modifier
发表于 2025-3-26 21:31:00
Christina Goldhar,James D. FordMost species of fish exhibit significant mobility. This mobility gives rise to varying density and location of the fish stock and thus tends to alter the harvesting conditions over time. To capture this feature of fish behaviour the corresponding fisheries models must be nonautonomous.
阴险
发表于 2025-3-27 02:33:04
The Role and Perspectives of FamiliesIn this paper we formulate continuous-time stochastic versions of fisheries problems, incorporating seasonal migration, utilizing the theory of stochastic differential equations. A method for numerical solution is also presented and an example given of actual calculations.
Progesterone
发表于 2025-3-27 08:20:54
https://doi.org/10.1057/9781137555694Ireland has long ranked with the United Kingdom, Norway, Canada and Greenland as a leading producer of wild Atlantic salmon, and in latter years has ranked third, after Norway and Scotland, in production of farmed Atlantic salmon.
AVERT
发表于 2025-3-27 10:41:51
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OVER
发表于 2025-3-27 16:45:58
A Stochastic Fisheries Problem with Seasonal MigrationsIn this paper we formulate continuous-time stochastic versions of fisheries problems, incorporating seasonal migration, utilizing the theory of stochastic differential equations. A method for numerical solution is also presented and an example given of actual calculations.
捏造
发表于 2025-3-27 21:28:34
Competition in Salmon FisheriesIreland has long ranked with the United Kingdom, Norway, Canada and Greenland as a leading producer of wild Atlantic salmon, and in latter years has ranked third, after Norway and Scotland, in production of farmed Atlantic salmon.
conduct
发表于 2025-3-27 22:19:27
,The Will-to-Research Children’s Drawing,ose of mainly theoretical and those of mainly empirical orientation. The reader should note, however, that some of the empirical papers have a considerable theoretical content. Thus, this classification is by no means precise.
Antarctic
发表于 2025-3-28 05:01:44
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流眼泪
发表于 2025-3-28 09:49:10
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Nebulous
发表于 2025-3-28 10:40:32
https://doi.org/10.1007/978-1-4614-8763-0ns by Hannesson (1983), Falk (1985), Conrad and Adu-Asamoha (1986), Ragozin and Brown (1985), Flaaten (1988) and Tu (1988). For the predator-prey case, the typical approach has been to assume that cost functions are linear in effort, resulting in bang-bang and singular controls..