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5295 
6142党的十九大报告明确指出“要发展数字经济，建设网络强国，抢抓全球新一轮产业竞争制高点，促进实体经济加快转型升级”。在此背景下，解答网络基础设施能否以及如何影响微观企业的信息传递和技术知识扩散，具有重要的理论价值和现实意义。文章利用“宽带中国”战略的准自然实验和2008−2017年上市公司数据进行了实证分析。研究发现，良好的网络基础设施不仅可以促进上市公司向内部子公司的技术知识扩散，还可以促进与外部其他公司的技术合作。前者表现为注册地被选为“宽带中国”示范城市后，当地上市公司下属子公司的创新水平显著上升，后者则体现为当地上市公司与其他公司的联合创新显著增加。进一步研究表明，当上市公司的技术水平较高，或者子公司的地理位置较分散、网络基础设施较完备时，网络基础设施对公司内部技术知识扩散的积极作用更大；而当上市公司技术水平较高或者所在地区互联网用户较多时，网络基础设施对公司之间技术创新合作的影响更大。可见，加大网络基础设施的建设力度，有利于发挥技术知识的正外部性。
网络基础设施建设与企业技术知识扩散——来自“宽带中国”战略的准自然实验
摘要
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引用本文
薛成, 孟庆玺, 何贤杰. 网络基础设施建设与企业技术知识扩散——来自“宽带中国”战略的准自然实验[J]. 财经研究, 2020, 46(4): 48-62.
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