摘要
不同城市的企业研发投入存在明显差异,本文以我国30个主要城市2003-2014年沪深A股上市的信息技术业和制造业企业为样本,分析了企业研发投入是否存在城市效应以及具体的影响渠道。研究发现,企业的研发投入存在明显的城市效应,内生交互是主要影响渠道,而企业家活力是主要的内生交互渠道。进一步研究发现,研发投入的城市效应在年轻、小型、非国有和研发强度大的企业更明显,同时在成长型城市、东部地区、一线城市也更明显。本研究不仅丰富了企业创新和城市经济学方面的研究,而且为企业的创新投入提供了决策参考。
There are obvious differences in RD investment in different cities. We take listed firms in SSE and SZSE as samples,which belong to information technology industry and manufacturing industry in Chinese 30 major cities,and the sample period is 2003-2014. The goal of this paper is to verify whether there is a city effect in RD investment and what the specific channel is. The empirical results show that there is obvious city effect in RD investment; the endogenous interaction among the cities is the key channel,in which entrepreneurial vitality is the main channel.Further,we find that the effect is more obvious for younger,smaller,non state-owned and higher RD intensity firms,and for those firms in growing cities,eastern region and the first-tier cities. Our study not only enriches the theory of enterprise innovation and city economics,but also provides decision references for enterprises＇ innovation investment.
出处
《中国软科学》
CSSCI
CSCD
北大核心
2017年第3期110-122,共13页
China Soft Science
基金
国家自然科学基金项目(71371113)
国家社会科学基金项目(15BJY164)
教育部人文社会科学研究项目(14YJA790034)
关键词
研发投入
城市效应
内生交互渠道
企业家活力
R＆D investment
city effect
endogenous interaction channel
entrepreneurial vitality
