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简介：Informationfiltering(IF)systemsareimportantforpersonalizedinformationservice.However,mostcurrentIFsystemssufferfromlowqualityandlongtrainingtime.Inthispaper,arefinedevolvinginformationfilteringmethodispresented.Thismethoddescribesuser'sinformationneedfrommulti-aspectsandimprovesfilteringqualitythroughaprocesslikenaturalselection.Experimentalresultshowsthismethodcanshortentrainingtime,improvefilteringquality,andreducetherelevancebetweenfilteringresultsandtrainingsequence.

简介：Thispaperanalyzesaqueuemode]ofthepollingsystemwithlimitedservice(K=1)indiscretetime.BytheimbeddedMarkovchaintheoryandtheprobabilitygeneratingfunctionmethod,themeanvaluesofqueuelengthandmessagewaitingtimeareexplicitlyobtained.Also,wegivethesimulationresults.TheresultsobtainedbyH.Tagai(1985)arerevised.

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简介：Forworkflow-basedservicecompositionapproach,therelationsbetweentheWebserviceQoSandenvironmentsareusuallynotconsidered,sothattheinformationaboutQoSforcompositeserviceselectionisinaccurate.Itmakestheselectedcompositeserviceinefficient,orevenunexecutable.Toaddressthisproblem,anovelservicecompositionapproachbasedonproductionQoSrulesisproposedinthispaper.Generally,itisverydifficulttodirectlyanalyzehowdifferentkindsofenvironmentfactorsinfluencetheWebserviceQoS.Weadopt'black-box'analysismethodofoptimizingcompositeservices,discoveringtheknowledgesuchas'theQoSofoneWebservicewillbehigherinspecificenvironments'.Inourapproach,theexecutioninformationofthecompositeserviceisrecordedintoalogfirst,whichwillbetakenasthebasisofthesubsequentstatisticalanalysisanddatamining.Then,thetimelyQoSvaluesoftheWebservicesareestimatedandtheproductionQoSrulesbeingusedtoqualitativelyexpressthedifferentperformancesoftheWebserviceQoSindifferentenvironmentsaremined.Atlast,weemploytheminedQoSknowledgeoftheWebservicestooptimizethecompositeserviceselection.Extensiveexperimentalresultsshowthatourapproachcanimprovetheperformanceofselectedcompositeservicesonthepremiseofassuringtheselectingcomputationcost.

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简介：On-orbitservicespacecraftorbitproblemhasbeenaddressedfordecades.Theresearchofon-orbitservicespacecraftorbitcanberoughlydividedintoorbitdesignandorbitoptimization.Thepapermainlyfocusesontheorbitdesignproblem.Wesimplysummarizeofthepreviousworks,andpointoutthemaincontentoftheon-orbitservicespacecraftorbitdesign.Weclassifycurrenton-orbitservicespacecraftorbitdesignproblemintoparking-orbitdesign,maneuvering-orbitdesignandservicing-orbitdesign.Then,wegiveadetaildescriptionofthethreespecificorbits,andputforwardourownideasontheexistedachievements.Thepaperwillprovideameaningfulreferencefortheon-orbitservicespacecraftorbitaldesignresearch.

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简介：多重顺序排列成功地在许多研究被使用为在下面--在单个nucleic和蛋白质之中承受结构、功能的关系象整个家庭一样定序。因为顺序数据库的快速的生长，多重顺序排列能经常很大、困难设想并且分析。我们提供试图设想并且分析与不同外部算法获得的多重排列的一种新服务，与为排列序列的比较以及为排列的一幅最后的图象的创造有用的新特征。服务被称为FASMA并且在http://bioinformatica.isa.cnr.it/FASMA/是可得到的。

简介：尽管关于在组织的知识管理(千米；公里)的实现的许多理论被建议了并且学习，没有合并企业过程，大多数应用趋于独自站。知识的不同范畴提供不同好处并且当一种有效千米；公里方式仍然保持战略上重要，并且还仍然是understudied，怎么把千米；公里的各种各样的范畴集成到一条混合途径。因此，在这糊为新服务开发(NSD)和结果的测量集成主要千米；公里应用程序的一个混合模型金融好处被开发了。建议千米；公里模型合并新闻组，知识论坛，知识财产管理和一个混血儿为沿着二轴分享组织上的知识意味着的知识应用程序进程，明确对含蓄、单个对集体。在台湾的最大的管理咨询公司之一，中国，其过程NSD当模特儿，用千米；公里应用程序独自正在站，为案例研究被选择。一套混合千米；公里进程被开发实现建议千米；公里模型，并且它为把混合千米；公里惯例集成到企业进程与更大的金融好处说明一个应用程序。把确认基于增加的知识价值(KVA)，建议千米；公里模型为在一个组织以内分享NSD知识提供一个新操作系统。通过由测量完成的金融结果的案例研究，建议千米；公里模型被发现向一个独占的混合平台提供一个实验进程模型在一个组织以内探讨创新途径和千米；公里的实际的值。

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简介：WebSerivce对于开发者来说已经不再是一个陌生概念了，WebService允许应用程序通过Internet进行通讯和数据交换。随着微软NET战略的推行，选种可编程的、通过SOAP协议、基于XML的网络协议已经赢得了开发者的心。

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简介：Thedynamicsofclassicalroboticsystemsareusuallydescribedbyordinarydifferentialequationsviaselectingaminimumsetofindependentgeneralizedcoordinates.However,differentparameterizationsandtheuseofanonminimumsetof(dependent)generalizedcoordinatescanbeadvantageousinsuchcaseswhenthemodeleddevicecontainsclosedkinematicloopsand/orithasacomplexstructure.Ononehand,theuseofdependentcoordinates,likenaturalcoordinates,leadstoadifferentmathematicalrepresentationwheretheequationsofmotionaregivenintheformofdifferentialalgebraicequations.Ontheotherhand,thecontroldesignofunderactuatedrobotsusuallyreliesonpartialfeedbacklinearizationbasedtechniqueswhichareexclusivelydevelopedforsystemsmodeledbyindependentcoordinates.Inthispaper,weproposeadifferentcontrolalgorithmformulatedbyusingdependentcoordinates.Theappliedcomputedtorquecontrollerisrealizedviaintroducingactuatorconstraintsthatcomplementthekinematicconstraintswhichareusedtodescribethedynamicsoftheinvestigatedserviceroboticsysteminrelativelysimpleandcompactform.TheproposedcontrollerisappliedtothecomputedtorquecontroloftheplanarmodeloftheACROBOTERservicerobot.Thestabilityanalysisofthedigitallycontrolledunderactuatedservicerobotisprovidedasarealparametercasestudyforselectingtheoptimalcontrolgains.

简介：Thestudymadeamonetizedvaluationofeco-serviceprovidedbyforestsatSaihanbaMechanicForestFarmintermsofwaterconservancy,soilconversation,carbonsequestration,micro-climateadjustment,airqualityimprovement,protectionforagriculture,biodiversitymaintenance,andlandscape&recreation.Theresultsrevealedthatthetotalvalueofvariouseco-servicesis3.061billionyuan/a,whiletheeco-servicesofunitareaforestvaluesat42300yuan/(ha·a).