Horizontal profiles of longwave and shortwave radiation components over sea ice near Barrow, Alaska during the 2011 melt

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.

El arte mimético como forma de conocimiento : Las críticas de Jean-Marie Schaeffer a Platón

Fil: Rosengurt, Chantal Paula. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Panorama de la literatura griega en Iberoamérica (1767-1850)

En este trabajo se estudian los escasos testimonios que encontramos de la literatura griega en Iberoamérica, desde la expulsión de los jesuitas (1767) hasta mediados del siglo XIX, coincidiendo con los últimos años del periodo colonial español y los primeros de la independencia de la mayoría de los países sudamericanos. El conocimiento de los autores griegos es indirecto, salvo contadas excepciones, y el estudio del griego avanza tímidamente en algunos países, coincidiendo también con el tipo de país que los próceres de la patria pretenden construir

Ernesto J. A. Maeder: "Los bienes de los jesuitas. Destino y administración de sus temporalidades en el Río de la Plata 1767-1813", Resistencia, Instituto de Investigaciones Geohistóricas, CONICET, 2001 (394 páginas)

Fil: Troisi Meleán, Jorge Cristian. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

La mujer de letras o la letraherida. Discursos y representaciones sobre la mujer escritora en el siglo XIX, de Pura Fernández y Marie-Linda Ortega (eds.)

Fil: Bonatto, Adriana Virginia. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.