含海水液压系统设计与应用

本文结合长期工作于海洋环境中的液压系统所面临的现实问题及我单位在含海水液压系统上的研究成果，分析了含海水液压系统需要解决的关键技术，并对系统进行了设计，具有一定的推广应用价值。     

基于UML和HLA仿真系统的可重用性研究

为了提高空防仿真系统的可重用性和互操作性，采用UML和HLA相结合的方法对空防仿真系统进行了分析，并使用该方法着重对系统的可重用性进行了研究，该方法对于建立可重用性好，互操作性强的仿真系统具有一定的参考价值。     

隔振器参数对船舶动力机械系统隔振性能的影响分析

以半主动控制技术为参考背景,借助Ansys计算分析工具建立机械隔振系统有限元模型,分别计算分析了隔振器刚度和阻尼参数的改变对系统隔振性能的影响。结果表明,研究内容具有一定的参考价值,并可在数据分析的基础上进行半主动控制技术仿真研究。     

S7-300PLC和现场总线在机舱通风监控系统中的应用

本文介绍了基于Profibus-DP现场总线和西门子S7-300PLC的机舱通风监控系统,文中论述了如何运用Profibus-DP和S7-300进行系统的构架和实现,运用Wincc进行上位监控系统的开发,并且对系统的软硬件设计和系统程序进行了分析说明,具有一定的应用价值。     

单相交流逆变系统直流侧电容电压脉动分析

对于单相交流逆变系统,其直流侧电容电压存在固有的2倍于逆变器输出频率的脉动,本文基于基本电路原理对系统暂态过程中电气量的变化规律进行了分析,总结了系统直流侧电容电压脉动的机理,并建立了仿真模型,对系统直流侧电压脉动的相关典型工况进行了分析。     

结合Petri网理论的网格时间表现检测与分析

在GIG系统的背景下，分析了Petri网理论与基于OGSA的网格的结合，并提出了使用Petri网对系统进行建模的方法，对系统的时间表现加以检测和分析。     

基于BizTalk Server的服务集成性能分析

从面向服务的体系结构出发,总结并提出了面向服务的系统性能测试的指标体系,对影响系统性能的主要因素进行了分析.通过搭建基于BizTalk Server的测试环境,对系统性能指标进行测试,并对测试的结果进行了分析.     

清江隔河岩第二级升船机主拖动系统设计与分析

介绍了清江隔河岩第二级升船机主拖动系统的组成结构，并对系统控制策略进行了分析比较，最后简单介绍了系统功能。     

船用升降装置与保护罩发生碰撞的原因分析及解决方案

分析船用升降装置和保护罩发生碰撞的现象,通过系统原理可知缺乏液压互锁机构和系统的内泄漏是导致两者的执行装置发生运动干涉的主要原因.在对系统加装液控单向阀和行程阀,并对系统布置进行相应改进后,有效解决了碰撞现象的发生.     

模糊PID控制器在温度控制系统中的应用

本文首先对温度控制系统中的模糊程序进行了设计,接着对系统的参数进行了自教正,对系统工作流程进行了分析;最后通过仿真,得出模糊PID控制有良好的效果,系统的抗干扰能力很强。     

33rd International Conference on Ocean,Offshore and Arctic Engineering （OMAE2014）

正San Francisco,California,June 8-13,2014.OMAE 2014 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to:·meet and present advances in technology and its scientific support;·to exchange ideas and experiences whilst promoting technological progress and its application in industry·to promote international cooperation in ocean,offshore and arctic engineering.In line with the tradition of excellence of previous OMAE conferences,more than 900 technical papers are planned for presentation.Outreach for Engineers Specialty Forum This Specialty Forum is designed for students and professionals who may not be familiar with the Ocean and Offshore industry,as well as those who have just recently specialized in this field.     

Errata

正In the paper"Influence of Fouling Assemblage on the Corrosion Behaviour of Mild Steel in the Coastal Waters of The Gulf of Mannar,India"in Vol.12,No.4,Page:509,References were lost,and the two authors’biographies were identical.The correct text is shown below.We apologize to the authors and our readers for any inconvenience caused by the errors.     

Journal of Marine Science and Application 2014 Sum. Contents

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第34届海洋、离岸及极地工程国际会议(英文)

正St.John's,Newfoundland,Canada,May 31-June 5,2015 OMAE2015 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to: meet and present advances in technology and its scientific support;     

联合作战计划和执行系统

全球指挥控制系统(GCCS)实施当前美国海军网络中心战信息基础设施的联合计划网络。联合作战计划和执行系统(JOPES)支持GCCS实现联合计划。JOPES有两类计划：时间不限的精密预案计划生成作战计划、方案计划或职能计划；时间敏感的危机行动计划生成作战命令或战役方案。前者在和平时期创建的作战计划是后者的计划基础，加速应付危机的能力。     

Recent progress on wave induced loading measurements in warships

Recent measurements of wave induced hull strain and flexure in RN warships are presented together with the derivation of the current design criteria for extreme hull girder bending loads. The history of the development of the shipboard instrumentation used is given and recent developments to improve the quality and ease of analysis of the data are described. An unexpectedly high transverse asymmetry in the longitudinal strains measured in destroyers is shown to be the result of a combination of vertical and lateral bending in oblique seas. Finally recent theoretical comparisons between the loading of Deep-Vee hulls and conventional UK rounded bilge hulls are presented which demonstrate the higher loading experienced by this type of hull form.     

The 11th International Conference on Hydrodynamics (ICHD 2014)

正19–24 October 2014 SingaporeCONFERENCE THEMES The overall aim of the ICHD Conference is to provide a forum for participants from around the world to review,discuss and present the latest developments in the broad discipline of hydrodynamics and fluid mechanics.The first International Conference on Hydrodynamics(ICHD)was initiated in 1994 in Wuxi,China.Since then,9 more ICHD conferences were held subsequently in Hong Kong,Seoul,Yokohama,Tainan,Perth,Ischia,Nantes,Shanghai and St Petersburg.Evidently the ICHD conference has become an important event among academics,researchers,engineers and operators,working in the fields closely related to the science and technology of hydrodynamics.The 11th ICHD will be held in Singapore in 2014.     

第十二届深水操作会议和展览会(英文)

正November 4-6,2014Moody Gardens HotelConvention Center/Galveston,TX The Deepwater Operations Conference and Exhibition is celebrating its 12th anniversary this year.This growing event will continue the tradition of excellence in addressing operational challenges involved in developing deepwater resources.We will return to the Moody Gardens Hotel and Convention Center on November 5-7,2014 in Galveston,Texas.     

Eastbound or westbound ?

In terms of equal sailing distances, where is the inflexion when ships depart from ports in the Asian Continent to New York via Suez and/or Panama？
The answer is China South Port Group （Hong Kong, Shenzhen and Guangzhou）.     

Impact of regulation on the performances of long-distance transport services: A comparison of the different approaches in Sweden and Norway

Despite the many socio-economic similarities between Sweden and Norway, differences in jurisdiction, organisation, cooperation, and financing of long-distance passenger train and coach services have led to the development of four distinctively different ways of serving the markets. This paper describes how the train and coach markets have developed in the two countries, with emphasis on regulatory and industrial structure and a couple of performance variables.Looking at passenger rail, both countries separated infrastructure from operation over a decade ago. However, while Norwegian rail is characterised by an almost monopoly supplier, rail services in Sweden are partly decentralised to the responsibility of county authorities and are widely subjected to competitive tendering. The rest of the network is about to be opened up for on-the-track competition. Swedish Rail (SJ) has spent the last decades consolidating its core business (passenger rail) and sold out its other businesses. In contrast, the Norwegian state rail (NSB) has expanded its business to become a major bus operator and property owner, with extensions also into the Swedish market.The coach industry was more recently deregulated in both countries. The Swedish coach market is dominated by privately owned companies operating services to and from Stockholm. In Norway, state-owned NSB is a major coach operator on medium distance routes, and is also the largest partner of Nor-Way Bussekspress which totally dominates long-distance coach services. Further, the Norwegian coach market is characterised by cross-ownership and cooperation which has enabled an extensive route network which covers most of Norway.We find distinct differences in achievements in the two modes and in the two countries. Swedish rail services have succeeded in winning market shares and in renewing and developing both infrastructure and service levels to a greater extent than the Norwegian model. On the other hand, the Norwegian coach market seems to be more developed and efficient compared to its Swedish counterpart.The paper concludes with a discussion on the possible links between the different approaches and the performance observed, with the aim to stimulate further and more detailed research on some important issues.