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Nowadays, Dongting Lake Wetland is facing with a series of ecological problems such as ecological deterioration, biodiversity reduction, ecological adjustment function decreasing. This study took the East Dongting Lake wetland as research area, and comprehensively evaluated the health status of wetland ecosystem by using of CBERS remotely sensed images. Firstly, the model of decision tree for classification...
There has been a furious price competition among port logistics enterprises in order to secure the cargo zealously. Therefore, how to prevent destructive price competition from draining all of the profits as well as which strategy should be applied have become the primary center of attention in the port industry. Bertrand model is just a effective means of solving in the price war. It was employed...
The conversion rule of the 3-ketosteroid-Delta1-dehydrogenation by Arthrobacter globiformis ATCC 31250 and the effect of the cell wall and cell membrane on biotransformation have been studied. Steroid compounds with different functional groups show a diversity of physicochemical properties at the macroscopic level. We measured the melting point, specific rotation and absorption coefficient of 3-ketosteroid...
This paper focuses on establishing the electricity consumption-forecasting model based on the gene expression programming that was brought forward by a Portuguese researcher, named Ferreira C. in 2001. The result demonstrates that the methodology that can overcome barriers such as: limited data, complex calculating process, is feasible and effective with higher accuracy.
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