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Theory of optimal harvesting for a nonlinear size-structured population in periodic environments 被引量:4
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作者 ze-rong he rong liu 《International Journal of Biomathematics》 2014年第4期201-218,共18页
This paper investigates the theoretical aspects for an optimal harvesting problem of a nonlinear size-structured population model in a periodic environment. We establish the well-posedness of the state system by means... This paper investigates the theoretical aspects for an optimal harvesting problem of a nonlinear size-structured population model in a periodic environment. We establish the well-posedness of the state system by means of frozen coefficients and fixed point reasoning. The existence of a unique optimal policy is proved via Ekeland's variational principle, and the first-order optimality conditions are derived by a suitable normM cone and a dual system. The results obtained would be beneficial for exploration of renewable 展开更多
关键词 Body size population model HARVESTING fixed point normal cone Ekeland'sprinciple.
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