简介：给满足可控制性的一个交换线性控制系统等级状况，这被显示出，以如此的一个方法构造一个非交换式的同质的多项式控制系统，后者的轨道可能任意地好是可能的有限时间间隔上的接近的标准。

简介：ＡＣＡＤＳＹＳＴＥＭＦＯＲＣＡＲＰＥＴＤＥＳＩＧＮＭａＹｕｈａｉ；ＷａｎｇＹａｎ；ＳｈｉＷａｎｃｈｕｎＡＣＡＤＳＹＳＴＥＭＦＯＲＣＡＲＰＥＴＤＥＳＩＧＮ￥ＭａＹｕｈａｉ；ＷａｎｇＹａｎ；ＳｈｉＷａｎｃｈｕｎＡｂｓｔｒａｃｔＴｈｉｓｐａｐｅｒｐｒｅｓｅ...

简介：VoIP(VoiceoverIP)isarapidlygrowingareawithgreatmarketpotential.Topromoteitforbothcommericalandresearchpurposes,aprototypeVoIPsystembasedonstate-of-the-artotorolacommunicationtechniqueshasbeendeveloped.ItisagatewaysystemintegratingaPBXandaVoIPmodule.AllcomponentsthatH.323definestosupprotVoIPareimplementedintheVoIPmodule,thoughinasimplifiedmanner,Asanembeddedsystem,thesystemfeaturesrealtimenessandtaskdistributiveness.Anumberofaddiitonaltechniquesareusedtoimprovetheperformance,includingnoisesuppression,zerocopy,andbufferstructureoptimization.Whenrefinedininteroperability,thesystemwillalsoreadilyserveasaproduct.

简介：Typesystemprovidesaprecisedescriptionofaprogramminglanguage.Thisisaprerequisitefortheimplementationanduseoflanguage.Italsoconductsmechanicalandtransparenttype-checkingonprogramstopreventtheoccurrenceofexecutionerrorduringtherunningofprograms.So,itcanbesaidthat,ontheonehand,typesystemworksasaformaltooltodomathematicalanalysisoflanguage;ontheotherhand,itisaformalmethodforrigorouslyandpreciselydesigningandimplementinglanguage.Inthispaper,somebasicconceptsoftypesystemarediscussedfirst.Andthen,theimplementationofagraph-rewriting-basedfunctionallanguage－SClean'stypesystemisgivenindetails.Itishopedthattheproposedmethodofusingandimplementingtypesystemisofpracticalusefulness.

简介：在这篇论文，有空间的一个追踪的系统虚拟反馈(SVF)被介绍。完整的追踪系统到空格被关上是视线(LOS)的虚拟反馈线，而是在系统的部分例如追踪的分系统和伺服分系统，处于状态开环。因为追踪模型的SVF被使用，改正的环能在这系统体系结构被移开。系统的追踪的速度和精确性极大地因此被改进。

简介：AnelectromagnetdesignsystemisdevelopedusingVisualC++languageandOpenGLtechnologytovisualizeparametric3Dmodel.Thesystemconsistsofprimarydesign,optimizationdesign,dynamicandstaticcharacteristics,andvisualsimulation.Allempiricalparametersandcurvesusedindesignprocessarestoredindatabase.Throughhuman-computerinteractions,anelectromagneticsystemcanbedesignedconvenientlywiththeresultsandcharacteristicscurvesdisplayedingraphicmodel.Usingthissystemcangreatlyshortentheprocessofproductdesign,andtheresultssatisfytechnicalrequirements.

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简介：Thedistributedcomputersystemdescribedinthispaperisasetofcomputernodesinterconnectedinaninterconnectionnetworkviapacket-switchinginterfaces.Thenodescommunicatewitheachotherbymeansofmessage-passingprotocols.Thispaperpresentstheimplementationofrendezvousfacilitiesashigh-levelprimitivesprovidedbyaparallelprogramminglanguagetosupportinterprocesscommunicationandsynchronization.

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简介：这篇论文处理格子技术没象1990年代的网技术一样快传播的问题。在过去的10年里，可观的努力被放进格子计算。许多进步被取得了；更重要地，基础质问；这块地的必要问题正在出现。这篇论文集中于网格系统软件研究的区域，；主张网格系统软件的可用性必须被提高。它识别四个可用性问题，从国际格子研究经验绘画。它也在探讨这些挑战由Vega格子队介绍进展。

简介：Despiteitsname,e-commerceisnotfullyautomated.Typically,onlinetransactionsrequireasignificantlevelofhumanintervention.Customersundertakethesearchforproducts,services,potentialvendorsandbusinesspartners.Theyevaluatealternatives,decidewhatgoodstobuyandwhen,fromwhichvendor,andhowmuchtheyarewillingtopayfor.Theyengageinpotentialnegotiations,carryoutthetransactionsandsoon.Asthosemarketsbecomemature,newproductsandservices,aswellasnewpractices,arebeginningtoappear.Thereisalreadyampleevidencethatagent-basedtechnologywillbecrucialforthesedevelopments,reflectingthatbothbuyersandsellersbeingvigorouslyseektechniquestoimprovetheirperformance.ThisworksurveysseveraloftheseagentsthathelpelectroniccommercesystemsbydescribingtheirrolesinthecontextofaConsumerBuyingBehavior(CBB)model.TheCBBmodelpresentedaugmentstraditionalmarketingmodelswithconceptsfromSoftwareAgentsresearchtoaccommodateelectronicmarkets.

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简介：ThispaperintroducesthecurrentsituationofdomesticfurnitureproductionaswellasworldfurnitureCADproducts,putsforwardthenecessityofdevelopingadedicatedCADsystem_WFCADanditsmainfunctions,Itanalyzesindetailtheappliedtechnologyandkeytechniques,includinggeometricmodeling,assembly,jointdesign,databaselinkingandmanagement.TheapplicationofWFCADinfurnituremanufacturingenterprisesanditsfurtherimprovementareoutlined.

简介：Inthispaper,anovelbiontetricidentificationsystemispresentedtoidentifyaperson'sidentitybyhis/herpalmprint.Incontrasttoexistingpalmprintsystemsforcriminalapplications,theproposedsystemtargetsatthecivilapplications,whichrequireidentifyingapersoninalargedatabasewithhighaccuracyinreal-time.Thesystemisconstitutedbyfourmajorcomponents:UserInterfaceModule,AcquisitionModule,RecognitionModuleandExternalModule.Morethan7,000palmprintimageshavebeencollectedtotesttheperformanceofthesystem.Thesystemcanidentify400palmswithalowfalseacceptancerate,0.02%,andahighgenuineacceptancerate,98.83%.Forverification,thesystemcanoperateatafalseacceptancerate,0.017%andafalserejectionrate,0.86%.Theexecutiontimeforthewholeprocessincludingimagecollection,preprocessing,featureextractionandmatchingislessthan1second.

简介：Wehavedevelopedafuzzyneuralexpertsystemthathastheprecisionandlearningabilityofaneuralnetwork.Knowledgeisacquiredfromdomainexpertsasfuzzyrulesandmembershipfunctions.Then,theyareconvertedintoaneuralnetworkwhichimplementsfuzzyinferencewithoutrulematching.Theneuralnetworkisappliedtoproblem-solvingandlearnsfromthedataobtainedduringoperationtoenhancetheaccuracy.Thelearningabilityoftheneuralnetworkmakesiteasytomodifythemembershipfunctionsdefinedbydomainexperts.Also,bymodifyingtheweightsofneuralnetworksadaptively,theproblemofbeliefpropagationinconventionalexpertsystemscanbesolvedeasily.Convertingtheneuralnetworkbackintofuzzyrulesandmembershipfunctionshelpsexplaintheinnerrepresentationandoperationoftheneuralnetwork.

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简介：在一个善跑的马拉松运动员身上是很难找到多余脂肪的，因为只有轻装上阵，才可健步如飞。同样，在一个稳定快速的系统里，也应该没有冗余文件来影响系统的运行。经过几个月的使用，相信你的系统已经臃肿不堪了吧，现在让我们踏出长假清理计划的第一步：系统清理！不懂注册表?不懂系统优化?不要紧!

简介：在这份报纸，我们在场Tianhe-2互连传递服务的网络和消息。我们描述路由器和网络接口芯片的体系结构，并且加亮有效地支持高效通讯的一套硬件和软件特征，在遥远的直接存储器存取上变化，集体优化，硬件启用可靠端对端的通讯，用户级的消息过去服务，等等。测量硬件表演结果也被介绍。