Magnetized, Relativistic Jets

Extragalactic relativistic jets are composed by charged particles and magnetic fields, as inferred from the synchrotron emission that we receive from them. The Larmor radii of the particles propagating along the magnetic field are much smaller than the scales of the problem, providing the necessary coherence to the system to treat is as a flow. We can thus study them using relativistic magnetohydrodynamics. As a first step, we have studied the structure of steady-state configurations of jets by using numerical simulations. We have used a helical field configuration and have changed different relevant parameters that control the way in which the energy flux is distributed in jets (namely, the proportion of the energy flux carried by internal, kinetic or magnetic energy). Our results show significant differences among the different kinds of jets. Finally, we also report on results based on synthetic maps of our simulated jets.Comment: Submitted for publication in Proceedings of Science, as contribution to the proceedings of the XII Multifrequency Behaviour of High Energy Cosmic Sources Workshop, held in Palermo, 12-17 June 201

Validity and Reliability of an Inertial Device for Measuring Dynamic Weight-Bearing Ankle Dorsiflexion

A decrease in ankle dorsiflexion causes changes in biomechanics, and different instruments have been used for ankle dorsiflexion testing under static conditions. Consequently, the industry of inertial sensors has developed easy-to-use devices, which measure dynamic ankle dorsiflexion and provide additional parameters such as velocity, acceleration, or movement deviation. Therefore, the aims of this study were to analyze the concurrent validity and test-retest reliability of an inertial device for measuring dynamic weight-bearing ankle dorsiflexion. Sixteen participants were tested using an inertial device (WIMU) and a digital inclinometer. Ankle dorsiflexion from left and right ankle repetitions was used for validity analysis, whereas test-retest reliability was analyzed by comparing measurements from the first and second days. The standard error of the measurement (SEM) between the instruments was very low for both ankle measurements (SEM 0.05) even though a significant systematic bias (~1.77°) was found for the right ankle (d = 0.79). R2 was very close to 1 in the left and right ankles (R2 = 0.85–0.89) as well as the intraclass correlation coefficient (ICC > 0.95). Test-retest reliability analysis showed that systematic bias was below 1° for both instruments, even though a systematic bias (~1.50°) with small effect size was found in the right ankle (d = 0.49) with WIMU. The ICC was very close to 1 and the coefficient of variation (CV) was lower than 4% in both instruments. Thus, WIMU is a valid and reliable inertial device for measuring dynamic weight-bearing ankle dorsiflexion

Las mujeres en el cine y TV movies españoles (2000-2012): representaciones, sujetos y contextos

This paper aims at analysing the representation and participation of women in Spanish films and TV movies according to the following parameters: how do audiences validate inherited gender roles through box office results, how do films relate women’s experiences during democracy with social imaginaries constructed upon long shared narratives, how does the industry articulate women’s contribution.El presente artículo tiene como objetivo analizar la representación y participación de las mujeres en la producción fílmica española para cine y televisión atendiendo a: cómo se validan a través de los éxitos de las audiencias los esquemas de género heredados, cómo se vincula fílmicamente la experiencia de las mujeres en democracia con el imaginario construido a través de los relatos compartidos y de qué modo articula la industria la contribución de las mujeres

Media, ethics and gender-based violence: moving beyond victimization

El objetivo de este texto es presentar las principales líneas del debate sobre la configuración de la violencia de género en España con respecto a sus implicaciones éticas y proponer nuevos modos de acción discursiva (y, por tanto, política). Para ello, siguiendo la teoría de los actos de habla, Butler y Levinas, analizaremos la ética comunicativa que subyace en la actual visibilización de la violencia de género, la cual ha sido construida sobre la base de la victimización de la mujer. Consideramos que la figura de la mujer como víctima se ha reificado como si fuera un fetiche. Esta construcción conlleva la indefensión de las mujeres frente a la violencia y las priva de la posibilidad de empoderarse como sujetos de transformación social y política de la violencia que sufren. La reificación, a su vez, constituye el sufrimiento femenino como ajeno y obstaculiza la asunción de cualquier compromiso político por parte de los/as espectadores/as. Para contrarrestar estas prácticas, propondremos estrategias basadas en el concepto de «testimonio ético»The aim of this paper is to present the main lines of the debate on the configuration of gender violence in Spain in relation to its ethical implications and to propose new modes of discursive (and, therefore, political) action. In order to do that we will analyze, following speech acts theory, Butler and Levinas, the communication ethics that underlies the contemporary visibilization of gender violence. This has been constructed on the basis of female victimization. It is our contention that the figure of woman as victim has been reified into a fetish that renders women powerless in the face of gender violence, thus, disempowering them as subjects of social and political transformation before the violence they suffer. Reification, in turn, constitutes women’s suffering as alien and deprives spectatorship from any political commitment. Strategies based on the concept of «ethical witnessing» will be proposed to counteract these practice

Conciliación, publicidad e infancia

This paper aims at exploring from an interdisciplinary theoretical framework the development of the representation of conciliation of work, leisure and family time in Spanish advertising, in general, and in Spanish advertising addressed to children, in particular. Our argument is structured in four parts: firstly, we tackle the relevance of looking at advertising when presently discussing the theme of conciliation of public and private spheres; secondly, we focus on the stereotypes upon which contemporary advertising constructs its discourse; afterwards, we revise how those stereotypes have been historically informed and how they have evolved; and, finally, we analyse children’s advertising as a case study, since, given children’s vulnerability before media messages, the research in this area is highly needed.El presente trabajo tiene como objetivo establecer un marco teórico interdisciplinar que nos brinde las claves para explorar el desarrollo de la corresponsabilidad en la publicidad española, en general, y analizar cómo se plasma actualmente en la publicidad dirigida al público infantil, en particular. Nuestra reflexión se estructura en cuatro partes: en primer lugar, nos preguntamos, precisamente, sobre la relevancia de mirar un producto mediático como la publicidad a la hora de investigar el tema de la conciliación; seguidamente, abordaremos la cuestión de los estereotipos sobre los que dicha actividad capitaliza; a continuación, haremos una revisión histórica para contextualizar cómo se han manifestado y se manifiestan esos estereotipos; por último, tomaremos como caso de estudio la publicidad infantil, dado que es la que va dirigida a un público más vulnerable y la que necesita de mayores reformas

Cinematergrafía: la madre en el cine y la literatura de la democracia

Texto extraído del libro del mismo nombre publicado en la editorial Sendes de la Universitat Jaume

Re-framing the subject(s) of gender violence

The concern to eradicate violence against women is not new in the global agenda. In the search and struggle for a more equitable and peaceful world, the feminist movement has undoubtedly been the main driving force behind the changes produced. From diverse grassroots women’s movements against any kind of violence towards women (rape, battering, war or poverty, among others) to institutionalized feminist policies and NGOs working to combat gender-based violence, women’s organizations and initiatives have been able to raise awareness and articulate a demand to place gender-based violence at the core of political agendas. By having placed the collective and collective organization at the heart of the debate, women’s movements have sought not only to address direct violence, but also to transform the very frames sustaining its intelligibility

Las mujeres en el cine y TV movies españoles (2000-2012): representaciones, sujetos y contextos

El presente artículo tiene como objetivo analizar la representación y participación de las mujeres en la producción fílmica española para cine y televisión atendiendo a: cómo se validan a través de los éxitos de las audiencias los esquemas de género heredados, cómo se vincula fílmicamente la experiencia de las mujeres en democracia con el imaginario construido a través de los relatos compartidos y de qué modo articula la industria la contribución de las mujeres.This paper aims at analysing the representation and participation of women in Spanish films and TV movies according to the following parameters: how do audiences validate inherited gender roles through box office results, how do films relate women’s experiences during democracy with social imaginaries constructed upon long shared narratives, how does the industry articulate women’s contribution