基于理想解法的偏好物元评价决策方法

针对以往理想解法(TOPSIS)对指标进行预处理引起信息损失,影响决策和评价准确性的不足,提出了一种基于理想解法的偏好物元评价决策方法.该方法根据物元分析理论,采用关联函数计算每个方案物元与理想物元和负理想物元的关联度,提出偏好物元--方案物元集中的最优物元,并以此确定最优方案.     

中国智能运输系统(ITS)的发展

论文概括论述了国内外智能文通系统工程的发展,特别是我国当前交通运输系统深化 的问题,论述了我国“十五”智能交通发展的指导方针政策以及开发的重点,论文对我国的发展智能交通的系统的重点问题都进行阐述.     

省级公路网规划中免OD调查的交通量预测方法

交通部颁发的《公路网规划编制办法》中规定的四阶段交通量预测方法需要以现状公路网OD调查结果为基础,而OD调查是一项耗费巨大财力、物力和时间的工作,并且调查所得也仅仅是不稳定的小样本抽样调查结果,实际应用存在一些问题.全国各省近30 a的公路建设积累了大量的工程可行性报告,并且这些可行性报告中关于交通量调查的数据也都曾耗费了大量投入,工程建设完成后就一直没有再被充分利用过.本中利用公路可行性报告数据,探索在区域路网规划中不进行网络OD调查条件下的交通量预测方法.这种预测方法可以节约大量的用于调查的经费和人力投入,也可以显著节省规划工作时间,而实用效果令人满意.     

From traces to trajectories: How well can we guess activity locations from mobile phone traces?

Passively generated mobile phone dataset is emerging as a new data source for research in human mobility patterns. Information on individuals’ trajectories is not directly available from such data; they must be inferred. Many questions remain in terms how well we can capture human mobility patterns from these datasets. Only one study has compared the results from a mobile phone dataset to those from the National Household Travel Survey (NHTS), though the comparison is on two different populations and samples. This study is a very first attempt that develops a procedure to generate a simulated mobile phone dataset containing the ground truth information. This procedure can be used by other researchers and practitioners who are interested in using mobile phone data and want to formally evaluate the effectiveness of an algorithm.To identify activity locations from mobile phone traces, we develop an ensemble of methods: a model-based clustering method to identify clusters, a logistic regression model to distinguish between activity and travel clusters, and a set of behavior-based algorithms to detect types of locations visited. We show that the distribution of the activity locations identified from the simulated mobile phone dataset resembles the ground truth better than the existing studies. For home locations, 70% and 97% of identified homes are within 100 and 1000 m from the truth, respectively. For work places, 65% and 86% of the identified work places are within 100 and 1000 m from the true ones, respectively. These results point to the possibility of using these passively generated mobile phone datasets to supplement or even replace household travel surveys in transportation planning in the future.     

基于物流业务英语交流课程项目化改革的调查分析

以《物流业务英语交流课程》为例,通过对其项目化改革前后教学情况的问卷调查、数据对比,找出项目化给专业英语教学带来的变化,提出改进后的课程项目设计简案.     

毛坝隧道贯通误差评定

通过对隧道施工中产生的贯通误差的测量、分析,来保证隧道的正常施工。     

Minimum acceptable time for turning off idling engines: Evidence from Taiwan

This paper examines the influence of different factors on motorist willingness to comply with idling stop regulations, as determined using stated preference analysis. Motorists were surveyed at urban roadsides in Taiwan, and the results obtained were analyzed using a partially adaptive model. The analysis showed that the standing time and turnoff idling engine while parking are both significant variables, and arise from risk aversion behavior. Environmental perceptions and convenience of use are the most influential factors, according to elasticity analysis. The study also verifies that a partially adaptive model is an appropriate model to consider censored data in a Triple-Bounded Dichotomous Choice analysis. These results will be useful as a reference for improving implementation of idling reduction regulations.     

基于SSH框架的学生适应性问卷调查系统的设计及实现

文中介绍了一种基于SSH框架技术的学生适应性问卷调查系统的研发方法。首先对SSH框架技术进行了介绍,然后从系统角色描述、系统使用流程、题目类型分析等方面分析问卷调查系统的需求,阐述了该系统基于SSH框架的架构设计、数据库设计、关键技术等,最后,对系统实现效果进行了总结。     

船舶检验与规则规范分类

船舶及其产品的检验分为法定检验和入级检验。在法定检验规则中，重点介绍了IMO的公约、规则、决议和通函的性质和特点，将与船舶有关的ILO第92号、第133号公约与MLC2006进行了比较，列出了各国部分法定检验机构的缩写。在入级检验规范中，涉及IACS共同规范、HCSR、统一要求和统一解释，并简要阐明13个IACS会员船级社的中英文全称、缩写、网址和E-mail。值得注意的是，规则和规范均处于不断修正中，必须采用合同签字日已生效的现行有效文本。