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随着我国新型城镇化战略、区域协同发展战略、交通强国战略等国家战略的进一步贯彻落实,都市圈和城市群逐步成为我国国民经济发展新的增长极。在跨市域、跨行政边界通勤规模日益扩大的同时,通勤者对于城际高速铁路的通勤需求也在不断增长。目前我国仍然缺乏相关的长距离快速通勤交通运输管理评价体系,本文通过对国内外相关研究和铁路服务标准的深度挖掘以及对我国城际高速铁路通勤现状的调查分析,构建了城际高速铁路通勤服务评价指标体系,包含3个一级指标、11个二级指标、35个三级指标,有助于我国目前城际高速铁路通勤水平的进一步研究和改善我国城际高速铁路通勤现状。 相似文献
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当前我国的经济发展模式已由高速增长转向高质量发展,由于“碳达峰,碳中和”的提出,作为碳排放主要来源之一的交通运输行业,积极推进运输结构调整,加快建设交通强国的任务迫在眉睫。在此宏观背景下,铁路作为是资源节约型、环境友好型运输方式,可在交通运输业减排中发挥重要作用,研究如何提高铁路客运市场份额对于实现交通运输行业减排具有重要意义。本文综述了10年来我国旅客运输市场主要运输方式的客运市场份额变动总体情况,主要表现为我国旅客运输结构逐渐优化,公路虽然是我国客运市场占有率最大的运输方式,但是客运市场份额逐步减小,铁路、民航、水运市场份额不断扩大;分析了铁路客运市场占有率变动的特点,以及铁路客运市场占有率增长的影响因素;研究了铁路客运市场份额发展趋势,运用二次指数平滑法对铁路客运市场份额进行预测,预测结果表明未来3年铁路客运市场份额将稳定增加,最后从发展铁路短途旅客运输、加大政府监管力度、优化列车开行方案、加强铁路与其他运输方式的衔接等方面提出了提高铁路客运市场份额的意见建议,为铁路旅客运输市场的发展提供参考。 相似文献
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推进交通运输与其他产业融合是贯彻党中央精神、加快交通强国建设的重要支撑。本文系统阐述了我国交通运输与其他产业的内在联系,剖析了融合的作用机理,对新时期交通运输与其他产业融合进行了定义,分析了融合的主要特征,提出了发展对策建议,对于指导交通运输与其他产业融合、推动交通运输行业高质量发展、建设交通强国具有重要意义。 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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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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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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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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《Transportation Research Part A: General》1991,25(6):407-418
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. 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