欢迎来到天天文库
浏览记录
ID:34542072
大小:294.01 KB
页数:31页
时间:2019-03-07
《英文版产业经济学教程垄断》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Chapter3MonopolyECNUOrientalRealEstateCollege3.1Marketstructure:classification,characteristicandmeasure3.1.1DeterminantsMarketconcentrationratioProductdifferentiationBarrierstoentryandexitPriceelasticityShort-termcoststructure1、Marketconcentrationratio:firmi’soutput,sale,assetsamount,employeenum
2、ber,etc.Herfindahl-HirschmanindexXsizeoftheindustryXifirmi’ssizeSimarketshareoffirminnumberoffirms2、ProductdifferentiationCrosspriceelasticityAdvertisingdensity=AD/SLAD=sumofadvertisingSL=productsale植草益(1997,31industries)AD/SL≥3.5%orAD≥2billionyenveryhighproductdifferentiation1%≤AD/SL<3.5%or1bil
3、lionyen≤AD<2billionyenhighproductdifferentiationAD/SL<1%orAD<1billionyenmediumproductdifferentiation3、BarrierstoentryandexitBarrierstoentryBarrierstoentryistheadvantagesharedbycurrentfirmsthatmeansincumbentscankeeppricehigherthancompetitivelevelwithoutentryofnewfirms.(Bain)Barrierstoentrybedefin
4、edasakindsofadditionalcostburdenedbyentrantwhileincumbentisneedless.(Stigler)componentsabsolutecostadvantagescaleeconomicscapitalbarriertechnologicalbarrierlawbarrierstrategicbarrierBarrierstoexitAssetsspecialityandsunkcostSeverancepayLawrestrictionClassificationofmarketstructure:1、RobinsonJ.(19
5、33)CoreassumptionsofPerfectcompetitionVerylowindustryconcentration/atomicityProducthomogeneityPerfectinformationFreeentryEqualaccess(anyfirmcangetallproducingtechnology)agriculturegoodsmarketsormaturefuturesmarkets.eg.PerfectMonopolyIndustryconcentration100%,onlyonecorporationsupplyingproductNor
6、eplaceableproductVeryhighbarrierstoentryworkablecompetitionOligopolyHighindustryconcentrationProductsnearlyhomogenousorcomparativelyhighdifferentiationComparativelyhighbarrierstoentryandexitMonopolisticCompetitionComparativelylowerindustryconcentrationHighproductsdifferentiationComparativelylowe
7、rbarrierstoentryandexit2、Bain’sclassificationconcentrationratioMarketstructureC4value(%)C8value(%)OligopolyⅠ85≤C4─OligopolyⅡ75<C4≤85or85≤C8OligopolyⅢ50≤C4<7575≤C8<85OligopolyⅣ35≤C4<5045≤C8<75OligopolyⅤ30≤C4<3540≤C8<45competi
此文档下载收益归作者所有