客运服务综合控制系统的设计与实现

分析车站客运信息发布的现状,提出客运服务信息综合控制系统的设计目标,从功能、网络和软件结构等方面介绍系统的构成,描述系统实现过程中所采用的技术,最后对系统的技术特性、应用情况进行总结.     

编辑部关于发表“国家中长期交通运输规划摘要”的决定——国家《中长期铁路网规划》内容简介

交通运输事关国民经济发展和百姓生活的最基本需求．与中国经济的成长一样，我国交通运输业也历经了从传统的计划经济向市场经济转型的过程．作为国民经济发展的基础，和其他行业相比，交通运输具有准公共特性．为真正将国家意志体现到交通运输能力供给中，遵循本届政府决策，建设项目“规划先行”的原则，国家发展和改革委员会会同铁道部、交通部等有关单位，按照全面建设小康社会宏伟目标的要求，以科学发展观为指导，在充分考虑我国土地、人口等资源分布的基础上，将交通运输发展规划理论与交通发展实践相结合，组织编制了《中长期铁路网规划》、《高速公路网规划》、《农村公路建设规划》、《长江三角洲、珠江三角洲、渤海湾三区域沿海港口建设规划（2004年-2010年）》和《环渤海京津冀地区、长江三角洲地区、珠江三角洲地区城际轨道交通网规划》，现已完成并正式颁布实施．上述5项规划从不同层面反映了国家交通资源的空间布局与国家生产力布局的结合，国家综合交通体系发展方向和重点；体现了在市场经济条件下，如何结合中国的具体实际充分发挥各种运输方式的技术经济优势，做好运输资源的配置，并更加突出了效率与公平．对于加快我国铁路与高速公路的发展，促进综合交通网络的形成，加速区域现代综合运输体系建设，全面增强运输普遍服务能力，提升综合交通的生产力水平和服务水平，都具有十分重要的指导作用．     

A study of traveler behavior under traffic information-provided conditions in the Beijing area

ABSTRACT

The quality of traffic information has become one of the most important factors that can affect the distribution of urban and highway traffic flow by changing the travel route, transportation mode, and travel time of travelers and trips. Past research has revealed traveler behavior when traffic information is provided. This paper summarizes the related study achievements from a survey conducted in the Beijing area with a specially designed questionnaire considering traffic conditions and the provision of traffic information services. With the survey data, a Logit model is estimated, and the results indicate that travel time can be considered the most significant factor that affects highway travel mode choice between private vehicles and public transit, whereas trip purpose is the least significant factor for private vehicle usage for both urban and highway travel.     

长深高速公路遵化至南小营段运营适应性分析

对长深高速公路遵化至南小营段高速公路运营适应性、纵坡路段服务水平及行车安全性进行分析,提出此路段应设置爬坡车道,并对路线服务性做全面评价,指出此路段平纵线形组合的优缺点及适应性。     

Customers’ selections between premium electric taxis and liquefied petroleum gas taxis

Reducing roadside emissions is a common challenge in metropolitan cities. In Hong Kong, conventional liquefied petroleum gas taxis are one of the main contributors to roadside emissions as they operate on the streets 24 h a day with a long daily driving mileage. Moreover, these taxis suffer from a severely poor service reputation. To enhance the environmental friendliness and service quality of the taxi industry, this study explores the market potential of operating premium electric taxis in the dispatching mode. A stated preference survey was conducted to 1410 taxi customers about their taxi-riding choices between premium electric taxis and conventional liquefied petroleum gas taxis. In total, 5640 observations were obtained and used to develop a series of binary logistic regression models with different model formulations for the determination of the significant factors influencing customers’ selections. The findings indicate that walk time to and wait time for taxis were the most critical concerns to the customers, and they were more willing to take premium taxis if their journey distance was longer and their desired improvement on taxi service quality was greater. The socio-demographic status of taxi customers also influences their choices. The associated policy implications are discussed for promoting taxis with better service quality and fewer roadside emissions. The findings provide some policy insights to other international cities that have a similar taxi market to Hong Kong.     

网络环境下科技查新及其存在的问题研究

本文针对网络环境下科技查新工作,对科技查新与信息检索、信息分析、竞争情报之间的关系进行了辨析,剖析了影响科技查新的主要因素,并从提高查新人员的整体素质、制定查新工作统一标准、拓展文献检索手段、加强查新员与委托人之间的交流等方面提出了相应的提高科技查新质量的措施。     

Untangling process complexity in logistics delivery services with unpredictable service sequences: a mixed-method study of chemical tanker port calls

We explore the complexity issue relevant to a logistics service process characterized by unpredictable service stages and service sequences in the context of chemical tankers’ call in the Port of Houston. The operational dimensions of uncertainty and conflict surrounding process complexity are examined through a mixed-methods approach using both qualitative and quantitative data collected from the Port of Houston. We propose a taxonomy to classify several uncertainty and conflict factors emerged from our qualitative analysis, including structural conflict, structural uncertainty, infrastructural conflict, and infrastructural uncertainty. The case study findings are validated and triangulated by a quantitative analysis which quantifies the time and cost impacts of unproductive chemical tanker movement on port-call service performance. We contribute to the complexity theory by introducing four dimensions of process complexity to the stream of process-oriented logistics service research. These four complexity dimensions can be used by managers to untangle their process complexity. Our pseudo-service-stage based mapping technique will also be valuable for managers to visualize their service processes with unpredictable service sequences. Finally, we call for future research on synchronization across operational processes between service stages.     

动力定位风电安装船冷却水系统设计

动力定位等级分别为DP-1和DP-2的风电安装船。其冷却水系统设计有较大差别。文章介绍1200t自升自航式风电安装船的冷却水系统用户,分析不同工况下各冷却水系统用户的运行情况;为满足各工况下各用户对冷却水的需求,对该船型动力定位等级为DP-1和DP-2时的冷却水系统分别进行设计计算。     

公路客运的公司化经营模式探析

转变经营模式，逐步实现公路客运的公司化、集约化经营是公路客运企业的普遍共识。公司化经营是企业追求利润最大化的必然要求，建立公路客运公司化经营模式，实行对司乘人员的约束与激励机制，采用科技手段监控，有利于发挥市场机制的作用，确保公路运输安全生产。     

205国道沥青路面罩面维修工程试验方案

通过对沥青玛蹄脂碎石混合料（SMA）各项物理力学指标的试验分析，得到最佳油石比为5.7％-6.0％、纤维添加量为4‰，应用到205国道骆湖-佗城段三级路原有沥青公路罩面维修工程中获得成功，效益明显。