972 resultados para Confederación (1852-1862)
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Signatur des Originals: S 36/F00870
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[Paulus Cassel]
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Los nombres de José Martí, Eugenio María de Hostos, Gregorio Luperón y Ramón Emeterio Betances sintetizan las luchas llevadas adelante, durante el siglo XIX, para conquistar la independencia y las libertades en la región del Caribe colonizada por España. Reconstruimos algunos de los episodios de esa lucha a través de los escritos de Ramón Emeterio Betances, «El Antillano». Tras una breve introducción biográfica y contextual, la exposición se ordena en torno a dos pares de ideas centrales de su pensamiento: las de independencia y confederación antillana, por una parte, y las de defensa de la raza negra y abolición de la esclavitud, por otra. Aunque las presentamos separadamente, ellas resultan inescindibles en el conjunto de su producción.
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An integrated instrument package for measuring and understanding the surface radiation budget of sea ice is presented, along with results from its first deployment. The setup simultaneously measures broadband fluxes of upwelling and downwelling terrestrial and solar radiation (four components separately), spectral fluxes of incident and reflected solar radiation, and supporting data such as air temperature and humidity, surface temperature, and location (GPS), in addition to photographing the sky and observed surface during each measurement. The instruments are mounted on a small sled, allowing measurements of the radiation budget to be made at many locations in the study area to see the effect of small-scale surface processes on the large-scale radiation budget. Such observations have many applications, from calibration and validation of remote sensing products to improving our understanding of surface processes that affect atmosphere-snow-ice interactions and drive feedbacks, ultimately leading to the potential to improve climate modelling of ice-covered regions of the ocean. The photographs, spectral data, and other observations allow for improved analysis of the broadband data. An example of this is shown by using the observations made during a partly cloudy day, which show erratic variations due to passing clouds, and creating a careful estimate of what the radiation budget along the observed line would have been under uniform sky conditions, clear or overcast. Other data from the setup's first deployment, in June 2011 on fast ice near Point Barrow, Alaska, are also shown; these illustrate the rapid changes of the radiation budget during a cold period that led to refreezing and new snow well into the melt season.
Meteorological observations during EUROPA cruise from Batavia to Brouwershaven started at 1852-08-04
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El propósito de este texto es mostrar las contradicciones del proyecto de modernización escolar en el contexto del liberalismo decimonónico. Este proyecto político y cultural se encuentra en vías de aislarse de manera definitiva, en la figura de José Victorino Lastarria, de la dirección que el proyecto original planteaba, en términos de inclusión y de democratización. Por el contrario, el discurso pedagógico del autor chileno se advierte un desplazamiento hacia la abstracción conceptual y su alejamiento de los lectores de las escuelas