Persistent currents in two dimensions: New regimes induced by the interplay between electronic correlations and disorder

Using the persistent current I induced by an Aharonov-Bohm flux in square lattices with random potentials, we study the interplay between electronic correlations and disorder upon the ground state (GS) of a few polarized electrons (spinless fermions) with Coulomb repulsion. K being the total momentum, we show that I is proportional to K in the continuum limit. We use this relation to distinguish between the continuum regimes, where the lattice GS behaves as in the continuum limit and I is independent of the interaction strength U when K is conserved, and the lattice regimes where I decays as U increases. Changing the disorder strength W and U, we obtain many regimes which we study using the map of local currents carried by three spinless fermions

Phenotypic, Genetic and Environmental Architecture of the Components of Sleep Quality

The genetic and environmental underpinnings of sleep quality have been widely investigated. However, less is known about the etiology of the different sleep quality components and their associations. Subjective sleep quality has been studied most commonly using the Pittsburgh Sleep Quality Index (PSQI). Therefore, this work aimed to study the structure of sleep quality dimensions in a population-based twin sample by examining the etiology of the associations among the PSQI components themselves and between them. The sample comprised 2129 participants from the Murcia Twin Registry. In order to study the phenotypic, genetic and environmental structure of the PSQI we used three alternative multivariate twin models including all seven sub-scales of the PSQI (subjective sleep quality, latency, duration, efficiency, disturbances, use of sleeping medication and daytime dysfunction): a multivariate model (with seven separate correlated factors), a common pathway model and an independent pathway model. The multivariate correlated factors model showed the best fit to the data. All twin models indicated significant genetic overlap among most of the PSQI components, except daytime dysfunction and use of sleep medication. Bivariate heritability explained between 25 and 50% of the covariance for most associations between dimensions. Furthermore, the common pathway model showed that around one third of the variance (0.32; CI 95% 0.18.0.43) of a latent factor common to all questionnaire dimensions is explained by genetic factors. Genetic influences on a latent factor common to all questionnaire dimensions produced the same heritability estimates as the PSQI global score. However, sleep quality dimensions showed considerable specificity regarding its genetic-environmental structure.Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. GRANT SUPPORT: Funding: Ministerio de Ciencia, Innovación y Universidades - Spain (RTI2018-095185-B-I00) co-funded by European Regional Development Fund (FEDER)

Estudi de l’abandonament en el primer curs de la titulació de telecomunicacions

Dins de la tasca de coordinació del primer curs del grau de telecomunicacions s'ha observat un grau molt elevat d'abandonament de la titulació. Aquest fet condiciona la tasca i metodologia docent. Amb la intenció d'incrementar la qualitat del nou grau i augmentar les taxes de eficàcia, hem buscat els motius que originen aquest alt grau d’abandonament dins la titulació i hem ideat possibles solucions que posen remei o pal·lien en certa mesura aquest problema. Per això es presenten estratègies i mecanismes per augmentar la qualitat de la docència, es comparen els resultats dels darrers cursos i s’analitzen els resultats de les estratègies posades en marxa. La tasca ha estat desenvolupada pels coordinadors de cada assignatura que conjuntament han analitzat com es va produir l'abandó durant l'avaluació continuada.Aquesta comunicació s’ha pogut realitzar gràcies als projectes: GITE-09006-UA i GITE-09014-U

Heritability of sleep quality in a middle-aged twin sample from Spain

©2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ This document is the Accepted version of a Published Work that appeared in final form in Sleep. To access the final edited and published work see https://doi.org/10.1093/sleep/zsy110Study objectives: Sleep quality is associated with health throughout the life span, which is particularly salient in middle-age and older adulthood. Sleep quality appears to be influenced by both genetic and environmental factors. However, there is still limited information about genetic influences on sleep quality in middle-aged adults, and particularly in those from certain geographical locations. We estimated the magnitude of genetic and environmental influences on sleep quality in a representative sample of middle-aged Spanish twins. Methods: The sample comprised 2150 individuals born between 1939 and 1966, who participate in the Murcia Twin Registry. In order to estimate the heritability of sleep quality variables we performed univariate analyses for the global score on the Pittsburgh sleep quality index and for each of its components. Results: We found moderate but significant heritability (34%) for sleep quality. The genetic variance of the components of the Pittsburgh index ranged from 30% to 45%, except for sleep efficiency for which no genetic influence could be detected. In summary, there was a moderate genetic influence on most dimensions of sleep quality in a sample of adult male and female twins. Shared environment influences were not found. Conclusions: This study adds new information regarding the underlying determinants of sleep quality by providing heritability estimates in a middle-aged population-based representative sample from a geographical location that has not been included in studies of this type previously. This could provide a reference point for future research regarding sleep research in middle-age

Efectos del acotamiento al pastoreo en pastizales de montaña de la Sierra del Segura (Albacete)

Fencing influence on overgrazed ranges of the Sierra del Segura is studied, over two fenced plots, during three years. An important increment of cover in herbaceous plants of elevated pastoral value, mainly perennial legumes, is observated. Uncovered soil ratio decreased by effect of fencing. Woody species of elevated pastoral value increment their cover. An important increment in floral richness and diversity is produced during the first year after fencing. Appearance species ratio decreased after the first year.Se estudia la influencia del acotamiento al pastoreo en pastizales esquilmados de la Sierra del Segura sobre dos parcelas acotadas y muestreadas tres años post-acotamiento. Se observa un importante incremento de cobertura en especies herbáceas de interés pastoral, principalmente de leguminosas vivaces, así como de la cobertura de suelo recubierto de vegetación. Las leñosas incrementan ligeramente su cobertura apareciendo diversas especies de interés pastoral. Se produce un importante incremento en la riqueza y diversidad florísticas durante el primer año post-acotamiento, ralentizándose posteriormente la tasa de aparición de especies

Aprendizaje basado en proyectos (PBL) aplicado a la docencia de sistemas tecnológicos de última generación

El planteamiento general de la docencia de asignaturas cuyo contenido es eminentemente tecnológico, presenta el reto del constante y rápido cambio asociado a los avances en desarrollo tecnológico. Dentro de este contexto, se plantea emplear un método basado en la generación de herramientas que permitan un seguimiento autónomo de los cambios frente a opciones más descriptivas del estado actual de los sistemas estudiados. Sobre esta base, se estudia la idoneidad de un contexto basado en el desarrollo de proyectos que, si bien tienen necesariamente que abordar una temática particular, supone una forma a priori interesante de generar las habilidades necesarias para el aprendizaje autónomo y continuado

Role of MUC1 rs4072037 polymorphism and serum KL-6 levels in patients with antisynthetase syndrome

Biomarkers; Idiopathic inflammatory myopathiesBiomarcadores; Miopatías inflamatorias idiopáticasBiomarcadors; Miopaties inflamatòries idiopàtiquesMucin 1/Krebs von den Lungen-6 (KL-6) is proposed as a serum biomarker of several interstitial lung diseases (ILDs), including connective tissue disorders associated with ILD. However, it has not been studied in a large cohort of Caucasian antisynthetase syndrome (ASSD) patients. Consequently, we assessed the role of MUC1 rs4072037 and serum KL-6 levels as a potential biomarker of ASSD susceptibility and for the differential diagnosis between patients with ILD associated with ASSD (ASSD-ILD +) and idiopathic pulmonary fibrosis (IPF). 168 ASSD patients (149 ASSD-ILD +), 174 IPF patients and 523 healthy controls were genotyped for MUC1 rs4072037 T > C. Serum KL-6 levels were determined in a subgroup of individuals. A significant increase of MUC1 rs4072037 CC genotype and C allele frequencies was observed in ASSD patients compared to healthy controls. Likewise, MUC1 rs4072037 TC and CC genotypes and C allele frequencies were significantly different between ASSD-ILD+ and IPF patients. Additionally, serum KL-6 levels were significantly higher in ASSD patients compared to healthy controls. Nevertheless, no differences in serum KL-6 levels were found between ASSD-ILD+ and IPF patients. Our results suggest that the presence of MUC1 rs4072037 C allele increases the risk of ASSD and it could be a useful genetic biomarker for the differential diagnosis between ASSD-ILD+ and IPF patients.Study partially supported by a grant from Spanish Society of Pulmonology and Thoracic Surgery (SEPAR 474-2017) and from Euronanomed III / Instituto de Salud Carlos III (ISCIII) (AC17/00027) awarded to SC. SR-M is supported by funds of the RETICS Program (RD16/0012/0009) from the ISCIII, co-funded by the European Regional Development Fund. BA-M is recipient of a ‘López Albo’ Post-Residency Programme funded by Servicio Cántabro de Salud. VP-C is supported by a pre-doctoral grant from IDIVAL (PREVAL 18/01). LL-G is supported by funds from IDIVAL (INNVAL 20/06). RP-F is supported by funds of START project (FOREUM18/34). DP-P is a recipient of a Río Hortega programme fellowship from the ISCIII, co-funded by the European Social Fund (ESF, ‘Investing in your future’) (CM20/00006). OG is staff personnel of Xunta de Galicia (Servizo Galego de Saude (SERGAS)) through a research-staff stabilization contract (ISCIII/SERGAS) and his work is funded by ISCIII and the European Union FEDER fund (RD16/0012/0014 (RIER) and PI17/00409). He is beneficiary of project funds from the Research Executive Agency (REA) of the European Union in the framework of MSCA-RISE Action of the H2020 Programme, Project 734899—Olive-Net. RL-M is a recipient of a Miguel Servet type I programme fellowship from the ISCIII, co-funded by the ESF (CP16/00033)

Heritability of Body Mass Index: A comparison between the Netherlands and Spain.

A high body mass index (BMI) is commonly used as an index of overweight and obesity. There is persistent evidence of high heritability for variation in BMI, but the effects of common environment appear inconsistent across different European countries. Our objective was to compare genetic and environmental effects on BMI in a sample of twins from two different European countries with distinct population and cultural backgrounds. We analysed data of adult female twins from the Netherlands Twin Register (222 monozygotic [MZ] and 103 dizygotic [DZ] pairs) and the Murcia Twin Register (Spain; 202 MZ and 235 DZ pairs). BMI was based on self-reported weight and height. Dutch women were taller and heavier, but Spanish women had a significantly higher mean BMI. The age related weight increase was significantly stronger in the Spanish sample. Genetic analyses showed that genetic factors are the main contributors to variation in height, weight, and BMI, within both countries. For height and weight, estimates of genetic variances did not differ, but for height, the estimate for the environmental variance was significantly larger in Spanish women. For BMI, both the genetic and the environmental variance components were larger in Spanish than in Dutch women

Red de coordinación de la implantación del primer curso del Grado en Ingeniería en Sonido e Imagen

El profesorado de la red docente realizó durante el curso 2009/10 un proyecto para la planificación de las asignaturas del primer curso del Grado en Ingeniería en Sonido e Imagen de la Escuela Politécnica Superior, y nos toca ahora la puesta a punto del primer curso del Grado. En el marco creado por los nuevos estudios dentro del EEES, el proyecto tiene como objetivo principal es el seguimiento, coordinación, evaluación, y mejora de la planificación realizada el curso anterior ya con las nuevas experiencias.Los autores desean agradecer las ayudas institucionales recibidas tanto por parte de la Universidad de Alicante y la Escuela Politécnica Superior (a través del instituto de Ciencias de la Educación y del Vicerrectorado de Planificación Estratégica y Calidad) y el Grupo de Innovación Tecnológica y Educativa de la Universidad de Alicante (GITE-09006-UA)

Seguimiento de la coordinación: Evaluación continua del curso 1 del Grado de Telecomunicación de la EPS

La evaluación de las asignaturas en los grados, basados en el EEES, se realiza de forma continua en todas las asignaturas. Desde la puesta en marcha de los grados, la evaluación continua ha sido criticada por la carga de Trabajo que representa tanto para el alumnado como el profesorado. Hace unos años realizamos un proyecto colaborativo para la realización del Calendario de evaluación continua por curso académico. Dicho calendario da una muestra de las evaluaciones y controles que se realizan en las asignaturas de cada curso y cada semestre, sin tener en cuenta las prácticas. Sin embargo, las actividades de evaluación han ido cambiando y en ocasiones no se detallan en la guía docente. Esto no permite realizar un calendario de evaluación real del curso. El objetivo de este proyecto ha sido coordinar todas las evaluaciones, controles, y actividades obligatorias o voluntarias de evaluación en todas las asignaturas del curso 1