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257 个结果
  • 简介:AsoneofthevictoriousAlliesofWorldWarI,ChinaattendedtheParisPeaceConferencein1919.Toacertainextent,theconferencecanberegardedasthetruebeginningofglobalgovernance.ItwasfollowedbytheestablishmentoftheVersailles-WashingtonSystem,thefirstinternationalpatternwithworldparticipation.Althoughitwasinvolvedin

  • 标签: 第一次世界大战 中国 华盛顿 治理 国际
  • 简介:谁料得到宝马出此一招,竟然推出高载客量的前驱轻型客车。对不起,是我说过头了。这款作品现阶段只是概念作,

  • 标签: 宝马 轻型客车 载客量 前驱
  • 简介:基于实例分别在VisualBasic、VFP、HTML超文本、以及AUTHORWARE中阐述ActiveX控件的使用方法,充分展示其应用的广泛性与功能的强大性。

  • 标签: ACTIVEX控件 MCI AUTHORWARE 对象
  • 简介:Inanactivenetwork,userscaninsertcustomizedactivecodesintoactivenodestoexecute.Thusitneedsmoreresourcesthanthoserequiredbyconventionalnetworks,andtheseresourcesmustbeeffectivelymonitoredandmanaged.ManagementpoliciesinexistingOSsaretoocomplicatedtoapplytosimpleactivepackets.Inthispaper,wepresentnewresourcesmanagementpoliciesthataremainlyadopedtomanageCPU,storageandtransmissionbandwidth.Namely,weuseSPFalgorithmtoscheduleandprocessactivepackets,andimportanintervalqueuemethodtoallocatetransmissionbandwidth,andusefeedbackmechanismtocontrolcongestion.Atthesametime,wedesignsomeexperimentsonprototypesystemswithandwithoutresourcesmanagementpoliciesrespectively.Theexperimentsresultsshowthatmanagementpoliciespresentedbyuscaneffectivelymanageresourcesinactivenodesandcanimprovetheperformanceofactivenetworks.

  • 标签: 资源管理 有源网络 节点 CPU 传输带宽
  • 简介:Thetectonicmovementathumanscalehasnotbeenfullyunderstoodyet,especiallyforactivetectonics,althoughitisthebasistostudynaturalhazardsandenvironmentalvariations.Manynationalandinternationalscientificplansrelatedcloselytoactivetectonicsresearchhavebeenmadeinthepasttenyears.Thispaperbrieflysummarizedthebackgroundoftheundertakingofactivetectonicsresearch,itsadvancesandexistingproblems,andthekeypointsinitsfuturestudiesarealsopointedout.TheemergingofnewtechnologiesliketheEarthObservingSystem,DigitalSeismologyandsoonprovidesunusualopportunitiesfortectonicresearch.Itisemphasized,however,thatcarefulanalysesandbuildingupofnewtheoreticalframearesillthekeyproblemsforstudiesofactivetectonics,especiallyforactivetectonicsinChina'scontinent.

  • 标签: ACTIVE TECTONICS
  • 简介:Insteadofvision,manynocturnalanimalsusealternativesensesfornavigationandobjectdetectionintheirdarkenvi-ronment.Forthispurpose,weaklyelectricmormyridfishemployactiveelectrolocation,duringwhichtheydischargeaspe-cializedelectricorganintheirtailwhichdischargeselectricalpulses.Eachdischargebuildsupanelectricalfieldaroundthefish,whichissensedbycutaneouselectroreceptororgansthataredistributedovermostofthebodysurfaceofthefish.Nearbyobjectsdistortthiselectricalfieldandcausealocalalterationincurrentflowinthoseelectroreceptorsthatareclosesttotheobject.Byconstantlymonitoringresponsesofitselectroreceptororgans,afishcandetect,localize,andidentifyenvironmentalobjects.Inspiredbytheremarkablecapabilitiesofweaklyelectricfishindetectingandrecognizingobjects,wedesignedtechnicalsensorsystemsthatcansolvesimilarproblemsofremoteobjectsensing.Weappliedtheprinciplesofactiveelectrolocationtotechnicalsystemsbybuildingdevicesthatproduceelectricalcurrentpulsesinaconductingmedium(waterorionizedgases)andsimultaneouslysenselocalcurrentdensity.Dependingonthespecifictaskasensorwasdesignedfordevicescould(i)detectanobject,(ii)localizeitinspace,(iii)determineitsdistance,and(iv)measurepropertiessuchasmaterialproperties,thickness,ormaterialfaults.Oursystemsprovedtoberelativelyinsensitivetoenvironmentaldisturbancessuchasheat,pressure,orturbidity.Theyhaveawiderangeofapplicationsincludingmaterialidentification,qualitycontrol,non-contactdistancemeasurements,medicalapplicationsandmanymore.Despitetheirastonishingcapacities,oursensorsstilllagfarbehindwhatelectricfishareabletoachieveduringactiveelectrolocation.Theunderstandingoftheneuralprinciplesgoverningelectricfishsensoryphysi-ologyandthecorrespondingoptimizationofoursensorstosolvecertaintechnicaltasksthereforeremainongoinggoalsofourresearc

  • 标签: 仿生学 弱电鱼 感觉系统 电流
  • 简介:SimulationoftheactiveandquietperiodsofseismicityZHONG-XMNHUANG(黄忠贤)(InstituteofCrustalDynamics,StateSeismologicalBureau,Beiji...

  • 标签: EARTHQUAKE model finite element method SEISMICITY
  • 简介:Inthispaper,theactivelearningmechanismisproposedtobeusedinclassifiersystemstocopewithcomplexproblems:anintelligentagentleavesitsownsignalsintheenvironmentandlatercollectsandemploysthemtoassistitslearningprocess.Principlesandcomponentsofthemechanismareoutlined,followedbytheintroductionofitspreliminaryimplementationinanactualsystem.Anexperimentwittesysteminadynamicproblemisthenintroduced,togetherwithdiscussionsoveritsresults.Thepaperisconcludedbypointingoutsomepossibleimprovementsthatcanbemadetotheproposedframework.

  • 标签: 人工智能 分类符系统 主动学习机制
  • 简介:IntroductionInChina,itisnotuncommonforstudentstobetreatedaspassiverecipientsinclass.Theyaretrainedinthiswayfromprimaryschool.Sobythetimetheyentercollege,notonlyaretheyaccustomedtotheroleofsubmissivestudentfollowingtheleadofadominantteacher,buttheyalsoquitewelcomeit,fortheydon’thavetotakeanyinitiativeinclass,theyjustwaittobefilledwithknowledge.Students’hesitancytoparticipateactivelyinclasscomesnotjustfromstudentsthemselvesbutalsofromsometeachers,whosticktotheforce-feedingmethodbecauseitisaneasywayforthemtoconductaclass.SoIstartedtotryandchangethissituation.IdesignedateachingplaninwhichIuseddifferenttechniquestoprovidethestudentswithlotsofopportunitiestobeactiveparticipantsinclass.Someofthetechniquesusedaredescribedbelow.

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  • 简介:Morethan40%ofnewlydiscovereddrugshavelittleornowatersolubilitywhichpresentsaseriouschallengetothesuccessfuldevelopmentandcommercializationofnewdrugsinthepharmaceuticalindustry.Additionally,morethan90%ofdrugsapprovedsince1995havepoorsolubility,poorpermeability,orboth.Therefore,itmaybenecessarytoincreasethedoseofapoorlysolubledrugtoobtaintherequiredefficacywhichcanleadtomoresideeffectsandhighercosttothepatient.Performanceofdrugscanbeimprovedbydecreasingtheparticlesizeand,atthesametime,increasingspecificsurfacearea,dissolutionrateandthebioavailabilityofthedruginthehumanbody.Theroutesofadministrationaredifferentandlistedas60%fororal,5%forpulmonary,5%forocular,5%fortopicaland25%forinjectable,approximately.Theinjectabledrugsarethemostinterestingonesfornanoization,becausesmallerparticleswillincreaseperformance,andwillbeusefulwhenusingmicroneedles.InatypicalmanufacturingprocessofAPIs(activepharmaceuticalingredients)topdownprocesseslikehighpressurehomogenizationandwetbeadmillingareusedasstandardmethodstodecreasetheparticlesizesdowntoafinenessrangeof10to500nanometers.

  • 标签: APIS top DOWN process MICRONIZATION BIOAVAILABILITY
  • 简介:MerinoActive是澳大利亚羊毛创新公司(AWI)和海天轻纺集团协作开发新推出的毛纺织系列新产品。它以柔软保暖的美利奴(Menno)羊毛作里层,用多功能涤纶做外层,是两者完善结合的精美新产品。美利奴羊毛细度为22μm左右,含量在35%-65%之间。

  • 标签: ACTIVE 毛纺织 产品 羊毛细度 创新公司 澳大利亚
  • 简介:SeismicactivityandactivefaultsinHuailaibasinPEIDEWANG(王培德)YUHONGTIAN(田玉红)CHUNLAILI(李春来)YUNTAICHEN(陈运泰)InstituteofGeophys...

  • 标签: Huailai BASIN SEISMIC activity ACTIVE FAULT