[EN] In this paper, a mathematical model to describe the spread of an infectious disease on a farm is developed. To analyze the evolution of the infection, the direct transmission from infected individuals and the indirect ...

In this paper seasonal epidemiological processes are considered and a strategy of periodic vaccination is proposed. The invariant formulations associated with an N-periodic system and the reproduction numbers associated ...

[ES] Actualmente existe una clara concienciación de la población por la sostenibilidad, el cuidado del medio ambiente y el bienestar animal. Pero, además los consumidores exigen alimentos seguros lo que implica a toda la ...

A dynamic gas-liquid transfer model without chemical reaction based on unsteady film theory is considered. In this case, the mathematical model presented for gas-liquid mass-transfer processes is based on mass balances of ...

[EN] We propose a mathematical model for the indirect transmission via a contaminated environment by a disease agent and we analyze the possibility that the initial infection can spread in the population. We have used the ...

This paper presents the use of an iteration method to solve the identifiability problem for a class of discretized linear partial differential algebraic equations. This technique consists in replacing the partial derivatives ...

[ES] El mercado laboral actual es cada vez más exigente y ello hace que a los profesionales se les exija un mayor nivel de adquisición de competencias en sus tres dimensiones -cognitiva, instrumental y actitudinal- para ...

[EN] Let A be an irreducible totally nonnegative matrix with rank r and principal rank p, that is, all minors of A are nonnegative, r is the size of the largest invertible square submatrix of A and p is the size of its ...

En este trabajo se presenta un modelo epidemiológico en el que los individuos están en las categorías de susceptibles, infectados y recuperados, con todos los parámetros no negativos. Por las características del modelo ...