融资渠道、政府补助与中国矿业企业研发投入
郑明贵,张静,董娟

Financing Channels,Government Subsidies and R&D Investment of Chinese Mining Enterprises
Minggui ZHENG,Jing ZHANG,Juan DONG
表5 政府补助的信号传递效应检验
Table 5 Signal transmission effect test of government subsidy
变量回归系数
模型(7)模型(8)模型(9)
Sub0.0721**0.5960**0.0778**
(2.29)(2.09)(2.09)
ExFund0.0188***
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)
Share0.0051**-0.0311***0.0066***
(2.03)(-2.76)(2.70)
Cap1.2110***-13.8700***3.0220***
(6.75)(-8.18)(17.57)
Growth-0.0605***1.0920***-0.0840***
(-2.98)(3.93)(-4.14)
cons9.4960***28.6300***9.0970***
(30.40)(8.99)(19.66)
Wald chi24 334.24***176.67***4 850.65***
N849851847