摘要
选取2007—2011年我国沪深两市455家制造业上市公司为研究对象,构建了修正的Cobb-Douglas生产函数,采用OLS回归分析实证检验上市公司研发投入绩效的累积效应。研究结果显示:企业研发投入绩效存在显著的累积效应;2007—2010年上市公司的研发投入对企业绩效具有显著的推动作用,且2010年的累积效应最大,但这种推动作用在2011年并不显著。
This paper selects 455 manufacturing firms listed in Shanghai and Shenzhen Stock Exchanges from 2007 to 2011 as the study object,and establishes a modified Cobb-Douglas production function to empirically test the cumulative effect of R&D investment performance through the regression analysis by OLS.The result shows as follows:enterprise's R&D investment performance has significant cumulative effects during 2007-2010;this cumulative effect is the largest in 2010;however,the promotion effect is not significant in 2011.
出处
《技术经济》
CSSCI
2012年第10期47-51,共5页
Journal of Technology Economics
关键词
研发投入
公司绩效
累积效应
R&D investment
enterprise's performance
cumulative effect
