386 resultados para 1513
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En cubierta: Materiales de uso interno y Reforma de las enseñanzas medias 2õ ciclo
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Resumen basado en el de la publicación
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Segundo premio de la Convocatoria de Premios Nacionales de Investigación e Innovación Educativa 2007, modalidad Investigación Educactiva
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Resumen basado en el de la publicación
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Contiene fotografías
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Se presenta un extracto del proyecto de ley de reforma de la Ley de Enseñanza Primaria, en la que se declara obligatoria y gratuita para todos los españoles una educación básica de ocho cursos, desde los seis a los catorce años.
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Contiene fotografías de maquinarias, de algunos momentos de las visitas realizadas por los Catedráticos y de los pantanos visitados
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Mención Honorífica de los Premos a la Innovación Educativa 2000. En portada: Programa de educación compensatoria
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Mención Honorífica de los Premios a la Innovación Educativa del CIDE 2000
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El artículo forma parte de un monográfico de la revista dedicado al currículo de Educación Primaria.
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The purpose of this study was to evaluate current materials given to parents of new hearing aid users.
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The effects of uniform straining and shearing on the stability of a surface quasi-geostrophic temperature filament are investigated. Straining is shown to stabilize perturbations for wide filaments but only for a finite time until the filament thins to a critical width, after which some perturbations can grow. No filament can be stabilized in practice, since there are perturbations that can grow large for any strain rate. The optimally growing perturbations, defined as solutions that reach a certain threshold amplitude first, are found numerically for a wide range of parameter values. The radii of the vortices formed through nonlinear roll-up are found to be proportional to θ/s, where θ is the temperature anomaly of the filament and s the strain rate, and are not dependent on the initial size of the filament. Shearing is shown to reduce the normal-mode growth rates, but it cannot stabilize them completely when there are temperature discontinuities in the basic state; smooth filaments can be stabilized completely by shearing and a simple scaling argument provides the shear rate required. Copyright © 2010 Royal Meteorological Society
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Background: The importance of understanding which environmental and biological factors are involved in determining individual differences in physiological response to stress is widely recognized, given the impact that stress has on physical and mental health. Methods: The child-mother attachment relationship and some genetic polymorphisms (5-HTTLPR, COMT and GABRA6) were tested as predictors of salivary cortisol and alpha amylase concentrations, two biomarkers of hypothalamic-pituitary-adrenocortical (HPA) axis and sympathetic adrenomedullary (SAM) system activity, during the Strange Situation (SS) procedure in a sample of more than 100 healthy infants, aged 12 to 18 months. Results: Individual differences in alpha amylase response to separation were predicted by security of attachment in interaction with 5-HTTLPR and GABRA6 genetic polymorphisms, whereas alpha amylase basal levels were predicted by COMT x attachment interaction. No significant effect of attachment, genetics and their interaction on cortisol activity emerged. Conclusions: These results help to disentangle the role played by both genetic and environmental factors in determining individual differences in stress response in infancy. The results also shed light on the suggestion that HPA and SAM systems are likely to have different characteristic responses to stress.