1,622 research outputs found

    Una Visió general del sistema de posicionament global (GPS)

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    A review of spatiotemporal models for count data in R packages. A case study of COVID-19 data

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    Spatiotemporal models for count data are required in a wide range of scientific fields, and they have become particularly crucial today because of their ability to analyze COVID-19- related data. The main objective of this paper is to present a review describing the most important approaches, and we monitor their performance under the same dataset. For this review, we focus on the three R-packages that can be used for this purpose, and the different models assessed are representative of the two most widespread methodologies used to analyze spatiotemporal count data: the classical approach and the Bayesian point of view. A COVID-19-related case study is analyzed as an illustration of these different methodologies. Because of the current urgent need for monitoring and predicting data in the COVID-19 pandemic, this case study is, in itself, of particular importance and can be considered the secondary objective of this work. Satisfactory and promising results have been obtained in this second goal. With respect to the main objective, it has been seen that, although the three models provide similar results in our case study, their different properties and flexibility allow us to choose the model depending on the application at hand

    Isotopic study of the influence of oxygen interaction and surface species over different catalysts on the soot removal mechanism

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    In order to improve the catalytic formulations for soot removal in after-treatment emission control technologies for gasoline and diesel engine vehicle, an isotopic study was approached using transitory labeled oxygen response method over model catalysts that allows the unraveling of soot oxidation mechanism. Ce-based materials promote oxygen exchange associated with the high population of lattice oxygen species (O2-) denoted as OI type. The incorporation of praseodymium produces a Pr3+ enrichment that decrease the energy for oxygen release and increase oxygen mobility through surface and subsurface oxygen centers (OII type) depending on the synthesis procedure. For PtBaK catalyst, OIII species are responsible for oxygen exchange. Gas-solid reaction between soot and gas phase molecular oxygen is responsible for direct uncatalyzed soot oxidation. For ceria containing catalysts, low-temperature soot removal takes place through the intervention of lattice atomic species and superoxide species. For DPNR model catalyst, PtBaK/Al2O3, the soot elimination occurs with the intervention OIII type centers. In the presence NO, the assisted and cooperative mechanism due to NO2 and the intervention of the adsorbed nitrate species on the trimetallic catalyst enhances soot removal capacity.MCR acknowledges the postdoctoral fellowship obtained from the University of Malaga. MCR, CH, MAL and LJA want to thank the financial support of CTQ 2017-87909R project. MCR also want to thank the University of Alicante for the financial support for the internship (INV19-07). JCMM and AGG gratefully acknowledge the financial support of Generalitat Valenciana (PROMETEO/2018/076 project) and the Spanish Ministry of Science, Innovation and Universities (PID2019-105542RB-I00 project) and the UE-FEDER funding. JCMM also acknowledges Spanish Ministry of Science, Innovation and Universities for the financial support through a FPU grant (FPU17/00603)

    La formación del docente ante las necesidades educativas en el aula de música

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    Esta investigación parte del estudio de la situación del alumnado con necesidades educativas especiales, en el aula de música, a partir de investigaciones y/o de publicaciones más significativas en este campo. El equipo de trabajo, que participa en la investigación, está formado en los campos directamente relacionados con el desarrollo psicoemocional y musical. El objetivo fundamental que se pretende es favorecer la inclusión del alumnado con necesidades educativas especiales. Con esta finalidad, se elaboran adaptaciones de materiales didácticos para el alumnado en el aula de música, que contribuyan a fomentar un desarrollo lo más normalizado posible, a través de una metodología basada en intervenciones individuales y colectivas que potencien métodos de aprendizaje compresivos, colaborativos y significativos, además de mejorar la afectividad, la conducta, la personalidad y la comunicación de este alumnado. Para tal fin, resulta fundamental incidir en la formación del profesorado, en el ámbito universitario, ante la diversidad de expectativas y necesidades de los educandos, ya que de ellos dependerá la existencia de una educación en la que el alumnado obtenga una respuesta adecuada a sus necesidades y unas experiencias musicales que potencien su actividad psíquica, física y emocional, con el fin de despertar la curiosidad y el interés por aprender

    EcodosSat

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    2014/201

    Early Diagnosis and Treatment of Purine Nucleoside Phosphorylase (PNP) Deficiency through TREC-Based Newborn Screening

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    Newborn screening; Severe combined immunodeficiencyCribatge nounat; Immunodeficiència combinada severaCribado neonato; Inmunodeficiencia combinada gravePurine nucleoside phosphorylase (PNP) deficiency is a rare inherited disorder, resulting in severe combined immunodeficiency. To date, PNP deficiency has been detected in newborn screening only through the use of liquid chromatography tandem mass spectrometry. We report the first case in which PNP deficiency was detected by TREC analysis.This research was funded by Jeffrey Modell Foundation
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