CAJ | 학술논문

运用期权博弈方法，从无政府担保基本情形出发，构建 PPP 项目特许权期决策模型，考量政府参与风险分担对特许权期的影响。结果表明，收益波动率一定的情况下，特许权期随着政府最低收益担保期望价值的增加而减少；而在政府最低收益担保期望价值一定的情况下，特许权期随着收益波动率的增加而增加。鉴此，政府应根据项目的风险收益情况实施弹性特许权期制。
운용기권박혁방법，종무정부담보기본정형출발，구건 PPP 항목특허권기결책모형，고량정부삼여풍험분담대특허권기적영향。결과표명，수익파동솔일정적정황하，특허권기수착정부최저수익담보기망개치적증가이감소；이재정부최저수익담보기망개치일정적정황하，특허권기수착수익파동솔적증가이증가。감차，정부응근거항목적풍험수익정황실시탄성특허권기제。
This paper,taking the government investment and sharing risks into consideration, manages to seek out concession period decision models for Public Private Partnership with option game theory,studies the influence of government investment on concession period and demon-strates the above-mentioned models in the Guangshen highway.The result shows that when earn-ings volatility was stable,concession period reduced with the increase of the lowest income expec-tation value,while under certain lowest income expectation value of government,concession peri-od increased with the increase of earnings volatility.Still,the paper puts forward the argument that the government shall implement flexible concession period in accordance with the specific cir-cumstances of Public Private Partnership.