Threshold Effect Of Independent R&D And Technology Import On Innovation Performance

Since the reform and opening up 40 years ago,China's economy has made remarkable achievements.With the continuous growth of China's total economic volume,the requirements of transforming the mode of economic growth and improving the quality of economic development are also increasing.Technological innovation is the source of a country's sustainable economic development and the driving force of social development.In the eighteenth National Congress,China has established the strategy of innovation-driven development;in the report of the nineteenth National Congress,it is emphasized that innovation is the strategic support for the construction of China's modern economic system.According to the data published over the years,the growth rate of innovation output in China lags behind that of innovation input.A large number of studies show that the impact of independent R&D investment and technology import investment on innovation performance is constrained by many external environmental factors.Based on this background,this paper attempts to explore the optimal external environment interval of independent R&D input and technology import input on innovation output from a micro perspective.In theory,when combing the relevant literature,we find that the existing literature seldom considers the role of external environmental factors in the research of the impact of independent R& D and technology introduction on innovation performance.At the same time,based on the frontier literature,the mechanism of technological innovation and economic growth,independent innovation and technological innovation,technology introduction and technological innovation are analyzed and supplemented.In the empirical aspect,this paper chooses Hansen's threshold regression model,uses the provincial panel data of industrial enterprises in China from 2006 to 2017,takes independent R&D capital investment and technology import capital investment as the core explanatory variables,and takes open level and environmental regulation intensity as threshold variables to construct static panel threshold regression model,and explores independent research under different external environment levels.on differences in the impact of development and technology introduction on innovation output.The results of this study show that: firstly,in the model with the level of opening-up as the threshold variable,the impact of independent R&D and technology introduction on innovation performance exists a double threshold effect on the level of opening-up.With the increasing degree of opening to the outside world,the impact of independent R&D and technology introduction on innovation output decreases first and then increases,showing a positive U-shaped.Independent R&D capital investment has always been a significant boost to innovation output,while technology import capital investment has a negative effect on output at a moderate level of opening up.Secondly,in the model with the intensity of environmental regulation as the threshold variable,the single-threshold effect of independent R&D and the double-threshold effect of technology import have passed the significant test.The impact of capital input of independent R&D on innovation output has been increasing,but there is a "inflection point".The impact of capital input of technology import on innovation output decreases first and then increases.Thirdly,in terms of regional distribution,29 provinces,municipalities and autonomous regions in China have serious differences in the external environment.The level of opening up and the intensity of environmental regulation in eastern provinces are higher than those in central and Western provinces.