摘要
运用空间面板计量经济学方法,以中国31个省级地区1998-2008年的数据为研究对象,分析这些地区之间R&D空间溢出效应。根据R&D溢出特点,重新对空间加权矩阵进行了定义,得到了一个经济距离与地理空间距离综合的最优空间加权矩阵。同时,通过实证对比分析得出R&D经费投入对专利产出的最大贡献滞后期为2期。研究发现,无论是间接途径还是直接途径,R&D空间溢出效应都十分显著,并且这种溢出效应呈现出M-A-R外部性。在对R&D经费投入按照来源构成分为私人投入和公共投入后,发现模型估计的精度有明显提高,前者对专利产出的贡献明显高于后者,而且直接途径下的前者的R&D空间溢出效应也要大于后者。
By using spatial panel econometrics methods, regarding 31 provincial - level regions of China data for the year 1998 -2008 as the research object, this paper analyzes the R＆D spatial spillover effect between these regions. According to R＆D spillover characteristics, this paper redefines spatial weight matrix, and finds the optimal spatial weighting matrix which includes both economic and geographical distance factor. Meanwhile, from empirical comparison R＆D funds come into the greatest contribution of the patent output lag period of 2. It is also found whether in direct or indirect way, R＆D spatial spillover effects are very significant, and this spillover effect appeared M -A -R externalities. By dividing R＆D funds into private investment and public investment in accordance with the source constitution, the accuracy of model estimation has risen markedly. It is also found private investment＇s contribution to the patent output was significantly higher than public investment, and in the direct way the former＇ s spatial spillover effect is also larger than the latter .
出处
《科学学研究》
CSSCI
北大核心
2011年第2期206-214,共9页
Studies in Science of Science
基金
国家自然科学基金面上项目(70871083)
上海市科技发展基金项目(10692102700)
