企业间技术外溢的测度

Measurement of Technology Spillovers

本文建立一个包含物质资本和研发资本的外部性模型,证明了研发函数的线性特征,并从社会收益率和私人收益率之间的差异来分析技术外溢的程度,进而建立了技术外溢的理论测度。经验研究发现,中国内外资企业间技术外溢的方向是从内资到外资,研发收益率外溢比例在三种外溢测度下分别为:30%、13%和23%。

This paper builds an externality-based model with physical and R＆D capitals, proving a linear property of the R＆D function, deriving three measures of spillovers based on the differences between social and private rates of return. China＇s regional dataset supports a direction of spillovers from local economy to FDI. The estimates of three spillover measures are about 30%, 13% and 23% .