简介：AtFermilab'sCDFfarmamodularandhighlyscalablesoftwareandcontrolsystemforprocessing,reprocessing,MonteCarlogenerationandmanyothertaskshasbeencreated.ThesystemiscalledFPS(FarmProcessingSystem).Thissystemconsistsofindependentsoftwarecomponentsandallowsmodificationstosuitothertypesofprocessingaswell.FPSisaccompaniedwithfullyfeaturedmonitoringandcontrolinterfaces,includingwebstatisticsdisplaysandamultiplatformJavacontrolinterfacethatalloweasymanagementandcontrol.Thesystemalsofeaturesautomaticerrorrecoveryprocedureswithearlywarningsthatallowsmoothrunning.Ageneraloverviewofthesoftwaredesingalongwithadescriptionofthefeaturesandlimitationsofthesystemanditscomponentswillbepresented.Run2experiencewiththesystemwillbegiveraswell.

简介：DigitizationfromGEANTtrackingrequiresapredictablesequenceofstepstoproducerawsimulateddetectorreadoutinformation.Wehavedevelopedasoftwareframeworkthatsimplifiesthedevelopmentandintegrationofdigitizersbyseparatingthecoordinationactivities(sequencinganddispatching)fromtheactualdigitizationprocess.Thisseparationallowsthedevelopersofdigitizerstoconcentrateondigitization.Theframeworkprovidesthesequencinginfrastructureandadigitizermodel,whichmeansthatalldigitizersarerequiredtofollowthesamesequencingrulesandprovideaninterfacethatfitsthemodel.

简介：TheCDFexperimentstarteddatatakinginApril2001,Thedataareorganizedintodatasetswhichcontaineventsofsimilarphysicspropertiesandreconstructionversion.theinformationaboutdatasetsisstoredintheDataFileCatalog,arelationaldatabase.Thisinformationispresentedtothedataprocessingframeworkasobjectswhichareretrievedusingcompoundkeys.Theobjectsandthekeysaredesignedtobethealgorithms'viewofinformationstoredinthedatabase.ObjectsmayuseseveralDBtables.Adatabaseinterfacemanagementlayerexistsforthepurposeofmanagingthemappingofpersistentdatatotransientobjectsthatcanbeusedbytheframework.Thislayerexistsbetweenthealgorithmcodeandthecodewhichreadsdirectlyfromdatanbasetables.Attheuserend,itplacesget/putinterfaceonatopofatransientclassforretrievalorstorageofobjectsofthisclassusingakey.DataFileCatalogcodemakesuseofthisfacilityandcontainsallthecodeneededtomanipulateCDFDataFileCatalogfromaC++programorfromthecommandprompt,ItsupportsanOracleinterfaceusingOTL,andamSQLinterface,ThiscodeandtheOravcleimplementationofDataFileCatalogweresubjectedtotestduringCDFCommissioningRunlastfallandduringfirstweeksofRunIIinApril.Itperformedexceptionallywell.

简介：TheColliderDetectoratFermilab(CDF)experimentrecordsandanalysesproton-antiprotioninteractionsatacenter-of-massenergyof2TeV,RunIIoftheFermilabTevatronstartedinAprilofthisyear,Thedurationoftherunisexpectedtobeovertwoyears.OneofthemaindatahandlingstrategiesofCDFforRUnIIistohidealltapeaccessfromtheuserandtofacilitatesharingofdataandthusdiskspace,Adiskinventorymanagerwasdesignedanddevelopedoverthepastyearstokeeptrackofthedataondisk.tocoordinateuseraccesstothedata,andtostagedatabackfromtapetodiskasneeded.TheCDFRunIIdiskinventorymanagerconsistsofaserverprocess,auserandadministratorcommandlineinterfaces.andalibrarywiththeroutinesoftheclientAPI.Dataaremanagedinfilesetswhicharegroupsofoneormorefiles.Thesystemkeepstrackofuseracesstothefilesetsandattemptstokeepfrequentlyaccesseddataondisk.Datathatarenotondiskareautomaticallystagedbackfromtapeasneeded.ForCDFthemainstagingmethodisbasedonthemt-toolspackageastapesarewrittenaccordingtotheANSIstandard.

简介：Inthispaper,wediscusstheCDFRunⅡRunControlandonlineeventmonitoringsystem.RunControlisthetoplevelapplicationthatcontrolsthedataacquisitionactivitiesacross150frontendVMEcratesandrelatedserviceprocesses,RunControlisareal-timemulti-threadedapplicationimplementedinJavawithflexiblestatemachines,usingJDBCdatabaseconnectionstoconfigureclients,andincludingauserfriendlyandpowerfulgraphicaluserinterface.TheCDFonlineeventmonitoringsystemconsistsofseveralparts;theeentmonitoringprograms,thedisplaytobrowsetheirresults,theserverprogramwhichcommunicateswiththedisplayviasocketconnections,theerrorreceiverwhichdisplayserrormessagesandcommunicateswithrunControl,andthestatemanagerwhichmonitorsthestateofthemonitorprograms.

简介：Run2atFermilabbeganinMarch,2001,CDFwillcollectdataatamaximumrateof20MByte/secduringtherun.Theofflinereconstructionofthisdatamustkeepupwiththedatatakingrate.ThisreconstructionoccursonalargePCfarm,whichmusthavethecapacityforquasi-realtimedatareconstruction,forreprocessingofsomedataandforgenerationandprocessingofMonteCarlosamples.Inthispaerwewillgivethedesignrequirementsofrthefarm,describethehardwareandsoftwaredesignusedtomeetthoserequirements,describetheearlyexperienceswithRun2dataprocessing,anddiscussfutureprospectsforthefarm,includingsomeideasaboutRun2bprocessing.

简介：TheCDFexperimentattheFermilabTevatronhasbeensignificantlyupgradedforthecolliderRunⅡ,whichstartedinmarch2001andisscheduledtoalstuntil2006,Instantaneousluminositiesof10^32cm^-2S^-1andaboveareexpected.Adataacquisitionsystemcapableofefficientlyrecordingthedatahasbeenoneofthemostcriticalelementsoftheupgrade.Keyfiguresaretheabilititytodealwiththeshortbunchspacingof132ns.eventsizesoftheorderof250kB,andpermanentloggingof20MB/s,Thedesignofthesystemandexperiencefromthefirstmonthsofdata-takingoperationarediscussed.

简介：TheColliderDetectoratFermilab(CDF)collaborationrecordsandanalysesprotonanti-protoninteractionswithacenter-of-massenergyof2TeVattheTevatron,Anewcolliderrun,RunII,oftheTevatronstartedinApril.DuringitsmorethantwoyeardurationtheCDFexperimentexpectstorecordabout1PetaByteofdata.Withitsmulti-purposedetectorandcenter-ofmassenergyatthefrontier,theexperimentalprogramislargeandversatile.Theover500scientistsofCDFwillengageinsearchesfornewparticles,liketheHiggsbosonorsupersymmetricparticles,precisionmeasurementofelectroweakparameters,likethemassoftheWboson,measurementoftopquarkparametersandalargespectrumofBphysics.Theexperimenthastakendataandanalysedtheminpreviousruns.ForRunII,however,thecomputingmodelwaschangedtoincorporatenewmethodologies.thefileformatswitched.andbothdatahandlingandanalysissystemredesignedtocopewiththeincreaseddemands.Thispaper(4-036atChep2001)givesanoverviewoftheCDFRunIIcomputesystemwithemphasizeonareaswherethecurrentsystemdoesnotmatchinitialestimatesandprojections.Forthedatahandlingandanalysissystemamoredetaileddescriptionisgiven.

简介：摘要对数正太分布的随机变量的和在无线通信中广泛发生，而又很难精确计算参数，所以CDF存在许多近似，这些近似是基于将对数正太分布的随机变量和近似为另一个对数正太分布随机变量。一种基于正太对数正太概率纸的拟合的计算对数正太分布和的近似的新范式在下面的内容中将被介绍。

简介：TheCDFcollaborationattheFermilabTevatronanalysesproton-antiprotoninteractionsatacenter-of=massenergyof2TeV.duringthethecolliderrunstartingthisyeartheexperimentexpectstorecord1Petabyteofdataandassociateddatasamples,TheDataHandling(DH)systemhasonlineandofflinecomponents.TheDHofflinecomponentprovidesaccesstothestoreddata,tostoredreconstructionoutput,tostoredMonte-Carlodatasamples,anduserowneddatasamples.Itservesmorethan450physicistsofthecollaboration.TheextrarequirementstotheofflinecomponentoftheDataHandlingsystemaresimplicityandconvenienceforusers.Morethan50millioneventsoftheCDFRunIIdatahavebeenalreadyprocessedusingthissystem.

简介：压缩(ZRT/IRT-like蛋白质)和CDF(阳离子散开Facilitator)是主要搬运锌进并且从cytosol的二个大金属transporter家庭。几快速做，CDF运输ers在哺乳动物和各种各样的模型有机体被描绘了，并且许多候选人基因被染色体工程识别了，例如酵母，线虫，水果苍蝇，和斑马鱼。压缩和CDF运输ers的意外功能最近在一些模型有机体被报导了，导致在我们哺乳动物的对应物的功能的理解的主要进展。这里，我们在从代表性的模型有机体获得的真核细胞的压缩和CDF运输ers之中在顺序类似和功能的关系上考察最近的信息。

简介：ThecharacteristicsofsuspendedsedimentimagecanbereflectedbythecoefficientsofbiorthogonalwavelettransformofCDF(2,2).Basedonthepowerdistributionindifferentscales,anadaptivealgorithmisproposedinthispaper,wherebythecoefficientsareadjustednon-linearly.Theparticleinformationcanbewellretainedwhiletheuselessbackgroundisremoved.Inthisway,satisfactorybinaryimagecanbeobtainedforfurtheranalysisofthesedimentparticle.

简介：利用提升格式，构造了CDF型的双正交小波，并探讨了提升算子S的选择规律，最后给出构造实例，结果表明：这种构造方法比传统的构造方法简单、易行，而且选择不同的提升算子S，可以得到不同性质的双正交小波，充分显示出这种构造方法的实用性和广泛性。

简介：剑川县象图社区综合发展项目,在象图CDF的建立和发展过程中,在象图乡又启动了第二期社区综合发展项目

简介：象图的农民通过参加CDF,资金从CDF流动农民的手中后,建议政府在发展CDF过程中发挥主要的推动作用

简介：摘要利用CDF（计算流体力学）技术对大连中心?裕景及周边地区的风环境模拟分析。CDF技术提供了简便、经济、直观的模拟分析结果。大连中心?裕景作为大连城市中心区的新秀地标，势必对周边既有建筑风环境产生影响。通过分析模拟结果分析风环境发生狭管风和风影区等在该区域的分布特征以及可能产生的影响。