国金学术|我院李伟平助理教授在国际SSCI期刊《Telecommunications Policy》发表论文
个人介绍
李伟平，麻豆导航助理教授，公司金融方向硕士生导师。主要研究兴趣是公司金融、公司治理、公司社会责任、能源经济与创新。目前已在《European Journal of Finance》、《Finance Research Letters》、《Economic Systems》、《Economic Research-Ekonomska Istra?ivanja》、《Telecommunications Policy》、《Asia-Pacific Journal of Accounting & Economics》等国际SSCI/SCI期刊发表多篇论文。目前担任国际期刊《Asia-Pacific Journal of Accounting & Economics》、《Emerging Markets Finance and Trade》、《Financial Innovation》等期刊的匿名审稿人。
我院李伟平助理教授与中国科学技术大学黄加顺副研究员，剑桥大学郭力嘉博士，牛津大学Jim H. Hall教授合作的论文《Information and communications technology infrastructure and firm growth: An empirical study of China's cities》，已被国际SSCI Q2期刊《Telecommunications Policy》接受。我院李伟平助理教授为通讯作者。
论文介绍
Despite the importance of information and communications technology (ICT), previous studies of the business value of information technology have yielded mixed results. This study provides new empirical evidence that demonstrates the impact of cities’ ICT on firm performance. A series of panel datasets are assembled to measure the improvement of city’s ICT infrastructure and the change of firm performance during the years 2001-2016 in China. The findings demonstrate that city’s ICTs positively promoted firm performance, including financial profitability, marketing performance and innovation performance. Instrumental variables are employed to verify the positive impact of city’s ICTs infrastructure on firm profitability. Taking advantage of an exogenous variation of telecommunications upgrade as a natural experiment, this study uses the difference-in-difference approach to establish causality between cities’ ICT infrastructure and firm profitability. Mechanisms are explored, which shows that better labour quality, lower costs and higher transparency are the three possible channels through which ICTs influence firm profitability.
现有研究对于信息及通信技术发展的商业价值尚未有统一的看法。通过使用中国2001-2016年上市公司为例，本研究探究了区域的信息及通信技术设施的改善对公司综合绩效的影响。本文发现区域的信息基础设施的改善能够显着的提升公司的财务绩效、市场绩效与创新绩效。本文进一步通过利用城市的电话号码由8位向9位升级作为外生冲击进行双重差分的研究设计，确认了信息技术技术设施的改善能够因果性地促进公司的综合竞争能力。此外，本文进一步使用工具变量回归、更换变量衡量方式、分位数回归与倾向值得分匹配回归方法后，本文的结论依然稳健。最后本文发现，区域信息技术环境的改善能够提升区域的劳动力质量、降低公司运营成本，提高公司的信息透明度，进而改善公司的综合绩效。
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