简介:ThispaperisconcernedwithapplicationsofintegratedsemigroupstothefollowingCauchyproblem:(ACPn)xn(t)=sumfromi=0ton-1Bixi(t),xi(0)=xi,0(?)i(?)n-1whereBi(0(?)i(?)n-1)areclosedlinearoperatorsonaBanachspaceX.Auniquenesstheorem,aconditionofthesolvability,aconditionoftheexponentialwell-posedness,andsomeresultsforthespecialcasethatBn-1isboundedandD(Bn-2)(?)D(Bi)(0(?)i(?)n-3)areobtained.
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简介:Usingagentdevelopmenttoolstoconstructanagent-basedsystemisawellappliedapproach.However,thedevelopmenttoolsusuallydonothavethefunctiontocheckthefeasibilityabouttheworkflowoftheagentsystemduringitimplementationstage.Therefore,todevelopanevaluationapproachtoanalyzethefeasibilityofadevelopingagentsystemsuchthattheimproperworkflowofanagentsystemcanbefoundintheearlydesignstageisanecessarytasktoreducetheriskofimplementation.Inthisresearch,aPetriNet(PN)basedthree-stageevaluationapproachwasdeveloped.Intheconceptualstage,thepitfallofthecurrentagentsystemdevelopingprocesswasexaminedandanimprovementanalysisprocesswasspecified.Then,inthesystemdesignstage,anevaluationapproachwhichextractedtheprocesslogfilefromadevelopingagentsystemintoaPNmodelintermsofaprocessminingapproach-αalgorithmwasproposed.ThismodelwassimulatedinaPNsimulationpackage.TheagentsystemperformancewasevaluatedintermsofanalyzingthedeadlockphenomenaofthePNmodel.Finally,intheimplementationstage,theproposedconceptwasimplementedbyusinganagentdevelopingtoolJADEandaPNsimulationtoolCPN.Anagent-basedroboticassemblysystemwasusedtoexaminethepossibledeadlockoftheagentsystem.
简介:Inthispaper,weprovideanecessaryinfrastructuretodefineanabstractstateexplorationintheHOLtheoremprover.OurinfrastructureisbasedonadeepembeddingoftheMultiwayDecisionGraphs(MDGs)theoryinHOL.MDGsgeneralizeReducedOrderedBinaryDecisionDiagrams(ROBDDs)torepresentandmanipulateasubsetoffirst-orderlogicformulae.TheMDGsembeddingisbasedonthelogicalformulationofanMDGasDirectedFormulae(DF).Then,theMDGsoperationsaredefinedandthecorrectnessproofofeachoperationisprovided.TheMDGreachabilityalgorithmisthendefinedasaconversionthatusesourMDGtheorywithinHOL.Finally,asetofexperimentationsoverbenchmarkcircuitshasbeenconductedtoensuretheapplicabilityandtomeasuretheperformanceofourapproach.
简介:Thefastturnoverofsoftwaretechnologies,inparticularinthedomainofinteractivity(coveringuserinterfaceandvisualisation)makesitdifficultforasmallgroupofpeopletoproducecompleteandpolishedsoftware-toolsbeforetheunderlyingtechnologiesmakethemobsolete.AttheHepVis'99workshop,aworkinggrouphasbeenformedtoimprovetherpoductionofsoftwaretoolsfordataanalysisinHENP.Besidepromotingadistributeddevelopmentorganisation,onegoalofthegroupistosystematicallydesignasetofabstractinterfacesbasedonusingmodernOOanalysisandOOdesigntechniques.Aninitialdomainanalysishascomeupwithseveralcategories(componets)foundintypicaldataanalysistools:historams,Ntuples,Functions,Vectors,Fitter,Plotter,AnalyzerandController,SpecialEmphasiswasputonreducingthecouplingsbetweenthecategoriestoaminimum,thusoptimisingre-useandmaintainabilityofanycomponentindividually.TheinterfaceshavebeendefinedinJavaandC++andimplementationsexistintheformoflibrariesandtoolsusingC++(Anaphe/Lizard,Openscientist)andJava(JavaAnalysisStudio),AspecialimplementationaimsataccessingtheJavaLiraries(throughtheirAbstractInterfaces)fromC++.ThispapergiveranoverviewofthearchitectureanddesignofthevariouscomponentsfordataanalysisasdiscussedinAIDA.
简介:Thepresentpaperdealswiththemethodfortheradarcross-section(RCS)computationsofarbitrarilycomplicatedtargetsbasedontheworkbyD.Klementetal.(1988).Thismethodisconvenientinuse,fastinoperationandpreciseincalculatingRCSofacomplicatedtarget.Withthismethod,theRCSofclassicscatterers,forexample,aconeandacylinder,arecomputedwiththeresultofgoodagreementwithexperimentaldata.Furthermore,theRCS’ofanaircraftmodelatvariousattitudesarecalculatedwiththeresultofgoodagreementwithexperimentaldataalso.
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简介:TopromotetheapplicationofMgalloytomotorcyclewheeltoreduceweight,thefatigueanalysesofwheelsmadeofA356,AM60BandredesignedAM60Bunderthesameserviceconditionwerecarriedout,revealingthatthepeakstressisreducedby25.6%andstressdistributionbecomesmoreuniforminMg-alloywheelduetoitslowerelasticmodulusincomparisonwithAlalloys.TheservicestresslevelofredesignedMgwheelisrelaxedfurtherbecauseofitsoptimizedstructurebyalteringthespokeconfigurationandincreasingthefilletbetweenspokeandring,satisfyingthedesiredreliabilitywith30%weightsaving.
简介:Thispaperpresentstheresultsofourinvestigationsofbreakdownmechanisms,aswellasadescriptionoftheirinfluenceonthedistributionsoftimedelaydistributions,foragastubefilledwithnitrogenat4mbar.Thevaluesofthetimedelayaremeasuredfordifferentvoltages,andthevaluesoftherelaxationtimesandtheirdistributionsandprobabilityplotsareanalyzed.TheobtaineddensitydistributionshaveGaussiandistributionsandexponentialdistributionsfordifferentvaluesofrelaxationtimes(Gaussianforsmallvaluesandexponentialforlargevaluesofrelaxationtime).ItisshownthatformiddlevaluesofrelaxationtimethedelaydistributionshaveashapebetweenGaussianandexponentialdistributions,whichisaresultofthedifferentinfluencesofelectricalbreakdown.