The Differences of Spatial and Temporal Study on R&D Investment's Contribution to High-Tech Innovation
Yu Liping1,Song Xiayun2,Liu Aijun3
1.Business School of Ningbo University,Ningbo 315211,China; 2.Business School of Nanjing University Nanjing 310018,China;3.School of Economics and Management,Nanjing Agricultural University,Nanjing 210095,China
Abstract：Based on the panel data of high-tech industry in China,the paper used panel varying coefficient model to study the innovation's contribution of independent R&D investment to high-tech industry in different regions,and used regional and time panel threshold regression model to study the threshold effects of independent R&D investment.The results show that:there are significant regional threshold effects for independent R&D investment;the time threshold effect of independent R&D investment is obvious too,and its elasticity modulus has gradually increased;the effect and efficiency of full-time and equivalent of introduction technology,the purchase of domestic technology,renovation and R&D personnel are not high overall,which reflects those problems that the secondary development level of China's high-tech industry introduce technology is not high and the level of update and transformation is low,and so on.
俞立平, 宋夏云, 刘爱军. 自主研发投入对高技术创新贡献的时空差异[J]. 中国科技论坛, 2015(2): 11-14.
Yu Liping,Song Xiayun,Liu Aijun. The Differences of Spatial and Temporal Study on R&D Investment's Contribution to High-Tech Innovation. , 2015(2): 11-14.
[1]Keller W.Geographic Localization of International Technology Diffusion[J].American Economic Review,2002,92(1):120-142. [2]Griliches Z.Issues in Assessing the Contribution of Research and Development to Productivity Growth[J].Bell Journal of Economics,1979,(1):92-116. [3]Jaffe A B.Real Effects of Academic Research[J].The American Economic Review,1989,(5):957-970.
2015, 
