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本文依据新经济增长理论,利用柯布—道格拉斯生产函数的改进模型对我国2000—2012年工业企业研发投入对经济增长的弹性系数进行测算,结果显示2000—2012年我国工业企业研发投入弹性系数为0.181,研发投入增长对主营业务收入增长的贡献率约为20.8%。最终结论为:我国工业企业研发投入对经济增长有贡献,但低于欧美等国家水平;2000年以来我国工业企业年度间研发投入弹性系数走势相对平稳,但受国际金融危机影响明显;研发投入对经济增长具有较强贡献的企业主要分布在制造业、内资和小微型企业;东部地区企业研发投入对经济增长的贡献更为明显。
Based on the theory of new economic growth, this paper uses the improved Cobb-Douglas production function model to estimate the elastic coefficient of economic growth of R & D investment of industrial enterprises in China from 2000 to 2012. The results show that the elastic coefficient of R & D investment of industrial enterprises in our country from 2000 to 2012 is 0.181. The contribution of R & D investment growth to main business revenue growth is about 20.8%. The final conclusion is that the R & D investment of Chinese industrial enterprises contributes to the economic growth but is lower than that of other countries such as Europe and the United States. Since the year of 2000, the elasticity coefficient of R & D investment in China’s industrial enterprises has been relatively stable but significantly affected by the international financial crisis. Enterprises with strong contribution to economic growth are mainly located in the manufacturing industry, domestic capital and small and micro-sized enterprises. The contribution of R & D investment in the eastern region to economic growth is even more obvious.