Universality in quantum chaos and the one parameter scaling theory

We adapt the one parameter scaling theory (OPT) to the context of quantum chaos. As a result we propose a more precise characterization of the universality classes associated to Wigner-Dyson and Poisson statistics which takes into account Anderson localization effects. Based also on the OPT we predict a new universality class in quantum chaos related to the metal-insulator transition and provide several examples. In low dimensions it is characterized by classical superdiffusion or a fractal spectrum, in higher dimensions it can also have a purely quantum origin as in the case of disordered systems. Our findings open the possibility of studying the metal insulator transition experimentally in a much broader type of systems.Comment: 4 pages, 2 figures, acknowledgment added, typos correcte

Review of Geochronologic and Geochemical Data of the Greater Antilles Volcanic Arc and Implications for the Evolution of Oceanic Arcs

The authors greatly appreciate Javier Escuder Viruete and two anonymous reviewers with many constructive suggestions that helped we improve the manuscript. Haoyu Hu acknowledges support by Federal State Funding at Kiel University while Yamirka Rojas-Agramonte acknowledges support by the Deutsche Forschungsgemeinschaft (DFG) grant RO4174/3-3 and Antonio GarciaCasco acknowledges support by the Agencia Estatal de Investigacion (AEI) grant MICINN PID2019-105625RB-C21. This is UTD Geosciences contribution #1682. Open access funding enabled and organized by Projekt DEAL.The Greater Antilles islands of Cuba, Hispaniola, Puerto Rico and Jamaica plus the Virgin Islands host fragments of the fossil convergent margin that records Cretaceous subduction (operated for about 90 m.y.) of the American plates beneath the Caribbean plate and ensuing arc-continent collision in Late Cretaceous-Eocene time. The “soft” collision between the Greater Antilles Arc (GAA) and the Bahamas platform (and the margin of the Maya Block in western Cuba) preserved much of the convergent margin. This fossil geosystem represents an excellent natural laboratory for studying the formation and evolution of an intraoceanic convergent margin. We compiled geochronologic (664 ages) and geochemical data (more than 1,500 analyses) for GAA igneous and metamorphic rocks. The data was classified with a simple fourfold subdivision: fore-arc mélange, fore-arc ophiolite, magmatic arc, and retro-arc to inspect the evolution of GAA through its entire lifespan. The onset of subduction recorded by fore-arc units, together with the oldest magmatic arc sequence shows that the GAA started in Early Cretaceous time and ceased in Paleogene time. The arc was locally affected (retro-arc region in Hispaniola) by the Caribbean Large Igneous Province (CLIP) in Early Cretaceous and strongly in Late Cretaceous time. Despite multiple biases in the database presented here, this work is intended to help overcome some of the obstacles and motivate systematic study of the GAA. Our results encourage exploration of offshore regions, especially in the east where the forearc is submerged. Offshore explorations are also encouraged in the south, to investigate relations with the CLIP.Federal State Funding at Kiel UniversityGerman Research Foundation (DFG) RO4174/3-3Agencia Estatal de Investigacion (AEI) grant MICIN

Presente y futuro de la investigación, la innovación y el desarrollo de la intervención social con familias (Complemento práctico al capítulo 16 del libro: Intervención social con familias)

El presente documento complementario del tema 16 del libro incluye los archivos informáticos (documentos de texto, hojas de cálculo, páginas web) que, como integrantes del documento, han sido citados en el texto. También incluye otros archivos que se citan en este documento o que son necesarios para su funcionamiento. Los puede encontrar y consultar en el Centro del Estudiante, en el apartado Documentos de Trabajo. Este documento es interactivo. Están marcados los enlaces a las distintas partes del mismo para facilitar el acceso rápido a las mismas. Complementos I: Tratamiento personalizado de los datos de las encuestas. Complemento 16.1. Valoración de respuestas con lógica difusa. Complemento 16.2. Ordenación de datos de encuestas. Complemento 16.3. Aplicaciones sencillas de tratamiento de datos. Complementos II: Aplicación a la intervención social de los resultados del tratamiento de datos. Complemento 16.4. Práctica de ordenación de datos de encuestas de intervención social. Complemento 16.5. Práctica de tratamiento de datos de encuestas de intervención social. Complemento 16.6. Ejemplo de aplicación en la línea de investigación de constelaciones organizacionales

Evaluation of the Early Childhood Music Education project’s influence on the development of 3- to 5-year-old children

In 2005, the Barenboim-Said Foundation launched the Early Childhood Music Education project in Andalusia (Spain) to promote music education for young children. Ten years later, an initial study was performed to evaluate the influence of the project on the development of the participating children. The results of this study form part of a broader ongoing research project, in collaboration with the University of Seville, aimed at investigating the influence of the Early Childhood Music Education project on general aspects of child development. This study has a quasi-experimental design, framed in Gardner’s Theory of Multiple Intelligences, consisting of an experimental and a control group (n = 1101) and the administration of a questionnaire, adapted to measure and compare means between the two groups, as the sole measurement tool. The results, analysed using an independent samples t-test for the comparison of means and Cohen’s d effect size, reveal statistically significant differences in the means of the dimensions of the experimental and control groups. This confirms the hypothesis that the Early Childhood Music Education project has a positive impact on the different dimensions, in accordance with Gardner’s Theory of Multiple Intelligences