Optimal management in a multi-cohort Beverton-Holt model with any number of age classes and imperfect selectivity is equivalent to finding the optimal fish lifespan by chosen fallow cycles. Optimal policy differs in two main ways from the optimal lifespan rule with perfect selectivity. First, ...
关键词:Beverton-Holt模型;单位补充量渔获量;生长模型;Akaike’sinformationcriterion; Bayesianinformationcriterion;数值计算 中图分类号:S932文献标志码:A文章编号:1673-9159(2008)06-0051-06 NumericalCalculationofYieldperRecruitmentin Non-classicalBeverton-HoltModel ZHULi-xin 1,2 ,HOUGang 2 (1.MarineCollege,Sha...
Dynamic optimization of Beverton-Holt density dependent continuous modelThin filmsRefractive indexFabricationFew studies have investigated autobiographical amnesia in neurodegenerative diseases and yet these pathologies are particularly relevant when addressing the issue of theories of long-term memory consolidation...
Beverton-Holt模型 1. Numerical Calculation of Yield per Recruitment in Non-classical Beverton-Holt Model; 非经典Beverton-Holt模型的数值计算 2) Beverton-Holt yield-per-recruitment model Beverton-Holt单位补充量产量模型 1. Estimation of biological reference points F_(0.1) and F_(MSY) for Trichiurus ...
randomized Beverton-Holt–type discrete modelIn this paper a randomized version of the Beverton-Holt type discrete model is proposed. Its solution stochastic process and the random steady state are determined. Its first probability density function and second probability density function are obtained by...
If the model coefficients are functions of a heritable phenotypic trait subject to natural selection then, by standard methods for modeling evolution, the model becomes a planar system of coupled difference equations, consisting of a Beverton-Holt type equation for the population dynamics and a ...
V.L. Kocic, A note on the nonautonomous delay Beverton-Holt model, J. Biol. Dynam. 4(2) (2010), pp. 131-139.Vlajko L. Kocić, A note on the nonautonomous delay Beverton-Holt model, J. Biol. Dyn. 4 (2) (2010) 131-139....
Beverton-Holt modelOur aim is to investigate the global asymptotic behaviour, oscillation, periodicity and bifurcation in discontinuous BevertonHolt type difference equationwhere x0>0, functions k and r are discontinuous piecewise constant functionssatisfyingand h is Heaviside function....
(1973), « Beverton-Holt model of a commercial fishery : optimal dynamics », Journal of the fisheries research board of Canada, 30, 1629-1640.Clark C, Edwards G, Friedlaender M (1973) Beverton-Holt Model of a Commercial Fishery: Optimal Dy- namics. J Fish Res Bd Can 30: 1629-...
Ackleh, A.S, Dib, Y., Jang, S.: A discrete-time Beverton-Holt competition model. Difference Equations and Discrete Dynamical Systems, World Scientific , 1-10 (2005)A.S. Ackleh, Y. Dib and S. Jang, A discrete-time Beverton-Holt competition model. Difference Equations and Discrete ...