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旅客联运是整合多种运输方式的比较优势,支撑经济高效流通的运输业高级形态。我国空铁联运合作经历了定制班车模式、虚拟航班模式、系统对接模式三个阶段,但仍然存在联运标准体系不健全、联运网络覆盖不广泛、联运接续换乘不顺畅、联运信息共享不充分、联运服务保障不到位等诸多问题。对此,运用福利经济学理论,从消费者(旅客)福利和生产者(运输企业)利润的角度,深入分析空铁联运合作的经济学动因,并以提升旅客出行体验和提高企业运输效益为合作目标,探索提出空铁联运合作优化策略,为促进空铁联运深度合作,提升空铁联运运行效率,增强空铁联运产品竞争力,推动空铁联运规模化发展,构建一体化综合交通运输体系提供一定的理论参考价值。 相似文献
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本文从空铁联运发展综合交通运输体系、优化资源配置降低建设费用、有利京津冀区域合作等三个方面,对首都第二机场选址在北京正南方的大兴区提出不同看法。 相似文献
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铁水联运是我国综合运输体系中的重要组成部分,涉及铁路、水运等多种交通运输方式。基于技术作业流程,将铁水联运按装卸方式分为直接换装模式、水-铁模式和水-公-铁模式等三种模式,分别阐述其特点、适用场景及应用地点,并详细介绍了我国天津、青岛、武汉、重庆等海(水)铁联运重要港口的发展现状及规划情况,指出当前我国海(水)铁联运存在的主要问题,包括设施不配套、联运衔接不畅、合作机制不完善、成本高等等,由此提出合理调配资源、新建联运配套设施、设立无水港等解决思路,研究成果可为进一步提高我国铁水联运效率提供参考。 相似文献
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我国空铁联运发展面临的问题和建议 总被引:1,自引:1,他引:0
我国空铁联运发展仍处于起步阶段,无论是从客流量、运营模式还是旅客体验度上衡量,与国外成熟的空铁联运服务相比仍存在明显差距。从长远看,我国空铁联运发展主要面临着两方面的问题:一是能否培育足够大的空铁联运市场需求,二是能否建立支持空铁联运发展的体制机制。随着高铁的快速发展和我国综合交通格局的发展变化,应从国家层面重视铁路与民航的合理分工与合作问题,通过加强高铁与枢纽机场的无缝衔接、优化民航机场功能和航线网络、完善空铁联运相关体制机制等途径,推动铁路和民航形成互补共赢的发展格局。 相似文献
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多式联运发展趋势及我国的对策 总被引:5,自引:1,他引:5
本文研究了多式联运产生的背景、概念、内涵及其特征,在分析美国、欧洲和我国集装箱多式联运发展现状和存在问题的基础上,提出了促进集装箱多式联运发展的三大途径:运输技术、运输组织和公共政策,提出我国综合运输体系和集装箱多式联运的发展对策和建议。 相似文献
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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. 相似文献
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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. 相似文献
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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。 相似文献
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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。 相似文献
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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. 相似文献
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Joseph N. Prashker 《Transportation》1979,8(4):329-346
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. 相似文献