Results 71 to 80 of about 290 (163)

Global population dynamics of a single species structured with distinctive time-varying maturation and self-limitation delays

open access: yes, 2022
<p style='text-indent:20px;'>We consider the classical Nicholson's blowflies model incorporating two distinctive time-varying delays. One of the delays corresponds to the length of the individual's life cycle, and another corresponds to the ...
Chuangxia Huang   +2 more
core   +1 more source

Almost periodic solution of a discrete Nicholson’s blowflies model with delay and feedback control [PDF]

open access: yesAdvances in Difference Equations, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chen, Xiaoying   +2 more
openaire   +1 more source

Quantitative and qualitative dynamics of exotic and native blowflies (Diptera: Calliphoridae) with migrations among municipalities [PDF]

open access: yes, 2013
The population dynamics of blowflies (Diptera: Calliphoridae) has been investigated in studies combining different mathematical formalisms, with estimates of demographic parameters and spatial models. However, these applications are limited to laboratory
Coutinho, R. M.   +4 more
core  

On positive periodic solution for the delay Nicholson’s blowflies model with a harvesting term

open access: yesApplied Mathematical Modelling, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhao, Weirui   +2 more
openaire   +2 more sources

Про перманентність дискретної системи хижак-жертва з монотонною функцією впливу [PDF]

open access: yes
У роботі розглянуто систему рівнянь, яка є дискретним аналогом моделі хижак-жертва з монотонною функцією впливу та нескінченним запізненням. Досліджується проблема побудови умов перманентної поведінки динамічної моделі.
Lisovska, Valentina Petrivna   +3 more
core   +1 more source

Positive T-periodic solutions of a generalized Nicholson's blowflies model with a nonlinear harvesting term with delay [PDF]

open access: yes, 2013
In the article of L. Berezansky raises the following open problem: give sufficient conditions for the existence of a T-periodic positive solution for the Generalized Nicholson Model with a nonlinear Harvesting term. Recently, F.
Amster, Pablo Gustavo   +1 more
core  

A note on permanence for a Nicholson's blowflies model with delay

open access: yes, 2019
Summary: In this work, we establish conditions to guarantee the permanence of the solution of the Nicholson's blowflies model with delay \[ \begin{cases} x'(t)=-\delta(t)x(t)+R(t)x(t-\tau(t))\exp[-a(t)x(t-\tau(t))],\quad t>0,\\ x(t)=\varphi(t),\quad t\in[-r,0], \end{cases} \] where \(R,\tau:\mathbb{R}\to[0,\infty)\) are bounded continuous functions ...
Afonso, S. M., De Souza, C. S.
openaire   +2 more sources

Traveling wavefronts for time-delayed reaction–diffusion equation: (I) Local nonlinearity [PDF]

open access: yes, 2009
In this paper, we study a class of time-delayed reaction–diffusion equation with local nonlinearity for the birth rate. For all wavefronts with the speed c>c∗, where c∗>0 is the critical wave speed, we prove that these wavefronts are asymptotically ...
Lin, Chi-Kun   +3 more
core   +1 more source

Data-based Mechanistic Modelling (DBM) of Nonlinear Environmental Systems. [PDF]

open access: yes, 1999
The main focus of the research studies presented in this thesis centre on the application and development of data-based mechanistic (DBM) transfer function models for nonlinear environmental systems. The data-based mechanistic modelling approach exploits
Fawcett, Christopher P
core  

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