简介:一张面向的分成三部分的图是把一个方向分到一张简单的分成三部分的图的每个边的结果。为在面向的分成三部分的图D的任何顶点x(U,V,W),让的dx+和dx?x分别地表示outdegree和indegree。定义$a_{u_i}=d_{u_i}^+-d_{u_i}^-,b_{v_j}=d_{v_j}^+-d_{v_j}^-$a_{u_i}=d_{u_i}^+-d_{u_i}^-,b_{v_j}=d_{v_j}^+-d_{v_j}^-并且$c_{w_k}=d_{w_k}^+-d_{w_k}^-$c_{w_k}=d_{w_k}^+-d_{w_k}^-作为在U,在V的vj和在W的wk的顶点ui的不平衡分别地。在这份报纸,我们获得标准让整数的序列是某面向的分成三部分的图的不平衡。
简介:TheCMSOOreconstructionprogram-ORCA-hasbeenusedsince1999toproducelargesamplesofreconstructedMonte-Carloeventsfordetectoroptimization,triggerandphysicsstudies,TheeventsarestoredinseveralObjectivityfederationsatCERN,intheUS,Italyandothercountries.ToperformtheirstudiesphysicistsusedifferenteventsamplesrangingfromcompletedatasetsofTBytesizetoonlyafeweventsoutofthesedatasets.WedescribetheimplementationoftheserequirementsintheORCAsoftwareandthewaycollctionsofeventsareaccessedforreading,writingorcopying.
简介:TheBaBerexperimentstoresitsdatainanObjectorientedfederateddatabasesuppliedbyObjectivity/DB(tm),thisdatabaseissurrently350TBinsizeandisexpectedtoincreaseconsiderablyastheexperimentmatures.Managementofthisdatabaserequirescarefulplanningandspecializedtoolsinordertomakethedataavailabletophysicistsinanefficientandtimelymanner,WediscusstheoperationalissuesandmanagementtoolsthatweredevelopedduringthepreviousruntodealwiththisvastquantityofdataatSLAC.
简介:ThereconstructionandsubsequentparticleidentificationisachallengeinacomplexandahighluminosityenvironmentsuchasthoseexpectedintheATLASdetectorattheLHC.TheATLASsoftwarehaschosentheobjectorientedparadigmandhasrecentlymigratedmuchofitssoftwarecomponentsdevelopedearlierusingproceduralprogramminglanguages.Thenewsoftware,whichemphasizesontheseparationbetweenalgorthmsanddataobjects,hasbeensuccessfullyintegratedinthebroaderATLASframework.Wewillpresentastatusreportofthereconstructionsoftwaresummarizingtheexperiencesgainedinthemigrationofseveralsoftwarecomponents.Wewillexaminesomeofthecomponentsofthecalorimetersoftwaredesign,whichincludesimulationofreal-timedetectoreffectsandonlineenvironment,andstrategiesdeployedforidentificationofparticles.
简介:InthisupdatereportaboutanObjectOriented(OO)trackreconstructionmodel,whichwaspresentedatCHEP'97,CHEP'98,andCHEP'2000,weshalldescribesubsequentnewdevelopmentssincethebeginningofyear2000.TheOOmodelfortheKalmanfilteringmethodhasbeendesignedforhighenergyphysicsexperimentsathighluminosityhadroncolliders.IthasbeencodedintheC++programminglanguageoriginallyfortheCMSexperimentatthefutureLargeHadronCollider(LHC)atCERN,andlaterhasbeensuccessfullyimplementedintothreedifferentOOcomputingenvironments(includingthelevel-2triggerandofflinesoftwaresystems)oftheATLAS(anothermajorexperimentatLHC).Forthelevel-2triggersoftwareenvironment.weshallselectivelypresentsomelatestperformanceresults(e.g.theB-physicseventselectionforATLASlevel-2trigger,therobustnessstudyresult,ets.).Fortheofflineenvironment,weshallpresentanew3-Dspacepointpackagewhichprovidestheessentialofflineinput.AmajordevelopmentafterCHEP'2000istheimplementationoftheOOmodelintothenewOOsoftwareframeworkAthena"ofATLASexperiment.ThenewmodularizationofthisOOpackageenablesthemodeltobemoreflexibleandtobemoreeasilyimplementedintodifferentsoftwareenvironments.Alsoitprovidesthepotentialtohandlethemorecomlpicatedrealisticsituation(e.g.toincludethecalibrationcorrectionandthealignmentcorrection,etc.)Somegeneralinterfaceissues(e.g.designofthecommontrackclass)ofthealgorithmstodifferentframeworkenvironmentshavebeeninvestigatedbyusingthisOOpackage.
简介:Fromthecomparisonofcorrelationtensorinthetheoryofquantumnetwork,theAlexanderrelationmatrixinthetheoryofknotcrystalsandtheidenticalinversionrelationsundertheactionofPaulimatrices,weshowthatthereisaonetoonecorrespondencebetweenfourBellbasesandfourorientedlinksofthelinkage41inknottheory.
简介:Thestraininducedcrystallizationbehaviourinpolyimidefrom1,4-bis(3’,4’-dicarboxyphenoxy)benzeneand4,4’-oxydianiline(PEI-E)hasbeeninvestigatedbyWAXD,DSCandFTIR.TheresultsobtainedshowthatcrystallizationinPEI-Edidtakeplacejustaftertensileyielding.Meanwhile,theeffectofstraininducedcrystallizationonthethermomechanicalpropertieswasstudiedbyDMAandTMA,theresultsofwhichindicatethatthecrystallizationandhotstretchinghaveacertaininfluenceonthedynamicmechanicalproperties,suchasweakeningtheβrelaxationanddecreasingtheglasstransitiontemperature.TheTMAresultsconfirmtheshiftingofglasstransitiontemperaturetolowertemperatureregionafterhotstretching.ThisphenomenoncouldbewellexplainedbytheeffectofresidualstressaccordingtoEyring’stheory.
简介:Layered-cobalthydroxidesCo(OH)1.65Cl0.35·0.5H2O(1),Co(OH)1.75(NO3)0.25·0.1H2O(2)withuniquemacro-andmicroscalemorphologieshavebeensynthesisedbyalowtemperature,ammonia-controlledvapour-diffusionmethod.ThematerialshavethinfilmmorphologiesandwerecharacterizedbyX-raypowderdiffraction(XRD)andfieldemissionscanningelectronmicroscopy(FESEM).
简介:Bariumferrite(BaM)thinfilmsaredepositedonplatinumcoatedsiliconwafersbypulsedlaserdeposition(PLD).Theeffectsofdepositionsubstratetemperatureonthemicrostructure,magneticandmicrowavepropertiesofBaMthinfilmsareinvestigatedindetail.Itisfoundthatmicrostructure,magneticandmicrowavepropertiesofBaMthinfilmareverysensitivetodepositionsubstratetemperature,andexcellentBaMthinfilmisobtainedwhendepositiontemperatureis910℃andoxygenpressureis300mTorr(1Torr=1.3332×102Pa).X-raydiffractionpatternsandatomicforcemicroscopyimagesshowthatthebestthinfilmhasperpendicularorientationandhexagonalmorphology,andthecrystallographicalignmentdegreecanbecalculatedtobe0.94.Hysteresisloopsrevealthatthesquarenessratio(Mr/Ms)isashighas0.93,thesaturatedmagnetizationis4004Gs(1Gs=104T),andtheanisotropyfieldis16.5kOe(1Oe=79.5775A·m-1).Ferromagneticresonancemeasurementsrevealthatthegyromagneticratiois2.8GHz/kOe,andtheferromagneticresonancelinewithis108Oeat50GHz,whichmeansthatthisthinfilmhaslowmicrowaveloss.ThesepropertiesmaketheBaMthinfilmshavepotentialapplicationsinmicrowavedevices.
简介:Inthepaper,thenonlinearmagnetoelasticpropertiesofcompositionTb0.27Dy0.73Fe1.95<110>orientedpolycrystallinealloysareinvestigatedundercoupledloadsofhighmagneticfieldandcompressivestress.Themagnetizationandmagnetostrictionaremeasuredsimultaneouslyunderappliedmagneticfieldfrom800to800kA/mandcompressivestressfrom0to25MPaatroomtemperature.Thestraincoefcientandrelativepermeabilityareobtainedbydiferentialcalculationfromtheexperimentalcurves.Theresultsshowthatthevaluesofsaturationmagnetization(Ms)underdiferentcompressivestressesremaininvariablyconstantintheregionofthehighmagneticfield.Thesaturationmagnetostriction(λs)increaseswithincreasingcompressivestressandreaches1680×106under25MPa.Accordingtotheincreaseofthecompressivestress,thehystereticloopareaofmagnetizationandmagnetostrictionincreases,whilethemaximumrelativepermeabilityandstraincoefcientdecrease.Additionally,theinfluenceofthebiasmagneticfieldonthemechanicalpropertyistakenintoaccount.Thestress-strainrelationshipisnonlinearandsensitivetotheappliedexternalmagneticfieldsalongtheaxisofrod.Theresultsobtainedareausefulcomplementtotheexistingexperimentsfortheoreticalapproachesandengineeringapplications.