主效应 (1) | 调节效应 (2) | 人工智能 (3) | 区块链 (4) | 云计算 (5) | 大数据 (6) | |
---|---|---|---|---|---|---|
Density | 0.755*** | 0.752*** | 0.268*** | 0.014** | 0.425*** | 0.090*** |
Density·Dual | 0.066** | |||||
Dual | -0.010 | -0.015 | 0.015 | -0.003 | 0.044 | 0.014 |
Lev | -0.030 | -0.031 | -0.090 | -0.041 | 0.042 | 0.043 |
ROA | 0.048 | 0.051 | -0.122 | -0.067 | 0.104 | 0.073 |
Cash | -0.081 | -0.080 | 0.074 | -0.148*** | -0.276* | 0.009 |
Size | 0.228*** | 0.228*** | 0.233*** | 0.007 | 0.139*** | 0.096*** |
Age | 0.159 | 0.145 | 0.935*** | 0.208** | 0.140 | 0.448** |
Board | 0.277*** | 0.280*** | 0.054 | -0.020 | 0.306*** | 0.064 |
SOE | -0.082 | -0.080 | -0.140 | 0.013 | -0.090 | 0.033 |
R&D | 0.030 | 0.030 | -0.174** | 0.015 | 0.061 | -0.113** |
Univ | 0.410 | 0.399 | 0.500 | 0.068 | -0.120 | 0.365 |
Constant | -5.950*** | -5.877*** | -8.010*** | -1.072 | -3.352 | -3.934*** |
YearDum | Yes | Yes | Yes | Yes | Yes | Yes |
N | 7403 | 7403 | 7403 | 7403 | 7403 | 7403 |
Adj.R² | 0.443 | 0.444 | 0.378 | 0.034 | 0.244 | 0.098 |