舰船建造仿真技术综述及发展趋势

对虚拟仿真技术在国外舰船建造的应用进行了综述,研究了虚拟仿真技术在国内舰船设计、建造与维修等方面的应用及发展趋势,对舰船行业信息化与现代造船模式的结合,提高舰船设计、建造的技术与效率有一定启示。     

浅淡EDA技术在舰船动力监控产品开发中的应用

本文就ＥＤＡ技术在舰船动力监控产品开发中的应用的有关问题进行了探讨,提出了ＥＤＡ技术应用方面应重视的五个问题与建议 。     

舰船虚拟设计与制造仿真

信息技术对造船业的渗透,使造船的方法、手段、过程和理念发生巨大的变化。本文介绍了舰船数字化、虚拟设计技术、建造仿真、舰船设计、制造和管理环节间信息／知识共享与集成问题等。     

虚拟仿真技术在舰船研制评估中的应用研究

首先介绍了仿真技术、虚拟现实技术及虚拟仿真的概念;同时对虚拟仿真技术在国内外舰船研制中的发展作了阐述;最后用实例说明虚拟仿真技术在舰船研制评估当中的应用,并提出了以虚拟仿真为基础的舰船研制评估的系统结构.     

美军船全系统综合设计研制新概念

阐述了美海军推行舰船全系统综合设计研制途径的创新概念。目的是构建一种实现全舰系统工程的研制框架和策略。促进此项创新概念发展的主要因素是：让战斗部队参与设计过程、采用多系统框架进行综合、继续改进舰船采办过程。此项创新工作已由美国３个作战研究中心和海军总部各机构协同研究推行。美海军ＤＤ２１、ＳＣ２１、ＬＰＤ１７和ＣＶＸ各型新舰研制项目将首批实施这一创新研制途径。如情况进展顺利，美海军未来新舰设计建造新     

舰船动力系统虚拟训练技术研究

针对舰船动力系统训练的现状,对虚拟训练技术在舰船动力系统训练中的应用展开了深入研究.在分析舰船动力系统特点及其虚拟训练功能需求的基础上,重点研究了舰船动力系统虚拟训练功能实现的技术途径和关键技术,并以某动力装置虚拟训练功能的开发为实例对本文的研究内容进行了验证.通过本文的研究,不仅能促进舰船动力系统训练水平的提高,同时也能为舰船动力系统训练手段的现代化提供一定的参考.     

舰船水动力虚拟试验技术创新研究

在分析了舰船水动力设计创新能力对虚拟试验的技术需求和挑战的基础上,提出了"舰船水动力设计评估与综合优化虚拟水池集成平台".本平台以虚拟试验技术为核心,以计算机技术为依托,综合了物理试验技术能力与资源,并以数字化形式凝练起来,建成面向全行业、辐射其他装备制造业的、集物理与虚拟试验系统为一体的研究与应用平台,为舰船研究、设...     

虚拟技术在舰船动力装置训练中的应用研究

随着计算机软硬件技术的发展,虚拟技术在各个领域得到了广泛的应用。针对舰船动力装置的特点和传统训练方法的不足,文章研究将虚拟技术应用于舰船动力装置训练,包括舰船动力装置的结构原理培训、操作使用培训、装备维修训练等内容;同时,对舰船动力装置虚拟训练的技术实现方案及关键技术进行了深入分析,并以实例对训练功能的可实现性进行了验证。通过该方法的采用,不仅能够满足训练任务的需要,而且节约经费、缩短训练周期,具有非常重要的意义。     

法国“拉斐特“级护卫舰的设计创新

“拉斐特”级护卫舰是法国舰船制造局（ＤＣＮ）设计建造的系列舰船中的最新一型舰。讨论了“拉斐特”级护卫舰的设计准则，以及耿满足海军要求而开发的新技术。描述了该靓的主要特性，用图例阐述了在诸如陷身性、玻璃钢的使用、模块化建造技术等方面所开发的设计新概念”拉斐特“级护卫舰标志着法国在舰船设计进程中向前万过有重要意义的一步。     

DDG-51级舰计算机辅助设计

在美国海军的阿雷·伯克级（ＤＤＧ－５１）宙斯盾驱逐舰项目中，计算机辅助设计（ＣＡＤ）与计算机辅助制造（ＣＡＨ）技术正在得到实施。根据海军的批示，负责ＤＤＧ－５１级建造的船厂正在追求向基于ＣＡＤ的设计、制造与全寿期保障过渡。通过ＣＡＤ的创始性工作，采办费可以降低而无损于舰船的性能。通过计算机建立舰船的三维（３Ｄ）模型将有助于对在实船建造前用其它办法不能发现的干扰和接口问题的发现与解决。三维数据库中存     

An algorithm for oceanic front detection in chlorophyll and SST satellite imagery

An algorithm is described for oceanic front detection in chlorophyll (Chl) and sea surface temperature (SST) satellite imagery. The algorithm is based on a gradient approach: the main novelty is a shape-preserving, scale-sensitive, contextual median filter applied selectively and iteratively until convergence. This filter has been developed specifically for Chl since these fields have spatial patterns such as chlorophyll enhancement at thermohaline fronts and small- and meso-scale chlorophyll blooms that are not present in SST fields. Linear Chl enhancements and localized (point-wise) blooms are modeled as ridges and peaks respectively, whereas conventional fronts in Chl and SST fields are modeled as steps or ramps. Examples are presented of the algorithm performance using modeled (synthetic) images as well as synoptic Chl and SST imagery. After testing, the algorithm was used on > 6000 synoptic images, 1999–2007, to produce climatologies of Chl and SST fronts off the U.S. Northeast.     

A new efficient EDI system for container cargo logistics

There have been many efforts to develop a logistics information system in the Korean logistics industry. In spite of these efforts, there are many points which need improvement in the Logistics Information System, of which function is the electronic data communication without added value. This paper aims to describe some of the main problems and the successful factors which are being found in the evolution of the present EDI systems for clearing import/export container cargoes, with special reference to Singapore, Korea, and Japan. Following this, leaving legal issues aside, to suggest workable guidelines for designing a new efficient EDI system for container cargo logistics. As a result of the review, the following successful factors are drawn: (a) the planning, requirement analysis and design of EDI are critical, as it provides a framework for its implementation; (b) as the data of customs clearance are an integral part of a logistics EDI system, the inclusion of customs in the system design is essential; (c) the sharing system of cargo data as the framework of the logistics EDI is efficient for data interchange; (d) the EDI software for the user has been developed and provided by an EDI network operating company; and (e) to facilitate communication between trading partners and the transport sector, it is necessary to adopt a global message standard, such as EDIFACT.     

A new efficient EDI system for container cargo logistics

There have been many efforts to develop a logistics information system in the Korean logistics industry. In spite of these efforts, there are many points which need improvement in the Logistics Information System, of which function is the electronic data communication without added value. This paper aims to describe some of the main problems and the successful factors which are being found in the evolution of the present EDI systems for clearing import/export container cargoes, with special reference to Singapore, Korea, and Japan. Following this, leaving legal issues aside, to suggest workable guidelines for designing a new efficient EDI system for container cargo logistics. As a result of the review, the following successful factors are drawn: (a) the planning, requirement analysis and design of EDI are critical, as it provides a framework for its implementation; (b) as the data of customs clearance are an integral part of a logistics EDI system, the inclusion of customs in the system design is essential; (c) the sharing system of cargo data as the framework of the logistics EDI is efficient for data interchange; (d) the EDI software for the user has been developed and provided by an EDI network operating company; and (e) to facilitate communication between trading partners and the transport sector, it is necessary to adopt a global message standard, such as EDIFACT.     

基于程序定义及动态进程的PVM与MPI比较

MPI（Message Passing Interface）与PVM（Parallel Virtual Machine）均为分布式计算中广泛应用的两种并行计算环境。PVM出现的时间早于MPI,且它是一个自包含系统,而MPI是一个标准。目前,在PVM与MPI互相靠拢的过程中,关于两者的比较越来越多。其目的便是通过比较,结合二者之优点,发展起性能更加强大的并行计算环境。仅从程序的定义与实现、以及动态进程两个方面简单阐述了两者的不同,事实上,二者通常被用于解决不同的问题。     

Towards a simplified performance-linked value for money model as a reference point for bus contract payments

The burgeoning commitment to contracting the delivery of bus services through competitive tendering or negotiated performance-based contracts has been accompanied by as many contract payments schemes as there are contracts. We are now well placed to design a simplified performance-linked payment (SPLP) model that can be used as a reference point to ensure value for money, given the accumulation of experiences throughout the world which have revealed substantive common elements in contracts. Whether the payment to the operator is framed as a payment per passenger or as a payment per service kilometre, the SPLP identifies efficient subsidy outcomes that are linked to a proxy indicator of net social benefit per dollar of subsidy. We illustrate how the SPLP model can be applied to obtain the gross (subsidy) cost per passenger (or per passenger km) from measures of gross cost efficiency and network effectiveness. This model can then be used as part of a benchmarking activity to identify reference value of money prospects in respect of passengers per $ subsidy outlay by adjusting for influences not under the control of the service provider. A single framework to identify contract payments to operators, and to assess (i.e., benchmark) operator performance on critical KPIs, is provided by internalising critical key performance indicators (KPIs) in the design of the SPLP. The proposed SPLP model is sufficiently general to be independent of the procurement method (competitive tendered or negotiated, for example) and of the treatment of revenue allocation (net or gross based contracts), with the additional advantage of being able to assess value for money for government.     

内河交管雷达数据处理研究

我国船舶交通管制系统正在向内河发展。作为基本的监视设备。雷达及其数据处理系统面对着狭窄水道与拥挤交通的挑战。在内河条件下,雷达数据处理在其工作的3个主要方面会有困难:录取、跟踪与交通形势估计。现场试验清楚地表明了这一点。本文在测试结果的基础上分析了引起困难的诸因素。这些因素仅靠修改运动模型或自适应控制滤波器参数等方法是不易克服的。因此作者建议引入下述设计概念: 1.“双分辨率录取”。此设计可以在多个目标靠近时录取感兴趣的目标。 2.要充分利用雷达回波和环境条件信息,利用模式识别方法。这些信息可以减少航迹关联及交接的失误概率,从而改善跟踪性能。 3.在交通形势分析中利用专家的经验而不只是CPA,TCPA等参数,这可更好地预测交通形势的演进。应用上述概念设计的雷达数据处理可以在内河交管中起重要作用。     

Some unsettling maritime terms: the interpretation of found, cargo, ballast and voyage

This paper examines the meaning of four common maritime and admiralty terms: found, cargo, ballast and voyage . These terms are problematic because their definitions are elastic which makes application of the terms difficult. The four terms are important because significant legal consequences are attached to each of them, particularly for seamen on flags of convenience (FOC) and crews of convenience (COC) vessels in US ports. The findings of the author are based on personal experience as well as research conducted in preparation as an expert witness in several maritime cases in both the US District Courts and in Louisiana State Courts, personal interviews with seamen on FOC/COC vessels, interviews with legal and economic experts on the international maritime industry and officials of national and international labour organizations.     

深水钻井隔水管耦合系统分析(英文)

对于深水系泊钻井系统而言,移动式海洋钻井装置与细长结构(系缆、钻井隔水管)之间的耦合效应在预测浮体运动及钻井隔水管响应时起决定性作用.文中建立了深水系泊钻井系统的全耦合有限元模型,考虑波频与低频环境载荷,对系统进行了非线性时域分析.分析表明,由低频浮体运动激励的低频隔水管动态响应可对深水钻井隔水管设计产生重要影响.常规方法将低频浮体运动作为准静态效应考虑,对于连接在锚泊钻井装置上的深水钻井隔水管而言是不精确的.     

军械电磁辐射危害试验方法

舰船、飞机等平台中存在着电磁辐射对军械的危害问题,甚至会危及到人员的安全,需要对其进行正确试验评估.讨论了平台上电磁辐射对军械危害的试验方法,详细阐述了试验原理、测试系统、实施等关键内容.     

搜救船舶优选和排序的评判方法研究

根据现代决策理论和模糊数学评判方法,用3种多目标选优方法对搜救船舶选优进行探讨:(1)利用多属性决策加权和法进行评判;(2)根据汉明距离结合各指标的满意度曲线和重要度综合评判;(3)用模糊相似优先比方法评判。对各评判方法提出了若干改进措施,使方法更客观、合理。