中国高新技术产业开发区的知识基础及其创新效应——基于国家级高新区上市企业的研究

林剑铬, 夏丽丽, 蔡润林, 蔡虹绮

The knowledge bases of China's High-Tech Industrial Development Zones and their effects on innovation: A study on the listed enterprises

LIN Jiange, XIA Lili, CAI Runlin, CAI Hongqi

图2 四种知识基础的聚类变量相对值大小的比较

Fig. 2 Comparison of relative values of four knowledge bases' clustering variables