On the congruence subgroup property for GGS-groups

We show that all GGS-groups with non-constant defining vector satisfy the congruence subgroup property. This provides, for every odd prime $p$, many examples of finitely generated, residually finite, non-torsion groups whose profinite completion is a pro-$p$ group, and among them we find torsion-free groups. This answers a question of Barnea. On the other hand, we prove that the GGS-group with constant defining vector has an infinite congruence kernel and is not a branch group.Comment: v2 incorporates referee suggestions (final version

L'equip reflexiu com a instrument terapèutic en els contextos de violència familiar

En la comprensió i la producció del llenguatge intervenen processos automatics i processos controlats. La diferència entre uns i altres està determinada pel grau d'implicació del sistema cognitiu en el processament el qual es pot inferir, en certa mesura, examinant el nivell de consciència i voluntarietat presents en realitzar una tasca. L'objectiu d'aquest article ha estat definir aquests processos i posar-los en relació amb un marc teòric de referència. L'automatisme s'explica a partir de la hipòtesi de la modularitat, mentre que els processos controlats, per la seva estreta relació amb el sistema cognitiu, són interpretats des de diferents marcs teòrics que abasten des de la perspectiva pragmàtica a la teoria de la ment.El presente trabajo trata de sintetizar las aportaciones del uso del Equipo reflexivo y justificar su utilización en casos de violencia familiar. Este instrumento permite, fundamentalmente, realizar una psicoterapia basada en el respeto y la creatividad, a la vez que protege la figura del terapeuta, caracteristicas todas ellas esenciales del contexto terapéutico en casos de violencia familiar.This work aims at summarising the contributions of using the Reflective Team and at justifying its use in cases of domestic violence. This instrument allows us to carry out psychotherapy particularly based on respect and creativity, and at the same time it protects the figure of the psychotherapist. These characteristics are essential of the therapeutic context in cases of domestic violence

Electrochemical and photo-electrochemical processes of Methylene blue oxidation by Ti/TiO2 electrodes modified with Fe-allophane

Indexación: Scopus.This work reports the degradation of methylene blue (MB) on Ti/TiO2 and Ti/TiO2/Fe-allophane electrodes in a pH 3 using 0.1 M Na2SO4 as support electrolyte. SEM micrographs show a homogeneous distribution of TiO2 over the whole electrode surface forming nanotubes and nanopores. Fe-allophane modified electrode shows the formation of large-grains agglomerate on the electrode surface due to allophane, which provides a greater surface area to the electrode due to meso and micropore structures. Preliminary cyclic voltammetry show that Ti/TiO2 has the typical voltammetric response due to Ti(III)/Ti(IV) pair. Diffusional problems were observed through of the film when the electrode is modified with Fe-allophane modifying the quasi-reversible process Ti(III)/Ti(IV). Different kind of methodologies in the degradation process were used: Electrochemistry (EC), Photochemistry (PC), Photoelectrochemistry (PEC) and Adsorption (Ads). These methods were developing to discard any reaction or interaction that is not of interest. On Ti/TiO2 with PC and Ads methodologies was not observed any activity to MB degradation showing that is not photosensitive and that the interaction between this and surface electrode is low. But with EC and PEC degradation to 55% is reached after 3 hours of electrolysis. With Ti/TiO2-Fe-allophane electrodes are observed a higher activity for all methodologies. The PC and Ads methods show that the MB degradation reaches to ∼20 % of the initial concentration. As mentioned above, the PC and Ads processes no show degradation on Ti/TiO2, therefore the degradation it only due to the adsorption of MB in/on allophane coat behaving as concentrator matrix. A lower improvement is observed with EC process when is incorporated Ti/TiO2-Fe-allophane is due to the barrier of the electrode surface by oxidation products. With PEC is reached the higher degradation value of ∼88 %, showing an improvement of the degradation with the presence of Fe-allophane. The results indicate that the main role of Fe-allophane on the electrode is similar to a concentrator matrix.http://ref.scielo.org/shz7t

Las "gnomai" en "Calírroe" como manifestación de la omnisciencia e injerencia del narrador

En este trabajo se analizan las máximas (gnomai) en Calírroe de Cantón de Afrodisias en tanto que recursos de caracterización. Se resalta que la mayor parte de ellas están en boca del narrador y que deben considerarse junto con los demás medios que este emplea (resúmenes, anticipaciones y valoraciones) para manifestar su omnisciencia y omnipresencia en la trama.This paper analyses the maxims (gnomai) in Chariton of Aphrodisias’ Callirhoe as resources for characterisation. It also highlights that most of them are expressed by the narrator. They must be considered, along with the other devices, such as summaries, anticipations and evaluations, as devices used to show the narrator’s omniscience and omnipresence in the plot

Las heroínas de novela griega al servicio de Ártemis

Es bien sabido que la novela griega fue objeto de interpretaciones religiosas desde principios del siglo veinte. Estudiosos de la talla de Merkelbach y Kerényi han intentado demostrar que las novelas griegas han de ser leídas como textos iniciáticos representativos de cultos como el de Isis, Helios o Eros. Dichas interpretaciones no se sostienen hoy día, si bien se sigue reconociendo el importante peso de la religión en el género. En este sentido, esta comunicación pretende determinar el significado que tiene el hecho de que en dos de las novelas conservadas la protagonista principal sea una sacerdotisa de la diosa Artemis, así como la función narratólogica que dicha circunstancia tiene en las novelas.____________________________________ Greek Romance has been interpretated from a religious point of view from the beginning of the XX Century. Scholars such as Merkelbach or Kerényi have tried to show that Greek romances must be read as iniciatic texts of Isis, Helios or Eros worship. Nowadays, such interpretations cannot be held, although the importance of religion in the genre is still recognised. In this sense, this paper tries to determine the meaning of the fact that the two main protagonists in two of the preserved romances are priestesses of the goddess Artemis, as well as the narratological function of that circumstance in the romances

Los agricultores como actores de la política agroambiental. Un enfoque multidimensional

En este artículo se analizan las actitudes de los agricultores ante la política agroambiental. Para ello, se recurre a un enfoque multidimensional (económico, social y medioambiental), que permite analizar el sistema de preferencias de los agricultores ante esta política. El predominio de una u otra dimensión a la hora de acogerse a un programa agroambiental dependerá de ese sistema de preferencias y de cómo éste interrelaciona con una estructura de oportunidades en la que intervienen, además de factores sociodemográficos y estructurales, la naturaleza y el contenido de los programas y las actitudes y estrategias de la Administración y de las organizaciones profesionales agrarias (OPA).In this article the author analyses farmers' attitudes facing with agri-environmental policy. To this end, a multidimensional approach is chosen (economic, social and environmental) allowing to analyse the farmers' preferences framework. What dimension predominates in deciding to apply or not for an agri-environemental measure depends on that preferences framework, and on how it interacts with an opportunities structure made up of the content and nature of agri-environmental programme and the attitudes and strategies of governments and farmers' unions

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El entorno de la violencia psicológica en el trabajo: ¿entre el buen salvaje y el «homo-homini-lupus»?

In the article it is done a revision of the concept of mobbing, focusing in: — The many faces that it implies, from the psychologicalindividual dimension to the legal-political one. — The biggest discussions taking place at the moment about the causes and forms of mobbing (individual vs. organizational problems). — Future research trends.En el artículo se plantea a revisión del concepto de acoso, analizando: — Las diferentes vertientes que comporta desde la dimensión psicológico-individual a la jurídico política. — Las principales polémicas existentes en cuanto a sus modalidades y causas (individuos vs. organizaciones perversas). — Las futuras líneas de investigación a seguir

Ninus and Metiochus in the school of rhetoric: the first Greek novels

The aim of this paper is to underline the influence of school rhetoric in two passages of Ninus and Parthenope. Ninus' speech in presence of his aunt Derkeia (frag. A of P.Berol. 6926) is analysed from the point of view of the stasis-theory and its most relevant formal features are commented. Metiochus’ refutation of the traditional mythical narrative on Eros (second column of P.Berol.7927) is dealt with the progymnasmatic theory. Moreover, the love-related motifs and the references to the previous literature are highlighted.He aim of this paper is to underline the influence of school rhetoric in two passages of Ninus and Parthenope. Ninus' speech in presence of his aunt Derkeia (frag. A of P.Berol. 6926) is analysed from the point of view of the stasis-theory and its most relevant formal features are commented. Metiochus’ refutation of the traditional mythical narrative on Eros (second column of P.Berol.7927) is dealt with the progymnasmatic theory. Moreover, the love-related motifs and the references to the previous literature are highlighted