船舶航行计划

介绍了制订船舶航行计划的现行法规,特别是IMO．A．893（21）号决议的主要内容,并汇总了中远集远公司三年多来推行船舶航行计划的经验和体会。     

Co-operation and competition in international container transport: strategies for ports

This paper focuses on the response of port authorities to the changing market environment in which they operate. It documents the changes taking place in the relationships between port authorities and terminal management companies and considers the strategic issues faced by these groups and other port interests. In particular, it investigates the potential conflicts of interest for a port authority in matters related to the level of competition amongst terminals within a port and the amount of competition amongst ports.     

Derivation of train arrival timings through correlations from individual passenger farecard data

Transportation - In this paper, we propose a method for estimating the timings at which trains arrive and depart from stations using passenger farecard data and knowledge of the network topology....     

船体纵骨疲劳裂纹扩展及寿命分析

基于有限元软件ABAQUS,结合虚拟裂纹闭合法、裂纹扩展判据及子结构技术,应用脚本语言Python开发了模拟疲劳裂纹扩展的程序(FCG-System)。对含初始裂纹的油船纵骨节点疲劳裂纹扩展进行数值模拟,并探讨侧向压力和轴向拉力这两种载荷对疲劳裂纹扩展路径和疲劳寿命的影响。结果表明,两种加载方式下裂纹扩展路径不同,且面板断裂前的疲劳寿命在总寿命中占据很大的成分。     

一种基于PLC的主机遥控系统设计

该型主机遥控系统是为海军配套开发研制的舰船主机遥控系统。系统主控制器采用德国西门子公司的可编程控制器。系统具有可靠性高、适用范围广、功能扩展容易及使用方便等特点。现以PA为控制对象论述该系统的构成及功能。     

基于内容的视频结构模型

提出了一种新的立体塔状模型。该模型较好地分析了整个视频流的时空及语义关系，能较灵活的应用于不同的检索要求。基于此模型，文中设计并实现了一个基于内容的视频数据库系统（Ｃｏｎｔｅｎｔ－Ｂａｓｅｄ Ｖｉｄｅｏ Ｄａｔａｂａｓｅ，ＣＢＶＤＢ），验证了新模型的可行性。     

E-bikes among older adults: benefits,disadvantages, usage and crash characteristics

Transportation - The promotion of sustainable and healthy mobility among older adults (≥?65 years) is an important challenge. E-bikes may be part of the solution, but research...