1,135 research outputs found

    La computadora en la educación en el siglo XXI. Un mapeo científico de la literatura en Web of Science

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    Computers have evolved over the course of history through successive generations. The impact of this technology on society has revolutionised the way we communicate, participate in the political life of a country or access education. The potential of the computer in the field of education has been highlighted by last year's global event. The objective of the study is to analyze the literature on the term computer in the field of education (CoMPU-EdU) in the Web of Science database. for this, a bibliometric methodology based on a scientific mapping of the publications on the state of the question has been used. It has worked with an analysis unit of 10939 documents. The results indicate that research related to "computer" in education is mainly presented in English and in research articles. In addition, the journal with the most manuscripts on this line of research is Computer & Education. The analysis of the scientific evolution of this line of research shows that studies are mainly focused on teaching and learning processes, as well as on students' attitudes towards computer use. It can be concluded that the CoMPU-EdU investigations are currently at an inflection point, given that there is a downward trend, as far as production volume is concerned. The scientific community is beginning to focus its research on other more specific branches of computer, such as augmented reality or robotics. In addition, the scientific production of CoMPU-EdU in the 21th century focuses mainly on the attitudes of the members involved in the pedagogical act, on gender differences, on the elements of the teaching and learning processes - pedagogical methods and evaluation - and in the attention of students with special educational needs. Probably in the future the lines of research will begin to focus on self-regulation of learning, computational-thinking and gamificationLas computadoras han evolucionado a lo largo de la historia a través de generaciones sucesivas. El impacto de esta tecnología en la sociedad ha revolucionado la forma en que nos comunicamos, participamos en la vida política de un país o accedemos a la educación. El potencial de la computadora en el campo de la educación ha sido destacado por el evento global del año pasado. El objetivo del estudio es analizar la literatura sobre el término informática en el campo de la educación (CoMPU-EdU) en la base de datos de Web of Science. Para ello se ha utilizado una metodología bibliométrica basada en un mapeo científico de las publicaciones sobre el estado de la cuestión. ha trabajado con una unidad de análisis de 10939 documentos. Los resultados indican que la investigación relacionada con la "computadora" en la educación se presenta principalmente en inglés y en artículos de investigación. Además, la revista con más manuscritos en esta línea de investigación es Computer & Education. El análisis de la evolución científica de esta línea de investigación muestra que los estudios se centran principalmente en los procesos de enseñanza y aprendizaje, así como en las actitudes de los estudiantes hacia el uso de la computadora. Se puede concluir que las investigaciones CoMPU-EdU se encuentran actualmente en un punto de inflexión, dado que existe una tendencia a la baja, en lo que se refiere al volumen de producción. La comunidad científica empieza a centrar su investigación en otras ramas más específicas de la informática, como la realidad aumentada o la robótica. Además, la producción científica de CoMPU-EdU en el siglo XXI se centra principalmente en las actitudes de los integrantes involucrados en el acto pedagógico, en las diferencias de género, en los elementos de los procesos de enseñanza y aprendizaje - métodos pedagógicos y de evaluación - y en la atención de alumnos con necesidades educativas especiales. Probablemente en el futuro las líneas de investigación comiencen a centrarse en la autorregulación del aprendizaje, el pensamiento computacional y la gamificació

    Control individualizado de cerdos ibéricos "in vivo" en campo y sobre la canal en matadero mediante tecnología NIRS

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    El objetivo de este trabajo es la puesta a punto y optimización de la tecnología NIRS para el control del cerdo Ibérico tanto en campo sobre el animal vivo, ya que es una técnica completamente inocua para el animal, como sobre la canal en el matadero, lo cual permitirá consolidar un sistema de trazabilidad basado en sensores no destructivos y rápidos

    Temporal multiplexing with adaptive optics for simultaneous vision.

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    We present and test a methodology for generating simultaneous vision with a deformable mirror that changed shape at 50 Hz between two vergences: 0 D (far vision) and -2.5 D (near vision). Different bifocal designs, including toric and combinations of spherical aberration, were simulated and assessed objectively. We found that typical corneal aberrations of a 60-year-old subject changes the shape of objective through-focus curves of a perfect bifocal lens. This methodology can be used to investigate subjective visual performance for different multifocal contact or intraocular lens designs

    Simulation of the wave evolution and power capture of an oscillating wave surge converter

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    For oscillating wave surge converters (OWSC) the incident wave field is changed due to the movement of the flap structure. A key component influencing this motion response is the Power Take-Off (PTO) system used. This paper examines the relationship between incident waves and the perturbed fluid field near the flap using the Computational Fluid Dynamics method by using Reynolds Averaged Navier-Stokes (RANS) equations. Further, it investigates the influence of a PTO system in the energy extracted from regular waves. Whilst this wave evolution is not significant in the effective power captured by a unit device, it is of great importance when performing in arrays as neighbouring devices may influence each other

    Building the genomic nation: ‘Homo Brasilis’ and the ‘Genoma Mexicano’ in comparative cultural perspective

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    This is the final version of the article. Available from SAGE Publications via the DOI in this record.This article explores the relationship between genetic research, nationalism and the construction of collective social identities in Latin America. It makes a comparative analysis of two research projects – the ‘Genoma Mexicano’ and the ‘Homo Brasilis’ – both of which sought to establish national and genetic profiles. Both have reproduced and strengthened the idea of their respective nations of focus, incorporating biological elements into debates on social identities. Also, both have placed the unifying figure of the mestizo/mestiço at the heart of national identity constructions, and in so doing have displaced alternative identity categories, such as those based on race. However, having been developed in different national contexts, these projects have had distinct scientific and social trajectories: in Mexico, the genomic mestizo is mobilized mainly in relation to health, while in Brazil the key arena is that of race. We show the importance of the nation as a frame for mobilizing genetic data in public policy debates, and demonstrate how race comes in and out of focus in different Latin American national contexts of genomic research, while never completely disappearing.This article arises out of two projects: ‘Race, genomics and mestizaje (mixture) in Latin America: a comparative approach’ funded by the ESRC (grant RES-062-23-1914) and ‘Public engagement with genomic research and race in Latin America’ funded by The Leverhulme Trust (grant RPG-044)

    Análisis de los factores formadores y distribución de los suelos en la Sierra del Rayo (Granada)

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    Se realiza un análisis del medio físico: Relieve, Material original y Clima de los suelos que existen en la Sierra del Rayo, así como una cartografía detallada de los mismos, expresando las unidades de suelo que se contemplan en la zona.It has been made an analysis of the Physical medium (relief, parent material and climate) on the soils of Sierra del Rayo (Granada), which its detailed cartography, expressing also the soil units which appear in the zone

    Simulation Study of Chic -> J/Psi + gamma Detection with J/Psi -> e+ e- in pp Collisions

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    We present Monte Carlo preliminary results about the feasibility to detect the Chic family in p-p collisions at 14 TeV in the ALICE Central Barrel at CERN LHC. The Chic1 and Chic2 were forced to decay in the channel J/Psi + gamma -> e+ e- + gamma and were merged with a proton-proton non-biased collision. After MonteCarlo transport and simulation of the detector response, the e+, e- and converted gamma were reconstructed and identified in the ALICE ITS, TPC and TRD detectors. Separate signals corresponding to gamma from Chic1 and from Chic2 were observed. The position and relative weight of the fit to gaussians agreed with the input values within the statistical limits. Similar studies will be done for Pb-Pb collisions

    Sublittoral soft bottom communities and diversity of Mejillones Bay in northern Chile (Humboldt Current upwelling system)

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    The macrozoobenthos of Mejillones Bay (23°S; Humboldt Current) was quantitatively investigated over a 7-year period from austral summer 1995/1996 to winter 2002. About 78 van Veen grab samples taken at six stations (5, 10, 20 m depth) provided the basis for the analysis of the distribution of 60 species and 28 families of benthic invertebrates, as well as of their abundance and biomass. Mean abundance (2,119 individuals m-2) was in the same order compared to a previous investigation; mean biomass (966 g formalin wet mass m-2), however, exceeded prior estimations mainly due to the dominance of the bivalve Aulacomya ater. About 43% of the taxa inhabited the complete depth range. Mean taxonomic Shannon diversity (H', Log e) was 1.54 ± 0.58 with a maximum at 20 m (1.95 ± 0.33); evenness increased with depth. The fauna was numerically dominated by carnivorous gastropods, polychaetes and crustaceans (48%). About 15% of the species were suspensivorous, 13% sedimentivorous, 11% detritivorous, 7% omnivorous and 6% herbivorous. Cluster analyses showed a significant difference between the shallow and the deeper stations. Gammarid amphipods and the polychaete family Nephtyidae characterized the 5-mzone, the molluscs Aulacomya ater, Mitrella unifasciata and gammarids the intermediate zone, while the gastropod Nassarius gayi and the polychaete family Nereidae were most prominent at the deeper stations. The communities of the three depth zones did not appear to be limited by hypoxia during non-El Niño conditions. Therefore, no typical change in community structure occurred during El Niño 1997–1998, in contrast to what was observed for deeper faunal assemblages and hypoxic bays elsewhere in the coastal Humboldt Current system
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