Geodesic
On optimal harvesting of renewable resource from the structured population
Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki, Tome 29 (2019) no. 4, pp. 501-517 Cet article a éte moissonné depuis la source Math-Net.Ru

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We consider the structured population which individuals are divided into age or typical groups, set by the normal independent system of difference equations. For the given population the problem of optimum harvesting of a renewed resource on finite or infinite time intervals is investigated. For the population maintained on a finite interval, we describe a craft strategy at which the greatest value of a total cost of a withdrawn resource is reached. If resource extraction occurs on an unlimited interval, we define average time profit and calculate its value at a stationary mode of operation; cases when the system has an asymptotically steady motionless point or a steady cycle are considered. A craft strategy which is optimum among other ways of operation is also described; it is shown, that under certain conditions it is stationary or differs from stationary only in value of control during the initial moment of time. The results of work are illustrated by an example of two-age exploited population in which individuals of either younger or both age groups are subject to trade.
Keywords: model of the population subject to harvesting, average time profit
Mots-clés : optimal exploitation, modes of exploitation of the population. 
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A. V. Egorova; L. I. Rodina. On optimal harvesting of renewable resource from the structured population. Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki, Tome 29 (2019) no. 4, pp. 501-517. http://geodesic.mathdoc.fr/item/VUU_2019_29_4_a2/

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