Results 31 to 40 of about 487 (130)

A primer on stochastic epidemic models: Formulation, numerical simulation, and analysis

open access: yesInfectious Disease Modelling, 2017
Some mathematical methods for formulation and numerical simulation of stochastic epidemic models are presented. Specifically, models are formulated for continuous-time Markov chains and stochastic differential equations. Some well-known examples are used
Linda J.S. Allen
doaj   +1 more source

Existence and uniqueness of periodic orbits in a discrete model on Wolbachia infection frequency

open access: yesAdvances in Nonlinear Analysis, 2021
In this paper, we study a discrete model on Wolbachia infection frequency. Assume that a periodic and impulsive release strategy is implemented, where infected males are released during the first N generations with the release ratio α, and the release is
Zheng Bo, Yu Jianshe
doaj   +1 more source

Determination in Galicia of the required beds at Intensive Care Units

open access: yesAlexandria Engineering Journal, 2021
By using a recent mathematical compartmental model that includes the super-spreader class and developed by Ndaïrou, Area, Nieto, and Torres, a procedure to estimate in advance the number of required beds at intensive care units is presented.
Iván Area   +3 more
doaj   +1 more source

Dynamical, Stability, and Bifurcation of a Viral Model With General Cell‐to‐Cell Incidence Rate and Delayed Saturated CTL Immunity

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2025, Issue 1, 2025.
In this paper, we propose a viral model with cell‐to‐cell propagation, delayed saturated CTL immunity, and general incidence rate. Two biological threshold parameters, namely, the basic reproductive number R0 and the CTL immune reproductive number R1, are derived.
Mouhcine Naim   +4 more
wiley   +1 more source

Bayesian Inference for SIR Epidemic Model with dependent parameters

open access: yesMoroccan Journal of Pure and Applied Analysis, 2022
This paper is concerned with the Bayesian inference for the dependent parameters of stochastic SIR epidemic model in a closed population. The estimation framework involves the introduction of m − 1 latent data between every pair of observations. Kibble’s
Qaffou Abdelaziz   +2 more
doaj   +1 more source

The effect of changing COVID-19 restrictions on the transmission rate in a veterinary clinic

open access: yesInfectious Disease Modelling, 2023
With the declaration of the COVID-19 pandemic by the World Health Organization on March 11, 2020, the University of Tennessee College of Veterinary Medicine (UTCVM), like other institutions, restructured their services to reduce the potential spread of ...
Lee Spence   +6 more
doaj   +1 more source

Coastal fisheries adaptations to increasing climate change exposure in Japan

open access: yesPeople and Nature, Volume 6, Issue 6, Page 2339-2356, December 2024.
Abstract Climate change‐driven ocean warming is altering the geographic ranges of species, leading to a poleward shift of tropical species into temperate regions (tropicalisation). This threatens the native marine community assemblages by changing the availability of traditional marine resources, thus impacting the livelihood and well‐being of coastal ...
Xochitl Édua Elías Ilosvay   +3 more
wiley   +1 more source

Regression to the mean in regression discontinuity design: bias and sensitivity analysis

open access: yesJournal of Causal Inference
When making causal inferences from observational data, researchers must consider the effects of confounding. In a regression discontinuity design (RDD), individuals receive a treatment based on whether they score below or above a threshold value measured
Karmakar Bikram
doaj   +1 more source

Are the upper bounds for new SARS-CoV-2 infections in Germany useful?

open access: yesComputational and Mathematical Biophysics, 2021
At the end of 2019, an outbreak of a new coronavirus, called SARS–CoV–2, was reported in China and later in other parts of the world. First infection reported in Germany by the end of January 2020 and on March 16th, 2020 the federal government announced ...
Bock Wolfgang   +3 more
doaj   +1 more source

Curtailing the spread of drug-abuse and violence co-menace: An optimal control approach

open access: yesAlexandria Engineering Journal, 2022
This work presents an optimal control of intervention strategies for a drug abuse and violence co-menace model considering a mass campaign against drug abuse, a mass campaign against violence, effective policing and rehabilitation of drug-abusing and ...
Abdulfatai Atte Momoh   +3 more
doaj   +1 more source

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