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1、ASupplyChainNetworkEconomy:ModelingandQualitativeAnalysisDingZhangandJuneDongSchoolofBusinessStateUniversityofNewYorkatOswegoOswego,NewYork13126andAnnaNagurneyDepartmentofFinanceandOperationsManagementIsenbergSchoolofManagementUniversityofMassachusettsAmherst,Massachusetts01003ToappearinInn
2、ovationsinFinancialandEconomicNetworksAnnaNagurney,editor,EdwardElgarPublishers(2003)Abstract:Thispaperpresentsanewframeworkforsupplychainnetworks,usinggraphtheory,optimizationtheory,andvariationalinequalitytheory.Itdevelopsageneralnetworkmodelofasupplychaineconomytostudysupplychainversussu
3、pplychaincompetition.Theproposedfraneworkcon-sidersthetransformationandpricingofthematerialflowsastheypropagatethroughthenetworkfromorigins,associated,forexample,withrawmaterialsuppliers,todestinations-theconsumermarkets.Thenetworkincludesbothoperationandinterfacelinks,withanoperationlinkrep
4、resentingabusinessoperationsuchasmanufacturing,storage,and/ortransportation,whileaninterfacelinkrepresentsabusinesstobusinessbridge.Themodelallowsfortheformulationandanalysisofbothintra-chaincooperationandinter-chaincompetition,andpredictsthewinningsupplychains,whicharethosethatcarrypositiv
5、eflow.Themodelhasthenotablefeaturethatasmanylinks(andanytopologyasneeded)canbeutilizedtodescribethesupplychainstructurestocapturebothcooperationaswellascompetition.Thenetworkmodelisalsoanalyzedintermsofexistenceanduniquenessofsolutions.11.IntroductionThispaperproposesamodelingintitiativethat
6、isnetwork-basedtofor-malizebothintrasupplychaincooperationandintersupplychaincompeti-tion.Inparticular,weproposeageneralnetworkmodelforasupplychaineconomysinceitisnowrecognizedthatwhenitcomestoproduction,dis-tribution,andconsumptiontoday,itisnolongersimplyfirmsthatcompetewithoneanother,but,r
7、ather,itissupplychains,consistingofeconomicdecision-makersandtheirspectrumofactivities.Thesupplychainnetworkeconomicmodelthatwedevelopinthispaperaimstoanswersuchfunda-mentalquestionsas:Howdoeconomicdecision-makersformcoalitionsinacompetitiveenvironment?H
