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
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宓泽锋, 周灿, 尚勇敏, 马双, 曾刚
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The impact of local knowledge base on the formation of innovation clusters in emerging industries: The case study of China's fuel cell industry
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MI Zefeng, ZHOU Can, SHANG Yongmin, MA Shuang, ZENG Gang
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表8 基于二步面板差分GMM和面板OLS方法的稳健性检验
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Tab. 8 Robustness test based on 2-step panel difference GMM and panel OLS
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变量 | | 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 | L.l | 0.5070*** | 0.1620*** | 0.3930*** | | | | | | (0.0007) | (0.0002) | (0.0004) | | | | | 0.0217*** | | | 0.0525*** | | | | (0.9270e-04) | | | (0.0017) | | | | | 0.0640*** | | | 0.0675*** | | | | (0.4940e-04) | | | (0.0009) | | | | | 0.0422*** | | | 0.0746*** | | | | (0.4670e-04) | | | (0.0015) | | -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) | | 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) | | 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) | | 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 |
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