Vegetation plays an important role in atmospheric, hydrologic and biochemical cycles and is an important indicator of the impact of climate and human factors on the environment. In this paper, a method, which combines the empirical orthogonal function (EOF) and temporal unmixing analysis (TUA)...

The small or middle coal mines with illegal operations in developing countries or regions can cause bad energy waste and environmental disruption. The project of coal-resource integration in Shanxi Province of China gives a new idea or an approach to energy saving and emission reduction. It is a...

I analyze a duopoly that competes first in product characteristics and then in prices. I show that when there exist consumers that are loyal to specific brands with no regard for product characteristics, the second-stage price game doesn’t have a pure-strategy equilibrium or symmetric...