Voces del relato histórico : La enseñanza de la Historia desde una mirada social

Este libro se gestó a la sombra de un gran interrogante que atraviesa nuestro trabajo en el aula, puntualmente ¿cómo proporcionar a los/as estudiantes textos que sin dejar de ser rigurosos y académicos faciliten la comprensión de la Historia, Historia del Arte y Geografía? Fue en esa dirección que asumimos este desafío, ahora plasmado en su escritura, con el objetivo de generar una producción académica, pero mediada, para optimizar el acceso y la lectura de los/as estudiantes en la dinámica del proceso de enseñanza y aprendizaje. Los trabajos que integran esta producción se inscriben en una línea que persigue aunar criterios metodológicos y didácticos, propugnando el fortalecimiento de los equipos docentes en función de la enseñanza de las Ciencias Sociales en el ámbito del Bachillerato de Bellas Artes. La escritura de los capítulos adhiere a una perspectiva de abordaje del pasado descentrada de los lineamientos de la “historia única”, narrativa en torno a la cual se han solidificado determinadas memorias silenciándose otras, alternativas o discrepantes. La novelista nigeriana Chimamanda Ngozi Adichie, en su brillante conferencia titulada The dangers of a single story (2010) pone la mirada en el poder y en el rol que este ha desempeñado en la elaboración de las versiones sobre el pasado. En suma, del poder depende quiénes son los que cuentan, cómo se cuenta, cuánto se cuenta, “es la habilidad no sólo de contar la historia del otro, sino de hacer que esa sea la historia definitiva”. Por lo general, se trata de “una historia lineal y estatista, que nos impide ver que en cada momento del pasado ha existido una diversidad de futuros posibles” (Fontana, 2003, 17), que fueron proyectos alternativos que no lograron sus fines y quedaron subsumidos bajo la versión que finalmente se impuso. En esa trama, los sujetos sociales en los que se pone el foco de atención son siempre las personas “relevantes” que pertenecen a los grupos dominantes, por lo tanto, el relato histórico toma distancia de los hombres y mujeres comunes, personas de carne y hueso que también contribuyen a moldear el microcosmos del cual formaron parte.Bachillerato de Bellas Artes "Prof. Francisco A. De Santo

Testing and integrating the WLCG/EGEE middleware in the LHC computing

The main goal of the Experiment Integration and Support (EIS) team in WLCG is to help the LHC experiments with using proficiently the gLite middleware as part of their computing framework. This contribution gives an overview of the activities of the EIS team, and focuses on a few of them particularly important for the experiments. One activity is the evaluation of the gLite workload management system (WMS) to assess its adequacy for the needs of the LHC computing in terms of functionality, reliability and scalability. We describe in detail how the experiment requirements can be mapped to validation criteria, and the WMS performances are accurately measured under realistic load conditions over prolonged periods of time. Another activity is the integration of the Service Availability Monitoring system (SAM) with the experiment monitoring framework. The SAM system is widely used in the EGEE operations to identify malfunctions in Grid services, but it can be adapted to perform the same function on experiment-specific services. We describe how this has been done for some LHC experiments, which are now using SAM as part of their operations

The Ring Imaging Cherenkov detector (RICH) of the AMS experiment

The Alpha Magnetic Spectrometer (AMS) experiment to be installed on the International Space Station (ISS) will be equipped with a proximity focusing Ring Imaging Cherenkov (RICH) detector for measuring the electric charge and velocity of the charged cosmic particles. A RICH prototype consisting of 96 photomultiplier units, including a piece of the conical reflector, was built and its performance evaluated with ion beam data. Preliminary results of the in-beam tests performed with ion fragments resulting from collisions of a 158 GeV/c/nuc primary beam of Indium ions (CERN SPS) on a Pb target are reported. The collected data included tests to the final front-end electronics and to different aerogel radiators. Cherenkov rings for a large range of charged nuclei and with reflected photons were observed. The data analysis confirms the design goals. Charge separation up to Fe and velocity resolution of the order of 0.1% for singly charged particles are obtained.Comment: 29th International Conference on Cosmic Rays (Pune, India

The AMS-RICH velocity and charge reconstruction

The AMS detector, to be installed on the International Space Station, includes a Ring Imaging Cerenkov detector with two different radiators, silica aerogel (n=1.05) and sodium fluoride (n=1.334). This detector is designed to provide very precise measurements of velocity and electric charge in a wide range of cosmic nuclei energies and atomic numbers. The detector geometry, in particular the presence of a reflector for acceptance purposes, leads to complex Cerenkov patterns detected in a pixelized photomultiplier matrix. The results of different reconstruction methods applied to test beam data as well as to simulated samples are presented. To ensure nominal performances throughout the flight, several detector parameters have to be carefully monitored. The algorithms developed to fulfill these requirements are presented. The velocity and charge measurements provided by the RICH detector endow the AMS spectrometer with precise particle identification capabilities in a wide energy range. The expected performances on light isotope separation are discussed.Comment: Contribution to the ICRC07, Merida, Mexico (2007); Presenter: F. Bara

The RICH detector of the AMS-02 experiment: status and physics prospects

The Alpha Magnetic Spectrometer (AMS), whose final version AMS-02 is to be installed on the International Space Station (ISS) for at least 3 years, is a detector designed to measure charged cosmic ray spectra with energies up to the TeV region and with high energy photon detection capability up to a few hundred GeV. It is equipped with several subsystems, one of which is a proximity focusing RICH detector with a dual radiator (aerogel+NaF) that provides reliable measurements for particle velocity and charge. The assembly and testing of the AMS RICH is currently being finished and the full AMS detector is expected to be ready by the end of 2008. The RICH detector of AMS-02 is presented. Physics prospects are briefly discussed.Comment: 5 pages. Contribution to the 10th ICATPP Conference on Astroparticle, Particle, Space Physics, Detectors and Medical Physics Applications (Como 2007). Presenter: Rui Pereir