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1、搞要济的特征，只是在一定范围内具有规模经济的特征，超过这个幅度，则实现不了更优的效率。3、在时间序列上，通过对典型样本的分析显示，由强股权式向弱股权式偏好转变、由中间型向弱债权式转化时，不论是在债权融资效率、股权融资效率还是经营效率上，都呈现下降趋势；而由弱股权偏好向中间型转化时，在这3个方面都呈现上升趋势；唯有在由弱债权偏好向强债权偏好转化时的变化不呈一致变化趋势，具体来说，在债权融资效率和经营效率上呈现下降趋势，而股权融资效率则表现为上升态势。这表明公司资本结构的调整将会直接影响企业通过债权、股权及其他方式投融资所带来的效率。4、通过上述理论探讨
2、和实证研究可知，企业选择不同的投融资模式主要考虑的不仅成本的因素，还考虑企业的规模、所处的环境及经营管理方式，还有决策者对待风险的态度。关键词基础设施、投资、融资、投融资模式、效率II万方数据ABSTRACTABSTRACTPerfectiondegreeoftheinfrastructureisanimportantrestrictionfactorforacountry’ssustainableeconomicdevelopment,thoughcurrentlywithincreasingemphasisontheinfrastructuref
3、romthegovernments,whichbroughtinconstantoptimizationintheinfrastructureconstructiontosomeactuallydegree,butthesignificantproblemssuchasimbalancedregionaldevelopment,unqualifiedinfrastructureproductsandlocalconstructioninefficiencystillexist.Thecausestotheproblemsaredifferent,so
4、meduetotheconstructionprincipalorresponsibilities,somerelatedtounperfectedfinancingsysteminconcreteconstruction.However,theimperfectionoftheinvestmentandfinancingsystemincludesbothneededfinancingfundsofsinglesourcethatleadtounadvisablestructure,butmanifestedasthenon-effectivead
5、optedinvestmentandfinancingstyle.StudytotheseproblemswilldirectlypromoteChina'sinfrastructureconstruction,thusbeneficialtotheoveralllevelofChina'seconomicdevelopment.Predecessorstosuchproblemsinthestudyaremainlyoninfrastructure,investmentandfinancingitself,farlessconcernoncombi
6、nationofvariousfactorsthanonasinglefactor,aswellasthestudyofefficiencyofinvestmentandfinancingisinsufficient.Thispaper,concentratingonthisresearch,intheviewoffinancingmodelsefficiency,mainlydiscussesthecommon-useinvestmentstructure,financingpatternintheinfrastructureconstructio
7、nandcomparestheirefficiencyofdifferentfinancingmodels,aimingatimprovingtheefficiencyofgovernmentalinfrastructureinvestmentandoptimizingthemanagementfunctionsofinvestmentsubjectintheinfrastructureconstruction.Thecommoninvestmentstructureincludesjointventurecompanystructureandthe
8、non-companyjointventurestructure.Thecommonlyusedfinanc
