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Pollution problem is getting worse in China's urban rivers at present. This paper, after analyzing the factors affecting urban river water quality and choosing such six principal evaluation factors as BOD5, CODcr, petroleum, volatile phenol, NH3-N and total phosphorus, establishes a Projection Pursuit analysis model for evaluating water quality in urban rivers, optimizes the evaluation model with...
Canpopy interception, evapotranspiration, runoff yield and concentration constitute primary hydrologic processes, which mathematic modeling contributes an important way to study hydrologic regularity. Jialingjiang hilly areas is an important ecological barriers and economic zone of Yangtyz river. In this paper, a tipical small watershed-Lizixi basin is selected to simulate main hydrology processes...
Differential evolution (DE), a population-based multi-objective evolutionary algorithm, steers optimization search through swarm intelligence produced by co-operation and competition among individuals within the swarm. With its unique memory ability, DE can track the dynamics of the current search, adjust its search strategy accordingly, and achieve good global convergence and robustness without resorting...
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