虚拟理论在船舶工业中的应用——虚拟船厂

针对21世纪世界市场环境的变化和顾客需求的多样性,分析了虚拟企业的理论基础,并将虚拟企业理论应用到船舶工业中,提出了虚拟船厂的概念,研究了其使成技术,并构建了虚拟船厂的框架体系。     

物联网技术在船厂安全生产中的应用

通过在全国各大船厂调研安全生产情况,收集安全生产中存在的问题,梳理出船厂安全生产对物联网技术的需求。从安全生产影响因素人、物、环境角度,按物联网三层架构分别分析了能满足需求的物联网技术。提出了物联网技术在船厂安全生产中的3种应用场景,对每种场景所使用的物联网技术和解决的问题做了简要说明。文章最后对物联网技术在实际应用中存在的问题作了简要分析并给出了解决问题的建议。     

虚拟船厂的组建和管理研究

介绍了在敏捷制造环境下,虚拟企业为完成船舶设计、制造、管理而生成虚拟船厂,通过对虚拟船厂的功能分解,初步分析并研究了虚拟船厂的构建和管理,并提出了用多目标决策方法进行合作伙伴的选择,还对我国开展敏捷造船提出了建议。     

考虑任务排序策略的舰船建造车间虚拟制造单元动态调度

为提高舰船制造系统作业调度的柔性和效率,从车间层的作业计划角度出发,研究周期驱动条件下的虚拟制造单元多阶段动态调度问题并构建了动态调度数学模型。模型中考虑了加工任务动态需求、设备加工能力、负荷平衡、同类设备有多台的情况且提出共享资源协调排序策略,以实现最大完工时间和总物料运输距离之和最小化的目标。运用改进蚁群算法与启发式规则的混合算法进行求解。通过某船厂的实际生产数据验证了虚拟单元动态调度方法的可行性和有效性。     

中小型船舶企业焊接技术现状与展望

焊接是造船过程中的重要一环,对船舶的整体质量和寿命有着重要的影响。从焊接材料、方法、设备等角度综合论述了我国中小船厂焊接技术的发展现状,并分析了中小船厂焊接技术存在的问题及其与大型船厂焊接技术的差距,并对其发展趋势做出了预测。     

基于三层C/S结构的中小船厂管理信息系统的设计

本文分析了Microsoft Windows DNA体系结构,提出了采用三层C/S结构的中小船厂信息管理系统.该信息管理系统技术先进,便于使用和维护,能满足中小船厂发展的需要.     

船舶智能制造技术评价指标体系

研究智能船厂的系统架构和船舶智能制造技术评价要素,从基础层、车间层、企业层3个层级提出船舶智能制造技术评价指标体系,并确定各指标的权重系数,为造船企业开展自评价提供方法。     

基于虚拟现实技术的虚拟船厂构建方法和应用研究

利用虚拟现实技术,通过对船厂生产资源进行三维几何建模、纹理处理,建立了与实际船舶建造生产资源相对应的三维生产资源模型。再通过模型管理数据库对所建立的三维模型和纹理数据进行管理,在虚拟现实仿真平台中构建虚拟船厂,有效提升了船厂的管理水平。     

基于虚拟现实的虚拟船厂构建方法和应用研究

本文利用虚拟现实技术,通过对船厂生产资源进行三维几何建模、纹理处理,建立了与实际船舶建造生产资源相对应的三维生产资源模型;再通过模型管理数据库对所建立的三维模型和纹理数据进行管理,在虚拟现实仿真平台中构建虚拟船厂,有效提升了船厂的管理水平。     

上海外高桥造船有限公司一期建设与企业发展战略

详述了上海外高桥造船有限公司船厂的设计特点；结合供应链管理的理论，论证了该公司目前的主要任务应是实现现代化的造船模式；从发展战略角度提出了上海外高桥造船有限公司的中长期目标——成为世界级水平的船厂。     

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。     

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）.     

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.     

桥梁防撞设施物理模型试验

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。     

印尼某电厂码头水工建筑物设计

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。     

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.     

开放式数据挖掘系统模型

目前国内已经出现了少量的数据挖掘相关产品。国内数据挖掘软件无论从数量还是质量上比较，都与国外软件存在着较大的差距。随着数据仓库技术的普及，数据挖掘应用的需求越来越强烈，如何缩短这种差距，研发数据挖掘软件产品成为国内业界的一个重要问题。通过引用目前国际通用数据挖掘标准技术来构建开放式的数据挖掘系统模型，该系统模型从可扩展性、可重用性、易用性等方面得到了加强。