欢迎来到天天文库
浏览记录
ID:21765360
大小:294.00 KB
页数:31页
时间:2018-10-20
《英文版产业经济学教程第3章垄断(2)》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,asse
2、tsamount,employeenumber,etc.Herfindahl-HirschmanindexXsizeoftheindustryXifirmi’ssizeSimarketshareoffirminnumberoffirms2、ProductdifferentiationCrosspriceelasticityAdvertisingdensity=AD/SLAD=sumofadvertisingSL=productsale植草益(1997,31industries)AD/SL≥3.5%orAD≥2billionyenveryhighp
3、roductdifferentiation1%≤AD/SL<3.5%or1billionyen≤AD<2billionyenhighproductdifferentiationAD/SL<1%orAD<1billionyenmediumproductdifferentiation3、BarrierstoentryandexitBarrierstoentryBarrierstoentryistheadvantagesharedbycurrentfirmsthatmeansincumbentscankeeppricehigherthancompeti
4、tivelevelwithoutentryofnewfirms.(Bain)Barrierstoentrybedefinedasakindsofadditionalcostburdenedbyentrantwhileincumbentisneedless.(Stigler)componentsabsolutecostadvantagescaleeconomicscapitalbarriertechnologicalbarrierlawbarrierstrategicbarrierBarrierstoexitAssetsspecialityands
5、unkcostSeverancepayLawrestrictionClassificationofmarketstructure:1、RobinsonJ.(1933)CoreassumptionsofPerfectcompetitionVerylowindustryconcentration/atomicityProducthomogeneityPerfectinformationFreeentryEqualaccess(anyfirmcangetallproducingtechnology)agriculturegoodsmarketsorma
6、turefuturesmarkets.eg.PerfectMonopolyIndustryconcentration100%,onlyonecorporationsupplyingproductNoreplaceableproductVeryhighbarrierstoentryworkablecompetitionOligopolyHighindustryconcentrationProductsnearlyhomogenousorcomparativelyhighdifferentiationComparativelyhighbarriers
7、toentryandexitMonopolisticCompetitionComparativelylowerindustryconcentrationHighproductsdifferentiationComparativelylowerbarrierstoentryandexit2、Bain’sclassificationconcentrationratioMarketstructureC4value(%)C8value(%)OligopolyⅠ85≤C4─OligopolyⅡ75<C4≤85or85≤C8OligopolyⅢ50≤C4<7
8、575≤C8<85OligopolyⅣ35≤C4<5045≤C8<75OligopolyⅤ30≤C4<3540≤C8<45competi
此文档下载收益归作者所有