Results 51 to 60 of about 39,047,150 (349)
A simple SIR model with a large set of asymptomatic infectives [PDF]
Mathematics in Engineering, 2020 There is increasing evidence that one of the most difficult problems in trying to control the ongoing COVID-19 epidemic is the presence of a large cohort of asymptomatic infectives.
G. Gaeta
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Lyapunov functions for SIR and SIRS epidemic models
Applied Mathematics Letters, 2010 The authors consider the planar system \[ \begin{aligned} {dI\over dt} &= (q-\beta I-\beta R)I,\\ {dR\over dt} &= \gamma I-\omega R\end{aligned}\tag{\(*\)} \] related to epidemic models. Let \(Q_*= (I_*, R_*)\) be a positive equilibrium of \((*)\). It is shown that \[ U(I,R):= I- I_*\ln I+ a(R- R_*)^2 \] with \(a:= \beta/2\gamma> 0\) is a Lyapunov ...
Suzanne M. O'Regan +4 more
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Axioms, 2021 This work proposes an interval-based uncertain Susceptible–Infected–Recovered (SIR) epidemic model. The interval model has been numerically solved by the homotopy analysis method (HAM).
Emmanuel A. Bakare +2 more
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Journal of the Georgia Public Health Association, 2022 Background: We investigate epidemiological models, their parameters, and the models’ predictive performance of daily new cases during the first three weeks of the SARS-CoV-2 outbreak in a southwest Georgia hotspot.
Daniel F. Linder +6 more
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A Fractional-Order Infectivity and Recovery SIR Model
Fractal and Fractional, 2017 The introduction of fractional-order derivatives to epidemiological compartment models, such as SIR models, has attracted much attention. When this introduction is done in an ad hoc manner, it is difficult to reconcile parameters in the resulting ...
Christopher N. Angstmann +2 more
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Journal of Computing Research and Innovation, 2022 In late 2019, the unique severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), also known as COVID-19, first emerged in Wuhan City, Hubei Province, China and quickly spread throughout the world. Until June 30, 2022, a total of 4,566,055 cases of
Yeong Kin Teoh +4 more
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An adaptive social distancing SIR model for COVID-19 disease spreading and forecasting
, 2021 Recently, various mathematical models have been proposed to model COVID-19 outbreak. These models are an effective tool to study the mechanisms of coronavirus spreading and to predict the future course of COVID-19 disease.
S. Gounane +5 more
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Traveling Waves in Spatial SIRS Models [PDF]
Journal of Dynamics and Differential Equations, 2014 We study traveling wavefront solutions for two reaction-diffusion systems, which are derived respectively as diffusion approximations to two nonlocal spatial SIRS models. These solutions characterize the propagating progress and speed of the spatial spread of underlying epidemic waves.
Ai, Shangbing, Albashaireh, Reem
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Propagation Analysis of COVID-19: An SIR Model-Based Investigation of the Pandemic
The Arabian journal for science and engineering, 2021 The paper investigates the spread pattern and dynamics of Covid-19 propagation based on SIR model. Using the model dynamics, an analytical estimation has been obtained for virus span, its longevity, growing pattern, etc.
Rahul Saxena, Mahipal Jadeja, V. Bhateja
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On a stochastic SIR model [PDF]
Applicationes Mathematicae, 2007 n ...
Tornatore, Elisabetta +1 more
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