Results 11 to 20 of about 290 (163)

New results on periodic solutions of delayed Nicholson's blowflies models

open access: diamondElectronic Journal of Qualitative Theory of Differential Equations, 2012
This paper is concerned with a class of Nicholson's blowflies models with a nonlinear density-dependent mortality term. We use coincidence degree theory and give several sufficient conditions which guarantee the existence of positive periodic solutions ...
Xinhua Hou, Lian Duan
doaj   +3 more sources

Convergence of solutions of nonautonomous Nicholson's Blowflies model with impulses

open access: diamondCommunications Faculty Of Science University of Ankara Series A1Mathematics and Statistics, 2019
This paper deals with a nonautonomous Nicholson's blowflies model with impulses. It is shown that under the proper conditions every positive solution of the model approaches to a constant as t tends to infinity ...
Demirci, Elif, Karakoç, Fatma
core   +6 more sources

Phenotypic plasticity as a cause and consequence of population dynamics [PDF]

open access: yesEcology Letters, Volume 24, Issue 11, Page 2406-2417, November 2021., 2021
Predicting complex species-environment interactions is crucial for guiding con- servation and mitigation strategies in a dynamically changing world. Phenotypic plasticity is a mechanism of trait variation that determines how individuals and populations ...
Brass, Dominic P.   +5 more
core   +4 more sources

Global attractivity of positive periodic solution of a delayed Nicholson model with nonlinear density-dependent mortality term [PDF]

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2019
This paper is concerned with the existence, uniqueness and global attractivity of positive periodic solution of a delayed Nicholson's blowflies model with nonlinear density-dependent mortality rate.
Thai Doan, Le Van Hien, Anh Trinh
doaj   +4 more sources

New results on almost periodic solutions for a Nicholson's blowflies model with a linear harvesting term

open access: diamondElectronic Journal of Qualitative Theory of Differential Equations, 2014
In this paper, we study the global dynamic behavior of a non-autonomous delayed Nicholson's blowflies model with a linear harvesting term. Under proper conditions, we employ a novel argument to establish a criterion on the global exponential stability of
Aiping Zhang
doaj   +2 more sources

Positive periodic solutions of delayed Nicholson's blowflies model with a linear harvesting term

open access: diamondElectronic Journal of Qualitative Theory of Differential Equations, 2011
This paper is concerned with a class of Nicholson's blowflies model with a linear harvesting term. By applying the method of coincidence degree, some criteria are established for the existence and uniqueness of positive periodic solutions of the model.
Mingquan Yang, Fei Long
doaj   +2 more sources

Global dynamic behaviors for a delayed Nicholson's blowflies model with a linear harvesting term

open access: diamondElectronic Journal of Qualitative Theory of Differential Equations, 2013
In this paper, we study a generalized Nicholson's blowflies model with a linear harvesting term, which is defined on the positive function space. Under proper conditions, we employ a novel proof to establish some criteria for the global dynamic ...
Bingwen Liu
doaj   +2 more sources

Permanence and Existence of Periodic Solutions for Nicholson’s Blowflies Model with Feedback Control and Delay on Time Scales

open access: yesDiscrete Dynamics in Nature and Society, 2018
Sufficient conditions are established for the permanence in a delayed Nicholson’s blowflies model with feedback control on time scales. Our investigation confirms that the bounded feedback terms do not have any influence on the permanence of this system.
Lin-Lin Wang, Yong-Hong Fan
doaj   +2 more sources

New findings on exponential convergence of a Nicholson’s blowflies model with proportional delay [PDF]

open access: yesAdvances in Difference Equations, 2019
We deal with Nicholson’s blowflies model with proportional delays. Employing the differential inequality theory, we give a new sufficient condition that guarantees the exponential convergence of all solutions of Nicholson’s blowflies model with ...
Changjin Xu, Peiluan Li, Shuai Yuan
doaj   +2 more sources

Dynamic Behaviors of the Solutions for a Class Delay Harvesting Nicholson's Blowflies Model

open access: hybrid, 2016
In this paper, a class of nonlinear  delay harvesting Nicholson's blowflies model is considered. Some criteria to ensure the boundedness  and oscillation of the solutions for this model are provided.
Carl S. Pettis, Chunhua Feng
core   +2 more sources

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