El Castellar d’Elx: enigma, proyecto, documento

El proyecto de investigación arqueológica sobre el yacimiento ilicitano del Castellar d’Elx tiene como objetivo documentar, quizá, uno de los yacimientos arqueológicos más interesantes, controvertidos y olvidados que el panorama de la arqueología islámica puede ofrecer en la provincia de Alicante. La investigación ha sido impulsada por el Museo Arqueológico de Alicante (MARQ), con la participación de la Universidad de Alicante y el apoyo del Museo Arqueológico y de Historia de Elche (MAHE). Su objetivo primordial es la explicación histórica del asentamiento a la luz de los convulsos procesos de la formación de una sociedad islámica entre los siglos VIII y X, entre los que se sitúa la problemática de la localización del topónimo árabe al-‘Askar (el campamento), citado por el geógrafo oriental al-Ya’qûbi en su obra Kitab al-buldan, fechada a finales del siglo IX.

Majorana Zero Modes in Graphene

A clear demonstration of topological superconductivity (TS) and Majorana zero modes remains one of the major pending goals in the field of topological materials. One common strategy to generate TS is through the coupling of an s-wave superconductor to a helical half-metallic system. Numerous proposals for the latter have been put forward in the literature, most of them based on semiconductors or topological insulators with strong spin-orbit coupling. Here, we demonstrate an alternative approach for the creation of TS in graphene-superconductor junctions without the need for spin-orbit coupling. Our prediction stems from the helicity of graphene’s zero-Landau-level edge states in the presence of interactions and from the possibility, experimentally demonstrated, of tuning their magnetic properties with in-plane magnetic fields. We show how canted antiferromagnetic ordering in the graphene bulk close to neutrality induces TS along the junction and gives rise to isolated, topologically protected Majorana bound states at either end. We also discuss possible strategies to detect their presence in graphene Josephson junctions through Fraunhofer pattern anomalies and Andreev spectroscopy. The latter, in particular, exhibits strong unambiguous signatures of the presence of the Majorana states in the form of universal zero-bias anomalies. Remarkable progress has recently been reported in the fabrication of the proposed type of junctions, which offers a promising outlook for Majorana physics in graphene systems.

El traductor e intérprete emprendedor: análisis de la supervivencia de las empresas y los empresarios autónomos

This study presents an empirical analysis of the determinants of firm and self-employed survival in the Spanish translation sector. In the midst of a global downturn firm and self-employed survival is a key factor for the progress of the economies and for a better and more stable future. The study presents, first of all, a review of the literature on translation, interpreting, career opportunities, and entrepreneurship, and firm survival. The following empirical analysis explores the combination of variables of human capital, contingency and economic investment that potentially drive translation and interpreting firms or self-employed entrepreneurs to survive. The study performs a comparative qualitative analysis with a fs/QCA methodology identifying nine combination of causes that lead to the outcome. The results contribute towards a better understanding of entrepreneur translators’ lifespan as they provide an empirical outlook on the different causal paths that predict the survival of those translation and interpreting firms or self-employed entrepreneurs. The last part concludes with the most relevant findings of this research study. With little literature on the topic of firm survival in the translation and interpreting sector the paper aims to fill this gap and make a valuable contribution to the current literature on translation-firm creation and firm and self-employed survival.