Results 41 to 50 of about 290 (163)

Forty years of applied mathematical modelling: A bibliometric study [PDF]

open access: yes, 2021
The Journal of Applied Mathematical Modelling (AMM) is a leading international journal in the field of mathematics and engineering focused on research related to mathematical modelling of engineering and environmental processes, manufacturing, and ...
Blanco-Mesa   +30 more
core   +1 more source

Oscillation in a discrete partial delay Nicholson's Blowflies Model

open access: yesMathematical and Computer Modelling, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
B.G. Zhang, S.H. Saker
core   +2 more sources

Dynamics in a Competitive Nicholson’s Blowflies Model with Continuous Time Delays

open access: yesSymmetry, 2023
In this study, we examine a competitive Nicholson blowflies model with time-varying coefficients and continuous time delays. In the case of coincidence degree theory, constructing appropriate Lyapunov functionals and using several inequalities, several conditions on the extinction, periodic solution, permanence, and global attractiveness of the system ...
Zhiqiao Wu, Ahmadjan Muhammadhaji
openaire   +1 more source

Lyapunov stability analysis for nonlinear delay systems under random effects and stochastic perturbations with applications in finance and ecology

open access: yesAdvances in Difference Equations, 2021
This manuscript is involved in the study of stability of the solutions of functional differential equations (FDEs) with random coefficients and/or stochastic terms.
Abdulwahab Almutairi   +3 more
doaj   +1 more source

New results on global asymptotic stability for a nonlinear density-dependent mortality Nicholson’s blowflies model with multiple pairs of time-varying delays

open access: yesJournal of Inequalities and Applications, 2020
This paper is concerned with a class of Nicholson’s blowflies model involving nonlinear density-dependent mortality terms and multiple pairs of time-varying delays.
Qian Cao   +3 more
doaj   +1 more source

Aspects of non-linear time series analysis [PDF]

open access: yes, 2022
Some difficulties of non-linear time series modelling are discussed. The importance of likelihood plots and information matrix calculation is demonstrated. A constructive use of reparametrization is illustrated. Possible non-invertibility of two bilinear
Moeanaddin, Rahim
core   +1 more source

Analysis of Stochastic Nicholson‐Type Delay System under Markovian Switching on Patches

open access: yesComplexity, Volume 2020, Issue 1, 2020., 2020
Based on the influence of random environmental perturbations and the patch structure, we propose a stochastic Nicholson‐type delay system under Markovian switching on patches. Existence of a global positive solution is studied. Then, we show ultimate boundedness and estimation of the sample Lyapunov exponent of the solution.
Xin Yi   +2 more
wiley   +1 more source

The stability and Hopf bifurcation of the diffusive Nicholson’s blowflies model in spatially heterogeneous environment [PDF]

open access: yesZeitschrift für angewandte Mathematik und Physik, 2021
In this paper, we consider the diffusive Nicholson's blowflies model in spatially heterogeneous environment when the diffusion rate is large. We show that the ratio of the average of the maximum per capita egg production rate to that of the death rate affects the dynamics of the model.
Dan Huang, Shanshan Chen
openaire   +2 more sources

sPop: Age-structured discrete-time population dynamics model in C, Python, and R [version 1; referees: 2 approved] [PDF]

open access: yes, 2018
This article describes the sPop packages implementing the deterministic and stochastic versions of an age-structured discrete-time population dynamics model.
Kamil Erguler
core   +1 more source

On the Stability and Uniform Persistence of a Discrete Model of Nicholson′s Blowflies

open access: yesJournal of Mathematical Analysis and Applications, 1995
The authors study the behaviour of nonnegative solutions to the difference equation \[ N_{k+ 1}- N_k= - \delta N_k+ pN_{k- i} e^{- aN_{k- i}},\tag{1} \] where \(k\in \mathbb{N}\cup 0\), \(N_i\geq 0\), \(\delta\), \(a\), \(p\) are positive constants. This equation is the discrete analogue of some delay differential equation used to model the dynamics of
So, J.W.H., Yu, J.S.
openaire   +1 more source

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