Results 11 to 20 of about 722 (143)

Global stability dynamics and sensitivity assessment of COVID-19 with timely-delayed diagnosis in Ghana

open access: yesComputational and Mathematical Biophysics, 2022
In this paper, we study the dynamical effects of timely and delayed diagnosis on the spread of COVID-19 in Ghana during its initial phase by using reported data from March 12 to June 19, 2020. The estimated basic reproduction number, ℛ0, for the proposed
Moore Stephen E.   +4 more
doaj   +1 more source

Low temperatures or high isolation delay increases the average COVID-19 infections in India : A Mathematical modeling approach

open access: yesComputational and Mathematical Biophysics, 2021
The dynamics of COVID-19 in India are captured using a set of delay differential equations by dividing a population into five compartments. The Positivity and Boundedness of the system is shown.
Prakash D Bhanu   +4 more
doaj   +1 more source

Bifurcations for a deterministic SIR epidemic model in discrete time

open access: yesAdvances in Differential Equations, 2014
In this paper, we are concerned with the theoretical analysis of the bifurcations for a deterministic SIR epidemic model in discrete time. By deriving equations describing flows on the center manifolds, we discuss the transcritical bifurcation at the ...
Xiaoliang Zhou   +2 more
semanticscholar   +2 more sources

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

open access: yesComputational 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.   +5 more
doaj   +1 more source

Optimal Control for a Tuberculosis Model with Exogenous Reinfection under the Influence of Stigma

open access: yesComputational and Mathematical Biophysics, 2022
Often described as the world’s most deadly infectious disease, Tuberculosis remains a serious health threat in many parts of the world, especially in the developing countries.
Liguarda Remilou   +2 more
doaj   +1 more source

Within-host models of dengue virus transmission with immune response

open access: yesComputational and Mathematical Biophysics, 2023
Dengue fever is an infectious viral fever. The complex behavior of the virus within the body can be explained through mathematical models to understand the virus’s dynamics.
Muthu Poosan, Modak Bikash
doaj   +1 more source

Vibrational properties characterization of mouse embryo during microinjection [PDF]

open access: yes, 2013
To determine the vibration characteristics (natural frequencies and mode shapes) of a mouse embryo during microinjection the modal analysis is used. The spherical mouse embryo 60 μm in diameter is modeled as elastic finite elements biostructure ...
Hedrih Anđelka N., Ugrčić Marinko
core   +1 more source

Optimal Control for a COVID-19 Model Accounting for Symptomatic and Asymptomatic

open access: yesComputational and Mathematical Biophysics, 2020
Building on an SEIR-type model of COVID-19 where the infecteds are further divided into symptomatic and asymptomatic, a system incorporating the various possible interventions is formulated.
Macalisang Jead M.   +3 more
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

A reaction-diffusion system to better comprehend the unlockdown: Application of SEIR-type model with diffusion to the spatial spread of COVID-19 in France

open access: yesComputational and Mathematical Biophysics, 2020
We wondered that if a reaction-diffusion model considering only the mean daily movement of susceptible, exposed and asymptomatic individuals was enough to describe the spread of the COVID-19 virus.
Mammeri Youcef
doaj   +1 more source

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