138 research outputs found

    La clase invertida: el papel de las actividades previas en el rendimiento final del alumno

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    [ES] El modelo de la clase invertida o flipped classroom consiste en dar la vuelta a la organización del modelo tradicional docente, sacando la transmisión de conocimientos fuera del aula y dejar tiempo de aula para propiciar un aprendizaje más activo y profundo en el alumnado. En la presente innovación se estudió el impacto que tiene visualizar vídeos con preguntas incrustadas sobre el rendimiento final en la asignatura. Los resultados mostraron por un lado que existe una relación marginalmente significativa entre la visualización de vídeos y el rendimiento en la prueba final de la asignatura. Por otro, se halló una correlación positiva aunque moderada entre las puntuaciones obtenidas en las preguntas incrustadas en los vídeos y la puntuación en el examen final. Estos resultados concuerdan con la idea de que es posible lograr un procesamiento más profundo de la información y, por tanto, un mejor recuerdo de la misma, cuando se insertan preguntas a lo largo de los vídeos[EN] The flipped classroom model consists on a re-arrangement of the traditional instructional model, in the sense that the lectures are placed out of the classroom whereas the classroom time is devoted to promote a more active and deeper learning in the students. This innovation was aimed to study the impact of viewing videos with questions embeded along it on the final achievent of the students. Results showed that there is a marginal relationship between watching videos and the score on the final test of the course. In addition, a possitive correlation between the scores obtained on the questions of the videos and the score on the final test was obtained. This results are in accordance with the idea that embeding questions along the videos leads to a more profound proccessing of the information, and therefore, a better learning.López-Crespo, G.; Fidalgo, C.; Martín-Albo, J.; Valdivia-Salas, S.; Lerma-Cabrera, JM.; Carvajal-Ruiz, M.; Carralero-Esteban, D. (2021). La clase invertida: el papel de las actividades previas en el rendimiento final del alumno. En IN-RED 2020: VI Congreso de Innovación Educativa y Docencia en Red. Editorial Universitat Politècnica de València. 104-109. https://doi.org/10.4995/INRED2020.2020.11994OCS10410

    Autologous stem cell transplantation may be curative for patients with follicular lymphoma with early therapy failure without the need for immunotherapy

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    Objective/Background: Patients with follicular lymphoma (FL) with early therapy failure (ETF) within 2 years of frontline therapy have poor overall survival (OS). We recently reported the results of autologous stem cell transplantation (ASCT) in patients from the Grupo Español de Linfomas y Trasplantes de Médula Ósea (GELTAMO) registry treated with rituximab prior to ASCT and with ETF after first-line immunochemotherapy, leading to 81% 5-year OS since ASCT. We explored whether ASCT is also an effective option in the pre-rituximab era—that is, in patients treated in induction and rescued only with chemotherapy. Methods: ETF was defined as relapse/progression within 2 years of starting first-line therapy. We identified two groups: the ETF cohort (n = 87) and the non-ETF cohort (n = 47 patients receiving ASCT but not experiencing ETF following first-line therapy). Results: There was a significant difference in 5-year progression-free survival between the ETF and non-ETF cohorts (43% vs. 57%, respectively; p = .048). Nevertheless, in patients with ETF with an interval from first relapse after primary treatment to ASCT of <1 year, no differences were observed in 5-year progression-free survival (48% vs. 66%, respectively; p = .44) or in 5-year OS (69% vs. 77%, p = .4). Patients in the ETF cohort transplanted in complete remission showed a plateau in the OS curves, at 56%, beyond 13.7 years of follow-up. Conclusion: ASCT may be a curative option for ETF in patients who respond to rescue chemotherapy, without the need for immunotherapy or other therapies, and should be considered as an early consolidation, especially in patients with difficult access to rituximab

    Radon and material radiopurity assessment for the NEXT double beta decay experiment

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    The Neutrino Experiment with a Xenon TPC (NEXT), intended to investigate the neutrinoless double beta decay using a high-pressure xenon gas TPC filled with Xe enriched in 136Xe at the Canfranc Underground Laboratory in Spain, requires ultra-low background conditions demanding an exhaustive control of material radiopurity and environmental radon levels. An extensive material screening process is underway for several years based mainly on gamma-ray spectroscopy using ultra-low background germanium detectors in Canfranc but also on mass spectrometry techniques like GDMS and ICPMS. Components from shielding, pressure vessel, electroluminescence and high voltage elements and energy and tracking readout planes have been analyzed, helping in the final design of the experiment and in the construction of the background model. The latest measurements carried out will be presented and the implication on NEXT of their results will be discussed. The commissioning of the NEW detector, as a first step towards NEXT, has started in Canfranc; in-situ measurements of airborne radon levels were taken there to optimize the system for radon mitigation and will be shown too.Comment: Proceedings of the Low Radioactivity Techniques 2015 workshop (LRT2015), Seattle, March 201

    Measurement of radon-induced backgrounds in the NEXT double beta decay experiment

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    The measurement of the internal 222^{222}Rn activity in the NEXT-White detector during the so-called Run-II period with 136^{136}Xe-depleted xenon is discussed in detail, together with its implications for double beta decay searches in NEXT. The activity is measured through the alpha production rate induced in the fiducial volume by 222^{222}Rn and its alpha-emitting progeny. The specific activity is measured to be (38.1±2.2 (stat.)±5.9 (syst.))(38.1\pm 2.2~\mathrm{(stat.)}\pm 5.9~\mathrm{(syst.)})~mBq/m3^3. Radon-induced electrons have also been characterized from the decay of the 214^{214}Bi daughter ions plating out on the cathode of the time projection chamber. From our studies, we conclude that radon-induced backgrounds are sufficiently low to enable a successful NEXT-100 physics program, as the projected rate contribution should not exceed 0.1~counts/yr in the neutrinoless double beta decay sample.Comment: 28 pages, 10 figures, 6 tables. Version accepted for publication in JHE
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