本地知识基础对新兴产业创新集群形成的影响——以中国燃料电池产业为例
宓泽锋, 周灿, 尚勇敏, 马双, 曾刚

The impact of local knowledge base on the formation of innovation clusters in emerging industries: The case study of China's fuel cell industry
MI Zefeng, ZHOU Can, SHANG Yongmin, MA Shuang, ZENG Gang
表8 基于二步面板差分GMM和面板OLS方法的稳健性检验
Tab. 8 Robustness test based on 2-step panel difference GMM and panel OLS
变量 LnICI
二步面板差分GMM方法 面板OLS回归
模型1 模型2 模型3 模型1 模型2 模型3
LnICI L.l 0.5070*** 0.1620*** 0.3930***
(0.0007) (0.0002) (0.0004)
LnAnalytic 0.0217*** 0.0525***
(0.9270e-04) (0.0017)
LnSynthetic 0.0640*** 0.0675***
(0.4940e-04) (0.0009)
LnSymbolic 0.0422*** 0.0746***
(0.4670e-04) (0.0015)
LnAWSW -0.0045*** -0.0038*** -0.0008*** -0.0005*** -0.0002* -0.6220e-04**
(0.0001) (0.5600e-04) (0.4170e-04) (0.0001) (0.0001) (0.0000)
LnTi 0.0014*** 0.0007*** 0.0013*** 0.0048*** 0.0006 0.0031***
(0.2120e-04) (0.1780e-04) (0.1660e-04) (0.0009) (0.0007) (0.0009)
LnFIE 0.0004*** 0.0027*** 0.0024*** 0.0004*** 0.0002** 0.1130e-04**
(0.0001) (0.7450e-04) (0.7260e-04) (0.0002) (0.0001) (0.0000)
LnFAI 0.0041*** 0.0013*** 0.0015*** 0.0014*** 0.0005* 0.0024***
(0.7660e-04) (0.3720e-04) (0.2790e-04) (0.0004) (0.0003) (0.0004)
常数项 0.0047*** 0.0129*** 0.0046*** -0.0158*** 0.0040** -0.0095***
(0.0010) (0.0006) (0.0008) (0.0024) (0.0018) (0.0022)
样本数 4365 4365 4365 4365 4365 4365
城市数量 291 291 291 291 291 291