全文获取类型
收费全文 | 555篇 |
免费 | 21篇 |
专业分类
公路运输 | 132篇 |
综合类 | 166篇 |
水路运输 | 170篇 |
铁路运输 | 87篇 |
综合运输 | 21篇 |
出版年
2024年 | 2篇 |
2022年 | 17篇 |
2021年 | 20篇 |
2020年 | 14篇 |
2019年 | 9篇 |
2018年 | 8篇 |
2017年 | 18篇 |
2016年 | 18篇 |
2015年 | 21篇 |
2014年 | 27篇 |
2013年 | 45篇 |
2012年 | 27篇 |
2011年 | 48篇 |
2010年 | 36篇 |
2009年 | 42篇 |
2008年 | 38篇 |
2007年 | 49篇 |
2006年 | 39篇 |
2005年 | 29篇 |
2004年 | 13篇 |
2003年 | 16篇 |
2002年 | 9篇 |
2001年 | 13篇 |
2000年 | 7篇 |
1999年 | 5篇 |
1997年 | 2篇 |
1994年 | 2篇 |
1993年 | 2篇 |
排序方式: 共有576条查询结果,搜索用时 296 毫秒
91.
92.
93.
通过运用数理理论之AR模型,开展填方路基沉降的检评工作,完成了工后质量评定任务,并预测其未来的沉降程度及趋势.研究表明:应用数理理论方法得出的结论,不仅具有实用价值和增强了可靠性,而且兼有鲜明的主动、事前的特征. 相似文献
94.
土建工程变形分析与预测,有赖于数理统计理论方法的支持。应用自回归理论和分段回归两种理论方法,实施隧拱沉降监控,结果表明:自回归理论宜于进行工程安全质量预测预报时使用,而分段回归方法能够准确、即时诠释监测对象的变形规律的变化,同样具备实用意义。 相似文献
95.
ABSTRACTDemand for sea space brought about by increasing container-shipping traffic has important implications on how this space is managed and used. This is particularly important given the long-term nature, high-asset specificity, high- opportunity cost of investment, and significant economic impact of container port activity on a locality. The challenge is especially pressing for ports, which are facing constraints in seaside capacity where container traffic also has to co-exist with the needs of other types of ship traffic. This challenge is likely be multiplied for next generation container ports, which are expected to handle even larger traffic volumes. These ports are also likely to face competing sea space demands from other economic and social activities especially when they are concurrently major confluences of trade, logistics, and urban populations. This is the first research to investigate in detail the impact and importance of investigating sea space requirements from the perspective of cargo traffic composition and ship capacity. Results show that transshipment containers can generate much higher demand for sea space due to the higher volume of shipping capacity that accompanies such traffic. Sustainability issues and managerial and policy implications pertaining to the development of next generation container ports are provided. 相似文献
96.
Hui Shan Loh 《Maritime Policy and Management》2013,40(4):436-455
ABSTRACTIn the contemporary port business environment, port resilience is of paramount importance for supply chain continuity. A result of the increased integration of ports into supply chains is ports’ potential to supply chain disruptions. This paper introduces a PSCD management model that incorporates the application of risk management, business continuity management, and quality management theories with the purpose of increasing port resilience such that supply chain continuity is enhanced. To validate this model, primary data were collected from samples of port operators and port authorities and analyzed using structural equation modeling with AMOS 22.0. The results indicate that managing PSCD using the management model contributes positively to the identification of internal and external opportunities and through that to port’s resilience of internal operations. This, in turn, positively influences port’s financial health and market reputation. The management model has several managerial and academic implications as it offers meaningful insights on policy development as well as theory building. 相似文献
97.
98.
99.
单海燕 《辽宁省交通高等专科学校学报》2009,11(1):5-7
植筋技术用于桥梁拼接施工时,具有对原结构的破损小、工艺简单、锚固后结构整体性好等特点。本文结合合宁扩建高速公路扩建工程新、老桥梁的拼接,较详细地介绍植筋技术的施工工艺及施工中的注意事项。 相似文献
100.
该文对排水费是污水处理费还是排水设施使用费、排水费价格体系是全成本还是运行费、排水费是经营性收费还是行政事业性收费等问题进行了分析探索。 相似文献