Search results for " física"
showing 10 items of 920 documents
Predictive factors of physical activity in Spanish students based on their weight status
2018
El objetivo del presente estudio fue comparar la motivación autodeterminada hacia el ejercicio físico, autoconcepto físico, barreras hacia la actividad física e intención de ser físicamente activo entre adolescentes con y sin sobrepeso/obesidad. Una muestra de 333 escolares, de 13 a 16 años, participaron en esta investigación. Para la medición de las distintas variables se utilizaron instrumentos validados: Índice de masa corporal, Behavioral Regulation in Exercise Questionnaire, Physical Self Description Questionnaire, Autoinforme de Barreras para la Práctica de Ejercicio Físico e Intention to Be Physically Active Questionnaire. Los resultados mostraron diferencias estadísticamente signifi…
El currículum oculto visual en los libros de texto de Educación Física: Una revisión sistemática
2021
RESUMEN: El presente estudio tiene como objetivo principal revisar las diferentes investigaciones relacionadas con el análisis de las imágenes de los libros de texto de Educación Física (EF) en la enseñanza obligatoria del sistema educativo español, en el período que comprende las leyes educativas de la Ley Orgánica 1/1990 de Ordenación General del Sistema Educativo (LOGSE), la Ley Orgánica 2/2006 de Educación (LOE) y la Ley Orgánica 8/2013 para la Mejora de la Calidad Educativa (LOMCE). Para ello se realizó una búsqueda sistemática siguiendo las pautas de PRISMA en las bases de datos de Dialnet, Google Scholar, Redalyc, Scielo, Scopus y Web of Science, seleccionando 20 artículos de 253 enc…
Aprendizaje basado en Proyectos en Educación Física en Primaria, un estudio de revisión
2019
espanolLa inclusion de las competencias en el sistema educativo espanol demanda la aplicacion de nuevas metodologias de aprendizaje, centradas en el alumnado; siendo las metodologias activas y concretamente el Aprendizaje basado en Proyectos (ABP), una oportunidad unica para responder a estos nuevos retos. El objetivo de este trabajo consiste en revisar, recopilar y analizar la bibliografia relacionada con el ABP en el area de Educacion Fisica (EF), en la etapa de Educacion Primaria (EP). Se realizo una revision documental en las siguientes bases de datos: Dialnet, ERIC, Google Academico, Redalyc, SciElo, Scopus, Sport Discus y Web of Science, seleccionando los documentos publicados entre 2…
Gravitational-wave parameter inference using Deep Learning
2021
We explore machine learning methods to detect gravitational waves (GW) from binary black hole (BBH) mergers using deep learning (DL) algorithms. The DL networks are trained with gravitational waveforms obtained from BBH mergers with component masses randomly sampled in the range from 5 to 100 solar masses and luminosity distances from 100 Mpc to, at least, 2000 Mpc. The GW signal waveforms are injected in public data from the O2 run of the Advanced LIGO and Advanced Virgo detectors, in time windows that do not coincide with those of known detected signals, and the data from each detector in the Advanced LIGO and Advanced Virgo network is combined into a unique RGB image. We show that a clas…
Difficulties in learning and teaching of Quantum Physics in High School
2013
Quantum Physics is a very important part of Physics. In this paper we analyze its teaching and learning in high school and we show the students’ main difficulties, particularly the ontological and epistemological. This article presents some reasoned arguments against traditional methods to teach Quantum Physics. Finally, a new approach to quantum Physics teaching is showed.
Lactate level and handgrip test in migraine and fibromyalgia after self-myofascial release treatment
2019
The Aim of the study was to determine the effect of self-myofascial release (SMFR) treatment on handgrip test score in patients with fibromyalgia and migraine, investigating also if the lactate levels influenced the result. Twenty-five subjects affected by migraine (age 49.7±12.5; height 164.9±6.62 cm; weight 68.6±16.9 kg) and ten subjects affected by fibromyalgia (age 43.7±21.2; height 158±5.65 cm; weight 70±28.9 kg) were enrolled in the study. The assessments included a handgrip test, in order to evaluate isometric strength of both hands and forearm muscles and the lactate levels evaluation. The treatment was performed in the three most painful trigger points indicated from subjects as to…
Physical activity according to gender in Brazilian Physical Education textbooks
2023
One of the purposes of Physical Education is promoting physical activity through equal opportunities for boys and girls, accepting diversity. Aware of the power of the image for the reproduction of gender stereotypes, this research aimed to analyse its existence in Brazilian textbooks. The study was empirical, descriptive and comparative among analysed books that used content analysis and inferential statistics. The sample comprised 1327 images. These images concerned 10 Physical Education textbooks published by four Brazilian publishers who edited them as teacher's guides for primary education between 2017 and 2018. A content analysis was carried out through the adaptation of the SAIMEF to…
Indications of a Si-rich bilateral jet of ejecta in the Vela SNR observed with XMM-Newton
2017
Context. The Vela supernova remnant displays several ejecta, which are fragment-like features protruding beyond the front of its primary blast shock wave. They appear to be "shrapnel", bowshock-shaped relics of the supernova explosion. One of these pieces of shrapnel (A), located in the northeastern edge of the remnant, is peculiar because its X-ray spectrum exhibits a high Si abundance, in contrast to the other observed ejecta fragments, which show enhanced O, Ne, and Mg abundances. Aims. In this Letter we present the analysis of another ejecta fragment located opposite to shrapnel A with respect to the center of the shell, in the southwestern boundary of the remnant, named shrapnel G. We …
Estrategias emocionales en educación física a través del aprendizaje servicio: aplicación del programa siente jugando en alumnado de primaria
2019
Las emociones, la inteligencia emocional y la competencia socioemocional son algunos de los contenidos transversales que podemos desarrollar desde la Educación Física escolar. El juego motor es una fuente de estímulos y vivencias que favorece el desarrollo de las estructuras físicas y cerebrales que el alumnado de Primaria utilizará en su presente y futuro. El objeto de este estudio fue analizar las estrategias utilizadas para la resolución de conflictos tras la puesta en práctica de un programa de intervención denominado “Siente Jugando”, haciendo uso de la metodología Aprendizaje Servicio. La muestra estuvo formada por 93 participantes de Educación Primaria Obligatoria (EPO), de edades co…
Photonic fractional Fourier transformer with a single dispersive device
2013
In this work we used the temporal analog of spatial Fresnel diffraction to design a temporal fractional Fourier transformer with a single dispersive device, in this way avoiding the use of quadratic phase modulators. We demonstrate that a single dispersive passive device inherently provides the fractional Fourier transform of an incident optical pulse. The relationships linking the fractional Fourier transform order and scaling factor with the dispersion parameters are derived. We first provide some numerical results in order to prove the validity of our proposal, using a fiber Bragg grating as the dispersive device. Next, we experimentally demonstrate the feasibility of this proposal by us…