Results 21 to 30 of about 277 (152)

Generalized Fokker–Planck Theory for Electron and Photon Transport in Biological Tissues: Application to Radiotherapy

open access: yesComputational and Mathematical Methods in Medicine, Volume 11, Issue 4, Page 313-339, 2010., 2010
In this paper, we study a deterministic method for particle transport in biological tissues. The method is specifically developed for dose calculations in cancer therapy and for radiological imaging. Generalized Fokker–Planck (GFP) theory [Leakeas and Larsen, Nucl. Sci. Eng. 137 (2001), pp.
Edgar Olbrant, Martin Frank
wiley   +1 more source

A statistical study of COVID-19 pandemic in Egypt

open access: yesDemonstratio Mathematica, 2021
The spread of the COVID-19 started in Wuhan on December 31, 2019, and a powerful outbreak of the disease occurred there. According to the latest data, more than 165 million cases of COVID-19 infection have been detected in the world (last update May 19 ...
Radwan Taha
doaj   +1 more source

Correlation between Animal and Mathematical Models for Prostate Cancer Progression

open access: yesComputational and Mathematical Methods in Medicine, Volume 10, Issue 4, Page 241-252, 2009., 2009
This work demonstrates that prostate tumour progression in vivo can be analysed by using solutions of a mathematical model supplemented by initial conditions chosen according to growth rates of cell lines in vitro. The mathematical model is investigated and solved numerically.
Z. Jackiewicz   +3 more
wiley   +1 more source

Effect of Allocated Radiotherapy after Breast Surgeries over Death Risk in Early Breast Cancer Patients: A Meta‐Analysis

open access: yesComputational and Mathematical Methods in Medicine, Volume 7, Issue 1, Page 45-51, 2006., 2006
Meta‐analysis is a widely used tool to synthesize the results of a set of primary studies leading to more powerful conclusions than those provided by isolated ones. To evaluate the effect of allocated radiotherapy, types of breast surgery and other risk factors over death risk in early breast cancer patients, we carried out a meta‐analysis using ...
V. Alba-Fernández, N. Ruiz-Fuentes
wiley   +1 more source

An Equilibrium Assembly Model Applied to Murine Polyomavirus

open access: yesComputational and Mathematical Methods in Medicine, Volume 6, Issue 2, Page 91-93, 2005., 2005
In Keef et al., Assembly Models for Papovaviridae based on Tiling Theory (submitted to J. Phys. Biol.), 2005 [1] we extended an equilibrium assembly model to the (pseudo–)T = 7 viral capsids in the family of Papovaviridae providing assembly pathways for the most likely or primary intermediates and computing their concentrations.
T. Keef
wiley   +1 more source

On the use of L-functionals in regression models

open access: yesOpen Mathematics, 2023
In this article, we survey and unify a large class or LL-functionals of the conditional distribution of the response variable in regression models.
Hössjer Ola, Karlsson Måns
doaj   +1 more source

The Architecture of Viral Capsids Based on Tiling Theory

open access: yesComputational and Mathematical Methods in Medicine, Volume 6, Issue 2, Page 87-90, 2005., 2005
A vital constituent of a virus is its protein shell, called the viral capsid, that encapsulates and hence protects the viral genome. The surface structures of a large number of icosahedral viruses can be modelled via Caspar‐Klug Theory, which has hence become one of the fundamental concepts in virology. However, growing experimental evidence have shown
R. Twarock
wiley   +1 more source

Posterior Predictive Checking for Partially Observed Stochastic Epidemic Models [PDF]

open access: yes, 2023
We address the problem of assessing the fit of stochastic epidemic models to data. Two novel model assessment methods are developed, based on disease progression curves, namely the distance method and the position-time method. The methods are illustrated
Kypraios, Theodore   +3 more
core   +1 more source

Identification of causal intervention effects under contagion

open access: yesJournal of Causal Inference, 2021
Defining and identifying causal intervention effects for transmissible infectious disease outcomes is challenging because a treatment – such as a vaccine – given to one individual may affect the infection outcomes of others. Epidemiologists have proposed
Cai Xiaoxuan   +2 more
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

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