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11985A.M.Spence,1988(1985)1,20011762199736220012001M.E.Poter3(B.Wernerfelt)(D.Collis)(C.A.Montgmery)(G.Harmel)(C.K.Prahalad)2003456WEFIMD19802001200127220018EVA/9////////////10/-////+//-////////11,20412:;;,13114///2====3=/=21=1511===4==+===-5=S1+S2+S3++SnRSiii=123nn16RR=++===++===Q1+Q2+Q3+QiQi11111internet197419531=100100617====7R&D======R&D===18=intranet101010Extranet,108===9=150+150-219=1+2+3+4+5+7+9+11/=[5a1+b1+c1+3(a2+b2+c2)+1(a3+b3+c3)]÷3NNa1,b1,c1a2,b2,c2a3,b3,c3=1+2+3+4+5+7+9+11100=5+3+1100===1020==353153153153153153153153153111=/=12EVA21EVA=-====AAABBABBC97531=-=13==5022=14=Ki?PpiPsKiPpiPsPpi=01===10////+/23A.M.SpenceandHeatherA.Hazard,edit(1988),InternationalCompetiviveness,BallingPublishingCompany,U.S.President’CommissiononIndustrialCompetitiveness,GlobalCompetition:theNew’sRealityWashingtonD.C.,U.S.,GovernmentPrintingOffice,1985,p.26.