Results 41 to 50 of about 529 (153)

The Dynamics of an HIV/AIDS Model with Screened Disease Carriers

Computational and Mathematical Methods in Medicine, Volume 10, Issue 4, Page 287-305, 2009., 2009
The presence of carriers usually complicates the dynamics and prevention of a disease. They are not recognized as disease cases themselves unless they are screened and they usually spread the infection without them being aware. We argue that this has been one of the major causes of the spread of human immunodeficiency virus (HIV).
S. D. Hove-Musekwa, F. Nyabadza
wiley   +1 more source

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

Infectious 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

Effect of Vaccination to COVID-19 Disease Progression and Herd Immunity

Computational and Mathematical Biophysics, 2021
A mathematical model of COVID-19 with a delay-term for the vaccinated compartment is developed. It has parameters accounting for vaccine-induced immunity delay, vaccine effectiveness, vaccination rate, and vaccine-induced immunity duration.
Caga-anan Randy L., Raza Michelle N., Labrador Grace Shelda G., Metillo Ephrime B., Castillo Pierre del, Mammeri Youcef   +5 more
doaj   +1 more source

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

Infectious 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, David E. Anderson, Ibrahim Halil Aslan, Mahir Demir, Chika C. Okafor, Marcy Souza, Suzanne Lenhart   +6 more
doaj   +1 more source

Mathematical Models for the Prevention and Management of Cereal Crop Diseases: A Systematic Review

Journal of Applied Mathematics, Volume 2026, Issue 1, 2026.
Mathematical modeling plays an important role in understanding and managing diseases that threaten cereal crop production worldwide. This systematic review, conducted in accordance with PRISMA guidelines, examines mathematical models developed for the prevention and management of diseases affecting maize, rice, wheat, barley, and sorghum.
Furaha Michael Chuma, Deli Zhang
wiley   +1 more source

On a stochastic epidemic SIR model with non-homogeneous population: a toy model for HIV

Open Mathematics
In this paper, we generalise a simple discrete-time stochastic SIR-type model introduced by Tuckwell and Williams. The SIR model by Tuckwell and Williams assumes a homogeneous population, a fixed infectious period, and a strict transition from ...
Rovira Carles
doaj   +1 more source

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

Alexandria 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, Abdullahi Alhassan, M.O. Ibrahim, S.A. Amoo   +3 more
doaj   +1 more source

Stochastic Modeling and Analysis of Hepatitis B Virus Dynamics Under Transportation and Lévy Noise

Journal of Applied Mathematics, Volume 2026, Issue 1, 2026.
Hepatitis B virus (HBV) remains a global health threat, especially under the influence of human mobility and environmental uncertainty. This paper proposes a stochastic SVAZR epidemic model that incorporates transportation dynamics and Lévy noise to account for both continuous fluctuations and sudden random shocks.
Sayed Murad Ali Shah, Peng Gang, Abdulwasea Alkhazzan, Lei Su   +3 more
wiley   +1 more source

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

Journal 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

From pandemic to a new normal: Strategies to optimise governmental interventions in Indonesia based on an SVEIQHR-type mathematical model

Infectious Disease Modelling, 2022
There are five different forms of intervention presently realised by the Indonesian government in an effort to end the COVID-19 pandemic: vaccinations, social restrictions, tracings, testings, and treatments.
Benny Yong, Jonathan Hoseana, Livia Owen
doaj   +1 more source