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1. A Predictive Analysis of Wuhan Logistics Demand Based on Multiple Linear Regression Model | |||
DING Qi | |||
Transportation Engineering 22 March 2021 | |||
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Abstract:Data of Wuhan logistics demand from 2009 to 2019 was collected, uses the measurement software Stata to conduct statistical analysis of the data and test and modify the model, selects the optimal explanatory variable, and establishes and identifies the factors affecting the Wuhan logistics Demand as a multiple linear regression model. The result shows that the output value of the secondary industry is an important factor affecting wuhan logistics demand, and it is predicted that the overall logistics demand of Wuhan will show a rising trend in the next few years. | |||
TO cite this article:DING Qi. A Predictive Analysis of Wuhan Logistics Demand Based on Multiple Linear Regression Model[OL].[22 March 2021] http://en.paper.edu.cn/en_releasepaper/content/4754016 |
2. Car Capacity near a Curbside Stop with Mixed Traffic Flow | |||
YANG Xiaobao,HUAN Mei | |||
Transportation Engineering 11 January 2013 | |||
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Abstract:This paper proposes a car capacity model for mixed traffic flow near the curbside stop. When a bus dwells at the stop in the non-motor lane, bicycles will change to the motor lane. Thus, the presence of a stopped bus creates a temporary car-bicycle conflict, reducing the road capacity. In addition, the car-bus conflict takes place when a bus departs from the stop to the motor lane. The conflict between different streams can be represented by an M/G/1 queue. Car capacity near the stop can be derived by iteratively computing the service time of the M/G/1 queue. The analysis shows that both bus stream and bicycle stream have significant effects on car capacity. | |||
TO cite this article:YANG Xiaobao,HUAN Mei. Car Capacity near a Curbside Stop with Mixed Traffic Flow[OL].[11 January 2013] http://en.paper.edu.cn/en_releasepaper/content/4511377 |
3. Reliability of estimating equilibrium speed-spacing relation with trajectory data | |||
WANG Hao,YANG Wanbo | |||
Transportation Engineering 23 November 2012 | |||
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Abstract:This paper studies the reliability of estimating the equilibrium speed-spacing relationship from the dynamic trajectory data. Empirical trajectories with long durations are used to extract the near equilibrium data and the dynamic trajectory data. Two car-following models, the Optimal Velocity Model (OVM) and the Intelligent Driver Model (IDM) are applied for the model calibration from the individual trajectory. A root mean square error based indicator is introduced to measure the performance of the model estimation for the equilibrium speed-spacing relationship. Seven factors that influence the model estimation are presented, and the correlations between factors and estimation performance are analyzed based on the ordered logistic regression. It is found that the OVM performs the best in estimating the equilibrium speed-spacing relationship. The results of ordered logistic regression indicate that long trajectory duration and multiple dynamic types are beneficial to the reliability of the estimation for the equilibrium speed-spacing relationship. | |||
TO cite this article:WANG Hao,YANG Wanbo. Reliability of estimating equilibrium speed-spacing relation with trajectory data[OL].[23 November 2012] http://en.paper.edu.cn/en_releasepaper/content/4496494 |
4. Constraint Handling Methods for Management Systems of Pavement Maintenance and Rehabilitation | |||
He Zhi-qiang,Sun Xiao-ling | |||
Transportation Engineering 02 October 2008 | |||
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Abstract:The rate of good level highway in the network is the most important evaluation criteria on the pavement maintenance and rehabilitation quality in China. In this paper, we propose two discrete optimization models in different rate of good level highway constraint handling Methods. These optimal decision models are formulated as linear integer programming problems with binary decision variables. The objective function and constraints are based on the pavement performance and prediction model using the Pavement Condition Index (PCI). Numerical experiments are carried out with the data from a highway system in Sichuan Province. | |||
TO cite this article:He Zhi-qiang,Sun Xiao-ling. Constraint Handling Methods for Management Systems of Pavement Maintenance and Rehabilitation[OL].[ 2 October 2008] http://en.paper.edu.cn/en_releasepaper/content/24512 |
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