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11 个结果
  • 简介:TheBEPCwillincreaseitsluminositytentimeswithupgradeofboththemachineanddetector,whichistheprojectBEPCII,Theprojectwillbestartedatbeginningchineanddetector,whichistheprojectBEPCII.Theprojectwillbestartedatbeginningof2002andfinishedwithin3-4years.InordertoreachthegoaloftheBEPCII,anumberofnewequipmentwillbeaddedinthesystem,suchasthesuperconductingRFcavities,newmagnetpowersuppliesandbeamfeedbacksystem,andtheBEPCcontrolsystemhastobeupgraded.TheBEPCcontrolsystemwasbuiltin1987andwasupgradedin1994.ItisanOpenVMSandCAMACbased-system,someequipmentiscontrolledbyPCs.WearegoingtoupgradetheexistingsystembyEPICS.SeveralVMEIOCswillbeaddedinthesystemwithfeildbus,PLCsforthenewequipmentcontrol.Andwewillkeeptheexistingsysteminuse,suchasCAMAChardware,PCbasedsub-controlandapplicationprograms,whichwillbemergedintotheEPICSsystem.RecentlythedevelopmentoftheEPICSprototypehasbeenstarted.Regardsomeslowcontrol,commercialSCADAproductcanbechosenasthedevelopmenttool.WehavejustfinishedaprototypewiththeSCADAproductWizcon.Thispaperwilldescribethesystemdesignanddevelopmentissues.

  • 标签: 正负电子对撞机 控制系统 改善提高
  • 简介:UpgradeofGoosyDataAcquisitionSystem¥WangShujin;WangYanyu;XingJianping;GuoTianruiandJiaoDunpangAdataacquisitionsystemnamedGoos...

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  • 简介:OnthebasisoftheactualDSPsystemdevelopment,illustratedisthedesignoftheconnectionbetweenDSPandFlash,compiledaretheintegrityproceduresofFlasherasureandprogramming.Besides,designedistheconnectionbetweenfull-duplexEthernetcontrollerRTL8019ASwiththeexternalmemoryinterfaceofDSP.Furthermore,thestepsofflashonlineprogrammingthroughEthernetaredescribedindetail.Theremoteupgradeandupholdarerealizedbythedesign.

  • 标签: DSP实现 DSP系统 远程升级 设计 调试器 RTL8019AS
  • 简介:CHINA-EuropeinteractionisgatheringpacearoundthetenthanniversaryofthecomprehensivestrategicpartnershipbetweenChinaandtheEU.DutchPrimeMinisterMarkRuttevisitedChinainNovember2013.Aweeklater,ChinesePresidentXiJinpingandPremierLiKeqiangmetwithPresidentoftheEuropeanCouncilHermanVanRompuyandEuropeanCommissionPresidentJoseManuelBarrosoatthe16thmeetingofChineseandEuropeanUnionleaders.Shortlyafter,LiKeqiang

  • 标签: 欧洲 中国 外交关系 全面战略伙伴关系
  • 简介:Theobject-orientedtagdatabaseoftheZEUSexperimentatHERAisbasedonObjectivity/DB.Itisusedtorapidlyselecteventsforphysicsanalysisbasedonintuitivephysicalcriteria.Thetotalnumberofeventscurrentlyinthedatabaseexceeds150millionBasedonthedetectorconfigurationdifferentinformationcanbestoredforeachevent.Anewversionofthedatabasesoftwarewasrecentlyreleasedwhichservesclientsonamultitudeofbatchmachines,workgroupserversanddesktopmachinesrunningIrix,LinuxandSolaris.ThisreplacesanearlierversionwhichwasrestrictedtothreeSGImachinesMultiplecopiesofthedatacanbestoredtransparentlytotheusersforexampleifanewofflinereconstructionofthedataisinprogress.Areportisgivenontheupgradeofthedatabaseanditssuperiorperformancecomparedtotheoldeventselectionmethod.

  • 标签: ZEUS实验 标签数据库 物理学分析
  • 简介:Intheanalysisofhowenvironmentalregulationaffectsthecomparativeadvantageoftrade,existingliteratureignoresindustry’sinherentheterogeneity,whichdrawsremarkablydifferentconclusions.Inviewofthis,thepaperanalyzedthemechanismofenvironmentalregulationontheexportqualityofdifferentindustriesfromtheperspectiveoffactorinputstructureheterogeneity.BasedonthepaneldataofChina’smanufacturingindustry,thepaperusedthesystemgeneralizedmethodofmomentsmethodtoexaminetheheterogeneityinfluenceofenvironmentalregulationonmanufacturingexportquality.Thestudyfoundthat,first,environmentalregulationaffectedtheexportqualityupgradeofthemanufacturingsectorthroughoffseteffectandcompensationeffect,andthedirectionoftheimpactwouldmainlydependontheindustry’sfactorinputstructure.Second,forindustrieswithlargerfixed-assetinvestment(FAI)ratiointhefactorinputstructure,thecurrentenvironmentalregulationpolicywasnotconducivetotheexportqualityupgradingoftheindustries.However,therewasasignificantU-shapeddynamicrelationshipbetweenthem.Asenvironmentalregulationsbecamestricter,whenregulatorystringencywentbeyondtheinflectionpoint,thepolicywouldpromotetheupgradingofexportquality.ButforindustrieswithsmallerproportionofFAI,environmentalregulationexertedafavorableimpactontheexportqualityupgrade,followingaJ-shapedmarginalgrowthcurve.Third,forindustrieswithdifferentfactorinputstructure,theirexportqualityhadbeeneffectivelyupgradedasexpectedbyfactorslikehumancapitalinvestment,independentR&D,technologyintroduction,andforeigndirectinvestment;butraisingpercapitacapitalstockandexpandingenterprisesizedidnotproducesignificantdirectimpactonexportqualityupgrade.Theseconclusionsremainedrobustafterusingdifferentmeasurementmethodsandreplacingwithothervariables.Therefore,thispapersuggeststhatgovernmentsshouldt

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  • 简介:ThetechnicalretrofitprojectofMEKunitatFushunPetro-chemicalCompanyNo.2Plant—thefacilityforremovingliquidfromhydrogen—haspassedacceptancetesting.Thistechnologynotonlycanreducethelossofintermediate

  • 标签: 甲基乙基酮 石油化学品 科学用途