This study takes the central, provincial and municipal Environmental Protection Interviews (multi-hierarchical EPI) as a mechanism innovation for precise environmental regulation in Yangtze River Delta (YRD) and constructs a multi-cutoff regression discontinuity design to accurately measure the...

The COVID-19 brings about a great quantity of digital entrepreneurs in China. In the fierce competition, positive psychological capital can better help them adjust emotions, cognition and behavior. However, little is known of how to improve the digital entrepreneurial psychological capital...