CAJ | 학술논문

考虑生产同质产品的两个企业，企业投入环境研发以减少温室气体排放，并通过技术溢出免费从竞争企业学到环境研发技术。但由于市场机制会导致企业的环境研发水平低效率，政府通过补贴引导企业环境研发。通过构建三阶段的动态博弈模型、数理推导和数值模拟，对最优环境研发补贴政策和技术溢出效应进行分析。结果表明：在最优环境研发补贴政策实施后，企业的环境研发水平和社会福利是关于技术溢出程度增加的。此外，企业的环境研发水平和社会福利都有所提高，单位产出所排放的有害气体有所减少。因此，政府可以通过补贴政策提高环境研发水平，改善国家福利。
고필생산동질산품적량개기업，기업투입배경연발이감소온실기체배방，병통과기술일출면비종경쟁기업학도배경연발기술。단유우시장궤제회도치기업적배경연발수평저효솔，정부통과보첩인도기업배경연발。통과구건삼계단적동태박혁모형、수리추도화수치모의，대최우배경연발보첩정책화기술일출효응진행분석。결과표명：재최우배경연발보첩정책실시후，기업적배경연발수평화사회복리시관우기술일출정도증가적。차외，기업적배경연발수평화사회복리도유소제고，단위산출소배방적유해기체유소감소。인차，정부가이통과보첩정책제고배경연발수평，개선국가복리。
The duopoly model proposed in this paper considers two firms producing the homogeneous goods. Apart from investing in environmental R﹠D to reduce greenhouse gas emission,a firm can also learn the environmental R﹠D technology from its competitor for free through technology spillover. However,because the market economic system will lead to inefficiency of the level of environmental R﹠D,the government guides the environmental R﹠D of the enterprises by offering subsidy. With the help of a three-stage dynamic game model,mathematical deduction and numerical simulation,this paper analyzes the effect of the optimal environmental R﹠D subsi-dy and technology spillover. The result shows that after the implementation of the subsidy,the R﹠D level and social welfare of enterpri-ses increase in relevance to the degree of R﹠D spillover. Whatˊs more,the R﹠D level and social welfare of enterprises have increased accompanied by less emission of harmful gases per unit of output. Therefore,government can improve social welfare by raising the level of environmental research and development through the subsidy policy.