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海军信息系统面临的挑战是整合各个独立的信息系统,进行有效集成以满足联合作战的要求,同时发展安全、容易接入、用户友好、便于指控系统使用的基础架构。SOA(Service-Oriented Architectures,面向服务架构)在美军的网络中心战略中发挥着重要作用,通过对美军的NCES(Net-Centric Enterprise Services,网络中心企业服务网)和SoSCOE(Systems of Systems Common Operating Environment,系统之系统的公共操作环境)这两种典型的SOA应用系统的分析,梳理了使用SOA的方法构建军事信息系统需要解决的主要问题和技术路线。 相似文献
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面向服务的体系结构(SOA)和模型驱动架构(MDA)的迅速发展为指挥信息系统的构建提供了新的方法。为了综合利用SOA和MDA的优点,提出了将SOA和MDA相结合的指挥信息系统构建新方法。首先基于SOA定义了军事信息服务,然后设计了指挥信息系统的集成框架,接着给出了基于SOA的系统迭代式生命周期,最后阐述了模型驱动开发过程与服务组合的对应关系。通过对新构建方法的总结分析,表明所提的构建方法综合了SOA和MDA的优点,既提高了系统设计与开发的效率,又能促进异构系统的综合集成。 相似文献
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本文探讨了基于面向服务SOA架构的共享短信平台系统设计,通过使用统一规范的接口协议,将短信平台在不同应用中统一调用,实现集中共享,使用一个应用管理网站进行操作和控制,部署系统简便,只要网络通达,就可达到资源共享的目的。近些年开始流行面向服务(SOA)架构,这种新架构思想,对在分布式软件开发方面非常灵活,起到减少耦合的作用,并具有平台无关等特性,能很好解决系统服务的复用,也具有灵活性和便于互操作。本文从技术工作实践和实用的角度对面向服务架构(SOA)进行了探讨,为今后海事信息化在系统集成方面提供一些技术参考,最后对基于SOA架构的信息系统,在今后海事信息服务工作中的应用予以展望。 相似文献
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介绍长航集团老旧船舶管理信息系统(MIS系统)的开发过程,系统实现的功能,分析了系统的应用效果,提出了开发大中型企业建设MIS系统应注意的关键问题。 相似文献
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航运业海洋空间信息服务组件
利用先进的地理信息系统技术,将空间信息和业务信息结合在一起,在J2EE(Java 2 Enterprise Edition)的框架内实现海洋空间信息服务,能够为企业级信息系统建设提供完整的解决方案。利用该产品,可以迅速地构筑具有海洋空间信息处理能力的可视化的行业应用系统或企业信息系统。 相似文献
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舰船全寿命敏捷供应链信息共享研究 总被引:1,自引:1,他引:0
舰船全寿命敏捷供应链及其信息视图形成与产品全寿命协同设计及其动态联盟组建过程是密切相关的。数据网格(Data Grid)主要包括数字图书馆技术和数据网格服务技术,它能为敏捷供应链与其它信息系统集成和共享提供技术保障。根据舰船全寿命敏捷供应链信息共享需求,提出了一个多层次交叉的、以两个数据网格服务中心(船舶设计建造和运行维修两个数据网格服务中心)为基础的船舶全寿命动态联盟信息共享结构及基于数据挖掘算法的资源和信息发现流程。在通过数据网格服务获取某设备的维修数据后,应用改进的灰色聚类算法发现故障的规律,这对新产品的改进和开发是很重要的。一个已开发的原型系统实现了两个数据网格服务中心的信息共享并将灰色聚类算法应用于船用泵的故障规律的发现。 相似文献
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《船舶与海洋工程学报》2014,(2)
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. 相似文献
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《船舶与海洋工程学报》2014,(4)
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; 相似文献
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联合作战计划和执行系统 总被引:2,自引:1,他引:1
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。 相似文献
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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). 相似文献
The answer is China South Port Group (Hong Kong, Shenzhen and Guangzhou). 相似文献
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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. 相似文献
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桥梁防撞设施物理模型试验 总被引:1,自引:0,他引:1
物理模型试验是预报防撞设施所受撞击力及优化设计方案的主要方法之一。结合杭州湾大桥柔性防撞设施及东海大桥独立式防撞体设计方案,阐述了船—防撞体撞击试验的基本原理、方法、试验方案及相关试验结果。提出了柔性防撞系统的优化方案。试验结果表明,该方案经济有效,可供预报类似桥梁防撞设施撞击力时参考。 相似文献
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印尼某电厂项目码头水工建筑物包括码头、防波堤和护岸等主要组成部分。在该项目水工建筑物的设计过程中,综合考虑当地的自然条件、施工能力和材料来源等因素,不断优化结构选型和结构断面。根据不同使用要求,护岸分别采用直立式和斜坡式2种结构型式,推荐的设计方案节省投资、施工方便,可供同类工程设计参考。 相似文献
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Gunnar Alexandersson Staffan Hultén Frode Longva 《Research in Transportation Economics》2010,29(1):212-218
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. 相似文献