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简介：Thispaperexaminestheimpactofforeignpenetrationonthepublicfirminamixedoligopolisticmarket.Throughtheestablishmentofamixeddoubleoligopolymarket,thispaperanalyzeshowtheshareofforeigninvestmentaffectstheenvironmentalpolicy,thepollutantemission,andthesocialwelfareundertheconditionofthestatetax.Theresultsshowthat:first,theintroductionofforeigninvestmenthassomecrowding-outeffectsonthesociallevelofoutput.Second,theentryofforeigninvestmentincreasestheprofitofthepublicfirmbyalargemargin,andthemaximumprofitoftheprivatefirmhasbeenreduced.Third,theincreaseofforeigninvestmentinpublicfirmdoesnotnecessarilyimprovetheenvironment.

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简介：RodrigoRatosays“SotheAmericaneconomyneedstheworld,andtheworldneedstheAmericaneconomy”?.Forthat,itispossibletonotethattheshorthistoryofUSpolicyintheMiddleEast,includingthesuccessionofpresidential“doctrines”,fromTrumanthroughtoBushII,confirmedWashington’sappreciationofthestrategicroleoftheEasternMediterraneanandtheoilrichstatesoftheMiddleEastinthebroadercontextofUSpolicygoals.Thisinterestisduetothefactthatthisregion(MiddleEast)hasalargeofoilreservesandhugeeconomicrecourses.Thisregionholdsabout66%oftheworldoilreserves,andthisoilreservewillmaketheregiondominateforalongertimeontheglobaloilmarketandinternationaloil-producingorganizations,suchasOPEC,socontrolonthisregionhasbecomeafocusofattentiontodecision-makersintheworld,andthereisnodoubtthattheUnitedStateswasthemostprominentwhotriedtocontroltheregion.ThepurposeofthecurrentresearchistoshedlightontheUnitedStates’economicpresenceintheMiddleEastregiontounderstandhowUnitedStates’presencehasdevelopedintheregionandwhatmotiveswerebehinditspresence.

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简介：MALTA,apicturesqueislandnationinthesouthofEurope,isdubbedasthe“heartoftheMediterranean.”GeographicallyconnectingEurope,Asia,andAfrica,Malta,anEUmembercountry,isaneconomicallywell-developedcountrywithitspercapitaGDPin2017reachingUS$27,145.81,considerablyhigherthantheworld’saverage.MaltaestablisheddiplomaticrelationswithChinaonJanuary31,1972–oneofthefirstWesterncountriestodoso.Sincethen.