Estudio de la distribución de esfuerzos verticales en rellenos compactados en comparación con la establecida en el CCDSP-95

Ingeniero (a) CivilPregrad

Sediment dispersal in the northwestern Adriatic Sea

Author Posting. © American Geophysical Union, 2008. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 113 (2008): C11S03, doi:10.1029/2006JC003868.Sediment dispersal in the Adriatic Sea was evaluated using coupled three-dimensional circulation and sediment transport models, representing conditions from autumn 2002 through spring 2003. The calculations accounted for fluvial sources, resuspension by waves and currents, and suspended transport. Sediment fluxes peaked during southwestward Bora wind conditions that produced energetic waves and strengthened the Western Adriatic Coastal Current. Transport along the western Adriatic continental shelf was nearly always to the south, except during brief periods when northward Sirocco winds reduced the coastal current. Much of the modeled fluvial sediment deposition was near river mouths, such as the Po subaqueous delta. Nearly all Po sediment remained in the northern Adriatic. Material from rivers that drain the Apennine Mountains traveled farther before deposition than Po sediment, because it was modeled with a lower settling velocity. Fluvial sediment delivered to areas with high average bed shear stress was more highly dispersed than material delivered to more quiescent areas. Modeled depositional patterns were similar to observed patterns that have developed over longer timescales. Specifically, modeled Po sediment accumulation was thickest near the river mouth with a very thin deposit extending to the northeast, consistent with patterns of modern sediment texture in the northern Adriatic. Sediment resuspended from the bed and delivered by Apennine Rivers was preferentially deposited on the northern side of the Gargano Peninsula, in the location of thick Holocene accumulation. Deposition here was highest during Bora winds when convergences in current velocities and off-shelf flux enhanced delivery of material to the midshelf.The authors are grateful for funding and support from the Office of Naval Research’s Coastal Geosciences and Marine Modeling programs, the U.S. Geological Survey, and NATO’s SACLANT-CEN

Proyecto estructura industrial de proceso

Ingeniero CivilMagíster en Ingeniería CivilPregradoMaestrí

Tecnologías limpias a nivel de la Administración Distrital

Los dos ejes actuantes sobre la conciencia ecológica empresarial para impulsar la ecoeficiencia y la producción limpia son los usuarios o consumidores y los oferentes generadores de tecnologí

Sociocultural approach to digital reading in first year university students

El objetivo de este estudio fenomenográfico es mostrar las prácticas de lectura digital, frente al desarrollo de una tarea académica, por parte de estudiantes de primer año de universidad. Para ello se recogieron datos a través de un cuestionario, una actividad y una entrevista semi- estructurada, para evaluar las categorías de acceso, integración y evaluación de textos digitales. A esto se le añade la revisión de los resultados de Colombia en la prueba PISA, la revisión teórica de conceptos como lectura, TIC, lectura digital, alfabetización digital, y algunas aproximaciones socioculturales frente al tema. La investigación da cuenta de la importancia de tener en cuenta aspectos socioculturales para la evaluación de lectura y la comparación de las prácticas utilizadas, por estudiantes de diferentes facultades, en lectura digital en función de una tarea. Se encontró que las prácticas de las participantes varían según la carrera. Sin embargo, no son suficientes para considerarlas significativas.The objective of this phenomenological study is to show the practices of digital reading, as apposed to the development of an academic task, by first-year university students. For this, data was collected through a questionnaire, an activity and a semi-structured interview, to evaluate the categories of access, integration and evaluation of digital texts. To this is added the review of the results of Colombia in the PISA test, the theoretical review of concepts such as reading, ICT, digital reading, digital literacy, and some socio-cultural approaches to the subject. The research realizes the importance of taking into account socio-cultural aspects for the evaluation of reading and the comparison of the practices used, by students of different faculties, indigital reading based on a task. It was found that the practices of the participants vary by race. However, they are not enough to be considered significant.Psicólogo (a)Pregrad