variables

Model 1

Model 2

Model 3

R & D human resource input

−0.1914

0.1109

−0.2266

R & D funding input

0.7674*

0.2700

1.1040

Popularization funding input

0.3828

−0.0358

0.6577

Number of funding project

0.6534

−0.4955

Number of funding project* R & D funding input

0.3901***

R2

0.9383

0.9492

0.9811

ΔR2

0.9229

0.9307

0.9717