信息基础设施建设对城际技术转移的影响研究——基于“宽带中国”战略试点的准自然实验

Research on the Influence of Information Infrastructure Construction on Inter-city Technology Transfer:Evidence from a Quasi-natural Experiment of“Broadband China”Pilot Policy

基于IncoPat全球专利数据库,以2008—2019年间发生在中国273个地级及以上城市的185752件城际发明专利转让事件为研究样本,借助“宽带中国”战略试点政策和多期DID模型,评估信息基础设施建设对城际技术转移的影响。研究发现:(1)信息基础设施建设显著促进了城际技术转移,且可通过市场化效应、知识产权保护效应、城市联通效应进行正向调节。(2)在市场规模效应、政府创新驱动效应和技术差距效应的影响下,信息基础设施建设对东部地区城市、南方地区城市和中心城市城际技术转移的促进作用更强。(3)信息基础设施建设的技术转移效应存在空间地理距离衰减特征,有效空间半径为900千米,最优空间半径为400千米。因此,中国应完善全国信息技术交易平台,解决科技成果定价的难题,健全人工智能技术下的知识产权保护机制,培育区域发展新动能。

This paper employs the IncoPat global patent database and uses python to obtain a sample of 185,752 intercity invention patent transfer events in 273 prefecture-level and above cities in China between 2008 and 2019 to assess the impact of information infrastructure construction on intercity technology transfer with the help of the“Broadband China”pilot policy and the progressive DID model.The study found that:(1)Information infrastructure development significantly promotes inter-city technology transfer and can be positively moderated by the marketization,intellectual property protection,and city-connectivity effects.(2)Under the influence of the market-scale,government innovation-drive,and technology-gap effects,information infrastructure construction has a stronger role in promoting inter-city technology transfer among cities in the eastern and southern regions and central cities.(3)The technology-transfer effect of information infrastructure construction is characterized by the decay of spatial geographic distance,with an effective spatial radius of 900 km and an optimal spatial radius of 400 km.Therefore,information infrastructure can be relied upon to improve the construction of the national information-technology trading platform,solve the problem of pricing scientific and technological achievements,improve the intellectual property protection mechanism given the rise of artificial intelligence technology,and cultivate new drivers of regional development and growth.