全文获取类型
收费全文 | 214篇 |
免费 | 13篇 |
专业分类
公路运输 | 63篇 |
综合类 | 71篇 |
水路运输 | 31篇 |
铁路运输 | 23篇 |
综合运输 | 39篇 |
出版年
2022年 | 2篇 |
2021年 | 15篇 |
2020年 | 15篇 |
2019年 | 3篇 |
2018年 | 6篇 |
2017年 | 5篇 |
2016年 | 7篇 |
2015年 | 13篇 |
2014年 | 18篇 |
2013年 | 16篇 |
2012年 | 28篇 |
2011年 | 18篇 |
2010年 | 19篇 |
2009年 | 7篇 |
2008年 | 13篇 |
2007年 | 12篇 |
2006年 | 10篇 |
2005年 | 5篇 |
2004年 | 4篇 |
2002年 | 1篇 |
2001年 | 2篇 |
2000年 | 2篇 |
1997年 | 1篇 |
1996年 | 2篇 |
1993年 | 1篇 |
1991年 | 1篇 |
1990年 | 1篇 |
排序方式: 共有227条查询结果,搜索用时 93 毫秒
61.
The workshop discusses and documents a number of countries’ experiences regarding risk and reward in the delivery of public transport and determines the way in which competitive pressures actually work (or not) to deliver efficient and effective services. Papers are grouped into three main themes, i.e., public versus private management; negotiated versus competitively tendered contracts; and measures to improve performance. This chapter begins with a brief overview of each of the eight papers. This is followed by a section that out the discussions that emanated from the papers. Finally, the main policy and research recommendations are presented. 相似文献
62.
Jackie Walters 《Research in Transportation Economics》2008,22(1):98-108
In South Africa, a restructuring of the public transport system is currently under way. In the bus industry the tender for contract system is being implemented, the commuter rail sector is being recapitalised and the minibus taxi industry recapitalization programme is in its early stages. Progress with policy implementation across the modes of transport, modal split trends and issues that hamper the full development of the public transport industry are discussed in this paper. Medium to long term policy and strategy initiatives that will further inform the development of the industry are also highlighted in this chapter. 相似文献
63.
闫艳 《辽宁省交通高等专科学校学报》2015,(1):60-63
我国社会主义现代化建设迫切需要人才资源、科学技术、投资环境等多方面的支持,而高职院校作为服务地方区域经济发展的主力军应承担起社会振兴的历史使命。剖析高职院校服务地方区域经济发展的必要性,深究高职院校在服务地方区域经济发展过程中存在的问题,从明确高职院校办学定位、提升科研能力、加强政策力度、建立配套机制等几方面提出我国社会主义现代化建设过程中高职院校服务地方区域经济发展的破解路径。 相似文献
64.
This research investigates the underwriting attitude of international commercial banks in lending shipping loans. By adopting the analytic hierarchical process methodology, the underwriting attitude is captured to understand how bankers would deal with shipping loans in response to the current lengthy recession. We find that bankers focus on the criteria of corporate recourse (CR) in their decision-makings. Of the CR factors, the financial strength of shipowner is the most important factor, followed by the shipowner’s business history and the bank–firm relationship. With the current underwriting attitude, the shipping sector may have limited access to shipping loans of international commercial banks due to low corporate ratings caused by the long recession and the nature of industry itself: volatility, fragmentation, capital intensity, high leverage, etc. 相似文献
65.
"快速通道+灵活线路"模式是城市快速公交应用中一种探索与创新的系统模式。以广州市BRT试验线为例介绍"快速通道+灵活线路"模式及其三个关键要素:快速专用通道、灵活线路运营、高效车站服务。探讨该模式在节省公交出行时间以及适应公共交通需求两方面的优势。分析"快速通道+灵活线路"模式的特性,并与传统的固定线路模式进行对比,归纳其三个关键要素与BRT系统效能的关系。最后,讨论了"快速通道+灵活线路"模式的适用条件,并指出快速公交的发展应走公交集约化和系统资源利用最大化的道路,提供快速、高效、便捷的高品质公共汽车交通服务。 相似文献
66.
67.
68.
69.
Jan Loof Igo Besselink Henk Nijmeijer 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2019,57(1):86-107
This paper describes the coupling between a three degrees of freedom steering-system model and a multi-body truck model. The steering-system model includes the king-pin geometry to provide the correct feedback torque from the road to the steering-system. The steering-system model is combined with a validated tractor semi-trailer model. An instrumented tractor semi-trailer has been tested on a proving ground and the steering-wheel torque, pitman-arm angle, king-pin angles and drag-link force have been measured during steady-state cornering, a step steer input and a sinusoidal steering input. It is shown that the steering-system model is able to accurately predict the steering-wheel torque for all tests and the vehicle model is accurate for vehicle motions up to a frequency where the lateral acceleration gain is minimum. Even though the vehicle response is not accurate above this frequency, the steering-wheel torque is still represented accurately. 相似文献
70.
吴风博 《辽宁省交通高等专科学校学报》2013,15(2):53-56
近年来,随着进出口业务的增长迅速,各家银行对国际结算业务的认识越来越重视。但是,商业银行的国际结算业务在带动经济发展的同时,也面临着创新能力有限的问题。本文着眼于中国商业银行国际业务的实际,剖析了现阶段中国主要商业银行在国际结算业务方面所反映出的问题,并给予了适当的调整策略。 相似文献