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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：CongestioncontrolforpacketssentonanetworkisimportantforDAQsystemsthatcontainaneventbuilderusingswitchingnetworktechnologies.QualityofService(QoS)isatechniqueforcongestioncontrol.RecentLinuxreleasesprovideQoSinthekerneltomanagenetworktraffic.Wehaveanalyzedthepacket-lossandpacketdistributionfortheeventbuilderprototypeoftheAtlasTDAQsystem.WeusedPC/LinuxwithGigabitEthernetnetworkasthetestbed.TheresultshowedthatQoSusingCBQandTBFeliminatedpacketlossonUDP/IPtransferwhiletheUDP/IPtransferinbesteffortmadelotsofpacketloss.TheresultalsoshowedthattheQoSoverheadwassmall.WeconcludedthatQoSonLinuxperformedefficientlyinTCP/IPandUDP/IPandwillhaveanimportantroleoftheAtlasTDAQsystem.

简介：Multimediastreamingservedthroughpeer-to-peer(P2P)networksisboomingnowadays.However,theend-to-endstreamingqualityisgenerallyunstableduetothevariabilityofthestateofserve-peers.Ontheotherhand,proxycachingisabandwidth-efficientschemeforstreamingovertheInternet,whereasitisasubstantiallyexpensivemethodneedingdedicatedpowerfulproxyservers.Inthispaper,wepresentaP2PcooperativestreamingarchitecturecombinedwiththeadvantagesofbothP2Pnetworksandmultimediaproxycachingtechniquestoimprovethestreamingqualityofparticipatingclients.Inthisframe-work,aclientwillsimultaneouslyretrievecontentsfromtheserverandotherpeersthathaveviewedandcachedthesametitlebefore.Inthemeantime,theclientwillalsoselectivelycachetheaggregatedvideocontentsoastoservestillfutureclients.Theassociateprotocoltofacilitatethemulti-pathstreamingandadistributedutility-basedpartialcachingschemearedetailedlydis-cussed.Wedemonstratetheeffectivenessofthisproposedarchitecturethroughextensivesimulationexperimentsonlarge,Inter-net-liketopologies.

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简介：我们比较二条双性人标准政策，和，为排队的M/G/1有第二种可选的服务的系统，在哪个假期时期的长度也被到达的数字随机在闲散时期期间或由一个定时器控制。在所有顾客用尽一切地在队列被为服务以后，服务者立即度假并且可以操作政策或政策。为二条双性人标准政策，全部的平均成本功能每统一时间被开发寻找至少花费的最佳的静止经营方针。为联合最佳起点值在最佳的费用之上基于明确的形式(p，T)并且(p，N)被获得。

简介：Inordertoimprovethecarsalesservice4Sshopmanagementlevel,improvetheeconomicandsocialbenefitsofenterprises,incentivesareusedtoencouragetheirown4sshops.Inthispaper,throughouttherelatedanalysisofthequarterlyandannualawardsincentiveprograminlarge-scaledomesticautomobileenterprises,entropymethodwithMATLABsoftwareisappliedtoestablishthedimensionalfitfunction.Inthedataprocessing,themultiplelinearregressionfunctionintoLingosoftwareisemployedtogetthebestsolution;andClanguageisusedtorunthescreeningdataprogramthroughtheconsistencytestprograminthesensitivityanderroranalysis.Firstofall,considerthecompanytomaximizeprofitsandmaximizetheamountofcomplaintsinthestoretomaintainalowtarget;intermsofstaff,weshouldconsiderprovidingmoreincentivesforemployees;inthecustomer,theoverallsatisfaction,serviceAttitude,vehiclecleanlinessbasedshouldbeimproved.Andtwoprogramsforthemonthlyprofitandexcessprofitsofprogressiveincentivesshouldalsobeimproved.

简介：WeconsideranMX/G/1queueingsystemwithtwophasesofheterogeneousserviceandBernoullivacationschedulewhichoperateunderalinearretrialpolicy.Inaddition,eachindividualcustomerissubjecttoacontroladmissionpolicyuponthearrival.ThismodelgeneralizesboththeclassicalM/G/1retrialqueuewitharrivalsinbatchesandatwophasebatcharrivalqueuewithasinglevacationunderBernoullivacationschedule.Wewillcarryoutanextensivestationaryanalysisofthesystem,includingexistenceofthestationaryregime,embeddedMarkovchain,steadystatedistributionoftheserverstateandnumberofcustomerintheretrialgroup,stochasticdecompositionandcalculationofthefirstmoment.

简介：BystudyingthespectralpropertiesoftheunderlyingoperatorcorrespondingtotheM/G/1queueingmodelwithoptionalsecondserviceweobtainthatthetime-dependentsolutionofthemodelstronglyconvergestoitssteady-statesolution.Wealsoshowthatthetime-dependentqueueingsizeatthedeparturepointconvergestothecorrespondingsteadystatequeueingsizeatthedeparturepoint.

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简介：InInternetenvironment,trafficflowtoalinkistypicallymodeledbysuperpositionofON/OFFbasedsources.DuringeachON-periodforaparticularsource,packetsarriveaccordingtoaPoissonprocessandpacketsizes(henceservicetimes)canbegenerallydistributed.Inthispaper,weestablishheavytrafficlimittheoremstoprovidesuitableapproximationsforthesystemunderfirst-infirst-out(FIFO)andwork-conservingservicediscipline,whichstatethat,whenthelengthsofbothON-andOFF-periodsarelightlytailed,thesequencesofthescaledqueuelengthandworkloadprocessesconvergeweaklytoshort-rangedependentreflectingGaussianprocesses,andwhenthelengthsofON-and/orOFF-periodsareheavilytailedwithinfinitevariance,thesequencesconvergeweaklytoeitherreflectingfractionalBrownianmotions(FBMs)orcertaintypeoflongrangedependentreflectingGaussianprocessesdependingonthechoiceofscalingasthenumberofsuperposedsourcestendstoinfinity.Moreover,thesequencesexhibitastatespacecollapse-likepropertywhenthenumberofsourcesislargeenough,whichisakindofextensionofthewell-knownLittle’slawforM/M/1queueingsystem.Theorytojustifytheapproximationsisbasedonappropriateheavytrafficconditionswhichessentiallymeanthattheserviceratecloselyapproachesthearrivalratewhenthenumberofinputsourcestendstoinfinity.

简介：摘要现今社会，对于电力企业来说，营销模式与其能否取得长远发展关系重大。目前，创建服务调度的营销服务模式已经逐渐成为发展的主流趋势，与传统的营销模式相比，服务调度的营销服务模式更加注重客户的满意度，这对企业服务质量的提升来说具有重要意义。本文就针对如何创建服务调度的营销服务模式进行了分析和研究。

简介：摘要能源服务是重要的公共服务之一，本文从政府能源管理的角度探讨的综合能源服务，希望能为相关的人员提供一定的参考。

简介：专业服务于教师专业成长与学生学科和综合学习的阅读网站——教育阅读网于2010年9月起全面服务于读者以来,成为教育电子阅读的一支生力军。近日该网站启动长期服务战略。

简介：摘要当前，基于我国社会经济迅猛发展的时代背景下，我国电力企业为了充分的适应时代发展的需求，并在市场竞争中保持稳定的地位，开始将优质服务引入到市场营销工作中，经过一段时间的发展与实践，取得了良好的成效。因此，本文基于电力市场营销策略及优质服务展开详细的探究，以此提出一些见解，以供参考。

简介：摘要当前我国的互联网行业不断地发展，各种互联网技术不断地被研发出来，并且在我国的各行各业都有着一定的应用，改变了我国各行业个的发展模式。在电力行业中通过应用互联网技术，推动电力系统网络化、信息化以及智能化发展水平的提升。提高电力系统的运行效率以及安全性能。本文主要是针对我国的网格化供电服务管理模式构建的必要性进行了介绍，并且分析了网格化供电服务管理的思路以及目标，同时提出了一些网格化供电服务管理模式的构建方法，希望能够保障我国电力行业供电水平的提升。

简介：摘要新一轮电改实施对供电企业的管理水平和服务能力提出了更新更高的要求。为企业不断适应电改形势，有效应对客观挑战做出积极有益的探索。本文从提高供电服务质量入手，细致研究了优质服务评价体系，分析短板、查找不足，达到提升管理水平和服务能力，夯实电网企业管理基础的工作目标。

简介：一.增强会计服务功能是会计信息使用者的迫切需求在社会主义市场经济条件下,由于政府职能的转变,政府与企业的关系发生很大变化,企业已逐渐成为独立经营、自负盈亏的经济实体,多元化的筹资已取代了计划经济体制下国