大秦线运煤敞车车体情况调查及分析

针对我国铁路运煤敞车现状,以大秦线在用各种类型运煤敞车为试点,开展运煤敞车车体情况调查及分析,重点调查分析了铝合金、耐候钢和铁素体不锈钢材料车体的腐蚀、磨损情况,保护涂料现状,异种材料焊接部位的裂纹、腐蚀情况,材料的疲劳寿命和表面涂装问题,得出分析结论:目前使用的耐候钢材料其耐腐蚀性能不能满足车辆设计寿命的要求,铁素体不锈钢在耐腐蚀性能上明显优于耐候钢。建议对TCS不锈钢材料进行运用条件下的大气暴晒试验,C70B车体外表面油漆使用新的长效防护涂装体系,对有裂纹的车辆进行解剖、研究,以确定裂纹产生的原因、扩展方式和速度。     

Windows CE流接口驱动程序设计方法

开发嵌入式操作系统的设备驱动程序是应用嵌入式技术的重要基础。流接口驱动程序是Windows CE基本的驱动程序，是很多驱动程序的基础。分析Windows CE流接口驱动程序的基本结构，探讨流接口驱动程序的功能定义，认为流接口驱动程序应当能为应用程序提供查询输入和事件输入等两种输入方式，给出中断程序设计、I/O缓冲区设计的注意事项，总结一般的流接口驱动程序设计开发方法。     

关于天文航海教学的探讨

天文航海是航海专业课程中的难点，学生很难把握和学好，文章从教学的角度分析了如何展开天文航海教学提高教学效果，增强学生天文综合应用能力。     

应用于船舶电力推进系统的嵌入式仿真平台

介绍了ARM DSP嵌入式仿真平台的方案设计，包括对存储器的外部扩展、人机交互接口和外围电路的设计、实时操作系统μC／OS-Ⅱ的移植和完善、实时仿真应用程序的建立等。描述了仿真平台在船舶电力推进仿真系统中的应用，它为推进电机提供一个实时的动态负载特性——船机桨动态特性。     

麦哲伦海峡介绍及航法

麦哲伦海峡地处南美大陆南端,连接大西洋和太平洋,是南美大陆东西海岸间的重要海上通道。船舶航经麦哲伦海峡与绕行合恩角相比,不仅距离缩短近270n mile,而且合恩角全年风浪较大,冬季常有流冰存在,对于小型船舶和空载船舶航行比较困难,从经济性和安全性上考虑,航经麦哲伦海峡无疑是比较好的选择。     

VHDL电路优化设计及方法

随着集成电路技术和EDA技术的不断发展，VHDL已经成为IEEE标准化的硬件描述语言。分析VHDL语言设计的优点并对设计中的简化电路结构、优化电路设计等问题进行了研究，从设计思想、语句运用以及描述方法等多方面对电路进行优化设计。通过电路优化设计，可以使用规模更小的可编程逻辑芯片，从而降低系统成本。     

浅谈现代企事业单位的设备管理

设备管理在企事业单位中往往不被重视，制约了单位自身的发展，影响了经济效益。介绍了设备管理在企事业管理中的重要性、管理观念以及模式等，并对设备在管理、使用和维护过程中的一些有效方法进行了探讨，提出了改进措施，促使设备管理向更好的方向发展。     

模糊数据库技术在航海避碰决策支持系统中的应用

将航海避碰案例规范化 ,并根据案例中部分信息的不精确性 ,在数据库系统的数据表示和查询中引入模糊技术 ,从而形成了一个模糊关系型的避碰案例数据库系统 ,并将其嵌入到航海避碰决策支持系统当中 ,为安全航行提供了更丰富的决策信息。     

Reliable container line supply chains

Container line supply chains, based on a near-frictionless international transport belief, have contributed to economic prosperity and also rendered themselves uniquely vulnerable to various risks. 9/11 terrorists attacks, the lock-out of American West Ports and the global breakout of SARS disease have gradually shown that a) the safety and reliability in the chains are facing an unprecedented challenge and b) traditional engineeringbased risk assessment methods are inadequate to deal with the threats from variational environments, especially in the era of terrorism rampancy. The purpose of this paper is, therefore, to develop a conceptual risk assessment model for container line supply chains based on a modified Formal Safety Assessment (FSA) methodology that takes risks from vulnerability rather than only hazards into account. It gives particular emphasis on the analysis of the threats with a high level of uncertainty from both safety and economic viewpoints. The advantages of the vulnerability-based risk analysis approach to the hazard-based one are clarified and both engineering-based and managerial risk assessments are also discussed.     

Simulation studies of information propagation in a self-organizing distributed traffic information system

This paper investigates the feasibility of a self-organizing, completely distributed traffic information system based upon vehicle-to-vehicle communication technologies. Unlike centralized traffic information systems, the proposed system does not need public infrastructure investment as a prerequisite for implementation. Due to the complexity of the proposed system, simulation is selected as the primary approach in the feasibility studies. A simulation framework is built based on an existing microscopic traffic simulation model for the simulation studies. The critical questions for building the proposed market-driven system are examined both from communication requirements and traffic engineering points of view. Traffic information propagation both in freeway and arterial networks via information exchange among IVC-equipped vehicles is tested within the simulation framework. Results on the probability of successful IVC and traffic information propagation distance obtained from the simulation studies are generated and analyzed under incident-free and incident conditions for various roadway formats and parameter combinations. Comparisons between the speed of the incident information wave and the speed of the corresponding traffic shock wave due to the incident are analyzed for different scenarios as the most crucial aspect of the information propagation as a potential foundation for application in such a decentralized traffic information system.