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周期环境
    Optimal control of population dynamic system with age-structure in periodic environment
    周期环境下具有年龄结构种群动力系统的最优控制
    A neutral delay competitive two-species Lotka-Volterra competition dynamics systems are investigated in periodic environment.
    本文研究了周期环境下中立时滞两种群Lotka-Volterra竞争动力系统。
    THE COOPERATIVE OR COMPETITIVE SYSTEMS IN A PERIODIC ENVIRONMENT
    周期环境中的竞争或共存系统
    Uniform persistence of a two nutrient Chemostat model is considered. The model incorporates periodic environment and time delay due to lapce between the uptake of nutrient by cells and the incorporation of the biomass.
    该文研究了一类Chemostat模型的一致持续生存 ,该模型引入了周期环境和营养从吸收到转化为生物量的这种时滞。
    With the help of a continue theorem based on Gains and Mawhins' coincidence degree and the knowledge of the Functional response, easily verifiable criteria are established for the global existence of positive periodic solution of a predator-prey system with functional response in a periodic environment.
    基于GainsandMawhin的重合度延拓定理和泛函反应知识,证明了在一个周期环境中带有泛函反应的捕食者———食饵系统正周期解的全局存在性。
    With the help of a continuation theorem based on Gaines and Mawhin's coincidence degree, easily verifiable criteria are established for the global existence of positive periodic solution of an impulsive equation with a distributed delay in a periodic environment.
    利用Gaines和Mawhin的重合度理论,给出了一个周期环境下具有分布时滞的脉冲微分方程的正周期解的存在性的判定。
    In order to verify the existence and global stability of positive periodic solutions to the food chain system of three species with time delays in a periodic environment, this article constructed a suitable Lyapunov function to obtain a set of sufficient conditions for the global stability of the system by using Gaines and Mawhin's continuation theorem of coincidence degree theory.
    为了证明一类在周期环境中带时滞的三种群食物链系统的正周期解的存在性和全局吸引性,利用 Gains and Mawhin’s的重合度延拓定理,并通过构造一个恰当的李雅普诺夫函数找出了这个正周期解的全局吸引性的充分条件.在这个模型中,考虑三个种群——y1,y2,y3,其中y1是y2的食饵,y2是y3的食饵;
    The optimal control problem of linear population dynamic system with age-structure in periodic environment was investigated.
    在周期环境下,研究一类具有年龄结构种群线性动力系统的最优控制问题.
 

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