How Do Different Types of Environmental Regulations Affect Green Innovation Efficiency?

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Type</td><td class="align_center">Indicator</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left" rowspan="2">Stage 1 input</td><td class="align_center">Number of R&amp;D staff</td></tr><tr><td class="align_center">Investment of R&amp;D</td></tr><tr><td class="align_left">Stage 1 output</td><td class="align_center">Number of patent applications</td></tr><tr><td class="align_left" rowspan="2">Stage 2 input</td><td class="align_center">Number of patent applications</td></tr><tr><td class="align_center">Investment in the treatment of environmental pollution</td></tr><tr><td class="align_left" rowspan="2">Stage 2 output</td><td class="align_center">Transaction value in technical market</td></tr><tr><td class="align_center">Environmental pollution index</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Two-stage green innovation efficiency evaluation index system.</div>

Journal of Mathematics

tab1

Table 1

Table 1: How Do Different Types of Environmental Regulations Affect Green Innovation Efficiency? 