872 resultados para Gajdusek, D. Carleton (Daniel Carleton), 1923-2008.
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Se parte del análisis de la situación en la que se encuentran los estudiantes de Esmeraldas (Ecuador) para tratar de contribuir a la transformación de esa realidad. Para ello se plantean tres objetivos: conocer de una manera precisa las demandas de los estudiantes de décimo año de la zona de influencia de la Unidad Educativa 'San Daniel Comboni' con respecto al bachillerato; desarrollar una propuesta educativa, en el nivel de Bachillerato en la Unidad Educativa 'San Daniel Comboni' ajustándose a las demandas y necesidades de los futuros estudiantes; y por último se pretende realiza una propuesta de orientación vocacional que les permita a los padres y estudiantes definir su futuro profesional. Para la realización del estudio de necesidades se necesita recabar información entres campos del saber, PedagogÃa, PsicologÃa y SociologÃa, en todo lo que se refiere a las variables socio-educativas, las variables socio-afectivas, la variables psicosociales, los tipos de fuentes e instrumentos de información, y la metodologÃa de la investigación. El objetivo del estudio era cumplir con una de las premisas demandadas por el Ministerio de Educación y Cultura para la apertura del Ciclo Educativo del Bachillerato en la Unidad Educativa 'San Daniel Comboni' de Esmeraldas. Se ha conocido de primera mano las inquietudes educativas referentes al ciclo de Bachillerato y se parte de la realidad educativa de un grupo de 807 estudiantes de décimo curso de básica. Igualmente se conocen las diferencias y semejanzas de dos muestras comparadas, una de 690 alumnos y alumnas pertenecientes a diez centros escolares de la zona de influencia, y otra de 117 del Colegio Nueva Ecuador, perteneciente a la zona centro .
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Esta tesis doctoral tiene como objetivo analizar el papel de Eugeni d’Ors como intelectual durante el perÃodo comprendido entre el inicio de la Gran Guerra y el comienzo de la dictadura de Primo de Rivera en España desde una triple perspectiva europea, española y catalana. Partiendo de este propósito general, tiene su justificación en dos objetivos generales que articulan tanto las argumentaciones como su estructura formal. En primer lugar, aportar una nueva documentación que ilumina algunos posicionamientos poco conocidos y unas relaciones con intelectuales y polÃticos que se alejan de las perspectivas de análisis de muchos de los autores que han estudiado su vida y su obra. En segunda instancia, pretende revisar algunos de los más importantes estudios sobre su figura que se realizaron implÃcita o explÃcitamente desde la perspectiva de los orÃgenes intelectuales del fascismo europeo establecida hace ya varias décadas por el historiador Zeev Sternhell.
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A large sample of cosmic ray events collected by the CMS detector is exploited to measure the specific energy loss of muons in the lead tungstate (PbWO4) of the electromagnetic calorimeter. The measurement spans a momentum range from 5 GeV/c to 1 TeV/c. The results are consistent with the expectations over the entire range. The calorimeter energy scale, set with 120 GeV/c electrons, is validated down to the sub-GeV region using energy deposits, of order 100 MeV, associated with low-momentum muons. The muon critical energy in PbWO4 is measured to be 160+5 -68 GeV, in agreement with expectations. This is the first experimental determination of muon critical energy. © 2010 IOP Publishing Ltd and SISSA.
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The CMS experiment uses self-triggering arrays of drift tubes in the barrel muon trigger to perform the identification of the correct bunch crossing. The identification is unique only if the trigger chain is correctly synchronized. In this paper, the synchronization performed during an extended cosmic ray run is described and the results are reported. The random arrival time of cosmic ray muons allowed several synchronization aspects to be studied and a simple method for the fine synchronization of the Drift Tube Local Trigger at LHC to be developed. © 2010 IOP Publishing Ltd and SISSA.
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The CMS High-Level Trigger (HLT) is responsible for ensuring that data samples with potentially interesting events are recorded with high efficiency and good quality. This paper gives an overview of the HLT and focuses on its commissioning using cosmic rays. The selection of triggers that were deployed is presented and the online grouping of triggered events into streams and primary datasets is discussed. Tools for online and offline data quality monitoring for the HLT are described, and the operational performance of the muon HLT algorithms is reviewed. The average time taken for the HLT selection and its dependence on detector and operating conditions are presented. The HLT performed reliably and helped provide a large dataset. This dataset has proven to be invaluable for understanding the performance of the trigger and the CMS experiment as a whole. © 2010 IOP Publishing Ltd and SISSA.
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The CMS silicon tracker, consisting of 1440 silicon pixel and 15 148 silicon strip detector modules, has been aligned using more than three million cosmic ray charged particles, with additional information from optical surveys. The positions of the modules were determined with respect to cosmic ray trajectories to an average precision of 3-4 microns RMS in the barrel and 3-14 microns RMS in the endcap in the most sensitive coordinate. The results have been validated by several studies, including laser beam cross-checks, track fit self-consistency, track residuals in overlapping module regions, and track parameter resolution, and are compared with predictions obtained from simulation. Correlated systematic effects have been investigated. The track parameter resolutions obtained with this alignment are close to the design performance. © 2010 IOP Publishing Ltd and SISSA.
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Studies of the performance of the CMS drift tube barrel muon system are described, with results based on data collected during the CMS Cosmic Run at Four Tesla. For most of these data, the solenoidal magnet was operated with a central field of 3.8 T. The analysis of data from 246 out of a total of 250 chambers indicates a very good muon reconstruction capability, with a coordinate resolution for a single hit of about 260 μm, and a nearly 100% efficiency for the drift tube cells. The resolution of the track direction measured in the bending plane is about 1.8 mrad, and the efficiency to reconstruct a segment in a single chamber is higher than 99%. The CMS simulation of cosmic rays reproduces well the performance of the barrel muon detector. © 2010 IOP Publishing Ltd and SISSA.
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