基于CBR方法的船舶避碰决策支持模型探析

介绍了CBR技术,并从船舶避碰案例库的建立、基于评估系统的避碰案例学习两个方面阐述了基于CBR方法的船舶避碰决策支持模型。     

紧迫危险下的船舶智能避碰决策研究

随着船舶的大型化、高速化以及通航水域船舶密度增加和会遇率的增大,船舶的碰撞事故时有发生,这就对避碰问题的研究提出了更高的要求.通过对紧迫危险及紧迫危险区域的深入研究,提出了紧迫危险距离的量化模型及紧迫危险下的避碰决策,并通过几何作图分析和模拟操纵仿真试验加以验证.     

船舶拥挤水域操船避碰与航行定位矛盾的解决

给了了一种实用的解决操船避碰与航行定位矛盾问题的方法，在有明显物标的水域，无需雷达定位可以确定航船的轨迹，从而，减轻了轻驶员的劳动强度，给船舶驾驶人员更充分的时间判断周围环境，避免紧迫危险，解决了操船避碰与航行定位问题的主要矛盾，在交通密度较大的水域实用应用效果显著。     

船舶碰撞案例库研究与应用

建立规范化和信息化表示的船舶碰撞案例库,以适应船舶避碰理论研究、避碰决策研究、避碰仿真研究、培养船舶驾驶人员以及海事审判等多方面的应用,具有重要理论和现实意义。本文基于多功能应用的船舶碰撞案例的规范化、信息化表示进行研究,设计实现了船舶碰撞案例库,并案例库的应用进行了研究。     

CBR及其在船舶维修领域中的应用

介绍了基于案例的推理(CBR)技术,针对船舶维修的特点.阐述了利用基于案例的推理技术建立船舶维修专家系统,并描述了该系统的总体结构、工作原理及案例库和推理机的结构组成.     

船舶拟人智能避碰决策方法研究综述

回顾我校研发团队20年来在船舶自动避碰技术的研究历程,简要介绍了船舶拟人智能避碰决策（PIDVCA）方法,重点论述了《机器决策》的“拟人智能”特性,并借助船舶智能操控（SIHC）仿真平台,通过设计典型会遇态势加以验证。研究结果表明：基于PIDVCA方法的《机器决策》可以同时安全避让2～4个危险目标船,达到了预期的研究目标,最后指出PIDVCA方法尚存的问题及日后研究方向。     

案例推理技术在银行信贷中的应用

案例推理CBR(Case Based Reasoning)是智能决策辅助系统（IDSS）中的一种重要推理技术。在问题进行求解过程中，根据靶案例采用最近邻匹配原则在案例库中搜索与之对应的匹配基案例，再根据其不同之处和一套相应的修改规则对基案例的解作调整，使结论适应新的情况，以帮助决策者形成决策。本文应用CBR对信贷客户的信用等级与信贷额度进行评估，将信贷客户情况与信贷案例库中案例比较，提取相似案例，参考其解决方案提出当前客户的信贷方案，用来辅助经办人员和决策人员的工作。     

船舶自动避碰仿真平台的构建与测试方法研究

船舶避碰智能决策的自动生成是实现船舶自动避碰的关键技术之一,如何利用船舶操纵模拟器技术来检验现阶段的研究成果是值得研究的课题。根据船舶避碰智能化方法的研究现状,简述船舶避碰智能自动化方法的基本思想;着重论述基于船舶操纵模拟器技术的“航行安全及自动避碰(NSACA)仿真测试平台”的构建及其实现船舶自动避碰仿真试验的方法;并列举一个典型的仿真试验示例加以分析。试验结果表明:该平台已实现了宽水域船舶避碰决策自动生成与避碰过程自动监控的测试,不失为一种行之有效的测试方法;与实船试验相比,这种测试方法具有灵活高效、安全性和经济性等优点。     

关联分析的操船环境危险度评价模型

操船环境是指对船舶操纵产生限制的影响因素,操船环境危险度评价结果直接影响船舶的正常航行,而当前方法操船环境危险度评价模型存在评价结果主观性强,评价精度低等不足。为了提高操船环境危险度评价效果,设计基于关联分析的操船环境危险度评价模型,首先分析当前操船环境危险度评价研究现状,并构建操船环境危险度评价的指标,然后采用关联分析方法对原始操船环境危险度评价指标进行处理,确定操船环境危险度评价的权值,最后根据关联分析结果处理操船环境危险度评价数据,并构建操船环境危险度评价模型。与其他操船环境危险度评价模型进行仿真对比实验,结果表明,本文模型可以合理确定每一种操船环境危险度评价指标的重要程度,得到高精度的操船环境危险度评价结果,而且操船环境危险度评价速度更快,可以为船舶安全管理者提供参考。     

案例推理技术在银行信贷中的应用

案例推理CBR（Case Based Reasoning)是智能决策辅助系统（IDSS）中的一种重要推理技术。在问题进行求解过程中，根据靶案例采用最近邻匹配原则在案例库中搜索与之对应的匹配其案例，再根据其不同之处和一套相应的修改规则对其案例的解作调整，使结论适应新的情况，以帮助决策者形成决策。本文应用CBR对信贷客户的信用等级与信贷客度进行评估，将信贷客户情况与信贷案例库中案例比较，提取相似案例，参考其解决方案提出当前客户的信贷方案，用来辅助经办人员和决策人员的工作。     

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.