Results 11 to 20 of about 139 (42)

Yellow virus epidemiological analysis in red chili plants using Mittag-Leffler kernel

open access: yesAlexandria Engineering Journal, 2023
This scientific study investigates to check the dynamical behavior of yellow virus in red chilli with fractional order techniques. While attempts are being made to stop the yellow virus pandemic, a more infectious yellow virus found in red chilli is ...
Muhammad Farman   +8 more
doaj  

Numerical bifurcation analysis of a class of nonlinear renewal equations [PDF]

open access: yes, 2016
We show, by way of an example, that numerical bifurcation tools for ODE yield reliable bifurcation diagrams when applied to the pseudospectral approximation of a one-parameter family of nonlinear renewal equations.
Breda, Dimitri   +3 more
core   +1 more source

Positivity preservation of implicit discretizations of the advection equation [PDF]

open access: yes, 2021
We analyze, from the viewpoint of positivity preservation, certain discretizations of a fundamental partial differential equation, the one-dimensional advection equation with periodic boundary condition.
Hadjimichael, Yiannis   +2 more
core   +1 more source

A new adaptive nonlinear numerical method for singular and stiff differential problems

open access: yesAlexandria Engineering Journal, 2023
In this work, a new adaptive numerical method is proposed for solving nonlinear, singular, and stiff initial value problems often encountered in real life.
Sania Qureshi   +6 more
doaj  

Equations with infinite delay : Numerical bifurcation analysis via pseudospectral discretization [PDF]

open access: yes, 2018
We address the problem of the numerical bifurcation analysis of general nonlinear delay equations, including integral and integro-differential equations, for which no software is currently available.
Gyllenberg, Mats   +2 more
core   +2 more sources

Fractional mathematical modeling of the Stuxnet virus along with an optimal control problem

open access: yesAin Shams Engineering Journal, 2023
In this digital, internet-based world, it is not new to face cyber attacks from time to time. A number of heavy viruses have been made by hackers, and they have successfully given big losses to our systems.
Pushpendra Kumar   +4 more
doaj  

Theoretical Simulation on a Nonlinear Photonics Process of Er(1%)Yb(8%):FOV Oxyfluoride Nanophase Vitroceramics

open access: yes, 2009
We numerically simulate a photonics phenomenon of what we call intensity inversion between red and green fluorescence in oxyfluoride nanophase vitroceramics Er(1%)Yb(8%):FOV through the integration of whole fluorescence’s theories.
Ce Wang, Xiao-bo Chen
semanticscholar   +1 more source

Computing the eigenvalues of realistic Daphnia models by pseudospectral methods [PDF]

open access: yes, 2015
This work deals with physiologically structured populations of the Daphnia type. Their biological modeling poses several computational challenges. In such models, indeed, the evolution of a size structured consumer described by a Volterra functional ...
Breda, Dimitri   +3 more
core   +3 more sources

Numerical periodic normalization for codim 2 bifurcations of limit cycles : computational formulas, numerical implementation, and examples [PDF]

open access: yes, 2013
Explicit computational formulas for the coefficients of the periodic normal forms for codimension 2 (codim 2) bifurcations of limit cycles in generic autonomous ODEs are derived.
De Witte, Virginie   +3 more
core   +1 more source

The Essential Stability of Local Error Control for Dynamical Systems [PDF]

open access: yes, 1995
Although most adaptive software for initial value problems is designed with an accuracy requirement—control of the local error—it is frequently observed that stability is imparted by the adaptation.
Humphries, A. R., Stuart, A. M.
core   +1 more source

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