Results 31 to 40 of about 39,047,150 (349)

The rhythmic coupling of Egr-1 and Cidea regulates age-related metabolic dysfunction in the liver of male mice

open access: yesNature Communications, 2023
The liver lipid metabolism of older individuals canbecome impaired and the circadian rhythm of genes involved in lipid metabolism is also disturbed. Although the link between metabolism and circadian rhythms is already recognized, how these processes are
Jing Wu   +12 more
doaj   +1 more source

Estimation of COVID-19 dynamics “on a back-of-envelope”: Does the simplest SIR model provide quantitative parameters and predictions?

open access: yesChaos, Solitons & Fractals, 2020
Highlights • COVID-19.• SIR-model reducible to logistic regression.• Forecast uncertainty quantification.• Revealing effect of epidemic prevention measures.
E. Postnikov
semanticscholar   +1 more source

A comparative study of SIR Model, Linear Regression, Logistic Function and ARIMA Model for forecasting COVID-19 cases

open access: yesmedRxiv, 2021
Starting February 2020, COVID-19 was confirmed in 11,946 people worldwide, with a mortality rate of almost 2%. A significant number of epidemic diseases including human Coronavirus display patterns.
S. Abolmaali, S. Shirzaei
semanticscholar   +1 more source

Analysis of A Coendemic Model of COVID-19 and Dengue Disease

open access: yesCommunication in Biomathematical Sciences, 2021
The coronavirus disease 2019 (COVID-19) pandemic continues to spread aggressively worldwide, infecting more than 170 million people with confirmed cases, including more than 3 million deaths.
Hilda Fahlena   +5 more
doaj   +1 more source

Explicit formulae for the peak time of an epidemic from the SIR model

open access: yesPhysica A: Statistical Mechanics and its Applications, 2021
Reducing the peak time of an epidemic disease in order for slowing down the eventual dynamics and getting prepared for the unavoidable epidemic wave is utmost significant to fight against the risks of a contagious epidemic disease.
M. Turkyilmazoglu
semanticscholar   +1 more source

Analytical solution of the SIR-model for the temporal evolution of epidemics. Part A: time-independent reproduction factor

open access: yesJournal of Physics A: Mathematical and Theoretical, 2020
We revisit the susceptible-infectious-recovered/removed (SIR) model which is one of the simplest compartmental models. Many epidemological models are derivatives of this basic form.
M. Kröger, R. Schlickeiser
semanticscholar   +1 more source

Integrable discretizations of the SIR model

open access: yesCoRR, 2022
31 pages, 8 ...
Yuta Tanaka, Ken-ichi Maruno
openaire   +4 more sources

Analytical features of the SIR model and their applications to COVID-19

open access: yesApplied Mathematical Modelling, 2020
Highlights • A new approach to analysis of the infection expansion based on first integrals of the mathematical model.• Painlevé analysis of the classic two-parameter SIR-model.• The new general analytical solution of the model, structurally featured ...
N. Kudryashov   +2 more
semanticscholar   +1 more source

Explicit formulae for the peak time of an epidemic from the SIR model. Which approximant to use?

open access: yesPhysica A: Statistical Mechanics and its Applications, 2021
An analytic evaluation of the peak time of a disease allows for the installment of effective epidemic precautions. Recently, an explicit analytic, approximate expression (MT) for the peak time of the fraction of infected persons during an outbreak within
M. Kröger   +2 more
semanticscholar   +1 more source

On a class of nonlocal SIR models [PDF]

open access: yesJournal of Mathematical Biology, 2019
We revisit the classic susceptible-infected-recovered (SIR) epidemic model and one of its recently developed nonlocal variations. We introduce several new approaches to derive exact analytical solutions in the classical situation and analyze the corresponding effective approximations in the nonlocal setting.
Li Guan, Dong Li, Ke Wang, Kun Zhao
openaire   +3 more sources

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