Results 71 to 80 of about 929,882 (177)

The Linear Stability and Basic Reproduction Numbers for Autonomous FDEs [PDF]

open access: yesarXiv, 2023
In this paper, we first prove the stability equivalence between a linear autonomous and cooperative functional differential equation (FDE) and its associated autonomous and cooperative system without time delay. Then we present the theory of basic reproduction number $\mathcal{R}_0$ for general autonomous FDEs.
arxiv  

Evaluating different epidemiological models with the identical basic reproduction number ℛ0

open access: yesJournal of Biological Dynamics, 2020
Epidemiological models with the identical basic reproduction number $ \mathcal {R}_0 $ may behave differently on both short time scale and long time scale.
Fan Bai
doaj   +1 more source

Spatial dynamics and the basic reproduction number of the 1991–1997 Cholera epidemic in Peru

open access: yesPLoS Neglected Tropical Diseases, 2020
After being cholera free for over 100 years, Peru experienced an unprecedented epidemic of Vibrio cholerae O1 that began in 1991 and generated multiple waves of disease over several years.
A. Smirnova   +6 more
semanticscholar   +1 more source

Global stability of a distributed delayed viral model with general incidence rate

open access: yesOpen Mathematics, 2018
In this paper, we discussed a infinitely distributed delayed viral infection model with nonlinear immune response and general incidence rate. We proved the existence and uniqueness of the equilibria.
Ávila-Vales Eric   +2 more
doaj   +1 more source

Basic concepts for the Kermack and McKendrick model with static heterogeneity [PDF]

open access: yesarXiv, 2023
In this paper, we consider the infection-age-dependent Kermack--McKendrick model in which host individuals are distributed in a continuous state space. To provide a mathematical foundation for the heterogeneous model, we develop a $L^1$-framework to formulate basic epidemiological concepts.
arxiv  

Mathematical Modeling for Hospitalization due to Temperature Variations [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences, 2019
Sudden changes in temperature occur due to ecological disturbances which results into global warming, volcanic eruption, depletion of ozone layer etc. This has become a crucial environmental and social issue all over the world.
Nita H. Shah   +3 more
doaj   +1 more source

MODEL MATEMATIKA PENYEBARAN PENYAKIT PULMONARY TUBERCULOSIS DENGAN PENGGUNAAN MASKER MEDIS

open access: yesBarekeng, 2020
This research developed a model of tuberculosis disease spread using the SIR model with addition of the medical mask usage factor. First, we create a diagram of the tuberculosis disease spread compartment through contact between individuals with medical ...
Nur Inayah   +3 more
doaj   +1 more source

Asymptotic profiles of basic reproduction number for epidemic spreading in heterogeneous environment [PDF]

open access: yesarXiv, 2019
The effect of diffusion rates on the basic reproduction number of a general compartmental reaction-diffusion epidemic model in a heterogeneous environment is considered. It is shown when the diffusion rates tend to zero, the limit of the basic reproduction number is the maximum value of the local reproduction number on the spatial domain.
arxiv  

Psychological effect can lead to bistability in epidemics [PDF]

open access: yesarXiv, 2020
In this paper, we study the psychological effect in a SIS epidemic model. The basic reproduction number is obtained. However, the disease free equilibrium is always asymptotically stable, which doesn't depends on the basic reproduction number. The system has a saddle-node bifurcation appear and displays bistable behavior, which is a new phenomenon in ...
arxiv  

Epidemic threshold conditions for seasonally forced SEIR models

open access: yesMathematical Biosciences and Engineering, 2005
In this paper we derive threshold conditions for eradication of diseases that can be described by seasonally forced susceptible-exposed-infectious-recovered (SEIR) models or their variants. For autonomous models, the basic reproduction number $\mathcal{R}
Junling Ma, Zhien Ma
doaj   +1 more source

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