Results 11 to 20 of about 2,079,774 (295)

Optimal Harvest Problem for Fish Population—Structural Stabilization

open access: yesMathematics, 2022
The influence of environmental conditions and fishery on a typical pelagic or semi-pelagic fish population is studied. A mathematical model of population dynamics with a size structure is constructed. The problem of the optimal harvest of a population in
Aleksandr Abakumov, Yuri Izrailsky
doaj   +1 more source

Stackelberg Population Dynamics: A Predictive-Sensitivity Approach

open access: yesGames, 2021
Hierarchical decision-making processes traditionally modeled as bilevel optimization problems are widespread in modern engineering and social systems. In this work, we deal with a leader with a population of followers in a hierarchical order of play.
Eduardo Mojica-Nava, Fredy Ruiz
doaj   +1 more source

General state-space population dynamics model for Bayesian stock assessment [PDF]

open access: yes, 2015
201
Blomstedt, Paul A.   +8 more
core   +1 more source

Public opinion regarding government response to COVID-19: case study of a large commercial city in Nigeria

open access: yesThe Pan African Medical Journal, 2021
INTRODUCTION: Government measures to contain the COVID-19 pandemic cannot be effective without widespread compliance by the public. A greater understanding of citizens´ perceptions of these measures can help government agencies adapt their strategies to ...
Ismaeel Yunusa   +5 more
doaj   +1 more source

A General Model of Population Dynamics Accounting for Multiple Kinds of Interaction

open access: yesComplexity, 2020
Population dynamics has been modelled using differential equations almost since Malthus times, more than two centuries ago. Basic ingredients of population dynamics models are typically a growth rate, a saturation term in the form of Verhulst’s logistic ...
Luciano Stucchi   +3 more
doaj   +1 more source

Dynamics of General Class of Difference Equations and Population Model with Two Age Classes

open access: yesMathematics, 2020
In this paper, we study the qualitative behavior of solutions for a general class of difference equations. The criteria of local and global stability, boundedness and periodicity character (with period 2 k ) of the solution are established ...
Osama Moaaz   +3 more
doaj   +1 more source

Migration Dynamics for the Ideal Free Distribution [PDF]

open access: yes, 2006
This article verifies that the ideal free distribution (IFD) is evolutionarily stable, provided the payoff in each patch decreases with an increasing number of individuals.
Cressman, Ross, Křivan, Vlastimil
core   +2 more sources

Generational Spreading Speed and the Dynamics of Population Range Expansion [PDF]

open access: yesThe American Naturalist, 2015
Some of the most fundamental quantities in population ecology describe the growth and spread of populations. Population dynamics are often characterized by the annual rate of increase, λ, or the generational rate of increase, R0. Analyses involving R0 have deepened our understanding of disease dynamics and life-history complexities beyond that afforded
Bateman, Andrew W.   +3 more
openaire   +4 more sources

Limit theorems for multi-type general branching processes with population dependence [PDF]

open access: yes, 2019
A general multi-type population model is considered, where individuals live and reproduce according to their age and type, but also under the influence of the size and composition of the entire population.
Fan, Jie Yen   +3 more
core   +2 more sources

Analyzing the future of housing provision in a high-demographic growth region [PDF]

open access: yesE3S Web of Conferences, 2023
This scientific article aims to determine the level of security of Kyrgyzstan citizens with regard to housing until 2030. The study takes into account the historical period from 1990 to present, analyzing the development of the housing stock and ...
Assylbayev Aidar   +4 more
doaj   +1 more source

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