简介:Takingintoconsiderationthecharacteristicsofnowadayssociety,thispaperhasadvancedthesystemicthinkingonthebuildingofEnterprises'"ThreeCycle"IntegrationStructure.Afterpointingout,theprinciplesofoptimizationbetweentheoreticstructureandexecutivestructure,thispaperhasbroughtforwardtheEnterprises'"ThreeCycle"IntegrationStructureanditsinherentrelationshipamongeachcycle.
简介:RationalizationofIndustrialStructureisessentialcharacteristicofeconomicdevelopmentandkeytopromotesustained,stable,coordinatedeconomicdevelopmentaswell.BasedonGreyRelevancyDegree,thepaperistoanalyzeindustrystructureinWenzhou,China.Andgivetheevaluationforrationalizationofindustrialstructure.
简介:LetFbeafieldofcharacteristiczero.Wn=F[t(+1/2),t(+1/2),...,t(+1/n)]δ/δt1+...+F[t(+1/2),t(+1/2),...,t(+1/n)]δ/δtnistheWittalgebraoverF,Wn+=F[t1,t2...,tn]δ/δt+...+F[t1,t2...,tn]δ/δtnisLieshbalgebraofWn.ItiswellknownbothWnandWn+aresimpleinfinitedimensionalLiealgebra.InZhao'spaper,itwasconjecturedthatEnd(Wn^+)-{0}=Aut(Wn^+)anditwasprovedthatthevalidityofthisconjectureimpliesthevalidityofthewell-knownJacobianconjecture.Inthisshortnote,wechecktheconjectureaboveforn=1.WeshowEnd(W1^+)-{0}=Aut(W1^+).
简介:Amulti-agentmodelispresentedtodiscussthemarketdynamicsandthesizedistributionoffirms.Themodelemphasizestheeffectsofincreasingreturnstoscaleandgivesthedescriptionofthebornanddeathofadaptiveproducers.Theevolutionofmarketstructureanditsbehaviorunderthetechnologicalshocksareinvestigated.Itsdynamicalresultsareingoodagreementwithsomeempirical"stylizedfacts"ofindustrialevolution.Withthediversityofdemandandadaptivegrowthstrategiesoffirms,thefirmsizeinthegeneralizedmodelobeysthepower-lawdistribution.Threefactorsmainlydeterminethecompetitivedynamicsandtheskewedsizedistributionsoffirms:1.Self-reinforcingmechanism;2.Adaptivefirmgrowingstrategies;3.Demanddiversityorwidespreadheterogeneityinthetechnologicalcapabilitiesoffirms.
简介:SIGN-REVERSALPROPERTYFORF-MATRICESANDN-MATRICESXUSong(GraduateSchool,ChinaAcademyofRailwaySciences,Beijing100081,China)Abstra...
简介:Chainreactionbankruptcyisregardedascommonphenomenonanditseffectistobetakenintoaccountwhencreditriskportfolioisanalyzed.Butconsiderationandmodelingofitseffectleavemuchroomforimprovement.Thatismainlybecausemethodforgraspingrelationsamongcompanieswithlimiteddataisunderdeveloped.Inthisarticle,chancediscoverymethodisappliedtoestimateindustrialrelationsthataretoincludecompanies'relationsthattransmitchainreactionofbankruptcy.TimeordermethodanddirectedKeyGrapharenewlyintroducedtodistinguishandexpressthetimeorderamongdefaultsthatisessentialinformationfortheanalysisofchainreactionbankruptcy.ThestepsforthedataanalysisareintroducedandresultofexampleanalysiswithdefaultdatainKyushu,Japan,2005ispresented.Thestructureestimatedbythenewmethodiscomparedwiththestructureofactualaccountreceivableholdersofbankruptedcompaniesforevaluation.