Results 1 to 10 of about 3,164,846 (174)

A fractional-order model for the novel coronavirus (COVID-19) outbreak. [PDF]

open access: yesNonlinear Dyn, 2020
The outbreak of the novel coronavirus (COVID-19), which was firstly reported in China, has affected many countries worldwide. To understand and predict the transmission dynamics of this disease, mathematical models can be very effective.
Rajagopal K   +5 more
europepmc   +4 more sources

Fractional Order Sliding Mode Control of Quadrotor Based on Fractional Order Model

open access: yesIEEE Access, 2023
Quadrotor systems are becoming increasingly popular in various applications due to their maneuverability and versatility. Controlling these systems accurately is crucial to ensure stability and safety.
Abdul-Wahid A. Saif   +3 more
doaj   +2 more sources

A fractional-order model with different strains of COVID-19. [PDF]

open access: yesPhysica A, 2022
This study examines the dynamics of COVID-19 variants using a Caputo–Fabrizio fractional order model. The reproduction ratio R0 and equilibrium solutions are determined.
Baba IA, Rihan FA.
europepmc   +2 more sources

Analysis of fractional order model on higher institution students' anxiety towards mathematics with optimal control theory. [PDF]

open access: yesSci Rep, 2023
Anxiety towards mathematics is the most common problem throughout nations in the world. In this study, we have mainly formulated and analyzed a Caputo fractional order mathematical model with optimal control strategies on higher institution students ...
Teklu SW.
europepmc   +2 more sources

A fractional-order model describing the dynamics of the novel coronavirus (COVID-19) with nonsingular kernel. [PDF]

open access: yesChaos Solitons Fractals, 2021
In this paper, we investigate an epidemic model of the novel coronavirus disease or COVID-19 using the Caputo–Fabrizio derivative. We discuss the existence and uniqueness of solution for the model under consideration, by using the the Picard–Lindelöf ...
Boudaoui A   +3 more
europepmc   +2 more sources

A Caputo-Fabrizio Fractional-Order Model of HIV/AIDS with a Treatment Compartment: Sensitivity Analysis and Optimal Control Strategies. [PDF]

open access: yesEntropy (Basel), 2021
Although most of the early research studies on fractional-order systems were based on the Caputo or Riemann–Liouville fractional-order derivatives, it has recently been proven that these methods have some drawbacks. For instance, kernels of these methods
Wang H   +5 more
europepmc   +2 more sources

A Caputo (discretization) fractional-order model of glucose-insulin interaction: numerical solution and comparisons with experimental data

open access: yesJournal of Taibah University for Science, 2021
In this paper, we investigate a (discretization) Caputo fractional glucose-insulin model qualitatively with incommensurate orders that appear in Bergman's minimal model.
Mansoor H. Alshehri   +3 more
doaj   +2 more sources

Analysis of Caputo fractional-order model for COVID-19 with lockdown. [PDF]

open access: yesAdv Differ Equ, 2020
One of the control measures available that are believed to be the most reliable methods of curbing the spread of coronavirus at the moment if they were to be successfully applied is lockdown.
Ahmed I   +4 more
europepmc   +2 more sources

Optimal control of a fractional order model for granular SEIR epidemic with uncertainty. [PDF]

open access: yesCommun Nonlinear Sci Numer Simul, 2020
Highlights • Optimal control problem governed by fuzzy fractional differential systems.• Granular SIR and SEIR epidemic models are introduced.• A Numerical Scheme to Solve Fractional Optimal Control Problems.• An application of real data extracted from ...
Dong NP, Long HV, Khastan A.
europepmc   +2 more sources

Integer and fractional order models for rabies: a theoretical approach [PDF]

open access: yesMathematics and Computational Sciences, 2022
The rabies virus usually transmits either from animal to man or animal to animal or human to human as the case may be but the major transmitters of the virus are dogs globally. In this work, an integer order SEIR epidemic model was formulated to quantify
Abayomi Ayoade
doaj   +1 more source

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