上市公司500强企业网络嵌入对中国城市经济增长的影响
盛科荣, 张杰, 张红霞

Network embedding and urban economic growth in China: A study based on the corporate networks of top 500 public companies
SHENG Kerong, ZHANG Jie, ZHANG Hongxia
表4 两阶段最小二乘法稳健估计结果
Tab. 4 Robust estimation results from two-stage least squares method
变量 模型(9) 模型(10) 模型(11) 模型(12) 模型(13) 模型(14) 模型(15) 模型(16)
全体 全体 东部 中西部 核心 外围 较大 较小
ln(k) 0.709***
(26.72)		 0.712***
(26.84)		 0.579***
(11.00)		 0.755***
(24.13)		 0.538***
(11.87)		 0.741***
(24.30)		 0.534***
(9.68)		 0.753***
(26.77)
ln(degree) 0.074***
(5.56)		 0.077***
(5.58)		 0.079***
(3.50)		 0.055***
(2.83)		 0.128***
(4.92)		 0.102***
(4.00)		 0.134***
(4.99)		 0.064***
(3.04)
ln(NlagGDP) -0.008
(-1.20)		 0.117
(1.35)		 -0.008
(-1.20)		 0.578***
(3.88)		 -0.015*
(-1.90)		 0.039**
(2.23)		 -0.014**
(-2.17)
ln(density) 0.054*
(1.83)		 0.053*
(1.79)		 0.092**
(2.07)		 0.013
(0.32)		 0.023
(0.42)		 0.055
(1.59)		 0.012
(0.23)		 0.049
(1.44)
ln(SlagGDP) 0.010**
(2.07)		 0.009**
(2.04)		 0.025**
(2.33)		 0.005
(1.10)		 0.026***
(3.32)		 0.009
(1.40)		 0.014
(1.61)		 0.009*
(1.89)
manufact 0.323***
(4.22)		 0.327***
(4.27)		 0.395***
(3.00)		 0.306***
(3.15)		 0.207
(1.12)		 0.317***
(3.78)		 0.576***
(2.70)		 0.307***
(3.78)
reseacher 0.102
(1.07)		 0.101
(1.05)		 0.260
(1.03)		 0.178
(1.60)		 0.069
(0.39)		 0.085
(0.78)		 -0.003
(-0.01)		 0.145
(1.36)
time -0.119***
(-5.53)		 -0.117***
(-5.40)		 -0.089*
(-1.84)		 -0.143***
(-5.36)		 -0.235***
(-4.29)		 -0.145***
(-5.64)		 -0.021
(-0.65)		 -0.147***
(-5.87)
样本数量 513 513 195 314 139 374 115 398
Durbin 0.003 0.003 0.023 0.039 0.045 0.016 0.048 0.013
Wu-Hausman 0.003 0.003 0.019 0.036 0.030 0.017 0.028 0.013
R2 0.851 0.852 0.768 0.873 0.862 0.834 0.888 0.838