船体生产设计异构数据协同与统一数据源

异构数据协同与统一数据源是保证数据流准确的重要前提。针对中国船舶行业设计制造的特点,讨论当前船体生产设计数据协同与统一数据源过程中存在的典型问题。基于Tribon M3软件中数据协同与管理的具体问题,提出解决方案。     

一种新的数据库访问技术——OLE DB接口技术

由于数据结构的差异,关系型数据库和非关系型数据库很难在同一平台上实现统一的编程接口.为此,本文通过介绍基于COM的OLEDB接口技术,以及与ODBC等其它数据库接口技术的对比,阐明了OLEDB的技术优势,并在VC平台上实现了异构数据源访问接口.     

一种新的数据库访问技术—OLE DB接口技术

由于数据结构的差异，关系型数据库和非关系型数据库很难在同一平台上实现统一的编程接口。为此，本文通过介绍基于COM的OLE DB接口技术，以及与ODBC等其它数据库接口技术的对比。阐明了OLE DB的技术优势，并在VC平台上实现了异构数据源访问接口。     

异构数据源融合的船舶物流信息管理系统设计

常规的物流信息管理系统不具有处理船舶异构数据的能力,将其应用到船舶物流信息的管理工作中会存在管理效果不佳的问题,为此应用异构数据源融合技术从硬件、数据库和软件3个方面,实现对船舶物流信息管理系统的优化设计。在硬件方面优化核心数据处理和物流定位单元,并改变相关电路的连接方式。按照船舶物流信息之间的逻辑关系,建立数据库表并存储货物、船舶等数据信息。在硬件设备和数据库的支持下,以采集的实时数据为基础融合异构数据源,并实现物流订单、船舶基本信息以及物流状态信息等管理功能。通过与传统管理系统的对比发现,设计的物流信息管理系统的功能运行成功率提升了1.6%。     

面向船舶制造的统一数据库集成平台应用研究

本文研究了国内大中型船舶制造企业异构数据库的集成现状,并根据船舶制造企业异构数据库的集成需求及企业"信息孤岛"现象,设计了面向船舶制造的统一数据库集成平台。为提高异构数据库的集成效率,采用基于元数据的模式集成技术解决了数据集成中的结构差异与语义差异的问题。通过集成国内某大型船舶制造企业管件加工车间的ERP,PDM,MES,DNC,QMS,WMS,BCS等系统的数据库,实现了各异构业务数据库的快速联通,验证了该平台数据集成的有效性和先进性,为其他船舶制造企业异构数据的集成提供有效解决方案。     

电子战仿真异构数据库数据集成应用研究

在分析异构数据源集成的基本模式的基础上,提出基于数据仓库技术实现电子战仿真异构数据库数据集成的解决方案,规划系统数据集成应用模式,设计电子战仿真试验数据仓库模型、数据抽取和转换的流程图,并分析数据转换规则。     

异构数据库数据迁移工具的设计与实现

异构数据库数据迁移是新型信息系统研制的重点之一。数据迁移就是将数据从一种数据环境移入另一种数据环境，它不仅仅是简单数据转移，还涉及到数据格式转换。在分析数据迁移常用方法基础上，提出一种更有效实现方法，具体实现一个通用异构数据库数据迁移系统。     

软件无线电技术与第三代移动通信

通过对软件无线电技术及结构的分析，阐述了第三代移动通信发展中引入软件无线电技术，充分利用软件无线电为通信系统提供一种新型的结构，用统一的硬件平台，不同的软件来实现不同的功能以实现软件无线电技术带来的系统灵活性和通用性，说明了软件无线电技术能解决多频多模式多业务终端问题，实现第三代移动通信中多种空中接口的并存，以及第三代与GSM系统的兼容。     

基于XML中间件的数据存储交换技术研究

在分析数据集成的概念并介绍XML数据源的简单、开放、高效的特点后;利用微软ADO.NET的XML相关类的方法和属性,并通过些实例来详述以XML中间件对异构数据源的进行存取的过程,从而在单独访问、修改或侧除异构数据数据集的技术上,提供新的研究思路。     

航天测控系统多数据源融合评估方法

航天测控系统测控效能评估中的数据源主要来自评估指标体系中定性指标和定量指标的评估数据,为提高评估结果的可信性,需要减少这些数据间的冲突性和不一致性.首先,对评估指标体系进行约简优化,并提出一种基于多源异构数据融合的评估方法,以专家群决策作为评估基本框架,通过信念图实现异构数据的有效映射和统一表达,然后采用扩展贝叶斯进行评估数据融合,最后结合系统执行某次测控任务为例得到效能评估值.实例表明:该融合方法具有一定的实用性和有效性,能有效提高评估结果的可靠性和可信性.     

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

正~~     

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;     

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.     

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。     

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.