航天发射场电磁兼容试验方法探讨

简要论述了航天发射场电磁兼容试验的必要性和复杂性,提出了发射场电磁兼容试验的方法.通过预测分析可以减少不必要的参试设备数量,在观察参试系统设备工作的同时加入电磁频谱监测,在保证试验结论准确性时可加快干扰查找及排除.     

系统电磁兼容层次化预测方法研究

介绍了电磁兼容预测的概念和特点,从系统级角度分析电磁干扰问题,分4个层次来论述电磁兼容预测分析的总技术路线,并提出了系统电磁兼容预测的层次化方法.此外,还运用层次化预测方法,结合实际工程,给出了电磁兼容预测的一般分析步骤.该方法和分析步骤可为电磁兼容的理论分析和工程实践提供参考.     

舰艇电磁兼容顶层设计思想和方法

分析舰载电磁收发设备之间存在的电磁干扰问题,这些问题难于用传统的规范法和问题解决法解决,提出舰艇电磁兼容顶层设计思想,并介绍了电磁干扰预测、总体电磁兼容优化设计和全舰电磁兼容管理设计等舰艇电磁兼容设计方法。     

战场电磁兼容辅助决策模型构建*

针对当前战场电磁兼容难题,提出了基于动态频谱池管理的战场电磁兼容辅助决策模型,论述了战场电磁兼容辅助决策模型中关键的频谱感知、预测分析、频谱池分配与管理和辅助决策等模型,具有一定的工程应用价值。     

舰船电磁兼容设计发展综述

舰船电磁兼容设计是一项系统化工程。新技术、新装备的发展对现代舰船EMC设计提出了更高的要求。在这一背景下,加快提升舰船电磁兼容仿真预测的设计方法和手段,并在完善电磁兼容考核评估方法的同时,大力发展专用的电磁兼容控制装备,才能主动应对新形势下舰船装备发展新趋势所提出的电磁兼容需求。     

电磁兼容性船模预测在电波暗室内的实现

根据电磁缩尺模型理论,介绍电磁兼容性船模预测的理论和条件;推导了天线端感应电压、天线耦合度与缩尺比之间的关系;采用电波暗室作为船模预测的试验场地,进行天线方向图、天线耦合度（或隔离度）、近区场强等参数测试.由理论计算和大量试验分析得出：此方法用来确定舰船通信天线优化布置,了解电磁环境分布是正确可行的.采用虚拟仪器软件平台开发的船模自动测试系统,可实现在电波暗室内开展船模电磁兼容预测.     

潜艇的电磁兼容管理与控制

潜艇中电磁场环境对潜艇中的电子设备系统、武器和潜艇中的工作人员的安全至关重要。对潜艇中电磁场环境参数的准确测量对于潜艇的电磁兼容整体设计十分重要。随着计算科学技术的迅速发展,借助现代计算机对潜艇中的电磁兼容问题进行预测计算已成为重要手段。因此,尽量收集潜艇中的电磁数据,分析收集到的电磁数据,才能对潜艇的总体电磁兼容有着整体上的把握。本文研究了潜艇的电磁兼容管理控制技术对于我国在潜艇电磁兼容控制管理方面有着重要的指导意义。     

船用网络型复合操纵器电磁辐射兼容措施合理性探讨

为保证电磁兼容试验在设计后期起到有效的验证作用,从分析电磁兼容试验的特点入手,结合某型设备在后期试验中得出的结论,分析前期设计的不足,提出弥补措施,使其达到相应的要求。     

某装置电磁兼容测试的分析改进

介绍了某装置在试验中出现的电磁干扰问题,进行电磁兼容分析并改进设计,采取接地等方法提高了敏感电路的抗干扰能力。经试验验证,改进合理有效。相应的电磁兼容措施方法对其他电子设备也有参考意义。     

潜艇专项试验的电磁兼容管理与控制

潜艇专项试验对于武器装备的正式装备至关重要,试验过程中临时设备的上艇势必对原有电磁兼容性能构成影响,为有效降低试验过程中出现试验设备和装艇设备之间发生电磁干扰的概率,本文结合潜艇某专项试验的电磁兼容工程实践经验,以总体电磁兼容设计及试验过程监控为重点,总结提出了潜艇专项试验中电磁兼容管理与控制的方法和要点。     

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.