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简介：<正>Coca-Cola,Gillette,Nike,Unilever,Bayer,Dell,DuPont,Compaq.IBM,Kodak,L’Oreal,Reebok,Siemens,LouisVuitton,Volkswagen,Toshiba……Havealookatthelistofmultinationals.Theyareallrealbarons—theirnamesareknowntoalmosteveryoneandtheirproductsdominateourconsumption.Intotal,theirinvestvolumeinChinahassurpassedUS$13billion.Someofthem,forexampleProcter&

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简介：1.IntroductionThisarticlepresentsindetailthehistory,evolutionandreorganizationoftheBigFouralongwithpresentingthefutureofthefirms.Asweallknow,theBigFouristhenamegiventothetopfourprofessionalconsultancyfirmsoftheworldnamelyPwC(PriceWaterhouseCoopers),KPMG,ErnstandYoungandDeloitte.Thesefirmsprovideaudit,accounting,taxation,financialandotherprofessionalconsultancytotheclients(beingbusinessesandcompanies).ThediscussionsbelowisthehistoryofthesefirmsincludingthereasonofformationoftheBigFourandtheirjourneytowardsbeingbigfour.2.TheHistoryoftheBigFour–TheBigEightThisnamewasgiventotheeighttopmostauditandaccountingfirmsoftheworldinthebeginningofthetwentiethcentury.BeforetheirevolutionastheBigFour,theBigEightcomprisedofthefollowingaccountingandauditingfirms

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简介：Firms’transformationfrompassiveenvrionmentalmanagementtoactiveenvironmentalmanagementisthekeytosolvingenvironmentalproblems.Thispaperempiricallystudiestheimpactofenvironmentalmanagementincen-tivesonenvironmentalmanagementthroughmodelconstruction.BasedonthedataandrealityofChina,wecanbuildaconceptmodelofenvironmentalmanagementdrivingmechanism,andputforwardtheoreticalhypothesisthatcanbetested:takethe13environmentalmanagementbehaviors(EMBs)assubstituteofthecomprehensiveness,introducecountingvariables,anduseNBmodel,PossionModelandOrderedProbitmodeltheregressionanalysis.ThetheoryandmethodsbroughtforwardinthispaperwillprovidereferencesforfirmsinChinatofurtherimplementvoluntaryenvironmentalmanagement,andofferadvisesandcountermeasuresforleaderstoimplementenvironmentalmanage-menteffectively.

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简介：Venturecapitalfinancingdecisionsareusuallymadebasedonthevaluationoftheventure-backedfirms,forwhichacompoundrealoptionsvaluationmodelwithtwostochasticparametersisbuiltinthispaper.Anumericalexampleisthenusedtoillustratethatthemodelgivesamoreaccurateandreliableresultthanthetraditionaldiscountcashflowvaluationmodel.

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简介：Amulti-agentmodelispresentedtodiscussthemarketdynamicsandthesizedistributionoffirms.Themodelemphasizestheeffectsofincreasingreturnstoscaleandgivesthedescriptionofthebornanddeathofadaptiveproducers.Theevolutionofmarketstructureanditsbehaviorunderthetechnologicalshocksareinvestigated.Itsdynamicalresultsareingoodagreementwithsomeempirical"stylizedfacts"ofindustrialevolution.Withthediversityofdemandandadaptivegrowthstrategiesoffirms,thefirmsizeinthegeneralizedmodelobeysthepower-lawdistribution.Threefactorsmainlydeterminethecompetitivedynamicsandtheskewedsizedistributionsoffirms:1.Self-reinforcingmechanism;2.Adaptivefirmgrowingstrategies;3.Demanddiversityorwidespreadheterogeneityinthetechnologicalcapabilitiesoffirms.

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