Using panel data of 83 counties observed from 2000 to 2015, the marginal abatement cost (MAC) of soil erosion is accurately evaluated by directional distance function with convex expectile regression. Besides, we further explore how the external variables affect shadow prices and the choice of...

Mitigating the environmental impact of agriculture is a major issue in negotiations on the future of the European Union's Common Agricultural Policy. Organic farming is commonly put forward in these discussions as a promising way to reduce the negative environmental impact of agriculture....

Agri-environmental-climate schemes provide payments for ecosystem services by compensating farmers to implement management actions or obtain ecological results. To compare farmer preferences for action-based schemes, result-based schemes, or a hybrid, we conduct a discrete choice experiment in a...

Urban-rural medical insurance integration aims to raise the medical insurance reimbursements for rural residents and ultimately improve their health. Using China Family Panel Studies (CFPS) from 2010 to 2018, we employ a time-varying difference-in-differences (DID) model to identify the impact...

The traditional(plug-in) return for the Markowitz mean-variance (MV) optimization has been demonstrated to seriously overestimate the theoretical optimal return, especially when the dimension to sample size ratio $p/n$ is large. The newly developed bootstrap-corrected estimator corrects the...

This paper proposes the spectral corrected methodology to estimate the Global Minimum Variance Portfolio (GMVP) for the high dimensional data. In this paper, we analysis the limiting properties of the spectral corrected GMVP estimator as the dimension and the number of the sample set increase to...