首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   270篇
  免费   1篇
公路运输   2篇
综合类   73篇
水路运输   154篇
综合运输   42篇
  2022年   5篇
  2021年   4篇
  2020年   10篇
  2019年   4篇
  2018年   9篇
  2017年   9篇
  2016年   8篇
  2015年   18篇
  2014年   18篇
  2013年   26篇
  2012年   31篇
  2011年   18篇
  2010年   17篇
  2009年   22篇
  2008年   10篇
  2007年   23篇
  2006年   22篇
  2005年   6篇
  2004年   3篇
  2003年   2篇
  2002年   2篇
  2001年   2篇
  1999年   1篇
  1995年   1篇
排序方式: 共有271条查询结果,搜索用时 15 毫秒
71.
随着中国“一带一路”倡议的提出,海洋史研究成为历史学界的研究热点。九州大学人文科学府东洋史领域的中岛乐章先生多年来致力于明清东亚海域史的研究,成果丰硕。他认为日本学者在研究东亚海域史时,不应局限于日本和亚洲其他国家之间的关系史,而应该将日本视作亚洲的一部分,突破原来日本学界日本史、中国史、朝鲜史、东南亚史等学科的区域研究壁垒,强调对日本、中国、朝鲜、东南亚等国家和地区之间互相交流的历史予以关注。此外,他强调将东、西洋史料结合起来,从全球史的宏观视野研究东亚华人、日本人、琉球人等的海上贸易、交流活动。  相似文献   
72.
为了提高培训质量,对新公约下海上医疗救护培训现状及存在的问题进行分析.从统一教材、题库、实训项目及考评标准中内容、要求及运用情况进行实证对比.结果显示教材过于专业化和理论化;题库缺乏综合性、全面性和实用性;实训内容简单;评估形式复杂.指出教材应简单通俗而不失弹性;题库应强化案例及技能练习;实训内容应够用实用;考评应兼顾学员综合表现.  相似文献   
73.
As liquefied natural gas (LNG) steadily grows to be a common mode for commercializing natural gas, LNG supply chain optimization is becoming a key technology for gas companies to maintain competitiveness. This paper develops methods for improving the solutions for a previously stated form of an LNG inventory routing problem (LNG-IRP). Motivated by the poor performance of a Dantzig-Wolfe-based decomposition approach for exact solutions, we develop a suite of advanced heuristic techniques and propose a hybrid heuristic strategy aiming to achieve improved solutions in shorter computational time. The heuristics include two phases: the advanced construction phase is based on a rolling time algorithm and a greedy randomized adaptive search procedure (GRASP); and the solution improvement phase is a series of novel MIP-based neighborhood search techniques. The proposed algorithms are evaluated based on a set of realistic large-scale instances seen in recent literature. Extensive computational results indicate that the hybrid heuristic strategy is able to obtain optimal or near optimal feasible solutions substantially faster than commercial optimization software and also the previously proposed heuristic methods.  相似文献   
74.
航海类专业的学生不仅需要过硬的职业体能,更需要良好的心理及自我调节精神状态的能力。文中以广东交通职业技术学院海事学院航海专业职业体能课教学改革为例进行分析研究,进一步阐述职业体能课教学改革的重要性及课程改革的建议。  相似文献   
75.
文中研究了现行船舶安全检查机制,利用成本费、事故率、保险费等数据统计,以港口国监督为代表,对船舶安全检查效能展开讨论.  相似文献   
76.
焦宁 《中国海事》2011,(6):59-60
文中从海上巡查执法的工作需求出发,分析了我国海上巡查执法工作的现状及存在的问题,并从五个方面提出了我国海上巡查执法工作的发展思路。  相似文献   
77.
Roll-on/Roll-off ships are used for international transport of vehicles and other rolling equipment. We consider the problem where a ship sails between two geographical regions, picking up cargo in the first and making deliveries to the second. Several variations are considered with optional cargoes, flexible cargo quantities, and ship stability restrictions. Decisions must be made regarding the route and schedule of the ship as well as the stowage of cargo onboard. The problem is modeled as a mixed integer program, which has been solved using Xpress. In addition, a tailor made heuristic procedure is built using components from tabu search and squeaky wheel optimization. Extensive computational results are presented, showing that the heuristic is able to handle realistically sized problem instances.  相似文献   
78.
The shrinking of Arctic ice triggers off a new round of competition and dispute in this region, among traditional Arctic states and non-Arctic actors. Like its East Asia neighbours, China sees the melting Arctic Ocean a unique opportunity for itself and international trade generally. The changing physical landscape of the Arctic region will certainly have a major impact on China’s economic future which is very dependent on international shipping. This paper assesses the impact of the ice-free Arctic on the development of marine transport industry in China. The author discusses the potential new routes with the Arctic’s melting and the opportunities that it brings to China’s maritime transportation industry. Challenges that China faces in future shipping through the Arctic will be also addressed from political, legal, economic and environmental dimensions, followed by a preliminary exploration of ways to solution of these challenges.  相似文献   
79.
从开展海洋观课程创新与实践的针对性、紧迫性、目的性、阶段性等方面,论述了开设海洋观课程的基本认识.指出航海院校,应该让海洋观和海洋意识教育正式进入大学生的课堂,当好海洋观和海洋意识教育的标兵.  相似文献   
80.
Domestic management of historic shipwrecks and other Underwater Cultural Heritage (UCH) resources located in the United States coastal zone is extensively fragmented and a portion of it has significant implications in terms of international law. In the United States coastal zone, UCH (largely historic shipwrecks) falls under one of three general regimes, depending on where the resource is located and subject to specific and individual requirements: the General Maritime Law, the Abandoned Shipwreck Act, and the Marine Protection, Research and Sanctuaries Act, also known as the Marine Sanctuaries Act. After examining the development of and current status of these regimes, this article will suggest policies for a stronger, more coordinated federal management regime in United States coastal waters. It will specifically argue that a recent decision by the United States Court of Appeals for the Fourth Circuit provides a well-designed paradigm that could be linked with pertinent aspects of the three identified regimes to create a unified coastal governance mechanism for sunken historic shipwrecks.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号