Latent class models with crossed subject-specific and test(rater)-specific random effects have been proposed to estimate the diagnostic accuracy (sensitivity and specificity) of a group of binary tests or binary ratings. However, the computation of these models are hindered by their complicated...

Surface subsidence with various formation mechanisms possesses varied and complex influencing factors. Thus, studying surface subsidence mechanism and regularity under different special geological conditions is important in implementing disaster prevention and reduction programs. This paper...

With constant growth of China’s population and increasingly serious situation of farmland protection, the grain security has become a hot issue of China. This study firstly elaborated grain security measures in grain exporters, such as the United States, Australia, and EU, and grain...

Through overview of relevant literature and on the basis of basically grasping frontier study and development trend, this paper discussed the grain security from industrial structure, farmland protection, grain import, urbanization and industrialization, grain reserve, ecological protection, and...

Ground subsidence in underground coal mining areas causes environmental damage and creates hazards on the ground surface, which is long-term, widely distributed, and can lead to large-scale geological disasters. Achieving a high-precision method to predict mining subsidence deformation is very...

This paper examines how China's exports are affected by exchange rate shocks from countries that supply intermediate inputs to China. We build a simple small open economy model with intermediate goods trade to show that due to the intra-regional trade in intermediate goods, a devaluation of...

This paper is aimed to analyze the current situation and problems about use of various karst environments via filed survey, documentation and comparison methods, and to make reasonable recommendations about land use and management for different karst types in a bid to provide theoretical and...