公路运输的发展对铁路现代化的影响及相应对策

归纳公路运输业的特点,分析公路竞争对铁路现代化发展的影响,建议铁路从速度、时间、价格、服务和行车密度等方面采取措施,应对来自公路的挑战。     

Exploring the use of travel information – identifying contextual market segmentation in Seoul, Korea

As the amount of information is rapidly growing, and ubiquitous urban environments are emerging, the question which kind of information to provide is a major challenge for commercial and public travel-information service providers alike. This paper reports the analyses of recent data, collected in Metropolitan Seoul, about the acquisition of travel information. The study applies CHAID analysis to find homogeneous segments in travel information acquisition. Findings indicate that contextual variables are crucial to explain information acquisition behaviour, depending on decision context. The implication is that both socioeconomic and contextual variables are important to better understand the acquisition (and provision) of travel information. The results have important implications for managers and policy-makers, in particular in the way they respond to dynamic, contextual market segmentation.     

旧水泥混凝土路面加铺沥青面层关键技术研究——以深圳市梅观高速为例

本文以深圳市梅观高速为例,在路基(堤)连接方面和路面连接方面,总结了国内类似工程的实践经验,对于类似旧路改造工程,有一定借鉴意义。     

传统储运企业向现代物流企业转型的策略研究 --基于资源整合和核心能力

本文分析了国内外物流企业资源整合和核心能力的研究状况,提出了基于资源整合和核心能力是企业成功转型的关键,同时分析了我国传统储运企业向现代物流企业转型的优势与劣势,提出了转型的具体策略。     

石油海运领域运筹优化方法应用研究综述

为研究运筹方法在石油海运领域的应用及前景,检索1980年至今的国内外相关文献,系统归纳提出石油海上运输优化问题的场景分类:海上运输优化、在港作业调度优化以及油船驳运,分析并对比了各研究的模型差异及算法优劣,最后提出了全局优化调度、根据实际添加特殊约束和设置变量、利用规划约束及人工智能等方式弥补线性规划求解的不足等研究建议。     

浅析路桥施工中预应力技术的应用

预应力混凝土技术所具有的高抗裂能力、高抗渗性能以及高刚度、高强度等特点使得预应力技术在我国路桥施工中得到广泛的应用。随着我国经济的快速发展,现代公路交通建设工程越来越多,公路路桥施工中预应力技术在这样的市场条件下得到了越来越多的应用。文中就路桥施工中预应力技术的应用进行了简要论述。     

浅谈城市道路设计

城市道路的建设发展将面临前所未有的机遇和挑战,方便快捷的交通能推动城市建设快步进入新纪元,因此城市道路规划、设计必须在可持续发展的战略原则。笔者叙述了城市道路的可持续设计要点,和城市道路相关可持续解决方案,及可持续设计理念在我国的应用现状及前景。     

物流业与交通运输经济联动发展的机制分析

在前人研究的基础上,对物流业与交通运输经济联动发展问题作了分析与介绍,指出了目前我国物流业发展面临的问题,阐述了这些问题对于交通运输经济的影响,最后对二者联动发展的机制作出分析,得出最终结论,以期能够促进我国物流业和运输业更快更好的发展。     

Transportation rates and plant location in oligopolistic competition with sequential entry

This paper examines the impact of quantity-discounted transportation rates on location patterns of oligopolistic competition with sequential entry. When transportation rates are constant, Hwang and Mai (1990) show that the entrant locates at the same point as the existing firms if the production function exhibits constant returns to scale. The entrant will locate farther away from (closer to) the market than the existing firms do if the production function exhibits increasing (decreasing) returns to scale. This paper shows that Hwang and Mai's results need not hold when transportation rates are a function of quantity shipped and distance traveled.