In this paper, we study dynamical properties such as hypercyclicity, supercyclicity, frequent hypercyclicity and chaoticity for transition operators associated to countable irreducible Markov chains. As particular cases, ...

The aim of this paper is to study some continuous-time bivariate Markov processes arising from group representation theory. The first component (level) can be either discrete (quasi-birth-and-death processes) or continuous ...

This thesis focuses on the study of stochastic population models composed of individuals interacting between them or with the environment. In a first part, we consider cross-diffusion systems for two species. We develop a ...

En este trabajo situamos algunos asuntos alrededor del concepto de objeto y damos cuenta de algunos de sus efectos en la estructura del lazo social y del discurso. Uno de estos efectos se hace patente gracias al conjunto ...

In this study, two computational models were developed, the first one predicts the appearance, location, and development of the mesenchymal condensation within the upper limb as it grows. Biochemical events were modeled ...

Esta tesis trata los modelos de morfogénesis, en particular los modelos de evolución guiada por contacto que son coherentes con la hipótesis de la adhesión diferencial. Se presenta una revisión de algunos modelos, sus ...

Zika is a disease caused by a virus that can affect different organs but when it attacks the nervous system during embryonic development, the effects are devastating. Since this neuropathology is of recent origin, the ...

The experiments described here were conducted at the Behavioral Neurophysiology Laboratory of Medicine School, Universidad Nacional de Colombia. The goal of this research was to describe the evolution of changes in ...