Alberto Sols Biomedical Research Institute
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Dialect Competition: Arcadian as a test case
No full textMonolingualism, understood as the ability to speak only one language, is rarer than multilingualism, even in antiquity. In ancient Greece, different dialects were spoken, written, and heard. The influence of some of them on others can be observed from an early period, particularly once the common language, the Koiné, was spreading widely. As expected, the Koiné is a prestigious language that competes with the local languages, which are clearly in decline. There were attempts to preserve the identity and autonomy of some Greek regions by using other language varieties, inspired by the supra-regional language but infused with local accents. Consequently, various official languages competed with the Koiné.
Arcadian has been chosen as a test case on various grounds. Firstly, the dialect is well documented from the sixth century to the third century BCE. Secondly, some documents are composed in a mixed language combining dialect and Koiné and/or the local Koina. Thirdly, there are inscriptions written in the Attic-Ionic Koiné, and others that exhibit the influence of the Aetolian Koin
Participle constructions in Post-Classical Greek: the example of the “confessions” of Asia Minor
No full textEvaluación de un dispositivo de cpap de alto flujo como estrategia de 'Weaning' de la ventilación mecánica prolongada en pediatría
No full textTesis Doctoral inédita leída en la Universidad Autónoma de Madrid, Facultad de Medicina, Departamento de Pediatría. Fecha de Lectura: 07-03-202
Segregadores y segregados: la incidencia de los centros privados en la segregación escolar
No full textTesis Doctoral inédita leída en la Universidad Autónoma de Madrid, Facultad de Formación del Profesorado y Educación, Departamento de Pedagogía. Fecha de Lectura: 14-03-202
Sedimentary record of the 1755 Lisbon tsunami in an urban area. (Municipality of conil de La Frontera, south of the Iberian Peninsula)
No full textOn November 1, 1755, Europe witnessed one of the most devastating natural disasters: a violent earthquake triggered a tsunami that affected large areas of the Atlantic coast. This study analyses the deposits associated with the 1755 tsunami in Conil de la Frontera, combining sedimentary, historical, and taphonomic evidence. The results show that the grain size and the presence of bioclasts confirm a marine and highly energetic origin of the sediments. Historical documents indicate that the first wave reached 8–10 m in height. Furthermore, the analysis of fossil remains found in the area, whose ages were established by stratigraphic correlation, suggests that they correspond to the Lisbon seismic eventThis work is a contribution from the GeoArqHis Research Group at the Autonomous University of Madrid. Javier Alcántara Carrió thanks the grant “Aid for the Requalification of the Spanish University System” (reference CA2/RSUE/2021−00418) of the Spanish Ministry of Universitie
Alpha entropy search for new information-based Bayesian optimization
No full textBayesian optimization (BO) methods based on information theory have obtained state-of-the-art results in several tasks. These techniques rely on the Kullback–Leibler (KL) divergence to compute the acquisition function. We introduce a novel information-based class of acquisition functions for BO called Alpha Entropy Search (AES). AES is based on the alpha-divergence, which generalizes the KL-divergence. Iteratively, AES selects the next evaluation point as the one whose associated target value has the highest level of dependency with respect to the location and associated value of the global maximum of the optimization problem. Dependency is measured in terms of the alpha-divergence, as an alternative to the KL-divergence. Intuitively, this favors evaluating the objective function at the most informative points about the global maximum. The alpha-divergence has a free parameter α, which determines the behavior of the divergence, balancing local and global differences. Therefore, different values of α result in different acquisition functions. AES acquisition lacks a closed-form expression. However, we propose an efficient and accurate approximation using a truncated Gaussian distribution. In practice, the value of α can be chosen by the practitioner, but here we suggest using a combination of acquisition functions obtained by simultaneously considering a range of α values. We provide an implementation of AES in BOTorch and we evaluate its performance in synthetic, benchmark, and real-world experiments involving the tuning of the hyper-parameters of a deep neural network. These experiments show that AES performance is competitive with other information-based acquisition functions such as JES, MES, or PESThe authors acknowledge financial support from project PID2022139856NB-I00 funded by MCIN/AEI/10.13039/501100011033/ FEDER, UE, from project IDEA-CM (TEC-2024/COM-89) funded by the Autonomous Community of Madrid, Spain, and from the ELLIS Unit Madrid, Spain. This publication is also part of the R&D&i project Semi Automatic Meta Analysis helps with Reference PP2024_32, funded by the Universidad Pontificia Comillas, Spai
Iron minerals as catalysts in photo-assisted NO3 reduction in aqueous phase
No full textPresence of nitrogenous compounds in drinking water cannot exceed 50 mg/L for NO3−, 0.1 for NO2−, and 0.5 mg/L for NH4+. In order to address this issue, this study tackles the use of iron-rich minerals (hematite, ilmenite, goethite and magnetite) as catalysts in photo-assisted nitrate reduction employing oxalate as reducing agent. Firstly, the catalytic activity of the different minerals was tested at different pH levels, finding an outstanding performance of magnetite at pH0 5, with a 50 % NO3− reduction in 60 min. After selecting magnetite as catalyst, a parametric study was performed evaluating initial pollutant concentration, catalyst load and reducing agent dosage. Best operating conditions were found to be [NO3−]: 75 mg/L, [Fe3O4]: 100 mg/L, [C2O42−]: 370 mg/L and pH0 5, for which complete NO3− reduction and selectivity towards N2(g) was reached after 150 min. Furthermore, magnetite maintained its activity in 5 consecutive cycles without any treatment between runs, showing its great stability. Reaction mechanism follows two pathways: i) direct electron transfer and ii) CO2• − mediated reduction. This mechanism was validated using methyl viologen as CO2• −scavenger showing that both pathways contribute equally in NO3− reduction. Finally, process feasibility was tested employing real groundwater samples naturally containing NO3−, showing promising results towards the implementation of photo-assisted catalytic reduction for drinking water treatment. Thus, a highly efficient technology has been developed, overcoming the limitations of photo-assisted nitrate removal processes by utilizing a cost-effective, stable, and highly active catalyst. This approach achieves the legislation for drinking water while generating negligible [NH4+]Authors thank the Spanish AEI for funding received through Grant PID2022–139063OB-I00 funded by MCIN/AEI/10.13039/ 501100011033 and, as appropriate, by “ERDF A way of making Europe”, by the “European Union” or by the “European Union NextGenerationEU/PRTR”. A. L. Garcia-Costa thanks Comunidad de Madrid for the Cesar Nombela grant 2023-T1/ECO-2906
Desde la investigación a la intervención: un programa de afrontamiento de la ansiedad por desempeño musical
Get PDFTesis Doctoral inédita leída en la Universidad Autónoma de Madrid, Facultad de Formación del Profesorado y Educación, Departamento Interfacultativo de Psicología Evolutiva y de la Educación. Fecha de Lectura: 11-04-2025La ansiedad por desempeño musical (ADM) constituye un trastorno incapacitante que afecta significativamente a los profesionales de la música. A pesar de su elevada incidencia, hasta la fecha no se han desarrollado ampliamente herramientas específicas para su afrontamiento o mitigación de efectos, o su aplicación aún es limitada. El ámbito formativo se posiciona como un espacio clave para implementar medidas educativas que proporcionen a los futuros músicos las competencias necesarias para afrontar los síntomas de la ADM, asegurando así el ejercicio profesional sin restricciones.
En este contexto, se ha diseñado un programa innovador que ha demostrado fiabilidad y validez en el afrontamiento y reducción de los efectos adversos de la ADM. Su desarrollo ha obtenido resultados positivos tanto a corto como a largo plazo.
A través de una revisión bibliográfica de las técnicas implementadas en los últimos años, la identificación de factores predisponentes y estrategias de afrontamiento la ADM, la identificación de los puntos clave del discurso social de los músicos mediante grupos de discusión de músicos profesionales en formación y el diseño e implementación de un programa de afrontamiento propio, esta investigación contribuye con el desarrollo de una línea científica con potencial impacto social, contribuyendo a la formación de músicos profesionales mediante un enfoque educativo centrado en el desarrollo de habilidades para la autoprotección del bienestar emocional.
A pesar de las limitaciones metodológicas que supone la investigación con este tipo de población tan específica, los resultados muestran mejoras prometedoras que plantean un nuevo paradigma en la educación musical, orientado a garantizar la salud emocional y profesional de los músico
