Results 11 to 20 of about 570,641 (287)

Fractional SIR epidemiological models [PDF]

Scientific Reports, 2020
Abstract The purpose of this work is to make a case for epidemiological models with fractional exponent in the contribution of sub-populations to the incidence rate. More specifically, we question the standard assumption in the literature on epidemiological models, where the incidence rate dictating propagation of infections is taken ...
Taghvaei, Amirhossein, Georgiou, Tryphon T., Norton, Larry, Tannenbaum, Allen R   +3 more
openaire   +8 more sources

Inhomogeneities in Boltzmann–SIR models

Mathematics and Mechanics of Complex Systems, 2021
We investigate, by means of numerical simulations, the qualitative properties of a Boltzmann equation for three species of particles introduced in previous work, capturing some features of epidemic spread.
alessandro ciallella, mario pulvirenti, sergio simonella   +2 more
openaire   +3 more sources

SIR Model with Vaccination: Bifurcation Analysis

Qualitative Theory of Dynamical Systems, 2023
AbstractThere are few adapted SIR models in the literature that combine vaccination and logistic growth. In this article, we study bifurcations of a SIR model where the class of Susceptible individuals grows logistically and has been subject to constant vaccination.
João P. S. Maurício de Carvalho, Alexandre A. Rodrigues   +1 more
openaire   +4 more sources

On the Integrability of the SIR Epidemic Model with Vital Dynamics

Advances in Mathematical Physics, 2020
In this paper, we study the SIR epidemic model with vital dynamics Ṡ=−βSI+μN−S,İ=βSI−γ+μI,Ṙ=γI−μR, from the point of view of integrability. In the case of the death/birth rate μ=0, the SIR model is integrable, and we provide its general solutions by ...
Ding Chen
doaj   +1 more source

Urinary levels of dimethoate, bisphenol A and benzo[a]pyrene in first-year students of Hohai University from different geographical regions

BMC Public Health, 2021
Background The objective of this study was to detect the urinary levels of dimethoate, benzo(a) pyrene (BaP), and bisphenol A (BPA) in first-year Hohai University students with different geographic origins.
Yu-Juan Xu, Hong-Liang Gao, He Liu, Ning-Wei Zhao, Qi Cheng, Fu-Rong Zhang, Juan Ye, Ai-Qing Wang, Yan-Jun Dou, Bei Ma, Feng Zhu, Xian-Lin Xu, Chao-Jun Li, Jing Wu, Ning Shen, Bin Xue   +15 more
doaj   +1 more source

Epidemiological models, parameters, and prediction of the COVID-19 outbreak in a southwest Georgia hotspot

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, William M. Sewell III, Jack D. Owens, Jim Franklin, Mark Miller, Casey Newton, Priyank Shah   +6 more
doaj   +1 more source

Tracking the early depleting transmission dynamics of COVID-19 with a time-varying SIR model

Scientific Reports, 2020
The susceptible-infectious-removed (SIR) model offers the simplest framework to study transmission dynamics of COVID-19, however, it does not factor in its early depleting trend observed during a lockdown.
Kian Boon Law, Kalaiarasu M. Peariasamy, Balvinder Singh Gill, Sarbhan Singh, Bala Murali Sundram, Kamesh Rajendran, Sarat Chandra Dass, Yi Lin Lee, Pik Pin Goh, Hishamshah Ibrahim, Noor Hisham Abdullah   +10 more
doaj   +1 more source

Numerical Solution of an Interval-Based Uncertain SIR (Susceptible–Infected–Recovered) Epidemic Model by Homotopy Analysis Method

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, Snehashish Chakraverty, Radovan Potucek   +2 more
doaj   +1 more source

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
openaire   +2 more sources

Spread of Infectious Diseases with a Latent Period [PDF]

, 2015
Infectious diseases spread through human networks. Susceptible-Infected-Removed (SIR) model is one of the epidemic models to describe infection dynamics on a complex network connecting individuals.
D Anderson, I Schwartz, J Ma, JM Hyman, MJ Keeling, PC Cross, RM Anderson, V Colizza   +7 more
core   +1 more source