Using AHP to measure the perception gap between current and potential users of bus services

Abstract

This study develops a multicriteria evaluation of user perception towards bus transit services and measures the gap in the perceptions held by current and potential users. A review of the transport quality literature indicates that both preference and satisfaction measures have been implemented to provide a comprehensive perception-based evaluation of bus quality. Although attempts have been made to evaluate user perception through a separate analysis of each (preference and/or satisfaction), the application of multicriteria quality measures are limited. A multicriteria quality measure not only offers more than just information on the daily experience of users but also knowledge of the internal process of quality evaluation (drivers/barriers). The multicriteria measure utilises the data of 512 questionnaires, whereby user perceptions were expressed through judgments of importance and satisfaction based on a set of 29 quality indicators classified into six attributes. Firstly, the study develops analytical hierarchy process (AHP) models to measure user preference. Secondly, a weighted perception index (WPI) of both preference and satisfaction is developed through a multicriteria model. Finally, multivariate analysis of variance (MANOVA) is conducted to identify the level of variation in the perception of both current and potential users towards bus service quality. The results show that although both current and potential users place a higher importance towards the same indicators, they do not share the same pattern of preferences (values and/or order). In addition, the study found that the interaction between preferences and satisfaction generated new patterns of subjective evaluation, and that these patterns vary significantly by user category.     

What determines commute time choices? A structural equation modelling approach

Abstract

Many researchers have been attracted by the phenomenon of constant travel time, and the time spent on travel has been an important indicator of understanding travellers’ behaviours. This paper is based on a survey conducted in a university in London which includes both objective and subjective variables in relation to commute time and some demographic characteristics. Two conceptual structural models are examined in order to explore the factors determining travellers’ choices. Results of the analysis reveal some interesting relationships: (1) a positive relationship between age and commute time; (2) females are more likely to read or listen to music during their journeys, and their ideal commute time (ICT) and current commute time (CCT) generally tend to be longer; (3) academic staff tend to have the habit of working during their commute, administrative staff tend to commute longer while students tend to spend a shorter time commuting; (4) normally, a habit while travelling is significantly associated with CCT; those with a habit of reading or working during their commute journey tend to have longer commute times and (5) the relationship between CCT and commuters’ ICT and tolerable commute time is positive; both hypothesised causal relationships are significant so that a loop is formed between subjective and objective variables, and thus a dynamic modelling process could be envisaged as temporal sequences of those variables.     

模糊数学在边坡支挡方案优选中的应用

针对边坡支挡设计前期信息量少且设计方案影响因素多等问题,综合考虑边坡地质条件及支挡加固技术以及经济情况,将边坡支挡方案选择中的各种模糊因素转换为数学形式,运用模糊数学的基本原理,对所提出的方案进行量化分析,并建立模糊综合评判模型.通过计算,得到各方案的可选度,根据隶属度最大原则确定方案的优先次序,从而得到最优边坡支挡方案.     

驾驶心理对交通安全的影响

分析驾驶心理对交通安全造成的影响,并总结其中的主要因素.通过文献调研,综述了驾驶心理的主要过程和关键特征对交通安全的不同影响,并分析了驾驶心理对交通安全的影响方式.驾驶心理已经成为引发交通事故的重要因素之一,驾驶心理通过影响驾驶员的行为,间接地对交通安全产生影响,其中知觉、注意、态度、驾驶疲劳等是影响交通安全的主要因素.了解驾驶人行为的心理机制,有助于找到改善交通安全的方法,研究发现通过改变驾驶人态度是1种有效的途径.     

基于流程优化的公路设计项目管理技术

在分析当前公路设计流程存在的问题的基础上,提出基于ESIA方法的流程优化方案,可为解决公路勘察设计中项目管理的难题提供一定的参考与借鉴.     

基于工作过程系统化的电气自动化专业课程体系改革与实践

针对电气自动化专业人才社会需求的特点,文中采用基于工作过程系统化的课程体系开发方法,构建了该专业的专业课程体系,从而全面培养包括学生的社会能力、方法能力和专业能力在内的综合职业行动能力。     

城市水安全影响因素的AHP综合评价分析

水安全问题是整个城市安全问题的重要组成部分。该文在对水安全概念充分理解的基础上,利用多层次、多目标决策和模糊优选理论,建立了区域水安全评价的模糊优选模型,构建了水安全影响因素的层次结构图,并提出了采用层次分析法(AHP)对各种影响因素的重要性进行分析的思路。     

摩托车主副轴冷挤压模具早期失效原因分析

Cr12MoV属高碳高合金钢,强度较高,热塑变形抗力较大,变形温度区狭窄,易锻裂。锻造时要严格控制锻造温度,温度下降时立即返炉;锻打时严格执行“轻-重-轻”规律不宜过重,避免锻造变形时产生裂纹形成裂纹源;棱角要轻击倒平,避免温差和附加应力引起角裂;锻造过程中要注意观察,镦斜、拔歪要及时纠正,发现裂纹要立即去除消除裂纹源。     

北京市道路交通流实时动态信息系统的研究

北京作为一个发展中的特大城市,城市交通管理出现了前所未有的机遇和挑战。特别是2008年,在北京举办奥运会对北京交通面临巨大的压力.本文介绍了在北京建立道路交通实时动态信息系统的必要性和迫切性,提出了北京道路交通实时动态信息系统的总体框架,包括系统的概念、基本结构、系统的技术要求,北京道路交通实时动态信息系统的建设工程,其中涉及交通实时动态信息采集子系统,交通实时动态信息的处理与分析子系统,交通实时动态信息发布子系统和系统的总体协调等.     

TMIS工程的实施管理

介绍TMIS工程实施管理的概念、目标和原则,分阶段总结工程实施管理的主要内容,并对未来的铁路信息化建设做出简要展望.