Características psicométricas del cuestionario "Características Psicológicas relacionadas con el Rendimiento Deportivo" (CPRD) en jugadores de baloncesto españoles

INTRODUCCIÓN: La evaluación de las variables psicológicas implicadas en el rendimiento deportivo es un requisito fundamental de la evaluación integral del deportista de competición, junto con la evaluación de la condición física y del funcionamiento técnico y táctico. Los cuestionarios pueden ser herramientas útiles cuando están elaborados específicamente para el ámbito del deporte y las características de los deportistas, y se complementan con la entrevista conductual. El cuestionario de Características Psicológicas relacionadas con el Rendimiento Deportivo (CPRD) es el instrumento más utilizado en castellano pero todavía no se dispone de una adaptación para el baloncesto. OBJETIVOS: Estudiar las características psicométricas del CPRD en el baloncesto; e identificar a los jugadores con “perfiles psicológicos de riesgo”, asesorando a estos jugadores y a sus entrenadores sobre el entrenamiento en habilidades psicológicas más adecuado en cada caso. MÉTODO: Participaron 107 jugadores de baloncesto de categorías base (infantil, cadete y juvenil) y senior de un mismo club de baloncesto. Se estudió la consistencia interna del test mediante el coeficiente alfa de Crombach, se elaboró la baremación mediante puntuaciones centiles, y se estudió la relación entre las escalas del CPRD y las variables personales y deportivas de los jugadores. Fueron realizadas entrevistas de evaluación conductual con los jugadores que presentaron “perfiles psicológicos de riesgo”. RESULTADOS: El CPRD-baloncesto tiene una alta consistencia interna (α=0,883), y el baremo presenta puntuaciones centiles que se corresponden con mayores puntuaciones directas, en comparación con los baremos generales del CPRD con deportistas españoles. Se observan diferencias estadísticamente significativas entre diferentes escalas del CPRD y la edad, el género, el puesto de juego y la experiencia deportiva. Fueron identificados 10 jugadores con “perfiles psicológicos de riesgo”, confirmándose 6 de ellos. CONCLUSIONES: El CPRD-baloncesto presenta adecuadas características psicométricas para su utilización con jugadores y clubes similares a los de este estudio; y en particular para la identificación de jugadores con “perfiles psicológicos de riesgo”. PALABRAS CLAVE: Características Psicológicas, Psicometría, Baloncesto, Cuestionarios, Rendimiento Deportivo<br /

Anomalous dissipation mechanism and Hall quantization limit in polycrystalline graphene grown by chemical vapor deposition

Ajuts: it has been performed within the EMRP (European Metrology Research Program), project SIB51, Graphohm. The EMRP is jointly funded by the EMRP participating countries within EURAMET (European association of national metrology institutes) and the European Union.We report on the observation of strong backscattering of charge carriers in the quantum Hall regime of polycrystalline graphene, grown by chemical vapor deposition, which alters the accuracy of the Hall resistance quantization. The temperature and magnetic field dependence of the longitudinal conductance exhibits unexpectedly smooth power-law behaviors, which are incompatible with a description in terms of variable range hopping or thermal activation but rather suggest the existence of extended or poorly localized states at energies between Landau levels. Such states could be caused by the high density of line defects (grain boundaries and wrinkles) that cross the Hall bars, as revealed by structural characterizations. Numerical calculations confirm that quasi-one-dimensional extended nonchiral states can form along such line defects and short circuit the Hall bar chiral edge states

The ESO Distant Cluster Sample: galaxy evolution and environment out to z=1

The ESO Distant Cluster Survey (EDisCS, P.I. Simon D.M. White, LP 166.A-0162) is an ESO large programme aimed at studying clusters and cluster galaxies at z=0.4-1. How different is the evolution of the star formation activity in clusters, in groups and in the field? Does it depend on cluster mass and/or the local galaxy density? How relevant are starburst and post-starburst galaxies in the different environments? Is there an evolution in the galaxies' structures, and if so, is this related to the changes in their star formation activity? These are some of the main questions that have been investigated using the EDisCS dataset.Comment: to appear in The Messenger, issue June 200

Genome wide analysis of gene dosage in 24,092 individuals estimates that 10,000 genes modulate cognitive ability

International audienceGenomic copy number variants (CNVs) are routinely identified and reported back to patients with neuropsychiatric disorders, but their quantitative effects on essential traits such as cognitive ability are poorly documented. We have recently shown that the effect size of deletions on cognitive ability can be statistically predicted using measures of intolerance to haploinsufficiency. However, the effect sizes of duplications remain unknown. It is also unknown if the effect of multigenic CNVs are driven by a few genes intolerant to haploinsufficiency or distributed across tolerant genes as well. Here, we identified all CNVs > 50 kilobases in 24,092 individuals from unselected and autism cohorts with assessments of general intelligence. Statistical models used measures of intolerance to haploinsufficiency of genes included in CNVs to predict their effect size on intelligence. Intolerant genes decrease general intelligence by 0.8 and 2.6 points of intelligence quotient when duplicated or deleted, respectively. Effect sizes showed no heterogeneity across cohorts. Validation analyses demonstrated that models could predict CNV effect sizes with 78% accuracy. Data on the inheritance of 27,766 CNVs showed that deletions and duplications with the same effect size on intelligence occur de novo at the same frequency. We estimated that around 10,000 intolerant and tolerant genes negatively affect intelligence when deleted, and less than 2% have large effect sizes. Genes encompassed in CNVs were not enriched in any GOterms but gene regulation and brain expression were GOterms overrepresented in the intolerant subgroup. Such pervasive effects on cognition may be related to emergent properties of the genome not restricted to a limited number of biological pathways

Architectural acoustic design: Observation of use cases including audio-only and multimodal auralizations

International audienceAuralization technology has reached a satisfactory level of ecological validity, enabling its use in architectural acoustic design. Only recently have the actual uses of auralization in the consulting community been explored, resulting in the identification of a variety of uses, including (1) to present to clients, (2) to test design ideas, (3) as a verification tool, (4) as a verification tool, (5) as a marketing tool, and (6) to improve internal company discussions. Taking advantage of methodologies from ergonomics research, the present study investigates effective uses through the observation of a collaboration project between an acoustic research team and an acoustic consultant, as a case study. Two spaces have been auralized in the context of the conception of a new skyscraper during the design phase of the project. The two spaces faced different problematics: an Atrium for which three different acoustic treatment options were suggested and experienced through multi-modal auralizations and audio-only auralizations of an Auditorium where an intrusive noise was to be acoustically treated. The ergonomic observation and analysis of this project revealed key impediments to the integration of auralization in common acoustic design practices

Development of non-intrusive monitoring for reactive switching of high voltage circuit breaker

High-voltage circuit breakers are among the most important equipments for ensuring the efficient and safe operation of an electric power system. On occasion, circuit breaker operators may wish to check whether equipment is performing satisfactorily and whether controlled switching systems are producing reliable and repeatable stress control. Monitoring of voltage and current waveforms during switching using established methods will provide information about the magnitude and frequency of voltage transients as a result of re-ignitions and restrikes. However, high frequency waveform measurement requires shutdown of circuit breaker and use of specialized equipment. Two utilities, Hydro-Québec in Canada and Powerlink Queensland in Australia, have been working on the development and application of a non-intrusive, cost-effective and flexible diagnostic system for monitoring high-voltage circuit breakers for reactive switching. The proposed diagnostic approach relies on the non-intrusive assessment of key parameters such as operating times, prestrike characteristics, re-ignition and restrike detection. Transient electromagnetic emissions have been identified as a promising means to evaluate the abovementioned parameters non-intrusively.\ud \ud This paper describes two complimentary methods developed concurrently by Powerlink and Hydro-Québec. Also, return of experiences on the application to capacitor bank and shunt reactor switching is presented

THE C70 ARRONAX AND BEAM LINES STATUS

International audienceThe C70 ARRONAX is a high intensity (up to 2x375uA) multi-particle cyclotron aiming at R&D on material and radiolysis and production of radioisotopes. It began its hands-on phase in December 2010, and is currently undergoing beam lines' modification in experimental halls for present and future experiments. Characterisation of the beams at the end of beamlines is of particular importance to determine the capacity of the cyclotron for end-line experimental users. A program of beam characterisation is being performed based in one hand on dedicated diagnostics e.g. beam profilers, faraday cups, alumina foils and in the other hand on a series of Geant4 beam simulations. The out coming results of the measurements, along with the simulations, are detailed in this report for proton and alpha particle beams, as well as the future prospects of the characterisation program

Inhibition Of Degradation Of Extracellular Matrix

International audienceThis paper presents the feasibility of three-dimensional (3D) magnetic resonance (MR) histology of atheromatous coronary lesions in the entire human heart ex vivo using a standard 1.5-T scanner and a 12-mm high-temperature superconducting (HTS) surface coil. The HTS coil was a five-turn transmission-line resonator operated at 77 K, affording a signal-to-noise ratio (SNR) gain of about ninefold as compared to a similar, room-temperature copper coil. Local microscopy at the surface of an explanted, entire heart was achieved by a 3D spoiled gradient echo sequence and assessed by comparison with conventional histology. One hundred and twenty four adjacent cross sections of the coronary artery, with voxels of 59 × 59 × 100 µm 3 and an SNR of about 20, were obtained in 25 min. Consecutive data sets were combined to reconstruct extended views along the artery. Compared to histology, MR microscopy allowed precise nondestructive 3D depiction of the architecture of the atheromatous plaques. This is the first report of microscopic details (less than 10 −3 mm 3 voxels) of diseased arteries obtained in an entire human heart preserving the arterial integrity and the spatial geometry of atheroma. This noninvasive microscopy approach using a HTS surface coil might be applied in vivo to study the architecture and components of superficial human structures, using routine MR scanners

Grinding up wheat: A massive loss of nucleotide diversity since domestication

Several demographic and selective events occurred during the domestication of wheat from the allotetraploid wild emmer (Triticum turgidum ssp. dicoccoides). Cultivated wheat has since been affected by other historical events. We analyzed nucleotide diversity at 21 loci in a sample of 10 1 individuals representing 4 taxa corresponding to representative steps in the recent evolution of wheat (wild, domesticated, cultivated durum, and bread wheats) to unravel the evolutionary history of cultivated wheats and to quantify its impact on genetic diversity. Sequence relationships are consistent with a single domestication event and identify 2 genetically different groups of bread wheat. The wild group is not highly polymorphic, with only 212 polymorphic sites among the 21,720 bp sequenced, and, during domestication, diversity was further reduced in cultivated forms-by 69% in bread wheat and 84% in durum wheat-with considerable differences between loci, some retaining no polymorphism at all. Coalescent simulations were performed and compared with our data to estimate the intensity of the bottlenecks associated with domestication and subsequent selection. Based oil our 2 1 locus analysis, the average intensity of domestication bottleneck was estimated at about 3-giving a population size for the domesticated form about one third that of wild dicoccoides. The most severe bottleneck, with an intensity of about 6, occurred in the evolution of durum wheat. We investigated whether some of the genes departed from the empirical distribution of most loci, suggesting that they might have been selected during domestication or breeding. We detected a departure from the null model of demographic bottleneck for the hypothetical gene HgA. However, the atypical pattern of polymorphism at this locus might reveal selection on the linked locus Gsp/A, which may affect grain softness-an important trait for end-use quality in wheat