中文摘要：

基于中国战略性新兴产业2011—2014年上市企业的面板数据,运用门槛回归技术,考察了所有制差异视角下R＆D对企业技术进步的异质门槛效应。结果表明：R＆D强度只有超过一定门槛水平时,才能对企业技术进步产生促进作用,R＆D强度对企业技术进步影响的门槛效应存在显著的所有制差异;存在最优异质R＆D强度区间,国有企业为0.09%~2.27%,民营企业为0.96%~12.74%,公众企业为0.13%~6.34%,在该区间内R＆D强度对企业技术进步促进效应最明显;当跨越最优R＆D强度区间时,R＆D投资对国有企业技术进步具有负向效应,而对民营企业和公众企业技术进步均依然有促进效应,但这种促进作用呈现边际效应递减规律。

英文摘要：

Based on 2011--2014 panel data of listed companies in strategic emerging industries in China, by using Threshold Regres- sion Model, this paper examines R＆D input＇s heterogeneous effect on the technological progress of the enterprises under the perspective of the ownership difference. The study shows that the R＆D input would promote the enterprises＇ technological advance, only When the intensity touches a certain threshold level, and there is the ownership difference upon R＆D＇s threshold effect on the enterprises＇ technological advance. There is the most excellent heterogeneous R＆D intensity range, state-owned enterprise 0.09% -2.27%, private enterprise 0. 96% - 12. 74%, public enterprise 0. 13% - 6. 34%. Within these intensity scope, R＆D intensity has the most promotion effect on the enterprises＇ technological progress. When it goes far beyond the above range, R＆D would have the inhibiting effect on the technological progress of the state-owned enterprise, while still promote the private and public enterprises with the diminishing marginal trend.