In order to enhance the stability and methane production efficiency in anaerobic digestion(AD) of chicken manure(CM), this study investigated the effect of biochar loaded with magnetic nanoparticles on the AD. Fe3O4 nanoparticles could be successfully loaded onto biochar with high crystallinity...

Human facial expressions change so subtly that recognition accuracy of most traditional approaches largely depend on feature extraction. In this article, the authors employ a deep convolutional neural network (CNN) to devise a facial expression recognition system to discover deeper feature...

This paper analyzes the effects of the earlier selective two-child policy (TCP) in the 1990s (both parents have to be only children) to explore the impacts of this relaxation on the marriage market as well as the fertility effect due to the marriage choice distortion. By using a difference in...

This paper analyzes how fertility preference affects individuals' marriage outcomes. By using the selective Two-child Policy in China, which relaxed Han Chinese and only child's birth quota hence made them more attractive, I find that after the policy, the treatment group is more likely to marry...

This paper identifies a positive causal effect of board gender diversity on firm performance by utilizing unique historical events in China. Specifically, the Famine resulted in an evident gender gap in the supply of qualified directors of certain cohorts. Since the shocks differ in both gender...

Using a relaxed one-child policy in China for couples who are both only-children themselves, this paper estimates the causal effect of the policy on people’s marital choices and fertility outcomes. Applying a Difference-in-­Differences approach, I find that only-children became more likely to...