An Empirical Study On The "Threshold Effect" In The Relationship Between R&d Investment And Innovation Performance

The rapid development of the globalization process has promoted trade exchanges among countries in the world,and the links between countries have become increasingly closer.The mutual benefits and competition between countries have also increased.Not only are there competitions and challenges in the economy,but also competition in science and technology is fierce.Governments and enterprises have realized that scientific and technological innovation plays an important role in improving enterprise innovation ability and national competitiveness.Therefore,they pay more attention to R&D investment and scientific and technological innovation,and increase capital and manpower investment in R&D investment.And they promotes the continuous development of scientific and technological revolution,and sets off a round of industrial change.Combined with the literature analysis method,this paper recaps and summarizes the domestic and foreign research status of the relationship between corporate R&D investment and innovation performance,and narrates and analyzes innovation status and innovation problems of Industrial Enterprises above Designated Size in China.Then this paper introduces in detail the relevant theories and the threshold model and learns from Hansen panel threshold model.Using panel data of Industrial Enterprises above Designated Size of 30 provinces in China in 2011-2016 year and taking foreign technology introduction level as the threshold variable,this paper studies deeply the "threshold effect" in the relationship between R&D investment and the innovation performance of the regional Industrial Enterprises above Designated Size in China in the regression model of nonlinear panel threshold.The study finds that there is a significant single threshold effect between R&D expenditure investment and economic innovation performance,and there are significant double threshold effects between R&D expenditure investment and knowledge-based innovation performance and R&D human input and economic innovation performance and R&D human input and knowledge-based innovation performance in the Industrial Enterprises above Designated Size in China.In addition,with the increase of the level of foreign technology introduction,R&D expenditure investment has not had a positive effect on the promotion of economic innovation performance,but has had a negative effect.The change process of influence between R&D expenditure investment and knowledge-based performance changes from a negative effect to a positive effect,and then to a no significant negative effect.The change process of the influence between R&D human input and economic innovation performance further strengthens and then begins to decrease,and the overall effect was positive and there was no negative effect.The change process of the influence between R&D human input and knowledge-based performance changes from a negative effect to a positive effect and then the effect weakens,and it is still a positive impact.Finally,according to the threshold interval of the different models,this paper separately divides data from 30 provinces in China into different ranges and conduct research and analysis.According to the analysis results of different models and the problems existing in the innovation of Industrial Enterprises above Designated Size in China,this paper puts forward a series of targeted countermeasures and suggestions.