Results 31 to 40 of about 849 (135)

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

open access: yesComputational 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 Simple Mathematical Standardized Measurement of Acetabulum Anteversion after Total Hip Arthroplasty

open access: yesComputational and Mathematical Methods in Medicine, Volume 9, Issue 2, Page 105-119, 2008., 2008
We invented a standardization method to measure the cup′s anteversion after total hip arthroplasty without the influence of patient′s position. We measured 68 radiographs of 10 patients after total hip replacement (THR) and calculated the error of each measurement, defined as the difference with the average of the same measuring method on the same ...
Chen-Kun Liaw   +4 more
wiley   +1 more source

Mathematical analysis of a MERS-Cov coronavirus model

open access: yesDemonstratio Mathematica, 2022
In this study, we have proposed a mathematical model to describe the dynamics of the spread of Middle East Respiratory Syndrome disease. The model consists of six-coupled ordinary differential equations.
DarAssi Mahmoud H.   +2 more
doaj   +1 more source

Modelling Immune Response and Drug Therapy in Human Malaria Infection

open access: yesComputational and Mathematical Methods in Medicine, Volume 9, Issue 2, Page 143-163, 2008., 2008
A new intra‐host model of malaria that describes the dynamics of the blood stages of the parasite and its interaction with red blood cells and immune effectors is proposed. Local and global stability of the disease free equilibrium are investigated. Conditions for existence and uniqueness of the endemic equilibrium are derived.
C. Chiyaka, W. Garira, S. Dube
wiley   +1 more source

Nabla inequalities and permanence for a logistic integrodifferential equation on time scales

open access: yesOpen Mathematics, 2017
In this paper, by using the theory of calculus on time scales and some mathematical methods, several nabla dynamic inequalities on time scales are established. As an application, we apply the obtained results to a logistic integrodifferential equation on
Hu Meng, Wang Lili
doaj   +1 more source

A Stochastic Model of Icosahedral Capsid Growth

open access: yesComputational and Mathematical Methods in Medicine, Volume 6, Issue 2, Page 95-97, 2005., 2005
A model of growth of icosahedral capsids is proposed. It is similar to the stochastic model of fullerene growth, but takes into account variations in the composition of pentamers and hexamers that are responsible for the final capsid size. We show that the observed high yield of capsid production implies a high level of self‐organization of the ...
R. Kerner
wiley   +1 more source

Cost-effective optimal control analysis of a COVID-19 transmission model incorporating community awareness and waning immunity

open access: yesComputational and Mathematical Biophysics, 2023
This article presents a cost-effective optimal control analysis of interventions applied to a S2EI2RS type deterministic compartmental model of COVID-19, considering community awareness and immunity loss. We introduce two time-dependent controls, namely,
Lamba Sonu, Srivastava Prashant K.
doaj   +1 more source

A stochastic SIRI epidemic model with Lévy noise [PDF]

open access: yes, 2018
Some diseases such as herpes, bovine and human tuberculosis exhibit relapse in which the recovered individuals do not acquit permanent immunity but return to infectious class. Such diseases are modeled by SIRI models.
Berrhazi, Badr-eddine   +3 more
core   +1 more source

Effect of randomly fluctuating environment on autotroph‐herbivore model system

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2004, Issue 68, Page 3703-3716, 2004., 2004
First we deal with a brief introduction of the autotroph‐herbivore model system along with deterministic analysis of local stability, bifurcation behavior, and persistence of the populations. The second part consists of the stochastic formulation of the model system to incorporate the effect of environmental fluctuation and then analysis of ...
Tapan Saha, Malay Bandyopadhyay
wiley   +1 more source

The Effect of a Refractory Period on the Power Spectrum of Neuronal Discharge [PDF]

open access: yes, 1995
The interspike intervals in steady-state neuron firing are assumed to be independently and identically distributed random variables. In the simplest model discussed, each interval is assumed to be the sum of a random neuron refractory period and a ...
Bair, Wyeth, Franklin, Joel
core   +2 more sources

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