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| 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 |
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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.
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Received: 07 July 2014
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[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. |
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2015, Vol. 0 
