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<正> 欧盟航空运输市场的一体化是全球国际航空运输市场自由化和全球化的重大进展。从80年代中后期以来,欧盟通过3个一揽子的自由化决案,终于在1997年形成统一的航空运输市场。2年来的进展表明真正一体化和自由化的欧盟统一航空运输市场还远未实现,面临许多有待克服的有形或无形的障碍。但欧盟的航空运输市场一体化对国际航空运输的发展仍具有极大的意义,代表了国际航空运输的发展方向。 相似文献
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《综合运输》2016,(11)
新疆是"丝绸之路经济带"建设的核心区,建设乌鲁木齐国际枢纽将极大地促进新疆核心区区位优势的发挥,对于国家"一带一路"战略的全面实施意义重大。本文从地理区位、市场潜力、国际航线等方面分析了乌鲁木齐国际航空枢纽发展的基础与优势,由此进一步探讨国际航空战略面临的主要问题,提出从提高机场运行保障能力、提高区域机场体系协同发展、发展国际航空市场和中转业务、加大政府政策资金扶持、加强舆论宣传工作等方面推动和加快乌鲁木齐建设国际航空枢纽的建设工作,使其加强我国与中亚、西亚、南亚及欧洲国家的联系,促进"丝绸之路经济带"沿线国家互联互通,有利于全面提升国家在丝绸之路经济带资源整合能力和影响力。 相似文献
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随着《交通强国建设纲要》的印发,加快建设交通强国,完善综合运输大通道成为我国现阶段发展的重大部署,建设国际航空枢纽是提升我国综合交通网络的必然选择,也是提升我国民航业在国际民航组织(ICAO)、国际航空运输协会(IATA)、国际机场协会等民航组织机构中影响力和话语权的重要途径。国外一些大型国际航空枢纽已经发展得较为完善,而我国还缺少真正意义上的国际航空枢纽,因此通过总结成功的国际航空枢纽发展关键因素,帮助我国机场找准发展差距,以关键要素为出发点,寻找提升自身能力的突破口。 相似文献
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以综合交通运输行业发展中的建设投资、路网设施、旅客运输、货物运输方面统计数据指标为基础,通过分析总量指标在“十三五”时期的绝对值、增速,以及各交通运输方式结构指标变化情况,并与“十二五”时期相关指标变化进行对比分析,总结了“十三五”时期的综合交通建设投资、旅客运输和货物运输形势,表明“十三五”时期是综合交通运输从高速度增长向高质量发展的过渡阶段,具体表现为总量扩张趋缓、结构优化明显、升级动力减弱等三大特征,体现在交通投资和供给需求规模增速放缓,高快速交通方式的供需比重增加,交通生产投入的边际产出趋向递减等方面。 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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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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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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《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