Abstract:
建立了对数种群模型N′(t)=N(t){r(t)-a1(t)ln[N(t)]-a2(t)ln[N(t-τ(t))]}的正周期解的存在性及吸引所有正解的充分条件,通过构造函数f(x)=x+exa(0<x≤1),研究了时滞种群模型的正周期解对所有正解的吸引性,改进了相关文献中的结论.
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北华大学学报(自然科学版)
Year: 2008
Issue: 05
Page: 397-402
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