不要指望“一招就灵”

从<道条>中的"可以",到<道路旅客运输班线经营权招标投标办法>(简称<办法>)中的"国家鼓励",从业户声声"招投标办公室","线路批发公司"的质疑,到尽力向"公开、公平、公正、诚信"靠拢且追求稳定第一,客运线路服务质量招投标在道路客运业走过了漫长的路程.     

透视客运班线招投标改革——专访交通部公路科学研究院公路交通发展研究中心主任李亚茹

千呼万唤,六年磨砺.2008年7月8日,经第8次交通运输部部务会议通过,<道路旅客运输班线经营权招标投标办法>(简称<办法>)终于顺利出台,将于2009年1月1日起实施.     

道路客运班线经营权招投标中存在问题及对策

就青海省运管局实行道路客运班线经营权招投标工作的基本做法、存在的问题进行归纳、整理,并提出一些个人见解和意见。     

班线招投标莫成“水中月”

目前,班线经营权是道路客运企业的生命,客运企业无不把发展班线作为第一要务,不惜精力财力开发班线.随着近年来铁路、民航的强势崛起,各种运输方式和道路运输企业竞相出招,旅客争夺战愈演愈烈.在特定时空内,客运班线俨然成为一种稀缺资源.     

吉林客运市场公开招标

一项涉及10万从业者切身利益和全省5000多条客运班线的道路客运班线经营权有期限使用制度改革,正在吉林省有条不紊地进行.     

道路客运线路经营权招投标问题研究

近年来，在国家运输开放政策指导下，各级交通部门积极培育和发展道路运输市场，极大地促进了道路运输生产力的发展。由于受管理体制和市场机制不完善等多种因素的影响，客运市场中的一些深层次的矛盾逐渐显露，如运输市场主体过多，无序竞争与规模化、集约化经营的矛盾；现行管理机制与市场所需要的公平竞争、优胜劣汰机制不相适应的矛盾等。为此，以道路运输资源优化配置为切入点，对道路客运线路经营权进行招投标管理已成为改革的焦点。一、 道路客运线路经营权招投标的问题我国自广东省首先实施道路客运线路经营权招投标以来，已有浙江…     

江浙沪先行先试省际客运公交化

随着江苏、浙江、上海两省一市省级毗邻地区的交往日趋密切,市民出行需求逐年递增。2003年,长三角地区首次提出了道路运输一体化的合作理念。江、浙、沪两省一市交通运输管理部门经过多年的协作,在长途客运资源整合、区域品牌班线评选以及应急联动机制等方面取得了许多实质性的突破。为进一步满足江、浙、沪省际毗邻地区市民的出行需求,力争使长三角道路客运。体化工作在“创新驱动、转型发展”上取得实质性的进展,江苏省交通运输厅、浙江省交通运输厅、上海市交通运输和港口管理局于2011年在长三角省际毗邻地区开展了客运班线公交化试运行工作。     

打造现代道路运输业——《道路运输业"十二五"发展规划》前瞻

<运输经理世界>杂志组织行业优秀企业代表,和交通运输部道路运输司、交通运输部科学研究院、中国道路运输协会等领导一起讨论道路运输行业现代化的话题,我们觉得非常好.今天谭小平主任因为有事未能参加这个会议,我(余兴源)代表他就正在制订中的<道路运输业"十二五"发展规划>的总体编制思路和方向做一个解读,希望能对大家讨论行业发展的问题有所帮助.     

出租车经营权期限挂钩服务质量信誉考核

日前，交通运输部印发《出租汽车经营服务管理规定》（简称《规定》），对规范出租车经营权管理进行了制度设计。《规定》明确出租汽车的车辆经营权实行期限制，鼓励通过服务质量招投标方式配置，并建立完善市场退出机制，将经营权到期后能否继续经营与服务质量信誉考核结果进行挂钩。     

班线股份制推进温州客运集约化

温州的客运集约化首先表现为客运班线的集约化,即在一条班线或大部分路径重叠的几条班线上进行运力、经营权、经营主体的整合,组成股份制经营、公司化管理的经营实体,使运力的利用效益、班线服务质量、经营管理水平得以提高的一种形式.     

Analysis of factors affecting the choice of route of pedestrians

Pedestrians as compared to vehicular traffic enjoy a high degree freedom of movement even in heavily congested areas. Consequently, there are more alternative links available to pedestrians between a given origin‐destination (O‐D) pair. This paper describes a study done by the University of Calgary to evaluate the factors affecting the choice of route on intra‐CBD trips or trips within the Central Business District (CBD).

An origin destination survey conducted in downtown Calgary, Alberta enabled the identification of the most significant factors influencing the choice. These factors were analyzed in relation to the physical characteristics of the location, personal characteristics of the trip maker and the type of the trip.

It appears that most people chose the shortest link and factors such as the level of congestion, safety or visual attractions were only secondary. This suggests that the length should be made a major consideration when planning and designing pedestrian links.     

输油管道中原油乳状液的流变性研究

原油乳状液的流变性是原油开采后在管道中输送的重要研究方面,为了更好地研究这一性质,采用电动搅拌机、偏光显微镜以及流变仪等仪器来测定不同含水率的原油乳状液在不同条件下的黏度,观测不同含水率的原油乳状液在偏光显微镜下的形态。并且分别对原油乳状液的黏度与含水率之间的关系以及与剪切速率之间的关系进行研究,初步确定了所测区块原油乳状液的转相点以及该区块原油乳状液的流变特性,为生产中的油气集输提供了理论依据。     

Preliminary results of an analysis of areas of influence in Shanghai

The main deficiency of most current modeling approaches to transportation can be identified as neglect of the integration of existing geographical knowledge in regard to the ex ante transport/land use modeling approaches, with its focus on territorial dynamics and theory development. This paper addresses this aspect of the problem by introducing a theoretical and methodological framework for the analysis of the interrelationship between land uses. The analysis attempts to determine to what extent the functional land use in a city can be considered an ordered pattern. The order sought does not rely on purely spatial configurations, but on the correlation of transportation and land use. The first section of this paper focuses on theoretical considerations. It stresses the fact that conventional approaches do not apply in the present context. It then suggests an alternative based on areas of influence and measured in terms of level of attractance of land uses. The second describes a procedure based on this alternative following the remarkable contribution of Hanjoul, Beguin and Thill. An application of this procedure to the analysis of Shanghai is then examined. Finally, an evaluation of the strategies for optimizing the interrelationship between land uses is presented. The paper concludes with a possible research agenda.     

城市轨道交通杂散电流监测系统概述

介绍了城市轨道交通工程中杂散电流不同的监测系统的构成,分析了集中式、分散式和智能型等监测系统的配置和功能,以及智能型实时在线监测系统的重要意义,为轨道交通工程杂散电流监测系统的选择与应用提供参考。     

埋地管道防腐保温层失效评价

明确埋地管道防腐保温层的技术评价标准,对埋地钢质管道的安全运行,延长管道使用寿命具有重要意义。为了对埋地管道防腐保温层做出有效评价,从间接检测与开挖检测2个方面,结合现场检测数据,提出了基于防腐保温层的电流衰减率、绝缘电阻率、质量状况与厚度的分级评价标准及基于4种评价指标的综合评判方法。工程实践表明,该评价标准对防腐保温层是否存在失效能做出有效判断。     

实现多组态计量软件集中监控的可行性分析

天然气自动计量系统有多种组态软件,由于软件的不相通性,造成了计量系统数据采集的通用性差、数据传输与入库的时效性差、数据利用的可靠性低.结合各组态软件的实际情况,从设计上充分利用Oracle大数据处理能力以及Partition(分区表)的特性,实现历史数据的存储,应用WebService与COM+数据访问组件提供多层数据访问架构,采用OPC与DDE工业数据交换协议,实现了各站场计量数据的实时上传,为连续数据采集和实时监控提供了可能,节约了改造成本.     

注汽管道承压能力评估和实物试验验证

基于失效评估图技术对某注汽管道进行了承压能力评价,给出了管线在不同腐蚀壁厚情况下的极限承压能力和极限裂纹尺寸。并利用实物爆破试验验证了评价方法的安全性和有效性,通过对爆破断口进行宏观和微观分析,发现管段的开裂属于脆性开裂。     

Non-parametric analyses of efficiency of airports

This paper estimates the efficiencies and productivity changes of 12 international airports in the Asia-Pacific region based on data from 1998 to 2006. We apply stochastic frontier analysis (SFA) to compute efficiency estimates and use the Malmquist productivity index (MPI) to analyze productivity changes. We use the SFA model with a translog-type production function after testing the statistical hypotheses. According to the results of the SFA hypothesis tests, airports have experienced a technological regression; the deviations from the efficiency frontier are caused more by technical inefficiency than random noise. However, the inefficiency was found to decrease. The MPI reveals a declining trend resulting more from technological change than from efficiency change, with a decrease in inefficiency. Taken together, both the hypothesis tests and the MPI not only provide consistent conclusions, but also suggest that airports should concentrate on technological progress.     

波纹管应力分析研究进展

评述了波纹管应力理论研究方法的进展情况，围绕解析法、工程近似法和数值法，对波纹管理论研究中的一些主要成果作了较详细的回顾和总结，对各种研究方法作出了评价，展望了亟待解决的一些问题。     

Direct analysis of the perceived importance of attributes of reliability of travel modes in urban travel

Reliability of travel modes was found to be the most important characteristic of transportation systems in several attitudinal investigations of individual travel behavior. This paper represents the first part of a research effort aimed at gaining a better understanding of the characteristics of reliability of transportation modes in urban travel. In this research, reliability characteristics are identified; their importance relative to each other is assessed, and an insight into possible structure of an objective reliability index is discussed. The research is based on perceived values of reliability, which were identified through a large attitudinal survey conducted in the Chicago metropolitan area.