简介：通过分析目前船员信息管理存在的问题,提出利用船员卡来代替原来的管理模式,并就船员卡的选择、卡的内容及功能提出自己的看法.

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简介：Basedontheprincipleofimpedancemismatching,theperformanceofrigidvibrationisolationmassinimpedingvibrationwavepropagationwasdiscussedfromtheperspectiveofwaveapproach.BasedonFEM,theinfluenceofitsweightaswellasthecross-sectionshapeparametersontheisolationperformanceofrigidvibrationisolationmasswasstudiedthroughnumericalsimulation.Theresultsshowthatrigidvibrationisolationmasscaneffectivelyimpedethepropagationofthemediumandhighfrequencyvibrationwaves,andtheheavierthevibrationisolationmass,thebettertheisolationperformance.Forlowfrequencywaves,thevibrationisolationeffectisnotsoobvious;forarectangularvibrationisolationmass,theisolationperformancecouldbeeffectivelyimprovedbyincreasingthecross-sectionheightandreducingthecross-sectionwidth.Ausefulreferencewasprovidedfortheapplicationofrigidvibrationisolationmassestothevibrationisolationandnoisereductionofshipstructure.

简介：介绍了一种基于Spalding公式拟合的脊状表面减阻测试方法，相比于用天平等测力设备测试的方法，其优点在于简便实用，从应用实例来看，准确性也是令人满意的．由于该方法依靠的数据基础是壁面边界层内层速度分布，因此，速度分布测量的准确程度是影响该方法测试结果准确与否的决定因素．

简介：马士基航运近日宣布,为方便出口商（尤其是中小企业）开展业务,解决融资难问题,集团开启了一项新的贸易融资业务＂MaerskTradeFinance＂（以下简称MTF）。该业务率先在印度试点,预计未来12至18个月内,仅在印度就可达2亿美元规模。MTF还将在新加坡、荷兰、西班牙、北美、阿联酋进行后续推广。其中北美目前已覆盖美国的佐治亚州、南卡罗莱纳州和德克萨斯州,受美国银行管理限制需要逐州推进。

简介：基于“11规则”的航线设计方案逐渐得到各培训机构的认可，从目前评估的状况和题卡设计来看还存在一些问题。为实现在规定的时间内既能完成评估内容又能考核学员能力，依据评估培训的经验和对新大纲和规范的理解，对航线设计及航图作业评估内容和流程做了梳理，以期实现评估内容的多样化和标准化。

简介：10月14日下午，从海南海事局防台视频会了解到，今年第20号台风“卡努”预计将于15日夜间到16日早晨以12～13级的强度在三亚到广东湛江沿海地区登陆，对海南岛及其附近海域造成较大影响。

简介：Inconsideringthetheoryofstructuraldynamicoptimizationdesign,adesignmethodofthestructuralstyleofshipcompositebracewithrigidvibrationisolationmasswasstudied.Twokindsofstructuraldynamicoptimizationformulationsminimizingthevibrationaccelerationofthenon-pressurehullontherestrainingconditionofthegrossweightoftheshipcabinwereestablished:1)dynamicoptimizationofthesectionaldimensionsoftherigidvibrationisolationmassinthecompositebrace;2)dynamicoptimizationofthearrangingpositionoftherigidvibrationisolationmass.Throughtheoptimizationresults,sectionaldimensionsandthearrangingpositionoftherigidvibrationisolationmasswithbetterperformanceinreducingvibrationweregained,andsomereferencewasprovidedforpracticalengineeringdesignsaswellasenrichmentofthedesignmethodofanovelshipvibration-isolationbrace.

简介：Rigidblockingmassesarelocatedinthetypicalbasestructureofapowercabinbasedontheimpedancemismatchprinciple.Bycombiningtheacoustic-structuralcouplingmethodandstatisticalenergyanalysis,thefull-bandvibrationandsoundradiationreductioneffectofvibrationisolationmasseslocatedinabasestructurewasresearched.Theinfluenceoftheblockingmass’cross-sectionsizeandshapeparametersandthelayoutlocationofthebaseisolationperformancewasdiscussed.Furthermore,theeffectivenessofrigidvibrationisolationdesignofthebasestructurewasvalidated.Theresultsshowthatthemediumandhighfrequencyvibrationandsoundradiationofapowercabinareeffectivelyreducedbyablockingmass.Concerningweightincrementandsectionrequirement,suitablyincreasingtheblockingmasssizeandsectionheightandreducingsectionwidthcanresultinanefficiency-costratio.