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4 政府补助的调节效应检验
Table 4 Adjustment effect test of government subsidy
变量回归系数
模型(5)模型(6)
EnFund0.0117***0.0131***
(6.15)(7.65)
ExFund0.0105***0.0109***
(8.61)(9.15)
Sub0.03220.1620***
(0.94)(4.32)
EnFund × Sub0.0079***
(5.14)
Size-0.4500***-0.4140***
(-22.24)(-21.50)
Age-0.5130***-0.5340***
(-5.12)(-6.05)
Share0.0069***0.0075***
(2.87)(3.27)
Cap1.7900***1.8440***
(10.26)(11.40)
Growth-0.0471**-0.0421**
(-2.35)(-2.04)
year控制控制
cons12.2500***11.3600***
(23.87)(24.05)
Wald chi2991.59***1 458.19***
N847847