Monte Carlo study of the spin-glass phase of the site-diluted dipolar Ising model

By tempered Monte Carlo simulations, we study site-diluted Ising systems of magnetic dipoles. All dipoles are randomly placed on a fraction x of all L^3 sites of a simple cubic lattice, and point along a given crystalline axis. For x_c< x<=1, where x_c = 0.65, we find an antiferromagnetic phase below a temperature which vanishes as x tends to x_c from above. At lower values of x, we find an equilibrium spin-glass (SG) phase below a temperature given by k_B T_{sg} = x e_d, where e_d is a nearest neighbor dipole-dipole interaction energy. We study (a) the relative mean square deviation D_q^2 of |q|, where q is the SG overlap parameter, and (b) xi_L/L, where xi_L is a correlation length. From their variation with temperature and system size, we determine T_{sg}. In the SG phase, we find (i) the mean values and decrease algebraically with L as L increases, (ii) double peaked, but wide, distributions of q/ appear to be independent of L, and (iii) xi_L/L rises with L at constant T, but extrapolations to 1/L -> 0 give finite values. All of this is consistent with quasi-long-range order in the SG phase.Comment: 15 LaTeX pages, 15 figures, 3 tables. (typos fixed in Appendix A

Visual Localisation of Mobile Devices in an Indoor Environment under Network Delay Conditions

Current progresses in home automation and service robotic environment have highlighted the need to develop interoperability mechanisms that allow a standard communication between the two systems. During the development of the DHCompliant protocol, the problem of locating mobile devices in an indoor environment has been investigated. The communication of the device with the location service has been carried out to study the time delay that web services offer in front of the sockets. The importance of obtaining data from real-time location systems portends that a basic tool for interoperability, such as web services, can be ineffective in this scenario because of the delays added in the invocation of services. This paper is focused on introducing a web service to resolve a coordinates request without any significant delay in comparison with the sockets

Reply to Comment on "Magnetization Process of Single Molecule Magnets at Low Temperatures"

This is the reply to a Comment by I.S.Tupitsyn and P.C.E. Stamp (PRL v92,119701 (2004)) on a letter of ours (J.F.Fernandez and J.J.Alonso, PRL v91, 047202 (2003)).Comment: 2 LaTeX pages, 1 eps figure. Submitted to PRL on 20 October 200

Independent audiovisual regulators in Spain : a unique case in Europe

This article describes and analyzes the configuration process, characteristic features, and future prospects of the Spanish model of independent audiovisual regulators. This model currently has a national multisectoral regulator (Comisión Nacional de los Mercados y de la Competencia), which was created in 2013, and two regional audiovisual regulators, which were created more than a decade ago. This combination of a national multisectoral regulator and regional audiovisual regulators is unlike any other in the European Union

La situación de Levante en el Estrecho.

Sin resume

Reflections around the idea of man as a deficient being: Ortega, Gehlen and Sloterdijk

En este artículo se realiza un recorrido a la concepción del hombre como ser carencial, una idea presente en la tradición filosófica desde Platón pero que tuvo un importante repunte entre los siglos XIX y XX en el contexto del surgimiento en Alemania de la antropología filosófica. En primer lugar, expondremos la apropiación de esta concepción del ser humano como ser deficitario en Ortega y Gehlen, para pasar, en segundo lugar, a su crítica por parte de Sloterdijk. Acabaremos con una propuesta en la que se armonizan estas reflexiones con los últimos datos aportados por la ciencia paleoantropológica.In this paper we carry out a review to the notion of man as a deficient being, an idea that can be located back in Plato, but one that had an important upsurge in the 19th and 20th centuries in the context of the emergency in Germany of the Philosophical Anthropology. In the first place, we will expose the interpretation of this notion by Ortega and Gehlen, to then turn, in the second place, to Sloterdijk´s critique of this idea. We will finish with a proposal that harmonizes this reflections with the last data provided by paleoanthropology

Al caer el sol: desarrollo de biblia y concept art

En esta memoria voy a presentar el desarrollo de la biblia y concept art del videojuego Al caer el sol, un juego que narra el camino de una chica por mundos desconocidos donde hay una saturación de contaminación ambiental, en los que la chica tendrá que atravesar para encontrar los elementos con los que erradicar el problema y salvar el planeta. Al caer el sol, es un videojuego reflexivo que busca la inmersión y crítica del público para aportar una experiencia nueva que va más allá que entretener. El juego se categoriza dentro del género de plataformas y aventuras. El jugador, tendrá que pasar por distintas plataformas controlando su dirección, y las distintas habilidades que vaya adquiriendo a medida que avanza el juego. A la misma vez, tendrá que desarrollar capacidades de exploración e investigación para poder resolver los rompecabezas presentados en el juego. Al caer el sol, va destinado a un público principalmente joven, interesado en videojuegos indie, como Griso Inside.In this report I will present the development of the bible and concept art of the video game Al caer el sol, a game that tells the path of a girl through unknown worlds where there is a saturation of environmental pollution, in which the girl will have to go through Find the elements with which to eradicate the problem and save the planet. Al caer el sol, it is a reflective videogame that seeks immersion and criticism of the public to provide a new experience that goes beyond entertaining. The game is categorized within the genre of platforms and adventures. The player will have to go through different platforms controlling his direction, and the different skills that he acquires as the game progresses. At the same time, you will have to develop exploration and research capabilities to be able to solve the puzzles presented in the game. Al caer el sol, it is intended for a mainly young audience, interested in indie video games, such as Gris or Inside.Universidad de Sevilla. Grado en Comunicación Audiovisua