结构MTMD振动控制参数优化研究

研究了结构ＳＤＯＦ－ＭＴＭＤ系统在随机激励下的响应,应用谱分析方法优化了ＭＴ－ＭＤ参数,从工程应用实际出给出了其设计方法,数值分析表明,在相同质量比下ＭＴＭＤ的减效果优于单个ＴＭＤ。     

MDT在船舶机舱动力管系布置中的应用

在ＭＤＴ（Ｍｅｃｈａｎｉｃａｌ ＤｅｓｋＴｏｐ）平台上实现了船舶机舱动力管系的参数化设计与布置。该方法与传统造船模式相比,可大大降低管系设计与布置中的返工率和管材浪费。编制的三维实体建模软件包可进行压缩空气管系、燃油与滑油管系的设计及管系绘制与布置工作,并可在三维可视化环境中进行干涉检查。     

实时环境分布式数据管理的几个问题

针对现代海战环境下数据的非结构化、分散、广泛、实时等特征,并参照英国海军ＡＤＤＡＭ（ＡＤｉｓｔｒｉｂｕｔｅｄ Ｄａｔａｂａｓｅ Ａｐｐｌｉｃａｔｉｏｎ Ｍａｎａｇｅｍｅｎｔ Ｓｙｓｔｅｍ）系统,提出了实时环境下海军分布式指挥和控制系统ＲＮＤＣＣＳ（Ｒｉｎｔｉｍｅ Ｎａｖａｌ Ｄｉｓｔｒｉｂｕｔｅｄ Ｃｏｍｍａｎｄ ａｎｄ Ｃｏｎｔｒｏｌ Ｓｙｓｔｅｍ）。同时,详细讨论了实时环境下分布式数据管理遇到     

关于时频频分布的一点讨论

本文简要地讨论了时频分布（ＴＦＤｓ）的概念和原理。作者由信号（包括确定性的,平稳的和非平稳的）引入频谱分布的ＴＦＤｓ。ＴＦＤｓ中的核函数设计主要有两方面的关键问题,其一是所选取的核函数应能在时域和频域都能获得很高的分辨率;其二是所设计的核函数应能在对信号进行ＴＦ分析时尽可能多地获得自项分量而使交叉项分量被遏制。ＴＦＤｓ主要应用领域是多年来令人感到困扰的非平稳信号分析,因此,二十年来ＴＦＤｓ已成为处     

柴油机活塞的低周热疲劳寿命预测与安全性评价

运用ＡＤＩＮＡＴ和ＡＤＩＮＡ程序计算了１２Ｖ１８０和４２－１６０柴油机活塞的轴对称温度场和循环弹塑性应力应变场以及Ｍｉｓｅｓ当量应力应变场。根据“起动－停车”波形，采用带环状缺口的圆柱形试件，进行了热疲劳和高温低周疲劳模拟试验试验和计算表明：当量应变范围与疲劳寿命之间存在着Ｍａｎｓｏｎ－Ｃｏｆｆｉｎ公式关系，且不受试件结构形状和尺寸的影响；     

DSP的A／D及D／A接口电路设计实现

针对数字信号处理器（ＤＳＰ）在数字控制系统中应用的要求，介绍了ＤＳＰ典型芯片ＴＭＳ３２０Ｃ２５的基本特点，给出了ＴＭＳ３２０Ｃ２５的Ａ／Ｄ及Ｄ／Ａ接口的实用电路。     

意大利高速船发展概况

介绍意大利芬康蒂艾里造船公司开发的ＭＤＶ１２００Ｐｅｇａｓｕｓ型、ＭＤＶ７００Ｖｅｇａ型、ＭＤＶ１４００型、ＭＤＶ２２００Ｊｕｐｉｔｅｒ型、ＭＤＶ３０００Ｊｕｐｉｔｅｒ型和ＳｕｐｅｒＳｅａＣａｔ型高速单体客／车渡船以及劳特里奎兹造船公司推出的Ｓｅａｇｕｌｌ４００型双体客船和Ｆｏｉｌｍａｓｔｅｒ型水翼客船。     

舰船指挥舱室强噪声环境下语音识别

介绍了一个舰船指挥舱室强噪声环境下的汉语语音识别系统,根据充语语音特点,同时频参数,实现了强背景噪声下的音分分割和端点检测,用ＲＡＳＴＡ－ＳＤＡ技术提取鲁棒的语音特征,在８５￣９０ｄＢ的背景噪声下,对２００条口令,第一候选正识率大于９０％,并在ＴＳ３２０Ｃ３０支持下,响应时间小于１ｓ,做到了实时识别。     

对随机优势决策理论的两个问题的研究

研究了ＳＳＤ准则与Ｍ－Ｖ准则在选择理论上的一致性，同时还对ＴＳＤ准则及其意义进行了有益的分析。     

字符式点阵液晶显示器在单头刺绣机电脑中的应用

主要介绍了字符式点阵液晶显示器级件ＥＤＭ－１６０２Ｂ的特点及性能，对内部结构做了简要叙述，以ＥＤＭ－１６０２Ｂ与计算机ＡＴ总线接口为例介绍了硬件设计及软件编程。     

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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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.     

某海港码头的撞损修复

依据码头撞击受损区域调查检测结果,对受损构件提出合理的修复方案,为码头的安全运行提供保障。