长三角地区知识守门人空间演变与作用机制研究

区域创新有赖于不同知识的流动和组合,而知识守门人对区域间知识流动起到至关重要的作用.论文利用2001-2015年专利合作数据,运用社会网络分析方法研究长三角地区各城市的知识守门人及其贡献率演化特征,进一步构建固定效应负二项回归模型分析知识守门人的作用机制.结果 表明:①在主体层面,企业在长三角地区知识守门人中数量占比逐...

Spatial evolution and mechanism of knowledge gatekeepers in the Yangtze River Delta region

Regional innovation depends on the flow and combination of different knowledge. Knowledge gatekeepers spread the acquired external knowledge to the region and play a key role in regional innovation. However, the role of knowledge gatekeepers in different regional contexts remains to be discussed. Based on the patent cooperation data from 2001 to 2015, this study used social network analysis to identify knowledge gatekeepers in the Yangtze River Delta and measure its contribution rate. It then analyzed the spatial variation characteristics of quantity and contribution rate. Furthermore, this study used regression models to explore the importance of gatekeepers in cities with different knowledge bases. The results show that: 1) The proportion of enterprises among gatekeepers in the Yangtze River Delta has increased, but the contribution of gatekeepers is still dominated by universities. The openness of colleges and universities enables them to perform their functions as knowledge gatekeepers better than enterprises. Cities with a large number of gatekeepers in the Yangtze River Delta are concentrated in the Shanghai-Nanjing-Hefei-Hangzhou-Ningbo development zone, and the contribution rate of knowledge gatekeepers presents a core-periphery structure. Gatekeepers can promote and restrict the acquisition of external knowledge. Hangzhou and Shanghai, where gatekeeper contribution rate was high at the early stages, increased direct external contacts to improve the efficiency of knowledge absorption and dissemination. Other cities with low gatekeeper contribution rates continue to rely on the role of gatekeepers. 2) External linkages of cities have a significant positive impact on the renewal of urban knowledge and the mechanism of knowledge gatekeepers on urban knowledge renewal is spatially heterogeneous. Cities with specialized knowledge bases rely more on external connections through gatekeepers. They need gatekeepers to access, absorb, and use external knowledge. In order to reduce the noise in knowledge flow, cities with diversified knowledge base tend to obtain external knowledge by direct connection. The results of this study provide a policy support for regional collaborative innovation by indicating that regional knowledge renewal should be suitable for the cities of concern, and promote the regional endogenous growth model driven by knowledge spillover.