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81.
关于铁路隧道内安全的新UIC规程适用于新建和既有隧道。该规程制定了可靠的基础设施、车辆和运输调度措施来提高隧道内的安全性,尤其注意了隧道内的防火问题。 相似文献
82.
Peter.J.Fox 《汽车杂志》2010,(5):196-199
“如果2009年的开局并不是我们现在所看到的,我认为我们已经驾驶着RB5赢得了世界冠军,因为我们有F1里最的底盘”。克里斯蒂安·霍纳如是说。 相似文献
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从运营轨道线网客流中找寻规律,可以有效指导城市科学合理地预测轨道交通客流。本文根据目前苏州市AFC系统运营数据积累,从网络、线路、车站三个层面探讨苏州市轨道交通客流特征,分析目前线网客流特征,为后续预测模型的参数选择提供参考和依据,并且针对轨道交通规划设计及运营提出相关工作建议。 相似文献
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The International Maritime Organisation is currently working on establishing regulations for international shipping regarding greenhouse gas emissions, and a cost-effectiveness approach has been suggested as one method for determining the necessary reductions in emissions from shipping. Previous studies have investigated the CO2 emission reduction potential for the world shipping fleet up to 2030 and the associated marginal abatement cost levels. To analyse the cost implications of different emission reduction scenarios, this study has calculated the emission reduction potential and additional capital expenditure for 25 CO2 emission reduction measures applied to 59 ship segments. The expected fleet development over time, keeping track of new ships built from 2010 to 2030 and Existing ships built prior to 2010 and still in operation by 2030, have been modelled. Two alternative approaches to find the cost-effective potential in the world shipping fleet have been applied. One approach is to implement only measures which in themselves are cost-effective (measure-by-measure), and another approach is to implement measures as long as the net savings from cost-effective measures balance the costs of non-cost-effective measures (set of measures). The results demonstrate that by 2030, the majority (93%) of the reduction potential will be related to new ships. Our results show that the measure-by-measure approach would decrease the CO2 emissions by 30% for new ships while the set-of-measures approach with 53% (of the 2030 baseline emissions of 1316?Mt). The implication of achieving such emission reduction is an increase in the capital expenditure on New ships by 6% (USD 183 billion) and 27% (USD 761 billion), respectively, in the period 2010 to 2030 compared to a business-as-usual scenario. The measure-by-measure approach yields a 5% decrease in CO2 emission per 1% increase in capital expenditure, while the set-of-measures approach yields a 2% decrease per 1% increase. This is due to the significant variation in capital intensity of the different measures, ranging from almost zero to USD 200 per tonne of CO2 averted. The results of this study are useful for the shipping industry to assess the economic burden that must be shouldered in order to implement abatement measures under different CO2 emission reduction scenarios. 相似文献
88.
The efficient integration of logistics modes is critical for international cargo shipping. The local transportation connecting to the export port then plays a vital role in such integration. This paper investigates the problems of carrier selection in the China Pearl River delta area, with respect to international shipping. The analytical hierarchy process (AHP) model is constructed based on a comprehensive industrial interviews and statistical analysis. Rather than simply ranking the given alternatives, we use AHP is used to analyse the weakness and strength of impacting factors in carrier selection. The model is implemented under different types of shipper. Seven criteria are statistically summarized from the questionnaire for evaluating eight different modes. The results are useful to those liner companies serving the PRD region in relationship to port selection and fleet deployment. 相似文献
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Theo E. Notteboom Athanasios A. Pallis Peter W. De Langen Aimilia Papachristou 《Maritime Policy and Management》2013,40(7):636-653
Port economics, management and policy have progressively emerged as a distinctive research field, and a core part of maritime economics. This paper provides an analysis of all the 267 port studies published in Maritime Policy & Management (MPM) since its inception in 1973. This paper provides a content analysis for seven interrelated research theme categories including main research topics and methods, authorship distribution and citation counts. It is demonstrated that MPM played, and continues to play, a key role in publishing research on seaports. The published research increasingly applies established analytical frameworks to ports. The paper concludes with a discussion on current challenges for port-related research. 相似文献
90.
The paper explores the role of stakeholder collaboration in the adoption of innovations as part of the environmental and sustainability agenda of port gateways. We do this through a comparative assessment of the port of Vancouver, British Columbia, and the twin ports of Los Angeles and Long Beach, California. An inductive research approach is used to identify and assess the initiation and implementation process behind exemplary innovations. Innovation includes new technologies and processes for handling and moving cargo, mechanisms for planning and policy making, as well as financing, implementing, upgrading, managing and operating infrastructure systems. A relatively new arena for competition on the basis of innovation concerns environmental performance. The conceptual framework and empirical evidence suggest that while there may be intense demand for and supply of innovation in port gateways, the complex dynamics of the logistics chain are such that successful innovation requires conscious involvement and collaboration of stakeholders. 相似文献