自主R&D、国际R&D技术溢出与基础设施

Independent R&D,International R&D Technology Spillover and Infrastructures

网络效应的存在使以交通和通讯为代表的基础设施能够促进自主R＆D能力以及国际R＆D技术溢出效应的提高。使用1994—2012年中国省际面板数据检验了各地区自主R＆D资本以及国际R＆D资本对全要素生产率的溢出效应，发现自主R＆D能力以及国际R＆D技术溢出效应在不同地区间存在明显的差异性。在此基础上，利用面板平滑转换模型（PSTR），以交通和通讯基础设施为转换变量，测算了引发自主R＆D能力和国际R＆D技术吸收能力变化的基础设施的门限特征。检验结果验证了门限效应的存在，并表明各地区在大力发展和完善通讯基础设施的同时，应根据本地的实际情况发展交通基础设施。

The existence of network effect makes it possible for infrastructures represented by transportation and communication to improve the innovation ability of independent R＆D and inter- national R＆D technology spillover effect. This paper tests the spillover effect of independent R＆D capital and international R＆D capital on total factor productivity by using provincial panel data in China from 1994 to 2012. The result shows that the independent R＆D capacity and the technology spillover effect of international R＆D have significant differences among different regions. Based on this, the paper measures the threshold characteristics of infrastructures which lead to the changes of the dependent R＆D capacity and the independent R＆D technology absorptive capacity by using panel smooth transition regression （PSTR） model and transportation and communication infrastruc- tures as the changing variables. The results prove the existence of threshold effect and show that while developing and improving the communication infrastructures of different places, it is necessa- ry to develop transportation infrastructures based on the actual situation of the places.