基于产品质量竞争视角,构建了包含纵向和横向差异的拟线性效用函数,利用博弈论和信息经济学分析方法进行了模型推演和数值模拟,并细分销售环节的差异性和研发环节的外部性两个维度,对国家技术创新战略转型当中政府补贴政策的效率进行福利分析。研究发现:第一,要达到同等的社会福利水平,如果对企业的生产活动进行补贴,所需要的费用远高于对研发活动的补贴,并且多支出的部分全部转化成了企业的利润;第二,补贴效率与产品横向差异呈"U"型关系,表明对技术溢出水平高的产业进行补贴其福利提升的效果要明显的高于对技术溢出水平低的产业进行补贴。为此,政府在进行产业发展战略规划时,应当结合产业生命周期的不同阶段,实行差异化和有针对性的扶持与补贴政策。
Abstract
Based on the perspective of product quality competition, we build a model with quasi-linear utility function which contains vertical differentiation and horizontal differentiation. With the function and the using of game theory, information economics, simulation deduction and numerical simulation, we conduct welfare analysis on the efficiency of government subsidy in the transition of national technology innovation strategy from the dimensions of sales variance and R&D externality. The conclusions of paper show that: First, in order to achieve the same level of social welfare effect, the cost of subsidies on products is higher than the cost of R&D subsidy. Moreover, the extra cost of subsides will transfer to firm's profits. Second, the U-shaped relationship between the subsidy efficiency and horizontal differentiation is verified and the welfare increase of subsidies on industries with high technology spillover is significantly higher than that on the industries with low technology spillover subsidies. Therefore, the government should implement different support and subsidy policies based on the different stages of the industry.
关键词
质量竞争 /
技术溢出 /
产品差异 /
R&D补贴
Key words
quality completion /
technology spillovers /
product differentiation /
R&D subsidy
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基金
国家社科基金重大项目"支撑未来中国经济增长的新战略区域研究"(批准号:14ZDA024,起止时间:2014-2017);国家自然科学基金项目"基于动态DCI和CGE分析技术的区域一体化与福利补偿研究"(批准号:71173101,起止时间:2012-2015);教育部重点研究基地重大项目"长三角打造具有国际竞争力的世界级城市群问题研究"(批准号:11JJD790044,起止时间:2011-2014)。
