La situación de las mujeres migradas víctimas de violencia de género. Propuestas de intervención

Este estudio surge con la intención de dar respuesta a la atención psicosocial en formato grupal de mujeres migradas que han sido víctimas de violencia de género. Dado que nos movemos en una sociedad multicultural, debemos encaminar nuestros esfuerzos hacia la integración del elemento cultural en las intervenciones. El trabajo está articulado en torno a dos grandes bloques. El primero, con tres ejes medulares, trata la situación actual de las mujeres migradas en nuestro contexto: I) los factores críticos en las mujeres migradas para superar la situación de maltrato; II) el marco legal de protección de las mujeres víctimas de malos tratos, y III) las respuestas y los retos actuales a los que nos enfrenta este fenómeno. Para elaborar el segundo bloque se ha tenido en cuenta las experiencias particulares de las mujeres extranjeras y sus contextos. A partir de entrevistas y grupos de discusión, se han ido recogiendo la voz de las mujeres migradas que han vivido situaciones de maltrato y explorado sus realidades, preocupaciones e inquietudes a fin de poder responder a sus necesidades para ayudarlas en los procesos de recuperación.

Robust power allocation algorithms for MIMO OFDM systems with imperfect CSI

This paper presents a Bayesian approach to the design of transmit prefiltering matrices in closed-loop schemes robust to channel estimation errors. The algorithms are derived for a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system. Two different optimizationcriteria are analyzed: the minimization of the mean square error and the minimization of the bit error rate. In both cases, the transmitter design is based on the singular value decomposition (SVD) of the conditional mean of the channel response, given the channel estimate. The performance of the proposed algorithms is analyzed,and their relationship with existing algorithms is indicated. As withother previously proposed solutions, the minimum bit error rate algorithmconverges to the open-loop transmission scheme for very poor CSI estimates.

Intrinsic subspace convergence in TDD MIMO communication

In numerical linear algebra, students encounter earlythe iterative power method, which finds eigenvectors of a matrixfrom an arbitrary starting point through repeated normalizationand multiplications by the matrix itself. In practice, more sophisticatedmethods are used nowadays, threatening to make the powermethod a historical and pedagogic footnote. However, in the contextof communication over a time-division duplex (TDD) multipleinputmultiple-output (MIMO) channel, the power method takes aspecial position. It can be viewed as an intrinsic part of the uplinkand downlink communication switching, enabling estimationof the eigenmodes of the channel without extra overhead. Generalizingthe method to vector subspaces, communication in thesubspaces with the best receive and transmit signal-to-noise ratio(SNR) is made possible. In exploring this intrinsic subspace convergence(ISC), we show that several published and new schemes canbe cast into a common framework where all members benefit fromthe ISC.

Una pintura d'Antoni Viladomat i Manalt (1678-1755) a Manresa : l'Assumpta de Santa Maria de l'Alba

This painting with an exceptional iconography of the Assumption of the Virgin with All the Saints, was saved from a altarpiece in the church of Santa Maria de l'Alba in Manresa, which was burnt during the Spanish Civil War. The article attributes this painting to Antoni Viladomat i Manalt (1678-1755), one of the most relevant figures in the Catalan artistic scene in the 18th century, and it dates it to the latter years of his extensive artistic career. An analysis of the work shows that the Catalan painter incorporated some figurative elements that he borrowed from an engraving of the Swiss engraver, Jakob Frey (1681-1752), interpreted from a canvas of the Italian painter Sebastiano Conca (1680-1764). This helps to relate the canvas of the Barcelona painter-based on his previous figurative work with high Roman baroque- to the new proposals of the so-called Roman barrochetto. In addition the study hopes to offer the reader an artistically cultural view of Antoni Viladomat, openly concerned by the novelties that constantly reached Catalonia by means of the engravings

La Costa Brava ante los nuevos retos del turismo

The first section of this paper summarises the most relevant charateristics of the contemporary tourist model, also called postfordist or postmodernist. In the second part the traditional tourist model developed in the Costa Brava in the past decades, is reviewed. Emphasising the saturation of tourist facilities on the coast line, expansive urban growth, thanks to a tolerant administration, poor complementary supply and concentrated demand in few markets and the proximity of Barcelona conurbation, stressed by second homes. In the third section, some strategies developed in recent years to readapt the Costa Brava to the new tendencies in tourism, are presented. Incorporation of the inland to the tourist product, new planning policics, lessening urban densities and height, and a change in mind in favour of protected natural areas, diversification of demand with new markets, specially form Eastern Europe (although this might be considered as a continuation ofthe traditional tourist model) and the emergence of local strategies oriented towards the creation of new tourist products based upon natural and cultural resources

Simultaneous measurement of regional cerebral blood flow by perfusion CT and stable xenon CT: a validation study.

BACKGROUND AND PURPOSE: Knowledge of cerebral blood flow (CBF) alterations in cases of acute stroke could be valuable in the early management of these cases. Among imaging techniques affording evaluation of cerebral perfusion, perfusion CT studies involve sequential acquisition of cerebral CT sections obtained in an axial mode during the IV administration of iodinated contrast material. They are thus very easy to perform in emergency settings. Perfusion CT values of CBF have proved to be accurate in animals, and perfusion CT affords plausible values in humans. The purpose of this study was to validate perfusion CT studies of CBF by comparison with the results provided by stable xenon CT, which have been reported to be accurate, and to evaluate acquisition and processing modalities of CT data, notably the possible deconvolution methods and the selection of the reference artery. METHODS: Twelve stable xenon CT and perfusion CT cerebral examinations were performed within an interval of a few minutes in patients with various cerebrovascular diseases. CBF maps were obtained from perfusion CT data by deconvolution using singular value decomposition and least mean square methods. The CBF were compared with the stable xenon CT results in multiple regions of interest through linear regression analysis and bilateral t tests for matched variables. RESULTS: Linear regression analysis showed good correlation between perfusion CT and stable xenon CT CBF values (singular value decomposition method: R(2) = 0.79, slope = 0.87; least mean square method: R(2) = 0.67, slope = 0.83). Bilateral t tests for matched variables did not identify a significant difference between the two imaging methods (P >.1). Both deconvolution methods were equivalent (P >.1). The choice of the reference artery is a major concern and has a strong influence on the final perfusion CT CBF map. CONCLUSION: Perfusion CT studies of CBF achieved with adequate acquisition parameters and processing lead to accurate and reliable results.

Estratigrafia i evolució conceptual d'un paisatge de muntanya al massís del Garraf: la Maçana-Rovirós-Térmens (Begues)

En aquest estudi, l'aplicació regressiva de tècniques com la prospecció arqueològica, la foto i cartointerpretació, els SIG i el buidatge documental han permès la reconstrucció diacrònica del paisatge de l'àrea de la Maçana-Térmens-Rovirós (Begues). L'estudi paisatgístic del Garraf revesteix un singular interès per la seva condició muntanyenca i la seva intensa antropització. Els entorns de muntanya són medis especialment sensibles a processos de canvi, especialment en el cas del massís del Garraf, proper a importants nuclis d'habitació des de l'antiguitat. El nostre treball mostrarà com, en ocasions, el canvi paisatgístic ha estat irreversible al massís.

World Library and Information Congress: 75th IFLA General Conference and Assembly.

L"edició del 2009 de la trobada de l"IFLA s"ha celebrat a Milà. La maquinària de l"organització va funcionar amb precisió per a aquest esdeveniment. Després d"anys de regularitat en les trobades per tot el món, l"IFLA funciona com un autòmat, una d"aquestes màquines perfectes, tant que podria continuar uncionant en les formes amb exemplar artifici. És un trobada singular, que aplega, a la vegada, la reunió de l"organització, un congrés mundial i una fira comercial; tot això amanit amb una ciutat diferent cada any i un finançament que depèn de la bona marxa de tot l"esdeveniment. En certa mesura, l"IFLA és un aparador de la professió, al qual assisteixen bibliotecaris de tot el món i de centenars d"institucions, amb tot el que suposa d"artificiositat en la representació d"entitats i promoció; un espai de reflexió, amb ponències i debats de molt variat interès que poden trobar-se, generalment, en altres esdeveniments; i una posada a punt dels treballs de tots els comitès, que tenen un complex desenvolupament previ i una àrdua tasca desenvolupada amb generositat per tots els participants.

Evolution and sedimentology of a channel fill in the sandy braided South Saskatchewan River and its comparison to the deposits of an adjacent compound bar

The depositional stratigraphy of within-channel deposits in sandy braided rivers is dominated by a variety of barforms (both singular `unit' bars and complex `compound' bars), as well as the infill of individual channels (herein termed `channel fills'). The deposits of bars and channel fills define the key components of facies models for braided rivers and their within-channel heterogeneity, knowledge of which is important for reservoir characterization. However, few studies have sought to address the question of whether the deposits of bars and channel fills can be readily differentiated from each other. This paper presents the first quantitative study to achieve this aim, using aerial images of an evolving modern sandy braided river and geophysical imaging of its subsurface deposits. Aerial photographs taken between 2000 and 2004 document the abandonment and fill of a 1 3 km long, 80 m wide anabranch channel in the sandy braided South Saskatchewan River, Canada. Upstream river regulation traps the majority of very fine sediment and there is little clay (<1%) in the bed sediments. Channel abandonment was initiated by a series of unit bars that stalled and progressively blocked the anabranch entrance, together with dune deposition and stacking at the anabranch entrance and exit. Complete channel abandonment and subsequent fill of up to 3 m of sediment took approximately two years. Thirteen kilometres of ground-penetrating radar surveys, coupled with 18 cores, were obtained over the channel fill and an adjacent 750 m long, 400 m wide, compound bar, enabling a quantitative analysis of the channel and bar deposits. Results show that, in terms of grain-size trends, facies proportions and scale of deposits, there are only subtle differences between the channel fill and bar deposits which, therefore, renders them indistinguishable. Thus, it may be inappropriate to assign different geometric and sedimentological attributes to channel fill and bar facies in object-based models of sandy braided river alluvial architecture.

Boris Vian dans ses poèmes

El artículo se propone mostrar cómo el estudio de los poemas y canciones de Boris Vian sólo cobra sentido mediante un análisis de conjunto. Tras la aparente dispersión de temas y estilos, bajo la apariencia superficial, cómica y en ocasiones incluso grotesca y banal de sus poemas y canciones, se oculta una unidad y una coherencia profundas y minuciosamente calculadas. Para expresarla Vian huye de las limitaciones de la lógica heredada de Aristóteles y opta por utilizar la técnica del collage, yuxtaponiendo una pluralidad de situaciones y acciones en las que lo real se entremezcla con lo imaginario, cuyo resultado final es la representación de una realidad única, indivisible y a la vez relativa y singular en función de cada individuo, en la que los aparentes antagonismos se revelan como elementos complementarios en el proceso de individualización y conocimiento del «yo» interior.

Sarraïns sota el domini de la família Montcada: les aljames de la baronia d'Aitona al segle XV

L'any 1212 la família Montcada es fa amb el control de l´àrea del Baix Segre, una de les mes densament habitades en època islàmica. Dos segles després, tot i la profunda implantació del sistema feudal, la comunitat musulmana no només hi conserva una forta presencia poblacional sinó que a més mante vives bona part de les seves institucions. Aquesta comunitat -organitzada en aljames- es concentra en les viles d’Aitona, Seròs i Mequinensa, on constitueix el gruix de la població. Aquesta tensió entre els antics i els nous marcs de relacions en que es mou la comunitat islàmica (materialitzats en sistemes de tinença com l’emfiteusi) conferí a la zona un caire marcadament singular.

La infancia en riesgo social desde la sociedad del bienestar

El artículo plantea la necesidad de redefinir el concepto de infancia en situación de riesgo social, dado que las avanzadas sociedades del bienestar están siendo escenario de nuevos fenómenos sociales que provocan a su vez la aparición de nuevos colectivos infanto-juveniles en riesgo. Se conoce el maltrato infantil familiar como una causa clara del riesgo social pero, ¿existen otras situaciones, fuera de la familia, que provocan la aparición de poblaciones infantiles en situación de riesgo social?, ¿se puede hablar de infancia en situación de riesgo social cuando no existen maltratos o negligencia en la familia? En definitiva, ¿las sociedades desarrolladas y avanzadas son el escenario de nuevos grupos de riesgo social? Estos son los interrogantes que pretende responder el presente artículo.

Tradición y modernidad en las políticas educativas en España: una revisión de las últimas décadas

En el presente artículo trazamos un panorama aproximativo de algunas de las cuestiones más relevantes que determinan, al tiempo que reflejan, las políticas educativas en España desde la década de 1980 hasta la actualidad. Esta revisión de los últimos 25 años permitirá apreciar, siquiera de manera epidérmica e inevitablemente parcial, la tensión o dialéctica entre la tradición-caracterizada por la persistencia de formas caducas en la concepción y en la provisión educativa- y la modernidad-portadora de la tendencia al cambio y a la innovación, si bien no exenta de ambigüedad y contradicción en su propio desarrollo-. Nos detenemos en aquellos ejes a partir de los cuales se articula nuestra reflexión, tales como las políticas educativas, la organización del sistema educativo, la convergencia europea, las organizaciones transnacionales reguladoras de las políticas educativas y prospectivas, finalizando con algunas conclusiones que, aun siendo abiertas, plantean la persistencia de las dinámicas reproductoras. Nuestro análisis se ciñe, para esta ocasión, al ámbito de la educación formal, sin dejar de reconocer la importancia creciente de los espacios de educación no formal e informal, y de los sectores emergentes derivados de los mismos. Como se verá, nuestro planteamiento se enmarca dentro de una interpretación singular acerca de las derivaciones y consecuencias de la modernidad tardía en la que se inscribe nuestro período de estudio

Wavelet Analysis in Turbulence

The objective of this thesis is to study wavelets and their role in turbulence applications. Under scrutiny in the thesis is the intermittency in turbulence models. Wavelets are used as a mathematical tool to study the intermittent activities that turbulence models produce. The first section generally introduces wavelets and wavelet transforms as a mathematical tool. Moreover, the basic properties of turbulence are discussed and classical methods for modeling turbulent flows are explained. Wavelets are implemented to model the turbulence as well as to analyze turbulent signals. The model studied here is the GOY (Gledzer 1973, Ohkitani & Yamada 1989) shell model of turbulence, which is a popular model for explaining intermittency based on the cascade of kinetic energy. The goal is to introduce better quantification method for intermittency obtained in a shell model. Wavelets are localized in both space (time) and scale, therefore, they are suitable candidates for the study of singular bursts, that interrupt the calm periods of an energy flow through various scales. The study concerns two questions, namely the frequency of the occurrence as well as the intensity of the singular bursts at various Reynolds numbers. The results gave an insight that singularities become more local as Reynolds number increases. The singularities become more local also when the shell number is increased at certain Reynolds number. The study revealed that the singular bursts are more frequent at Re ~ 107 than other cases with lower Re. The intermittency of bursts for the cases with Re ~ 106 and Re ~ 105 was similar, but for the case with Re ~ 104 bursts occured after long waiting time in a different fashion so that it could not be scaled with higher Re.

The Outcry of the Periphery? An Analysis of Ticino's No to Immigration

When the popular initiative "against mass immigration" was accepted by the Swiss people and cantons on 9 February 2014, Ticino had by far the highest approval rate. The Italian-speaking canton thus once more confirmed its singular position, assumed since the 1990s, on popular votes regarding immigration and foreign policy. This seems to be indicative of wider crises and changes in both the economic and political spheres that have favoured the emergence of a political opposition between centre and periphery. The results of a survey among 1400 citizens of Ticino after the vote of 9 February confirm this. In essence, on top of the question of immigration, the vote was influenced by a fearful perception of Ticino as a "double periphery" vis-à-vis both Berne and Lombardy.