1)  :172
 
   100. Piezoresistivity of Cement-based Composites Containing Copper-coated Steel Fiber and Graphite
    作者姓名: Tao Liu, Mingqing Sun, Jun Li, Yingjun Wang, and Wenming Sun  
  摘要:   Both electrical properties and piezoresistive behavior of cement-based composites containing copper-coated steel fiber (0.5 vol.%) and graphite powder (0~25 % by mass of the binder) were investigated. This type of material can be used as sensors to be embedded into pavement for traffic weighing, or into bridges for strain sensing. The change in resistivity of this material with stress under cyclic uniaxial loading was tested. No matter what the content of graphite powder was added in the composite, the corresponding relationship between stress and resistance variation can be observed. Results showed that when the content of graphite powder was 15%, the sensitivity to stress was higher relative to the others contents of graphite powder while its resistivity of electrically was 1.68×102Ω?m, and the compressive strength was 40.3MPa at 28 days.  
  关键词: steel fiber; graphite powder; piezoresistivity; traffic monitoring  
  下载:         下载 [6 ]  
  vol   1 (1)  :172
 
   101. Study on Risk Evaluation Methods of Road Work Zone on Urban Expressway
    作者姓名: Feng Lu, Shaowu Qian, and Yunlong Wang  
  摘要:   Road working on urban expressway usually, in a certain time period, reduces road capacity, worsens traffic safety, and therefore results in relevant traffic operational risks and traffic safety risks. At present, in the situation of more frequent road workings, it is important, in terms of improving traffic safety management of urban expressway road working, to study the risk evaluation methods of road work zone on urban expressway systematically, and to evaluate the traffic safety risks and traffic operational risks of road work zone on urban expressway precisely. In this paper, the traffic safety risk and traffic operational risk of road work zone on urban expressway were explored, and based on consistency analysis of operating speed and traffic performance analysis, the risk evaluation methods of road work zone on urban expressway were established. On the basis of application on risk evaluation of road work zone on Beijing expressway, the effectiveness of risk evaluation methods of road work zone was verified, and improving measures on reducing traffic safety risks and traffic operational risks were presented.  
  关键词: Risk evaluation, road working, urban expressway  
  下载:         下载 [6 ]  
  vol   1 (1)  :178
 
   102. Study on Risk Evaluation Methods of Road Work Zone on Urban Expressway
    作者姓名: Feng Lu, Shaowu Qian, and Yunlong Wang  
  摘要:   Road working on urban expressway usually, in a certain time period, reduces road capacity, worsens traffic safety, and therefore results in relevant traffic operational risks and traffic safety risks. At present, in the situation of more frequent road workings, it is important, in terms of improving traffic safety management of urban expressway road working, to study the risk evaluation methods of road work zone on urban expressway systematically, and to evaluate the traffic safety risks and traffic operational risks of road work zone on urban expressway precisely. In this paper, the traffic safety risk and traffic operational risk of road work zone on urban expressway were explored, and based on consistency analysis of operating speed and traffic performance analysis, the risk evaluation methods of road work zone on urban expressway were established. On the basis of application on risk evaluation of road work zone on Beijing expressway, the effectiveness of risk evaluation methods of road work zone was verified, and improving measures on reducing traffic safety risks and traffic operational risks were presented.  
  关键词: Risk evaluation, road working, urban expressway  
  下载:         下载 [6 ]  
  vol   1 (1)  :178
 
   103. Study on Risk Evaluation Methods of Road Work Zone on Urban Expressway
    作者姓名: Feng Lu, Shaowu Qian, and Yunlong Wang  
  摘要:   Road working on urban expressway usually, in a certain time period, reduces road capacity, worsens traffic safety, and therefore results in relevant traffic operational risks and traffic safety risks. At present, in the situation of more frequent road workings, it is important, in terms of improving traffic safety management of urban expressway road working, to study the risk evaluation methods of road work zone on urban expressway systematically, and to evaluate the traffic safety risks and traffic operational risks of road work zone on urban expressway precisely. In this paper, the traffic safety risk and traffic operational risk of road work zone on urban expressway were explored, and based on consistency analysis of operating speed and traffic performance analysis, the risk evaluation methods of road work zone on urban expressway were established. On the basis of application on risk evaluation of road work zone on Beijing expressway, the effectiveness of risk evaluation methods of road work zone was verified, and improving measures on reducing traffic safety risks and traffic operational risks were presented.  
  关键词: Risk evaluation, road working, urban expressway  
  下载:         下载 [6 ]  
  vol   1 (1)  :178
 
   104. Study on Risk Evaluation Methods of Road Work Zone on Urban Expressway
    作者姓名: Feng Lu, Shaowu Qian, and Yunlong Wang  
  摘要:   Road working on urban expressway usually, in a certain time period, reduces road capacity, worsens traffic safety, and therefore results in relevant traffic operational risks and traffic safety risks. At present, in the situation of more frequent road workings, it is important, in terms of improving traffic safety management of urban expressway road working, to study the risk evaluation methods of road work zone on urban expressway systematically, and to evaluate the traffic safety risks and traffic operational risks of road work zone on urban expressway precisely. In this paper, the traffic safety risk and traffic operational risk of road work zone on urban expressway were explored, and based on consistency analysis of operating speed and traffic performance analysis, the risk evaluation methods of road work zone on urban expressway were established. On the basis of application on risk evaluation of road work zone on Beijing expressway, the effectiveness of risk evaluation methods of road work zone was verified, and improving measures on reducing traffic safety risks and traffic operational risks were presented.  
  关键词: Risk evaluation, road working, urban expressway  
  下载:         下载 [6 ]  
  vol   1 (1)  :178
 
   105. A Study on the Method of Highway Hi-Pass Lane Arrangement
    作者姓名: Joon-Beom Lim, Soo-Beom Lee, Ji-Yeon Hong, and Sung-Kab Joo  
  摘要:   Hi-Pass was determined to be introduced at the meeting of the Ministry of Land, Transport and Maritime Affairs for improvement of highway functions in December 1997, and was first opened up in June 2005. Since the utility rate of Hi-Pass in 2011 was 50.7%, it has been increasing by nearly 10%, annually. With the increase in the use of Hi-Pass, however, there are growing safety problems that two out of six users in highway toll booths are dead in the highway lanes. At this point of time that vehicles using highways are continuously increasing, a criterion on Hi-Pass lane arrangement is required. Thus, this research suggested a four-stage highway lane arrangement method of mainline toll booths. Stage 1 reviews whether to install more Hi-Pass lanes, or to rearrange them. Stage 2 classifies the separation distance between toll plazas and ramp into four types, and Stage 3 decides the location of arrangement of Hi-Pass lane among the left, the center and the right, through a conflict analysis of each type. Lastly, Stage 4 builds a model and determines the ratio of lane arrangement which has the minimum number of conflicts. From the four-stage process, the Hi-Pass lane was designed to be arranged on the left, or on the left and the right for the four types, and a model to determine the ratio of Hi-Pass lane arrangement on the left and the right was developed, as follows. No. of conflicts = exp(0.1178X2-0.1438X3-0.0004X12+0.0004X14+0.0012X16+0.1679X20 Where, X2, X3, X12, X14, X16 and X 20 are respectively, the number of lane changes, mainline use lane, distance between toll plaza and entry ramp, the volume of traffic, the volume of exit traffic and the maximum number of lanes for the use of Hi-Pass.  
  关键词: hi-pass lane arrangement  
  下载:         下载 [6 ]  
  vol   1 (1)  :185
 
   106. A Study on the Method of Highway Hi-Pass Lane Arrangement
    作者姓名: Joon-Beom Lim, Soo-Beom Lee, Ji-Yeon Hong, and Sung-Kab Joo  
  摘要:   Hi-Pass was determined to be introduced at the meeting of the Ministry of Land, Transport and Maritime Affairs for improvement of highway functions in December 1997, and was first opened up in June 2005. Since the utility rate of Hi-Pass in 2011 was 50.7%, it has been increasing by nearly 10%, annually. With the increase in the use of Hi-Pass, however, there are growing safety problems that two out of six users in highway toll booths are dead in the highway lanes. At this point of time that vehicles using highways are continuously increasing, a criterion on Hi-Pass lane arrangement is required. Thus, this research suggested a four-stage highway lane arrangement method of mainline toll booths. Stage 1 reviews whether to install more Hi-Pass lanes, or to rearrange them. Stage 2 classifies the separation distance between toll plazas and ramp into four types, and Stage 3 decides the location of arrangement of Hi-Pass lane among the left, the center and the right, through a conflict analysis of each type. Lastly, Stage 4 builds a model and determines the ratio of lane arrangement which has the minimum number of conflicts. From the four-stage process, the Hi-Pass lane was designed to be arranged on the left, or on the left and the right for the four types, and a model to determine the ratio of Hi-Pass lane arrangement on the left and the right was developed, as follows. No. of conflicts = exp(0.1178X2-0.1438X3-0.0004X12+0.0004X14+0.0012X16+0.1679X20 Where, X2, X3, X12, X14, X16 and X 20 are respectively, the number of lane changes, mainline use lane, distance between toll plaza and entry ramp, the volume of traffic, the volume of exit traffic and the maximum number of lanes for the use of Hi-Pass.  
  关键词: hi-pass lane arrangement  
  下载:         下载 [6 ]  
  vol   1 (1)  :185
 
   107. A Study on the Method of Highway Hi-Pass Lane Arrangement
    作者姓名: Joon-Beom Lim, Soo-Beom Lee, Ji-Yeon Hong, and Sung-Kab Joo  
  摘要:   Hi-Pass was determined to be introduced at the meeting of the Ministry of Land, Transport and Maritime Affairs for improvement of highway functions in December 1997, and was first opened up in June 2005. Since the utility rate of Hi-Pass in 2011 was 50.7%, it has been increasing by nearly 10%, annually. With the increase in the use of Hi-Pass, however, there are growing safety problems that two out of six users in highway toll booths are dead in the highway lanes. At this point of time that vehicles using highways are continuously increasing, a criterion on Hi-Pass lane arrangement is required. Thus, this research suggested a four-stage highway lane arrangement method of mainline toll booths. Stage 1 reviews whether to install more Hi-Pass lanes, or to rearrange them. Stage 2 classifies the separation distance between toll plazas and ramp into four types, and Stage 3 decides the location of arrangement of Hi-Pass lane among the left, the center and the right, through a conflict analysis of each type. Lastly, Stage 4 builds a model and determines the ratio of lane arrangement which has the minimum number of conflicts. From the four-stage process, the Hi-Pass lane was designed to be arranged on the left, or on the left and the right for the four types, and a model to determine the ratio of Hi-Pass lane arrangement on the left and the right was developed, as follows. No. of conflicts = exp(0.1178X2-0.1438X3-0.0004X12+0.0004X14+0.0012X16+0.1679X20 Where, X2, X3, X12, X14, X16 and X 20 are respectively, the number of lane changes, mainline use lane, distance between toll plaza and entry ramp, the volume of traffic, the volume of exit traffic and the maximum number of lanes for the use of Hi-Pass.  
  关键词: hi-pass lane arrangement  
  下载:         下载 [6 ]  
  vol   1 (1)  :185
 
   108. A Study on the Method of Highway Hi-Pass Lane Arrangement
    作者姓名: Joon-Beom Lim, Soo-Beom Lee, Ji-Yeon Hong, and Sung-Kab Joo  
  摘要:   Hi-Pass was determined to be introduced at the meeting of the Ministry of Land, Transport and Maritime Affairs for improvement of highway functions in December 1997, and was first opened up in June 2005. Since the utility rate of Hi-Pass in 2011 was 50.7%, it has been increasing by nearly 10%, annually. With the increase in the use of Hi-Pass, however, there are growing safety problems that two out of six users in highway toll booths are dead in the highway lanes. At this point of time that vehicles using highways are continuously increasing, a criterion on Hi-Pass lane arrangement is required. Thus, this research suggested a four-stage highway lane arrangement method of mainline toll booths. Stage 1 reviews whether to install more Hi-Pass lanes, or to rearrange them. Stage 2 classifies the separation distance between toll plazas and ramp into four types, and Stage 3 decides the location of arrangement of Hi-Pass lane among the left, the center and the right, through a conflict analysis of each type. Lastly, Stage 4 builds a model and determines the ratio of lane arrangement which has the minimum number of conflicts. From the four-stage process, the Hi-Pass lane was designed to be arranged on the left, or on the left and the right for the four types, and a model to determine the ratio of Hi-Pass lane arrangement on the left and the right was developed, as follows. No. of conflicts = exp(0.1178X2-0.1438X3-0.0004X12+0.0004X14+0.0012X16+0.1679X20 Where, X2, X3, X12, X14, X16 and X 20 are respectively, the number of lane changes, mainline use lane, distance between toll plaza and entry ramp, the volume of traffic, the volume of exit traffic and the maximum number of lanes for the use of Hi-Pass.  
  关键词: hi-pass lane arrangement  
  下载:         下载 [6 ]  
  vol   1 (1)  :185
 
   109. Prediction of Settlement of Pile Groups
    作者姓名: Guo-liang Dai, Chao Yang, and Wei-ming Gong  
  摘要:   The interactions among closely located piles in a pile group are complex in super-long pile groups. Few data are available on the testing of full-scale bored pile groups in the field. To investigate the behavior of super-long bored pile groups, axial static load testing of in-situ and full-scale instrumented pile groups and single piles were performed. An alternative to modeling pile interaction and calculating individual pile response is to model the pile group as a single foundation unit, in what is referred to as the equivalent pier methods. Based on nonlinear pile-soil-pile interaction modeled by hyperbolic load-transfer functions and the group effect of reduction of stiffness and increase of head settlement, it was found that initial stiffness reduction coefficient β of 0.3 is suitable while value of g ranges from 0.15 - 0.4 for this field tested pile groups.  
  关键词: pile groups; settlement; equivalent pier method  
  下载:         下载 [6 ]  
  vol   1 (1)  :191
 
   110. Prediction of Settlement of Pile Groups
    作者姓名: Guo-liang Dai, Chao Yang, and Wei-ming Gong  
  摘要:   The interactions among closely located piles in a pile group are complex in super-long pile groups. Few data are available on the testing of full-scale bored pile groups in the field. To investigate the behavior of super-long bored pile groups, axial static load testing of in-situ and full-scale instrumented pile groups and single piles were performed. An alternative to modeling pile interaction and calculating individual pile response is to model the pile group as a single foundation unit, in what is referred to as the equivalent pier methods. Based on nonlinear pile-soil-pile interaction modeled by hyperbolic load-transfer functions and the group effect of reduction of stiffness and increase of head settlement, it was found that initial stiffness reduction coefficient β of 0.3 is suitable while value of g ranges from 0.15 - 0.4 for this field tested pile groups.  
  关键词: pile groups; settlement; equivalent pier method  
  下载:         下载 [6 ]  
  vol   1 (1)  :191
 
   111. Prediction of Settlement of Pile Groups
    作者姓名: Guo-liang Dai, Chao Yang, and Wei-ming Gong  
  摘要:   The interactions among closely located piles in a pile group are complex in super-long pile groups. Few data are available on the testing of full-scale bored pile groups in the field. To investigate the behavior of super-long bored pile groups, axial static load testing of in-situ and full-scale instrumented pile groups and single piles were performed. An alternative to modeling pile interaction and calculating individual pile response is to model the pile group as a single foundation unit, in what is referred to as the equivalent pier methods. Based on nonlinear pile-soil-pile interaction modeled by hyperbolic load-transfer functions and the group effect of reduction of stiffness and increase of head settlement, it was found that initial stiffness reduction coefficient β of 0.3 is suitable while value of g ranges from 0.15 - 0.4 for this field tested pile groups.  
  关键词: pile groups; settlement; equivalent pier method  
  下载:         下载 [6 ]  
  vol   1 (1)  :191
 
   112. Prediction of Settlement of Pile Groups
    作者姓名: Guo-liang Dai, Chao Yang, and Wei-ming Gong  
  摘要:   The interactions among closely located piles in a pile group are complex in super-long pile groups. Few data are available on the testing of full-scale bored pile groups in the field. To investigate the behavior of super-long bored pile groups, axial static load testing of in-situ and full-scale instrumented pile groups and single piles were performed. An alternative to modeling pile interaction and calculating individual pile response is to model the pile group as a single foundation unit, in what is referred to as the equivalent pier methods. Based on nonlinear pile-soil-pile interaction modeled by hyperbolic load-transfer functions and the group effect of reduction of stiffness and increase of head settlement, it was found that initial stiffness reduction coefficient β of 0.3 is suitable while value of g ranges from 0.15 - 0.4 for this field tested pile groups.  
  关键词: pile groups; settlement; equivalent pier method  
  下载:         下载 [6 ]  
  vol   1 (1)  :191
 
   113. A Real-Time Simulator for the Behavior of Large-Scale Crowd over City-Wide Maps using CUDA
    作者姓名: Bing Shi, Yuan Gao, Xianqiao Chen, and Sarvapali Ramchurn  
  摘要:   In this paper, a novel simulator is designed and implemented to run the simulation for large-scale crowd in real time in a city-wide map, which can provide useful insights for the relevant authorities in time. In detail, in this simulator, each individual in the large-scale crowd is denoted as an agent, and each agent’s behavior must obey the fundamental physical principles. Since the behavior of each agent in the large-scale crowd should be computed, it requires huge computing resource. This simulator utilizes CUDA (a GPUs parallel architecture) to improve the performance. In doing so, the simulation with thousands of agents over a city-wide map can be run in real time by using a single pc or laptop equipped with NVIDIA graphics card. Based on the designed simulator, we run simulations to show how to draw useful insights from the simulation.  
  关键词: Simulator, Agent, Large-Scale Crowd, CUDA, Real Time  
  下载:         下载 [6 ]  
  vol   1 (1)  :199
 
   114. A Real-Time Simulator for the Behavior of Large-Scale Crowd over City-Wide Maps using CUDA
    作者姓名: Bing Shi, Yuan Gao, Xianqiao Chen, and Sarvapali Ramchurn  
  摘要:   In this paper, a novel simulator is designed and implemented to run the simulation for large-scale crowd in real time in a city-wide map, which can provide useful insights for the relevant authorities in time. In detail, in this simulator, each individual in the large-scale crowd is denoted as an agent, and each agent’s behavior must obey the fundamental physical principles. Since the behavior of each agent in the large-scale crowd should be computed, it requires huge computing resource. This simulator utilizes CUDA (a GPUs parallel architecture) to improve the performance. In doing so, the simulation with thousands of agents over a city-wide map can be run in real time by using a single pc or laptop equipped with NVIDIA graphics card. Based on the designed simulator, we run simulations to show how to draw useful insights from the simulation.  
  关键词: Simulator, Agent, Large-Scale Crowd, CUDA, Real Time  
  下载:         下载 [6 ]  
  vol   1 (1)  :199
 
   115. A Real-Time Simulator for the Behavior of Large-Scale Crowd over City-Wide Maps using CUDA
    作者姓名: Bing Shi, Yuan Gao, Xianqiao Chen, and Sarvapali Ramchurn  
  摘要:   In this paper, a novel simulator is designed and implemented to run the simulation for large-scale crowd in real time in a city-wide map, which can provide useful insights for the relevant authorities in time. In detail, in this simulator, each individual in the large-scale crowd is denoted as an agent, and each agent’s behavior must obey the fundamental physical principles. Since the behavior of each agent in the large-scale crowd should be computed, it requires huge computing resource. This simulator utilizes CUDA (a GPUs parallel architecture) to improve the performance. In doing so, the simulation with thousands of agents over a city-wide map can be run in real time by using a single pc or laptop equipped with NVIDIA graphics card. Based on the designed simulator, we run simulations to show how to draw useful insights from the simulation.  
  关键词: Simulator, Agent, Large-Scale Crowd, CUDA, Real Time  
  下载:         下载 [6 ]  
  vol   1 (1)  :199
 
   116. A Real-Time Simulator for the Behavior of Large-Scale Crowd over City-Wide Maps using CUDA
    作者姓名: Bing Shi, Yuan Gao, Xianqiao Chen, and Sarvapali Ramchurn  
  摘要:   In this paper, a novel simulator is designed and implemented to run the simulation for large-scale crowd in real time in a city-wide map, which can provide useful insights for the relevant authorities in time. In detail, in this simulator, each individual in the large-scale crowd is denoted as an agent, and each agent’s behavior must obey the fundamental physical principles. Since the behavior of each agent in the large-scale crowd should be computed, it requires huge computing resource. This simulator utilizes CUDA (a GPUs parallel architecture) to improve the performance. In doing so, the simulation with thousands of agents over a city-wide map can be run in real time by using a single pc or laptop equipped with NVIDIA graphics card. Based on the designed simulator, we run simulations to show how to draw useful insights from the simulation.  
  关键词: Simulator, Agent, Large-Scale Crowd, CUDA, Real Time  
  下载:         下载 [6 ]  
  vol   1 (1)  :199
 
   117. Analysis of Conflicts between Right-Turn Vehicles and Pedestrians under Different Right-Turn Control Schemes: A Comparative Study
    作者姓名: Ziwen Ling, Ying Ni, and Keping Li  
  摘要:   Great amounts of accidents have taken place at intersections, where conflicts between right-turn vehicles and pedestrians take the highest proportion. Right turn on red ( RTOR) control scheme are widely used in China. Recently, protected/ permissive right-turn phasing (PPRT) control scheme has been adopted in some cities. However, little research has focused on the effects of reducing conflict numbers or decreasing conflict severity under PPRT. This paper presents a comparative study of the behavior and conflict characterizes of right-turn vehicles and pedestrians under different right-turn control schemes. Empirical data has been collected at two typical intersections with similar layout characteristics and traffic patterns, one with control scheme of RTOR, and the other PPRT. The conflict samples are classified into ten types, according to the directions of pedestrians’ movement and whether pedestrians cross individually or in a group. Time-lags and gaps of right-turn vehicles and pedestrians are extracted. The analysis results show that: Time-lags and gaps significantly correlate to the yielding behavior of right-turn vehicles. Furthermore, the time-lags and gaps with RTOR are smaller than those with PPRT, which indicates that the conflicts with RTOR are more serious than those with PPRT. Meanwhile, right-turn vehicles are more likely to yield to pedestrians at PPRT intersections.  
  关键词: Right-turn vehicle, Pedestrian, Right-turn control scheme, Conflict, Driver behavior  
  下载:         下载 [6 ]  
  vol   1 (1)  :206
 
   118. Analysis of Conflicts between Right-Turn Vehicles and Pedestrians under Different Right-Turn Control Schemes: A Comparative Study
    作者姓名: Ziwen Ling, Ying Ni, and Keping Li  
  摘要:   Great amounts of accidents have taken place at intersections, where conflicts between right-turn vehicles and pedestrians take the highest proportion. Right turn on red ( RTOR) control scheme are widely used in China. Recently, protected/ permissive right-turn phasing (PPRT) control scheme has been adopted in some cities. However, little research has focused on the effects of reducing conflict numbers or decreasing conflict severity under PPRT. This paper presents a comparative study of the behavior and conflict characterizes of right-turn vehicles and pedestrians under different right-turn control schemes. Empirical data has been collected at two typical intersections with similar layout characteristics and traffic patterns, one with control scheme of RTOR, and the other PPRT. The conflict samples are classified into ten types, according to the directions of pedestrians’ movement and whether pedestrians cross individually or in a group. Time-lags and gaps of right-turn vehicles and pedestrians are extracted. The analysis results show that: Time-lags and gaps significantly correlate to the yielding behavior of right-turn vehicles. Furthermore, the time-lags and gaps with RTOR are smaller than those with PPRT, which indicates that the conflicts with RTOR are more serious than those with PPRT. Meanwhile, right-turn vehicles are more likely to yield to pedestrians at PPRT intersections.  
  关键词: Right-turn vehicle, Pedestrian, Right-turn control scheme, Conflict, Driver behavior  
  下载:         下载 [6 ]  
  vol   1 (1)  :206
 
   119. Analysis of Conflicts between Right-Turn Vehicles and Pedestrians under Different Right-Turn Control Schemes: A Comparative Study
    作者姓名: Ziwen Ling, Ying Ni, and Keping Li  
  摘要:   Great amounts of accidents have taken place at intersections, where conflicts between right-turn vehicles and pedestrians take the highest proportion. Right turn on red ( RTOR) control scheme are widely used in China. Recently, protected/ permissive right-turn phasing (PPRT) control scheme has been adopted in some cities. However, little research has focused on the effects of reducing conflict numbers or decreasing conflict severity under PPRT. This paper presents a comparative study of the behavior and conflict characterizes of right-turn vehicles and pedestrians under different right-turn control schemes. Empirical data has been collected at two typical intersections with similar layout characteristics and traffic patterns, one with control scheme of RTOR, and the other PPRT. The conflict samples are classified into ten types, according to the directions of pedestrians’ movement and whether pedestrians cross individually or in a group. Time-lags and gaps of right-turn vehicles and pedestrians are extracted. The analysis results show that: Time-lags and gaps significantly correlate to the yielding behavior of right-turn vehicles. Furthermore, the time-lags and gaps with RTOR are smaller than those with PPRT, which indicates that the conflicts with RTOR are more serious than those with PPRT. Meanwhile, right-turn vehicles are more likely to yield to pedestrians at PPRT intersections.  
  关键词: Right-turn vehicle, Pedestrian, Right-turn control scheme, Conflict, Driver behavior  
  下载:         下载 [6 ]  
  vol   1 (1)  :206
 
   120. Analysis of Conflicts between Right-Turn Vehicles and Pedestrians under Different Right-Turn Control Schemes: A Comparative Study
    作者姓名: Ziwen Ling, Ying Ni, and Keping Li  
  摘要:   Great amounts of accidents have taken place at intersections, where conflicts between right-turn vehicles and pedestrians take the highest proportion. Right turn on red ( RTOR) control scheme are widely used in China. Recently, protected/ permissive right-turn phasing (PPRT) control scheme has been adopted in some cities. However, little research has focused on the effects of reducing conflict numbers or decreasing conflict severity under PPRT. This paper presents a comparative study of the behavior and conflict characterizes of right-turn vehicles and pedestrians under different right-turn control schemes. Empirical data has been collected at two typical intersections with similar layout characteristics and traffic patterns, one with control scheme of RTOR, and the other PPRT. The conflict samples are classified into ten types, according to the directions of pedestrians’ movement and whether pedestrians cross individually or in a group. Time-lags and gaps of right-turn vehicles and pedestrians are extracted. The analysis results show that: Time-lags and gaps significantly correlate to the yielding behavior of right-turn vehicles. Furthermore, the time-lags and gaps with RTOR are smaller than those with PPRT, which indicates that the conflicts with RTOR are more serious than those with PPRT. Meanwhile, right-turn vehicles are more likely to yield to pedestrians at PPRT intersections.  
  关键词: Right-turn vehicle, Pedestrian, Right-turn control scheme, Conflict, Driver behavior  
  下载:         下载 [6 ]  
  vol   1 (1)  :206
 
   121. Study of Double W-Beam Barrier Simulation Crash Performance
    作者姓名: Chenghu Wang, Hui Chen, Chao Jiang, and Zhiwei Zhou  
  摘要:   JTJ074-94 was published in 1994 and revised in 2006. The biggest difference between before and after is the requirement of crash performance. In JTJ074-94, the anti-collision grade is B, the anti-collision energy is 70kJ. In JTG/T D81-2006, the anti-collision grade is A, the anti-collision energy is 160kJ. Because of the upgrade of the requirement of crash performance, the important question is to improve the protection capability of the guardrail in highway reorganization and expansion. However, the double w-beam barrier is the most domestic and applicable in many transformation methods. But the crash performance has not been proved. The protection ability of double corrugated beam barrier is verified by simulation experiment. This simulation experiments also lay a foundation for the real vehicle crash test.  
  关键词: Simulation experiment.; Reconstruction; double W-beam  
  下载:         下载 [6 ]  
  vol   1 (1)  :215
 
   122. Study of Double W-Beam Barrier Simulation Crash Performance
    作者姓名: Chenghu Wang, Hui Chen, Chao Jiang, and Zhiwei Zhou  
  摘要:   JTJ074-94 was published in 1994 and revised in 2006. The biggest difference between before and after is the requirement of crash performance. In JTJ074-94, the anti-collision grade is B, the anti-collision energy is 70kJ. In JTG/T D81-2006, the anti-collision grade is A, the anti-collision energy is 160kJ. Because of the upgrade of the requirement of crash performance, the important question is to improve the protection capability of the guardrail in highway reorganization and expansion. However, the double w-beam barrier is the most domestic and applicable in many transformation methods. But the crash performance has not been proved. The protection ability of double corrugated beam barrier is verified by simulation experiment. This simulation experiments also lay a foundation for the real vehicle crash test.  
  关键词: Simulation experiment.; Reconstruction; double W-beam  
  下载:         下载 [6 ]  
  vol   1 (1)  :215
 
   123. Study of Double W-Beam Barrier Simulation Crash Performance
    作者姓名: Chenghu Wang, Hui Chen, Chao Jiang, and Zhiwei Zhou  
  摘要:   JTJ074-94 was published in 1994 and revised in 2006. The biggest difference between before and after is the requirement of crash performance. In JTJ074-94, the anti-collision grade is B, the anti-collision energy is 70kJ. In JTG/T D81-2006, the anti-collision grade is A, the anti-collision energy is 160kJ. Because of the upgrade of the requirement of crash performance, the important question is to improve the protection capability of the guardrail in highway reorganization and expansion. However, the double w-beam barrier is the most domestic and applicable in many transformation methods. But the crash performance has not been proved. The protection ability of double corrugated beam barrier is verified by simulation experiment. This simulation experiments also lay a foundation for the real vehicle crash test.  
  关键词: Simulation experiment.; Reconstruction; double W-beam  
  下载:         下载 [6 ]  
  vol   1 (1)  :215
 
   124. Study of Double W-Beam Barrier Simulation Crash Performance
    作者姓名: Chenghu Wang, Hui Chen, Chao Jiang, and Zhiwei Zhou  
  摘要:   JTJ074-94 was published in 1994 and revised in 2006. The biggest difference between before and after is the requirement of crash performance. In JTJ074-94, the anti-collision grade is B, the anti-collision energy is 70kJ. In JTG/T D81-2006, the anti-collision grade is A, the anti-collision energy is 160kJ. Because of the upgrade of the requirement of crash performance, the important question is to improve the protection capability of the guardrail in highway reorganization and expansion. However, the double w-beam barrier is the most domestic and applicable in many transformation methods. But the crash performance has not been proved. The protection ability of double corrugated beam barrier is verified by simulation experiment. This simulation experiments also lay a foundation for the real vehicle crash test.  
  关键词: Simulation experiment.; Reconstruction; double W-beam  
  下载:         下载 [6 ]  
  vol   1 (1)  :215
 
   125. Establishment of Navigation Environment Safety Index of Changjiang River Based on Bayesian Network with GeNIe
    作者姓名: Hao Li, Qizhi Hu, and Qingnian Zhang  
  摘要:   As the shipping environment is the foundation of shipping, it is also the key influence factor in the shipping safety. This paper take Changjiang River as an example, through the statistics of its historical shipping accident and dangerous case data, explore the contribution of navigation environment elements to the accident. Then based on Bayesian network, take the navigation environment elements as the nodes of the Bayesian network combined with the prediction of shipping environment safety status trend through the seasonal, regularity and other characteristics of the elements. Finally, establish a shipping environment safety index system which can reflect the general shipping environment safety state trend and measure various kinds of shipping environment factors’ controbution to the shipping accident. The safety index can dynamically represent the shipping environment safety state trend with the exponential form as its continuity. The release and forecast of the shipping environment safety index is beneficial for the enterprises, government departments and industry authority related to shipping to take charge of the shipping environment safety state and trend, and it also has an important practical significance to improve the Changjiang River shipping safety management level.  
  关键词: shipping environment, safety index, Changjiang River, Bayesian network  
  下载:         下载 [6 ]  
  vol   1 (1)  :223
 
   126. Establishment of Navigation Environment Safety Index of Changjiang River Based on Bayesian Network with GeNIe
    作者姓名: Hao Li, Qizhi Hu, and Qingnian Zhang  
  摘要:   As the shipping environment is the foundation of shipping, it is also the key influence factor in the shipping safety. This paper take Changjiang River as an example, through the statistics of its historical shipping accident and dangerous case data, explore the contribution of navigation environment elements to the accident. Then based on Bayesian network, take the navigation environment elements as the nodes of the Bayesian network combined with the prediction of shipping environment safety status trend through the seasonal, regularity and other characteristics of the elements. Finally, establish a shipping environment safety index system which can reflect the general shipping environment safety state trend and measure various kinds of shipping environment factors’ controbution to the shipping accident. The safety index can dynamically represent the shipping environment safety state trend with the exponential form as its continuity. The release and forecast of the shipping environment safety index is beneficial for the enterprises, government departments and industry authority related to shipping to take charge of the shipping environment safety state and trend, and it also has an important practical significance to improve the Changjiang River shipping safety management level.  
  关键词: shipping environment, safety index, Changjiang River, Bayesian network  
  下载:         下载 [6 ]  
  vol   1 (1)  :223
 
   127. Establishment of Navigation Environment Safety Index of Changjiang River Based on Bayesian Network with GeNIe
    作者姓名: Hao Li, Qizhi Hu, and Qingnian Zhang  
  摘要:   As the shipping environment is the foundation of shipping, it is also the key influence factor in the shipping safety. This paper take Changjiang River as an example, through the statistics of its historical shipping accident and dangerous case data, explore the contribution of navigation environment elements to the accident. Then based on Bayesian network, take the navigation environment elements as the nodes of the Bayesian network combined with the prediction of shipping environment safety status trend through the seasonal, regularity and other characteristics of the elements. Finally, establish a shipping environment safety index system which can reflect the general shipping environment safety state trend and measure various kinds of shipping environment factors’ controbution to the shipping accident. The safety index can dynamically represent the shipping environment safety state trend with the exponential form as its continuity. The release and forecast of the shipping environment safety index is beneficial for the enterprises, government departments and industry authority related to shipping to take charge of the shipping environment safety state and trend, and it also has an important practical significance to improve the Changjiang River shipping safety management level.  
  关键词: shipping environment, safety index, Changjiang River, Bayesian network  
  下载:         下载 [6 ]  
  vol   1 (1)  :223
 
   128. Establishment of Navigation Environment Safety Index of Changjiang River Based on Bayesian Network with GeNIe
    作者姓名: Hao Li, Qizhi Hu, and Qingnian Zhang  
  摘要:   As the shipping environment is the foundation of shipping, it is also the key influence factor in the shipping safety. This paper take Changjiang River as an example, through the statistics of its historical shipping accident and dangerous case data, explore the contribution of navigation environment elements to the accident. Then based on Bayesian network, take the navigation environment elements as the nodes of the Bayesian network combined with the prediction of shipping environment safety status trend through the seasonal, regularity and other characteristics of the elements. Finally, establish a shipping environment safety index system which can reflect the general shipping environment safety state trend and measure various kinds of shipping environment factors’ controbution to the shipping accident. The safety index can dynamically represent the shipping environment safety state trend with the exponential form as its continuity. The release and forecast of the shipping environment safety index is beneficial for the enterprises, government departments and industry authority related to shipping to take charge of the shipping environment safety state and trend, and it also has an important practical significance to improve the Changjiang River shipping safety management level.  
  关键词: shipping environment, safety index, Changjiang River, Bayesian network  
  下载:         下载 [6 ]  
  vol   1 (1)  :223
 
   129. A Study on Security Monitoring and Dynamic Assessment of Highway Based on Remote Sensing
    作者姓名: Jianfeng Liu, Ying Cai, Yu Ge, and Jianling Huang  
  摘要:   A new disaster survey method along the highway was explored by combining multiple high resolution remote sensing data, geological materials and other basic data. By analyzing the geologic environment and its history disasters along the highway, remote sensing monitoring index, assessment methods, mathematical models are constructed and studied to evaluate the dynamic risk of geological disaster on highway disaster prevention, road planning and highway security guarantee.  
  关键词: remote sensing, highway security, dynamic assessment  
  下载:         下载 [6 ]  
  vol   1 (1)  :231
 
   130. A Study on Security Monitoring and Dynamic Assessment of Highway Based on Remote Sensing
    作者姓名: Jianfeng Liu, Ying Cai, Yu Ge, and Jianling Huang  
  摘要:   A new disaster survey method along the highway was explored by combining multiple high resolution remote sensing data, geological materials and other basic data. By analyzing the geologic environment and its history disasters along the highway, remote sensing monitoring index, assessment methods, mathematical models are constructed and studied to evaluate the dynamic risk of geological disaster on highway disaster prevention, road planning and highway security guarantee.  
  关键词: remote sensing, highway security, dynamic assessment  
  下载:         下载 [6 ]  
  vol   1 (1)  :231
 
   131. A Study on Security Monitoring and Dynamic Assessment of Highway Based on Remote Sensing
    作者姓名: Jianfeng Liu, Ying Cai, Yu Ge, and Jianling Huang  
  摘要:   A new disaster survey method along the highway was explored by combining multiple high resolution remote sensing data, geological materials and other basic data. By analyzing the geologic environment and its history disasters along the highway, remote sensing monitoring index, assessment methods, mathematical models are constructed and studied to evaluate the dynamic risk of geological disaster on highway disaster prevention, road planning and highway security guarantee.  
  关键词: remote sensing, highway security, dynamic assessment  
  下载:         下载 [6 ]  
  vol   1 (1)  :231
 
   132. A Study on Security Monitoring and Dynamic Assessment of Highway Based on Remote Sensing
    作者姓名: Jianfeng Liu, Ying Cai, Yu Ge, and Jianling Huang  
  摘要:   A new disaster survey method along the highway was explored by combining multiple high resolution remote sensing data, geological materials and other basic data. By analyzing the geologic environment and its history disasters along the highway, remote sensing monitoring index, assessment methods, mathematical models are constructed and studied to evaluate the dynamic risk of geological disaster on highway disaster prevention, road planning and highway security guarantee.  
  关键词: remote sensing, highway security, dynamic assessment  
  下载:         下载 [6 ]  
  vol   1 (1)  :231
 
   133. Application of Multi-source Information Fusion Technology in the Construction of a Secure and Emergent Transportation Platform
    作者姓名: Liu Jianfeng, Wang Haifeng, Ge Yu, and Huang Jianling  
  摘要:   Based on the domestic and international secure and emergent transportation platform status quo, the paper analyzes its bottleneck problems such as the low rate utilization on basic resource, the incompletion of traffic monitoring information, the imperfectness of early-warning mechanism and the inconsistence of emergency response. By taking advantage of the new technology of Multi-source information fusion technology, the cloud computing, the Internet of things(IOT), Mobile Internet, the paper proposes the solution for the secure and emergent transportation platform from the early-warning of monitoring,the integration of a variety of information to the cooperation of emergency response among multi sectors. The paper further discusses the construction thoughts and the potential application for the future transport emergency platform.  
  关键词: Safety Emergency  
  下载:         下载 [6 ]  
  vol   1 (1)  :237
 
   134. Application of Multi-source Information Fusion Technology in the Construction of a Secure and Emergent Transportation Platform
    作者姓名: Liu Jianfeng, Wang Haifeng, Ge Yu, and Huang Jianling  
  摘要:   Based on the domestic and international secure and emergent transportation platform status quo, the paper analyzes its bottleneck problems such as the low rate utilization on basic resource, the incompletion of traffic monitoring information, the imperfectness of early-warning mechanism and the inconsistence of emergency response. By taking advantage of the new technology of Multi-source information fusion technology, the cloud computing, the Internet of things(IOT), Mobile Internet, the paper proposes the solution for the secure and emergent transportation platform from the early-warning of monitoring,the integration of a variety of information to the cooperation of emergency response among multi sectors. The paper further discusses the construction thoughts and the potential application for the future transport emergency platform.  
  关键词: Safety Emergency  
  下载:         下载 [6 ]  
  vol   1 (1)  :237
 
   135. Application of Multi-source Information Fusion Technology in the Construction of a Secure and Emergent Transportation Platform
    作者姓名: Liu Jianfeng, Wang Haifeng, Ge Yu, and Huang Jianling  
  摘要:   Based on the domestic and international secure and emergent transportation platform status quo, the paper analyzes its bottleneck problems such as the low rate utilization on basic resource, the incompletion of traffic monitoring information, the imperfectness of early-warning mechanism and the inconsistence of emergency response. By taking advantage of the new technology of Multi-source information fusion technology, the cloud computing, the Internet of things(IOT), Mobile Internet, the paper proposes the solution for the secure and emergent transportation platform from the early-warning of monitoring,the integration of a variety of information to the cooperation of emergency response among multi sectors. The paper further discusses the construction thoughts and the potential application for the future transport emergency platform.  
  关键词: Safety Emergency  
  下载:         下载 [6 ]  
  vol   1 (1)  :237
 
   136. Application of Multi-source Information Fusion Technology in the Construction of a Secure and Emergent Transportation Platform
    作者姓名: Liu Jianfeng, Wang Haifeng, Ge Yu, and Huang Jianling  
  摘要:   Based on the domestic and international secure and emergent transportation platform status quo, the paper analyzes its bottleneck problems such as the low rate utilization on basic resource, the incompletion of traffic monitoring information, the imperfectness of early-warning mechanism and the inconsistence of emergency response. By taking advantage of the new technology of Multi-source information fusion technology, the cloud computing, the Internet of things(IOT), Mobile Internet, the paper proposes the solution for the secure and emergent transportation platform from the early-warning of monitoring,the integration of a variety of information to the cooperation of emergency response among multi sectors. The paper further discusses the construction thoughts and the potential application for the future transport emergency platform.  
  关键词: Safety Emergency  
  下载:         下载 [6 ]  
  vol   1 (1)  :237
 
   137. Method of Traffic Safety Evaluation of Newly Designed Highway Based on Driving Simulation
    作者姓名: Quan Min, Ying Zhou, Nengchao Lyu, and Meng Wu  
  摘要:   Implementing traffic safety evaluation is an efficient way to improve road safety, especially for newly designed roadway. In this paper, a new method of road safety evaluation based on the vehicle driving simulator was studied. In this study, a large number of experiments are implemented. Combined with the data of vehicle speed and vehicle lateral offset collected from the driving simulator during the process of simulation, Drivers’ psychological and physiologic data are collected and analyzed. Unsafe road section and the main factors were studied from the statistical data. The data analysis results indicated that typical date can express traffic safety risk. The research result could advise the alignment design and ancillary equipment design for newly designed road and improve traffic safety in advance.  
  关键词: Driving simulation; Road safety evaluation; Speed difference; Lateral offset  
  下载:         下载 [6 ]  
  vol   1 (1)  :244
 
   138. Method of Traffic Safety Evaluation of Newly Designed Highway Based on Driving Simulation
    作者姓名: Quan Min, Ying Zhou, Nengchao Lyu, and Meng Wu  
  摘要:   Implementing traffic safety evaluation is an efficient way to improve road safety, especially for newly designed roadway. In this paper, a new method of road safety evaluation based on the vehicle driving simulator was studied. In this study, a large number of experiments are implemented. Combined with the data of vehicle speed and vehicle lateral offset collected from the driving simulator during the process of simulation, Drivers’ psychological and physiologic data are collected and analyzed. Unsafe road section and the main factors were studied from the statistical data. The data analysis results indicated that typical date can express traffic safety risk. The research result could advise the alignment design and ancillary equipment design for newly designed road and improve traffic safety in advance.  
  关键词: Driving simulation; Road safety evaluation; Speed difference; Lateral offset  
  下载:         下载 [6 ]  
  vol   1 (1)  :244
 
   139. Method of Traffic Safety Evaluation of Newly Designed Highway Based on Driving Simulation
    作者姓名: Quan Min, Ying Zhou, Nengchao Lyu, and Meng Wu  
  摘要:   Implementing traffic safety evaluation is an efficient way to improve road safety, especially for newly designed roadway. In this paper, a new method of road safety evaluation based on the vehicle driving simulator was studied. In this study, a large number of experiments are implemented. Combined with the data of vehicle speed and vehicle lateral offset collected from the driving simulator during the process of simulation, Drivers’ psychological and physiologic data are collected and analyzed. Unsafe road section and the main factors were studied from the statistical data. The data analysis results indicated that typical date can express traffic safety risk. The research result could advise the alignment design and ancillary equipment design for newly designed road and improve traffic safety in advance.  
  关键词: Driving simulation; Road safety evaluation; Speed difference; Lateral offset  
  下载:         下载 [6 ]  
  vol   1 (1)  :244
 
   140. Method of Traffic Safety Evaluation of Newly Designed Highway Based on Driving Simulation
    作者姓名: Quan Min, Ying Zhou, Nengchao Lyu, and Meng Wu  
  摘要:   Implementing traffic safety evaluation is an efficient way to improve road safety, especially for newly designed roadway. In this paper, a new method of road safety evaluation based on the vehicle driving simulator was studied. In this study, a large number of experiments are implemented. Combined with the data of vehicle speed and vehicle lateral offset collected from the driving simulator during the process of simulation, Drivers’ psychological and physiologic data are collected and analyzed. Unsafe road section and the main factors were studied from the statistical data. The data analysis results indicated that typical date can express traffic safety risk. The research result could advise the alignment design and ancillary equipment design for newly designed road and improve traffic safety in advance.  
  关键词: Driving simulation; Road safety evaluation; Speed difference; Lateral offset  
  下载:         下载 [6 ]  
  vol   1 (1)  :244
 
   141. Lane Departure Warning System Design for Mountainous Freeways
    作者姓名: Ting Xu, Zhuanglin Ma, and Da-wei Hu  
  摘要:   Paper first explores reasons and risks of run-off-road crashes, then introduced a lane departure warning system (LDWS) in the hope of reducing frequency of such crashes substantially. Deviations were divided into three levels. In this research, Badaling freeway was selected as the study roadway section. According to historical safety records, traffic crashes occurred frequently on this freeway heading to Beijing direction, which was located in mountain areas. Paper picked out segments between 51.5 km and 55.6km to collecit pertinent information of drivers’ lane departures by digit video for a week. Lane departures data were detracted by digit video from 10:00 am to 16:00 pm for one week. Observed departure values were divided into several groups and aggregated into four categories to orient different levels of vehicles leaving behaviors. Result lays a solid foundation for further development of lane departure warning system (LDWS) for mountainous freeways in China.Paper first explores reasons and risks of run-off-road crashes, then introduced a lane departure warning system (LDWS) in the hope of reducing frequency of such crashes substantially. Deviations were divided into three levels. In this research, Badaling freeway was selected as the study roadway section. According to historical safety records, traffic crashes occurred frequently on this freeway heading to Beijing direction, which was located in mountain areas. Paper picked out segments between 51.5 km and 55.6km to collecit pertinent information of drivers’ lane departures by digit video for a week. Lane departures data were detracted by digit video from 10:00 am to 16:00 pm for one week. Observed departure values were divided into several groups and aggregated into four categories to orient different levels of vehicles leaving behaviors. Result lays a solid foundation for further development of lane departure warning system (LDWS) for mountainous freeways in China.  
  关键词: freeways, run-off-road crashes, lane departure, Cluster tree, threshold of  
  下载:         下载 [6 ]  
  vol   1 (1)  :252
 
   142. Lane Departure Warning System Design for Mountainous Freeways
    作者姓名: Ting Xu, Zhuanglin Ma, and Da-wei Hu  
  摘要:   Paper first explores reasons and risks of run-off-road crashes, then introduced a lane departure warning system (LDWS) in the hope of reducing frequency of such crashes substantially. Deviations were divided into three levels. In this research, Badaling freeway was selected as the study roadway section. According to historical safety records, traffic crashes occurred frequently on this freeway heading to Beijing direction, which was located in mountain areas. Paper picked out segments between 51.5 km and 55.6km to collecit pertinent information of drivers’ lane departures by digit video for a week. Lane departures data were detracted by digit video from 10:00 am to 16:00 pm for one week. Observed departure values were divided into several groups and aggregated into four categories to orient different levels of vehicles leaving behaviors. Result lays a solid foundation for further development of lane departure warning system (LDWS) for mountainous freeways in China.Paper first explores reasons and risks of run-off-road crashes, then introduced a lane departure warning system (LDWS) in the hope of reducing frequency of such crashes substantially. Deviations were divided into three levels. In this research, Badaling freeway was selected as the study roadway section. According to historical safety records, traffic crashes occurred frequently on this freeway heading to Beijing direction, which was located in mountain areas. Paper picked out segments between 51.5 km and 55.6km to collecit pertinent information of drivers’ lane departures by digit video for a week. Lane departures data were detracted by digit video from 10:00 am to 16:00 pm for one week. Observed departure values were divided into several groups and aggregated into four categories to orient different levels of vehicles leaving behaviors. Result lays a solid foundation for further development of lane departure warning system (LDWS) for mountainous freeways in China.  
  关键词: freeways, run-off-road crashes, lane departure, Cluster tree, threshold of  
  下载:         下载 [6 ]  
  vol   1 (1)  :252
 
   143. Lane Departure Warning System Design for Mountainous Freeways
    作者姓名: Ting Xu, Zhuanglin Ma, and Da-wei Hu  
  摘要:   Paper first explores reasons and risks of run-off-road crashes, then introduced a lane departure warning system (LDWS) in the hope of reducing frequency of such crashes substantially. Deviations were divided into three levels. In this research, Badaling freeway was selected as the study roadway section. According to historical safety records, traffic crashes occurred frequently on this freeway heading to Beijing direction, which was located in mountain areas. Paper picked out segments between 51.5 km and 55.6km to collecit pertinent information of drivers’ lane departures by digit video for a week. Lane departures data were detracted by digit video from 10:00 am to 16:00 pm for one week. Observed departure values were divided into several groups and aggregated into four categories to orient different levels of vehicles leaving behaviors. Result lays a solid foundation for further development of lane departure warning system (LDWS) for mountainous freeways in China.Paper first explores reasons and risks of run-off-road crashes, then introduced a lane departure warning system (LDWS) in the hope of reducing frequency of such crashes substantially. Deviations were divided into three levels. In this research, Badaling freeway was selected as the study roadway section. According to historical safety records, traffic crashes occurred frequently on this freeway heading to Beijing direction, which was located in mountain areas. Paper picked out segments between 51.5 km and 55.6km to collecit pertinent information of drivers’ lane departures by digit video for a week. Lane departures data were detracted by digit video from 10:00 am to 16:00 pm for one week. Observed departure values were divided into several groups and aggregated into four categories to orient different levels of vehicles leaving behaviors. Result lays a solid foundation for further development of lane departure warning system (LDWS) for mountainous freeways in China.  
  关键词: freeways, run-off-road crashes, lane departure, Cluster tree, threshold of  
  下载:         下载 [6 ]  
  vol   1 (1)  :252
 
   144. Lane Departure Warning System Design for Mountainous Freeways
    作者姓名: Ting Xu, Zhuanglin Ma, and Da-wei Hu  
  摘要:   Paper first explores reasons and risks of run-off-road crashes, then introduced a lane departure warning system (LDWS) in the hope of reducing frequency of such crashes substantially. Deviations were divided into three levels. In this research, Badaling freeway was selected as the study roadway section. According to historical safety records, traffic crashes occurred frequently on this freeway heading to Beijing direction, which was located in mountain areas. Paper picked out segments between 51.5 km and 55.6km to collecit pertinent information of drivers’ lane departures by digit video for a week. Lane departures data were detracted by digit video from 10:00 am to 16:00 pm for one week. Observed departure values were divided into several groups and aggregated into four categories to orient different levels of vehicles leaving behaviors. Result lays a solid foundation for further development of lane departure warning system (LDWS) for mountainous freeways in China.Paper first explores reasons and risks of run-off-road crashes, then introduced a lane departure warning system (LDWS) in the hope of reducing frequency of such crashes substantially. Deviations were divided into three levels. In this research, Badaling freeway was selected as the study roadway section. According to historical safety records, traffic crashes occurred frequently on this freeway heading to Beijing direction, which was located in mountain areas. Paper picked out segments between 51.5 km and 55.6km to collecit pertinent information of drivers’ lane departures by digit video for a week. Lane departures data were detracted by digit video from 10:00 am to 16:00 pm for one week. Observed departure values were divided into several groups and aggregated into four categories to orient different levels of vehicles leaving behaviors. Result lays a solid foundation for further development of lane departure warning system (LDWS) for mountainous freeways in China.  
  关键词: freeways, run-off-road crashes, lane departure, Cluster tree, threshold of  
  下载:         下载 [6 ]  
  vol   1 (1)  :252
 
   145. Development and Application of Container Automated Guided Vehicle System
    作者姓名: Haibo Li, Yunfei Zou, and Guangyu Li  
  摘要:   This paper introduces the development process of Automated Guided Vehicle System, which is China's independently developed intelligent container transport vehicle system. The system consists of positioning and navigation systems, wireless communication systems, automated guided vehicle systems and intelligent control systems. In the development process, such key technologies have been tackled as automated guided vehicle system integrated technology, automated guided vehicle path planning and tracking technology, positioning navigation and precise positioning technology, intelligent operation decision-making system. Currently, the system has been put into trial operation; the main technical parameters have reached the international advanced level. The paper ends with the applied prospects of the system in China’s container terminal.  
  关键词: AGV, Intelligent Vehicle, Container terminal  
  下载:         下载 [6 ]  
  vol   1 (1)  :258
 
   146. Development and Application of Container Automated Guided Vehicle System
    作者姓名: Haibo Li, Yunfei Zou, and Guangyu Li  
  摘要:   This paper introduces the development process of Automated Guided Vehicle System, which is China's independently developed intelligent container transport vehicle system. The system consists of positioning and navigation systems, wireless communication systems, automated guided vehicle systems and intelligent control systems. In the development process, such key technologies have been tackled as automated guided vehicle system integrated technology, automated guided vehicle path planning and tracking technology, positioning navigation and precise positioning technology, intelligent operation decision-making system. Currently, the system has been put into trial operation; the main technical parameters have reached the international advanced level. The paper ends with the applied prospects of the system in China’s container terminal.  
  关键词: AGV, Intelligent Vehicle, Container terminal  
  下载:         下载 [6 ]  
  vol   1 (1)  :258
 
   147. Development and Application of Container Automated Guided Vehicle System
    作者姓名: Haibo Li, Yunfei Zou, and Guangyu Li  
  摘要:   This paper introduces the development process of Automated Guided Vehicle System, which is China's independently developed intelligent container transport vehicle system. The system consists of positioning and navigation systems, wireless communication systems, automated guided vehicle systems and intelligent control systems. In the development process, such key technologies have been tackled as automated guided vehicle system integrated technology, automated guided vehicle path planning and tracking technology, positioning navigation and precise positioning technology, intelligent operation decision-making system. Currently, the system has been put into trial operation; the main technical parameters have reached the international advanced level. The paper ends with the applied prospects of the system in China’s container terminal.  
  关键词: AGV, Intelligent Vehicle, Container terminal  
  下载:         下载 [6 ]  
  vol   1 (1)  :258
 
   148. Development and Application of Container Automated Guided Vehicle System
    作者姓名: Haibo Li, Yunfei Zou, and Guangyu Li  
  摘要:   This paper introduces the development process of Automated Guided Vehicle System, which is China's independently developed intelligent container transport vehicle system. The system consists of positioning and navigation systems, wireless communication systems, automated guided vehicle systems and intelligent control systems. In the development process, such key technologies have been tackled as automated guided vehicle system integrated technology, automated guided vehicle path planning and tracking technology, positioning navigation and precise positioning technology, intelligent operation decision-making system. Currently, the system has been put into trial operation; the main technical parameters have reached the international advanced level. The paper ends with the applied prospects of the system in China’s container terminal.  
  关键词: AGV, Intelligent Vehicle, Container terminal  
  下载:         下载 [6 ]  
  vol   1 (1)  :258
 
   149. Model Predictive Control for Intelligent Vehicle Lane Change
    作者姓名: Huarong Zheng, Zhen Huang, Chaozhong Wu, and R. R. Negenborn  
  摘要:   Lane change on highways is a demanding and critical maneuver, for it involves the surveillance of vehicles both in the original and targeted lane and the control of both longitudinal and lateral movement. However, with the development of Cooperative Vehicle Infrastructure Systems (CVISs), it is possible to develop precise control approaches based on the information collected by CVIS in real time to realize safe lane change of intelligent vehicles. A Model Predictive Control (MPC) system for safety lane change with path-tracking capability is proposed in this paper. The safety lane change trajectory is planned with consideration of collision avoidance and comfort using a polynomial path planning method. A nonlinear vehicle lateral movement model combining the two-degree of freedom vehicle dynamics model with a lateral kinematics model is constructed and validated using the fully nonlinear vehicle dynamics simulation software CarSim. Then the established vehicle model is successively linearized, after which the linearization result is employed as the prediction model of the MPC controller and based on this, the safety lane change MPC controller is designed. Simulation results show that the vehicle can follow the exact safe lane change path effectively under the control of the controller. Moreover, discussions on the potential application of MPC in the area of vehicle control are presented.  
  关键词: Safety Lane change, path planning, Model Predictive Control, intelligent vehicles  
  下载:         下载 [6 ]  
  vol   1 (1)  :265
 
   150. Model Predictive Control for Intelligent Vehicle Lane Change
    作者姓名: Huarong Zheng, Zhen Huang, Chaozhong Wu, and R. R. Negenborn  
  摘要:   Lane change on highways is a demanding and critical maneuver, for it involves the surveillance of vehicles both in the original and targeted lane and the control of both longitudinal and lateral movement. However, with the development of Cooperative Vehicle Infrastructure Systems (CVISs), it is possible to develop precise control approaches based on the information collected by CVIS in real time to realize safe lane change of intelligent vehicles. A Model Predictive Control (MPC) system for safety lane change with path-tracking capability is proposed in this paper. The safety lane change trajectory is planned with consideration of collision avoidance and comfort using a polynomial path planning method. A nonlinear vehicle lateral movement model combining the two-degree of freedom vehicle dynamics model with a lateral kinematics model is constructed and validated using the fully nonlinear vehicle dynamics simulation software CarSim. Then the established vehicle model is successively linearized, after which the linearization result is employed as the prediction model of the MPC controller and based on this, the safety lane change MPC controller is designed. Simulation results show that the vehicle can follow the exact safe lane change path effectively under the control of the controller. Moreover, discussions on the potential application of MPC in the area of vehicle control are presented.  
  关键词: Safety Lane change, path planning, Model Predictive Control, intelligent vehicles  
  下载:         下载 [6 ]  
  vol   1 (1)  :265
 
   151. Model Predictive Control for Intelligent Vehicle Lane Change
    作者姓名: Huarong Zheng, Zhen Huang, Chaozhong Wu, and R. R. Negenborn  
  摘要:   Lane change on highways is a demanding and critical maneuver, for it involves the surveillance of vehicles both in the original and targeted lane and the control of both longitudinal and lateral movement. However, with the development of Cooperative Vehicle Infrastructure Systems (CVISs), it is possible to develop precise control approaches based on the information collected by CVIS in real time to realize safe lane change of intelligent vehicles. A Model Predictive Control (MPC) system for safety lane change with path-tracking capability is proposed in this paper. The safety lane change trajectory is planned with consideration of collision avoidance and comfort using a polynomial path planning method. A nonlinear vehicle lateral movement model combining the two-degree of freedom vehicle dynamics model with a lateral kinematics model is constructed and validated using the fully nonlinear vehicle dynamics simulation software CarSim. Then the established vehicle model is successively linearized, after which the linearization result is employed as the prediction model of the MPC controller and based on this, the safety lane change MPC controller is designed. Simulation results show that the vehicle can follow the exact safe lane change path effectively under the control of the controller. Moreover, discussions on the potential application of MPC in the area of vehicle control are presented.  
  关键词: Safety Lane change, path planning, Model Predictive Control, intelligent vehicles  
  下载:         下载 [6 ]  
  vol   1 (1)  :265
 
   152. Model Predictive Control for Intelligent Vehicle Lane Change
    作者姓名: Huarong Zheng, Zhen Huang, Chaozhong Wu, and R. R. Negenborn  
  摘要:   Lane change on highways is a demanding and critical maneuver, for it involves the surveillance of vehicles both in the original and targeted lane and the control of both longitudinal and lateral movement. However, with the development of Cooperative Vehicle Infrastructure Systems (CVISs), it is possible to develop precise control approaches based on the information collected by CVIS in real time to realize safe lane change of intelligent vehicles. A Model Predictive Control (MPC) system for safety lane change with path-tracking capability is proposed in this paper. The safety lane change trajectory is planned with consideration of collision avoidance and comfort using a polynomial path planning method. A nonlinear vehicle lateral movement model combining the two-degree of freedom vehicle dynamics model with a lateral kinematics model is constructed and validated using the fully nonlinear vehicle dynamics simulation software CarSim. Then the established vehicle model is successively linearized, after which the linearization result is employed as the prediction model of the MPC controller and based on this, the safety lane change MPC controller is designed. Simulation results show that the vehicle can follow the exact safe lane change path effectively under the control of the controller. Moreover, discussions on the potential application of MPC in the area of vehicle control are presented.  
  关键词: Safety Lane change, path planning, Model Predictive Control, intelligent vehicles  
  下载:         下载 [6 ]  
  vol   1 (1)  :265
 
   153. An Improved Hough Transform Applied to Lane Lines Extracting
    作者姓名: Yi-shu Yang, Yi-xin Su, and Dan-hong Zhang  
  摘要:     In order to extract the lane lines accurately, this paper proposes a Limited-area Hough Transform (LHT) based on the region of interest (ROI).This article first preprocesses the color image, then finds the varnishing point and gets the ROI through an improved translation according to the varnishing point. Finally, two lane lines are extracted accurately by the LHT. Simulation results demonstrate LHT has higher real-time performance and quite high recognition rate compared with the standard Hough Transform (SHT).  
  关键词: LHT the ROI the lane lines varnishing point improved translation  
  下载:         下载 [6 ]  
  vol   1 (1)  :277
 
   154. An Improved Hough Transform Applied to Lane Lines Extracting
    作者姓名: Yi-shu Yang, Yi-xin Su, and Dan-hong Zhang  
  摘要:     In order to extract the lane lines accurately, this paper proposes a Limited-area Hough Transform (LHT) based on the region of interest (ROI).This article first preprocesses the color image, then finds the varnishing point and gets the ROI through an improved translation according to the varnishing point. Finally, two lane lines are extracted accurately by the LHT. Simulation results demonstrate LHT has higher real-time performance and quite high recognition rate compared with the standard Hough Transform (SHT).  
  关键词: LHT the ROI the lane lines varnishing point improved translation  
  下载:         下载 [6 ]  
  vol   1 (1)  :277
 
   155. An Improved Hough Transform Applied to Lane Lines Extracting
    作者姓名: Yi-shu Yang, Yi-xin Su, and Dan-hong Zhang  
  摘要:     In order to extract the lane lines accurately, this paper proposes a Limited-area Hough Transform (LHT) based on the region of interest (ROI).This article first preprocesses the color image, then finds the varnishing point and gets the ROI through an improved translation according to the varnishing point. Finally, two lane lines are extracted accurately by the LHT. Simulation results demonstrate LHT has higher real-time performance and quite high recognition rate compared with the standard Hough Transform (SHT).  
  关键词: LHT the ROI the lane lines varnishing point improved translation  
  下载:         下载 [6 ]  
  vol   1 (1)  :277
 
   156. An Improved Hough Transform Applied to Lane Lines Extracting
    作者姓名: Yi-shu Yang, Yi-xin Su, and Dan-hong Zhang  
  摘要:     In order to extract the lane lines accurately, this paper proposes a Limited-area Hough Transform (LHT) based on the region of interest (ROI).This article first preprocesses the color image, then finds the varnishing point and gets the ROI through an improved translation according to the varnishing point. Finally, two lane lines are extracted accurately by the LHT. Simulation results demonstrate LHT has higher real-time performance and quite high recognition rate compared with the standard Hough Transform (SHT).  
  关键词: LHT the ROI the lane lines varnishing point improved translation  
  下载:         下载 [6 ]  
  vol   1 (1)  :277
 
   157. Security Research on Reporting Data of Remote Monitoring Device
    作者姓名: Shunda Li  
  摘要:   A lot of researches ignore authenticity and integrity check of reported data from remote monitoring devices, which may bring security concerns. For potential attacks such as data forgery, historical data replay, this paper put forward a method that implement a customized encryption algorithm and couple with MCU IAP (In Application Programming) capability to enhance security, which can satisfy classified security requirements and guarantee the data confidentiality, integrity, and freshness with rational cost. This framework makes the same device have wider application fields and comly with distinct criterion. For secret department, malicious data cheating may be dangerous if security check is ignored.  
  关键词: Data Reporting Security; Classified Security; Customized Encryption  
  下载:         下载 [6 ]  
  vol   1 (1)  :283
 
   158. Security Research on Reporting Data of Remote Monitoring Device
    作者姓名: Shunda Li  
  摘要:   A lot of researches ignore authenticity and integrity check of reported data from remote monitoring devices, which may bring security concerns. For potential attacks such as data forgery, historical data replay, this paper put forward a method that implement a customized encryption algorithm and couple with MCU IAP (In Application Programming) capability to enhance security, which can satisfy classified security requirements and guarantee the data confidentiality, integrity, and freshness with rational cost. This framework makes the same device have wider application fields and comly with distinct criterion. For secret department, malicious data cheating may be dangerous if security check is ignored.  
  关键词: Data Reporting Security; Classified Security; Customized Encryption  
  下载:         下载 [6 ]  
  vol   1 (1)  :283
 
   159. Security Research on Reporting Data of Remote Monitoring Device
    作者姓名: Shunda Li  
  摘要:   A lot of researches ignore authenticity and integrity check of reported data from remote monitoring devices, which may bring security concerns. For potential attacks such as data forgery, historical data replay, this paper put forward a method that implement a customized encryption algorithm and couple with MCU IAP (In Application Programming) capability to enhance security, which can satisfy classified security requirements and guarantee the data confidentiality, integrity, and freshness with rational cost. This framework makes the same device have wider application fields and comly with distinct criterion. For secret department, malicious data cheating may be dangerous if security check is ignored.  
  关键词: Data Reporting Security; Classified Security; Customized Encryption  
  下载:         下载 [6 ]  
  vol   1 (1)  :283
 
   160. Security Research on Reporting Data of Remote Monitoring Device
    作者姓名: Shunda Li  
  摘要:   A lot of researches ignore authenticity and integrity check of reported data from remote monitoring devices, which may bring security concerns. For potential attacks such as data forgery, historical data replay, this paper put forward a method that implement a customized encryption algorithm and couple with MCU IAP (In Application Programming) capability to enhance security, which can satisfy classified security requirements and guarantee the data confidentiality, integrity, and freshness with rational cost. This framework makes the same device have wider application fields and comly with distinct criterion. For secret department, malicious data cheating may be dangerous if security check is ignored.  
  关键词: Data Reporting Security; Classified Security; Customized Encryption  
  下载:         下载 [6 ]  
  vol   1 (1)  :283
 
   161. Risk Warning System for Complex Operating Environment Sections of Expressway
    作者姓名: Yong Fang and Zhongyin Guo  
  摘要:   Complex operating environment sections were analyzed the risks from geometry line conditions, road facilities characteristics, traffic environment and climatic environment. Risk Warning System for complex operating environment sections of expressway was designed by five subsystems, namely, Risk information collection and releasing module, RFID based dangerous goods vehicles monitoring module, GIS-based database management module, risk warning module and driving safety management decision-making aiding module. Based on safety decision-making model for measurement type and safety speed control standards which were proposed under various pavements conditions, visibilities and traffic environments, the system is capable of supporting complex operating environment sections of expressway risk control, traffic flow coordination and emergency management, etc.  
  关键词: expressway safety, complex operating environment sections, risk warning system, safety control standards, safety decision-making model  
  下载:         下载 [6 ]  
  vol   1 (1)  :289
 
   162. Risk Warning System for Complex Operating Environment Sections of Expressway
    作者姓名: Yong Fang and Zhongyin Guo  
  摘要:   Complex operating environment sections were analyzed the risks from geometry line conditions, road facilities characteristics, traffic environment and climatic environment. Risk Warning System for complex operating environment sections of expressway was designed by five subsystems, namely, Risk information collection and releasing module, RFID based dangerous goods vehicles monitoring module, GIS-based database management module, risk warning module and driving safety management decision-making aiding module. Based on safety decision-making model for measurement type and safety speed control standards which were proposed under various pavements conditions, visibilities and traffic environments, the system is capable of supporting complex operating environment sections of expressway risk control, traffic flow coordination and emergency management, etc.  
  关键词: expressway safety, complex operating environment sections, risk warning system, safety control standards, safety decision-making model  
  下载:         下载 [6 ]  
  vol   1 (1)  :289
 
   163. Risk Warning System for Complex Operating Environment Sections of Expressway
    作者姓名: Yong Fang and Zhongyin Guo  
  摘要:   Complex operating environment sections were analyzed the risks from geometry line conditions, road facilities characteristics, traffic environment and climatic environment. Risk Warning System for complex operating environment sections of expressway was designed by five subsystems, namely, Risk information collection and releasing module, RFID based dangerous goods vehicles monitoring module, GIS-based database management module, risk warning module and driving safety management decision-making aiding module. Based on safety decision-making model for measurement type and safety speed control standards which were proposed under various pavements conditions, visibilities and traffic environments, the system is capable of supporting complex operating environment sections of expressway risk control, traffic flow coordination and emergency management, etc.  
  关键词: expressway safety, complex operating environment sections, risk warning system, safety control standards, safety decision-making model  
  下载:         下载 [6 ]  
  vol   1 (1)  :289
 
   164. Risk Warning System for Complex Operating Environment Sections of Expressway
    作者姓名: Yong Fang and Zhongyin Guo  
  摘要:   Complex operating environment sections were analyzed the risks from geometry line conditions, road facilities characteristics, traffic environment and climatic environment. Risk Warning System for complex operating environment sections of expressway was designed by five subsystems, namely, Risk information collection and releasing module, RFID based dangerous goods vehicles monitoring module, GIS-based database management module, risk warning module and driving safety management decision-making aiding module. Based on safety decision-making model for measurement type and safety speed control standards which were proposed under various pavements conditions, visibilities and traffic environments, the system is capable of supporting complex operating environment sections of expressway risk control, traffic flow coordination and emergency management, etc.  
  关键词: expressway safety, complex operating environment sections, risk warning system, safety control standards, safety decision-making model  
  下载:         下载 [6 ]  
  vol   1 (1)  :289
 
   165. Research of Safety Monitoring System for the Operating Vehicles Inter-connection and Inter-surveillance Based on Internet of Things
    作者姓名: Jinping Shang, Yanhong Li, Xiaonian Sun, and Haiyang Wang  
  摘要:   The safety problem of mass injuries and death caused by operating vehicles is one of the most difficult problems faced by the field of traffic safety in China. Using the Internet of Things technology, building the system of key operating vehicles inter-connection and inter-surveillance, through car GPS system conveying vehicle dynamic information, accessing to government and corporate monitoring platforms, and switching public data, sharing of vehicle information in cross-regional can be achieved, so that the joint supervision in cross-regional could be possible. This paper analyzes the system of Internet of Things’ basic framework, operating mechanism, and existing problems during its operation, and proposes the improved measures for increasing the on-line rate of operating vehicle to grid and achieving reasonable docking in different platforms。  
  关键词: traffic safety,the Internet of Things technology,inter-connection and inter-surveillance,inter-connection and inter-surveillance  
  下载:         下载 [6 ]  
  vol   1 (1)  :296
 
   166. Research of Safety Monitoring System for the Operating Vehicles Inter-connection and Inter-surveillance Based on Internet of Things
    作者姓名: Jinping Shang, Yanhong Li, Xiaonian Sun, and Haiyang Wang  
  摘要:   The safety problem of mass injuries and death caused by operating vehicles is one of the most difficult problems faced by the field of traffic safety in China. Using the Internet of Things technology, building the system of key operating vehicles inter-connection and inter-surveillance, through car GPS system conveying vehicle dynamic information, accessing to government and corporate monitoring platforms, and switching public data, sharing of vehicle information in cross-regional can be achieved, so that the joint supervision in cross-regional could be possible. This paper analyzes the system of Internet of Things’ basic framework, operating mechanism, and existing problems during its operation, and proposes the improved measures for increasing the on-line rate of operating vehicle to grid and achieving reasonable docking in different platforms。  
  关键词: traffic safety,the Internet of Things technology,inter-connection and inter-surveillance,inter-connection and inter-surveillance  
  下载:         下载 [6 ]  
  vol   1 (1)  :296
 
   167. Research of Safety Monitoring System for the Operating Vehicles Inter-connection and Inter-surveillance Based on Internet of Things
    作者姓名: Jinping Shang, Yanhong Li, Xiaonian Sun, and Haiyang Wang  
  摘要:   The safety problem of mass injuries and death caused by operating vehicles is one of the most difficult problems faced by the field of traffic safety in China. Using the Internet of Things technology, building the system of key operating vehicles inter-connection and inter-surveillance, through car GPS system conveying vehicle dynamic information, accessing to government and corporate monitoring platforms, and switching public data, sharing of vehicle information in cross-regional can be achieved, so that the joint supervision in cross-regional could be possible. This paper analyzes the system of Internet of Things’ basic framework, operating mechanism, and existing problems during its operation, and proposes the improved measures for increasing the on-line rate of operating vehicle to grid and achieving reasonable docking in different platforms。  
  关键词: traffic safety,the Internet of Things technology,inter-connection and inter-surveillance,inter-connection and inter-surveillance  
  下载:         下载 [6 ]  
  vol   1 (1)  :296
 
   168. Research of Safety Monitoring System for the Operating Vehicles Inter-connection and Inter-surveillance Based on Internet of Things
    作者姓名: Jinping Shang, Yanhong Li, Xiaonian Sun, and Haiyang Wang  
  摘要:   The safety problem of mass injuries and death caused by operating vehicles is one of the most difficult problems faced by the field of traffic safety in China. Using the Internet of Things technology, building the system of key operating vehicles inter-connection and inter-surveillance, through car GPS system conveying vehicle dynamic information, accessing to government and corporate monitoring platforms, and switching public data, sharing of vehicle information in cross-regional can be achieved, so that the joint supervision in cross-regional could be possible. This paper analyzes the system of Internet of Things’ basic framework, operating mechanism, and existing problems during its operation, and proposes the improved measures for increasing the on-line rate of operating vehicle to grid and achieving reasonable docking in different platforms。  
  关键词: traffic safety,the Internet of Things technology,inter-connection and inter-surveillance,inter-connection and inter-surveillance  
  下载:         下载 [6 ]  
  vol   1 (1)  :296
 
   169. Study on Speed and Speed Limits of Expressway Work Zones
    作者姓名: Xianghai Meng, Yongyi Shi, and Hanqing Xu  
  摘要:   Aim as the following four kinds of freeway work zones, the closed one-way running lane work zone, the closed one-way passing lane work zone, the closed one-way lanes work zone and the closed one-way transition region work zone , the speed distribution of each main component was investigated and analysised. Then, the average speed (i.e. the 85th speed), the speed difference of each component, the speed difference between small and large vehicles and the high-speed vehicles’ percentage were determined. Furthermore, some statistical results were concluded that, throughout upstream normal area, warning area (or transition area) and activity area of work zones, the standard deviation of speed distribution as well as the speed difference between small and large vehicles decreases obviously. At last, according to the law of vehicle speed distribution, speed control principles and suggested limited speed values of each component on freeway work zones based on the characteristic of speed statistical distribution were put forward.  
  关键词: traffic engineering;speed limit value;speed distribution;work zone;expressway  
  下载:         下载 [6 ]  
  vol   1 (1)  :302
 
   170. Study on Speed and Speed Limits of Expressway Work Zones
    作者姓名: Xianghai Meng, Yongyi Shi, and Hanqing Xu  
  摘要:   Aim as the following four kinds of freeway work zones, the closed one-way running lane work zone, the closed one-way passing lane work zone, the closed one-way lanes work zone and the closed one-way transition region work zone , the speed distribution of each main component was investigated and analysised. Then, the average speed (i.e. the 85th speed), the speed difference of each component, the speed difference between small and large vehicles and the high-speed vehicles’ percentage were determined. Furthermore, some statistical results were concluded that, throughout upstream normal area, warning area (or transition area) and activity area of work zones, the standard deviation of speed distribution as well as the speed difference between small and large vehicles decreases obviously. At last, according to the law of vehicle speed distribution, speed control principles and suggested limited speed values of each component on freeway work zones based on the characteristic of speed statistical distribution were put forward.  
  关键词: traffic engineering;speed limit value;speed distribution;work zone;expressway  
  下载:         下载 [6 ]  
  vol   1 (1)  :302
 
   171. Study on Speed and Speed Limits of Expressway Work Zones
    作者姓名: Xianghai Meng, Yongyi Shi, and Hanqing Xu  
  摘要:   Aim as the following four kinds of freeway work zones, the closed one-way running lane work zone, the closed one-way passing lane work zone, the closed one-way lanes work zone and the closed one-way transition region work zone , the speed distribution of each main component was investigated and analysised. Then, the average speed (i.e. the 85th speed), the speed difference of each component, the speed difference between small and large vehicles and the high-speed vehicles’ percentage were determined. Furthermore, some statistical results were concluded that, throughout upstream normal area, warning area (or transition area) and activity area of work zones, the standard deviation of speed distribution as well as the speed difference between small and large vehicles decreases obviously. At last, according to the law of vehicle speed distribution, speed control principles and suggested limited speed values of each component on freeway work zones based on the characteristic of speed statistical distribution were put forward.  
  关键词: traffic engineering;speed limit value;speed distribution;work zone;expressway  
  下载:         下载 [6 ]  
  vol   1 (1)  :302
 
   172. Study on Speed and Speed Limits of Expressway Work Zones
    作者姓名: Xianghai Meng, Yongyi Shi, and Hanqing Xu  
  摘要:   Aim as the following four kinds of freeway work zones, the closed one-way running lane work zone, the closed one-way passing lane work zone, the closed one-way lanes work zone and the closed one-way transition region work zone , the speed distribution of each main component was investigated and analysised. Then, the average speed (i.e. the 85th speed), the speed difference of each component, the speed difference between small and large vehicles and the high-speed vehicles’ percentage were determined. Furthermore, some statistical results were concluded that, throughout upstream normal area, warning area (or transition area) and activity area of work zones, the standard deviation of speed distribution as well as the speed difference between small and large vehicles decreases obviously. At last, according to the law of vehicle speed distribution, speed control principles and suggested limited speed values of each component on freeway work zones based on the characteristic of speed statistical distribution were put forward.  
  关键词: traffic engineering;speed limit value;speed distribution;work zone;expressway  
  下载:         下载 [6 ]  
  vol   1 (1)  :302
 
   173. The Application Based on Internet of Things in Road Traffic Weather
    作者姓名: Liying Sui, Zhihong Chen, and Yongguang He  
  摘要:   In recent years, internet of things technology has been focused widely by people, it is used in more and more areas. According to "internet of things application demonstration project of maintaining road traffic unblocked in extreme meteorological conditions", the first batch project of Internet of things in Beijing, this article introduces the application of Internet of things technology in road traffic weather. Through real-time monitoring and analysis of meteorological information, this article constructs the system of road traffic meteorological service. The system can forecast and early warn the ponding depth, visibility, surface temperature, snow depth, ice and other situation of traffic trunk, improve the level of road traffic management, ensure road traffic safety and smooth in extreme weather conditions.  
  关键词: internet of things, road traffic, weather  
  下载:         下载 [6 ]  
  vol   1 (1)  :309
 
   174. The Application Based on Internet of Things in Road Traffic Weather
    作者姓名: Liying Sui, Zhihong Chen, and Yongguang He  
  摘要:   In recent years, internet of things technology has been focused widely by people, it is used in more and more areas. According to "internet of things application demonstration project of maintaining road traffic unblocked in extreme meteorological conditions", the first batch project of Internet of things in Beijing, this article introduces the application of Internet of things technology in road traffic weather. Through real-time monitoring and analysis of meteorological information, this article constructs the system of road traffic meteorological service. The system can forecast and early warn the ponding depth, visibility, surface temperature, snow depth, ice and other situation of traffic trunk, improve the level of road traffic management, ensure road traffic safety and smooth in extreme weather conditions.  
  关键词: internet of things, road traffic, weather  
  下载:         下载 [6 ]  
  vol   1 (1)  :309
 
   175. The Application Based on Internet of Things in Road Traffic Weather
    作者姓名: Liying Sui, Zhihong Chen, and Yongguang He  
  摘要:   In recent years, internet of things technology has been focused widely by people, it is used in more and more areas. According to "internet of things application demonstration project of maintaining road traffic unblocked in extreme meteorological conditions", the first batch project of Internet of things in Beijing, this article introduces the application of Internet of things technology in road traffic weather. Through real-time monitoring and analysis of meteorological information, this article constructs the system of road traffic meteorological service. The system can forecast and early warn the ponding depth, visibility, surface temperature, snow depth, ice and other situation of traffic trunk, improve the level of road traffic management, ensure road traffic safety and smooth in extreme weather conditions.  
  关键词: internet of things, road traffic, weather  
  下载:         下载 [6 ]  
  vol   1 (1)  :309
 
   176. The Application Based on Internet of Things in Road Traffic Weather
    作者姓名: Liying Sui, Zhihong Chen, and Yongguang He  
  摘要:   In recent years, internet of things technology has been focused widely by people, it is used in more and more areas. According to "internet of things application demonstration project of maintaining road traffic unblocked in extreme meteorological conditions", the first batch project of Internet of things in Beijing, this article introduces the application of Internet of things technology in road traffic weather. Through real-time monitoring and analysis of meteorological information, this article constructs the system of road traffic meteorological service. The system can forecast and early warn the ponding depth, visibility, surface temperature, snow depth, ice and other situation of traffic trunk, improve the level of road traffic management, ensure road traffic safety and smooth in extreme weather conditions.  
  关键词: internet of things, road traffic, weather  
  下载:         下载 [6 ]  
  vol   1 (1)  :309
 
   177. Total Framework and Operation Mechanism Research Based on Internet of Things of Maintaining Traffic Smooth in Bad Weather
    作者姓名: Zhihong Chen, Liying Sui, and Xiaoliang Zhang  
  摘要:   Frequent bad weather impacts seriously traffic system, maintaining traffic smooth in bad weather is an important problem to a city and highway traffic. This paper is based on the "internet of things application demonstration project of maintaining road traffic unblocked in extreme meteorological conditions", the first batch project of Internet of things in Beijing, putting forward the basic location of maintaining road traffic unblocked in bad meteorological conditions; using the top design theory and method of traffic information system with the core of service function, analysing comprehensively the function of system service, raising the overall system architecture; Analysing three-level architecture of maintaining traffic smooth in bad weather of the city / key management departments / emergency support teams, and the mechanism of system operation, data sharing. The beneficial discussion on the total system framework and operating mechanism of maintaining traffic smooth in bad weather is valuable to the standardization, extendibility, and the sustainability of system construction.  
  关键词: bad weather, maintaining traffic smooth, total architecture, operation mechanism  
  下载:         下载 [6 ]  
  vol   1 (1)  :315
 
   178. Total Framework and Operation Mechanism Research Based on Internet of Things of Maintaining Traffic Smooth in Bad Weather
    作者姓名: Zhihong Chen, Liying Sui, and Xiaoliang Zhang  
  摘要:   Frequent bad weather impacts seriously traffic system, maintaining traffic smooth in bad weather is an important problem to a city and highway traffic. This paper is based on the "internet of things application demonstration project of maintaining road traffic unblocked in extreme meteorological conditions", the first batch project of Internet of things in Beijing, putting forward the basic location of maintaining road traffic unblocked in bad meteorological conditions; using the top design theory and method of traffic information system with the core of service function, analysing comprehensively the function of system service, raising the overall system architecture; Analysing three-level architecture of maintaining traffic smooth in bad weather of the city / key management departments / emergency support teams, and the mechanism of system operation, data sharing. The beneficial discussion on the total system framework and operating mechanism of maintaining traffic smooth in bad weather is valuable to the standardization, extendibility, and the sustainability of system construction.  
  关键词: bad weather, maintaining traffic smooth, total architecture, operation mechanism  
  下载:         下载 [6 ]  
  vol   1 (1)  :315
 
   179. Total Framework and Operation Mechanism Research Based on Internet of Things of Maintaining Traffic Smooth in Bad Weather
    作者姓名: Zhihong Chen, Liying Sui, and Xiaoliang Zhang  
  摘要:   Frequent bad weather impacts seriously traffic system, maintaining traffic smooth in bad weather is an important problem to a city and highway traffic. This paper is based on the "internet of things application demonstration project of maintaining road traffic unblocked in extreme meteorological conditions", the first batch project of Internet of things in Beijing, putting forward the basic location of maintaining road traffic unblocked in bad meteorological conditions; using the top design theory and method of traffic information system with the core of service function, analysing comprehensively the function of system service, raising the overall system architecture; Analysing three-level architecture of maintaining traffic smooth in bad weather of the city / key management departments / emergency support teams, and the mechanism of system operation, data sharing. The beneficial discussion on the total system framework and operating mechanism of maintaining traffic smooth in bad weather is valuable to the standardization, extendibility, and the sustainability of system construction.  
  关键词: bad weather, maintaining traffic smooth, total architecture, operation mechanism  
  下载:         下载 [6 ]  
  vol   1 (1)  :315
 
   180. Total Framework and Operation Mechanism Research Based on Internet of Things of Maintaining Traffic Smooth in Bad Weather
    作者姓名: Zhihong Chen, Liying Sui, and Xiaoliang Zhang  
  摘要:   Frequent bad weather impacts seriously traffic system, maintaining traffic smooth in bad weather is an important problem to a city and highway traffic. This paper is based on the "internet of things application demonstration project of maintaining road traffic unblocked in extreme meteorological conditions", the first batch project of Internet of things in Beijing, putting forward the basic location of maintaining road traffic unblocked in bad meteorological conditions; using the top design theory and method of traffic information system with the core of service function, analysing comprehensively the function of system service, raising the overall system architecture; Analysing three-level architecture of maintaining traffic smooth in bad weather of the city / key management departments / emergency support teams, and the mechanism of system operation, data sharing. The beneficial discussion on the total system framework and operating mechanism of maintaining traffic smooth in bad weather is valuable to the standardization, extendibility, and the sustainability of system construction.  
  关键词: bad weather, maintaining traffic smooth, total architecture, operation mechanism  
  下载:         下载 [6 ]  
  vol   1 (1)  :315
 
   181. Transportation Process Monitoring of Car-Carrier in IOT Environment
    作者姓名: Pengge Zhang, Yu Zhang, Le Wang, Chunmeng Zhou, and Wenfeng Li  
  摘要:   Abstract: In the process of Chinese domestic car-transporting largely exists some problems, which involve over-speed, driving when tired, cross-district driving, leakage and stealing of gasoline, transport damage, false declaration on road toll, fuel bill and maintenance cost. In order to avoid potential safety risk and get an optimized route of car transporter, this research aims at resolving these issues on monitoring and locating car-carrier and commodity cars. This paper develops a framework integrating IoT and mobile platform for transportation process monitoring of car-carrier. Based on this research, a mode of process monitoring of car-carrier in IoT environment is proposed, which is beneficial to effectively reducing logistics cost and improving the utility of the logistics management.  
  关键词: car-carrier, commodity cars, acceleration sensor, monitoring, IoT  
  下载:         下载 [6 ]  
  vol   1 (1)  :322
 
   182. Transportation Process Monitoring of Car-Carrier in IOT Environment
    作者姓名: Pengge Zhang, Yu Zhang, Le Wang, Chunmeng Zhou, and Wenfeng Li  
  摘要:   Abstract: In the process of Chinese domestic car-transporting largely exists some problems, which involve over-speed, driving when tired, cross-district driving, leakage and stealing of gasoline, transport damage, false declaration on road toll, fuel bill and maintenance cost. In order to avoid potential safety risk and get an optimized route of car transporter, this research aims at resolving these issues on monitoring and locating car-carrier and commodity cars. This paper develops a framework integrating IoT and mobile platform for transportation process monitoring of car-carrier. Based on this research, a mode of process monitoring of car-carrier in IoT environment is proposed, which is beneficial to effectively reducing logistics cost and improving the utility of the logistics management.  
  关键词: car-carrier, commodity cars, acceleration sensor, monitoring, IoT  
  下载:         下载 [6 ]  
  vol   1 (1)  :322
 
   183. Transportation Process Monitoring of Car-Carrier in IOT Environment
    作者姓名: Pengge Zhang, Yu Zhang, Le Wang, Chunmeng Zhou, and Wenfeng Li  
  摘要:   Abstract: In the process of Chinese domestic car-transporting largely exists some problems, which involve over-speed, driving when tired, cross-district driving, leakage and stealing of gasoline, transport damage, false declaration on road toll, fuel bill and maintenance cost. In order to avoid potential safety risk and get an optimized route of car transporter, this research aims at resolving these issues on monitoring and locating car-carrier and commodity cars. This paper develops a framework integrating IoT and mobile platform for transportation process monitoring of car-carrier. Based on this research, a mode of process monitoring of car-carrier in IoT environment is proposed, which is beneficial to effectively reducing logistics cost and improving the utility of the logistics management.  
  关键词: car-carrier, commodity cars, acceleration sensor, monitoring, IoT  
  下载:         下载 [6 ]  
  vol   1 (1)  :322
 
   184. Transportation Process Monitoring of Car-Carrier in IOT Environment
    作者姓名: Pengge Zhang, Yu Zhang, Le Wang, Chunmeng Zhou, and Wenfeng Li  
  摘要:   Abstract: In the process of Chinese domestic car-transporting largely exists some problems, which involve over-speed, driving when tired, cross-district driving, leakage and stealing of gasoline, transport damage, false declaration on road toll, fuel bill and maintenance cost. In order to avoid potential safety risk and get an optimized route of car transporter, this research aims at resolving these issues on monitoring and locating car-carrier and commodity cars. This paper develops a framework integrating IoT and mobile platform for transportation process monitoring of car-carrier. Based on this research, a mode of process monitoring of car-carrier in IoT environment is proposed, which is beneficial to effectively reducing logistics cost and improving the utility of the logistics management.  
  关键词: car-carrier, commodity cars, acceleration sensor, monitoring, IoT  
  下载:         下载 [6 ]  
  vol   1 (1)  :322
 
   185. Contribution to a Terminology Related to Dependability for the Qualification of an On-board Satellite-based System
    作者姓名: Olimpia Hoinaru, Julie Beugin, and Juliette Marais  
  摘要:   The use of Galileo and EGNOS satellite-based services for the localisation and navigation services will lead to tremendous enhancements in safety, ecology, and efficiency fields for land transportations. For now, these services cannot be used for road and rail safety applications as there is no standardised process to qualify them in these domains. The QualiSaR project proposes to develop such a qualification process by means of the development of a reference measurement system and also by means of creating a terminological structure of metrological and dependability-related localisation performances. The latter aspect is related to the construction of well-founded terminologies that allows misunderstanding to be avoided when applying the process. Metrology covers only one dimension of measurement quality. Its focus relies on accuracy measurement. Dependability and safety aspects (commonly described using the RAMS acronym for Reliability, Availability, Maintainability, and Safety) are essential aspects in holistically evaluating a system. These concepts are well-defined in context of the IEC standards mentioned in references. This paper aims at presenting the research work of formalisation of localisation performances. It discusses in particular our work on the ontology related to the standardised terms describing RAMS issues, and the terminology derived from GNSS related research and engineering (Filip et al., 2008) (Manz et al., 2009). Processing of natural language is used with the aim of creating a structure of dependability and safety-related terms for evaluating automated systems in general and satellite positioning performances more specifically. The attribute hierarchy developed is managed using iglos, a Natural Language Processing tool.  
  关键词: on-board satellite-based system terminology qualification  
  下载:         下载 [6 ]  
  vol   1 (1)  :333
 
   186. Contribution to a Terminology Related to Dependability for the Qualification of an On-board Satellite-based System
    作者姓名: Olimpia Hoinaru, Julie Beugin, and Juliette Marais  
  摘要:   The use of Galileo and EGNOS satellite-based services for the localisation and navigation services will lead to tremendous enhancements in safety, ecology, and efficiency fields for land transportations. For now, these services cannot be used for road and rail safety applications as there is no standardised process to qualify them in these domains. The QualiSaR project proposes to develop such a qualification process by means of the development of a reference measurement system and also by means of creating a terminological structure of metrological and dependability-related localisation performances. The latter aspect is related to the construction of well-founded terminologies that allows misunderstanding to be avoided when applying the process. Metrology covers only one dimension of measurement quality. Its focus relies on accuracy measurement. Dependability and safety aspects (commonly described using the RAMS acronym for Reliability, Availability, Maintainability, and Safety) are essential aspects in holistically evaluating a system. These concepts are well-defined in context of the IEC standards mentioned in references. This paper aims at presenting the research work of formalisation of localisation performances. It discusses in particular our work on the ontology related to the standardised terms describing RAMS issues, and the terminology derived from GNSS related research and engineering (Filip et al., 2008) (Manz et al., 2009). Processing of natural language is used with the aim of creating a structure of dependability and safety-related terms for evaluating automated systems in general and satellite positioning performances more specifically. The attribute hierarchy developed is managed using iglos, a Natural Language Processing tool.  
  关键词: on-board satellite-based system terminology qualification  
  下载:         下载 [6 ]  
  vol   1 (1)  :333
 
   187. Contribution to a Terminology Related to Dependability for the Qualification of an On-board Satellite-based System
    作者姓名: Olimpia Hoinaru, Julie Beugin, and Juliette Marais  
  摘要:   The use of Galileo and EGNOS satellite-based services for the localisation and navigation services will lead to tremendous enhancements in safety, ecology, and efficiency fields for land transportations. For now, these services cannot be used for road and rail safety applications as there is no standardised process to qualify them in these domains. The QualiSaR project proposes to develop such a qualification process by means of the development of a reference measurement system and also by means of creating a terminological structure of metrological and dependability-related localisation performances. The latter aspect is related to the construction of well-founded terminologies that allows misunderstanding to be avoided when applying the process. Metrology covers only one dimension of measurement quality. Its focus relies on accuracy measurement. Dependability and safety aspects (commonly described using the RAMS acronym for Reliability, Availability, Maintainability, and Safety) are essential aspects in holistically evaluating a system. These concepts are well-defined in context of the IEC standards mentioned in references. This paper aims at presenting the research work of formalisation of localisation performances. It discusses in particular our work on the ontology related to the standardised terms describing RAMS issues, and the terminology derived from GNSS related research and engineering (Filip et al., 2008) (Manz et al., 2009). Processing of natural language is used with the aim of creating a structure of dependability and safety-related terms for evaluating automated systems in general and satellite positioning performances more specifically. The attribute hierarchy developed is managed using iglos, a Natural Language Processing tool.  
  关键词: on-board satellite-based system terminology qualification  
  下载:         下载 [6 ]  
  vol   1 (1)  :333
 
   188. Contribution to a Terminology Related to Dependability for the Qualification of an On-board Satellite-based System
    作者姓名: Olimpia Hoinaru, Julie Beugin, and Juliette Marais  
  摘要:   The use of Galileo and EGNOS satellite-based services for the localisation and navigation services will lead to tremendous enhancements in safety, ecology, and efficiency fields for land transportations. For now, these services cannot be used for road and rail safety applications as there is no standardised process to qualify them in these domains. The QualiSaR project proposes to develop such a qualification process by means of the development of a reference measurement system and also by means of creating a terminological structure of metrological and dependability-related localisation performances. The latter aspect is related to the construction of well-founded terminologies that allows misunderstanding to be avoided when applying the process. Metrology covers only one dimension of measurement quality. Its focus relies on accuracy measurement. Dependability and safety aspects (commonly described using the RAMS acronym for Reliability, Availability, Maintainability, and Safety) are essential aspects in holistically evaluating a system. These concepts are well-defined in context of the IEC standards mentioned in references. This paper aims at presenting the research work of formalisation of localisation performances. It discusses in particular our work on the ontology related to the standardised terms describing RAMS issues, and the terminology derived from GNSS related research and engineering (Filip et al., 2008) (Manz et al., 2009). Processing of natural language is used with the aim of creating a structure of dependability and safety-related terms for evaluating automated systems in general and satellite positioning performances more specifically. The attribute hierarchy developed is managed using iglos, a Natural Language Processing tool.  
  关键词: on-board satellite-based system terminology qualification  
  下载:         下载 [6 ]  
  vol   1 (1)  :333
 
   189. Study on Collision Warning of Non-Motorized Traffic Unit Crossing Based on Cooperative Vehicles Infrastructure
    作者姓名: Zhaosheng Yang, Xianglun Mo, and Yao Yu  
  摘要:   The violating traffic rules adventure will be taken when the non-motor driven traffic unit has waited so long that exceeded the red light bearing. At this time the intersection direction in motor vehicles at the end of the green and eager to cross the intersection and acceleration in the green light time, and accompanied by the line of sight keep out, now vulnerable to serious traffic accident. And at night, most of the intersection signal control way as the yellow light flashing, the vehicle speed is high, non-motor traffic unit has a greater risk to cross the street. In view of the above type analysis braking process, construct the collision model of the intersection between non-motor driven traffic unit and motor vehicle, and design collision warning algorithm process and early warning system. Finally in Changchun conduct a intersection test system, the experimental results show that the system has strong reliability.  
  关键词: The synergy of intersection of road and cars, the non-motor vehicle traffic unit, traffic accident, collision warning model  
  下载:         下载 [6 ]  
  vol   1 (1)  :340
 
   190. Study on Collision Warning of Non-Motorized Traffic Unit Crossing Based on Cooperative Vehicles Infrastructure
    作者姓名: Zhaosheng Yang, Xianglun Mo, and Yao Yu  
  摘要:   The violating traffic rules adventure will be taken when the non-motor driven traffic unit has waited so long that exceeded the red light bearing. At this time the intersection direction in motor vehicles at the end of the green and eager to cross the intersection and acceleration in the green light time, and accompanied by the line of sight keep out, now vulnerable to serious traffic accident. And at night, most of the intersection signal control way as the yellow light flashing, the vehicle speed is high, non-motor traffic unit has a greater risk to cross the street. In view of the above type analysis braking process, construct the collision model of the intersection between non-motor driven traffic unit and motor vehicle, and design collision warning algorithm process and early warning system. Finally in Changchun conduct a intersection test system, the experimental results show that the system has strong reliability.  
  关键词: The synergy of intersection of road and cars, the non-motor vehicle traffic unit, traffic accident, collision warning model  
  下载:         下载 [6 ]  
  vol   1 (1)  :340
 
   191. Study on Collision Warning of Non-Motorized Traffic Unit Crossing Based on Cooperative Vehicles Infrastructure
    作者姓名: Zhaosheng Yang, Xianglun Mo, and Yao Yu  
  摘要:   The violating traffic rules adventure will be taken when the non-motor driven traffic unit has waited so long that exceeded the red light bearing. At this time the intersection direction in motor vehicles at the end of the green and eager to cross the intersection and acceleration in the green light time, and accompanied by the line of sight keep out, now vulnerable to serious traffic accident. And at night, most of the intersection signal control way as the yellow light flashing, the vehicle speed is high, non-motor traffic unit has a greater risk to cross the street. In view of the above type analysis braking process, construct the collision model of the intersection between non-motor driven traffic unit and motor vehicle, and design collision warning algorithm process and early warning system. Finally in Changchun conduct a intersection test system, the experimental results show that the system has strong reliability.  
  关键词: The synergy of intersection of road and cars, the non-motor vehicle traffic unit, traffic accident, collision warning model  
  下载:         下载 [6 ]  
  vol   1 (1)  :340
 
   192. Study on Collision Warning of Non-Motorized Traffic Unit Crossing Based on Cooperative Vehicles Infrastructure
    作者姓名: Zhaosheng Yang, Xianglun Mo, and Yao Yu  
  摘要:   The violating traffic rules adventure will be taken when the non-motor driven traffic unit has waited so long that exceeded the red light bearing. At this time the intersection direction in motor vehicles at the end of the green and eager to cross the intersection and acceleration in the green light time, and accompanied by the line of sight keep out, now vulnerable to serious traffic accident. And at night, most of the intersection signal control way as the yellow light flashing, the vehicle speed is high, non-motor traffic unit has a greater risk to cross the street. In view of the above type analysis braking process, construct the collision model of the intersection between non-motor driven traffic unit and motor vehicle, and design collision warning algorithm process and early warning system. Finally in Changchun conduct a intersection test system, the experimental results show that the system has strong reliability.  
  关键词: The synergy of intersection of road and cars, the non-motor vehicle traffic unit, traffic accident, collision warning model  
  下载:         下载 [6 ]  
  vol   1 (1)  :340
 
   193. The Multidimensional Displaying and Analyzing of Taxi Meter Data Based on BI
    作者姓名: Jun Li  
  摘要:   In order to enhance application value of the transportation data center further, it was essential to use business intelligence technology (BI) for data mining, analysising and displaying. On the basis of summarizing the status and trend of BI technology for data display and analysis, the general methods of analysis process for data center were summarized. Taking the taxi meter data of Beijing as an example, the structure of original data was analyzed and the calculation method for taxi operation index was put forward. The indexes were put forward, including operation mileage, operation time, number of carrying passengers, income and so on. They were analyzed from different dimensions using BI technology. The functions of historical data query, report output and others were provided, for supporting the taxi operation management and decision.  
  关键词: meter date; business intelligence; analysis; taxi meter; multidimensional  
  下载:         下载 [6 ]  
  vol   1 (1)  :348
 
   194. The Multidimensional Displaying and Analyzing of Taxi Meter Data Based on BI
    作者姓名: Jun Li  
  摘要:   In order to enhance application value of the transportation data center further, it was essential to use business intelligence technology (BI) for data mining, analysising and displaying. On the basis of summarizing the status and trend of BI technology for data display and analysis, the general methods of analysis process for data center were summarized. Taking the taxi meter data of Beijing as an example, the structure of original data was analyzed and the calculation method for taxi operation index was put forward. The indexes were put forward, including operation mileage, operation time, number of carrying passengers, income and so on. They were analyzed from different dimensions using BI technology. The functions of historical data query, report output and others were provided, for supporting the taxi operation management and decision.  
  关键词: meter date; business intelligence; analysis; taxi meter; multidimensional  
  下载:         下载 [6 ]  
  vol   1 (1)  :348
 
   195. The Multidimensional Displaying and Analyzing of Taxi Meter Data Based on BI
    作者姓名: Jun Li  
  摘要:   In order to enhance application value of the transportation data center further, it was essential to use business intelligence technology (BI) for data mining, analysising and displaying. On the basis of summarizing the status and trend of BI technology for data display and analysis, the general methods of analysis process for data center were summarized. Taking the taxi meter data of Beijing as an example, the structure of original data was analyzed and the calculation method for taxi operation index was put forward. The indexes were put forward, including operation mileage, operation time, number of carrying passengers, income and so on. They were analyzed from different dimensions using BI technology. The functions of historical data query, report output and others were provided, for supporting the taxi operation management and decision.  
  关键词: meter date; business intelligence; analysis; taxi meter; multidimensional  
  下载:         下载 [6 ]  
  vol   1 (1)  :348
 
   196. The Multidimensional Displaying and Analyzing of Taxi Meter Data Based on BI
    作者姓名: Jun Li  
  摘要:   In order to enhance application value of the transportation data center further, it was essential to use business intelligence technology (BI) for data mining, analysising and displaying. On the basis of summarizing the status and trend of BI technology for data display and analysis, the general methods of analysis process for data center were summarized. Taking the taxi meter data of Beijing as an example, the structure of original data was analyzed and the calculation method for taxi operation index was put forward. The indexes were put forward, including operation mileage, operation time, number of carrying passengers, income and so on. They were analyzed from different dimensions using BI technology. The functions of historical data query, report output and others were provided, for supporting the taxi operation management and decision.  
  关键词: meter date; business intelligence; analysis; taxi meter; multidimensional  
  下载:         下载 [6 ]  
  vol   1 (1)  :348
 
   197. Development of Freeway Active Traffic Control System
    作者姓名: Jie Fang, Md. Hadiuzzaman, Xu Wang, and Tony Z. Qiu  
  摘要:   The Active Traffic Demand Management (ATDM) system has drawn more and more attentions in the recent year. According to the traffic mobility researches, the world is suffering from serious traffic congestion every day. The daily recurrent congestion leads to significant loss in terms of the travelers’ time spent on the road and increases the fuel consumptions / emission amount. As a countermeasure, the ATDM control system has been intensively studied to mitigate the traffic congestion. One effective away of implementing the system is to perform pro-active traffic control based on the prediction results from macroscopic traffic flow model. In 2011, City of Edmonton initiated a study to develop an integrated active traffic control system targeting at improving the efficiency of traffic operations on a major freeway corridor around Edmonton using. The Dynamic Taffic Analysis and Management (DynaTAM) control system is designed to implement the integrated control through RM (Ramp Metering) and VSL (Variable Speed Limit). The DynaTAM system is essentially a Model Predictive Control (MPC) based online active traffic control system. The system predicts the future traffic states to capture the incoming traffic congestion and responses with appropriate control signals recommendations to optimize the network traffic conditions. In this study, the control framework of DynaTAM control system is presented in brief. In addition, the fine system tuning procedures of optimizing the sophisticated control system is introduced. To evaluate the proposed system performances, the microscopic traffic simulation software VISSIM is used to reproduce the congested traffic condition and implement the proposed control algorithm as a field implementation. It is observed that the proposed DynaTAM control system can efficiently improve the performance of the traffic network during congestion.  
  关键词: ATDM, VSL, RM, Freeway active traffic control  
  下载:         下载 [6 ]  
  vol   1 (1)  :354
 
   198. Development of Freeway Active Traffic Control System
    作者姓名: Jie Fang, Md. Hadiuzzaman, Xu Wang, and Tony Z. Qiu  
  摘要:   The Active Traffic Demand Management (ATDM) system has drawn more and more attentions in the recent year. According to the traffic mobility researches, the world is suffering from serious traffic congestion every day. The daily recurrent congestion leads to significant loss in terms of the travelers’ time spent on the road and increases the fuel consumptions / emission amount. As a countermeasure, the ATDM control system has been intensively studied to mitigate the traffic congestion. One effective away of implementing the system is to perform pro-active traffic control based on the prediction results from macroscopic traffic flow model. In 2011, City of Edmonton initiated a study to develop an integrated active traffic control system targeting at improving the efficiency of traffic operations on a major freeway corridor around Edmonton using. The Dynamic Taffic Analysis and Management (DynaTAM) control system is designed to implement the integrated control through RM (Ramp Metering) and VSL (Variable Speed Limit). The DynaTAM system is essentially a Model Predictive Control (MPC) based online active traffic control system. The system predicts the future traffic states to capture the incoming traffic congestion and responses with appropriate control signals recommendations to optimize the network traffic conditions. In this study, the control framework of DynaTAM control system is presented in brief. In addition, the fine system tuning procedures of optimizing the sophisticated control system is introduced. To evaluate the proposed system performances, the microscopic traffic simulation software VISSIM is used to reproduce the congested traffic condition and implement the proposed control algorithm as a field implementation. It is observed that the proposed DynaTAM control system can efficiently improve the performance of the traffic network during congestion.  
  关键词: ATDM, VSL, RM, Freeway active traffic control  
  下载:         下载 [6 ]  
  vol   1 (1)  :354
 
   199. Development of Freeway Active Traffic Control System
    作者姓名: Jie Fang, Md. Hadiuzzaman, Xu Wang, and Tony Z. Qiu  
  摘要:   The Active Traffic Demand Management (ATDM) system has drawn more and more attentions in the recent year. According to the traffic mobility researches, the world is suffering from serious traffic congestion every day. The daily recurrent congestion leads to significant loss in terms of the travelers’ time spent on the road and increases the fuel consumptions / emission amount. As a countermeasure, the ATDM control system has been intensively studied to mitigate the traffic congestion. One effective away of implementing the system is to perform pro-active traffic control based on the prediction results from macroscopic traffic flow model. In 2011, City of Edmonton initiated a study to develop an integrated active traffic control system targeting at improving the efficiency of traffic operations on a major freeway corridor around Edmonton using. The Dynamic Taffic Analysis and Management (DynaTAM) control system is designed to implement the integrated control through RM (Ramp Metering) and VSL (Variable Speed Limit). The DynaTAM system is essentially a Model Predictive Control (MPC) based online active traffic control system. The system predicts the future traffic states to capture the incoming traffic congestion and responses with appropriate control signals recommendations to optimize the network traffic conditions. In this study, the control framework of DynaTAM control system is presented in brief. In addition, the fine system tuning procedures of optimizing the sophisticated control system is introduced. To evaluate the proposed system performances, the microscopic traffic simulation software VISSIM is used to reproduce the congested traffic condition and implement the proposed control algorithm as a field implementation. It is observed that the proposed DynaTAM control system can efficiently improve the performance of the traffic network during congestion.  
  关键词: ATDM, VSL, RM, Freeway active traffic control  
  下载:         下载 [6 ]  
  vol   1 (1)  :354
 
   200. Development of Freeway Active Traffic Control System
    作者姓名: Jie Fang, Md. Hadiuzzaman, Xu Wang, and Tony Z. Qiu  
  摘要:   The Active Traffic Demand Management (ATDM) system has drawn more and more attentions in the recent year. According to the traffic mobility researches, the world is suffering from serious traffic congestion every day. The daily recurrent congestion leads to significant loss in terms of the travelers’ time spent on the road and increases the fuel consumptions / emission amount. As a countermeasure, the ATDM control system has been intensively studied to mitigate the traffic congestion. One effective away of implementing the system is to perform pro-active traffic control based on the prediction results from macroscopic traffic flow model. In 2011, City of Edmonton initiated a study to develop an integrated active traffic control system targeting at improving the efficiency of traffic operations on a major freeway corridor around Edmonton using. The Dynamic Taffic Analysis and Management (DynaTAM) control system is designed to implement the integrated control through RM (Ramp Metering) and VSL (Variable Speed Limit). The DynaTAM system is essentially a Model Predictive Control (MPC) based online active traffic control system. The system predicts the future traffic states to capture the incoming traffic congestion and responses with appropriate control signals recommendations to optimize the network traffic conditions. In this study, the control framework of DynaTAM control system is presented in brief. In addition, the fine system tuning procedures of optimizing the sophisticated control system is introduced. To evaluate the proposed system performances, the microscopic traffic simulation software VISSIM is used to reproduce the congested traffic condition and implement the proposed control algorithm as a field implementation. It is observed that the proposed DynaTAM control system can efficiently improve the performance of the traffic network during congestion.  
  关键词: ATDM, VSL, RM, Freeway active traffic control  
  下载:         下载 [6 ]  
  vol   1 (1)  :354
 
   201. Research on the In-Vehicle ITS Technology on Improving Road Safety in China
    作者姓名: Wenfeng Liu, Bin Li, and Liang Hao  
  摘要:   With the development of economy, the quantity of the motor vehicles in China has a rapid growth, and also, the vehicle’s intelligent level is rising, more and more ITS technologies have been applied in more and more vehicles. This paper analysis the advantages of ITS on improving road safety, proposes a classification about the in-vehicle ITS technologies which could improve road safety, concludes the status quo and prospects for application of the in-vehicle ITS technologies on road safety in china, and finally, discuss the potential influencing factors on their in large scale application in China.  
  关键词: ITS, road safety, in-vehicle  
  下载:         下载 [6 ]  
  vol   1 (1)  :360
 
   202. Research on the In-Vehicle ITS Technology on Improving Road Safety in China
    作者姓名: Wenfeng Liu, Bin Li, and Liang Hao  
  摘要:   With the development of economy, the quantity of the motor vehicles in China has a rapid growth, and also, the vehicle’s intelligent level is rising, more and more ITS technologies have been applied in more and more vehicles. This paper analysis the advantages of ITS on improving road safety, proposes a classification about the in-vehicle ITS technologies which could improve road safety, concludes the status quo and prospects for application of the in-vehicle ITS technologies on road safety in china, and finally, discuss the potential influencing factors on their in large scale application in China.  
  关键词: ITS, road safety, in-vehicle  
  下载:         下载 [6 ]  
  vol   1 (1)  :360
 
   203. Research on the In-Vehicle ITS Technology on Improving Road Safety in China
    作者姓名: Wenfeng Liu, Bin Li, and Liang Hao  
  摘要:   With the development of economy, the quantity of the motor vehicles in China has a rapid growth, and also, the vehicle’s intelligent level is rising, more and more ITS technologies have been applied in more and more vehicles. This paper analysis the advantages of ITS on improving road safety, proposes a classification about the in-vehicle ITS technologies which could improve road safety, concludes the status quo and prospects for application of the in-vehicle ITS technologies on road safety in china, and finally, discuss the potential influencing factors on their in large scale application in China.  
  关键词: ITS, road safety, in-vehicle  
  下载:         下载 [6 ]  
  vol   1 (1)  :360
 
   204. Research on the In-Vehicle ITS Technology on Improving Road Safety in China
    作者姓名: Wenfeng Liu, Bin Li, and Liang Hao  
  摘要:   With the development of economy, the quantity of the motor vehicles in China has a rapid growth, and also, the vehicle’s intelligent level is rising, more and more ITS technologies have been applied in more and more vehicles. This paper analysis the advantages of ITS on improving road safety, proposes a classification about the in-vehicle ITS technologies which could improve road safety, concludes the status quo and prospects for application of the in-vehicle ITS technologies on road safety in china, and finally, discuss the potential influencing factors on their in large scale application in China.  
  关键词: ITS, road safety, in-vehicle  
  下载:         下载 [6 ]  
  vol   1 (1)  :360
 
   205. A Model of Arterial Roadway Corridor with Multiple Intersections Near Highway-Rail Grade Crossings
    作者姓名: Yifeng Chen and Laurence R. Rilett  
  摘要:   In this paper, a VISSIM model is set up for a highway-railway corridor with three highway-rail grade crossings (HRGCs) located near signalized intersections on a major arterial roadway. The signal controller with preemption functions was coded using Vehicle Actuated Programming (VAP) language (PTV, 2010), which is an add-on module of VISSIM. The VAP controller can emulate the preemption functions for multiple trains in both the signal controller and the train signal controller from the field. The traffic conditions and the train traffic characteristics in the model were calibrated to local field conditions, using empirical train and traffic data. Finally, the characteristics of the non-steady state traffic conditions, due to westbound and eastbound trains passing through the corridor, were evaluated using the model.  
  关键词: Highway-rail grade crossing (HRGC), VISSIM Simulation, Coordination of Corridor Signals, Signal Preemption  
  下载:         下载 [6 ]  
  vol   1 (1)  :367
 
   206. A Model of Arterial Roadway Corridor with Multiple Intersections Near Highway-Rail Grade Crossings
    作者姓名: Yifeng Chen and Laurence R. Rilett  
  摘要:   In this paper, a VISSIM model is set up for a highway-railway corridor with three highway-rail grade crossings (HRGCs) located near signalized intersections on a major arterial roadway. The signal controller with preemption functions was coded using Vehicle Actuated Programming (VAP) language (PTV, 2010), which is an add-on module of VISSIM. The VAP controller can emulate the preemption functions for multiple trains in both the signal controller and the train signal controller from the field. The traffic conditions and the train traffic characteristics in the model were calibrated to local field conditions, using empirical train and traffic data. Finally, the characteristics of the non-steady state traffic conditions, due to westbound and eastbound trains passing through the corridor, were evaluated using the model.  
  关键词: Highway-rail grade crossing (HRGC), VISSIM Simulation, Coordination of Corridor Signals, Signal Preemption  
  下载:         下载 [6 ]  
  vol   1 (1)  :367
 
   207. A Model of Arterial Roadway Corridor with Multiple Intersections Near Highway-Rail Grade Crossings
    作者姓名: Yifeng Chen and Laurence R. Rilett  
  摘要:   In this paper, a VISSIM model is set up for a highway-railway corridor with three highway-rail grade crossings (HRGCs) located near signalized intersections on a major arterial roadway. The signal controller with preemption functions was coded using Vehicle Actuated Programming (VAP) language (PTV, 2010), which is an add-on module of VISSIM. The VAP controller can emulate the preemption functions for multiple trains in both the signal controller and the train signal controller from the field. The traffic conditions and the train traffic characteristics in the model were calibrated to local field conditions, using empirical train and traffic data. Finally, the characteristics of the non-steady state traffic conditions, due to westbound and eastbound trains passing through the corridor, were evaluated using the model.  
  关键词: Highway-rail grade crossing (HRGC), VISSIM Simulation, Coordination of Corridor Signals, Signal Preemption  
  下载:         下载 [6 ]  
  vol   1 (1)  :367
 
   208. A Model of Arterial Roadway Corridor with Multiple Intersections Near Highway-Rail Grade Crossings
    作者姓名: Yifeng Chen and Laurence R. Rilett  
  摘要:   In this paper, a VISSIM model is set up for a highway-railway corridor with three highway-rail grade crossings (HRGCs) located near signalized intersections on a major arterial roadway. The signal controller with preemption functions was coded using Vehicle Actuated Programming (VAP) language (PTV, 2010), which is an add-on module of VISSIM. The VAP controller can emulate the preemption functions for multiple trains in both the signal controller and the train signal controller from the field. The traffic conditions and the train traffic characteristics in the model were calibrated to local field conditions, using empirical train and traffic data. Finally, the characteristics of the non-steady state traffic conditions, due to westbound and eastbound trains passing through the corridor, were evaluated using the model.  
  关键词: Highway-rail grade crossing (HRGC), VISSIM Simulation, Coordination of Corridor Signals, Signal Preemption  
  下载:         下载 [6 ]  
  vol   1 (1)  :367
 
   209. Microscopic Simulation of Freeway Traffic Flow Based on Cellular Automata
    作者姓名: Youwei Fan and Hailin Zhang  
  摘要:   This paper outlines the fundamental principles of traffic flow modeling and proposes the computer simulation implementation methods of three modules: vehicle generation, speed discrete distribution and vehicle motion. Based on that, a microscopic simulation approach of freeway traffic flow based on cellular automata and the relevant technical process are established and then tested in the typical sections of Xihai Freeway in Jiangxi Province of China. According to the results, the traffic flow simulation technique based on cellular automata can precisely represent the complicated dynamic performances of a freeway system, and this technique provides a new efficient approach to the microscopic simulation of freeway traffic flow.  
  关键词: Traffic flow; microscopic simulation; cellular automata  
  下载:         下载 [6 ]  
  vol   1 (1)  :374
 
   210. Microscopic Simulation of Freeway Traffic Flow Based on Cellular Automata
    作者姓名: Youwei Fan and Hailin Zhang  
  摘要:   This paper outlines the fundamental principles of traffic flow modeling and proposes the computer simulation implementation methods of three modules: vehicle generation, speed discrete distribution and vehicle motion. Based on that, a microscopic simulation approach of freeway traffic flow based on cellular automata and the relevant technical process are established and then tested in the typical sections of Xihai Freeway in Jiangxi Province of China. According to the results, the traffic flow simulation technique based on cellular automata can precisely represent the complicated dynamic performances of a freeway system, and this technique provides a new efficient approach to the microscopic simulation of freeway traffic flow.  
  关键词: Traffic flow; microscopic simulation; cellular automata  
  下载:         下载 [6 ]  
  vol   1 (1)  :374
 
   211. Microscopic Simulation of Freeway Traffic Flow Based on Cellular Automata
    作者姓名: Youwei Fan and Hailin Zhang  
  摘要:   This paper outlines the fundamental principles of traffic flow modeling and proposes the computer simulation implementation methods of three modules: vehicle generation, speed discrete distribution and vehicle motion. Based on that, a microscopic simulation approach of freeway traffic flow based on cellular automata and the relevant technical process are established and then tested in the typical sections of Xihai Freeway in Jiangxi Province of China. According to the results, the traffic flow simulation technique based on cellular automata can precisely represent the complicated dynamic performances of a freeway system, and this technique provides a new efficient approach to the microscopic simulation of freeway traffic flow.  
  关键词: Traffic flow; microscopic simulation; cellular automata  
  下载:         下载 [6 ]  
  vol   1 (1)  :374
 
   212. Microscopic Simulation of Freeway Traffic Flow Based on Cellular Automata
    作者姓名: Youwei Fan and Hailin Zhang  
  摘要:   This paper outlines the fundamental principles of traffic flow modeling and proposes the computer simulation implementation methods of three modules: vehicle generation, speed discrete distribution and vehicle motion. Based on that, a microscopic simulation approach of freeway traffic flow based on cellular automata and the relevant technical process are established and then tested in the typical sections of Xihai Freeway in Jiangxi Province of China. According to the results, the traffic flow simulation technique based on cellular automata can precisely represent the complicated dynamic performances of a freeway system, and this technique provides a new efficient approach to the microscopic simulation of freeway traffic flow.  
  关键词: Traffic flow; microscopic simulation; cellular automata  
  下载:         下载 [6 ]  
  vol   1 (1)  :374
 
   213. Transit Signal Priority Control for Multi-Conflicted Routes under Headway-Based Service
    作者姓名: Yongjie Lin, Xianfeng Yang, and Zou Zou  
  摘要:   This paper presents a transit signal priority (TSP) model designed to benefit both bus riders and passenger-car users. The proposed method, mainly for headway-based strategy, provides a reliable way to determine the optimal green extension duration in response to multiple priority requests from different bus routes. Also, a basic method for queue length estimation is presented to evaluate the impacts of TSP control on passenger cars. The control objective is to minimize bus passenger waiting time at the downstream bus stop, simultaneously ensuring the total person delay of entire intersection is not increased. Using the microscopic simulation, the proposed strategy has shown its benefits in reducing bus passenger waiting time and total intersection delay.  
  关键词: Transit signal control, variable priority time, bus sequence, queue length estimation  
  下载:         下载 [6 ]  
  vol   1 (1)  :384
 
   214. Transit Signal Priority Control for Multi-Conflicted Routes under Headway-Based Service
    作者姓名: Yongjie Lin, Xianfeng Yang, and Zou Zou  
  摘要:   This paper presents a transit signal priority (TSP) model designed to benefit both bus riders and passenger-car users. The proposed method, mainly for headway-based strategy, provides a reliable way to determine the optimal green extension duration in response to multiple priority requests from different bus routes. Also, a basic method for queue length estimation is presented to evaluate the impacts of TSP control on passenger cars. The control objective is to minimize bus passenger waiting time at the downstream bus stop, simultaneously ensuring the total person delay of entire intersection is not increased. Using the microscopic simulation, the proposed strategy has shown its benefits in reducing bus passenger waiting time and total intersection delay.  
  关键词: Transit signal control, variable priority time, bus sequence, queue length estimation  
  下载:         下载 [6 ]  
  vol   1 (1)  :384
 
   215. Transit Signal Priority Control for Multi-Conflicted Routes under Headway-Based Service
    作者姓名: Yongjie Lin, Xianfeng Yang, and Zou Zou  
  摘要:   This paper presents a transit signal priority (TSP) model designed to benefit both bus riders and passenger-car users. The proposed method, mainly for headway-based strategy, provides a reliable way to determine the optimal green extension duration in response to multiple priority requests from different bus routes. Also, a basic method for queue length estimation is presented to evaluate the impacts of TSP control on passenger cars. The control objective is to minimize bus passenger waiting time at the downstream bus stop, simultaneously ensuring the total person delay of entire intersection is not increased. Using the microscopic simulation, the proposed strategy has shown its benefits in reducing bus passenger waiting time and total intersection delay.  
  关键词: Transit signal control, variable priority time, bus sequence, queue length estimation  
  下载:         下载 [6 ]  
  vol   1 (1)  :384
 
   216. Transit Signal Priority Control for Multi-Conflicted Routes under Headway-Based Service
    作者姓名: Yongjie Lin, Xianfeng Yang, and Zou Zou  
  摘要:   This paper presents a transit signal priority (TSP) model designed to benefit both bus riders and passenger-car users. The proposed method, mainly for headway-based strategy, provides a reliable way to determine the optimal green extension duration in response to multiple priority requests from different bus routes. Also, a basic method for queue length estimation is presented to evaluate the impacts of TSP control on passenger cars. The control objective is to minimize bus passenger waiting time at the downstream bus stop, simultaneously ensuring the total person delay of entire intersection is not increased. Using the microscopic simulation, the proposed strategy has shown its benefits in reducing bus passenger waiting time and total intersection delay.  
  关键词: Transit signal control, variable priority time, bus sequence, queue length estimation  
  下载:         下载 [6 ]  
  vol   1 (1)  :384
 
   217. A MANOVA of Historical and Unhistorical Factors for Traffic Volume Forecasting
    作者姓名: Zhenyu Shan, Renbo Qiu, and Yingjie Xia  
  摘要:   Traffic congestion has become a serious social probem. One way to ease trffic congestion is traffic volume forecasting, which is helpful to support decision-making for management and provide faster travel path for passengers. Nowadays, the historical traffic flow data are used as the original input data for predictor training in the most forecasting methods. However, other unhistorical factor could also influence the traffic volume, such as weather and holiday, which is often ignored in the recent forecasting researches. In this paper, we perform a MANOVA analysis for analying the relation between traffic volume and the unhistorical factors. The experiments are carried out on the data collected from a point of a national road, which show that the weather and holiday factors is helpful to the traffic volume forecasting.  
  关键词: Traffic Forecasting, MANOVA, Historical Factors, Unhistorical Factors  
  下载:         下载 [6 ]  
  vol   1 (1)  :391
 
   218. A MANOVA of Historical and Unhistorical Factors for Traffic Volume Forecasting
    作者姓名: Zhenyu Shan, Renbo Qiu, and Yingjie Xia  
  摘要:   Traffic congestion has become a serious social probem. One way to ease trffic congestion is traffic volume forecasting, which is helpful to support decision-making for management and provide faster travel path for passengers. Nowadays, the historical traffic flow data are used as the original input data for predictor training in the most forecasting methods. However, other unhistorical factor could also influence the traffic volume, such as weather and holiday, which is often ignored in the recent forecasting researches. In this paper, we perform a MANOVA analysis for analying the relation between traffic volume and the unhistorical factors. The experiments are carried out on the data collected from a point of a national road, which show that the weather and holiday factors is helpful to the traffic volume forecasting.  
  关键词: Traffic Forecasting, MANOVA, Historical Factors, Unhistorical Factors  
  下载:         下载 [6 ]  
  vol   1 (1)  :391
 
   219. A MANOVA of Historical and Unhistorical Factors for Traffic Volume Forecasting
    作者姓名: Zhenyu Shan, Renbo Qiu, and Yingjie Xia  
  摘要:   Traffic congestion has become a serious social probem. One way to ease trffic congestion is traffic volume forecasting, which is helpful to support decision-making for management and provide faster travel path for passengers. Nowadays, the historical traffic flow data are used as the original input data for predictor training in the most forecasting methods. However, other unhistorical factor could also influence the traffic volume, such as weather and holiday, which is often ignored in the recent forecasting researches. In this paper, we perform a MANOVA analysis for analying the relation between traffic volume and the unhistorical factors. The experiments are carried out on the data collected from a point of a national road, which show that the weather and holiday factors is helpful to the traffic volume forecasting.  
  关键词: Traffic Forecasting, MANOVA, Historical Factors, Unhistorical Factors  
  下载:         下载 [6 ]  
  vol   1 (1)  :391
 
   220. A MANOVA of Historical and Unhistorical Factors for Traffic Volume Forecasting
    作者姓名: Zhenyu Shan, Renbo Qiu, and Yingjie Xia  
  摘要:   Traffic congestion has become a serious social probem. One way to ease trffic congestion is traffic volume forecasting, which is helpful to support decision-making for management and provide faster travel path for passengers. Nowadays, the historical traffic flow data are used as the original input data for predictor training in the most forecasting methods. However, other unhistorical factor could also influence the traffic volume, such as weather and holiday, which is often ignored in the recent forecasting researches. In this paper, we perform a MANOVA analysis for analying the relation between traffic volume and the unhistorical factors. The experiments are carried out on the data collected from a point of a national road, which show that the weather and holiday factors is helpful to the traffic volume forecasting.  
  关键词: Traffic Forecasting, MANOVA, Historical Factors, Unhistorical Factors  
  下载:         下载 [6 ]  
  vol   1 (1)  :391
 
   221. New Sustainable Transportation Solution in Urban Areas, S.A.T. Project: Towards a Simulation Modelling Approach
    作者姓名: Y. Liang, J. Serrano, N. A. Pecorari, and V. Serrano  
  摘要:   S.A.T. Project (US 6.431.078 B2) is a three-dimensional transportation system, - a dynamic transportation system - which will create the first step towards the breaking-up with the bi-dimensional use of modern cities. It is designed for the transportation of people and/or freight (around 15-20 passenger per unit). It consists of unitary electric-vehicles, working under different directions of movement: horizontal, vertical and on a gradient. Its tracks are modular structures in the form of suspended tubes requiring minimum supports. Vehicles will work under various displacement directions (suspended, laid on tracks and laterally supported). It will consequently act as a catalytic tool towards the re-definition of urban space, generating mutations on architectural morphology and typology. It is a private-public transportation system, due to the possibility of interacting under different urban scales, from a smaller one and private to a larger and public. SAT project will provide a possible sustainable solution to the new demand and requirement for the urban transportation in the future. In this paper, a first attempt for developing a library of simulation building blocks is discussed in order to be able to evaluate the SAT-project its’ merits for reliable logistic service, technical feasibility, environmental benefits and cost performance.  
  关键词: S.A.T, 3D transportation system, simulation  
  下载:         下载 [6 ]  
  vol   1 (1)  :398
 
   222. New Sustainable Transportation Solution in Urban Areas, S.A.T. Project: Towards a Simulation Modelling Approach
    作者姓名: Y. Liang, J. Serrano, N. A. Pecorari, and V. Serrano  
  摘要:   S.A.T. Project (US 6.431.078 B2) is a three-dimensional transportation system, - a dynamic transportation system - which will create the first step towards the breaking-up with the bi-dimensional use of modern cities. It is designed for the transportation of people and/or freight (around 15-20 passenger per unit). It consists of unitary electric-vehicles, working under different directions of movement: horizontal, vertical and on a gradient. Its tracks are modular structures in the form of suspended tubes requiring minimum supports. Vehicles will work under various displacement directions (suspended, laid on tracks and laterally supported). It will consequently act as a catalytic tool towards the re-definition of urban space, generating mutations on architectural morphology and typology. It is a private-public transportation system, due to the possibility of interacting under different urban scales, from a smaller one and private to a larger and public. SAT project will provide a possible sustainable solution to the new demand and requirement for the urban transportation in the future. In this paper, a first attempt for developing a library of simulation building blocks is discussed in order to be able to evaluate the SAT-project its’ merits for reliable logistic service, technical feasibility, environmental benefits and cost performance.  
  关键词: S.A.T, 3D transportation system, simulation  
  下载:         下载 [6 ]  
  vol   1 (1)  :398
 
   223. New Sustainable Transportation Solution in Urban Areas, S.A.T. Project: Towards a Simulation Modelling Approach
    作者姓名: Y. Liang, J. Serrano, N. A. Pecorari, and V. Serrano  
  摘要:   S.A.T. Project (US 6.431.078 B2) is a three-dimensional transportation system, - a dynamic transportation system - which will create the first step towards the breaking-up with the bi-dimensional use of modern cities. It is designed for the transportation of people and/or freight (around 15-20 passenger per unit). It consists of unitary electric-vehicles, working under different directions of movement: horizontal, vertical and on a gradient. Its tracks are modular structures in the form of suspended tubes requiring minimum supports. Vehicles will work under various displacement directions (suspended, laid on tracks and laterally supported). It will consequently act as a catalytic tool towards the re-definition of urban space, generating mutations on architectural morphology and typology. It is a private-public transportation system, due to the possibility of interacting under different urban scales, from a smaller one and private to a larger and public. SAT project will provide a possible sustainable solution to the new demand and requirement for the urban transportation in the future. In this paper, a first attempt for developing a library of simulation building blocks is discussed in order to be able to evaluate the SAT-project its’ merits for reliable logistic service, technical feasibility, environmental benefits and cost performance.  
  关键词: S.A.T, 3D transportation system, simulation  
  下载:         下载 [6 ]  
  vol   1 (1)  :398
 
   224. New Sustainable Transportation Solution in Urban Areas, S.A.T. Project: Towards a Simulation Modelling Approach
    作者姓名: Y. Liang, J. Serrano, N. A. Pecorari, and V. Serrano  
  摘要:   S.A.T. Project (US 6.431.078 B2) is a three-dimensional transportation system, - a dynamic transportation system - which will create the first step towards the breaking-up with the bi-dimensional use of modern cities. It is designed for the transportation of people and/or freight (around 15-20 passenger per unit). It consists of unitary electric-vehicles, working under different directions of movement: horizontal, vertical and on a gradient. Its tracks are modular structures in the form of suspended tubes requiring minimum supports. Vehicles will work under various displacement directions (suspended, laid on tracks and laterally supported). It will consequently act as a catalytic tool towards the re-definition of urban space, generating mutations on architectural morphology and typology. It is a private-public transportation system, due to the possibility of interacting under different urban scales, from a smaller one and private to a larger and public. SAT project will provide a possible sustainable solution to the new demand and requirement for the urban transportation in the future. In this paper, a first attempt for developing a library of simulation building blocks is discussed in order to be able to evaluate the SAT-project its’ merits for reliable logistic service, technical feasibility, environmental benefits and cost performance.  
  关键词: S.A.T, 3D transportation system, simulation  
  下载:         下载 [6 ]  
  vol   1 (1)  :398
 
   225. A Bi-Layer Cooperative Model of Pedestrian Behaviors in Complex Topological Environments
    作者姓名: Weiping Tong and Cheng Lin  
  摘要:   A bi-layer cooperative framework is developed to capture pedestrian behaviors at integrated passenger hubs under complex topological environments. According to the framework, a simulation model based on multi agent and floor field cellular automaton for pedestrians in platform floor is proposed, in which grid agents, pedestrian agents and service interface are defined in detail. In the model, to precisely describe irregular boundary of obstacles and make the type of one grid single, finer grid is used for spatial discretization of platform floor; to conveniently and accurately describe the interaction among pedestrians in crowds, each pedestrian occupies multiple grids instead of one, and edges of pedestrian can be overlapped while the core is exclusive. A pedestrian can select one of the twenty possible directions to move. The interaction rules among pedestrians themselves or between pedestrians and environments including exits and obstacles are built. Furthermore, a superimposed algorithm of the attractive field from exit is proposed to cater for complex topological environments with multiple exits and inner obstacles. Average velocity of pedestrians and the trends of evacuation time versus the impact factor of pedestrian herd mentality and familiarity degree on exit position are discussed by simulation experiments.  
  关键词: complex topological environments; pedestrian behaviors; simulation; bi-layer cooperation; multi-agent  
  下载:         下载 [7 ]  
  vol   1 (1)  :407
 
   226. A Bi-Layer Cooperative Model of Pedestrian Behaviors in Complex Topological Environments
    作者姓名: Weiping Tong and Cheng Lin  
  摘要:   A bi-layer cooperative framework is developed to capture pedestrian behaviors at integrated passenger hubs under complex topological environments. According to the framework, a simulation model based on multi agent and floor field cellular automaton for pedestrians in platform floor is proposed, in which grid agents, pedestrian agents and service interface are defined in detail. In the model, to precisely describe irregular boundary of obstacles and make the type of one grid single, finer grid is used for spatial discretization of platform floor; to conveniently and accurately describe the interaction among pedestrians in crowds, each pedestrian occupies multiple grids instead of one, and edges of pedestrian can be overlapped while the core is exclusive. A pedestrian can select one of the twenty possible directions to move. The interaction rules among pedestrians themselves or between pedestrians and environments including exits and obstacles are built. Furthermore, a superimposed algorithm of the attractive field from exit is proposed to cater for complex topological environments with multiple exits and inner obstacles. Average velocity of pedestrians and the trends of evacuation time versus the impact factor of pedestrian herd mentality and familiarity degree on exit position are discussed by simulation experiments.  
  关键词: complex topological environments; pedestrian behaviors; simulation; bi-layer cooperation; multi-agent  
  下载:         下载 [7 ]  
  vol   1 (1)  :407
 
   227. A Bi-Layer Cooperative Model of Pedestrian Behaviors in Complex Topological Environments
    作者姓名: Weiping Tong and Cheng Lin  
  摘要:   A bi-layer cooperative framework is developed to capture pedestrian behaviors at integrated passenger hubs under complex topological environments. According to the framework, a simulation model based on multi agent and floor field cellular automaton for pedestrians in platform floor is proposed, in which grid agents, pedestrian agents and service interface are defined in detail. In the model, to precisely describe irregular boundary of obstacles and make the type of one grid single, finer grid is used for spatial discretization of platform floor; to conveniently and accurately describe the interaction among pedestrians in crowds, each pedestrian occupies multiple grids instead of one, and edges of pedestrian can be overlapped while the core is exclusive. A pedestrian can select one of the twenty possible directions to move. The interaction rules among pedestrians themselves or between pedestrians and environments including exits and obstacles are built. Furthermore, a superimposed algorithm of the attractive field from exit is proposed to cater for complex topological environments with multiple exits and inner obstacles. Average velocity of pedestrians and the trends of evacuation time versus the impact factor of pedestrian herd mentality and familiarity degree on exit position are discussed by simulation experiments.  
  关键词: complex topological environments; pedestrian behaviors; simulation; bi-layer cooperation; multi-agent  
  下载:         下载 [7 ]  
  vol   1 (1)  :407
 
   228. A Bi-Layer Cooperative Model of Pedestrian Behaviors in Complex Topological Environments
    作者姓名: Weiping Tong and Cheng Lin  
  摘要:   A bi-layer cooperative framework is developed to capture pedestrian behaviors at integrated passenger hubs under complex topological environments. According to the framework, a simulation model based on multi agent and floor field cellular automaton for pedestrians in platform floor is proposed, in which grid agents, pedestrian agents and service interface are defined in detail. In the model, to precisely describe irregular boundary of obstacles and make the type of one grid single, finer grid is used for spatial discretization of platform floor; to conveniently and accurately describe the interaction among pedestrians in crowds, each pedestrian occupies multiple grids instead of one, and edges of pedestrian can be overlapped while the core is exclusive. A pedestrian can select one of the twenty possible directions to move. The interaction rules among pedestrians themselves or between pedestrians and environments including exits and obstacles are built. Furthermore, a superimposed algorithm of the attractive field from exit is proposed to cater for complex topological environments with multiple exits and inner obstacles. Average velocity of pedestrians and the trends of evacuation time versus the impact factor of pedestrian herd mentality and familiarity degree on exit position are discussed by simulation experiments.  
  关键词: complex topological environments; pedestrian behaviors; simulation; bi-layer cooperation; multi-agent  
  下载:         下载 [7 ]  
  vol   1 (1)  :407
 
   229. Study on the Layout and the Site Selection Methods of Comprehensive Passenger Hub Based on Dual-Constrained Model
    作者姓名: Guang Yang, Dong Wang, and Xiaonian Sun  
  摘要:   In order to truly optimize the urban passenger transport station system and effectively improve the urban passenger organizational structure as well as improve the passenger organization performance, the constraint conditions of the layout and the site location of comprehensive passenger hub have been proposed in the paper from the macro aspect and the micro aspect in the basis of analyzing the layout mechanism of comprehensive passenger hub. Based on this, the dual-constrained layout and site location model of comprehensive passenger hub has been established and the heuristic algorithm to solve this model has been also proposed. Finally, the scientific nature and the operability of this method in the practical application have been also confirmed by examples.  
  关键词: comprehensive passenger hub; site location; dual-constrained model; heuristic algorithm  
  下载:         下载 [6 ]  
  vol   1 (1)  :418
 
   230. Study on the Layout and the Site Selection Methods of Comprehensive Passenger Hub Based on Dual-Constrained Model
    作者姓名: Guang Yang, Dong Wang, and Xiaonian Sun  
  摘要:   In order to truly optimize the urban passenger transport station system and effectively improve the urban passenger organizational structure as well as improve the passenger organization performance, the constraint conditions of the layout and the site location of comprehensive passenger hub have been proposed in the paper from the macro aspect and the micro aspect in the basis of analyzing the layout mechanism of comprehensive passenger hub. Based on this, the dual-constrained layout and site location model of comprehensive passenger hub has been established and the heuristic algorithm to solve this model has been also proposed. Finally, the scientific nature and the operability of this method in the practical application have been also confirmed by examples.  
  关键词: comprehensive passenger hub; site location; dual-constrained model; heuristic algorithm  
  下载:         下载 [6 ]  
  vol   1 (1)  :418
 
   231. Study on the Layout and the Site Selection Methods of Comprehensive Passenger Hub Based on Dual-Constrained Model
    作者姓名: Guang Yang, Dong Wang, and Xiaonian Sun  
  摘要:   In order to truly optimize the urban passenger transport station system and effectively improve the urban passenger organizational structure as well as improve the passenger organization performance, the constraint conditions of the layout and the site location of comprehensive passenger hub have been proposed in the paper from the macro aspect and the micro aspect in the basis of analyzing the layout mechanism of comprehensive passenger hub. Based on this, the dual-constrained layout and site location model of comprehensive passenger hub has been established and the heuristic algorithm to solve this model has been also proposed. Finally, the scientific nature and the operability of this method in the practical application have been also confirmed by examples.  
  关键词: comprehensive passenger hub; site location; dual-constrained model; heuristic algorithm  
  下载:         下载 [6 ]  
  vol   1 (1)  :418
 
   232. Study on the Layout and the Site Selection Methods of Comprehensive Passenger Hub Based on Dual-Constrained Model
    作者姓名: Guang Yang, Dong Wang, and Xiaonian Sun  
  摘要:   In order to truly optimize the urban passenger transport station system and effectively improve the urban passenger organizational structure as well as improve the passenger organization performance, the constraint conditions of the layout and the site location of comprehensive passenger hub have been proposed in the paper from the macro aspect and the micro aspect in the basis of analyzing the layout mechanism of comprehensive passenger hub. Based on this, the dual-constrained layout and site location model of comprehensive passenger hub has been established and the heuristic algorithm to solve this model has been also proposed. Finally, the scientific nature and the operability of this method in the practical application have been also confirmed by examples.  
  关键词: comprehensive passenger hub; site location; dual-constrained model; heuristic algorithm  
  下载:         下载 [6 ]  
  vol   1 (1)  :418
 
   233. Dynamic Congestion Pricing Model Based on Stackelberg Games
    作者姓名: Lili Ding, Zhengwei Wang, and Luyan Li  
  摘要:   Different from the previous research, this paper presents a dynamic congestion pricing model based on the Stackelberg game between the government and the travel individuals. Firstly, we build a travel cost function for various travel modes from the time cost view. Different from the original literature, ride comfort of various travel modes and dynamic charge rate of government are introduced into the bottleneck model. For the government and travel individuals, Nash equilibrium is employed to describe internality and externality of traffic system respectively. Finally, numerical examples are provided to explain the relationship of these variables.  
  关键词: Congestion pricing; Game theory; Bottleneck model; Dynamic toll  
  下载:         下载 [6 ]  
  vol   1 (1)  :427
 
   234. Dynamic Congestion Pricing Model Based on Stackelberg Games
    作者姓名: Lili Ding, Zhengwei Wang, and Luyan Li  
  摘要:   Different from the previous research, this paper presents a dynamic congestion pricing model based on the Stackelberg game between the government and the travel individuals. Firstly, we build a travel cost function for various travel modes from the time cost view. Different from the original literature, ride comfort of various travel modes and dynamic charge rate of government are introduced into the bottleneck model. For the government and travel individuals, Nash equilibrium is employed to describe internality and externality of traffic system respectively. Finally, numerical examples are provided to explain the relationship of these variables.  
  关键词: Congestion pricing; Game theory; Bottleneck model; Dynamic toll  
  下载:         下载 [6 ]  
  vol   1 (1)  :427
 
   235. Dynamic Congestion Pricing Model Based on Stackelberg Games
    作者姓名: Lili Ding, Zhengwei Wang, and Luyan Li  
  摘要:   Different from the previous research, this paper presents a dynamic congestion pricing model based on the Stackelberg game between the government and the travel individuals. Firstly, we build a travel cost function for various travel modes from the time cost view. Different from the original literature, ride comfort of various travel modes and dynamic charge rate of government are introduced into the bottleneck model. For the government and travel individuals, Nash equilibrium is employed to describe internality and externality of traffic system respectively. Finally, numerical examples are provided to explain the relationship of these variables.  
  关键词: Congestion pricing; Game theory; Bottleneck model; Dynamic toll  
  下载:         下载 [6 ]  
  vol   1 (1)  :427
 
   236. Dynamic Congestion Pricing Model Based on Stackelberg Games
    作者姓名: Lili Ding, Zhengwei Wang, and Luyan Li  
  摘要:   Different from the previous research, this paper presents a dynamic congestion pricing model based on the Stackelberg game between the government and the travel individuals. Firstly, we build a travel cost function for various travel modes from the time cost view. Different from the original literature, ride comfort of various travel modes and dynamic charge rate of government are introduced into the bottleneck model. For the government and travel individuals, Nash equilibrium is employed to describe internality and externality of traffic system respectively. Finally, numerical examples are provided to explain the relationship of these variables.  
  关键词: Congestion pricing; Game theory; Bottleneck model; Dynamic toll  
  下载:         下载 [6 ]  
  vol   1 (1)  :427
 
   237. An Interactive Approach to Active Learning of English in the Transportation English Context
    作者姓名: Jiang Yan  
  摘要:   “Active Learning” in the transportation English context is chosen as the major topic in an interactive perspective. And an empirical research has been conducted to investigate the relationship between individual learner differences and active learning. In this experiment, the author selects sixty first-year transportation majors from Wuhan University of Technology, thus forming experimental group and control group. Through a series of procedure, the author categorizes data from questionnaires, language tests and interviews. The research-based findings demonstrate that the contrast between two groups is striking. The major conclusions obtained from the present investigation are that: 1) active learning is more effective than the traditional teaching approach and instruction; 2) there are some correlations between active learning and affective variables of individual learner, namely, motivation and attitude; 3) there exists no clear-cut relationship of personality variables of individual learner to active learning, namely, field dependence / independence and extroversion/ introversion.  
  关键词: active learning, interaction, individual learner differences, experimental research, transportation English context  
  下载:         下载 [6 ]  
  vol   1 (1)  :434
 
   238. An Interactive Approach to Active Learning of English in the Transportation English Context
    作者姓名: Jiang Yan  
  摘要:   “Active Learning” in the transportation English context is chosen as the major topic in an interactive perspective. And an empirical research has been conducted to investigate the relationship between individual learner differences and active learning. In this experiment, the author selects sixty first-year transportation majors from Wuhan University of Technology, thus forming experimental group and control group. Through a series of procedure, the author categorizes data from questionnaires, language tests and interviews. The research-based findings demonstrate that the contrast between two groups is striking. The major conclusions obtained from the present investigation are that: 1) active learning is more effective than the traditional teaching approach and instruction; 2) there are some correlations between active learning and affective variables of individual learner, namely, motivation and attitude; 3) there exists no clear-cut relationship of personality variables of individual learner to active learning, namely, field dependence / independence and extroversion/ introversion.  
  关键词: active learning, interaction, individual learner differences, experimental research, transportation English context  
  下载:         下载 [6 ]  
  vol   1 (1)  :434
 
   239. An Interactive Approach to Active Learning of English in the Transportation English Context
    作者姓名: Jiang Yan  
  摘要:   “Active Learning” in the transportation English context is chosen as the major topic in an interactive perspective. And an empirical research has been conducted to investigate the relationship between individual learner differences and active learning. In this experiment, the author selects sixty first-year transportation majors from Wuhan University of Technology, thus forming experimental group and control group. Through a series of procedure, the author categorizes data from questionnaires, language tests and interviews. The research-based findings demonstrate that the contrast between two groups is striking. The major conclusions obtained from the present investigation are that: 1) active learning is more effective than the traditional teaching approach and instruction; 2) there are some correlations between active learning and affective variables of individual learner, namely, motivation and attitude; 3) there exists no clear-cut relationship of personality variables of individual learner to active learning, namely, field dependence / independence and extroversion/ introversion.  
  关键词: active learning, interaction, individual learner differences, experimental research, transportation English context  
  下载:         下载 [6 ]  
  vol   1 (1)  :434
 
   240. An Interactive Approach to Active Learning of English in the Transportation English Context
    作者姓名: Jiang Yan  
  摘要:   “Active Learning” in the transportation English context is chosen as the major topic in an interactive perspective. And an empirical research has been conducted to investigate the relationship between individual learner differences and active learning. In this experiment, the author selects sixty first-year transportation majors from Wuhan University of Technology, thus forming experimental group and control group. Through a series of procedure, the author categorizes data from questionnaires, language tests and interviews. The research-based findings demonstrate that the contrast between two groups is striking. The major conclusions obtained from the present investigation are that: 1) active learning is more effective than the traditional teaching approach and instruction; 2) there are some correlations between active learning and affective variables of individual learner, namely, motivation and attitude; 3) there exists no clear-cut relationship of personality variables of individual learner to active learning, namely, field dependence / independence and extroversion/ introversion.  
  关键词: active learning, interaction, individual learner differences, experimental research, transportation English context  
  下载:         下载 [6 ]  
  vol   1 (1)  :434
 
   241. A Prediction Model of Trip Attraction Based on Clustering of Land Utilization
    作者姓名: Guangyuan Dai, Wei Wang, and De Zhao  
  摘要:   Many models of trip attraction based on land utilization ignore the differences among land utilization weight factors of different traffic zones. In this paper, a trip attraction prediction model which clusters the land utilization is studied. Considering the distinctions among the land utilizations of traffic zones, the traffic zones are classified into dissimilar groups by dynamic clustering analysis with principal component scores. Then, land utilization weight factors are calibrated by groups using regression analysis, until all types of land utilization included in different traffic zones of dissimilar groups are endowed with corresponding weight factors. The main parameter adopted here is Importance of Traffic Zone. Finally, the trip attracting volume can be predicted. With a numerical example using the data collected in a field investigation in TongLing City, it is verified that the model has better accuracy and practicality.  
  关键词: trip attraction predict; principal component analysis; clustering analysis; land utilization weight factors; Importance of Traffic Zone  
  下载:         下载 [6 ]  
  vol   1 (1)  :441
 
   242. A Prediction Model of Trip Attraction Based on Clustering of Land Utilization
    作者姓名: Guangyuan Dai, Wei Wang, and De Zhao  
  摘要:   Many models of trip attraction based on land utilization ignore the differences among land utilization weight factors of different traffic zones. In this paper, a trip attraction prediction model which clusters the land utilization is studied. Considering the distinctions among the land utilizations of traffic zones, the traffic zones are classified into dissimilar groups by dynamic clustering analysis with principal component scores. Then, land utilization weight factors are calibrated by groups using regression analysis, until all types of land utilization included in different traffic zones of dissimilar groups are endowed with corresponding weight factors. The main parameter adopted here is Importance of Traffic Zone. Finally, the trip attracting volume can be predicted. With a numerical example using the data collected in a field investigation in TongLing City, it is verified that the model has better accuracy and practicality.  
  关键词: trip attraction predict; principal component analysis; clustering analysis; land utilization weight factors; Importance of Traffic Zone  
  下载:         下载 [6 ]  
  vol   1 (1)  :441
 
   243. A Prediction Model of Trip Attraction Based on Clustering of Land Utilization
    作者姓名: Guangyuan Dai, Wei Wang, and De Zhao  
  摘要:   Many models of trip attraction based on land utilization ignore the differences among land utilization weight factors of different traffic zones. In this paper, a trip attraction prediction model which clusters the land utilization is studied. Considering the distinctions among the land utilizations of traffic zones, the traffic zones are classified into dissimilar groups by dynamic clustering analysis with principal component scores. Then, land utilization weight factors are calibrated by groups using regression analysis, until all types of land utilization included in different traffic zones of dissimilar groups are endowed with corresponding weight factors. The main parameter adopted here is Importance of Traffic Zone. Finally, the trip attracting volume can be predicted. With a numerical example using the data collected in a field investigation in TongLing City, it is verified that the model has better accuracy and practicality.  
  关键词: trip attraction predict; principal component analysis; clustering analysis; land utilization weight factors; Importance of Traffic Zone  
  下载:         下载 [6 ]  
  vol   1 (1)  :441
 
   244. A Prediction Model of Trip Attraction Based on Clustering of Land Utilization
    作者姓名: Guangyuan Dai, Wei Wang, and De Zhao  
  摘要:   Many models of trip attraction based on land utilization ignore the differences among land utilization weight factors of different traffic zones. In this paper, a trip attraction prediction model which clusters the land utilization is studied. Considering the distinctions among the land utilizations of traffic zones, the traffic zones are classified into dissimilar groups by dynamic clustering analysis with principal component scores. Then, land utilization weight factors are calibrated by groups using regression analysis, until all types of land utilization included in different traffic zones of dissimilar groups are endowed with corresponding weight factors. The main parameter adopted here is Importance of Traffic Zone. Finally, the trip attracting volume can be predicted. With a numerical example using the data collected in a field investigation in TongLing City, it is verified that the model has better accuracy and practicality.  
  关键词: trip attraction predict; principal component analysis; clustering analysis; land utilization weight factors; Importance of Traffic Zone  
  下载:         下载 [6 ]  
  vol   1 (1)  :441
 
   245. Rural Road Network Layout Based on FCM Clustering Algorithm and Traffic Location Method
    作者姓名: Shuang Zhang, Yulin Chang, Zhenhong Wu, and Dabing Shi  
  摘要:   Rural road network, together with national and provincial road network constitute a complete road network system. It is widely distributed, covering most parts of the rural areas. Road network layout is a core part of the road network planning system; its rationality and feasibility directly impact the success of road network planning. Based on the characteristics and research of rural road network layout, a method combines FCM (Fuzzy C-Means) clustering algorithm and traffic location method is presented. The validity of the method is tested through an application example.  
  关键词: Rural road network layout; FCM clustering algorithm; Traffic location  
  下载:         下载 [6 ]  
  vol   1 (1)  :449
 
   246. Rural Road Network Layout Based on FCM Clustering Algorithm and Traffic Location Method
    作者姓名: Shuang Zhang, Yulin Chang, Zhenhong Wu, and Dabing Shi  
  摘要:   Rural road network, together with national and provincial road network constitute a complete road network system. It is widely distributed, covering most parts of the rural areas. Road network layout is a core part of the road network planning system; its rationality and feasibility directly impact the success of road network planning. Based on the characteristics and research of rural road network layout, a method combines FCM (Fuzzy C-Means) clustering algorithm and traffic location method is presented. The validity of the method is tested through an application example.  
  关键词: Rural road network layout; FCM clustering algorithm; Traffic location  
  下载:         下载 [6 ]  
  vol   1 (1)  :449
 
   247. Rural Road Network Layout Based on FCM Clustering Algorithm and Traffic Location Method
    作者姓名: Shuang Zhang, Yulin Chang, Zhenhong Wu, and Dabing Shi  
  摘要:   Rural road network, together with national and provincial road network constitute a complete road network system. It is widely distributed, covering most parts of the rural areas. Road network layout is a core part of the road network planning system; its rationality and feasibility directly impact the success of road network planning. Based on the characteristics and research of rural road network layout, a method combines FCM (Fuzzy C-Means) clustering algorithm and traffic location method is presented. The validity of the method is tested through an application example.  
  关键词: Rural road network layout; FCM clustering algorithm; Traffic location  
  下载:         下载 [6 ]  
  vol   1 (1)  :449
 
   248. Rural Road Network Layout Based on FCM Clustering Algorithm and Traffic Location Method
    作者姓名: Shuang Zhang, Yulin Chang, Zhenhong Wu, and Dabing Shi  
  摘要:   Rural road network, together with national and provincial road network constitute a complete road network system. It is widely distributed, covering most parts of the rural areas. Road network layout is a core part of the road network planning system; its rationality and feasibility directly impact the success of road network planning. Based on the characteristics and research of rural road network layout, a method combines FCM (Fuzzy C-Means) clustering algorithm and traffic location method is presented. The validity of the method is tested through an application example.  
  关键词: Rural road network layout; FCM clustering algorithm; Traffic location  
  下载:         下载 [6 ]  
  vol   1 (1)  :449
 
   249. The Layout Planning Method and the Process Analysis of Expressway
    作者姓名: Yang Guang, Bu Lin, and Sun Xiaonian  
  摘要:   The reasonable layout and planning of the expressway network is an important way to solve the urban traffic problems. The recommended value of the minimum inner-ring radius of the expressway has been provided in this paper. And the layout method of the expressway based on the division of traffic units has been also improved. At the same time, according to the traffic location theory, the layout method of the annular expressway network and the non-annular expressway network has been provided. In this paper, Harbin is taken as the example. The layout program of the expressway network in Harbin has been offered and the feasibility of the method has been provided in this paper.  
  关键词: expressway; inner-ring radius; layout method  
  下载:         下载 [6 ]  
  vol   1 (1)  :455
 
   250. The Layout Planning Method and the Process Analysis of Expressway
    作者姓名: Yang Guang, Bu Lin, and Sun Xiaonian  
  摘要:   The reasonable layout and planning of the expressway network is an important way to solve the urban traffic problems. The recommended value of the minimum inner-ring radius of the expressway has been provided in this paper. And the layout method of the expressway based on the division of traffic units has been also improved. At the same time, according to the traffic location theory, the layout method of the annular expressway network and the non-annular expressway network has been provided. In this paper, Harbin is taken as the example. The layout program of the expressway network in Harbin has been offered and the feasibility of the method has been provided in this paper.  
  关键词: expressway; inner-ring radius; layout method  
  下载:         下载 [6 ]  
  vol   1 (1)  :455
 
   251. The Layout Planning Method and the Process Analysis of Expressway
    作者姓名: Yang Guang, Bu Lin, and Sun Xiaonian  
  摘要:   The reasonable layout and planning of the expressway network is an important way to solve the urban traffic problems. The recommended value of the minimum inner-ring radius of the expressway has been provided in this paper. And the layout method of the expressway based on the division of traffic units has been also improved. At the same time, according to the traffic location theory, the layout method of the annular expressway network and the non-annular expressway network has been provided. In this paper, Harbin is taken as the example. The layout program of the expressway network in Harbin has been offered and the feasibility of the method has been provided in this paper.  
  关键词: expressway; inner-ring radius; layout method  
  下载:         下载 [6 ]  
  vol   1 (1)  :455
 
   252. The Layout Planning Method and the Process Analysis of Expressway
    作者姓名: Yang Guang, Bu Lin, and Sun Xiaonian  
  摘要:   The reasonable layout and planning of the expressway network is an important way to solve the urban traffic problems. The recommended value of the minimum inner-ring radius of the expressway has been provided in this paper. And the layout method of the expressway based on the division of traffic units has been also improved. At the same time, according to the traffic location theory, the layout method of the annular expressway network and the non-annular expressway network has been provided. In this paper, Harbin is taken as the example. The layout program of the expressway network in Harbin has been offered and the feasibility of the method has been provided in this paper.  
  关键词: expressway; inner-ring radius; layout method  
  下载:         下载 [6 ]  
  vol   1 (1)  :455
 
   253. Research about Data Processing for Tunnel Deformation Monitoring Based on GPS Monitoring Technique
    作者姓名: Ji-hong Song, Min Huang, Si-ran Shen, and Shen Zhong  
  摘要:   The use of GPS is mainly focused on the slope deformation monitoring for highway safety monitoring both at home and abroad , but the research about GPS monitoring data for concealed works such as tunnel is little. Because of its advantages, it is a trend that GPS monitoring technique will be used for tunnel deformation monitoring. The paper uses GPS monitoring technique to real-timely monitor the deformation of DA Shan-Po Tunnel, and verifies the feasibility that GPS monitoring technique used to the DA Shan-Po Tunnel through data processing and analyzing. And we hope that the study will provide reference for similar projects.  
  关键词: GPS monitoring technique, tunnel, deformation monitoring  
  下载:         下载 [6 ]  
  vol   1 (1)  :462
 
   254. Research about Data Processing for Tunnel Deformation Monitoring Based on GPS Monitoring Technique
    作者姓名: Ji-hong Song, Min Huang, Si-ran Shen, and Shen Zhong  
  摘要:   The use of GPS is mainly focused on the slope deformation monitoring for highway safety monitoring both at home and abroad , but the research about GPS monitoring data for concealed works such as tunnel is little. Because of its advantages, it is a trend that GPS monitoring technique will be used for tunnel deformation monitoring. The paper uses GPS monitoring technique to real-timely monitor the deformation of DA Shan-Po Tunnel, and verifies the feasibility that GPS monitoring technique used to the DA Shan-Po Tunnel through data processing and analyzing. And we hope that the study will provide reference for similar projects.  
  关键词: GPS monitoring technique, tunnel, deformation monitoring  
  下载:         下载 [6 ]  
  vol   1 (1)  :462
 
   255. Research about Data Processing for Tunnel Deformation Monitoring Based on GPS Monitoring Technique
    作者姓名: Ji-hong Song, Min Huang, Si-ran Shen, and Shen Zhong  
  摘要:   The use of GPS is mainly focused on the slope deformation monitoring for highway safety monitoring both at home and abroad , but the research about GPS monitoring data for concealed works such as tunnel is little. Because of its advantages, it is a trend that GPS monitoring technique will be used for tunnel deformation monitoring. The paper uses GPS monitoring technique to real-timely monitor the deformation of DA Shan-Po Tunnel, and verifies the feasibility that GPS monitoring technique used to the DA Shan-Po Tunnel through data processing and analyzing. And we hope that the study will provide reference for similar projects.  
  关键词: GPS monitoring technique, tunnel, deformation monitoring  
  下载:         下载 [6 ]  
  vol   1 (1)  :462
 
   256. Research about Data Processing for Tunnel Deformation Monitoring Based on GPS Monitoring Technique
    作者姓名: Ji-hong Song, Min Huang, Si-ran Shen, and Shen Zhong  
  摘要:   The use of GPS is mainly focused on the slope deformation monitoring for highway safety monitoring both at home and abroad , but the research about GPS monitoring data for concealed works such as tunnel is little. Because of its advantages, it is a trend that GPS monitoring technique will be used for tunnel deformation monitoring. The paper uses GPS monitoring technique to real-timely monitor the deformation of DA Shan-Po Tunnel, and verifies the feasibility that GPS monitoring technique used to the DA Shan-Po Tunnel through data processing and analyzing. And we hope that the study will provide reference for similar projects.  
  关键词: GPS monitoring technique, tunnel, deformation monitoring  
  下载:         下载 [6 ]  
  vol   1 (1)  :462
 
   257. Cause and Countermeasure of Structure Disease of Bridge
    作者姓名: Ruiwei Fang and Xiuzhi Yang  
  摘要:   With the rapid development of transportation construction in China, bridges with diseases became more and more, bridge reinforcement became a new topics facing the bridge constructors. This paper combined with the practice of bridges construction and maintainence, analyzes the factor of structural formation diseases of beam bridges and arch bridges, particular the disease cause of abutments and foundation of bridges,and puts forward relevant disease treatment and prevention measures , to improve the overall quality and carrying capacity of bridge structure, and extend the service life of the bridges as much as possible, ensure the safety of bridges traffic.  
  关键词: Highway bridge; structure disease; factor; countermeasure  
  下载:         下载 [6 ]  
  vol   1 (1)  :470
 
   258. Cause and Countermeasure of Structure Disease of Bridge
    作者姓名: Ruiwei Fang and Xiuzhi Yang  
  摘要:   With the rapid development of transportation construction in China, bridges with diseases became more and more, bridge reinforcement became a new topics facing the bridge constructors. This paper combined with the practice of bridges construction and maintainence, analyzes the factor of structural formation diseases of beam bridges and arch bridges, particular the disease cause of abutments and foundation of bridges,and puts forward relevant disease treatment and prevention measures , to improve the overall quality and carrying capacity of bridge structure, and extend the service life of the bridges as much as possible, ensure the safety of bridges traffic.  
  关键词: Highway bridge; structure disease; factor; countermeasure  
  下载:         下载 [6 ]  
  vol   1 (1)  :470
 
   259. Cause and Countermeasure of Structure Disease of Bridge
    作者姓名: Ruiwei Fang and Xiuzhi Yang  
  摘要:   With the rapid development of transportation construction in China, bridges with diseases became more and more, bridge reinforcement became a new topics facing the bridge constructors. This paper combined with the practice of bridges construction and maintainence, analyzes the factor of structural formation diseases of beam bridges and arch bridges, particular the disease cause of abutments and foundation of bridges,and puts forward relevant disease treatment and prevention measures , to improve the overall quality and carrying capacity of bridge structure, and extend the service life of the bridges as much as possible, ensure the safety of bridges traffic.  
  关键词: Highway bridge; structure disease; factor; countermeasure  
  下载:         下载 [6 ]  
  vol   1 (1)  :470
 
   260. Cause and Countermeasure of Structure Disease of Bridge
    作者姓名: Ruiwei Fang and Xiuzhi Yang  
  摘要:   With the rapid development of transportation construction in China, bridges with diseases became more and more, bridge reinforcement became a new topics facing the bridge constructors. This paper combined with the practice of bridges construction and maintainence, analyzes the factor of structural formation diseases of beam bridges and arch bridges, particular the disease cause of abutments and foundation of bridges,and puts forward relevant disease treatment and prevention measures , to improve the overall quality and carrying capacity of bridge structure, and extend the service life of the bridges as much as possible, ensure the safety of bridges traffic.  
  关键词: Highway bridge; structure disease; factor; countermeasure  
  下载:         下载 [6 ]  
  vol   1 (1)  :470
 
   261. Conceive of Integrative Transportation of Xia-Zhang-Quan Metropolitan Area
    作者姓名: Boqiang Zhu, Qing Liu, and Zhifeng Li  
  摘要:   We see it is strategically significant to make full use of the unique geographical advantages of Fujian Province and gradually reach the idea of building cross-border cooperation areas by reaching development of cross-strait integration. That is to construct the transportation infrastructure of the urban agglomerations on the west side of the straits between Fuzhou metropolitan area and Xiazhangquan metropolitan area, to shorten their spatial distance, and to form a mutual intermediation transportation network among highway, intercity fast track, intercity rail and passenger dedicated lines of high-speed railway between the two city groups. In this paper, we analyze the present situation of Xiazhangquan metropolitan area and difficulties faced by from the angle of its constitution and strategic position. The paper builds a big traffic pattern of Xiazhangquan metropolitan area, and finally puts forward a tentative plan to achieve the vision of integration of public transport resources through qualitative and quantitative analysis.  
  关键词: Urban agglomeration in the West side of the Straits,Xiamen- Zhangzhou- Quanzhou Metropolitan,Integrated transport  
  下载:         下载 [6 ]  
  vol   1 (1)  :476
 
   262. Conceive of Integrative Transportation of Xia-Zhang-Quan Metropolitan Area
    作者姓名: Boqiang Zhu, Qing Liu, and Zhifeng Li  
  摘要:   We see it is strategically significant to make full use of the unique geographical advantages of Fujian Province and gradually reach the idea of building cross-border cooperation areas by reaching development of cross-strait integration. That is to construct the transportation infrastructure of the urban agglomerations on the west side of the straits between Fuzhou metropolitan area and Xiazhangquan metropolitan area, to shorten their spatial distance, and to form a mutual intermediation transportation network among highway, intercity fast track, intercity rail and passenger dedicated lines of high-speed railway between the two city groups. In this paper, we analyze the present situation of Xiazhangquan metropolitan area and difficulties faced by from the angle of its constitution and strategic position. The paper builds a big traffic pattern of Xiazhangquan metropolitan area, and finally puts forward a tentative plan to achieve the vision of integration of public transport resources through qualitative and quantitative analysis.  
  关键词: Urban agglomeration in the West side of the Straits,Xiamen- Zhangzhou- Quanzhou Metropolitan,Integrated transport  
  下载:         下载 [6 ]  
  vol   1 (1)  :476
 
   263. Conceive of Integrative Transportation of Xia-Zhang-Quan Metropolitan Area
    作者姓名: Boqiang Zhu, Qing Liu, and Zhifeng Li  
  摘要:   We see it is strategically significant to make full use of the unique geographical advantages of Fujian Province and gradually reach the idea of building cross-border cooperation areas by reaching development of cross-strait integration. That is to construct the transportation infrastructure of the urban agglomerations on the west side of the straits between Fuzhou metropolitan area and Xiazhangquan metropolitan area, to shorten their spatial distance, and to form a mutual intermediation transportation network among highway, intercity fast track, intercity rail and passenger dedicated lines of high-speed railway between the two city groups. In this paper, we analyze the present situation of Xiazhangquan metropolitan area and difficulties faced by from the angle of its constitution and strategic position. The paper builds a big traffic pattern of Xiazhangquan metropolitan area, and finally puts forward a tentative plan to achieve the vision of integration of public transport resources through qualitative and quantitative analysis.  
  关键词: Urban agglomeration in the West side of the Straits,Xiamen- Zhangzhou- Quanzhou Metropolitan,Integrated transport  
  下载:         下载 [6 ]  
  vol   1 (1)  :476
 
   264. Conceive of Integrative Transportation of Xia-Zhang-Quan Metropolitan Area
    作者姓名: Boqiang Zhu, Qing Liu, and Zhifeng Li  
  摘要:   We see it is strategically significant to make full use of the unique geographical advantages of Fujian Province and gradually reach the idea of building cross-border cooperation areas by reaching development of cross-strait integration. That is to construct the transportation infrastructure of the urban agglomerations on the west side of the straits between Fuzhou metropolitan area and Xiazhangquan metropolitan area, to shorten their spatial distance, and to form a mutual intermediation transportation network among highway, intercity fast track, intercity rail and passenger dedicated lines of high-speed railway between the two city groups. In this paper, we analyze the present situation of Xiazhangquan metropolitan area and difficulties faced by from the angle of its constitution and strategic position. The paper builds a big traffic pattern of Xiazhangquan metropolitan area, and finally puts forward a tentative plan to achieve the vision of integration of public transport resources through qualitative and quantitative analysis.  
  关键词: Urban agglomeration in the West side of the Straits,Xiamen- Zhangzhou- Quanzhou Metropolitan,Integrated transport  
  下载:         下载 [6 ]  
  vol   1 (1)  :476
 
   265. Research on Strengthening T-Beam Transverse Connection in the Highway Bridge Reinforcement Design
    作者姓名: Liu Yang and Zhida Li  
  摘要:   With the development of highway traffic, the bearing capacity of many old bridges had been unable to meet the operational requirement. Many diseases had occured. The old bridge reinforcement became an urgent problem to solve. This article mainly has studied the commonly used methods on strengthening T beam transverse connection in the reinforcement. According to the disease that the Hekou Bridge T beam transverse connection was weak, this article put forward two ways to reinforce the connection, one is the method to reinforce diaphragm beam,the other is to reinforce bridge pavement to form "composite beams". Analyze the stress and deflection of the two way by the finite element, the value of the "composite beam" method is more smaller, so choose the latter one to do reinforcement. Then analyze the positive effect and negative effect of the " pavement effect ", draw the conclusion that the specific reinforcement method should avoid the negative effect and take some construction methods to form " composite effect".  
  关键词: highway bridges reinforcement; T beam transverse connection; composite beam  
  下载:         下载 [6 ]  
  vol   1 (1)  :482
 
   266. Research on Strengthening T-Beam Transverse Connection in the Highway Bridge Reinforcement Design
    作者姓名: Liu Yang and Zhida Li  
  摘要:   With the development of highway traffic, the bearing capacity of many old bridges had been unable to meet the operational requirement. Many diseases had occured. The old bridge reinforcement became an urgent problem to solve. This article mainly has studied the commonly used methods on strengthening T beam transverse connection in the reinforcement. According to the disease that the Hekou Bridge T beam transverse connection was weak, this article put forward two ways to reinforce the connection, one is the method to reinforce diaphragm beam,the other is to reinforce bridge pavement to form "composite beams". Analyze the stress and deflection of the two way by the finite element, the value of the "composite beam" method is more smaller, so choose the latter one to do reinforcement. Then analyze the positive effect and negative effect of the " pavement effect ", draw the conclusion that the specific reinforcement method should avoid the negative effect and take some construction methods to form " composite effect".  
  关键词: highway bridges reinforcement; T beam transverse connection; composite beam  
  下载:         下载 [6 ]  
  vol   1 (1)  :482
 
   267. Research on Strengthening T-Beam Transverse Connection in the Highway Bridge Reinforcement Design
    作者姓名: Liu Yang and Zhida Li  
  摘要:   With the development of highway traffic, the bearing capacity of many old bridges had been unable to meet the operational requirement. Many diseases had occured. The old bridge reinforcement became an urgent problem to solve. This article mainly has studied the commonly used methods on strengthening T beam transverse connection in the reinforcement. According to the disease that the Hekou Bridge T beam transverse connection was weak, this article put forward two ways to reinforce the connection, one is the method to reinforce diaphragm beam,the other is to reinforce bridge pavement to form "composite beams". Analyze the stress and deflection of the two way by the finite element, the value of the "composite beam" method is more smaller, so choose the latter one to do reinforcement. Then analyze the positive effect and negative effect of the " pavement effect ", draw the conclusion that the specific reinforcement method should avoid the negative effect and take some construction methods to form " composite effect".  
  关键词: highway bridges reinforcement; T beam transverse connection; composite beam  
  下载:         下载 [6 ]  
  vol   1 (1)  :482
 
   268. Research on Strengthening T-Beam Transverse Connection in the Highway Bridge Reinforcement Design
    作者姓名: Liu Yang and Zhida Li  
  摘要:   With the development of highway traffic, the bearing capacity of many old bridges had been unable to meet the operational requirement. Many diseases had occured. The old bridge reinforcement became an urgent problem to solve. This article mainly has studied the commonly used methods on strengthening T beam transverse connection in the reinforcement. According to the disease that the Hekou Bridge T beam transverse connection was weak, this article put forward two ways to reinforce the connection, one is the method to reinforce diaphragm beam,the other is to reinforce bridge pavement to form "composite beams". Analyze the stress and deflection of the two way by the finite element, the value of the "composite beam" method is more smaller, so choose the latter one to do reinforcement. Then analyze the positive effect and negative effect of the " pavement effect ", draw the conclusion that the specific reinforcement method should avoid the negative effect and take some construction methods to form " composite effect".  
  关键词: highway bridges reinforcement; T beam transverse connection; composite beam  
  下载:         下载 [6 ]  
  vol   1 (1)  :482
 
   269. The Case Analysis of Tobacco Distribution Vehicle Scheduling of Hua Zhong Logistics Company
    作者姓名: Ya Xu and Min Wang  
  摘要:   HuaZhong Logistics Company is a big third party logistics enterprise in Wuhan, the existing vehicle scheduling model of tobacco distribution need to improve. This paper makes full use of existing optimization techniques to achieve optimal delivery vehicle scheduling, and puts up with some measures to improve the scheduling mode.  
  关键词: Huazhong Logistics Company;Vehicle Scheduling;Optimization  
  下载:         下载 [6 ]  
  vol   1 (1)  :489
 
   270. The Case Analysis of Tobacco Distribution Vehicle Scheduling of Hua Zhong Logistics Company
    作者姓名: Ya Xu and Min Wang  
  摘要:   HuaZhong Logistics Company is a big third party logistics enterprise in Wuhan, the existing vehicle scheduling model of tobacco distribution need to improve. This paper makes full use of existing optimization techniques to achieve optimal delivery vehicle scheduling, and puts up with some measures to improve the scheduling mode.  
  关键词: Huazhong Logistics Company;Vehicle Scheduling;Optimization  
  下载:         下载 [6 ]  
  vol   1 (1)  :489
 
   271. The Case Analysis of Tobacco Distribution Vehicle Scheduling of Hua Zhong Logistics Company
    作者姓名: Ya Xu and Min Wang  
  摘要:   HuaZhong Logistics Company is a big third party logistics enterprise in Wuhan, the existing vehicle scheduling model of tobacco distribution need to improve. This paper makes full use of existing optimization techniques to achieve optimal delivery vehicle scheduling, and puts up with some measures to improve the scheduling mode.  
  关键词: Huazhong Logistics Company;Vehicle Scheduling;Optimization  
  下载:         下载 [6 ]  
  vol   1 (1)  :489
 
   272. The Case Analysis of Tobacco Distribution Vehicle Scheduling of Hua Zhong Logistics Company
    作者姓名: Ya Xu and Min Wang  
  摘要:   HuaZhong Logistics Company is a big third party logistics enterprise in Wuhan, the existing vehicle scheduling model of tobacco distribution need to improve. This paper makes full use of existing optimization techniques to achieve optimal delivery vehicle scheduling, and puts up with some measures to improve the scheduling mode.  
  关键词: Huazhong Logistics Company;Vehicle Scheduling;Optimization  
  下载:         下载 [6 ]  
  vol   1 (1)  :489
 
   273. Design and Application of Network-level Decision Support System for Urban Road
    作者姓名: Tingting Ding, Lijun Sun, and Zhang Chen  
  摘要:   With the rapid development of road construction, the contradiction between urgent conservation needs and limited conservation funds is becoming more and more prominent. Traditional conservation management model is gradually replaced by the development and application of pavement management system. Relying on the requirement of road management department of Suzhou, the architecture of Network-level Decision Support System for Urban Road (NDSSUR) was constructed firstly. Then a detailed analysis of the most important three parts of the system ― performance evaluation, maintenance decision and performance prediction were carried on. Finally, based on the local dynamic detection data, NDSSUR was applied to evaluate pavement performance, suggest large and medium repair and do a long-term planning for five years within the urban areas of Suzhou. Results output from the program fit the actual condition of the road well.  
  关键词: Decision support system; Performance evaluation; Maintenance decision; Performance prediction  
  下载:         下载 [6 ]  
  vol   1 (1)  :498
 
   274. Design and Application of Network-level Decision Support System for Urban Road
    作者姓名: Tingting Ding, Lijun Sun, and Zhang Chen  
  摘要:   With the rapid development of road construction, the contradiction between urgent conservation needs and limited conservation funds is becoming more and more prominent. Traditional conservation management model is gradually replaced by the development and application of pavement management system. Relying on the requirement of road management department of Suzhou, the architecture of Network-level Decision Support System for Urban Road (NDSSUR) was constructed firstly. Then a detailed analysis of the most important three parts of the system ― performance evaluation, maintenance decision and performance prediction were carried on. Finally, based on the local dynamic detection data, NDSSUR was applied to evaluate pavement performance, suggest large and medium repair and do a long-term planning for five years within the urban areas of Suzhou. Results output from the program fit the actual condition of the road well.  
  关键词: Decision support system; Performance evaluation; Maintenance decision; Performance prediction  
  下载:         下载 [6 ]  
  vol   1 (1)  :498
 
   275. Design and Application of Network-level Decision Support System for Urban Road
    作者姓名: Tingting Ding, Lijun Sun, and Zhang Chen  
  摘要:   With the rapid development of road construction, the contradiction between urgent conservation needs and limited conservation funds is becoming more and more prominent. Traditional conservation management model is gradually replaced by the development and application of pavement management system. Relying on the requirement of road management department of Suzhou, the architecture of Network-level Decision Support System for Urban Road (NDSSUR) was constructed firstly. Then a detailed analysis of the most important three parts of the system ― performance evaluation, maintenance decision and performance prediction were carried on. Finally, based on the local dynamic detection data, NDSSUR was applied to evaluate pavement performance, suggest large and medium repair and do a long-term planning for five years within the urban areas of Suzhou. Results output from the program fit the actual condition of the road well.  
  关键词: Decision support system; Performance evaluation; Maintenance decision; Performance prediction  
  下载:         下载 [6 ]  
  vol   1 (1)  :498
 
   276. Design and Application of Network-level Decision Support System for Urban Road
    作者姓名: Tingting Ding, Lijun Sun, and Zhang Chen  
  摘要:   With the rapid development of road construction, the contradiction between urgent conservation needs and limited conservation funds is becoming more and more prominent. Traditional conservation management model is gradually replaced by the development and application of pavement management system. Relying on the requirement of road management department of Suzhou, the architecture of Network-level Decision Support System for Urban Road (NDSSUR) was constructed firstly. Then a detailed analysis of the most important three parts of the system ― performance evaluation, maintenance decision and performance prediction were carried on. Finally, based on the local dynamic detection data, NDSSUR was applied to evaluate pavement performance, suggest large and medium repair and do a long-term planning for five years within the urban areas of Suzhou. Results output from the program fit the actual condition of the road well.  
  关键词: Decision support system; Performance evaluation; Maintenance decision; Performance prediction  
  下载:         下载 [6 ]  
  vol   1 (1)  :498
 
   277. The Study on Language Variation of Mobile Phone Short Messages (SMS) of University Students in Wuhan District
    作者姓名: Xiaoxi Zheng  
  摘要:   Abstract: Language variation study is the major subject in sociolinguistic discipline, since language is a living thing, it contacts with language varieties and changes. Language variation grows fast and diversely because of the popularization of internet and mobile phone. Since university students have a strong ability to create novel words and accept language variation, there is a survey on mobile phone short messages of university students’, the paper takes sociolinguistic view and combines quantitative analysis to discuss three questions: 1. language features of SMS, such as brevity and short, having meaningful punctuation, using numbers and symbols instead of words and so forth; 2. four types of language variation in SMS and the influence of dialect; 3. some approaches of social factors in SMS as well.  
  关键词: language variation; code-switching; SMS; language planning  
  下载:         下载 [6 ]  
  vol   1 (1)  :505
 
   278. The Study on Language Variation of Mobile Phone Short Messages (SMS) of University Students in Wuhan District
    作者姓名: Xiaoxi Zheng  
  摘要:   Abstract: Language variation study is the major subject in sociolinguistic discipline, since language is a living thing, it contacts with language varieties and changes. Language variation grows fast and diversely because of the popularization of internet and mobile phone. Since university students have a strong ability to create novel words and accept language variation, there is a survey on mobile phone short messages of university students’, the paper takes sociolinguistic view and combines quantitative analysis to discuss three questions: 1. language features of SMS, such as brevity and short, having meaningful punctuation, using numbers and symbols instead of words and so forth; 2. four types of language variation in SMS and the influence of dialect; 3. some approaches of social factors in SMS as well.  
  关键词: language variation; code-switching; SMS; language planning  
  下载:         下载 [6 ]  
  vol   1 (1)  :505
 
   279. The Study on Language Variation of Mobile Phone Short Messages (SMS) of University Students in Wuhan District
    作者姓名: Xiaoxi Zheng  
  摘要:   Abstract: Language variation study is the major subject in sociolinguistic discipline, since language is a living thing, it contacts with language varieties and changes. Language variation grows fast and diversely because of the popularization of internet and mobile phone. Since university students have a strong ability to create novel words and accept language variation, there is a survey on mobile phone short messages of university students’, the paper takes sociolinguistic view and combines quantitative analysis to discuss three questions: 1. language features of SMS, such as brevity and short, having meaningful punctuation, using numbers and symbols instead of words and so forth; 2. four types of language variation in SMS and the influence of dialect; 3. some approaches of social factors in SMS as well.  
  关键词: language variation; code-switching; SMS; language planning  
  下载:         下载 [6 ]  
  vol   1 (1)  :505
 
   280. The Study on Language Variation of Mobile Phone Short Messages (SMS) of University Students in Wuhan District
    作者姓名: Xiaoxi Zheng  
  摘要:   Abstract: Language variation study is the major subject in sociolinguistic discipline, since language is a living thing, it contacts with language varieties and changes. Language variation grows fast and diversely because of the popularization of internet and mobile phone. Since university students have a strong ability to create novel words and accept language variation, there is a survey on mobile phone short messages of university students’, the paper takes sociolinguistic view and combines quantitative analysis to discuss three questions: 1. language features of SMS, such as brevity and short, having meaningful punctuation, using numbers and symbols instead of words and so forth; 2. four types of language variation in SMS and the influence of dialect; 3. some approaches of social factors in SMS as well.  
  关键词: language variation; code-switching; SMS; language planning  
  下载:         下载 [6 ]  
  vol   1 (1)  :505
 
   281. Research on the Allocation of Passenger Transport Structure in Transport Channel Based on Fuzzy Comprehensive Evaluation
    作者姓名: Xiaonian Sun, Yanhong Li, and Zhenzhou Yuan  
  摘要:   Proceeding from the internal coordination and the external adaptation of the channel’s passenger transport structure, this paper establishes four indexes: fitness, equilibrium coefficient of comprehensive supply, transport efficiency, sustainable development level, and then defines their value range according to the actual situation to establish a membership function of each evaluation grade corresponding to each indicator, thereby constructing a fuzzy comprehensive evaluation model for the passenger transport structure of the comprehensive channel. Besides, further research is also conducted to study how to determine the fuzzy judgment matrix and weight. Finally, the Beijing-Shanghai channel is selected to carry out an empirical research and verify the reliability and practicality of the model, which improves the analysis theory and method of the passenger transport system of the comprehensive transportation channel.  
  关键词: Traffic and transportation;Comprehensive transportation corridor;Passenger structure;Fuzzy comprehensive evaluation  
  下载:         下载 [6 ]  
  vol   1 (1)  :512
 
   282. Research on the Allocation of Passenger Transport Structure in Transport Channel Based on Fuzzy Comprehensive Evaluation
    作者姓名: Xiaonian Sun, Yanhong Li, and Zhenzhou Yuan  
  摘要:   Proceeding from the internal coordination and the external adaptation of the channel’s passenger transport structure, this paper establishes four indexes: fitness, equilibrium coefficient of comprehensive supply, transport efficiency, sustainable development level, and then defines their value range according to the actual situation to establish a membership function of each evaluation grade corresponding to each indicator, thereby constructing a fuzzy comprehensive evaluation model for the passenger transport structure of the comprehensive channel. Besides, further research is also conducted to study how to determine the fuzzy judgment matrix and weight. Finally, the Beijing-Shanghai channel is selected to carry out an empirical research and verify the reliability and practicality of the model, which improves the analysis theory and method of the passenger transport system of the comprehensive transportation channel.  
  关键词: Traffic and transportation;Comprehensive transportation corridor;Passenger structure;Fuzzy comprehensive evaluation  
  下载:         下载 [6 ]  
  vol   1 (1)  :512
 
   283. Research on the Allocation of Passenger Transport Structure in Transport Channel Based on Fuzzy Comprehensive Evaluation
    作者姓名: Xiaonian Sun, Yanhong Li, and Zhenzhou Yuan  
  摘要:   Proceeding from the internal coordination and the external adaptation of the channel’s passenger transport structure, this paper establishes four indexes: fitness, equilibrium coefficient of comprehensive supply, transport efficiency, sustainable development level, and then defines their value range according to the actual situation to establish a membership function of each evaluation grade corresponding to each indicator, thereby constructing a fuzzy comprehensive evaluation model for the passenger transport structure of the comprehensive channel. Besides, further research is also conducted to study how to determine the fuzzy judgment matrix and weight. Finally, the Beijing-Shanghai channel is selected to carry out an empirical research and verify the reliability and practicality of the model, which improves the analysis theory and method of the passenger transport system of the comprehensive transportation channel.  
  关键词: Traffic and transportation;Comprehensive transportation corridor;Passenger structure;Fuzzy comprehensive evaluation  
  下载:         下载 [6 ]  
  vol   1 (1)  :512
 
   284. Research on the Allocation of Passenger Transport Structure in Transport Channel Based on Fuzzy Comprehensive Evaluation
    作者姓名: Xiaonian Sun, Yanhong Li, and Zhenzhou Yuan  
  摘要:   Proceeding from the internal coordination and the external adaptation of the channel’s passenger transport structure, this paper establishes four indexes: fitness, equilibrium coefficient of comprehensive supply, transport efficiency, sustainable development level, and then defines their value range according to the actual situation to establish a membership function of each evaluation grade corresponding to each indicator, thereby constructing a fuzzy comprehensive evaluation model for the passenger transport structure of the comprehensive channel. Besides, further research is also conducted to study how to determine the fuzzy judgment matrix and weight. Finally, the Beijing-Shanghai channel is selected to carry out an empirical research and verify the reliability and practicality of the model, which improves the analysis theory and method of the passenger transport system of the comprehensive transportation channel.  
  关键词: Traffic and transportation;Comprehensive transportation corridor;Passenger structure;Fuzzy comprehensive evaluation  
  下载:         下载 [6 ]  
  vol   1 (1)  :512
 
   285. Analysis on Transfer from Electric Bike to Public Transportation Based on SP Data and RP Data
    作者姓名: Jiajia Liu, Hongzhi Guan, Huanmei Qin, Yunqiang Xue, and Yazhou Ni  
  摘要:   A serious competition existed between electric bike (e-bike) and bus in medium and short trip. In order to ensure a safe, orderly and smooth flow of city traffic, this paper researched on the travelers of e-bike’s intention and boundary conditions for the transfer to public transport. The socio-economic characteristics, traveler trip characteristics and potential trip model choices of e-bike travelers were investigated by questionnaire. Based on the questionnaire data, the influence factors such as bus fares, bus travel time, management policies and care factors on the travel model choice were analyzed to obtain the regularity of the behavior of the users. RP model, SP model,and the RP and SP data fusion model for e-bike travel choice were established respectively based on Binary Logit Model. Finally, sensitivity analysis of the factors was performed. Jinan had been chosen as a case study. The results show that: (1) the parametric test veracity of the SP and RP data fusion model is satisfied. (2) people on the sensitivity of the ticket price level is far outweigh the sensitivity of the degree of time, nearly 10% of the e-bike trip to the bus transfer can be achieved by reducing fares. (3) Implementing management policies, reducing bus waiting time, improving the efficiency of public transport and setting free BRT transfer points can promote people to take bus instead of e-bike.  
  关键词: e-bike; travel choice model; RP and SP fusion model; public transit.  
  下载:         下载 [6 ]  
  vol   1 (1)  :527
 
   286. Analysis on Transfer from Electric Bike to Public Transportation Based on SP Data and RP Data
    作者姓名: Jiajia Liu, Hongzhi Guan, Huanmei Qin, Yunqiang Xue, and Yazhou Ni  
  摘要:   A serious competition existed between electric bike (e-bike) and bus in medium and short trip. In order to ensure a safe, orderly and smooth flow of city traffic, this paper researched on the travelers of e-bike’s intention and boundary conditions for the transfer to public transport. The socio-economic characteristics, traveler trip characteristics and potential trip model choices of e-bike travelers were investigated by questionnaire. Based on the questionnaire data, the influence factors such as bus fares, bus travel time, management policies and care factors on the travel model choice were analyzed to obtain the regularity of the behavior of the users. RP model, SP model,and the RP and SP data fusion model for e-bike travel choice were established respectively based on Binary Logit Model. Finally, sensitivity analysis of the factors was performed. Jinan had been chosen as a case study. The results show that: (1) the parametric test veracity of the SP and RP data fusion model is satisfied. (2) people on the sensitivity of the ticket price level is far outweigh the sensitivity of the degree of time, nearly 10% of the e-bike trip to the bus transfer can be achieved by reducing fares. (3) Implementing management policies, reducing bus waiting time, improving the efficiency of public transport and setting free BRT transfer points can promote people to take bus instead of e-bike.  
  关键词: e-bike; travel choice model; RP and SP fusion model; public transit.  
  下载:         下载 [6 ]  
  vol   1 (1)  :527
 
   287. Analysis on Transfer from Electric Bike to Public Transportation Based on SP Data and RP Data
    作者姓名: Jiajia Liu, Hongzhi Guan, Huanmei Qin, Yunqiang Xue, and Yazhou Ni  
  摘要:   A serious competition existed between electric bike (e-bike) and bus in medium and short trip. In order to ensure a safe, orderly and smooth flow of city traffic, this paper researched on the travelers of e-bike’s intention and boundary conditions for the transfer to public transport. The socio-economic characteristics, traveler trip characteristics and potential trip model choices of e-bike travelers were investigated by questionnaire. Based on the questionnaire data, the influence factors such as bus fares, bus travel time, management policies and care factors on the travel model choice were analyzed to obtain the regularity of the behavior of the users. RP model, SP model,and the RP and SP data fusion model for e-bike travel choice were established respectively based on Binary Logit Model. Finally, sensitivity analysis of the factors was performed. Jinan had been chosen as a case study. The results show that: (1) the parametric test veracity of the SP and RP data fusion model is satisfied. (2) people on the sensitivity of the ticket price level is far outweigh the sensitivity of the degree of time, nearly 10% of the e-bike trip to the bus transfer can be achieved by reducing fares. (3) Implementing management policies, reducing bus waiting time, improving the efficiency of public transport and setting free BRT transfer points can promote people to take bus instead of e-bike.  
  关键词: e-bike; travel choice model; RP and SP fusion model; public transit.  
  下载:         下载 [6 ]  
  vol   1 (1)  :527
 
   288. Analysis on Transfer from Electric Bike to Public Transportation Based on SP Data and RP Data
    作者姓名: Jiajia Liu, Hongzhi Guan, Huanmei Qin, Yunqiang Xue, and Yazhou Ni  
  摘要:   A serious competition existed between electric bike (e-bike) and bus in medium and short trip. In order to ensure a safe, orderly and smooth flow of city traffic, this paper researched on the travelers of e-bike’s intention and boundary conditions for the transfer to public transport. The socio-economic characteristics, traveler trip characteristics and potential trip model choices of e-bike travelers were investigated by questionnaire. Based on the questionnaire data, the influence factors such as bus fares, bus travel time, management policies and care factors on the travel model choice were analyzed to obtain the regularity of the behavior of the users. RP model, SP model,and the RP and SP data fusion model for e-bike travel choice were established respectively based on Binary Logit Model. Finally, sensitivity analysis of the factors was performed. Jinan had been chosen as a case study. The results show that: (1) the parametric test veracity of the SP and RP data fusion model is satisfied. (2) people on the sensitivity of the ticket price level is far outweigh the sensitivity of the degree of time, nearly 10% of the e-bike trip to the bus transfer can be achieved by reducing fares. (3) Implementing management policies, reducing bus waiting time, improving the efficiency of public transport and setting free BRT transfer points can promote people to take bus instead of e-bike.  
  关键词: e-bike; travel choice model; RP and SP fusion model; public transit.  
  下载:         下载 [6 ]  
  vol   1 (1)  :527
 
   289. Research of the Test for Complete-Vehicle Emission of the Bus by Chassis-Dynamometer
    作者姓名: Shuangxi Liu, Zhang Gao, Huazhi Mai, and Chunling Wu  
  摘要:   For the performance evaluation of heavy vehicle emissions and fuel consumption, based on Heavy-Duty Chassis-dynamometer and constant volume sample(CVS) system, this paper analyzes the influence of different cycles on emissions. The NOX、HC、CO、CO2 mileage emission factors and Hundred kilometers fuel consumption of china city bus cycle(CCBC) are 1.91 times, 36%,1.42 times,1.33 times,1.27 times of china World Transient Vehicle Cycle(C-WTVC). Research the contribution of the different operating modes of different cycles including accelerate、decelerate、constant speed and idle. Contribution rates of accelerating models to gaseous pollutants are the highest. The contribution rates of CO and NOX is up to 67.1% and 65.4%. Collect the operating modes and conditions of the engine of test vehicle and confirm the working range of different cycles, The test contrasts the difference of the engine’s working range of the emission regulations cycles and actual travel cycles. The conclusion is that the emission regulations cycle can′t reflect the complete-vehicle condition in use.  
  关键词: Heavy- Duty chassis dynamometer, complete-vehicle emission, testing cycle, engine′s operating modes  
  下载:         下载 [6 ]  
  vol   1 (1)  :536
 
   290. Research of the Test for Complete-Vehicle Emission of the Bus by Chassis-Dynamometer
    作者姓名: Shuangxi Liu, Zhang Gao, Huazhi Mai, and Chunling Wu  
  摘要:   For the performance evaluation of heavy vehicle emissions and fuel consumption, based on Heavy-Duty Chassis-dynamometer and constant volume sample(CVS) system, this paper analyzes the influence of different cycles on emissions. The NOX、HC、CO、CO2 mileage emission factors and Hundred kilometers fuel consumption of china city bus cycle(CCBC) are 1.91 times, 36%,1.42 times,1.33 times,1.27 times of china World Transient Vehicle Cycle(C-WTVC). Research the contribution of the different operating modes of different cycles including accelerate、decelerate、constant speed and idle. Contribution rates of accelerating models to gaseous pollutants are the highest. The contribution rates of CO and NOX is up to 67.1% and 65.4%. Collect the operating modes and conditions of the engine of test vehicle and confirm the working range of different cycles, The test contrasts the difference of the engine’s working range of the emission regulations cycles and actual travel cycles. The conclusion is that the emission regulations cycle can′t reflect the complete-vehicle condition in use.  
  关键词: Heavy- Duty chassis dynamometer, complete-vehicle emission, testing cycle, engine′s operating modes  
  下载:         下载 [6 ]  
  vol   1 (1)  :536
 
   291. Research of the Test for Complete-Vehicle Emission of the Bus by Chassis-Dynamometer
    作者姓名: Shuangxi Liu, Zhang Gao, Huazhi Mai, and Chunling Wu  
  摘要:   For the performance evaluation of heavy vehicle emissions and fuel consumption, based on Heavy-Duty Chassis-dynamometer and constant volume sample(CVS) system, this paper analyzes the influence of different cycles on emissions. The NOX、HC、CO、CO2 mileage emission factors and Hundred kilometers fuel consumption of china city bus cycle(CCBC) are 1.91 times, 36%,1.42 times,1.33 times,1.27 times of china World Transient Vehicle Cycle(C-WTVC). Research the contribution of the different operating modes of different cycles including accelerate、decelerate、constant speed and idle. Contribution rates of accelerating models to gaseous pollutants are the highest. The contribution rates of CO and NOX is up to 67.1% and 65.4%. Collect the operating modes and conditions of the engine of test vehicle and confirm the working range of different cycles, The test contrasts the difference of the engine’s working range of the emission regulations cycles and actual travel cycles. The conclusion is that the emission regulations cycle can′t reflect the complete-vehicle condition in use.  
  关键词: Heavy- Duty chassis dynamometer, complete-vehicle emission, testing cycle, engine′s operating modes  
  下载:         下载 [6 ]  
  vol   1 (1)  :536
 
   292. Research of the Test for Complete-Vehicle Emission of the Bus by Chassis-Dynamometer
    作者姓名: Shuangxi Liu, Zhang Gao, Huazhi Mai, and Chunling Wu  
  摘要:   For the performance evaluation of heavy vehicle emissions and fuel consumption, based on Heavy-Duty Chassis-dynamometer and constant volume sample(CVS) system, this paper analyzes the influence of different cycles on emissions. The NOX、HC、CO、CO2 mileage emission factors and Hundred kilometers fuel consumption of china city bus cycle(CCBC) are 1.91 times, 36%,1.42 times,1.33 times,1.27 times of china World Transient Vehicle Cycle(C-WTVC). Research the contribution of the different operating modes of different cycles including accelerate、decelerate、constant speed and idle. Contribution rates of accelerating models to gaseous pollutants are the highest. The contribution rates of CO and NOX is up to 67.1% and 65.4%. Collect the operating modes and conditions of the engine of test vehicle and confirm the working range of different cycles, The test contrasts the difference of the engine’s working range of the emission regulations cycles and actual travel cycles. The conclusion is that the emission regulations cycle can′t reflect the complete-vehicle condition in use.  
  关键词: Heavy- Duty chassis dynamometer, complete-vehicle emission, testing cycle, engine′s operating modes  
  下载:         下载 [6 ]  
  vol   1 (1)  :536
 
   293. Analysis of Road Traffic Accident Caused by Human Error
    作者姓名: Yu-Hui Ren  
  摘要:   Through the statistics analysis of serious road traffic accidents over recent years, the paper concludes that the human error is the major factor causing road traffic accidents. It establishes a cognitive response model to analyze the factor of human error in the traffic system that consists of human, vehicle, road and environment and puts forward measures to prevent road traffic accidents.  
  关键词: Road Traffic; Accident; Human Error  
  下载:         下载 [6 ]  
  vol   1 (1)  :547
 
   294. Analysis of Road Traffic Accident Caused by Human Error
    作者姓名: Yu-Hui Ren  
  摘要:   Through the statistics analysis of serious road traffic accidents over recent years, the paper concludes that the human error is the major factor causing road traffic accidents. It establishes a cognitive response model to analyze the factor of human error in the traffic system that consists of human, vehicle, road and environment and puts forward measures to prevent road traffic accidents.  
  关键词: Road Traffic; Accident; Human Error  
  下载:         下载 [6 ]  
  vol   1 (1)  :547
 
   295. Analysis of Road Traffic Accident Caused by Human Error
    作者姓名: Yu-Hui Ren  
  摘要:   Through the statistics analysis of serious road traffic accidents over recent years, the paper concludes that the human error is the major factor causing road traffic accidents. It establishes a cognitive response model to analyze the factor of human error in the traffic system that consists of human, vehicle, road and environment and puts forward measures to prevent road traffic accidents.  
  关键词: Road Traffic; Accident; Human Error  
  下载:         下载 [6 ]  
  vol   1 (1)  :547
 
   296. Analysis of Road Traffic Accident Caused by Human Error
    作者姓名: Yu-Hui Ren  
  摘要:   Through the statistics analysis of serious road traffic accidents over recent years, the paper concludes that the human error is the major factor causing road traffic accidents. It establishes a cognitive response model to analyze the factor of human error in the traffic system that consists of human, vehicle, road and environment and puts forward measures to prevent road traffic accidents.  
  关键词: Road Traffic; Accident; Human Error  
  下载:         下载 [6 ]  
  vol   1 (1)  :547
 
   297. Real-Time Monitoring Technology of Material Transportation to Dam and Its Application in Core Rockfill Dam
    作者姓名: Bo Cui and Rui Wang  
  摘要:   Core Rockfill dam is characterized by huge filling volume, multiple material sources and high strength of transportation to dam, which leads to a higher demand on organizational arrangement of transportation system, as well as on control of material sources on the construction site. Aiming at characteristics and main points of control over the process of materials transportation to dam, he real-time monitoring method of the whole process of materials transportation to dam for rockfill dam is proposed based on monitoring indexes and control criterion using Global Positioning System (GPS), General Packet Radio Service (GPRS) and Personal Digital Assistant (PDA) technology. Real-time automatic collection technology of the transportation process information and calculation and analysis method of transportation parameters are also proposed. Application in practical engineering shows that mismatching loading or unloading of dump trucks can be discovered in time, wrong filling of dam materials can be avoided using the technology. It can also be used to calculate traffic density and strength of transportation to dam. The technology is an innovation of construction management method for rockfill dam, which has provided strong support for construction quality management and organizational arrangement.  
  关键词: core rockfill dam; materials transportation to dam; process control; real-time monitoring  
  下载:         下载 [6 ]  
  vol   1 (1)  :553
 
   298. Real-Time Monitoring Technology of Material Transportation to Dam and Its Application in Core Rockfill Dam
    作者姓名: Bo Cui and Rui Wang  
  摘要:   Core Rockfill dam is characterized by huge filling volume, multiple material sources and high strength of transportation to dam, which leads to a higher demand on organizational arrangement of transportation system, as well as on control of material sources on the construction site. Aiming at characteristics and main points of control over the process of materials transportation to dam, he real-time monitoring method of the whole process of materials transportation to dam for rockfill dam is proposed based on monitoring indexes and control criterion using Global Positioning System (GPS), General Packet Radio Service (GPRS) and Personal Digital Assistant (PDA) technology. Real-time automatic collection technology of the transportation process information and calculation and analysis method of transportation parameters are also proposed. Application in practical engineering shows that mismatching loading or unloading of dump trucks can be discovered in time, wrong filling of dam materials can be avoided using the technology. It can also be used to calculate traffic density and strength of transportation to dam. The technology is an innovation of construction management method for rockfill dam, which has provided strong support for construction quality management and organizational arrangement.  
  关键词: core rockfill dam; materials transportation to dam; process control; real-time monitoring  
  下载:         下载 [6 ]  
  vol   1 (1)  :553
 
   299. Real-Time Monitoring Technology of Material Transportation to Dam and Its Application in Core Rockfill Dam
    作者姓名: Bo Cui and Rui Wang  
  摘要:   Core Rockfill dam is characterized by huge filling volume, multiple material sources and high strength of transportation to dam, which leads to a higher demand on organizational arrangement of transportation system, as well as on control of material sources on the construction site. Aiming at characteristics and main points of control over the process of materials transportation to dam, he real-time monitoring method of the whole process of materials transportation to dam for rockfill dam is proposed based on monitoring indexes and control criterion using Global Positioning System (GPS), General Packet Radio Service (GPRS) and Personal Digital Assistant (PDA) technology. Real-time automatic collection technology of the transportation process information and calculation and analysis method of transportation parameters are also proposed. Application in practical engineering shows that mismatching loading or unloading of dump trucks can be discovered in time, wrong filling of dam materials can be avoided using the technology. It can also be used to calculate traffic density and strength of transportation to dam. The technology is an innovation of construction management method for rockfill dam, which has provided strong support for construction quality management and organizational arrangement.  
  关键词: core rockfill dam; materials transportation to dam; process control; real-time monitoring  
  下载:         下载 [6 ]  
  vol   1 (1)  :553
 
   300. Real-Time Monitoring Technology of Material Transportation to Dam and Its Application in Core Rockfill Dam
    作者姓名: Bo Cui and Rui Wang  
  摘要:   Core Rockfill dam is characterized by huge filling volume, multiple material sources and high strength of transportation to dam, which leads to a higher demand on organizational arrangement of transportation system, as well as on control of material sources on the construction site. Aiming at characteristics and main points of control over the process of materials transportation to dam, he real-time monitoring method of the whole process of materials transportation to dam for rockfill dam is proposed based on monitoring indexes and control criterion using Global Positioning System (GPS), General Packet Radio Service (GPRS) and Personal Digital Assistant (PDA) technology. Real-time automatic collection technology of the transportation process information and calculation and analysis method of transportation parameters are also proposed. Application in practical engineering shows that mismatching loading or unloading of dump trucks can be discovered in time, wrong filling of dam materials can be avoided using the technology. It can also be used to calculate traffic density and strength of transportation to dam. The technology is an innovation of construction management method for rockfill dam, which has provided strong support for construction quality management and organizational arrangement.  
  关键词: core rockfill dam; materials transportation to dam; process control; real-time monitoring  
  下载:         下载 [6 ]  
  vol   1 (1)  :553
 
   301. Analysis of Energy Utilization of a Diesel Engine
    作者姓名: Zhimin Yao and Zuoqin Qian  
  摘要:   there are two methods evaluating the energy utilization system: energy balance analysis and exergy analysis. Energy balance analysis is to study the amount of energy conversion, transmission, utilization and losses, and also to determine the energy efficiency of a system or device. Nevertheless, exergy analysis is to judge the quality of different energies, such as high quality energy and low grade energy, to make full use of it and avoid wasting. In this paper, the simulation of working process on a middle-speed diesel engine is performed. With this simulation, the energy utilization is evaluated by the above-mentioned two methods.  
  关键词: Diesel engine; energy utilization; energy balance analysis; exergy analysis;  
  下载:         下载 [6 ]  
  vol   1 (1)  :558
 
   302. Analysis of Energy Utilization of a Diesel Engine
    作者姓名: Zhimin Yao and Zuoqin Qian  
  摘要:   there are two methods evaluating the energy utilization system: energy balance analysis and exergy analysis. Energy balance analysis is to study the amount of energy conversion, transmission, utilization and losses, and also to determine the energy efficiency of a system or device. Nevertheless, exergy analysis is to judge the quality of different energies, such as high quality energy and low grade energy, to make full use of it and avoid wasting. In this paper, the simulation of working process on a middle-speed diesel engine is performed. With this simulation, the energy utilization is evaluated by the above-mentioned two methods.  
  关键词: Diesel engine; energy utilization; energy balance analysis; exergy analysis;  
  下载:         下载 [6 ]  
  vol   1 (1)  :558
 
   303. Analysis of Energy Utilization of a Diesel Engine
    作者姓名: Zhimin Yao and Zuoqin Qian  
  摘要:   there are two methods evaluating the energy utilization system: energy balance analysis and exergy analysis. Energy balance analysis is to study the amount of energy conversion, transmission, utilization and losses, and also to determine the energy efficiency of a system or device. Nevertheless, exergy analysis is to judge the quality of different energies, such as high quality energy and low grade energy, to make full use of it and avoid wasting. In this paper, the simulation of working process on a middle-speed diesel engine is performed. With this simulation, the energy utilization is evaluated by the above-mentioned two methods.  
  关键词: Diesel engine; energy utilization; energy balance analysis; exergy analysis;  
  下载:         下载 [6 ]  
  vol   1 (1)  :558
 
   304. Analysis of Energy Utilization of a Diesel Engine
    作者姓名: Zhimin Yao and Zuoqin Qian  
  摘要:   there are two methods evaluating the energy utilization system: energy balance analysis and exergy analysis. Energy balance analysis is to study the amount of energy conversion, transmission, utilization and losses, and also to determine the energy efficiency of a system or device. Nevertheless, exergy analysis is to judge the quality of different energies, such as high quality energy and low grade energy, to make full use of it and avoid wasting. In this paper, the simulation of working process on a middle-speed diesel engine is performed. With this simulation, the energy utilization is evaluated by the above-mentioned two methods.  
  关键词: Diesel engine; energy utilization; energy balance analysis; exergy analysis;  
  下载:         下载 [6 ]  
  vol   1 (1)  :558
 
   305. Effect of Traffic Volume on Headways at a Single-Lane Roundabout Based on VISSIM Simulation
    作者姓名: Zhaowei Qu, Yuzhou Duan, Xianmin Song, Yan Xing, and Tingting Chai  
  摘要:   With the increasing of urban congestion,as important nodes in the urban traffic network, scholars at home and abroad pay more attentions to roundabouts in recent years. A large number of researches about roundabouts have been done such as capacity and security. And headway, a significant traffic flow parameter, is also studied by some researchers. However, due to the constraints in geometric condition of roundabout and acquisition equipment, it is difficult to obtain the continuous headway data in distinct locations. By means of VISSIM, a single-lane roundabout is built in this paper. Considering the geometric characteristics of the roundabout, some basic parameters of driver behavior in the simulation software are calibrated. Then simulation experiments under different traffic conditions at four collection points near a approach are did, the results are as follows: The distributions are described in different locations and traffic conditions, and the PDF distributions are given visually with the help of kernel density estimation method, which show that it has a distinct headway distribution characteristics with the difference of traffic volumes and collection locations. Then the average time headway values are analyzed, which indicates a decreasing trend with the increase of traffic flow. And a fitting analysis is made between AHV and traffic volumes, and the results show that it meets a quadratic nonlinear relationship, while R2 and RMSE prove that it has a good fitting effect. This paper proves the practicality of VISSIM in roundabout study, also discuss the relationship between traffic volume and headway, which provides a beneficial trial for roundabout research.  
  关键词: Roundabout; Time headway; Traffic Volume; VISSIM Simulation  
  下载:         下载 [7 ]  
  vol   1 (1)  :565
 
   306. Effect of Traffic Volume on Headways at a Single-Lane Roundabout Based on VISSIM Simulation
    作者姓名: Zhaowei Qu, Yuzhou Duan, Xianmin Song, Yan Xing, and Tingting Chai  
  摘要:   With the increasing of urban congestion,as important nodes in the urban traffic network, scholars at home and abroad pay more attentions to roundabouts in recent years. A large number of researches about roundabouts have been done such as capacity and security. And headway, a significant traffic flow parameter, is also studied by some researchers. However, due to the constraints in geometric condition of roundabout and acquisition equipment, it is difficult to obtain the continuous headway data in distinct locations. By means of VISSIM, a single-lane roundabout is built in this paper. Considering the geometric characteristics of the roundabout, some basic parameters of driver behavior in the simulation software are calibrated. Then simulation experiments under different traffic conditions at four collection points near a approach are did, the results are as follows: The distributions are described in different locations and traffic conditions, and the PDF distributions are given visually with the help of kernel density estimation method, which show that it has a distinct headway distribution characteristics with the difference of traffic volumes and collection locations. Then the average time headway values are analyzed, which indicates a decreasing trend with the increase of traffic flow. And a fitting analysis is made between AHV and traffic volumes, and the results show that it meets a quadratic nonlinear relationship, while R2 and RMSE prove that it has a good fitting effect. This paper proves the practicality of VISSIM in roundabout study, also discuss the relationship between traffic volume and headway, which provides a beneficial trial for roundabout research.  
  关键词: Roundabout; Time headway; Traffic Volume; VISSIM Simulation  
  下载:         下载 [7 ]  
  vol   1 (1)  :565
 
   307. Effect of Traffic Volume on Headways at a Single-Lane Roundabout Based on VISSIM Simulation
    作者姓名: Zhaowei Qu, Yuzhou Duan, Xianmin Song, Yan Xing, and Tingting Chai  
  摘要:   With the increasing of urban congestion,as important nodes in the urban traffic network, scholars at home and abroad pay more attentions to roundabouts in recent years. A large number of researches about roundabouts have been done such as capacity and security. And headway, a significant traffic flow parameter, is also studied by some researchers. However, due to the constraints in geometric condition of roundabout and acquisition equipment, it is difficult to obtain the continuous headway data in distinct locations. By means of VISSIM, a single-lane roundabout is built in this paper. Considering the geometric characteristics of the roundabout, some basic parameters of driver behavior in the simulation software are calibrated. Then simulation experiments under different traffic conditions at four collection points near a approach are did, the results are as follows: The distributions are described in different locations and traffic conditions, and the PDF distributions are given visually with the help of kernel density estimation method, which show that it has a distinct headway distribution characteristics with the difference of traffic volumes and collection locations. Then the average time headway values are analyzed, which indicates a decreasing trend with the increase of traffic flow. And a fitting analysis is made between AHV and traffic volumes, and the results show that it meets a quadratic nonlinear relationship, while R2 and RMSE prove that it has a good fitting effect. This paper proves the practicality of VISSIM in roundabout study, also discuss the relationship between traffic volume and headway, which provides a beneficial trial for roundabout research.  
  关键词: Roundabout; Time headway; Traffic Volume; VISSIM Simulation  
  下载:         下载 [7 ]  
  vol   1 (1)  :565
 
   308. Effect of Traffic Volume on Headways at a Single-Lane Roundabout Based on VISSIM Simulation
    作者姓名: Zhaowei Qu, Yuzhou Duan, Xianmin Song, Yan Xing, and Tingting Chai  
  摘要:   With the increasing of urban congestion,as important nodes in the urban traffic network, scholars at home and abroad pay more attentions to roundabouts in recent years. A large number of researches about roundabouts have been done such as capacity and security. And headway, a significant traffic flow parameter, is also studied by some researchers. However, due to the constraints in geometric condition of roundabout and acquisition equipment, it is difficult to obtain the continuous headway data in distinct locations. By means of VISSIM, a single-lane roundabout is built in this paper. Considering the geometric characteristics of the roundabout, some basic parameters of driver behavior in the simulation software are calibrated. Then simulation experiments under different traffic conditions at four collection points near a approach are did, the results are as follows: The distributions are described in different locations and traffic conditions, and the PDF distributions are given visually with the help of kernel density estimation method, which show that it has a distinct headway distribution characteristics with the difference of traffic volumes and collection locations. Then the average time headway values are analyzed, which indicates a decreasing trend with the increase of traffic flow. And a fitting analysis is made between AHV and traffic volumes, and the results show that it meets a quadratic nonlinear relationship, while R2 and RMSE prove that it has a good fitting effect. This paper proves the practicality of VISSIM in roundabout study, also discuss the relationship between traffic volume and headway, which provides a beneficial trial for roundabout research.  
  关键词: Roundabout; Time headway; Traffic Volume; VISSIM Simulation  
  下载:         下载 [7 ]  
  vol   1 (1)  :565
 
   309. Analysis of Land Use Extraction through Morphological Analysis Using Geographic and Remotely Sensed Data
    作者姓名: Seyed Ahad Beykaei, Ming Zhong, and Yun Zhang  
  摘要:   Lack of detailed land use (LU) information and of efficient data gathering methods have made modeling of urban systems difficult. This study aims to develop a hybrid RS (remote sensing)/GI (geographic information) system in order to extract residential LUs from very high resolution (VHR) remotely sensed imagery. Land cover information extracted from remote sensing and several types of geographic data from the study area, City of Fredericton, Canada, are fused into the residential LU extraction expert system to examine correlation/association rules at the building-level. Morphological analysis at the building-level is used through a stepwise binary logistic regression model to provide a set of multi-dimensional indicators for extracting the residential buildings. In this regards, sets of morphological properties derived from geographic vector and remotely sensed data are used in a binary regression model. LU classification from the morphological analysis results in an overall accuracy of 93.2% for extracting residential buildings. It should be noted that equipped with such a powerful LU data collection tool and detailed LU data, urban planners/modelers can more reliably and precisely predict economic interactions, activity locations, space and housing developments, business expansion, and trip patterns.  
  关键词: Land Use Extraction, Morphological Analysis, VHR imagery  
  下载:         下载 [6 ]  
  vol   1 (1)  :576
 
   310. Analysis of Land Use Extraction through Morphological Analysis Using Geographic and Remotely Sensed Data
    作者姓名: Seyed Ahad Beykaei, Ming Zhong, and Yun Zhang  
  摘要:   Lack of detailed land use (LU) information and of efficient data gathering methods have made modeling of urban systems difficult. This study aims to develop a hybrid RS (remote sensing)/GI (geographic information) system in order to extract residential LUs from very high resolution (VHR) remotely sensed imagery. Land cover information extracted from remote sensing and several types of geographic data from the study area, City of Fredericton, Canada, are fused into the residential LU extraction expert system to examine correlation/association rules at the building-level. Morphological analysis at the building-level is used through a stepwise binary logistic regression model to provide a set of multi-dimensional indicators for extracting the residential buildings. In this regards, sets of morphological properties derived from geographic vector and remotely sensed data are used in a binary regression model. LU classification from the morphological analysis results in an overall accuracy of 93.2% for extracting residential buildings. It should be noted that equipped with such a powerful LU data collection tool and detailed LU data, urban planners/modelers can more reliably and precisely predict economic interactions, activity locations, space and housing developments, business expansion, and trip patterns.  
  关键词: Land Use Extraction, Morphological Analysis, VHR imagery  
  下载:         下载 [6 ]  
  vol   1 (1)  :576
 
   311. Analysis of Land Use Extraction through Morphological Analysis Using Geographic and Remotely Sensed Data
    作者姓名: Seyed Ahad Beykaei, Ming Zhong, and Yun Zhang  
  摘要:   Lack of detailed land use (LU) information and of efficient data gathering methods have made modeling of urban systems difficult. This study aims to develop a hybrid RS (remote sensing)/GI (geographic information) system in order to extract residential LUs from very high resolution (VHR) remotely sensed imagery. Land cover information extracted from remote sensing and several types of geographic data from the study area, City of Fredericton, Canada, are fused into the residential LU extraction expert system to examine correlation/association rules at the building-level. Morphological analysis at the building-level is used through a stepwise binary logistic regression model to provide a set of multi-dimensional indicators for extracting the residential buildings. In this regards, sets of morphological properties derived from geographic vector and remotely sensed data are used in a binary regression model. LU classification from the morphological analysis results in an overall accuracy of 93.2% for extracting residential buildings. It should be noted that equipped with such a powerful LU data collection tool and detailed LU data, urban planners/modelers can more reliably and precisely predict economic interactions, activity locations, space and housing developments, business expansion, and trip patterns.  
  关键词: Land Use Extraction, Morphological Analysis, VHR imagery  
  下载:         下载 [6 ]  
  vol   1 (1)  :576
 
   312. Analysis of Land Use Extraction through Morphological Analysis Using Geographic and Remotely Sensed Data
    作者姓名: Seyed Ahad Beykaei, Ming Zhong, and Yun Zhang  
  摘要:   Lack of detailed land use (LU) information and of efficient data gathering methods have made modeling of urban systems difficult. This study aims to develop a hybrid RS (remote sensing)/GI (geographic information) system in order to extract residential LUs from very high resolution (VHR) remotely sensed imagery. Land cover information extracted from remote sensing and several types of geographic data from the study area, City of Fredericton, Canada, are fused into the residential LU extraction expert system to examine correlation/association rules at the building-level. Morphological analysis at the building-level is used through a stepwise binary logistic regression model to provide a set of multi-dimensional indicators for extracting the residential buildings. In this regards, sets of morphological properties derived from geographic vector and remotely sensed data are used in a binary regression model. LU classification from the morphological analysis results in an overall accuracy of 93.2% for extracting residential buildings. It should be noted that equipped with such a powerful LU data collection tool and detailed LU data, urban planners/modelers can more reliably and precisely predict economic interactions, activity locations, space and housing developments, business expansion, and trip patterns.  
  关键词: Land Use Extraction, Morphological Analysis, VHR imagery  
  下载:         下载 [6 ]  
  vol   1 (1)  :576
 
   313. Max-Min Ant System for Dynamic Vehicle Routing Problem with Time Window
    作者姓名: Xia Liu  
  摘要:   To satisfy no delay and minimize the travelling distance of all routes for dynamic vehicle routing problem with time window, the planning horizon is divided and the dynamic vehicle routing problem is partitioned into a series of static sub-problems, which are solved by improved max-min ant system. In the max-min ant system, routes are constructed with the parallel and sequential methods for datasets respectively aiming at customers in random and clustering distribution. As the behavior of max-min ant system depends strongly on the value of parameters, multi-parameters including distance heuristic factor, choice probability, level of pheromone persistence, level of time window and the number of ants are self-adapted at different stages in the course of algorithm execution. Instances are tested and results show the effectiveness in solving these problems.  
  关键词: transportation, dynamic vehicle routing problem, time window, max-min ant system, ant colony algorithm  
  下载:         下载 [6 ]  
  vol   1 (1)  :583
 
   314. Max-Min Ant System for Dynamic Vehicle Routing Problem with Time Window
    作者姓名: Xia Liu  
  摘要:   To satisfy no delay and minimize the travelling distance of all routes for dynamic vehicle routing problem with time window, the planning horizon is divided and the dynamic vehicle routing problem is partitioned into a series of static sub-problems, which are solved by improved max-min ant system. In the max-min ant system, routes are constructed with the parallel and sequential methods for datasets respectively aiming at customers in random and clustering distribution. As the behavior of max-min ant system depends strongly on the value of parameters, multi-parameters including distance heuristic factor, choice probability, level of pheromone persistence, level of time window and the number of ants are self-adapted at different stages in the course of algorithm execution. Instances are tested and results show the effectiveness in solving these problems.  
  关键词: transportation, dynamic vehicle routing problem, time window, max-min ant system, ant colony algorithm  
  下载:         下载 [6 ]  
  vol   1 (1)  :583
 
   315. Max-Min Ant System for Dynamic Vehicle Routing Problem with Time Window
    作者姓名: Xia Liu  
  摘要:   To satisfy no delay and minimize the travelling distance of all routes for dynamic vehicle routing problem with time window, the planning horizon is divided and the dynamic vehicle routing problem is partitioned into a series of static sub-problems, which are solved by improved max-min ant system. In the max-min ant system, routes are constructed with the parallel and sequential methods for datasets respectively aiming at customers in random and clustering distribution. As the behavior of max-min ant system depends strongly on the value of parameters, multi-parameters including distance heuristic factor, choice probability, level of pheromone persistence, level of time window and the number of ants are self-adapted at different stages in the course of algorithm execution. Instances are tested and results show the effectiveness in solving these problems.  
  关键词: transportation, dynamic vehicle routing problem, time window, max-min ant system, ant colony algorithm  
  下载:         下载 [6 ]  
  vol   1 (1)  :583
 
   316. Max-Min Ant System for Dynamic Vehicle Routing Problem with Time Window
    作者姓名: Xia Liu  
  摘要:   To satisfy no delay and minimize the travelling distance of all routes for dynamic vehicle routing problem with time window, the planning horizon is divided and the dynamic vehicle routing problem is partitioned into a series of static sub-problems, which are solved by improved max-min ant system. In the max-min ant system, routes are constructed with the parallel and sequential methods for datasets respectively aiming at customers in random and clustering distribution. As the behavior of max-min ant system depends strongly on the value of parameters, multi-parameters including distance heuristic factor, choice probability, level of pheromone persistence, level of time window and the number of ants are self-adapted at different stages in the course of algorithm execution. Instances are tested and results show the effectiveness in solving these problems.  
  关键词: transportation, dynamic vehicle routing problem, time window, max-min ant system, ant colony algorithm  
  下载:         下载 [6 ]  
  vol   1 (1)  :583
 
   317. Performance Comparison of Different Highway Snow-Melting Agents
    作者姓名: Yuhui Wu  
  摘要:   The snow-and-ice covered pavements threaten highway traffic safety in winter. The use of snow-melting agents is one of the most significant means to remove ice and snow on road rapidly. According to the main ingredients of the agents, the highway snow-melting agents are classified into three types that are chloride salts, non-chloride salts and environment-friendly ones. Comparisons on the melting snow and ice performances, the corrosion to the concrete and metal materials and the effects of poa pratensis seed germination percentage of different snow-melting agents to evaluate different agents’ performances synthetically. Then technological references are put forward to guide using snow-melting agents efficiently, safely and environmentally-friendly.  
  关键词: Snow-melting Agents; Performance; Comparison  
  下载:         下载 [6 ]  
  vol   1 (1)  :590
 
   318. Performance Comparison of Different Highway Snow-Melting Agents
    作者姓名: Yuhui Wu  
  摘要:   The snow-and-ice covered pavements threaten highway traffic safety in winter. The use of snow-melting agents is one of the most significant means to remove ice and snow on road rapidly. According to the main ingredients of the agents, the highway snow-melting agents are classified into three types that are chloride salts, non-chloride salts and environment-friendly ones. Comparisons on the melting snow and ice performances, the corrosion to the concrete and metal materials and the effects of poa pratensis seed germination percentage of different snow-melting agents to evaluate different agents’ performances synthetically. Then technological references are put forward to guide using snow-melting agents efficiently, safely and environmentally-friendly.  
  关键词: Snow-melting Agents; Performance; Comparison  
  下载:         下载 [6 ]  
  vol   1 (1)  :590
 
   319. Performance Comparison of Different Highway Snow-Melting Agents
    作者姓名: Yuhui Wu  
  摘要:   The snow-and-ice covered pavements threaten highway traffic safety in winter. The use of snow-melting agents is one of the most significant means to remove ice and snow on road rapidly. According to the main ingredients of the agents, the highway snow-melting agents are classified into three types that are chloride salts, non-chloride salts and environment-friendly ones. Comparisons on the melting snow and ice performances, the corrosion to the concrete and metal materials and the effects of poa pratensis seed germination percentage of different snow-melting agents to evaluate different agents’ performances synthetically. Then technological references are put forward to guide using snow-melting agents efficiently, safely and environmentally-friendly.  
  关键词: Snow-melting Agents; Performance; Comparison  
  下载:         下载 [6 ]  
  vol   1 (1)  :590
 
   320. Performance Comparison of Different Highway Snow-Melting Agents
    作者姓名: Yuhui Wu  
  摘要:   The snow-and-ice covered pavements threaten highway traffic safety in winter. The use of snow-melting agents is one of the most significant means to remove ice and snow on road rapidly. According to the main ingredients of the agents, the highway snow-melting agents are classified into three types that are chloride salts, non-chloride salts and environment-friendly ones. Comparisons on the melting snow and ice performances, the corrosion to the concrete and metal materials and the effects of poa pratensis seed germination percentage of different snow-melting agents to evaluate different agents’ performances synthetically. Then technological references are put forward to guide using snow-melting agents efficiently, safely and environmentally-friendly.  
  关键词: Snow-melting Agents; Performance; Comparison  
  下载:         下载 [6 ]  
  vol   1 (1)  :590
 
   321. A Departure Time Choice Model with Bounded Rationality
    作者姓名: Wenyun Tang, Lin Cheng, and Zhaoming Chu  
  摘要:   Departure time plays an important role in the commuting trip, to provide basis for future policy making, e.g., forecasting the peak hour without a great deal of investigation. Paper proposed a departure time choice model based on prospect theory, considering that travelers are not entirely rational, being affected by the environment, the ability of obtaining information of traffic and so on. In the case study, travelers are divided into several groups by their risk attitude, i.e., risk averse, risk neutral, risk appetite, then we find difference of the departure time among different kinds of travelers, providing evidence for road network construction and traffic management.  
  关键词: departure time, bounded rationality, prospect theory  
  下载:         下载 [6 ]  
  vol   1 (1)  :596
 
   322. A Departure Time Choice Model with Bounded Rationality
    作者姓名: Wenyun Tang, Lin Cheng, and Zhaoming Chu  
  摘要:   Departure time plays an important role in the commuting trip, to provide basis for future policy making, e.g., forecasting the peak hour without a great deal of investigation. Paper proposed a departure time choice model based on prospect theory, considering that travelers are not entirely rational, being affected by the environment, the ability of obtaining information of traffic and so on. In the case study, travelers are divided into several groups by their risk attitude, i.e., risk averse, risk neutral, risk appetite, then we find difference of the departure time among different kinds of travelers, providing evidence for road network construction and traffic management.  
  关键词: departure time, bounded rationality, prospect theory  
  下载:         下载 [6 ]  
  vol   1 (1)  :596
 
   323. A Departure Time Choice Model with Bounded Rationality
    作者姓名: Wenyun Tang, Lin Cheng, and Zhaoming Chu  
  摘要:   Departure time plays an important role in the commuting trip, to provide basis for future policy making, e.g., forecasting the peak hour without a great deal of investigation. Paper proposed a departure time choice model based on prospect theory, considering that travelers are not entirely rational, being affected by the environment, the ability of obtaining information of traffic and so on. In the case study, travelers are divided into several groups by their risk attitude, i.e., risk averse, risk neutral, risk appetite, then we find difference of the departure time among different kinds of travelers, providing evidence for road network construction and traffic management.  
  关键词: departure time, bounded rationality, prospect theory  
  下载:         下载 [6 ]  
  vol   1 (1)  :596
 
   324. A Departure Time Choice Model with Bounded Rationality
    作者姓名: Wenyun Tang, Lin Cheng, and Zhaoming Chu  
  摘要:   Departure time plays an important role in the commuting trip, to provide basis for future policy making, e.g., forecasting the peak hour without a great deal of investigation. Paper proposed a departure time choice model based on prospect theory, considering that travelers are not entirely rational, being affected by the environment, the ability of obtaining information of traffic and so on. In the case study, travelers are divided into several groups by their risk attitude, i.e., risk averse, risk neutral, risk appetite, then we find difference of the departure time among different kinds of travelers, providing evidence for road network construction and traffic management.  
  关键词: departure time, bounded rationality, prospect theory  
  下载:         下载 [6 ]  
  vol   1 (1)  :596
 
   325. Solving the Vehicle Routing Problems with Time Window using Hybrid Genetic Algorithm
    作者姓名: Changfeng Zhou  
  摘要:   A hybrid genetic algorithm for solving vehicle routing problem with time window (VRPTW) is presented. The proposed heuristic adopts a new chromosome structure containing more information about the vehicle route configuration. Computational experiments are implemented to verify the performance of the proposed hybrid genetic algorithm, and the solutions are competitive to the published in literature.  
  关键词: VRP; Hybrid Genetic Algorithm; mathematical model  
  下载:         下载 [6 ]  
  vol   1 (1)  :602
 
   326. Solving the Vehicle Routing Problems with Time Window using Hybrid Genetic Algorithm
    作者姓名: Changfeng Zhou  
  摘要:   A hybrid genetic algorithm for solving vehicle routing problem with time window (VRPTW) is presented. The proposed heuristic adopts a new chromosome structure containing more information about the vehicle route configuration. Computational experiments are implemented to verify the performance of the proposed hybrid genetic algorithm, and the solutions are competitive to the published in literature.  
  关键词: VRP; Hybrid Genetic Algorithm; mathematical model  
  下载:         下载 [6 ]  
  vol   1 (1)  :602
 
   327. Solving the Vehicle Routing Problems with Time Window using Hybrid Genetic Algorithm
    作者姓名: Changfeng Zhou  
  摘要:   A hybrid genetic algorithm for solving vehicle routing problem with time window (VRPTW) is presented. The proposed heuristic adopts a new chromosome structure containing more information about the vehicle route configuration. Computational experiments are implemented to verify the performance of the proposed hybrid genetic algorithm, and the solutions are competitive to the published in literature.  
  关键词: VRP; Hybrid Genetic Algorithm; mathematical model  
  下载:         下载 [6 ]  
  vol   1 (1)  :602
 
   328. Solving the Vehicle Routing Problems with Time Window using Hybrid Genetic Algorithm
    作者姓名: Changfeng Zhou  
  摘要:   A hybrid genetic algorithm for solving vehicle routing problem with time window (VRPTW) is presented. The proposed heuristic adopts a new chromosome structure containing more information about the vehicle route configuration. Computational experiments are implemented to verify the performance of the proposed hybrid genetic algorithm, and the solutions are competitive to the published in literature.  
  关键词: VRP; Hybrid Genetic Algorithm; mathematical model  
  下载:         下载 [6 ]  
  vol   1 (1)  :602
 
   329. Analysis and Discussion on Limits of Dimensions, Axle Load, and Masses for Road Vehicles
    作者姓名: Xueli Zhang, Hao Zhang, Chengqiang Zong, and Hongwei Zhang  
  摘要:   In order to rule overload and oversize transportation, regulate the produce of vehicle, mandatory standard GB 1589-2004 “Limits of dimensions, axle load and masses for road vehicles” was promulgated and implemented in China. With the implement of standard GB 1589-2004, it achieved the expected result. However, with the improvement of vehicle technology, road and the facilities, related technical regulations should be more closely to conform to the international regulations. Besides, some factors which didn’t meet actual situation were found after the implement of this standard. A comparative analysis was discussed in this paper about the dimensions, axle load and masses of vehicle in order to make the standard more suitable for road transport’s actual need, road facilities’ requirement at home and abroad. Finally, this paper put forward opinions and suggestions which will be useful for the revision of the standard.  
  关键词: limits of dimensions, analysis on limits of masses for road vehicles, analysis on limits  
  下载:         下载 [6 ]  
  vol   1 (1)  :608
 
   330. Analysis and Discussion on Limits of Dimensions, Axle Load, and Masses for Road Vehicles
    作者姓名: Xueli Zhang, Hao Zhang, Chengqiang Zong, and Hongwei Zhang  
  摘要:   In order to rule overload and oversize transportation, regulate the produce of vehicle, mandatory standard GB 1589-2004 “Limits of dimensions, axle load and masses for road vehicles” was promulgated and implemented in China. With the implement of standard GB 1589-2004, it achieved the expected result. However, with the improvement of vehicle technology, road and the facilities, related technical regulations should be more closely to conform to the international regulations. Besides, some factors which didn’t meet actual situation were found after the implement of this standard. A comparative analysis was discussed in this paper about the dimensions, axle load and masses of vehicle in order to make the standard more suitable for road transport’s actual need, road facilities’ requirement at home and abroad. Finally, this paper put forward opinions and suggestions which will be useful for the revision of the standard.  
  关键词: limits of dimensions, analysis on limits of masses for road vehicles, analysis on limits  
  下载:         下载 [6 ]  
  vol   1 (1)  :608
 
   331. Analysis and Discussion on Limits of Dimensions, Axle Load, and Masses for Road Vehicles
    作者姓名: Xueli Zhang, Hao Zhang, Chengqiang Zong, and Hongwei Zhang  
  摘要:   In order to rule overload and oversize transportation, regulate the produce of vehicle, mandatory standard GB 1589-2004 “Limits of dimensions, axle load and masses for road vehicles” was promulgated and implemented in China. With the implement of standard GB 1589-2004, it achieved the expected result. However, with the improvement of vehicle technology, road and the facilities, related technical regulations should be more closely to conform to the international regulations. Besides, some factors which didn’t meet actual situation were found after the implement of this standard. A comparative analysis was discussed in this paper about the dimensions, axle load and masses of vehicle in order to make the standard more suitable for road transport’s actual need, road facilities’ requirement at home and abroad. Finally, this paper put forward opinions and suggestions which will be useful for the revision of the standard.  
  关键词: limits of dimensions, analysis on limits of masses for road vehicles, analysis on limits  
  下载:         下载 [6 ]  
  vol   1 (1)  :608
 
   332. Analysis and Discussion on Limits of Dimensions, Axle Load, and Masses for Road Vehicles
    作者姓名: Xueli Zhang, Hao Zhang, Chengqiang Zong, and Hongwei Zhang  
  摘要:   In order to rule overload and oversize transportation, regulate the produce of vehicle, mandatory standard GB 1589-2004 “Limits of dimensions, axle load and masses for road vehicles” was promulgated and implemented in China. With the implement of standard GB 1589-2004, it achieved the expected result. However, with the improvement of vehicle technology, road and the facilities, related technical regulations should be more closely to conform to the international regulations. Besides, some factors which didn’t meet actual situation were found after the implement of this standard. A comparative analysis was discussed in this paper about the dimensions, axle load and masses of vehicle in order to make the standard more suitable for road transport’s actual need, road facilities’ requirement at home and abroad. Finally, this paper put forward opinions and suggestions which will be useful for the revision of the standard.  
  关键词: limits of dimensions, analysis on limits of masses for road vehicles, analysis on limits  
  下载:         下载 [6 ]  
  vol   1 (1)  :608
 
   333. The Design of the Multisource Remote Real-time Monitoring System for Structure Safety of Dashanpo Tunnel
    作者姓名: Run Yuan, Ran Shao, Jian Huang, and Enjun Wang  
  摘要:   Tunnel is prone to engineering accident location and the monitoring system can complete the vault subsidence monitoring, surrounding displacement monitoring, steel support stress monitoring, anchor stress monitoring and surrounding rock pressure monitoring by the various sensor. After getting the data, the system realizes the remote wireless monitoring by the GPRS. It can provide scientific basis for the safety construction and normal operation of Yi Ba(Yichang to Badong) freeway. It has many advantages, namely, all-weather automatic monitoring, and background processing and information remote real-time transmission.  
  关键词: Highway tunnel; GPRS; Structure safety; Real-time monitoring  
  下载:         下载 [6 ]  
  vol   1 (1)  :614
 
   334. The Design of the Multisource Remote Real-time Monitoring System for Structure Safety of Dashanpo Tunnel
    作者姓名: Run Yuan, Ran Shao, Jian Huang, and Enjun Wang  
  摘要:   Tunnel is prone to engineering accident location and the monitoring system can complete the vault subsidence monitoring, surrounding displacement monitoring, steel support stress monitoring, anchor stress monitoring and surrounding rock pressure monitoring by the various sensor. After getting the data, the system realizes the remote wireless monitoring by the GPRS. It can provide scientific basis for the safety construction and normal operation of Yi Ba(Yichang to Badong) freeway. It has many advantages, namely, all-weather automatic monitoring, and background processing and information remote real-time transmission.  
  关键词: Highway tunnel; GPRS; Structure safety; Real-time monitoring  
  下载:         下载 [6 ]  
  vol   1 (1)  :614
 
   335. The Design of the Multisource Remote Real-time Monitoring System for Structure Safety of Dashanpo Tunnel
    作者姓名: Run Yuan, Ran Shao, Jian Huang, and Enjun Wang  
  摘要:   Tunnel is prone to engineering accident location and the monitoring system can complete the vault subsidence monitoring, surrounding displacement monitoring, steel support stress monitoring, anchor stress monitoring and surrounding rock pressure monitoring by the various sensor. After getting the data, the system realizes the remote wireless monitoring by the GPRS. It can provide scientific basis for the safety construction and normal operation of Yi Ba(Yichang to Badong) freeway. It has many advantages, namely, all-weather automatic monitoring, and background processing and information remote real-time transmission.  
  关键词: Highway tunnel; GPRS; Structure safety; Real-time monitoring  
  下载:         下载 [6 ]  
  vol   1 (1)  :614
 
   336. The Design of the Multisource Remote Real-time Monitoring System for Structure Safety of Dashanpo Tunnel
    作者姓名: Run Yuan, Ran Shao, Jian Huang, and Enjun Wang  
  摘要:   Tunnel is prone to engineering accident location and the monitoring system can complete the vault subsidence monitoring, surrounding displacement monitoring, steel support stress monitoring, anchor stress monitoring and surrounding rock pressure monitoring by the various sensor. After getting the data, the system realizes the remote wireless monitoring by the GPRS. It can provide scientific basis for the safety construction and normal operation of Yi Ba(Yichang to Badong) freeway. It has many advantages, namely, all-weather automatic monitoring, and background processing and information remote real-time transmission.  
  关键词: Highway tunnel; GPRS; Structure safety; Real-time monitoring  
  下载:         下载 [6 ]  
  vol   1 (1)  :614
 
   337. Research on Vibration Serviceability of Over-Track Buildings
    作者姓名: Huajie Zhou, Wei He, and Weiping Xie  
  摘要:   Over-track buildings are widely adopted along metro lines for its superiority in intensive land use and considerable economic benefits. However, the frequently moving subway trains will cause large vibration of the over-track buildings and lead to the discomfort of the occupants, especially for tall buildings. In this study, the measured vibration acceleration at the bottom of the columns near the railway lines, which was induced by trains driving into the car depot, was used as the vibration input of the structure. The dynamic response of the upper building was calculated by the uniform excitation method without considering the soil-structure interaction. Based on the evaluation methods presented by ISO 10137 and BS 6472-1, the vibration serviceability of the building was evaluated with the help of MATLAB programming. The results showed that the vibration serviceability of the building can not meet the requirements and some vibration reduction measures should be taken. Above research works are valuable for the finite element modeling, vibration serviceability evaluation of similar engineering.  
  关键词: over-track buildings  
  下载:         下载 [6 ]  
  vol   1 (1)  :621
 
   338. Research on Vibration Serviceability of Over-Track Buildings
    作者姓名: Huajie Zhou, Wei He, and Weiping Xie  
  摘要:   Over-track buildings are widely adopted along metro lines for its superiority in intensive land use and considerable economic benefits. However, the frequently moving subway trains will cause large vibration of the over-track buildings and lead to the discomfort of the occupants, especially for tall buildings. In this study, the measured vibration acceleration at the bottom of the columns near the railway lines, which was induced by trains driving into the car depot, was used as the vibration input of the structure. The dynamic response of the upper building was calculated by the uniform excitation method without considering the soil-structure interaction. Based on the evaluation methods presented by ISO 10137 and BS 6472-1, the vibration serviceability of the building was evaluated with the help of MATLAB programming. The results showed that the vibration serviceability of the building can not meet the requirements and some vibration reduction measures should be taken. Above research works are valuable for the finite element modeling, vibration serviceability evaluation of similar engineering.  
  关键词: over-track buildings  
  下载:         下载 [6 ]  
  vol   1 (1)  :621
 
   339. Research on Vibration Serviceability of Over-Track Buildings
    作者姓名: Huajie Zhou, Wei He, and Weiping Xie  
  摘要:   Over-track buildings are widely adopted along metro lines for its superiority in intensive land use and considerable economic benefits. However, the frequently moving subway trains will cause large vibration of the over-track buildings and lead to the discomfort of the occupants, especially for tall buildings. In this study, the measured vibration acceleration at the bottom of the columns near the railway lines, which was induced by trains driving into the car depot, was used as the vibration input of the structure. The dynamic response of the upper building was calculated by the uniform excitation method without considering the soil-structure interaction. Based on the evaluation methods presented by ISO 10137 and BS 6472-1, the vibration serviceability of the building was evaluated with the help of MATLAB programming. The results showed that the vibration serviceability of the building can not meet the requirements and some vibration reduction measures should be taken. Above research works are valuable for the finite element modeling, vibration serviceability evaluation of similar engineering.  
  关键词: over-track buildings  
  下载:         下载 [6 ]  
  vol   1 (1)  :621
 
   340. Research on Vibration Serviceability of Over-Track Buildings
    作者姓名: Huajie Zhou, Wei He, and Weiping Xie  
  摘要:   Over-track buildings are widely adopted along metro lines for its superiority in intensive land use and considerable economic benefits. However, the frequently moving subway trains will cause large vibration of the over-track buildings and lead to the discomfort of the occupants, especially for tall buildings. In this study, the measured vibration acceleration at the bottom of the columns near the railway lines, which was induced by trains driving into the car depot, was used as the vibration input of the structure. The dynamic response of the upper building was calculated by the uniform excitation method without considering the soil-structure interaction. Based on the evaluation methods presented by ISO 10137 and BS 6472-1, the vibration serviceability of the building was evaluated with the help of MATLAB programming. The results showed that the vibration serviceability of the building can not meet the requirements and some vibration reduction measures should be taken. Above research works are valuable for the finite element modeling, vibration serviceability evaluation of similar engineering.  
  关键词: over-track buildings  
  下载:         下载 [6 ]  
  vol   1 (1)  :621
 
   341. Comparison Between Traditional Four-Step and Activity-Based Travel Demand Modeling—A Case Study of Tampa, Florida
    作者姓名: Rong Shan, Ming Zhong, and Chunyu Lu  
  摘要:   The activity-based travel demand model has been viewed as an advanced approach with higher fidelity and better policy sensitivity. This study aims to compares modeling results from an activity-based model (ABM) developed using the travel diary data collected in the Tampa Bay Region with an existing traditional four-step model - the Tampa Bay Regional Planning Model (TBRPM), based on the four sequential steps: trip generation, trip distribution, model split, and trip assignment. The comparison results show salient differences. Trip production rates calculated from the travel diary data are found to be either double of or a quarter less than the TBRPM. On the other hand, trip attraction rates computed from ABM are found either more than double of or one tenth less than TBRPM. The trip distribution curves from the two models are found similar, but the peaking of travel time is different, with 10 min for the TBRPM, but 15 min for the ABM. Mode split analyses show that the TBRPM may underestimate the driving trips and it cannot capture the usage of other alternative modes, such as taxi and non-motorized. In addition, the ABMs are found to be less capable of reproducing observed traffic counts when compared to the TBRPM, most likely due to not considering the external and through trips. The comparison results presented can help transportation engineers and planners better understand the strengths and weaknesses of the two types of models and this will subsequently assist decision-makers to choose a better modeling tool for their planning initiatives.  
  关键词: Travel Demand, Activity-based, Four-step Model  
  下载:         下载 [6 ]  
  vol   1 (1)  :627
 
   342. Comparison Between Traditional Four-Step and Activity-Based Travel Demand Modeling—A Case Study of Tampa, Florida
    作者姓名: Rong Shan, Ming Zhong, and Chunyu Lu  
  摘要:   The activity-based travel demand model has been viewed as an advanced approach with higher fidelity and better policy sensitivity. This study aims to compares modeling results from an activity-based model (ABM) developed using the travel diary data collected in the Tampa Bay Region with an existing traditional four-step model - the Tampa Bay Regional Planning Model (TBRPM), based on the four sequential steps: trip generation, trip distribution, model split, and trip assignment. The comparison results show salient differences. Trip production rates calculated from the travel diary data are found to be either double of or a quarter less than the TBRPM. On the other hand, trip attraction rates computed from ABM are found either more than double of or one tenth less than TBRPM. The trip distribution curves from the two models are found similar, but the peaking of travel time is different, with 10 min for the TBRPM, but 15 min for the ABM. Mode split analyses show that the TBRPM may underestimate the driving trips and it cannot capture the usage of other alternative modes, such as taxi and non-motorized. In addition, the ABMs are found to be less capable of reproducing observed traffic counts when compared to the TBRPM, most likely due to not considering the external and through trips. The comparison results presented can help transportation engineers and planners better understand the strengths and weaknesses of the two types of models and this will subsequently assist decision-makers to choose a better modeling tool for their planning initiatives.  
  关键词: Travel Demand, Activity-based, Four-step Model  
  下载:         下载 [6 ]  
  vol   1 (1)  :627
 
   343. Comparison Between Traditional Four-Step and Activity-Based Travel Demand Modeling—A Case Study of Tampa, Florida
    作者姓名: Rong Shan, Ming Zhong, and Chunyu Lu  
  摘要:   The activity-based travel demand model has been viewed as an advanced approach with higher fidelity and better policy sensitivity. This study aims to compares modeling results from an activity-based model (ABM) developed using the travel diary data collected in the Tampa Bay Region with an existing traditional four-step model - the Tampa Bay Regional Planning Model (TBRPM), based on the four sequential steps: trip generation, trip distribution, model split, and trip assignment. The comparison results show salient differences. Trip production rates calculated from the travel diary data are found to be either double of or a quarter less than the TBRPM. On the other hand, trip attraction rates computed from ABM are found either more than double of or one tenth less than TBRPM. The trip distribution curves from the two models are found similar, but the peaking of travel time is different, with 10 min for the TBRPM, but 15 min for the ABM. Mode split analyses show that the TBRPM may underestimate the driving trips and it cannot capture the usage of other alternative modes, such as taxi and non-motorized. In addition, the ABMs are found to be less capable of reproducing observed traffic counts when compared to the TBRPM, most likely due to not considering the external and through trips. The comparison results presented can help transportation engineers and planners better understand the strengths and weaknesses of the two types of models and this will subsequently assist decision-makers to choose a better modeling tool for their planning initiatives.  
  关键词: Travel Demand, Activity-based, Four-step Model  
  下载:         下载 [6 ]  
  vol   1 (1)  :627
 
   344. Comparison Between Traditional Four-Step and Activity-Based Travel Demand Modeling—A Case Study of Tampa, Florida
    作者姓名: Rong Shan, Ming Zhong, and Chunyu Lu  
  摘要:   The activity-based travel demand model has been viewed as an advanced approach with higher fidelity and better policy sensitivity. This study aims to compares modeling results from an activity-based model (ABM) developed using the travel diary data collected in the Tampa Bay Region with an existing traditional four-step model - the Tampa Bay Regional Planning Model (TBRPM), based on the four sequential steps: trip generation, trip distribution, model split, and trip assignment. The comparison results show salient differences. Trip production rates calculated from the travel diary data are found to be either double of or a quarter less than the TBRPM. On the other hand, trip attraction rates computed from ABM are found either more than double of or one tenth less than TBRPM. The trip distribution curves from the two models are found similar, but the peaking of travel time is different, with 10 min for the TBRPM, but 15 min for the ABM. Mode split analyses show that the TBRPM may underestimate the driving trips and it cannot capture the usage of other alternative modes, such as taxi and non-motorized. In addition, the ABMs are found to be less capable of reproducing observed traffic counts when compared to the TBRPM, most likely due to not considering the external and through trips. The comparison results presented can help transportation engineers and planners better understand the strengths and weaknesses of the two types of models and this will subsequently assist decision-makers to choose a better modeling tool for their planning initiatives.  
  关键词: Travel Demand, Activity-based, Four-step Model  
  下载:         下载 [6 ]  
  vol   1 (1)  :627
 
   345. Analysis on the Influence of Logistics Park Development to Regional Economic
    作者姓名: Qian Dai  
  摘要:   As the significant node of modern logistic system and the cluster of logistic industry, Logistics Park has already been considered as a new potential increasing point intended for promoting the progress of urban and regional economics. From the perspective of growth pole theory under the regional economic theory, this paper indicates that the logistics park, functioning as an emerging mode of accumulation for modern logistics, will be a growth pole for certain cities or regions, and then advance and spur the common development of surrounding area and achieve a relatively balanced development of regional economics through the effect of radiation and trickling-down. This paper analyzes that the influence to regional economics brought out by the operation of Logistics Park involve the following aspects: a) aggregating related logistics industries; b) promoting the reasonable optimizing and configuration of the elements of resources; c) benefiting the training of the third-party logistics market; d) expanding employment.  
  关键词: Logistics Park; Regional economic; Radiation effect; Trickling-down effect  
  下载:         下载 [6 ]  
  vol   1 (1)  :634
 
   346. Analysis on the Influence of Logistics Park Development to Regional Economic
    作者姓名: Qian Dai  
  摘要:   As the significant node of modern logistic system and the cluster of logistic industry, Logistics Park has already been considered as a new potential increasing point intended for promoting the progress of urban and regional economics. From the perspective of growth pole theory under the regional economic theory, this paper indicates that the logistics park, functioning as an emerging mode of accumulation for modern logistics, will be a growth pole for certain cities or regions, and then advance and spur the common development of surrounding area and achieve a relatively balanced development of regional economics through the effect of radiation and trickling-down. This paper analyzes that the influence to regional economics brought out by the operation of Logistics Park involve the following aspects: a) aggregating related logistics industries; b) promoting the reasonable optimizing and configuration of the elements of resources; c) benefiting the training of the third-party logistics market; d) expanding employment.  
  关键词: Logistics Park; Regional economic; Radiation effect; Trickling-down effect  
  下载:         下载 [6 ]  
  vol   1 (1)  :634
 
   347. Analysis on the Influence of Logistics Park Development to Regional Economic
    作者姓名: Qian Dai  
  摘要:   As the significant node of modern logistic system and the cluster of logistic industry, Logistics Park has already been considered as a new potential increasing point intended for promoting the progress of urban and regional economics. From the perspective of growth pole theory under the regional economic theory, this paper indicates that the logistics park, functioning as an emerging mode of accumulation for modern logistics, will be a growth pole for certain cities or regions, and then advance and spur the common development of surrounding area and achieve a relatively balanced development of regional economics through the effect of radiation and trickling-down. This paper analyzes that the influence to regional economics brought out by the operation of Logistics Park involve the following aspects: a) aggregating related logistics industries; b) promoting the reasonable optimizing and configuration of the elements of resources; c) benefiting the training of the third-party logistics market; d) expanding employment.  
  关键词: Logistics Park; Regional economic; Radiation effect; Trickling-down effect  
  下载:         下载 [6 ]  
  vol   1 (1)  :634
 
   348. Analysis on the Influence of Logistics Park Development to Regional Economic
    作者姓名: Qian Dai  
  摘要:   As the significant node of modern logistic system and the cluster of logistic industry, Logistics Park has already been considered as a new potential increasing point intended for promoting the progress of urban and regional economics. From the perspective of growth pole theory under the regional economic theory, this paper indicates that the logistics park, functioning as an emerging mode of accumulation for modern logistics, will be a growth pole for certain cities or regions, and then advance and spur the common development of surrounding area and achieve a relatively balanced development of regional economics through the effect of radiation and trickling-down. This paper analyzes that the influence to regional economics brought out by the operation of Logistics Park involve the following aspects: a) aggregating related logistics industries; b) promoting the reasonable optimizing and configuration of the elements of resources; c) benefiting the training of the third-party logistics market; d) expanding employment.  
  关键词: Logistics Park; Regional economic; Radiation effect; Trickling-down effect  
  下载:         下载 [6 ]  
  vol   1 (1)  :634
 
   349. A Nonparametric Approach to Road Safety Analysis—Does It Make a Difference?
    作者姓名: Lalita Thakali, Liping Fu, Tao Chen, and Taimur Usman  
  摘要:   In road safety research, it has long become a tradition to take a parametric approach to modeling road collisions, which has resulted in a variety of parametric models such as Negative Binomial, Poisson lognormal, zero-inflated Poisson, and random-effect models. While easy to apply and interpret, a parametric approach has several critical limitations due to the modeling requirement of assuming a specific distribution form for each model variable and a fixed functional relationship between each model parameter and the predictors. Violation of these assumptions could lead to biased and/or erroneous inferences on the effect of these predictors on the dependent variable (e.g. collision frequency). This paper introduces a data driven, nonparametric alternative - Kernel regression aiming at answering the question of whether or not it makes any meaningful differences as compared to the traditional parametric method. The proposed approach was applied to model winter road collisions using a database containing hourly observations of collisions, road weather and surface conditions, and traffic counts on a set of highways in Ontario, Canada, over six winter seasons. The results from this approach have clearly shown that significantly nonlinear relationships exist between collision frequency and some condition factors, which were not captured in a prior study using a parametric technique. Furthermore, the new approach also captured some moderating effects of several condition variables, which could have been easily missed in a parametric analysis.  
  关键词: Collision frequency, nonparametric approach, Kernel regression  
  下载:         下载 [6 ]  
  vol   1 (1)  :640
 
   350. A Nonparametric Approach to Road Safety Analysis—Does It Make a Difference?
    作者姓名: Lalita Thakali, Liping Fu, Tao Chen, and Taimur Usman  
  摘要:   In road safety research, it has long become a tradition to take a parametric approach to modeling road collisions, which has resulted in a variety of parametric models such as Negative Binomial, Poisson lognormal, zero-inflated Poisson, and random-effect models. While easy to apply and interpret, a parametric approach has several critical limitations due to the modeling requirement of assuming a specific distribution form for each model variable and a fixed functional relationship between each model parameter and the predictors. Violation of these assumptions could lead to biased and/or erroneous inferences on the effect of these predictors on the dependent variable (e.g. collision frequency). This paper introduces a data driven, nonparametric alternative - Kernel regression aiming at answering the question of whether or not it makes any meaningful differences as compared to the traditional parametric method. The proposed approach was applied to model winter road collisions using a database containing hourly observations of collisions, road weather and surface conditions, and traffic counts on a set of highways in Ontario, Canada, over six winter seasons. The results from this approach have clearly shown that significantly nonlinear relationships exist between collision frequency and some condition factors, which were not captured in a prior study using a parametric technique. Furthermore, the new approach also captured some moderating effects of several condition variables, which could have been easily missed in a parametric analysis.  
  关键词: Collision frequency, nonparametric approach, Kernel regression  
  下载:         下载 [6 ]  
  vol   1 (1)  :640
 
   351. A Nonparametric Approach to Road Safety Analysis—Does It Make a Difference?
    作者姓名: Lalita Thakali, Liping Fu, Tao Chen, and Taimur Usman  
  摘要:   In road safety research, it has long become a tradition to take a parametric approach to modeling road collisions, which has resulted in a variety of parametric models such as Negative Binomial, Poisson lognormal, zero-inflated Poisson, and random-effect models. While easy to apply and interpret, a parametric approach has several critical limitations due to the modeling requirement of assuming a specific distribution form for each model variable and a fixed functional relationship between each model parameter and the predictors. Violation of these assumptions could lead to biased and/or erroneous inferences on the effect of these predictors on the dependent variable (e.g. collision frequency). This paper introduces a data driven, nonparametric alternative - Kernel regression aiming at answering the question of whether or not it makes any meaningful differences as compared to the traditional parametric method. The proposed approach was applied to model winter road collisions using a database containing hourly observations of collisions, road weather and surface conditions, and traffic counts on a set of highways in Ontario, Canada, over six winter seasons. The results from this approach have clearly shown that significantly nonlinear relationships exist between collision frequency and some condition factors, which were not captured in a prior study using a parametric technique. Furthermore, the new approach also captured some moderating effects of several condition variables, which could have been easily missed in a parametric analysis.  
  关键词: Collision frequency, nonparametric approach, Kernel regression  
  下载:         下载 [6 ]  
  vol   1 (1)  :640
 
   352. A Nonparametric Approach to Road Safety Analysis—Does It Make a Difference?
    作者姓名: Lalita Thakali, Liping Fu, Tao Chen, and Taimur Usman  
  摘要:   In road safety research, it has long become a tradition to take a parametric approach to modeling road collisions, which has resulted in a variety of parametric models such as Negative Binomial, Poisson lognormal, zero-inflated Poisson, and random-effect models. While easy to apply and interpret, a parametric approach has several critical limitations due to the modeling requirement of assuming a specific distribution form for each model variable and a fixed functional relationship between each model parameter and the predictors. Violation of these assumptions could lead to biased and/or erroneous inferences on the effect of these predictors on the dependent variable (e.g. collision frequency). This paper introduces a data driven, nonparametric alternative - Kernel regression aiming at answering the question of whether or not it makes any meaningful differences as compared to the traditional parametric method. The proposed approach was applied to model winter road collisions using a database containing hourly observations of collisions, road weather and surface conditions, and traffic counts on a set of highways in Ontario, Canada, over six winter seasons. The results from this approach have clearly shown that significantly nonlinear relationships exist between collision frequency and some condition factors, which were not captured in a prior study using a parametric technique. Furthermore, the new approach also captured some moderating effects of several condition variables, which could have been easily missed in a parametric analysis.  
  关键词: Collision frequency, nonparametric approach, Kernel regression  
  下载:         下载 [6 ]  
  vol   1 (1)  :640
 
   353. Analysis of the Traffic Operating Efficiency in China after the Economic Stimulus Plan
    作者姓名: Weiqing Zhong and Zan Yang  
  摘要:   In order to verify the implementation effect and the decision-making rationality of the transport investments in large-scale economic stimulus plan, the application of data envelopment analysis model and related software ,to calculate the changes of the scale efficiency and technical efficiency and comprehensive efficiency of the transport system as the investment target in a period of the large-scale infrastructure construction. Through the analysis of efficiency changes of traffic system, to determine the operation of the traffic system, to evaluate the decision rationality of the transportation infrastructure investment in the economic stimulus plan and making future direction and strength of the investment decision.  
  关键词: Construction Investment; Traffic Operation; Efficiency Analysis; Decision-making Evaluation  
  下载:         下载 [6 ]  
  vol   1 (1)  :649
 
   354. Analysis of the Traffic Operating Efficiency in China after the Economic Stimulus Plan
    作者姓名: Weiqing Zhong and Zan Yang  
  摘要:   In order to verify the implementation effect and the decision-making rationality of the transport investments in large-scale economic stimulus plan, the application of data envelopment analysis model and related software ,to calculate the changes of the scale efficiency and technical efficiency and comprehensive efficiency of the transport system as the investment target in a period of the large-scale infrastructure construction. Through the analysis of efficiency changes of traffic system, to determine the operation of the traffic system, to evaluate the decision rationality of the transportation infrastructure investment in the economic stimulus plan and making future direction and strength of the investment decision.  
  关键词: Construction Investment; Traffic Operation; Efficiency Analysis; Decision-making Evaluation  
  下载:         下载 [6 ]  
  vol   1 (1)  :649
 
   355. Analysis of the Traffic Operating Efficiency in China after the Economic Stimulus Plan
    作者姓名: Weiqing Zhong and Zan Yang  
  摘要:   In order to verify the implementation effect and the decision-making rationality of the transport investments in large-scale economic stimulus plan, the application of data envelopment analysis model and related software ,to calculate the changes of the scale efficiency and technical efficiency and comprehensive efficiency of the transport system as the investment target in a period of the large-scale infrastructure construction. Through the analysis of efficiency changes of traffic system, to determine the operation of the traffic system, to evaluate the decision rationality of the transportation infrastructure investment in the economic stimulus plan and making future direction and strength of the investment decision.  
  关键词: Construction Investment; Traffic Operation; Efficiency Analysis; Decision-making Evaluation  
  下载:         下载 [6 ]  
  vol   1 (1)  :649
 
   356. Analysis of the Traffic Operating Efficiency in China after the Economic Stimulus Plan
    作者姓名: Weiqing Zhong and Zan Yang  
  摘要:   In order to verify the implementation effect and the decision-making rationality of the transport investments in large-scale economic stimulus plan, the application of data envelopment analysis model and related software ,to calculate the changes of the scale efficiency and technical efficiency and comprehensive efficiency of the transport system as the investment target in a period of the large-scale infrastructure construction. Through the analysis of efficiency changes of traffic system, to determine the operation of the traffic system, to evaluate the decision rationality of the transportation infrastructure investment in the economic stimulus plan and making future direction and strength of the investment decision.  
  关键词: Construction Investment; Traffic Operation; Efficiency Analysis; Decision-making Evaluation  
  下载:         下载 [6 ]  
  vol   1 (1)  :649
 
   357. Driver Fatigue Detection System Based on Eye Movements
    作者姓名: Qingning Niu, Lisheng Jin, Haijing Hou, Huacai Xian, and Yanguang Qin  
  摘要:   Driver fatigue is a hazard state, which can easily lead to traffic accidents. To detect driver fatigue in real time, a novel fatigue detection system using support vector machine (SVM) based on eye movements is proposed. Eye movement data were collected using SmartEye system in a driving simulator experiment. Characteristic parameters, which include blinking frequent, gaze direction, fixation time and PERCLOS, were extracted based on the data using statistical method. The characteristic parameters were used to train and test SVM model. Experimental results show that this system achieves a satisfied performance, which demonstrate that eye movements can be used to detect driver fatigue in real time.  
  关键词: driver fatigue, eye movements, support vector machine (SVM), percentage of eye closure(PERCLOS)  
  下载:         下载 [6 ]  
  vol   1 (1)  :657
 
   358. Driver Fatigue Detection System Based on Eye Movements
    作者姓名: Qingning Niu, Lisheng Jin, Haijing Hou, Huacai Xian, and Yanguang Qin  
  摘要:   Driver fatigue is a hazard state, which can easily lead to traffic accidents. To detect driver fatigue in real time, a novel fatigue detection system using support vector machine (SVM) based on eye movements is proposed. Eye movement data were collected using SmartEye system in a driving simulator experiment. Characteristic parameters, which include blinking frequent, gaze direction, fixation time and PERCLOS, were extracted based on the data using statistical method. The characteristic parameters were used to train and test SVM model. Experimental results show that this system achieves a satisfied performance, which demonstrate that eye movements can be used to detect driver fatigue in real time.  
  关键词: driver fatigue, eye movements, support vector machine (SVM), percentage of eye closure(PERCLOS)  
  下载:         下载 [6 ]  
  vol   1 (1)  :657
 
   359. Driver Fatigue Detection System Based on Eye Movements
    作者姓名: Qingning Niu, Lisheng Jin, Haijing Hou, Huacai Xian, and Yanguang Qin  
  摘要:   Driver fatigue is a hazard state, which can easily lead to traffic accidents. To detect driver fatigue in real time, a novel fatigue detection system using support vector machine (SVM) based on eye movements is proposed. Eye movement data were collected using SmartEye system in a driving simulator experiment. Characteristic parameters, which include blinking frequent, gaze direction, fixation time and PERCLOS, were extracted based on the data using statistical method. The characteristic parameters were used to train and test SVM model. Experimental results show that this system achieves a satisfied performance, which demonstrate that eye movements can be used to detect driver fatigue in real time.  
  关键词: driver fatigue, eye movements, support vector machine (SVM), percentage of eye closure(PERCLOS)  
  下载:         下载 [6 ]  
  vol   1 (1)  :657
 
   360. Driver Fatigue Detection System Based on Eye Movements
    作者姓名: Qingning Niu, Lisheng Jin, Haijing Hou, Huacai Xian, and Yanguang Qin  
  摘要:   Driver fatigue is a hazard state, which can easily lead to traffic accidents. To detect driver fatigue in real time, a novel fatigue detection system using support vector machine (SVM) based on eye movements is proposed. Eye movement data were collected using SmartEye system in a driving simulator experiment. Characteristic parameters, which include blinking frequent, gaze direction, fixation time and PERCLOS, were extracted based on the data using statistical method. The characteristic parameters were used to train and test SVM model. Experimental results show that this system achieves a satisfied performance, which demonstrate that eye movements can be used to detect driver fatigue in real time.  
  关键词: driver fatigue, eye movements, support vector machine (SVM), percentage of eye closure(PERCLOS)  
  下载:         下载 [6 ]  
  vol   1 (1)  :657
 
   361. A Simulation Study on Night Vision Enhancement Systems
    作者姓名: Linzhen Nie and R. Mourant  
  摘要:   Night vision enhancement systems (NVESs) have been developed to improve visibility at night through supplementing drivers’ direct vision with additional information shown on a display, rather than replacing drivers’ direct vision. Existing studies have shown that NVESs may increase recognition distance, but may also increase drivers’ mental and visual distraction (eyes-off-road). Each scan of the display of the night vision enhancement system involves some visual and mental cost to the driver. This research focuses on developing an affordable and integrated experimental platform that can provide drivers using NVESs with a realistic nighttime driving experience. Study on both near-infrared (NIR) and far-infrared (FIR) NVESs’ overall benefits and driver distraction were conducted on this platform with the purpose of exploring both the advantages and disadvantages of current NVESs and making recommendation for future improvements. Twenty-four experienced drivers from Northeastern University (staff and students) participated in this study of NVESs. They used and tested NVESs systems in the Virtual Environments Laboratory and were required to complete two experimental trials, each individually. Results demonstrated that simulation provides a good opportunity to experience driving with a NVES, and also is a very good tool for conducting research on NVESs, especially in adverse weather conditions like fog.  
  关键词: Night Vision Enhancement System, Automatic Pedestrian Warnings, Simulation, Driving Simulator  
  下载:         下载 [6 ]  
  vol   1 (1)  :664
 
   362. A Simulation Study on Night Vision Enhancement Systems
    作者姓名: Linzhen Nie and R. Mourant  
  摘要:   Night vision enhancement systems (NVESs) have been developed to improve visibility at night through supplementing drivers’ direct vision with additional information shown on a display, rather than replacing drivers’ direct vision. Existing studies have shown that NVESs may increase recognition distance, but may also increase drivers’ mental and visual distraction (eyes-off-road). Each scan of the display of the night vision enhancement system involves some visual and mental cost to the driver. This research focuses on developing an affordable and integrated experimental platform that can provide drivers using NVESs with a realistic nighttime driving experience. Study on both near-infrared (NIR) and far-infrared (FIR) NVESs’ overall benefits and driver distraction were conducted on this platform with the purpose of exploring both the advantages and disadvantages of current NVESs and making recommendation for future improvements. Twenty-four experienced drivers from Northeastern University (staff and students) participated in this study of NVESs. They used and tested NVESs systems in the Virtual Environments Laboratory and were required to complete two experimental trials, each individually. Results demonstrated that simulation provides a good opportunity to experience driving with a NVES, and also is a very good tool for conducting research on NVESs, especially in adverse weather conditions like fog.  
  关键词: Night Vision Enhancement System, Automatic Pedestrian Warnings, Simulation, Driving Simulator  
  下载:         下载 [6 ]  
  vol   1 (1)  :664
 
   363. A Simulation Study on Night Vision Enhancement Systems
    作者姓名: Linzhen Nie and R. Mourant  
  摘要:   Night vision enhancement systems (NVESs) have been developed to improve visibility at night through supplementing drivers’ direct vision with additional information shown on a display, rather than replacing drivers’ direct vision. Existing studies have shown that NVESs may increase recognition distance, but may also increase drivers’ mental and visual distraction (eyes-off-road). Each scan of the display of the night vision enhancement system involves some visual and mental cost to the driver. This research focuses on developing an affordable and integrated experimental platform that can provide drivers using NVESs with a realistic nighttime driving experience. Study on both near-infrared (NIR) and far-infrared (FIR) NVESs’ overall benefits and driver distraction were conducted on this platform with the purpose of exploring both the advantages and disadvantages of current NVESs and making recommendation for future improvements. Twenty-four experienced drivers from Northeastern University (staff and students) participated in this study of NVESs. They used and tested NVESs systems in the Virtual Environments Laboratory and were required to complete two experimental trials, each individually. Results demonstrated that simulation provides a good opportunity to experience driving with a NVES, and also is a very good tool for conducting research on NVESs, especially in adverse weather conditions like fog.  
  关键词: Night Vision Enhancement System, Automatic Pedestrian Warnings, Simulation, Driving Simulator  
  下载:         下载 [6 ]  
  vol   1 (1)  :664
 
   364. A Simulation Study on Night Vision Enhancement Systems
    作者姓名: Linzhen Nie and R. Mourant  
  摘要:   Night vision enhancement systems (NVESs) have been developed to improve visibility at night through supplementing drivers’ direct vision with additional information shown on a display, rather than replacing drivers’ direct vision. Existing studies have shown that NVESs may increase recognition distance, but may also increase drivers’ mental and visual distraction (eyes-off-road). Each scan of the display of the night vision enhancement system involves some visual and mental cost to the driver. This research focuses on developing an affordable and integrated experimental platform that can provide drivers using NVESs with a realistic nighttime driving experience. Study on both near-infrared (NIR) and far-infrared (FIR) NVESs’ overall benefits and driver distraction were conducted on this platform with the purpose of exploring both the advantages and disadvantages of current NVESs and making recommendation for future improvements. Twenty-four experienced drivers from Northeastern University (staff and students) participated in this study of NVESs. They used and tested NVESs systems in the Virtual Environments Laboratory and were required to complete two experimental trials, each individually. Results demonstrated that simulation provides a good opportunity to experience driving with a NVES, and also is a very good tool for conducting research on NVESs, especially in adverse weather conditions like fog.  
  关键词: Night Vision Enhancement System, Automatic Pedestrian Warnings, Simulation, Driving Simulator  
  下载:         下载 [6 ]  
  vol   1 (1)  :664
 
   365. A Coordinate Transformation Method for Video and Radar-Based Driver Assistance System
    作者姓名: Enjun Wang, Jinyu Lei, Juan Zeng, and Xiaohui Yang  
  摘要:   To develop the Driver Assistance System for foggy weather will help to increase driving safety. This paper will introduce a method based on digital information from computer vision and millimeter-wave radar techniques to build a driver assistance system for foggy weather. The algorithm, which take advantage of Direct Liner Transformation method, is to perform image registration between the object ahead detected by millimeter-wave radar with a vision enhance scene in the foggy weather. The information based on millimeter-wave radar and digital image will be used to help drivers to drive with the good vision. The experimental results showed our Driver Assistant System is robust, the automatic registration is accurate.  
  关键词: Road traffic safety; millimeter-wave radar; image registration; foggy weather; direct liner transformation  
  下载:         下载 [6 ]  
  vol   1 (1)  :671
 
   366. A Coordinate Transformation Method for Video and Radar-Based Driver Assistance System
    作者姓名: Enjun Wang, Jinyu Lei, Juan Zeng, and Xiaohui Yang  
  摘要:   To develop the Driver Assistance System for foggy weather will help to increase driving safety. This paper will introduce a method based on digital information from computer vision and millimeter-wave radar techniques to build a driver assistance system for foggy weather. The algorithm, which take advantage of Direct Liner Transformation method, is to perform image registration between the object ahead detected by millimeter-wave radar with a vision enhance scene in the foggy weather. The information based on millimeter-wave radar and digital image will be used to help drivers to drive with the good vision. The experimental results showed our Driver Assistant System is robust, the automatic registration is accurate.  
  关键词: Road traffic safety; millimeter-wave radar; image registration; foggy weather; direct liner transformation  
  下载:         下载 [6 ]  
  vol   1 (1)  :671
 
   367. A Coordinate Transformation Method for Video and Radar-Based Driver Assistance System
    作者姓名: Enjun Wang, Jinyu Lei, Juan Zeng, and Xiaohui Yang  
  摘要:   To develop the Driver Assistance System for foggy weather will help to increase driving safety. This paper will introduce a method based on digital information from computer vision and millimeter-wave radar techniques to build a driver assistance system for foggy weather. The algorithm, which take advantage of Direct Liner Transformation method, is to perform image registration between the object ahead detected by millimeter-wave radar with a vision enhance scene in the foggy weather. The information based on millimeter-wave radar and digital image will be used to help drivers to drive with the good vision. The experimental results showed our Driver Assistant System is robust, the automatic registration is accurate.  
  关键词: Road traffic safety; millimeter-wave radar; image registration; foggy weather; direct liner transformation  
  下载:         下载 [6 ]  
  vol   1 (1)  :671
 
   368. A Coordinate Transformation Method for Video and Radar-Based Driver Assistance System
    作者姓名: Enjun Wang, Jinyu Lei, Juan Zeng, and Xiaohui Yang  
  摘要:   To develop the Driver Assistance System for foggy weather will help to increase driving safety. This paper will introduce a method based on digital information from computer vision and millimeter-wave radar techniques to build a driver assistance system for foggy weather. The algorithm, which take advantage of Direct Liner Transformation method, is to perform image registration between the object ahead detected by millimeter-wave radar with a vision enhance scene in the foggy weather. The information based on millimeter-wave radar and digital image will be used to help drivers to drive with the good vision. The experimental results showed our Driver Assistant System is robust, the automatic registration is accurate.  
  关键词: Road traffic safety; millimeter-wave radar; image registration; foggy weather; direct liner transformation  
  下载:         下载 [6 ]  
  vol   1 (1)  :671
 
   369. Shanghai Traffic Information Management and Evaluation System
    作者姓名: Min-hua Shao, Yan-lin Liu, and Li-jun Sun  
  摘要:   With the increasing interest in Intelligent Transportation System (ITS), the traffic data collection systems in many cities are constructed and expanded in recent years. All these data have built a good basis for the urban traffic managers to understand the real traffic conditions and future developing trend better. Trying to use these data well in this way, Shanghai Traffic Information Management and Evaluation System (SHTIMES) has been developed in Shanghai, China. The objective of SHTIMES is to integrate all the collected data from different sources and give a reasonable traffic operation evaluation so that the corresponding traffic managers can make their decision based on that. Three key aspects during SHTIMES development are addressed in this paper: Firstly, in the data collection aspect, the “closing ring” scheme is adopted for the surface road network, which can infer all the traffic flow over the network; secondly, in the model part, a united evaluation model for all the urban roads is introduced; finally, a C/S structure is used in the system design. All the functions related to calculation and are assigned to the server end and all the functions related to the information management and analyses are assigned to the client end.  
  关键词: Data collection system, Traffic flow derivation, Traffic operation evaluation, System design  
  下载:         下载 [6 ]  
  vol   1 (1)  :680
 
   370. Shanghai Traffic Information Management and Evaluation System
    作者姓名: Min-hua Shao, Yan-lin Liu, and Li-jun Sun  
  摘要:   With the increasing interest in Intelligent Transportation System (ITS), the traffic data collection systems in many cities are constructed and expanded in recent years. All these data have built a good basis for the urban traffic managers to understand the real traffic conditions and future developing trend better. Trying to use these data well in this way, Shanghai Traffic Information Management and Evaluation System (SHTIMES) has been developed in Shanghai, China. The objective of SHTIMES is to integrate all the collected data from different sources and give a reasonable traffic operation evaluation so that the corresponding traffic managers can make their decision based on that. Three key aspects during SHTIMES development are addressed in this paper: Firstly, in the data collection aspect, the “closing ring” scheme is adopted for the surface road network, which can infer all the traffic flow over the network; secondly, in the model part, a united evaluation model for all the urban roads is introduced; finally, a C/S structure is used in the system design. All the functions related to calculation and are assigned to the server end and all the functions related to the information management and analyses are assigned to the client end.  
  关键词: Data collection system, Traffic flow derivation, Traffic operation evaluation, System design  
  下载:         下载 [6 ]  
  vol   1 (1)  :680
 
   371. Shanghai Traffic Information Management and Evaluation System
    作者姓名: Min-hua Shao, Yan-lin Liu, and Li-jun Sun  
  摘要:   With the increasing interest in Intelligent Transportation System (ITS), the traffic data collection systems in many cities are constructed and expanded in recent years. All these data have built a good basis for the urban traffic managers to understand the real traffic conditions and future developing trend better. Trying to use these data well in this way, Shanghai Traffic Information Management and Evaluation System (SHTIMES) has been developed in Shanghai, China. The objective of SHTIMES is to integrate all the collected data from different sources and give a reasonable traffic operation evaluation so that the corresponding traffic managers can make their decision based on that. Three key aspects during SHTIMES development are addressed in this paper: Firstly, in the data collection aspect, the “closing ring” scheme is adopted for the surface road network, which can infer all the traffic flow over the network; secondly, in the model part, a united evaluation model for all the urban roads is introduced; finally, a C/S structure is used in the system design. All the functions related to calculation and are assigned to the server end and all the functions related to the information management and analyses are assigned to the client end.  
  关键词: Data collection system, Traffic flow derivation, Traffic operation evaluation, System design  
  下载:         下载 [6 ]  
  vol   1 (1)  :680
 
   372. Shanghai Traffic Information Management and Evaluation System
    作者姓名: Min-hua Shao, Yan-lin Liu, and Li-jun Sun  
  摘要:   With the increasing interest in Intelligent Transportation System (ITS), the traffic data collection systems in many cities are constructed and expanded in recent years. All these data have built a good basis for the urban traffic managers to understand the real traffic conditions and future developing trend better. Trying to use these data well in this way, Shanghai Traffic Information Management and Evaluation System (SHTIMES) has been developed in Shanghai, China. The objective of SHTIMES is to integrate all the collected data from different sources and give a reasonable traffic operation evaluation so that the corresponding traffic managers can make their decision based on that. Three key aspects during SHTIMES development are addressed in this paper: Firstly, in the data collection aspect, the “closing ring” scheme is adopted for the surface road network, which can infer all the traffic flow over the network; secondly, in the model part, a united evaluation model for all the urban roads is introduced; finally, a C/S structure is used in the system design. All the functions related to calculation and are assigned to the server end and all the functions related to the information management and analyses are assigned to the client end.  
  关键词: Data collection system, Traffic flow derivation, Traffic operation evaluation, System design  
  下载:         下载 [6 ]  
  vol   1 (1)  :680
 
   373. MTISS: A Novel Mobile Transportation Information Service System Based on SOA
    作者姓名: Weilong Cui, Yu Huang, Yong Gao, and Xiaowen Dai  
  摘要:   One of the major problems that limit the practical realization of Intelligent Transportation System is collecting and distributing transportation information rapidly and effectively. Aside from traditional passive means, mobile devices, such as smart phones, could be exploited to collect various types of transportation information from individuals in massive quantities interactively as well as deliver guidance and navigation signals to the public to achieve purposes like congestion avoidance. This paper proposes a Mobile Transportation Information Service System (MTISS) which integrates client-end applications with SOA-enabled server-end web services. A unified, loosely-coupled and scalable architecture is presented. Then a prototype on Android platform and Windows Communication Foundation (WCF) is implemented. The key techniques are discussed. Application scenario and the features of MTISS are addressed. Finally, experiments are conducted to evaluate the overall performance of the MTISS prototype and the results indicate that our system has high usability, scalability and efficiency.  
  关键词: intelligent transportation information, web services, mobile information service  
  下载:         下载 [6 ]  
  vol   1 (1)  :687
 
   374. MTISS: A Novel Mobile Transportation Information Service System Based on SOA
    作者姓名: Weilong Cui, Yu Huang, Yong Gao, and Xiaowen Dai  
  摘要:   One of the major problems that limit the practical realization of Intelligent Transportation System is collecting and distributing transportation information rapidly and effectively. Aside from traditional passive means, mobile devices, such as smart phones, could be exploited to collect various types of transportation information from individuals in massive quantities interactively as well as deliver guidance and navigation signals to the public to achieve purposes like congestion avoidance. This paper proposes a Mobile Transportation Information Service System (MTISS) which integrates client-end applications with SOA-enabled server-end web services. A unified, loosely-coupled and scalable architecture is presented. Then a prototype on Android platform and Windows Communication Foundation (WCF) is implemented. The key techniques are discussed. Application scenario and the features of MTISS are addressed. Finally, experiments are conducted to evaluate the overall performance of the MTISS prototype and the results indicate that our system has high usability, scalability and efficiency.  
  关键词: intelligent transportation information, web services, mobile information service  
  下载:         下载 [6 ]  
  vol   1 (1)  :687
 
   375. MTISS: A Novel Mobile Transportation Information Service System Based on SOA
    作者姓名: Weilong Cui, Yu Huang, Yong Gao, and Xiaowen Dai  
  摘要:   One of the major problems that limit the practical realization of Intelligent Transportation System is collecting and distributing transportation information rapidly and effectively. Aside from traditional passive means, mobile devices, such as smart phones, could be exploited to collect various types of transportation information from individuals in massive quantities interactively as well as deliver guidance and navigation signals to the public to achieve purposes like congestion avoidance. This paper proposes a Mobile Transportation Information Service System (MTISS) which integrates client-end applications with SOA-enabled server-end web services. A unified, loosely-coupled and scalable architecture is presented. Then a prototype on Android platform and Windows Communication Foundation (WCF) is implemented. The key techniques are discussed. Application scenario and the features of MTISS are addressed. Finally, experiments are conducted to evaluate the overall performance of the MTISS prototype and the results indicate that our system has high usability, scalability and efficiency.  
  关键词: intelligent transportation information, web services, mobile information service  
  下载:         下载 [6 ]  
  vol   1 (1)  :687
 
   376. MTISS: A Novel Mobile Transportation Information Service System Based on SOA
    作者姓名: Weilong Cui, Yu Huang, Yong Gao, and Xiaowen Dai  
  摘要:   One of the major problems that limit the practical realization of Intelligent Transportation System is collecting and distributing transportation information rapidly and effectively. Aside from traditional passive means, mobile devices, such as smart phones, could be exploited to collect various types of transportation information from individuals in massive quantities interactively as well as deliver guidance and navigation signals to the public to achieve purposes like congestion avoidance. This paper proposes a Mobile Transportation Information Service System (MTISS) which integrates client-end applications with SOA-enabled server-end web services. A unified, loosely-coupled and scalable architecture is presented. Then a prototype on Android platform and Windows Communication Foundation (WCF) is implemented. The key techniques are discussed. Application scenario and the features of MTISS are addressed. Finally, experiments are conducted to evaluate the overall performance of the MTISS prototype and the results indicate that our system has high usability, scalability and efficiency.  
  关键词: intelligent transportation information, web services, mobile information service  
  下载:         下载 [6 ]  
  vol   1 (1)  :687
 
   377. Impact of Variable Message Sign Text Layout on Recognition Time
    作者姓名: Er-hui Chen, Jing Liu, and Hongzheng Zhao  
  摘要:   Variable message signs can display a variety of information, the text layout is one of the factors which affects the driver's visibility. This paper studied the arrangement , spacing and line spacing of the text of the variable message signs impacting on recognition time. The results showed that word structure was the important factors which affected recognition time, the same word displayed in a line was shorter recognition time than in the two lines. Besides, if you didn’t consider the words structural damaged impacting on recognition time, the text arrangement of the two lines was shorter recognition time than one and three lines. With text spacing increased, the recognition time first decreased and then increased; with the increasing of the text line spacing, recognition time reduced.  
  关键词: Variable message signs; spacing; line spacing; arrangement; recognition time  
  下载:         下载 [6 ]  
  vol   1 (1)  :694
 
   378. Impact of Variable Message Sign Text Layout on Recognition Time
    作者姓名: Er-hui Chen, Jing Liu, and Hongzheng Zhao  
  摘要:   Variable message signs can display a variety of information, the text layout is one of the factors which affects the driver's visibility. This paper studied the arrangement , spacing and line spacing of the text of the variable message signs impacting on recognition time. The results showed that word structure was the important factors which affected recognition time, the same word displayed in a line was shorter recognition time than in the two lines. Besides, if you didn’t consider the words structural damaged impacting on recognition time, the text arrangement of the two lines was shorter recognition time than one and three lines. With text spacing increased, the recognition time first decreased and then increased; with the increasing of the text line spacing, recognition time reduced.  
  关键词: Variable message signs; spacing; line spacing; arrangement; recognition time  
  下载:         下载 [6 ]  
  vol   1 (1)  :694
 
   379. Impact of Variable Message Sign Text Layout on Recognition Time
    作者姓名: Er-hui Chen, Jing Liu, and Hongzheng Zhao  
  摘要:   Variable message signs can display a variety of information, the text layout is one of the factors which affects the driver's visibility. This paper studied the arrangement , spacing and line spacing of the text of the variable message signs impacting on recognition time. The results showed that word structure was the important factors which affected recognition time, the same word displayed in a line was shorter recognition time than in the two lines. Besides, if you didn’t consider the words structural damaged impacting on recognition time, the text arrangement of the two lines was shorter recognition time than one and three lines. With text spacing increased, the recognition time first decreased and then increased; with the increasing of the text line spacing, recognition time reduced.  
  关键词: Variable message signs; spacing; line spacing; arrangement; recognition time  
  下载:         下载 [6 ]  
  vol   1 (1)  :694
 
   380. Impact of Variable Message Sign Text Layout on Recognition Time
    作者姓名: Er-hui Chen, Jing Liu, and Hongzheng Zhao  
  摘要:   Variable message signs can display a variety of information, the text layout is one of the factors which affects the driver's visibility. This paper studied the arrangement , spacing and line spacing of the text of the variable message signs impacting on recognition time. The results showed that word structure was the important factors which affected recognition time, the same word displayed in a line was shorter recognition time than in the two lines. Besides, if you didn’t consider the words structural damaged impacting on recognition time, the text arrangement of the two lines was shorter recognition time than one and three lines. With text spacing increased, the recognition time first decreased and then increased; with the increasing of the text line spacing, recognition time reduced.  
  关键词: Variable message signs; spacing; line spacing; arrangement; recognition time  
  下载:         下载 [6 ]  
  vol   1 (1)  :694
 
   381. Research on Design of Urban Expressway Exit Sign Numbering
    作者姓名: Jiangqiang Wang, Yongchang Zu, Jian Lu, and Jingang Gu  
  摘要:   The exit number of urban expressway is one information contents of traffic guide sign. There is no one complete set of exit numbering rules on urban expressway at present in China, what is also in the national standard. In the paper, the related regulation in the national standard of Road Traffic Signs and Markings is referred, and the examples of the exit number of urban expressway in Beijing, Shanghai and Guangzhou are compared and analyzed. The classification of the urban expressway and the construction scale of urban expressway are comprehensively considered. According to information demand of traffic guide sign, the exit numbering rules of urban expressway which are conformed to provide the exclusive and exact exit information for drivers are established, so the drivers can identify and confirm the destination exit in little time to insure that the urban expressway is safety and smooth.  
  关键词: urban expressway; traffic guide sign; exit number; numbering rule  
  下载:         下载 [6 ]  
  vol   1 (1)  :702
 
   382. Research on Design of Urban Expressway Exit Sign Numbering
    作者姓名: Jiangqiang Wang, Yongchang Zu, Jian Lu, and Jingang Gu  
  摘要:   The exit number of urban expressway is one information contents of traffic guide sign. There is no one complete set of exit numbering rules on urban expressway at present in China, what is also in the national standard. In the paper, the related regulation in the national standard of Road Traffic Signs and Markings is referred, and the examples of the exit number of urban expressway in Beijing, Shanghai and Guangzhou are compared and analyzed. The classification of the urban expressway and the construction scale of urban expressway are comprehensively considered. According to information demand of traffic guide sign, the exit numbering rules of urban expressway which are conformed to provide the exclusive and exact exit information for drivers are established, so the drivers can identify and confirm the destination exit in little time to insure that the urban expressway is safety and smooth.  
  关键词: urban expressway; traffic guide sign; exit number; numbering rule  
  下载:         下载 [6 ]  
  vol   1 (1)  :702
 
   383. Research on Design of Urban Expressway Exit Sign Numbering
    作者姓名: Jiangqiang Wang, Yongchang Zu, Jian Lu, and Jingang Gu  
  摘要:   The exit number of urban expressway is one information contents of traffic guide sign. There is no one complete set of exit numbering rules on urban expressway at present in China, what is also in the national standard. In the paper, the related regulation in the national standard of Road Traffic Signs and Markings is referred, and the examples of the exit number of urban expressway in Beijing, Shanghai and Guangzhou are compared and analyzed. The classification of the urban expressway and the construction scale of urban expressway are comprehensively considered. According to information demand of traffic guide sign, the exit numbering rules of urban expressway which are conformed to provide the exclusive and exact exit information for drivers are established, so the drivers can identify and confirm the destination exit in little time to insure that the urban expressway is safety and smooth.  
  关键词: urban expressway; traffic guide sign; exit number; numbering rule  
  下载:         下载 [6 ]  
  vol   1 (1)  :702
 
   384. Research on Design of Urban Expressway Exit Sign Numbering
    作者姓名: Jiangqiang Wang, Yongchang Zu, Jian Lu, and Jingang Gu  
  摘要:   The exit number of urban expressway is one information contents of traffic guide sign. There is no one complete set of exit numbering rules on urban expressway at present in China, what is also in the national standard. In the paper, the related regulation in the national standard of Road Traffic Signs and Markings is referred, and the examples of the exit number of urban expressway in Beijing, Shanghai and Guangzhou are compared and analyzed. The classification of the urban expressway and the construction scale of urban expressway are comprehensively considered. According to information demand of traffic guide sign, the exit numbering rules of urban expressway which are conformed to provide the exclusive and exact exit information for drivers are established, so the drivers can identify and confirm the destination exit in little time to insure that the urban expressway is safety and smooth.  
  关键词: urban expressway; traffic guide sign; exit number; numbering rule  
  下载:         下载 [6 ]  
  vol   1 (1)  :702
 
   385. The Error Distinguishing of Automatic Identification System Based on Improved Evidence Similarity
    作者姓名: Feng Ma, Xiumin Chu, and Chenguang Liu  
  摘要:   There is no fault-tolerant design in Automatic Identification System data link, so the fault message is inevitable. The DS theory is able to simulate the artificial judgment on AIS messages, but the motion and lane evidences conflict to each other occasionally. The improved evidence similarity method would solve the problem, simulate the human thinking, take the evidence priorities as a new parameter to revised the combination, and improve the model. In field testing, the method shows very good performance.  
  关键词: DS Theory; Evidence Combination;AIS; Evidence Similarity  
  下载:         下载 [6 ]  
  vol   1 (1)  :715
 
   386. The Error Distinguishing of Automatic Identification System Based on Improved Evidence Similarity
    作者姓名: Feng Ma, Xiumin Chu, and Chenguang Liu  
  摘要:   There is no fault-tolerant design in Automatic Identification System data link, so the fault message is inevitable. The DS theory is able to simulate the artificial judgment on AIS messages, but the motion and lane evidences conflict to each other occasionally. The improved evidence similarity method would solve the problem, simulate the human thinking, take the evidence priorities as a new parameter to revised the combination, and improve the model. In field testing, the method shows very good performance.  
  关键词: DS Theory; Evidence Combination;AIS; Evidence Similarity  
  下载:         下载 [6 ]  
  vol   1 (1)  :715
 
   387. The Error Distinguishing of Automatic Identification System Based on Improved Evidence Similarity
    作者姓名: Feng Ma, Xiumin Chu, and Chenguang Liu  
  摘要:   There is no fault-tolerant design in Automatic Identification System data link, so the fault message is inevitable. The DS theory is able to simulate the artificial judgment on AIS messages, but the motion and lane evidences conflict to each other occasionally. The improved evidence similarity method would solve the problem, simulate the human thinking, take the evidence priorities as a new parameter to revised the combination, and improve the model. In field testing, the method shows very good performance.  
  关键词: DS Theory; Evidence Combination;AIS; Evidence Similarity  
  下载:         下载 [6 ]  
  vol   1 (1)  :715
 
   388. The Error Distinguishing of Automatic Identification System Based on Improved Evidence Similarity
    作者姓名: Feng Ma, Xiumin Chu, and Chenguang Liu  
  摘要:   There is no fault-tolerant design in Automatic Identification System data link, so the fault message is inevitable. The DS theory is able to simulate the artificial judgment on AIS messages, but the motion and lane evidences conflict to each other occasionally. The improved evidence similarity method would solve the problem, simulate the human thinking, take the evidence priorities as a new parameter to revised the combination, and improve the model. In field testing, the method shows very good performance.  
  关键词: DS Theory; Evidence Combination;AIS; Evidence Similarity  
  下载:         下载 [6 ]  
  vol   1 (1)  :715
 
   389. Research on Data Model of the Real-time Parking Information
    作者姓名: Yuejun Luo, Zheng Li, and Wang Peng  
  摘要:   Abstract: In car navigation applications, the real-time parking information is an important application in the future. But there is no standardized definition for the communication data model of the real-time parking information. The specifications are defined for the real-time parking information, where they are mainly expressed whether the parking is full or unoccupied, the parking jam information for the exits, fee information as well as parking information. And three-layer model is defined for the information dissemination to express the different detailed levels parking information.  
  关键词: parking information model; three-layer model ; data structure  
  下载:         下载 [6 ]  
  vol   1 (1)  :723
 
   390. Research on Data Model of the Real-time Parking Information
    作者姓名: Yuejun Luo, Zheng Li, and Wang Peng  
  摘要:   Abstract: In car navigation applications, the real-time parking information is an important application in the future. But there is no standardized definition for the communication data model of the real-time parking information. The specifications are defined for the real-time parking information, where they are mainly expressed whether the parking is full or unoccupied, the parking jam information for the exits, fee information as well as parking information. And three-layer model is defined for the information dissemination to express the different detailed levels parking information.  
  关键词: parking information model; three-layer model ; data structure  
  下载:         下载 [6 ]  
  vol   1 (1)  :723
 
   391. Research on Data Model of the Real-time Parking Information
    作者姓名: Yuejun Luo, Zheng Li, and Wang Peng  
  摘要:   Abstract: In car navigation applications, the real-time parking information is an important application in the future. But there is no standardized definition for the communication data model of the real-time parking information. The specifications are defined for the real-time parking information, where they are mainly expressed whether the parking is full or unoccupied, the parking jam information for the exits, fee information as well as parking information. And three-layer model is defined for the information dissemination to express the different detailed levels parking information.  
  关键词: parking information model; three-layer model ; data structure  
  下载:         下载 [6 ]  
  vol   1 (1)  :723
 
   392. Research on Data Model of the Real-time Parking Information
    作者姓名: Yuejun Luo, Zheng Li, and Wang Peng  
  摘要:   Abstract: In car navigation applications, the real-time parking information is an important application in the future. But there is no standardized definition for the communication data model of the real-time parking information. The specifications are defined for the real-time parking information, where they are mainly expressed whether the parking is full or unoccupied, the parking jam information for the exits, fee information as well as parking information. And three-layer model is defined for the information dissemination to express the different detailed levels parking information.  
  关键词: parking information model; three-layer model ; data structure  
  下载:         下载 [6 ]  
  vol   1 (1)  :723
 
   393. Integrating Real-Time Traffic Data and Mobile Health Diagnosis for the Mobile User First Aid
    作者姓名: Alfio Costanzo, Alberto Faro, Daniela Giordano, and Roberta Rappazzo  
  摘要:   The paper aims at illustrating how biometric data of a mobile user, such as the heart rate or the skin perspiration, taken by commercially available systems, may be stored through a Bluetooth interface on the user mobile to be processed by means of a simple expert system that takes into account both the possible pathologies and the current activity of the users to elaborate a first health diagnosis to help the remote medical centers in deciding the equipment type of the ambulance and the doctor specialties. Also, the paper points out how integrating the traffic information taken by various technologies and from people perceptions is possible to compute in real time the travel time of each road to find the minimum path to the accident position.  
  关键词: Real Time ITS, Traffic Monitoring Technology, Mobile Phone Sensing, Decision Support Systems.  
  下载:         下载 [6 ]  
  vol   1 (1)  :732
 
   394. Integrating Real-Time Traffic Data and Mobile Health Diagnosis for the Mobile User First Aid
    作者姓名: Alfio Costanzo, Alberto Faro, Daniela Giordano, and Roberta Rappazzo  
  摘要:   The paper aims at illustrating how biometric data of a mobile user, such as the heart rate or the skin perspiration, taken by commercially available systems, may be stored through a Bluetooth interface on the user mobile to be processed by means of a simple expert system that takes into account both the possible pathologies and the current activity of the users to elaborate a first health diagnosis to help the remote medical centers in deciding the equipment type of the ambulance and the doctor specialties. Also, the paper points out how integrating the traffic information taken by various technologies and from people perceptions is possible to compute in real time the travel time of each road to find the minimum path to the accident position.  
  关键词: Real Time ITS, Traffic Monitoring Technology, Mobile Phone Sensing, Decision Support Systems.  
  下载:         下载 [6 ]  
  vol   1 (1)  :732
 
   395. Integrating Real-Time Traffic Data and Mobile Health Diagnosis for the Mobile User First Aid
    作者姓名: Alfio Costanzo, Alberto Faro, Daniela Giordano, and Roberta Rappazzo  
  摘要:   The paper aims at illustrating how biometric data of a mobile user, such as the heart rate or the skin perspiration, taken by commercially available systems, may be stored through a Bluetooth interface on the user mobile to be processed by means of a simple expert system that takes into account both the possible pathologies and the current activity of the users to elaborate a first health diagnosis to help the remote medical centers in deciding the equipment type of the ambulance and the doctor specialties. Also, the paper points out how integrating the traffic information taken by various technologies and from people perceptions is possible to compute in real time the travel time of each road to find the minimum path to the accident position.  
  关键词: Real Time ITS, Traffic Monitoring Technology, Mobile Phone Sensing, Decision Support Systems.  
  下载:         下载 [6 ]  
  vol   1 (1)  :732
 
   396. Integrating Real-Time Traffic Data and Mobile Health Diagnosis for the Mobile User First Aid
    作者姓名: Alfio Costanzo, Alberto Faro, Daniela Giordano, and Roberta Rappazzo  
  摘要:   The paper aims at illustrating how biometric data of a mobile user, such as the heart rate or the skin perspiration, taken by commercially available systems, may be stored through a Bluetooth interface on the user mobile to be processed by means of a simple expert system that takes into account both the possible pathologies and the current activity of the users to elaborate a first health diagnosis to help the remote medical centers in deciding the equipment type of the ambulance and the doctor specialties. Also, the paper points out how integrating the traffic information taken by various technologies and from people perceptions is possible to compute in real