简介：基于HJ－1A／1B卫星ccD数据，建立河北省近海海域沿岸冰、初生冰、灰冰和灰白冰的解译标志。利用易康分类软件，采用多边形的面向对象分类方法，根据海冰类型和其他地物特征，对HJ－1A／1B卫星数据进行多尺度分割。选择各类型海冰样本，采用最邻近分类像元算法对海冰进行分类。统计河北省海域及秦皇岛港、曹妃句、黄骅港等重点区各类型海冰分布面积，分析海冰分类分布情况。最后，介绍了应用HJ-1A／1B卫星遥感数据提取河北近海海域海冰分类分布信息的实例。

简介：各省、自治区、直辖市人民政府，国务院各部委、各直属机构：我闻人多地少，耕地资源稀缺，当前又正处于工业化、城镇化快速发展时期，建设用地供需矛盾十分突出。切实保护耕地，大力促进节约集约用地，走出一条建设占地少、利用效率高的符合我旧国情的十地利用新路了，是关系民族生存根基和国家长远利益的人计，是全面贯彻落实科学发艉观的具体要求，是我国必须长期坚持的一条根本方针。现就有关问题通知如下：

简介：'杭电评价科学研究院'(ID:casee2017)是以杭州电子科技大学中国科教评价研究院为账号主体的微信公众平台,关注并发布国内外评价领域相关文章。中国科教评价研究院是杭州电子科技大学于2017年成立的一所相对独立的重点评价研究机构。

简介：摘要:近几年我国经济不断发展的同时，城市风险也在不断增加、地震、疫情、暴雨、干旱等天气持续影响着环境和人们生活的质量，城市中如何在突发事件面前的迅速应变能力是考验一个城市是否“韧性”的重要标志。而社区作为社会最小的单元，与“人”生活最为密切的空间，其应变能力的高低决定

简介：摘要:三尖瓣反流是心脏疾病中一类以瓣膜病变为主的疾病。健康人也存在生理性三尖瓣反流，但病理性的三尖瓣反流虽然早期临床表现不明显,若不及时干预,进展到晚期时会出现严重的心力衰竭,危机患者生命。超声心动图对于三尖瓣反流的诊断有着举足轻重的作用。但二维超声心动图对于三尖瓣反流的诊断存在一定缺陷,会对诊断结果、临床治疗及预后产生一定的不确定性。三维超声心动图的逐渐问世于临床,其在一些方面弥补了二维超声心动图的技术缺陷,为明确三尖瓣反流的病因机制、指导临床治疗和做出预后评估提供了详细的线索。

简介：隋唐以来，扬州即以经济繁荣而著称，是一座历史文化名城。进入清代．经康熙、雍正、乾隆三朝百年的发展，已成为我国东南沿海的贸易中心。经济的繁荣使各地的文人名士汇集扬州，进行诗文书画交流与创作，促进了地区文化艺术事业的兴盛，出现了一批画家，“扬州八怪”是其中最具有代表的画家群体。

简介：Thispaperdiscussesthenumericalmodelingofthedynamiccoupledanalysisofthefloatingplatformandmooring/risersusingtheasynchronouscouplingalgorithmwiththepurposetoimprovethecomputationalefficiencywhenmultiplelinesareconnectedtotheplatform.Thenumericalmodeloftheplatformmotionsimulationinwaveispresented.Additionally,howtheasynchronouscouplingalgorithmisimplementedduringthedynamiccouplinganalysisisintroduced.ThroughacomparisonofthenumericalresultsofourdevelopedmodelwithcommercialsoftwareforaSPARplatform,thedevelopednumericalmodelischeckedandvalidated.

简介：量计算在最近的年里经历了快速的开发。由于可伸缩性上的限制，个人量计算机在不久的将来仍然似乎稍微不现实。为平常的用户的第一台实际的量计算机是可能的在云上。然而，仅当安全被保证，云计算的采纳是可能的。同构的加密是允许计算没有解密他们，在加密数据上被表现的一个密码的协议，因此遮蔽计算很好被适合。这里，我们首先在IBM云量计算机站台上使用了同构的加密。在我们的实验，当保护我们的隐私时，我们成功地为线性方程实现了一个量算法。这示范打开一条可行路径到云量信息技术的开发的下一个阶段。

简介：由于虚拟漫游系统具有沉浸性、交互性、构想性的特征，所以虚拟漫游系统被广泛应用在各个领域。出于学院工作和宣传的需要，对基于VR—Platform平台的虚拟校园漫游系统进行了研究，并且借助3DSMax建模软件，建立了一个完整的桌面型虚拟校园漫游系统。它的建立为校园规划建设、参观导航、学校对外宣传提供了一个智能化的平台。

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简介：<正>Anadvancedsilica-dominatedmatrixtechnologyplatformanditsapplicationwereintroducedinthispaper.Throughnovelproprietaryprocessing,theadvancedsilica-dominatedmatrixwaspreparedfromtheuniquesilicasolandpseudo-boehmite.Thematrixporesizedistributionandaciditycanbetailoredtoprovideoptimalcoke-selectivityandbottoms-crackingabilitymatchedtofeedstockcharacteristics.AnovelFCCcatalyst(RSC-2006)forreducingcokeandslurryyieldswasdevelopedbasedonthesilica-dominatedmatrixtechnologyplatform.TheresultsofcommercialapplicationofthesaidtechnologyindicatedthattheRSC-2006catalystexhibitedexcellentperformanceonbottomscracking,cokeselectivityandhighvalueproductsyields.

简介：Basedontheplatformofmobilecarriersatellitetrackinghasawiderangeofapplications.Thepaperadoptstheadvancedmethodoftostepresponseidentify,usingthedataobtainedbytheexperimentmodelofhigh-speedacquisition,usingthemethodoftheleastsquares,finallytheantennacontrolsystemmodelfunctionwasidentified.Makeuseofintegralseparationalgorithm,simulinksimulationandexperimentanalysistosetthecontrolparametersofit.Stimulatethesignalantennacontrolsystemunderinterfering.Theexperimentofthesimulationexperimentshowedthattheantennacontrolsystemmodelisstablewithlittleerror.

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简介：HurricanesKatrinaandRitaresultedinthelargestnumberofplatformsdestroyedanddamagedinthehistoryofGulfofMexicooperations.Withthetrendofglobalwarming,sealevelrisingandthefrequencyandintensityoftyphoonincrease.Howtodetermineareasonabledeckelevationagainstthelargesthurricanewaveshasbecomeakeyissueinoffshoreplatformsdesignandconstructionfortheunificationofeconomyandsafety.Inthispaper,themultivariatecompoundextremevaluedistribution(MCEVD)modelisusedtopredictthedeckelevationwithdifferentcombinationoftide,surgeheight,andcrestheight.ComparedwithpracticerecommendedbyAmericanPetroleumInstitute(API),thepredictionbyMCEVDhasprobabilisticmeaninganduniversality.

简介：-Dynamicinteractioncharacteristicsofthemodeldeeplyembeddedplatformandfoundationsoilarestudiedbymeansofdynamicsubstructuringinterfacetransformationsynthesisanddynamiccondensation.Thetheoreticalanalysis,computerprogramsandpracticalexamplesarepresented;andtheresultsarecomparedwiththoseobtainedbystaticalcondensationmethodandfiniteelementmethod.

简介：Surfacequalityhasbeenoneofthekeyfactorsinfluencingtheongoingimprovementofthequalityofsteel.Therefore,itisurgenttoprovidemethodsforefficientsupervisionofsurfacedefects.Thispaperfirstexpressedthemainproblemsexistingindefectmanagementandthenfocusedonconstructingadataplatformofsurfacedefectmanagementusingamultidimensionaldatabase.Finally,someon-lineapplicationsoftheplatformatBaosteelweredemonstrated.Resultsshowthattheconstructedmultidimensionaldatabaseprovidesmorestructureddefectdata,andthusitissuitableforswiftandmulti-angleanalysisofthedefectdata.

简介：Inthispaper,reliabilityanalysisfortheoffshorejacketplatformwiththeinteractionofstructure-pile-soilunderextremeenvironmentalloadsiscarriedout.Theinherentuncertaintiesoftheenvironmentalload,foundationsoil,platformitself,andcalculatingmodelsareevaluated.Theactionofextremeloadsontheoffshoreplatformismodeledasafunctionofextremewaveheight.Thesystemcapacityofthewholeplatformisdeterminedbynonlinearpushoveranalysis,andtherelevantprobabilitypropertyisobtainedbythesimulationmethod.Thereliabilitymodelforthewholejacketplatformisdescribedastherelationshipbetweentheloadandresistancebasedontheoffshoredesigncodes.Thereliabilityofwholeplatformiscalculatedbytheanalyticalmethodandtheimportancesamplingmethodonthebasisofacasestudyforatripodjacketplatform.

简介：Alongwiththeflourishingofthewindenergyindustry,floatingoffshorewindturbineshavearousedmuchinterestamongtheacademiaaswellasenterprises.Inthispaper,theeffectsofthesupportingplatformmotionontheaerodynamicsofafloatingwindturbinearestudiedusingtheopensourceCFDframeworkOpenFOAM.Theplatformmotionresponses,includingsurge,heaveandpitch,aresuperimposedontotherotationofthewindturbine.Thrustandtorqueonthewindturbinearecomparedandanalysedforthecasesofdifferentplatformmotionpatternstogetherwiththeflowfield.Itisshownthatthemovementofthesupportingplatformcanhavelargeinfluencesonafloatingoffshorewindturbineandthusneedstobeconsideredcarefullyduringthedesignprocess.

简介：Theplatformschedulingprobleminbattlefieldisoneoftheimportantproblemsinmilitaryoperationalresearch.Itneedstominimizemissioncompletingtimeandmeanwhilemaximizethemissioncompletingaccuracywithalimitednumberofplatforms.Thoughthetraditionalcertainmodelsobtainsomegoodresults,uncertainmodelisstillneededtobeintroducedsincethebattlefieldenvironmentiscomplexandunstable.Anuncertainmodelisprposedfortheplatformschedulingproblem.Relatedparametersinthismodelaresettobefuzzyorstochastic.Duetotheinherentdisadvantageofthesolvingmethodsfortraditionalmodels,anewmethodisproposedtosolvetheuncertainmodel.Finally,thepracticabilityandavailabilityoftheproposedmethodaredemonstratedwithacaseofjointcampaign.