Assessing carbon reduction effects toward the mode shift of green transportation system

Plans are underway to introduce green transportation systems at Taiwan's famous scenic spot, Sun Moon Lake, to reduce carbon emissions. Carbon reduction effects after changing the current lake tour modes are assessed using a nested logit model with a stated preference survey, which investigated tourists' choice preferences. The empirical results reveal that the modes of electric bus, electric vehicle sharing, and bike are clustered in the same competitive group. Travel cost, in‐vehicle travel time, and out‐vehicle travel time are found to be statistically significant with the expected negative effects. In particular, the attribute of carbon reduction is only significant for green tourists, who are willing to pay US$ 3.5/kg of carbon saved. The result indicates that more efficient carbon reduction is possible by restricting the usage of gasoline vehicles rather than improving the service levels of low‐carbon modes. Notably, the effect of parking charges on emission reduction is equal to the amount of carbon dioxide absorbed by 4511 trees per day. Copyright © 2016 John Wiley & Sons, Ltd.     

深圳地铁2号线车辆基地的功能定位

结合国内几个主要城市地铁车辆的检修方式,对地铁车辆的检修制度和检修资源共享等进行分析;根据深圳地铁线网和建设运营管理体制的特点,对深圳地铁2号线车辆基地的资源共享进行分析论证,认为该方案是经济合理的.     

CBD建设项目差异化停车配建研究

以天津市滨海新区响螺湾商务区中惠熙元广场建设项目为例,研究CBD建设项目停车位建设应采用差异化标准.考虑对用地性质、项目位置、小汽车出行率、停车位共享等多重因素,对其实际停车需求进行科学预测.本研究对于CBD建设项目的停车位合理建设具有指导作用.     

云计算在国家骨干高职院校建设中的应用探讨——以南通航运职业技术学院为例

文章论述了云计算的原理、概念,并以南通航运职业技术学院为例,探讨了云计算在国家骨干高职院校建设中的应用服务及实现,保证了建设的安全性并带来可观的经济效益,为国家骨干高职院校的建设工作提供了参考。     

Work and home location: Possible role of social networks

This research explores to what extent people’s work locations are similar to that of those who live around them. Using the Longitudinal Employer-Household Dynamics data set and the 2000 decennial census, we investigate the home and work locations of different census block residents in the Twin Cities (Minneapolis-St. Paul) metropolitan area. Our aim is to investigate if people who share a residence neighborhood also share work locations to a degree beyond what would be explained by distanhe observed patterns is the role neighborhood level and work place social networks play in locating jobs and residences respectively.     

城市公共自行车准动态调度方法

针对城市公共自行车系统日常调度工作量大问题,提出一种城市公共自行车准动态调度方法. 该方法通过分析公共自行车站点容量、日均租还差和各时段租还量间的约束关系,评估站点的调度频次并划分站点类型;以日均调度任务量均衡和日均调度里程最低为目标,以调度车容量为约束条件,优化日常调度路径;与经验调度法进行了对比,验证了本方法的有效性. 结果表明：在调度数量方面,准动态调度方法2018 年1 月周日均和月日均调度工作量分别为3 872 次和4 247 次,较同月实际值5 690 次降低了32%和25%;在调度里程方面,准动态调度方法的周日均行驶里程和月日均行驶里程分别为94.7 km和103.6 km,较同月实际调度里程113.1 km分别降低了16%和8%.该方法对宁波公共自行车日常调度具有良好的实践价值.     

铁路动态信息共享Web服务调用框架

J2EE体系结构已经成功地引入铁路信息共享研究中来,并对铁路信息共享研究产生了巨大的推动作用.在此基础之上,将新兴的Web服务技术引入铁路信息共享研究,并提出相应的调用框架,可进一步扩展铁路信息共享的范围.     

基于SEM的共享单车使用决策研究

为探索用户对共享单车的使用决策形成过程,基于结构方程模型（Structural Equation Model, SEM）,以济南市历城区和历下区564 份用户骑行问卷数据为研究对象,将共享单车服务质量、环境质量、用户的忍受疲劳程度等因素作为潜变量,将出行距离、用户可接受骑行时长、温度、地势、车体质量等因素作为显变量,量化了外生潜变量与显变量之间、内生潜变量与显变量之间以及外生潜变量与内生潜变量之间的复杂关系,构建了共享单车使用决策模型。研究结果表明,用户的忍受疲劳程度在影响使用决策上起主要作用,其次是服务质量,环境质量的影响最小。在此基础上,提出了针对共享单车管理与投放的合理化建议,以促进运营企业提高服务水平、资源利用效率和经营效益。     

Workshop report - Benchmarking the outcome of competitive tendering

Workshop 1 was concerned to identify the real results of competitive tendering, and experience on how to make it work better, using evidence from the rail and bus sectors in a large number of countries spread around the world. It was found that competitive tendering had generally been successful in terms of quality and costs, but problems had occurred in a number of cases, so careful attention must be paid to the design of tendering exercises, details of the contract, risk-sharing arrangements and the approach to any re-negotiation found to be necessary. As a result, an important conclusion is that the tendering authority needs a high degree of expertise in these issues; any thought that competitive tendering relieves the public authority of the need for expertise in public transport is mistaken.     

多线共用 AFC 系统线路中心设计探讨

以北京轨道交通线网多线共用AFC系统线路中心( MLC)的工程设计为例,从国内轨道交通线网AFC系统架构设计现状着手,分析目前存在的问题;从MLC建设目的出发,结合北京市轨道交通线网规划情况及建设时序,对MLC建设方案进行比选,确定北京市轨道交通MLC建设方案.在我国城市轨道交通业界首次提出MLC的概念并力求投入应用,以期对今后国内外轨道交通线网AFC系统线路中心(LC)的资源共享设计研究有所指导和参考.