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：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。

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：X作家做梦都梦见自己成名了。成名有什么好,当然是样样都好。作为一个不成名的作家,X作家简直受尽了窝囊气,甚至可以说是凌辱,他给刊物寄稿,刊物永远冷着面孔拒绝,他给出版社寄稿,出版社倒是不冷漠,他们笑呵呵的,

简介：福特汽车公司已经获得许可使用回弹补偿模拟技术，在有限元分析项目——LS-DYNA软件中使用。这一进步可以大大节约开发冲模所需的时间，平均节约六到十周时间

简介：我的未来我作主写作指导：此题不限文体，但一般情况下，可写成关于成长、励志的记叙文，紧扣“励志”两字来凸显主题。审题时我们可从剖析题目开始：“我的未来我作主”首先应该是叙写与未来有关的事情；其次，叙述内容和我密切关联；第三，要突出我的主观意愿，作主两字则是对这种主观愿景的强调和界定。

简介：我国的第三个南极科考站于2009年元月在南极内陆冰盖最高点建立。下图为“沿东、西经90°附近的南极洲地形剖面图”。据此回答1-2题。