Results 1 to 10 of about 74 (72)

Optimal control for COVID-19 pandemic with quarantine and antiviral therapy [PDF]

open access: yesSensors International, 2021
In the absence of a proper cure for the disease, the recent pandemic caused by COVID-19 has been focused on isolation strategies and government measures to control the disease, such as lockdown, media coverage, and improve public hygiene.
Md. Abdullah Bin Masud   +2 more
doaj   +2 more sources

A mathematical model of Coronavirus Disease (COVID-19) containing asymptomatic and symptomatic classes [PDF]

open access: yesResults in Physics, 2021
The research work in this paper attempts to describe the outbreak of Coronavirus Disease 2019 (COVID-19) with the help of a mathematical model using both the Ordinary Differential Equation (ODE) and Fractional Differential Equation.
Idris Ahmed   +4 more
doaj   +2 more sources

Analytical and numerical analysis of damped harmonic oscillator model with nonlocal operators

open access: yesDemonstratio Mathematica, 2023
Nonlocal operators with different kernels were used here to obtain more general harmonic oscillator models. Power law, exponential decay, and the generalized Mittag-Leffler kernels with Delta-Dirac property have been utilized in this process.
Alharthi Nadiyah Hussain   +2 more
doaj   +1 more source

Lakshmikantham Monotone Iterative Principle for Hybrid Atangana-Baleanu-Caputo Fractional Differential Equations

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2023
In this paper, we study the following fractional differential equation involving the Atangana-Baleanu-Caputo fractional derivative: {ABCaDτθ[x(ϑ)−F(ϑ,x(ϑ))]=G(ϑ,x(ϑ)),    ϑ∈J:=[a,b],x(a)=φa∈ℝ.$$\left\{ {\matrix{ {AB{C_a}D_\tau ^\theta [x(\vartheta ...
Benkhettou Nadia   +4 more
doaj   +1 more source

Minimal period problem for second-order Hamiltonian systems with asymptotically linear nonlinearities

open access: yesOpen Mathematics, 2022
By applying the combination of discrete variational method and approximation, developed in a previous study [J. Kuang, W. Chen, and Z. Guo, Periodic solutions with prescribed minimal period for second-order even Hamiltonian systems, Commun.
Kuang Juhong, Chen Weiyi
doaj   +1 more source

On the existence of nonnegative radial solutions for Dirichlet exterior problems on the Heisenberg group

open access: yesDemonstratio Mathematica, 2023
We investigate the existence and nonexistence of nonnegative radial solutions to exterior problems of the form ΔHmu(q)+λψ(q)K(r(q))f(r2−Q(q),u(q))=0{\Delta }_{{{\mathbb{H}}}^{m}}u\left(q)+\lambda \psi \left(q)K\left(r\left(q))f\left({r}^{2-Q}\left(q),u ...
Jleli Mohamed
doaj   +1 more source

Role of ecotourism in conserving forest biomass: A mathematical model

open access: yesComputational and Mathematical Biophysics, 2023
Ecotourism is a form of tourism involving responsible travel to natural areas, conserving the environment, and improving the well-being of the local people.
Pathak Rachana   +6 more
doaj   +1 more source

A modified Picone-type identity and the uniqueness of positive symmetric solutions for a prescribed mean curvature problem

open access: yesAdvanced Nonlinear Studies, 2023
In this article, we study the uniqueness of positive symmetric solutions of the following mean curvature problem in Euclidean space: (P)u′1+∣u′∣2′+h(x)f(u)=0 ...
Lee Yong-Hoon, Yang Rui
doaj   +1 more source

Existence results to a ψ- Hilfer neutral fractional evolution equation with infinite delay

open access: yesNonautonomous Dynamical Systems, 2021
In this paper, we prove the existence and uniqueness of a mild solution to the system of ψ- Hilfer neutral fractional evolution equations with infinite delay H𝔻0αβ;ψ [x(t) − h(t, xt)] = A x(t) + f (t, x(t), xt), t ∈ [0, b], b > 0 and x(t) = ϕ(t), t ∈ (−∞,
Norouzi Fatemeh   +1 more
doaj   +1 more source

Coupled measure of noncompactness and functional integral equations

open access: yesOpen Mathematics, 2022
The aim of this article is to study the results of the fixed-point in coupled and tripled measure of noncompactness (MNC). We will use the technique of MNC for coupled and tripled MNC.
Hosseinzadeh Hasan   +3 more
doaj   +1 more source

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