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- Maite Betés, Miguel A Muñoz-Navas, +7 authors Miguel A Martínez-González
- The American journal of gastroenterology
- 2003

OBJECTIVE
The use of colonoscopy as a primary screening test for colorectal cancer (CRC) in average risk adults is a subject of controversy. Our primary objective was to build a predictive model based on a few simple variables that could be used as a guide for identifying average risk adults more suitable for examination with colonoscopy as a primary… (More)

- Rui M. P. Almeida, Stanislav N. Antontsev, José C. M. Duque
- Computers & Mathematics with Applications
- 2017

- Rui M. P. Almeida, Stanislav N. Antontsev, José C. M. Duque
- Mathematics and Computers in Simulation
- 2017

In this work, we study the convergence of the finite element method when applied to the following parabolic equation: u t = div(|u| γ(x) ∇u) + λ|u| σ(x,t)−2 u + f (x, t), x ∈ Ω ⊂ R d , t ∈]0, T ]. Since the equation may be of degenerate type, we utilize an approximate problem , regularized by introducing a parameter ε. We prove, under certain conditions on… (More)

- José C. M. Duque, Rui M. P. Almeida, Stanislav N. Antontsev, Jorge Ferreira
- J. Computational Applied Mathematics
- 2016

- José C. M. Duque, Rui M. P. Almeida, Stanislav N. Antontsev
- Mathematics and Computers in Simulation
- 2015

- José C. M. Duque, Rui M. P. Almeida, Stanislav N. Antontsev
- Applied Mathematics and Computation
- 2014

- José C. M. Duque, Rui M. P. Almeida, Stanislav N. Antontsev
- SIAM J. Numerical Analysis
- 2013

In this work, we study the convergence of the finite element method when applied to the following parabolic equation: ut = div(|u| γ(x) ∇u) + f (x, t), x ∈ Ω ⊂ R m , t ∈]0, T ]. Since the problem may be of degenerate type, we utilize an approximate problem, regularized by introducing a parameter ε. We prove, under certain conditions on γ and f , that the… (More)

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