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Showing 1-20 of 4,955 results
  1. An Inverse Problem for an Age-Structured Population Dynamics Model with Migration Flows

    Abstract

    An inverse problem of reconstructing a coefficient in the differential equation of a model of development for a homogeneous biological...

    A. Yu. Shcheglov, S. V. Netessov in Numerical Analysis and Applications
    Article 13 March 2024
  2. A Stage-Structured Continuous-/Discrete-Time Population Model: Persistence and Spatial Spread

    Population persistence and spatial propagation and their dependence on demography and dispersal are of great importance in spatial ecology. Many...

    Minglong Wang, Yuxiang Zhang, Qihua Huang in Bulletin of Mathematical Biology
    Article 13 October 2022
  3. On the Approximation of Physiologically Structured Population Model with a Three Stage-Structured Population Model in a Grazing System

    ACanpwonyi, Sam Carlsson, Linus great deal of ecological theory is based on simple Lotka-Volterra-type of unstructured population models in the study...
    Conference paper 2022
  4. Measure-Valued Optimal Control for Size-Structured Population Models with Diffusion

    We consider a control problem to maximize a profit from harvesting in agriculture or aquaculture, where the population is governed by size-structured...

    Article 01 March 2024
  5. A nonautonomous model for the interaction between a size-structured consumer and an unstructured resource

    In this paper, we propose and analyze a nonautonomous model that describes the dynamics of a size-structured consumer interacting with an...

    Zhuxin Ni, Qihua Huang in Journal of Mathematical Biology
    Article 28 March 2024
  6. A Lipid-Structured Model of Atherosclerosis with Macrophage Proliferation

    Atherosclerotic plaques are fatty deposits that form in the walls of major arteries and are one of the major causes of heart attacks and strokes....

    Keith L. Chambers, Michael G. Watson, Mary R. Myerscough in Bulletin of Mathematical Biology
    Article Open access 09 July 2024
  7. Numerical analysis of linearly implicit Euler method for age-structured SIS model

    In this paper, we consider a numerical threshold for a coupled age-structured SIS epidemic model. We deal with the existence, convergence and...

    Zhijie Chen, Zhanwen Yang, Daili Sheng in Journal of Applied Mathematics and Computing
    Article 30 January 2024
  8. Propagation dynamics for an age-structured population model in time-space periodic habitat

    How do environmental heterogeneity influence propagation dynamics of the age-structured invasive species? We investigate this problem by considering...

    Article 12 February 2022
  9. Threshold Dynamics for Diffusive Age-Structured Model over Unbounded Domains: Age-Dependent Death and Diffusion Rates

    The global dynamics of the typical age-structured model with age-dependent mortality and diffusion rates on unbounded domains have been established....

    Mohammadkheer AlJararha in Acta Applicandae Mathematicae
    Article 28 March 2024
  10. Dynamics of a new stage-structured population model with transient and nontransient impulsive effects in a polluted environment

    In this paper, we consider a new stage-structured population model with transient and nontransient impulsive effects in a polluted environment. By...

    Qi Quan, Wenyan Tang, ... Yuan Wang in Advances in Difference Equations
    Article Open access 23 December 2021
  11. Uniqueness of the Solution of the Inverse Problem for a Model of the Dynamics of an Age-Structured Population

    Abstract

    For the McKendrick model of the dynamics of an age-structured population, we consider the inverse problem of reconstructing two...

    A. Yu. Shcheglov in Mathematical Notes
    Article 24 February 2022
  12. A Lipid-Structured Model of Atherosclerotic Plaque Macrophages with Lipid-Dependent Kinetics

    Atherosclerotic plaques are fatty growths in artery walls that cause heart attacks and strokes. Plaque formation is driven by macrophages that are...

    Michael G. Watson, Keith L. Chambers, Mary R. Myerscough in Bulletin of Mathematical Biology
    Article Open access 15 August 2023
  13. Global stability of an age-structured population model on several temporally variable patches

    We consider an age-structured density-dependent population model on several temporally variable patches. There are two key assumptions on which we...

    Vladimir Kozlov, Sonja Radosavljevic, ... Uno Wennergren in Journal of Mathematical Biology
    Article Open access 04 December 2021
  14. Well-posedness and asynchronous exponential growth of an age-weight structured fish population model with nonautonomous past

    We study the fish population model integrating age and weight structures, introduced in E. Sánchez, M. L. Hbid, R. Bravo de la Parra. (J. Evol. Equ....

    Samir Boujijane, Said Boulite, ... Lahcen Maniar in Semigroup Forum
    Article 23 June 2022
  15. Optimal Contraception Control Problems in a Nonlinear Size-Structured Vermin Model

    This paper investigates a size-structured vermin contraception control model with nonlinear fertility and mortality, in which the control variable...

    Rong Liu, Fengqin Zhang, Yuming Chen in Journal of Optimization Theory and Applications
    Article 07 June 2023
  16. Optimal Harvesting in Age- and Size-Structured Population Models

    This paper briefly surveys age- and size- structured linear and nonlinear population models and reveals their practical meaning. It focuses on...
    N. Hritonenko, M. C. A. Leite, Y. Yatsenko in Current Trends in Analysis, its Applications and Computation
    Conference paper 2022
  17. Efficiency of Protection in the Presence of Immigration Process for an Age-Structured Epidemiological Model

    This paper studies the efficiency of protection in containing an epidemic in the case of immigration using a triple age structured model. For...

    Fatima Zohra Hathout, Tarik Mohammed Touaoula, Salih Djilali in Acta Applicandae Mathematicae
    Article 10 May 2023
  18. Resonance in Physiologically Structured Population Models

    Ecologists have long sought to understand how the dynamics of natural populations are affected by the environmental variation those populations...

    Kevin Gross, André M. de Roos in Bulletin of Mathematical Biology
    Article 21 June 2021
  19. Dynamical analysis for an age-structured model of eating disorders

    This paper investigates the diffusion of eating disorders by constructing an age-structured model with an age-dependent diffusion coefficient....

    Wenhao Dai, Hailiang Zhang in Journal of Applied Mathematics and Computing
    Article 11 November 2022
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