Manuel Garcia

Processing data streams arriving at high speed requires the development of models that can provide fast and accurate predictions. Although deep neural networks are the state-of-the-art for many machine learning tasks, their performance in real-time data streaming scenarios is a research area that has not yet been fully addressed. Nevertheless, much effort has been put into the adaption of complex deep learning (DL) models to streaming tasks by reducing the processing time. The design of the asynchronous dual-pipeline DL framework allows making predictions of incoming instances and updating the model simultaneously, using two separate layers. The aim of this work is to assess the performance of different types of DL architectures for data streaming classification using this framework. We evaluate models such as multi-layer perceptrons, recurrent, convolutional and temporal convolutional neural networks over several time series datasets that are simulated as streams at different speeds. In addition, we evaluate how the different architectures react to concept drifts typically found in evolving data streams. The obtained results indicate that convolutional architectures achieve a higher performance in terms of accuracy and efficiency, but are also the most sensitive to concept drifts.

In this paper I explore two possible ways of being quietist in philosophy and relate them to the work of Wittgenstein and McDowell. On the one hand, quietism could be understood as an imperative to remain quiet regarding what we value the most. The final aphorisms of the Tractatus seem to gesture in this direction. On the other hand, it could be seen as a refusal to produce philosophical theories regarding general and abstract issues such as meaning or thought. McDowell has recommended reading the Investigations under this light and has followed the advice in most of his work. I discuss some consequences of this approach to issues such as rule following, mental externalism and ethical particularlism and try to show that there is much exciting philosophical work to be done even after abandoning grand theoretical aspirations.

Assessing physical fitness has emerged as a proxy of the health status of children and adolescents and therefore as relevant from a public health point of view. DAFIS is a project included in Plan Galicia Saudable of the regional government of Galicia. DAFIS consists of an on-line software devoted to record the results of a standard physical fitness protocol carried out as a part of the physical education curriculum. The aims of this study were: to obtain normative values of physical fitness of the Galician school population evaluated in the DAFIS project, and to identify a reduced number of components and tests able to capture a significant amount of the variability in the physical fitness of children and adolescents. From an initial sample of 27784 records, 15287 cases were considered after filtering. Generalized Additive Models for Location, Scale and Shape were used for obtaining percentile curves and tables for each sex. Furthermore, a principal components analysis was performed, selecting the number of components by applying the Kaiser’s rule and selecting a subset of variables considering the correlation between each variable and the components. Percentile curves and normative values are reported for each test and sex. Physical fitness was better in boys than in girls throughout age groups, except for flexibility that was consistently higher in girls. Two main components were detected throughout age groups: the first one representing body composition and partially cardiorespiratory fitness and the second one muscular fitness. For boys and girls, waist to height ratio had the highest correlations with the first component in four out of six age groups. The highest correlation with the second component, was most frequently observed for the handgrip test both in boys and girls. This study provides evidence about the utility of school community actions like DAFIS aimed to track the health-related fitness of children and adolescents. The results suggest that fat mass distribution and muscular performance concentrate a high proportion physical fitness variance.

The question of the limit and the difference between man and animal has become a philosophical issue of special relevance. Just look at its political, social, economic, etc. implications. For the first time man can direct his evolutionary process. From that context, the Heideggerian arguments on the subject are analyzed and discussed, taking their Derridian reading as a conductive thread. It reveals the contradiction between the thematic and operational need for a limit and the impossibility of founding it.

Atrial fibrillation is the most common cardiac arrhythmia in clinical practice. It often starts with asymptomatic and short episodes, which are difficult to detect without the assistance of automatic monitoring tools. The vast majority of methods proposed for this purpose are based on quantifying the irregular ventricular response during the arrhythmia. However, although AF totally alters the atrial activity reflected on the electrocardiogram, replacing stable P-waves by chaotic and time-variant fibrillatory waves, this information has still not been explored for automated screening of AF. Hence, a pioneering AF detector based on quantifying the variability over time of the AA morphological pattern is here proposed. Results from two public reference databases have proven that the proposed method outperforms current state-of-the-art algorithms, reporting accuracy higher than 90%. A less false positive rate in the presence of other arrhythmias different from AF was also noticed. Finally, the combination of this algorithm with the classical analysis of RR series variability also yielded a promising trade-off between AF accuracy and detection delay. Indeed, this combination provided similar accuracy than RR-based methods, but with a significantly shorter delay of 10 beats.

Además de su importancia en la historia de la economía y de las artes, las monedas islámicas medievales constituyeron un destacado medio de expresión del ideario religioso y político dominante en los Estados que las emitieron. La dinastía almohade gobernó, durante la segunda mitad del siglo XII y el XIII, un imperio que se extendía por el Magreb y buena parte de la península Ibérica. Y bajo su gobierno hubo un gran desarrollo de múltiples aspectos culturales, incluido el discurso de legitimación teocrático sobre el que asentaban su poder. Este libro pretende mostrar que en las inscripciones y otros elementos semióticos de las monedas de los almohades se contienen los principales presupuestos de su visión de Dios, de la religión y de la política. Y asimismo que las monedas almohades culminaron un proceso de islamización y arabización de las formas numismáticas. Además de analizar el manejo que hicieron los almohades de ciertos conceptos coránicos, se traza una historia de las traducciones del discurso religioso islámico (como parte de las Escrituras y como elemento epigráfico) por parte del arabismo occidental.

Sobre el telón de fondo de las inquietudes políticas e intelectuales del mundo árabe contemporáneo, en esta obra se analiza el pensamiento islámico medieval desde una posición crítica y racionalista. Esta reconstrucción inteligente y polémica, basada en un profundo dominio de las fuentes árabes medievales y estructurada con el rigor lógico y metodológico de un filósofo actual, aportará un aire nuevo a los estudios andalusíes y contribuirá a su necesaria renovación. Esta obra ofrece un nuevo acercamiento a la tradición filosófica árabe realizado desde su propio interior. Se trata de un enfoque que busca responder tanto a las condiciones científicas actuales como a las inquietudes ideológicas, surgidas del renacimiento nacionalista de fines del XIX y que han promovido la recuperación del legado árabe. Se parte de la premisa de que la filosofía árabe no consiste, como la griega o europea moderna y contemporánea, en una reinterpretación incesantemente renovada de su propia historia, sino en un conjunto de interpretaciones, independientes entre sí, de otra filosofía, la griega; interpretaciones que subordinaron un mismo material cognitivo a fines ideológicos diferentes e incluso divergentes. Mientras que la filosofía islámica oriental reposaba sobre la teología, la filosofía andalusí, como resalta su autor, «se erigió sobre la base de la ciencia, la lógica y las matemáticas, lo que hizo de ella una filosofía científica y 'laica'». En palabras de Fátima Mernissi, la obra de Mohamed Ábed Yabri «reconcilia a millones de jóvenes árabes con la modernidad y las aspiraciones democráticas». En ella, se defiende una vuelta al averroismo, que es interpretado como la parte de la tradición filosófica árabe «capaz de compartir con nosotros el presente».

The author maintains in this article that it is possible an approach between the positivistic legal theory, the one that follows the model of the analytical theory developed by Hart, and those others that apply a socio-legal method. Against what some defenders of both perspectives advocate, who view each others with some disdain, the author asserts the need to integrate legal theory with social sciences in the field of juridical ideas. This supposes opening spaces to develop a socio-legal theory of law that lives equally from categories of conceptual analysis and of sociological research. The author rests specially, in order to defend this position, on authors like Roger Coterrell, Denis Galligan, Nicola Lacey and, above all, Brian Tamanaha and William Twinning, whose arguments are here object of special consideration

Propuesta de un nuevo y complementario enfoque —el traductológico— para el estudio de los romanceamientos granadinos considerados en cuanto que testimonios únicos para la historia de la traducción del árabe al español y la historia del arabismo en España. Dicho enfoque se lleva aquí a la práctica ilustrado con dos romanceamientos inéditos llevados a cabo en 1517 por Bemardino Xarafí, escribano público y romanceador de la ciudad de Granada y su Reino. La edición de los mismos se acompaña de un amplio estudio traductológico, una panorámica general sobre los Xarafí y otros romanceadores granadinos del primer tercio del XVI y un análisis descriptivo comparado con otros romanceamientos del siglo XVI y con los procedimientos de traducción actualmente aceptados en la traducción jurada del árabe al español.