Results 11 to 20 of about 3,269 (139)

Pattern recognition in data as a diagnosis tool

open access: yesJournal of Mathematics in Industry, 2022
Medical data often appear in the form of numerical matrices or sequences. We develop mathematical tools for automatic screening of such data in two medical contexts: diagnosis of systemic lupus erythematosus (SLE) patients and identification of cardiac ...
Ana Carpio   +3 more
doaj   +1 more source

Heurísticas para o Problema de Dimensionamento de Lotes com Máquinas Paralelas Flexíveis

open access: yesTrends in Computational and Applied Mathematics, 2020
Este artigo trata do problema de dimensionamento de lotes com máquinas paralelas flexíveis, que consiste basicamente em determinar a quantidade de itens a serem produzidos, em cada uma das máquinas, em um horizonte de tempo finito, satisfazendo uma ...
M. C. F. Catelan   +3 more
doaj   +1 more source

Tracking Turbulent Coherent Structures by Means of Neural Networks

open access: yesEnergies, 2021
The behaviours of individual flow structures have become a relevant matter of study in turbulent flows as the computational power to allow their study feasible has become available. Especially, high instantaneous Reynolds Stress events have been found to
Jose J. Aguilar-Fuertes   +4 more
doaj   +1 more source

Dynamics in a Chemotaxis Model with Periodic Source

open access: yesMathematics, 2022
We consider a system of two differential equations modeling chemotaxis. The system consists of a parabolic equation describing the behavior of a biological species “u” coupled to an ODE patterning the concentration of a chemical substance “v”. The growth
Mihaela Negreanu, Antonio M. Vargas
doaj   +1 more source

On the broad tails in breaking time distributions of vibrated clogging arches [PDF]

open access: yesEPJ Web of Conferences, 2021
Flowing grains can clog an orifice by developing arches, an undesirable event in many cases. Several strategies have been put forward to avoid this. One of them is to vibrate the system in order to undo the clogging. Nevertheless, the time taken to break
Garcimartín Angel   +4 more
doaj   +1 more source

Nautelia: sistema automatizado para el ruteo náutico meteorológico

open access: yesRevista de Matemática: Teoría y Aplicaciones, 2009
Para el capit´an de un buque es muy importante contar con una propuesta de ruta que le permita llegar al puerto deseado en el menor tiempo posible considerando las condiciones meteorol´ogicas y oceanogr´aficas imperantes.
Yovany Cordero Hernández   +4 more
doaj   +1 more source

A Hadamard product involving inverse-positive matrices

open access: yesSpecial Matrices, 2015
In this paperwe study the Hadamard product of inverse-positive matrices.We observe that this class of matrices is not closed under the Hadamard product, but we show that for a particular sign pattern of the inverse-positive matrices A and B, the Hadamard
Gassó Maria T.   +2 more
doaj   +1 more source

Exact and Analytic-Numerical Solutions of Lagging Models of Heat Transfer in a Semi-Infinite Medium

open access: yesAbstract and Applied Analysis, 2013
Different non-Fourier models of heat conduction have been considered in recent years, in a growing area of applications, to model microscale and ultrafast, transient, nonequilibrium responses in heat and mass transfer.
M. A. Castro   +3 more
doaj   +1 more source

Estimación del error en cierta clase de métodos numéricos combinados de estrategia recorrectora

open access: yesRevista de Matemática: Teoría y Aplicaciones, 2009
This paper shows an analysis of the order for the approximation and roundoff errors in combined numerical scheme with recorrector strategy of Adams–Moulton– Bashfort family.
Aymée Marrero, Marta Lourdes Baguer
doaj   +1 more source

Projecting the impact of Covid-19 variants and vaccination strategies in disease transmission using a multilayer network model in Costa Rica

open access: yesScientific Reports, 2022
For countries starting to receive steady supplies of vaccines against SARS-CoV-2, the course of Covid-19 for the following months will be determined by the emergence of new variants and successful roll-out of vaccination campaigns.
Yury E. García   +6 more
doaj   +1 more source

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