Consumo e individualismo metodológico: una perspectiva crítica

Sin resume

La sentencia de Anaximandro

This work will focus on the Castoriadis's coment on the maxim of Anaximander, a pre-Socratic Greek philosopher, about Apeiron (the indefinite) as the source of all things. The work is based, to a great extent, on Castoriadis's own criteria: the neccesity of understanding of the social-historical context in which the maxim was produced and transmitted, his critic of the dominant ensemblisticidentitary logic-ontology, and his hypothesis of the Greek experience of the abyss. The article deals also with the Castoriadis's critique of Heidegger's interpretation of the pre-Socratic maxim and of the translation proposed by the German philosopher.Este trabajo se centrará en el comentario de Castoriadis en torno a la máxima del filósofo presocrático Anaximandro sobre Apeiron (indefinido) como fuente de todas las cosas. El trabajo se basa, en gran medida, en los propios criterios de Castoriadis: la necesidad de comprensión del contexto históricosocial en el que la máxima fue producida y transmitida, su crítica de la dominante lógica-ontología ensambladora e identitaria, y su hipótesis de la experiencia griega del abismo. El artículo se ocupa también de la crítica de Castoriadis de la interpretación de Heidegger de la máxima presocrática y de la traducción propuesta por este filósofo alemán

Simulation of scheduling gains in LTE

This paper describes the implementation of an LTE downlink simulator that is able to precisely model the fast time and frequency variations existing in a multipath channel. This is decisive to properly simulate the gains achievable by the channeldependent scheduling LTE is capable of. The aim of this study is to investigate the relationship between the throughput achieved by a base station and parameters of active users in the cell (such as SINR or speed). The ultimate goal is to obtain a model that can predict throughput as a function of a few selected parameters that characterize users’ conditions. A proportional fair scheduler is used because of its ability to maximize the BS throughput while preventing user starvation. Some conclusions are drawn on the main parameters affecting the BS throughput based on results obtained so far

Motivación para el cambio como predictor de la adherencia terapéutica en el dolor crónico

Los tratamientos psicológicos que enfatizan la autogestión han resultado comúnmente apropiados como alternativas a la intervención médica en el dolor crónico. Desafortunadamente esta aproximación a menudo falla en comprometer a una porción significativa de individuos hacia los tratamientos y considerables índices de abandono y de recaída. El objetivo de este estudio fue comprobar la validez predictiva del modelo de estadíos de cambio en el dolor crónico a través del Pain States of Change Questionnaire (PSOCQ) sobre la adherencia y los resultados terapéuticos. La muestra se compuso de 48 pacientes de dolor crónico, concretamente con trastorno de fibromialgia, reclutados en una unidad de dolor de un hospital público de Sevilla. La mitad de ellos siguió una intervención cognitivo-conductual, y la otra mitad un programa de autogestión guiado por pacientes entrenados. Los resultados avalan la capacidad predictiva del PSOCQ, en tanto en cuanto: a) se constató una probabilidad estadísticamente significativa de no completar el tratamiento cuanto menor fue la motivación para el cambio; b) la motivación para el cambio de los pacientes que completaron el tratamiento se incrementó de forma estadísticamente significativa; y, c) una menor motivación para el cambio tras el tratamiento se asoció a una mayor gravedad del trastorno. La discusión se centra en el interés de manejar la motivación para el cambio para mejorar la eficiencia terapéutica.Psychological treatments that emphasize the auto-management have turned out to be commonly adapted like alternative to the medical intervention in the chronic pain. Unfortunately this approximation often fails in compromising to a significant portion of individuals towards treatments and many abandons and relapses. The aim of this study was to verify the predictive validity of States of Change Model in chronic pain using the Pain States of Change Questionnaire (PSOCQ) to predict adherence and therapeutic results. The sampled consisted of 48 patients of chronic pains-fibromyalgia recruited in a public pain clinic of Seville (Spain). The half of them followed a cognitive-behavioral intervention, and another half a program of auto-management guided by expert patients. The results support the predictive validity of the PSOCQ, while in all that: a) patient with less change motivation had less probability of completing the treatment; b) change motivation increased as effect of the treatment; and c) a less change motivation was associated to more gravity of the disorder. The discussion centers of the interest of considering change motivation to improve therapeutic efficiency.Consejería de Salud de la Junta de Andalucí

A Circuit Implementing Massive Parallelism in Transition P Systems

ransition P-systems are based on biological membranes and try to emulate cell behavior and its evolution due to the presence of chemical elements. These systems perform computation through transition between two consecutive configurations, which consist in a m-tuple of multisets present at any moment in the existing m regions of the system. Transition between two configurations is performed by using evolution rules also present in each region. Among main Transition P-systems characteristics are massive parallelism and non determinism. This work is part of a very large project and tries to determine the design of a hardware circuit that can improve remarkably the process involved in the evolution of a membrane. Process in biological cells has two different levels of parallelism: the first one, obviously, is the evolution of each cell inside the whole set, and the second one is the application of the rules inside one membrane. This paper presents an evolution of the work done previously and includes an improvement that uses massive parallelism to do transition between two states. To achieve this, the initial set of rules is transformed into a new set that consists in all their possible combinations, and each of them is treated like a new rule (participant antecedents are added to generate a new multiset), converting an unique rule application in a way of parallelism in the means that several rules are applied at the same time. In this paper, we present a circuit that is able to process this kind of rules and to decode the result, taking advantage of all the potential that hardware has to implement P Systems versus previously proposed sequential solutions

Outflow of hot and cold molecular gas from the obscured secondary nucleus of NGC3256: closing in on feedback physics

The nuclei of merging galaxies are often deeply buried in dense layers of gas and dust. In these regions, gas outflows driven by starburst and AGN activity are believed to play a crucial role in the evolution of these galaxies. However, to fully understand this process it is essential to resolve the morphology and kinematics of such outflows. Using near-IR integral-field spectroscopy obtained with VLT/SINFONI, we detect a kpc-scale structure of high-velocity molecular hydrogen (H2) gas associated with the deeply buried secondary nucleus of the IR-luminous merger NGC3256. We show that this structure is likely the hot component of a molecular outflow, which is detected also in the cold molecular gas by Sakamoto et al. This outflow, with a molecular gas mass of M(H2)~2x10^7 Msun, is among the first to be spatially resolved in both the hot H2 gas with VLT/SINFONI and the cold CO-emitting gas with ALMA. The hot and cold components share a similar morphology and kinematics, with a hot-to-cold molecular gas mass ratio of ~6x10^-5. The high (~100 pc) resolution at which we map the geometry and velocity structure of the hot outflow reveals a biconical morphology with opening angle ~40 deg and gas spread across a FWZI~1200 km/s. Because this collimated outflow is oriented close to the plane of the sky, the molecular gas may reach maximum intrinsic outflow velocities of ~1800 km/s, with an average mass outflow rate of at least ~20 Msun/yr. By modeling the line-ratios of various near-IR H2 transitions, we show that the H2 gas in the outflow is heated through shocks or X-rays to a temperature of ~1900K. The energy needed to drive the outflow is likely provided by a hidden Compton-thick AGN or by the nuclear starburst. We show that the global kinematics of the molecular outflow in NGC3256 mimic those of CO-outflows that have been observed at low spatial resolution in starburst- and active galaxies.Comment: Accepted in Astronomy and Astrophysics (accepted 29 Aug 2014 v.3, initial submission v.1 14 March 2014), 13 pages, 8 figure

Understanding the two-dimensional ionization structure in luminous infrared galaxies. A near-IR integral field spectroscopy perspective

We investigate the 2D excitation structure of the ISM in a sample of LIRGs and Seyferts using near-IR IFS. This study extends to the near-IR the well-known optical and mid-IR emission line diagnostics used to classify activity in galaxies. Based on the spatially resolved spectroscopy of prototypes, we identify in the [FeII]1.64/Br$\gamma$ - H_2 1-0S(1)/Br$\gamma$ plane regions dominated by the different heating sources, i.e. AGNs, young MS massive stars, and evolved stars i.e. supernovae. The ISM in LIRGs occupy a wide region in the near-IR diagnostic plane from -0.6 to +1.5 and from -1.2 to +0.8 (in log units) for the [FeII]/Br$\gamma$ and H_2/Br$\gamma$ line ratios, respectively. The corresponding median(mode) ratios are +0.18(0.16) and +0.02(-0.04). Seyferts show on average larger values by factors ~2.5 and ~1.4 for the [FeII]/Br$\gamma$ and H_2/Br$\gamma$ ratios, respectively. New areas and relations in the near-IR diagnostic plane are defined for the compact, high surface brightness regions dominated by AGN, young ionizing stars, and SNe explosions, respectively. In addition, the diffuse regions affected by the AGN radiation field cover an area similar to that of Seyferts, but with high values in [FeII]/Br$\gamma$ that are not as extreme. The extended, non-AGN diffuse regions cover a wide area in the diagnostic diagram that overlaps that of individual excitation mechanisms (i.e. AGN, young stars, and SNe), but with its mode value to that of the young SF clumps. This indicates that the excitation conditions of the diffuse ISM are likely due to a mixture of the different ionization sources. The integrated line ratios in LIRGs show higher excitation conditions i.e. towards AGNs, than those measured by the spatially resolved spectroscopy. If this behaviour is representative, it would have clear consequences when classifying high-z, SF galaxies based on their near-IR integrated spectra.Comment: 18 pages, 13 figures, accepted for publication in A&