高速铁路建设如何带动企业的创新发展——基于Face-to-Face理论的实证检验

HOW CHSR CONSTRUCTION DRIVES THE INNOVATION OF ENTERPRISES ——An Empirical Study Based on Face-to-Face Contact Theory

本文基于知识溢出视角和Face-to-Face理论,指出高速铁路建设构成了信息和技术跨区域流通、扩散和再创新的高速通道,为企业在更大范围内搜索面对面交流对象以发掘更多有用的异质性知识提供了途径。进一步地,本文以沪深两市A股上市公司为样本,引入断点回归模型和双重差分模型,实证检验了高速铁路建设促进企业创新发展的政策效应和经济后果。本文指出高速铁路建设增强了企业间的技术外部性,不仅显著地提升了企业的专利产出水平,而且还显著地提升了专利产出对于企业全要素生产率的边际贡献,且在带宽敏感性和间断点安慰剂检验中依然稳健。但高速铁路的这一效应存在企业异质性差异,表现为对大企业创新发展的带动作用更强。

In this paper, we carried out a theoretical analysis based on Face-to-Face Contact Theory with the perspective of knowledge spillover, and pointed out that CHSR created convenient transportation conditions for enterprises to searching appropriate partnering company.In the empirical analysis part, we tested CHSR’s policy effects, function mechanism and economic consequences by applying data of A-share companies in SSE and SZSE.The conclusion indicated as follow.CHSR had raised enterprises’ innovation output measured by patent authorization quantity.This effect was still significant in bandwidth sensitivity testing and discontinuities placebo testing, but showed heterogeneity among different scales of enterprises.The economic consequences analysis which applying TFP to measure enterprises’ production efficiency indicated that CHSR had improved the marginal contribution of enterprises’ innovation output..