Tipos de aprendizaje en estudiantes de enseñanza media técnico profesional : Un análisis desde la teoría de David Ausubel

Este artículo presenta los hallazgos de una investigación de campo, no experimental, observacional, correlacional, básica, transeccional, de datos mixtos, micro sociológica, dando lugar a un estudio de encuestas. El objeto de estudio son los tipos de aprendizaje y la unidad de análisis fueron 529 estudiantes de enseñanza media Técnico Profesional de NM3 y NM4 entre 16 y 21 años de edad; su propósito es conocer el impacto del aprendizaje memorístico, guiado, autónomo y significativo en el nivel de logro y resultados de aprendizaje del plan de estudio diferenciado, basado en el pensamiento de David Ausubel, asociado a las distintas Areas Económicas y especialidades (MINEDUC, 1998) donde se forman profesionalmente los sujetos de estudio.Para reunir datos se aplicó el test TADA - DO2; la prueba presenta un índice de confiabilidad de 0,911 según Cronbach. Desde los aciertos se puede aseverar desde el enjuiciamiento de la hipótesis nula, que hay asociación significativa a = 0,05) entre los tipos de aprendizaje y los aprendizajes esperados del plan de formación profesional diferenciado tanto para el género masculino como femenino.Indicar que la formación de técnicos de nivel medio para una inserción laboral exitosa de sus titulados, resulta ser una tarea compleja

Data from the EPICA Dome C ice core EDC

The Antarctic Vostok ice core provided compelling evidence of the nature of climate, and of climate feedbacks, over the past 420,000 years. Marine records suggest that the amplitude of climate variability was smaller before that time, but such records are often poorly resolved. Moreover, it is not possible to infer the abundance of greenhouse gases in the atmosphere from marine records. Here we report the recovery of a deep ice core from Dome C, Antarctica, that provides a climate record for the past 740,000 years. For the four most recent glacial cycles, the data agree well with the record from Vostok. The earlier period, between 740,000 and 430,000 years ago, was characterized by less pronounced warmth in interglacial periods in Antarctica, but a higher proportion of each cycle was spent in the warm mode. The transition from glacial to interglacial conditions about 430,000 years ago (Termination V) resembles the transition into the present interglacial period in terms of the magnitude of change in temperatures and greenhouse gases, but there are significant differences in the patterns of change. The interglacial stage following Termination V was exceptionally long - 28,000 years compared to, for example, the 12,000 years recorded so far in the present interglacial period. Given the similarities between this earlier warm period and today, our results may imply that without human intervention, a climate similar to the present one would extend well into the future.

(Figures S2a-c) Phase diagrams of the upper crust, the lower crust and the upper mantle based on averaged compositions of the oceanic crust and mantle

The age of the subducting Nazca Plate off Chile increases northwards from 0 Ma at the Chile Triple Junction (46°S) to 37 Ma at the latitude of Valparaíso (32°S). Age-related variations in the thermal state of the subducting plate impact on (a) the water influx to the subduction zone, as well as on (b) the volumes of water that are released under the continental forearc or, alternatively, carried beyond the arc. Southern Central Chile is an ideal setting to study this effect, because other factors for the subduction zone water budget appear constant. We determine the water influx by calculating the crustal water uptake and by modeling the upper mantle serpentinization at the outer rise of the Chile Trench. The water release under forearc and arc is determined by coupling FEM thermal models of the subducting plate with stability fields of water-releasing mineral reactions for upper and lower crust and hydrated mantle. Results show that both the influx of water stored in, and the outflux of water released from upper crust, lower crust and mantle vary drastically over segment boundaries. In particular, the oldest and coldest segments carry roughly twice as much water into the subduction zone as the youngest and hottest segments, but their release flux to the forearc is only about one fourth of the latter. This high variability over a subduction zone of < 1500 km length shows that it is insufficient to consider subduction zones as uniform entities in global estimates of subduction zone fluxes. This article is protected by copyright. All rights reserved.