Results 11 to 20 of about 554 (129)
Optimal control for COVID-19 pandemic with quarantine and antiviral therapy. [PDF]
Sens Int, 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.
Masud MAB, Ahmed M, Rahman MH.
europepmc +2 more sources
A mathematical model of Coronavirus Disease (COVID-19) containing asymptomatic and symptomatic classes. [PDF]
Results Phys, 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.
Ahmed I +4 more
europepmc +2 more sources
Differential Equations & Applications, 2023 . In this paper, we investigate the existence of global e -positive mild solutions to the initial value problem for a nonlinear impulsive fractional evolution differential equation involving the theory of sectorial operators.
J. F. Junior +2 more
semanticscholar +1 more source
Analytical and numerical analysis of damped harmonic oscillator model with nonlocal operators
Demonstratio 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
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Miskolc Mathematical Notes, 2022 . In this paper, we study the existence of a non-trivial solution in W 1 , p ( x ) 0 ( Ω ) for the problem (cid:40) ∆ p ( x ) u = f ( x , u , ∇ u ) in Ω , u = 0 in Ω . The proof is based on Schaefer’s fixed point theorem.
S. Ayadi, Ozgur Ege
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Modified Van der Pol-Helmholtz oscillator equation with exact harmonic solutions
, 2022 In this paper, we present an exceptional Lienard equation consisting of a modified Van der Pol-Helmholtz oscillator equation. The equation, a frequency-dependent damping oscillator, does not satisfy the classical existence theorems but, nevertheless ...
Abdou Raimi Olagnika Akplogan +4 more
semanticscholar +1 more source
Role of ecotourism in conserving forest biomass: A mathematical model
Computational 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
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Advanced 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
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Open 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
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Demonstratio 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
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