Tecnologías digitales, cuerpo y estructura familiar : claves para aproximarnos a los adolescentes y jóvenes migrantes en Bizkaia

En este texto presento un breve resumen de mi trabajo de tesis doctoral, cuyo propósito ha sido indagar sobre las prácticas de vida y socialidad de adolescentes migrantes desde sus perspectivas y experiencias. Con esa meta, utilizamos una metodología etnográfica general y, en particular, un taller construido a partir de distintas técnicas artísticas, que invitó a cinco menores migrantes, residentes en un centro de menores de la provincia de Bizkaia, a ser participantes activos y comprometidos desde el principio en la generación del material de análisis sobre sus rutinas y actividades expresivas. Esta estrategia metodológica nos ha permitido entender y aportar un enfoque holístico del fenómeno migratorio de estos adolescentes y jóvenes. La perspectiva de análisis de esta investigación sitúa a las tecnologías de la información, el cuerpo y la estructura familiar como capitales y elementos centrales, a partir de cuya interrelación se explica la cotidianidad y socialidad de estos menores. Estos adolescentes migrantes están conectados con sus familias y comunidades transnacionales y, son constantes los intercambios que hacen que la migración y la movilidad se amalgamen.In this work I offer a brief overview of my doctoral thesis research, which is aimed at was to study the life and social practices of migrant adolescents from their own perspectives and experiences. With this goal in mind, we used a general ethnographic methodology and, in particular, a series of workshops built around different artistic techniques, in which we invited five migrant minors living in a Residential Centre in the province of Bizkaia to be active and committed participants from the very start in the processes of generating material from which to analyse their daily routines and the activities through which they expressed themselves. This methodological strategy allowed us to take a holistic approach to the study of the phenomenon of these adolescents'. The analytical perspective of this research therefore understands information technology, the physical body and family structure as key elements and sources of social capital, through whose interrelations we can observe the daily lives and social interactions of these minors. Thus, we will see how these migrant adolescents are connected with their families and transnational communities, along with the constant exchanges they engage in to integrate their migration and mobility

Frobenius pairs in abelian categories: correspondences with cotorsion pairs, exact model categories, and Auslander-Buchweitz contexts

In this work, we revisit Auslander-Buchweitz Approximation Theory and find some relations with cotorsion pairs and model category structures. From the notions of relatives generators and cogenerators in Approximation Theory, we introduce the concept of left Frobenius pairs $(\mathcal{X},\omega)$ in an abelian category $\mathcal{C}$. We show how to construct from $(\mathcal{X},\omega)$ a projective exact model structure on $\mathcal{X}^\wedge$, as a result of Hovey-Gillespie Correspondence applied to two compatible and complete cotorsion pairs in $\mathcal{X}^\wedge$. These pairs can be regarded as examples of what we call cotorsion pairs relative to a thick subcategory of $\mathcal{C}$. We establish some correspondences between Frobenius pairs, relative cotorsion pairs, exact model structures and Auslander-Buchweitz contexts. Finally, some applications of these results are given in the context of Gorenstein homological algebra by generalizing some existing model structures on the categories of modules over Gorenstein and Ding-Chen rings, and by encoding the stable module category of a ring as a certain homotopy category. We also present some connections with perfect cotorsion pairs, covering classes, and cotilting modules.Comment: 54 pages, 10 figures. The statement and proof of 2.6.21 was corrected. Typos corrected. Section 4 was improved, and new results in Section 5 were adde

Simulation of Rapidly-Exploring Random Trees in Membrane Computing with P-Lingua and Automatic Programming

Methods based on Rapidly-exploring Random Trees (RRTs) have been widely used in robotics to solve motion planning problems. On the other hand, in the membrane computing framework, models based on Enzymatic Numerical P systems (ENPS) have been applied to robot controllers, but today there is a lack of planning algorithms based on membrane computing for robotics. With this motivation, we provide a variant of ENPS called Random Enzymatic Numerical P systems with Proteins and Shared Memory (RENPSM) addressed to implement RRT algorithms and we illustrate it by simulating the bidirectional RRT algorithm. This paper is an extension of [21]a. The software presented in [21] was an ad-hoc simulator, i.e, a tool for simulating computations of one and only one model that has been hard-coded. The main contribution of this paper with respect to [21] is the introduction of a novel solution for membrane computing simulators based on automatic programming. First, we have extended the P-Lingua syntax –a language to define membrane computing models– to write RENPSM models. Second, we have implemented a new parser based on Flex and Bison to read RENPSM models and produce source code in C language for multicore processors with OpenMP. Finally, additional experiments are presented.Ministerio de Economía, Industria y Competitividad TIN2017-89842-

Decision-Theoretic Planning with Person Trajectory Prediction for Social Navigation

Robots navigating in a social way should reason about people intentions when acting. For instance, in applications like robot guidance or meeting with a person, the robot has to consider the goals of the people. Intentions are inherently nonobservable, and thus we propose Partially Observable Markov Decision Processes (POMDPs) as a decision-making tool for these applications. One of the issues with POMDPs is that the prediction models are usually handcrafted. In this paper, we use machine learning techniques to build prediction models from observations. A novel technique is employed to discover points of interest (goals) in the environment, and a variant of Growing Hidden Markov Models (GHMMs) is used to learn the transition probabilities of the POMDP. The approach is applied to an autonomous telepresence robot

Simulación tridimensional de una cámara de combustión experimental para obtener los campos de velocidad, presión y temperatura, mediante el software CFX 5.6

El objetivo de la presente investigación es predecir los campos de velocidad, presión y temperatura en una cámara de combustión experimental, mediante la técnica de la simulación numérica de flujo de fluidos. Para ello se revisa el procedimiento de solución numérica de las ecuaciones de transporte, aplicadas a la cámara de combustión experimental. La simulación está basada en el software CFX 5.6, el cual fue adquirido por la universidad nacional experimental del Táchira por medio del Decanato de Post-grado y de Investigación. Se hace un estudio de la sensibilidad de malla para adecuar el criterio de convergencia que el software requiere. La cámara de combustión experimental empleada para éste estudio es una cámara de combustión diseñada por estudiantes de Pre-grado para determinar la temperatura de flama adiabática, aunque el diseño de esta cámara no es estándar, es útil para medir la temperatura en tiempo real. El combustible empleado para éste análisis es propano (C3H8) el cual es inyectado a la cámara de combustión por una tubería concéntrica al flujo de aire. En la solución de la simulación computacional se aprecia, a través del perfil de temperatura, la envolvente de la llama, formada por el contorno de temperatura máxima, la cual es similar a la observada en cualquier cámara de combustión

Liberalización comercial y la creación y destrucción de empleo

This paper shows a search model to analyze the possible impact of a trade liberalization on job creation and job destruction. The model is calibrated to calculate the possible impact of the North American Free Trade Agreement on the Mexican economy. The results shows that the effects of NAFTA take place in the first two years. The production and the employment have a reduction of 0.14 and 0.16 percent, respectively, while the welfare level increases in 1.07%. The job creation and job destruction increases, and therefore there exist a higher job reallocation between sectors.

Análisis del efecto económico de la aplicación de una medida de salvaguarda: el caso de la industria del triplay

This paper uses an applied general equilibrium model to analyze the eventual effect of the application of a safeguard measure to the imports of plywood panels (three-ply). Basic results suggest the following. In first place, a safeguard measure of 35% applied to the imports of plywood panels increases the domestic production of this good, but it reduces the aggregate production of the Mexican economy. In second place, the effect on the consumer welfare is negative too. As a consequence, the safeguard should be eliminated.plywood panels, safeguard, applied general equilibrium models