学科分类
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181 个结果
  • 简介:SurvivabilityisoneoftheimportantissuesinATM-basednetworkssineevenasinglenetworkelementfailuremaycauseaseriousdataloss.Thispaperintroducesanewrestorationmechanismbasedonmulti-layerATMsurvivablenetworkmanagementarchitecture.ThismechanismintegratesthegeneralcontrolandrestorationcontrolbyestablishingtheWorkingVPslogicalnetwork,BackupVPslogicalnetworkandsparelogicalnetworkinordertooptimallyutilizethenetworkresourceswhilemaintainingtherestorationrequirements.

  • 标签: 异步传输模式 可生存性 恢复 集中控制
  • 简介:基于处理15Mt/a的综合精制/化学植物粗略、生产在“从事由任何适当工具精制,石蜡和aromatics最大化综合精制/化学植物的全面价值”的指南下面的乙烯的1.0Mt/a,专注于是必要的研究为在精炼厂和乙烯植物之间的材料的相互的供应的流动图和答案。在分析产品的化工物品板岩,作文和性质以后,优化综合精制/化学工厂以便减少投资和操作费用认识到综合工厂的价值的最大化被建议。

  • 标签: 价值最大化 炼油厂 化工厂 材料供应 优化整合 化学工厂
  • 简介:经济的产量或产品能被划分成服务产品和商品产品(由于生产,构造,农业和采矿)。迄今为止,通常,服务和商品产品是独立集体的生产。与分别地集中了于发展和商品的大量生产的第一和第二条工业革命相对照,然而,下一个或第三条工业革命集中于服务或商品的集成;它在第21世纪的这第二十年正在开始。第三条工业革命(TIR)基于三主要工艺的enablers的融合(即,大数据分析学,适应服务并且数字生产);他们支撑集成或服务或商品的集体定制。是在一份更早的报纸详细说明了,我们认为集体定制是供应和需求链的同时、即时的管理,基于一个分类,那能以它的underpinning部件和管理foci被定义。即时集体定制的好处不能作为商品被说大话,服务变得难区分,导致压到优势的经济并且作为servgoods在是co-produced消费顾客的工业化国家的即时优点同时co-producing制片人。

  • 标签: 综合服务 工业革命 商品 大批量生产 服务产品 实时管理
  • 简介:ThecurrentGIScanonlydealwith2-Dor2.5-Dinformationontheearthsurface.Anew3-Ddatastructureanddatamodelneedtobedesignedforthe3-DGIS.Thispaperanalyzesdiverse3-Dspatialphenomenafromminetogeologyandtheircomplicatedrelations,andproposesseveralnewkindsofspatialobjectsincludingcross-section,columnbodyanddigitalsurfacemodeltorepresentsomespecialspatialphenomenaliketunnelsandirregularsurfacesofanorebody.Anintegrateddatastructureincludingvector,rasterandobject-orienteddatamodelsisusedtorepresentvarious3-Dspatialobjectsandtheirrelations.Theintegrateddatastructureandobject-orienteddatamodelcanbeusedasbasestodesignandrealizea3-Dgeographicinformationsystem.

  • 标签: 3-D GEOGRAPHIC information system OBJECT-ORIENTED data
  • 简介:Ithasbeendebatedthatwhichofrasterandvectoristhemosteffective,fromtheviewpointsofstorageefficiency,processingefficiency,andabilitytocapturetheessenceofgeographicspaceforanapplication.Theremaybenoclearanswertothisdebate.Itseemsappropriatetonotethatthemaindifferencebetweenthemrelatestothedegreetowhichthespatialentitiesofinterestareexplicitinthedata. Ingeneral,rasterremotesensingimageallowstheinvestigatortomeasureandmonitorsurfaceelectromagneticwavevariationinwhichmostobjectsandthespatialinterrelationshipsbetweenthemareimplicit.Inpractice,therearemanypoorlyunderstoodtradeoffsincouplingremotesensingdatatoexistingthematicmaps.Mapsusepointsandlinestorepresentselectedfeaturesoftheenvironmentinageneralizedfashion,buttheobjectssuchasindividualpolygons,linesandpointswithinanimagearetypicallyunknown.  TheintegrationofremotesensinginformationintoaGISoccursnaturallyinarasterGISbecausebothdatastructuresareapproximatelythesame.Integrationintoavectorsystemrequiressomewhatmoreeffort,butithasbeenrecentlyachievedbyseveralGISandremotesensingvendors.Whenoneisstoringalargeamountofimagedatarelatedtosomeapplicationsintoaspatialdatabasesystem,itisnotpossibletoprocessthedataandtoobtainpolygonalrepresentationsofallobjectsthatwillbeofinteresttousersinadvance.Ontheotherhand,itmightbeofgreatvalueinsuchasystemtohaveavectorrepresentationofcertainimportantobjects.Forthisapplication,oneneedstodesignasystemwithbothrasterandvectorcapabilities,aswellastoolstointerrelatethem.Especially,asinFig.1,weneedtoprocessbothrasterandvectorsimultaneously.  Asdescribedabove,whileaspatialinformationsystemmayhaveseveraldatastructures,thesystemcouldbeextendedinseveralwayswhichcorrespondtothefollowingdifferentproperties(seeFig.2): 1)Thestuructureinforma

  • 标签: GRANULARITY the INTEGRATION of RS and
  • 简介:Watershedmanagementisanever-evolvingpracticeinvolvingthemanagementofland,water,biota,andotherresourcesinadefinedareaforecological,social,andeconomicpurposes.Inthispaper,weexplorethefollowingquestions:Howhaswatershedmanagementevolved?Whatnewtoolsareavailableandhowcantheybeintegratedintosustainablewatershedmanagement?Toaddressthesequestions,wediscusstheprocessofdevelopingintegratedwatershedmanagementstrategiesforsustainablemanagementthroughtheincorporationofadaptivemanagementtechniquesandtraditionalecologicalknowledge.Weaddressthenumerousbenefitsfromintegrationacrossdisciplinesandjurisdictionalboundaries,aswellastheincorporationoftechnologicaladvancements,suchasremotesensing,GIS,bigdata,andmulti-levelsocial-ecologicalsystemsanalysis,intowatershedmanagementstrategies.WeusethreecasestudiesfromChina,Europe,andCanadatoreviewthesuccessandfailureofintegratedwatershedmanagementinaddressingdifferentecological,social,andeconomicdilemmasingeographicallydiverselocations.Althoughprogresshasbeenmadeinwatershedmanagementstrategies,therearestillnumerousissuesimpedingsuccessfulmanagementoutcomes;manyofwhichcanberemediedthroughholisticmanagementapproaches,incorporationofcutting-edgescienceandtechnology,andcross-jurisdictionalcoordination.Weconcludebyhighlightingthatfuturewatershedmanagementwillneedtoaccountforclimatechangeimpactsbyemployingtechnologicaladvancementsandholistic,cross-disciplinaryapproachestoensurewatershedscontinuetoservetheirecological,social,andeconomicfunctions.Wepresentthreecasestudiesinthispaperasavaluableresourceforscientists,resourcemanagers,governmentagencies,andotherstakeholdersaimingtoimproveintegratedwatershedmanagementstrategiesandmoreefficientlyandsuccessfullyachieveecologicalandsocio-economicmanagementobjectives.

  • 标签: 流域综合管理 地理信息系统 社会生态 流域管理 经济功能 演变
  • 简介:ShoemakingisoneoftheareaswhereCAD/CAMapplicationisrapidlyincreasing.Thispaperintroducesanintegratedcomputeraidedshoemakingsystemincludinghumanfootmeasuring,last(woodenmodel)measuring,lastCAD/CAMandpatternCAD/CAM.Theprojectwassupportedbythe7thnationaleconomical5yearplan.Hightechnologies,suhasdigitalimageprocessing,patternrcognition,advancedgeometricalmodelingandaseriesofsophisticatedequipmentsanddevicesareap-pliedinthisintegratedsystem.Partsofthesystemhavebecomecommercialproducts.

  • 标签: Shoe-Making Digital PHOTOGRAMMETRY CLOSE RANGE Measuring
  • 简介:计划的三维的设计和轮船建设在这篇论文被描述的建模集成轮船的虚拟轮船汇编的一个新方法。模拟基于虚拟轮船汇编进程当模特儿的一个工作流模型也被建立;而且,在三维的设计和轮船建设计划的轮船之间的信息转变的一个方法被提出。满足在轮船在不同系统之间分享的信息的要求虚拟汇编,一个模拟数据库被使用软件工程设计方法和关系数据模型创造。用这个数据库的应用程序,轮船的信息三维的设计,计划的构造,和虚拟汇编能集成于一个系统。随后,这个新方法作为一个工具被使用模仿一艘轮船的虚拟集会,并且结果保证它的合理性和可靠性。

  • 标签: 集成建模方法 船舶建造 虚拟装配 关系数据模型 三维设计 信息共享
  • 简介:Akindofnovelbinaryphasecodenamedsidelobesuppressioncodeisproposedinthispaper.Itisdefinedtobethecodewhosecorrespondingoptimalsidelobesuppressionfilteroutputstheminimumsidelobes.Itisshownthattheredoexistsidelobesuppressioncodesbetterthantheconventionaloptimalcodes-Barkercodes.Forexample,thesidelobesuppressioncodeoflength11withfilteroflength39hasbettersidelobelevelupto17dBthanthatofBarkercodewiththesamecodelengthandfilterlength.

  • 标签: 双相编码 旁瓣抑制 最优码 滤波长度
  • 简介:ThispapergivesanoverallintroductiontothebasicconceptofLAC(location-awarecomputing)anditsdevelopmentstatus,putsforwardanintegratedlocation-awarecomputingarchitecturewhichisusefulfordesigningthereasonablelogicalmodelofLBS(location-basedservice).Finally,abriefintroductionisconductedonaLACexperimentalprototype,whichactsasamobileurbantourismassistant.

  • 标签: 空间信息服务 地理信息系统 局部计算 分层结构 逻辑模型
  • 简介:Numericalsimulationofinjectionmoldinghavehadsuccessinpredictingthebehaviorofpolymermeltinextremelycomplicatedgeometries.Mostofthecurrentnumericalsolutionsarebasedonfinite-element/finite-difference/boundary-element/volume-controlmethodsandthesurfacemodel.ThispaperdiscussesthedevelopmentofanintegratedCAEsystemforinjectionmoldingindetail,andpresentsthemathematicsfornumericalsimulationoffilling,packing,cooling,stressandwarpageininjectionmolding.ThedevelopedsystemnamedasHsCAE3Disintroducedattheend.

  • 标签: INJECTION MOLDING NUMERICAL simulation CAD/CAE/CAM object-orientedanalysis
  • 简介:Inthispaper,wepresentsimulationresultsofanelectroopticalvariableopticalattenuator(VOA)inte-gratedinsilicon-on-insulatorwaveguide.Thedeviceisfunctionallybasedonfreecarriersabsorptiontoachieveattenuation.Beampropagationmethod(BPM)andtwo-dimensionalsemiconductordevicesimu-lationtoolPISCES-Ⅱwereusedtoanalyzethedcandtransientcharacteristicsofthedevice.Thedevicehasaresponsetime(includingrisetimeandfalltime)lessthan200ns,muchfasterthanthethermoopticandmicro-electromechanicalsystems(MEMSs)basedVOAs.

  • 标签: 硅基绝缘体 VOA 光电器件 衰减器 PISCES-Ⅱ 仿真
  • 简介:TheAndroidplatformisthemostpopularmobileoperatingsystem.WiththeincreaseofthenumberofAndroidusers,alotofsecurityissueshaveoccurred.InordertodetectthemaliciousbehaviorsfortheinstalledAndroidApps,inthispaper,weproposeanAndroidmalwaredetectingschemebyintegratingstaticanddynamicanalysismethods.WeuseAndroguardandDroidBoxtoextractthefeatures,andthenremovetheirrelevantfeatures.Thenweemploythesupportvectormachine(SVM)toclassifytheAndroidmalwareandbenignware.Fromtheresultofourproposedscheme,theproposedintegratedstaticanddynamicanalysisschemewithSVMcaneffectivelydetecttheAndroidmalware.

  • 标签: 恶意软件 动态集成 分析方案 静态 动态分析方法 支持向量机