Using method of qualitative theory of ordinary differential equation, studies economic harvesting model with variable price and cost for a single population.
利用常微分方程定性理论的方法讨论了价格成本变化的单种群经济捕获模型。
The effect of diffusion on the permanence of the population in a polluted patch is studied by setting up a single population diffusive system in two patches.
本文通过建立两斑块的单种群扩散系统，主要研究扩散对其中受污染的斑块上种群生存的影响。
The new algorithm was based on single population without intermediate population, in which mutation operation, crossover operation and selection operation were used on the current population.
该算法基于单种群，在演化过程中直接对当前种群进行变异、交叉和选择操作，无须差异演化算法中的中间过渡种群。
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