Traveler satisfaction in rapid rail systems: The case of Istanbul metro

Multifaceted characteristics of urban travel have an impact on the passengers' overall satisfaction with the transport system. In this study, we investigate the interrelationships among traveler satisfaction, travel and traveler characteristics, and service performance in a multimodal network that comprises of a trunk line and its feeder lines. We analyze the factors influencing the choices of access to rail transit stations and the satisfaction of transit travelers with the rapid rail transit systems. We quantitatively study these relationships and demonstrate the complexity of evaluating transit service performance. Since the interrelationships among variables affecting this system are mainly stochastic, we analyze the satisfaction with transit system problem using a Bayesian Belief Network (BBN), which helps capture the causality among variables with inherent uncertainty. Using the case of Istanbul, we employ the BBN as a decision support tool for policy-makers to analyze the rapid rail transit services and determine policies for improving the quality and the level of service to increase the satisfaction with transit system. In the case study, satisfaction with accessibility and access mode variables are found to be more effective variables than total travel time for travel time satisfaction, confirming the significant role of access in multimodal travels.     

火力发电厂机组启动阶段铁含量测定方法改进的探讨

由于机组启动时候对给水、凝结水的含铁量要求较高,只有其合格才允许进行机组启动操作的下一步操作,而目前常用的测定铁含量的方法耗时较多,在机组启动过程中很难适应机组启动要求。通过大量实验,对目前国标规定的实验方法进行了一些改进,可以快速测定含铁量,误差完全可以满足机组启动需求。     

灰色预测原理在工程估价中的新应用

工程快速估价是投资决策的重要内容,同时工程估价还是工程造价控制的前提,是工程项目可行性研究的前提,也是招投标制定标底的依据,而工程概预算编制方法存在速度慢,周期长等缺点,针对同类别的工程的各项主要影响因素进行分析,通过灰色系统理论的相关原理确立一种新型的计算方法,建立工程快速估价模型,可省去大量的繁琐计算,为快速做出工程估价提供科学依据。     

大直径立井井筒平面布置快速施工技术

较大直径的井筒,在施工设备选型及布置是比较容易;但在快速施工中井筒平面布置的优化尤为重要,例如大提升机、大吊桶,大整体液压模板等立井施工机械化作业线。大海则项目部月平均成井110m,最高月成井120m.工程质量优良。井筒平面布置的优化,为安全快速施工创造了良好的条件。     

快速城市化时期新兴中等城市建筑发展浅谈——以山东省日照市为例

文章以日照市为例,审视了三十年以来日照市城市建筑的发展历程,总结其建筑发展特征、影响其特征的各类因素,反思中等城市建筑发展中存在的为题,对城市建筑发展态势进行判断,提出中等城市建筑发展的引导策略,以期对中等城市建筑发展起到一定的指导意义。     

浅谈城市大运量公交车辆的发展与应用

快速公交系统(Bus Rapid Transit,BRT)是一种介于地铁与常规公交之间的城市公共交通系统,基于专用的路权、大运量的现代化公交车辆、先进的售票系统、公交优先信号控制、先进的乘客信息系统等技术,提供低成本高品质的公共运输服务。快速公交系统的优势已赢得了我国许多大中型城市的认同,已有北京、杭州、常州等多个城市具有商业运营的快速公交系统。快速公交系统的发展带动了公交车辆的大型化及现代化。对我国大部分的城市,建设真正意义上的快速捷运系统,并分担较多的城市交通量,需要时间。作为过渡阶段,大运量、现代化的公交车辆用于主要的常规公交线路上,将有助于部分地缓解我国常规公交存在的拥挤、服务品质低等问题。     

如何对待GDP的快速增长

GDP是世界各国用来测量本国的存量财富和经济产出时流量变化最常用的指标，我们如何对待GDP的快速增长，这与贯彻落实科学发展观有密切关系。本文通过对我国近年来GDP快速增长及经济发展中存在问题的分析，认为：我们需要GDP快速增长，但不能将此作为经济社会发展的惟一目标，GDP的增长必须与经济社会全面发展相协调。     

快速原型制造技术的应用及发展前景

快速原型技术是当前发展迅速的一种现代先进制造技术。该文介绍了几种典型的快速原型技术的工艺原理，论述了它在模具制造、产品开发、医疗器械等领域的应用现状以及发展前景。     

基于快速成形制造技术的快速模具制造

基于快速成形制造技术的快速模具制造 (RPM -RT)是当前很有发展前景的先进模具制造方法。本文介绍了已研究开发并得到应用的快速制模方法     

Identifying resident preferences for bus-based and rail-based investments as a complementary buy in perspective to inform project planning prioritisation

Much of the debate associated with the development of new public transport infrastructure appears to have an emotional bias with communities in favour of one mode, especially rail. This, in turn, carries much sway at the political level as if there is no budget constraint or consideration of value for money and coverage. This paper presents a stated choice experiment to investigate this context as two unlabelled options described by 20 potential drivers of community preferences for improved public transport. Each choice scenario is conditioned on a given route length but with different costs, reflecting different modal investment options for the same route length. To establish whether a modal bias exists within and between geographical jurisdictions, the choice scenario is followed by a labelling of each investment option to reveal whether the option is bus rapid transit (BRT) or light rail transit (LRT). Data from all eight capital cities of Australia, collected in mid-2014, form the empirical setting. Mixed logit random regret models provide new evidence on the nature and extent of community modal bias in this choice setting. The paper also proposes a complementary tool to benefit-cost analysis that uses the residence preferences model to show, through scenario analysis, the potential gains in public support for BRT over LRT. The results suggest that BRT should be in the mix of candidate projects if more than one mode is considered and not ignored, as is so often the case in developed economies.