船舶物流运输中的最优航线选取模型设计

为了解决传统船舶最优航线选取模型最优航线选取效率低、精准度差的难题,提出船舶最优航线选取模型研究。依据海上运输环境信息,通过全局航线规划算法对船舶运输安全区域进行划分,以此为基础,采用Dijkstra算法对船舶安全航线进行获取,以得到的船舶安全航线为依据,采用离散点法对船舶最优航线进行选取,实现船舶最优航线选取模型的构建。通过实验结果显示,与传统船舶最优航线选取模型相比较,构建的船舶最优航线选取模型极大地提升了最优航线选取效率与精准度,充分说明构建的船舶最优航线选取模型具备更好的性能。     

Douglas-Peuker算法在自动生成航线方法中的应用

船舶航行的日益频繁对航线设计提出了更高的要求。为了提高船舶运输的效率和安全性,传统依照纸质地图设计航线的方法已不能满足要求。为了在保障安全和效率的前提下提高航线质量,本文使用电子海图结合AIS系统监控船舶航行状态,实时上传海洋及船舶信息,并使用Douglas-Peuker算法依据海洋实时信息修正航线,提高了船舶航行的安全性。     

大区域船舶物流最优航线选取模型设计

针对传统的最优航线选取方法一直存在选取效果差、时间长的问题,提出大区域船舶物流最优航线选取模型。该方法先采用采用粗糙集理论计算权值,通过可信性理论构建大区域船舶物流航线选择期望值及规划模型,并采用上限和下限的方式约束物流配送信息素,计算大区域船舶物流航线配送概率,并以此为基础,通过船舶物流信息筛选,构建大区域船舶物流航线选取模型。实验结果比发现,采用改进最优航线选取模型时,其航线选取时间及航线长度均要优于传统方法,具有一定的优势。     

基于数据挖掘的船舶航线自动控制技术

构建船舶航行运动学模型,分析船舶航海过程中的关键参数以及控制参量,通过数据挖掘采集船舶航线自动控制参量和关键数据,采用自适应信息融合方法融合关键数据中的特征.获取特征性路径条件后,采用大数据蚁群优化算法,优化特征性路径条件和自动控制参量,实现船舶航线自动优化控制.结果表明,该技术具备可靠的船舶航线挖掘性能,可获取最佳的...     

基于MSVG数据的船舶航线可视化

为改善船舶航线的可视化效果,解决信息丢失、效率较低等问题,提出一种基于MSVG数据的船舶航线可视化方法,根据MSVG和航线的特点,分层组织空间数据,构建可视化框架,阐述其基本原理是从MSVG数据解析、船舶航线经纬度实时读取和航线要素可视化入手,设计并实现船舶航线的可视化.     

基于大数据分析的海上智能航线设计

本文基于大数据分析方法提出了一种船舶智能航线设计方法。通过基础电子海图地理信息数据提取和航行知识专题数据库的标准建设,对船舶航线历史大数据进行分析,计算出港口到港口、任意点到港口、任意点到任意点的最优航线,并以珠江口船舶航线设计为例进行了PC端和手机APP终端的设计。     

基于视觉传达的船舶自动导航系统

为了提升自动导航效果,设计基于视觉传达的船舶自动导航系统。利用视觉传达技术采集船舶图像,通过回溯处理模块获取高精度图像信息;利用系统软件线程实现模块间通信,依据图像信息制定航行计划,依据高精度图像信息实现航线设置、航线偏移报警与保存航迹功能;采用船舶目标跟踪方法得到船舶的位置和航向角信息,利用人机交互模块完成海图漫游、查询与航线管理等操作。实验证明,该系统可合理设计船舶航线,航行轨迹跟踪精度高。     

基于模糊信息源的船舶航线补充评价方法

考虑到船舶航线评价不仅关系到船舶航行安全,也与船舶的运营效益密切相关,提出基于模糊信息源的船舶航线补充评价方法,充分利用信息的价值修正指标权重,使评价的结果更有参考价值。     

基于NoSQL数据库的AIS航线设计研究

船舶运输需要充分考虑安全性和经济性,合适的航线能够为船舶安全运输提供有效保证,传统依靠纸质海图和电子海图的航线设计存在实时性不强、精度不够等问题。本文提出一种基于NoSQL数据库和AIS数据的航线自动设计方法,对其中的关键技术进行了研究,包括航线自动规划技术路线、NoSQL数据预处理以及航线自动规划方法。在航线自动规划方法中,设计了基于AIS的航线自动规划流程,使用DBSCAN算法对航迹数据进行了聚类分析。本文的研究成果可以为船舶航线自动规划提供有效辅助。     

船舶航线远程控制网络攻击信息实时检测方法

传统船舶航线控制网络信息攻击检测方法,受到远程数据核编码器数据同步的时间不对称影响,导致攻击节点数据核受损信息无同检测算法检测量实时同步,从而出现检测响应出现延迟,降低了检测方法的整体效果。根据数据核编码器数据同步特点,提出船舶航线远程控制网络攻击信息实时检测方法研究。首先,对远程数据核编码器进行计算变量的同步优化;然后,引入布谷鸟算法根据编码器计算特征量,对被远程攻击受损数据进行节点定位;最后,通过数据标准化计算,完成对攻击数据节点位置的确定,完成对船舶航线远程控制网络攻击信息实时检测。通过与传统检测方法的实验数据对比结果,证明提出方法的有效性。     

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

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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.