Results 11 to 20 of about 5,356 (162)

On Using Piecewise Fractional Differential Operator to Study a Dynamical System

open access: yesAxioms, 2023
This research work is devoted to undertaking a dynamical system representing SARS-CoV-19 disease under the concept of piecewise fractional-order derivative using the Caputo concept since long-memory and short-memory terms are not well explained by ...
Shahid Khan   +3 more
doaj   +1 more source

Strain gage balance signal filtering with piecewise representations [PDF]

open access: yesINCAS Bulletin, 2019
Strain gage balances provide the most important output of the supersonic wind tunnels. Typically, the time histories of the six forces/moments components must be filtered out, to provide useful results for performance assessment of the models.
Mihai Victor PRICOP   +3 more
doaj   +1 more source

Analysis of Nonlinear Mathematical Model of COVID-19 via Fractional-Order Piecewise Derivative

open access: yesChaos Theory and Applications, 2023
Short memory and long memory terms are excellently explained using the concept of piecewise fractional order derivatives. In this research work, we investigate dynamical systems addressing COVID-19 under piecewise equations with fractional order ...
Thabet Abdeljawad   +3 more
doaj   +3 more sources

The dynamics of the HIV/AIDS infection in the framework of piecewise fractional differential equation

open access: yesResults in Physics, 2022
We study the HIV/AIDS infection dynamics using the new concept of piecewise fractional differential equations in the sense of Atangana–Baleanu derivative.
Yi Zhao   +5 more
doaj   +1 more source

Ulam-Type Stability Results for Variable Order Ψ-Tempered Caputo Fractional Differential Equations

open access: yesFractal and Fractional, 2023
An initial value problem for nonlinear fractional differential equations with a tempered Caputo fractional derivative of variable order with respect to another function is studied.
Donal O’Regan   +2 more
doaj   +1 more source

Crossover behaviors via piecewise concept: A model of tumor growth and its response to radiotherapy

open access: yesResults in Physics, 2022
This study aims to combine 3 different models, which take into account the pre-treatment, during the treatment and post-treatment processes of the tumor growth, with the piecewise derivative, and to consider these processes as a whole thanks to this new ...
İrem Akbulut Arık, Seda İğret Araz
doaj   +1 more source

Piecewise Linear Continuation: Derivative-free Manifold Generation

open access: yes, 2023
Abstract We describe the Piecewise Linear Continuation algorithm Allgower and Georg (2000) for finding solutions of a set of nonlinear equations that depend on k parameters Allgower and Schmidt (1985). Unlike predictor–corrector continuation, the algorithm does not require the derivatives of the system; so is perfectly suited for applications ...
Michael E Henderson, Robert Melville
openaire   +1 more source

Dynamical Analysis of Rubella Disease Model in the Context of Fractional Piecewise Derivative: Simulations with Real Statistical Data

open access: yesFractal and Fractional, 2023
Rubella is a viral disease that can lead to severe health complications, especially in pregnant women and their unborn babies. Understanding the dynamics of the Rubella disease model is crucial for developing effective strategies to control its spread ...
Badr Saad T. Alkahtani
doaj   +1 more source

Existence and Stability Results for Piecewise Caputo–Fabrizio Fractional Differential Equations with Mixed Delays

open access: yesFractal and Fractional, 2023
In this article, by using the differential Caputo–Fabrizio operator, we suggest a novel family of piecewise differential equations (DEs). The issue under study contains a mixed delay period under the criteria of anti-periodic boundaries.
Doha A. Kattan, Hasanen A. Hammad
doaj   +1 more source

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