融资渠道、政府补助与中国矿业企业研发投入
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郑明贵,张静,董娟
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Financing Channels,Government Subsidies and R&D Investment of Chinese Mining Enterprises
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Minggui ZHENG,Jing ZHANG,Juan DONG
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表5 政府补助的信号传递效应检验
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Table 5 Signal transmission effect test of government subsidy
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变量 | 回归系数 |
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模型(7) | 模型(8) | 模型(9) |
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Sub | 0.0721** | 0.5960** | 0.0778** | | (2.29) | (2.09) | (2.09) | ExFund | | | 0.0188*** | Size | -0.3350*** | -0.3950*** | -0.3000*** | | (-24.40) | (-3.54) | (-12.93) | Age | -0.0771 | -5.8460*** | -0.1530*** | | (-0.75) | (-7.25) | (-3.38) | Share | 0.0051** | -0.0311*** | 0.0066*** | | (2.03) | (-2.76) | (2.70) | Cap | 1.2110*** | -13.8700*** | 3.0220*** | | (6.75) | (-8.18) | (17.57) | Growth | -0.0605*** | 1.0920*** | -0.0840*** | | (-2.98) | (3.93) | (-4.14) | cons | 9.4960*** | 28.6300*** | 9.0970*** | | (30.40) | (8.99) | (19.66) | Wald chi2 | 4 334.24*** | 176.67*** | 4 850.65*** | N | 849 | 851 | 847 |
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