Water has traditionally been considered a physically scarce resource in Northwestern China, and most investigations of water scarcity focus on the finite nature of water supplies. Based on the input–output analysis, this paper establishes a number of indicators of water consumption to analyze...

The outbreak of Yantze vole (Microtus fortis) population in Dongting Lake region is closely related to the evolvement of lake beaches, because the deposition of lake sediments results in the expansion of lake beaches, which provides the possibility of the increase of the vole’s...

The assembly and hoisting process of the wind turbine rotor in an open wind environment are regarded to improve the hoisting safety, efficiency and quality. The wind turbine rotor model of a 1.5 MW wind turbine are given, and the hoisting forces of the wind turbine rotor in different poses with...

We study an overlapping generations model where the probability that money can lose its value is an endogenous function of the level of aggregate real money balances. The economy can display multiple stationary equilibria where the aggregate bubble on money is stochastic and the level of...