Food security is one of the main challenges facing humanity, and increasing crop yields is critical to meet the growing global food demand. Grain production in China has remarkably improved since its founding in 1949, but the growth remains uneven across regions. The goal of this research was to...

This paper studies the dynamic change of volatility spillovers between several major international financial markets during the global COVID-19 pandemic using Diebold and Yilmaz's connectedness index. We found that the total volatility spillover in this March reached its highest level of recent...

Estimation of the covariance matrix of asset returns is crucial to portfolio construction. As suggested by economic theories, the correlation structure among assets differs between emerging markets and developed countries. It is therefore imperative to make rigorous statistical inference on...

As the key technology of extracting remote sensing information, the classification of remote sensing images has always been the research focus in the field of remote sensing. The paper introduces the classification process and system of remote sensing images. According to the recent research...

In the past China has been self-sufficient in beef products, but, with a dramatic increase in consumer spending on food, demand for beef, which is seen as a novel and nutritious food, has grown. By employing a partial equilibrium model and sensitivity analysis under different scenarios, this...

This paper examines the China’s coal chemical strategy. As a part of national energy strategy, China’s coal chemical industry induces conflicts on technical level, economic level and policy level. The analysis of this paper is under the policy framework and discusses the causes and effects...