RUa Reposity University of Alicante
Not a member yet
94013 research outputs found
Sort by
Key Predictors of Lightweight Aggregate Concrete Compressive Strength by Machine Learning from Density Parameters and Ultrasonic Pulse Velocity Testing
No full textNon-destructive evaluation techniques are increasingly recognised as effective alternatives to destructive testing for estimating the compressive strength of lightweight aggregate concrete (LWAC). Among these, ultrasonic pulse velocity (UPV) is a well-established and widely employed method, characterised by its speed, non-invasiveness, and relative simplicity of implementation. In this study, an experimental dataset comprising 640 core segments from 160 cylindrical specimens, provided for analysis, was investigated. Each segment was described by physical and processing variables or features, including lightweight aggregate (LWA) and concrete densities, casting and vibration times, experimental dry density, and P-wave velocity obtained through UPV testing. A segregation index, derived from UPV measurements and defined as the ratio of local to mean P-wave velocity within each specimen, was also considered, following approaches previously suggested in the literature. A range of machine learning techniques was applied to assess the predictive capacity of local P-wave velocity and segregation index. Most ensemble-based methods and support vector regression (SVR) achieved the highest predictive performance when the segregation index was excluded, suggesting that its inclusion did not improve the predictive ability of the models. By contrast, Gaussian process regression (GPR) showed slight improvements when the segregation index was included. The results confirmed that the P-wave velocity measured by UPV testing is a reliable non-destructive predictor of compressive strength in LWAC. At the same time, the added value of the segregation index remained negligible under conditions of low segregation, as reflected by segregation index values above 0.8. These findings highlight the practical potential of integrating UPV-based measurements with data-driven modelling to enhance the reliability of concrete characterisation and quality control.This research was partially funded by MCIN/AEI/10.13039/501100011033, grant PID2021-123627OB-C55, and by ‘ERDF A way of making Europe’
Reseña de: Vilches-De Frutos, F. y Nieva de la Paz, P. (eds.). (2025). María de la O Lejárraga (1874-1974): Teatro, Feminismo y Vanguardia
No full textComplicit Subjectivity in Love: The Wisdom of Diotima of Mantinea, Monica of Hippo, and Elena Francis
No full textLos consultorios sentimentales han dispuesto los medios para erigirse en altavoz del amor romántico a través del consejo de mujeres expertas. Este es el caso de Elena Francis, una supuesta doctora que, mediante un programa de radio, difundió una posición discursiva de rectitud moral sentimental dirigida a las mujeres durante y después de la dictadura franquista. La maestría amorosa de Francis aparece con anterioridad en personajes de textos filosóficos idealistas. Estos textos describían un tipo de mujer sabia en cuestiones de amor moral o espiritual, ya fuera Diotima de Mantinea, tal y como la retrataba Platón, o Mónica de Hipona, idealizada por San Agustín, quien proyectó el ideal amoroso de la Virgen en su propia madre. El objetivo de este trabajo es trazar la genealogía de un arquetipo de sabiduría o pericia moral entre estos dos primeros personajes, Diotima y Mónica, y Elena Francis. En los objetivos específicos se formulan varios aspectos: en primer lugar, conocer el concepto de amor asociado a este arquetipo y sus elementos. En segundo lugar, desentrañar las características del simbólico de autoridad e intermediación adscrito a estos personajes. Por último, dilucidar su complicidad con la distribución sexual del cuidado. La metodología organiza la investigación de una genealogía, vinculada con el análisis comparativo de género, para interpretar los textos de los diferentes pensadores y las grabaciones de tres cartas del programa. En las conclusiones se recogen las similitudes en sabiduría amorosa entre los personajes; los vínculos con el amor heteronormativo; la complicidad de esta subjetividad con la masculinidad patriarcal; y la distribución sexual de las actividades de cuidados.Relationship advice programs have long provided a megaphone for female experts in the field to offer recommendations about romantic love. One such case is Elena Francis, a purported doctor who used the radio to disseminate a discourse of moral rectitude targeting women during and after the Franco dictatorship. The archetype of expertise or wisdom in matters of love represented by Francis can be seen much earlier in female figures who were featured in texts characterized by philosophical idealism. This article traces the genealogy of an archetype of moral expertise or wisdom between these two figures and Elena Francis. It specifically aims to analyze the concept of love associated with this archetype and its features, to unravel the characteristics of the symbolism of the authority and mediation ascribed to these women, and to determine how these elements are involved in the gendered division of care. The methodology establishes links between genealogical hermeneutics and gender comparative analysis, examining the texts of the different thinkers and the recordings of three letters featured on Francis’s radio program. The conclusion identifies the continuities between the three figures and their insights into love, the links to a heteronormative model of love, the complicit nature of their subjectivity with regard to patriarchal masculinity, and the gendered division of care work.Este artículo es resultado del trabajo de investigación de la contratación posdoctoral «Margarita Salas» de la Universidad Complutense de Madrid (UCM), realizada en el Departamento de Filosofía de la Universidad Autónoma de Madrid (UAB)
¿Utensilio o símbolo? En búsqueda del significado de los instrumentos textiles en contextos funerarios de la Edad del Hierro del sur de Portugal (siglos VII–III/II a. n. e.)
No full textRecent surveys of textile tools in Southern Portuguese Iron Age contexts have shown that they can be found in a variety of functional contexts. However, while the significance of such tools in domestic and religious contexts has already been discussed, the meaning of their presence in funerary settings remains to be fully explored. Ten funerary sites, ranging in date from the mid-7th to the late 3rd/early 2nd century BCE, have nonetheless yielded textile tools, with a preponderance of spindle whorls over loom weights. A critical assessment of the data from those sites shows some revealing trends regarding the functional parameters of the tools and their position in the tombs but, most importantly, the gender and status of the deceased which they accompanied. Despite the low resolution of data, a tendential association with female burials can be posited, and at least some instances of textile tools in relatively high-status tombs can be noted. However, these funerary assemblages offer little to no evidence of craft specialization. These trends can usefully be compared to the available explanatory hypotheses put forward to account for the deposition of textile tools in tombs. Such an exercise suggests a complex, multi-layered meaning for these objects, which encapsulate ideas about gender norms, gendered practices, status, and most likely also religious beliefs.Algunas síntesis recientes sobre los instrumentos textiles en contextos de la Edad del Hierro del sur de Portugal han demostrado que están presentes en diversos contextos funcionales. Sin embargo, y aunque ya se haya discutido su significado en el ámbito doméstico y religioso, aún está por explorar en profundidad su presencia en contextos funerarios. Diez sitios funerarios, fechados entre mediados del siglo VII y finales del siglo III o principios del II a. n. e., han proporcionado instrumentos textiles, con una preponderancia de las fusayolas sobre las pesas de telar. Una evaluación crítica de los datos de esos sitios muestra algunas tendencias reveladoras con respecto a los parámetros funcionales de los instrumentos y a su posición en las tumbas y, sobre todo, al género y estatuto de los difuntos a los que acompañaban. A pesar de la baja resolución de los datos, se puede plantear su frecuente asociación con enterramientos femeninos y, en determinados casos, la presencia de elementos textiles en tumbas de elevado estatus social. Sin embargo, estos conjuntos funerarios revelan pocos o ningún indicio de especialización artesanal. Estas tendencias pueden compararse con las hipótesis avanzadas acerca de la deposición de instrumentos textiles en tumbas. En el presente trabajo sugerimos que el significado de estos objetos fue complejo, con múltiples capas, que sintetizan ideas sobre las normas y prácticas de género, sobre el estatus social y muy probablemente sobre creencias religiosas.This work was financed by Portuguese funds through FCT-Fundação para a Ciência e a Tecnologia in the framework of the project 2023.13050.PEX: TransTexTec - Exploring transitions in textile technologies and economies in the long second millennium BCE (2200-700 BCE): the southern Portuguese territory as a case study (https://doi.org/10.54499/2023.13050.PEX) and the projects UIDB/00698/2020 (https://doi.org/10.54499/UIDB/00698/2020) and UIDP/00698/2020 (https://doi.org/10.54499/UIDP/00698/2020). This article is also based upon work from COST Action EuroWeb – Europe through Textiles (CA19131), supported by COST (European Cooperation in Science and Technology)
Towards Accurate Reference Values for Heart Rate and Speed Zones by Aerobic Fitness and Sex in Long-Distance Runners
No full textBackground: This study aimed to provide reference values for estimating training intensities in long-distance runners based on progressive incremental tests, considering differences related to sex and performance level. Methods: A total of 1411 endurance-trained runners (819 men and 592 women) completed a standardized treadmill protocol with gas exchange analysis to determine ventilatory thresholds and peak oxygen consumption (VO2peak). Heart rate (HR) and running speed at each threshold were expressed relative to their peak values. Results: HR at second ventilatory threshold (VT2) occurred at 93.5 ± 2.5% of HR peak, and HR at first ventilatory threshold at 85.1 ± 4.6%. The relative running speeds at VT2 and VT1 corresponded to 87.6 ± 3.9% and 73.9 ± 5.5% of the speed at VO2peak, respectively. In men, beginners exhibited higher relative HR and VO2 values at the ventilatory thresholds than elite runners. In contrast, women displayed higher and more stable relative values across performance levels. Conclusions: These findings establish precise, evidence-based reference ranges derived from a large cohort of runners and highlight the need to consider sex and performance level when estimating exercise intensities. Individualized physiological assessment remains essential for accurate training prescription and performance optimization
Speech acts and hate speech: a view from the contemporary law
No full textEl presente trabajo pretende mostrar de qué forma la teoría de los actos de habla proporciona categorías de análisis que permiten entender diversas tradiciones relativas a la necesidad de regular o no los discursos de odio. Para ello, se adopta una metodología analítica que articula la revisión teórica de fuentes filosóficas y lingüísticas con el examen de instrumentos normativos y jurisprudencia. La retórica libertaria sostiene que las expresiones discriminatorias e hirientes no deben regularse o deben hacerlo en casos extremos, como cuando implican un peligro de comisión de un ilícito inminente. Esta posición se fundamenta en una serie de presupuestos lingüísticos sobre la comunicación —los cuales han sido criticados por diferentes referentes de la teoría de los actos de habla—. El liberalismo clásico admite ciertas formas de regulación, centrándose en aspectos que conciernen a la faceta perlocutiva de las proferencias, esto es, a las consecuencias que producen las expresiones discriminatorias, tales como socavar la dignidad humana, entendida como un bien fundamental. La visión neorrepublicana, en cambio —basándose en la teoría de la subordinación de Rae Langton, que se nutre también de la teoría de los actos de habla—, proporciona una visión novedosa al considerar que el daño de los discursos de odio debe explicarse en términos de su dimensión ilocutiva, es decir, en las acciones concretas que se realizan a través de ellos, tales como legitimar relaciones estructurales de subordinación al reforzar asimetrías e injusticias históricas. Se ilustran las distintas perspectivas apelando a diferentes instrumentos normativos y decisiones judiciales a nivel internacional y nacional (declaraciones, tratados, leyes y fallos judiciales). El análisis concluye reafirmando el poder performativo del lenguaje, mostrando que los discursos de odio no son solo expresiones ofensivas, sino actos que, en sí mismos, subordinan y legitiman la desigualdad, desmontando así la falaz distinción entre decir y hacer.This paper aims to show how speech act theory provides analytical categories that allow for an understanding of different traditions concerning the need to regulate or not hate speech. To this end, an analytical methodology is adopted that articulates the theoretical review of philosophical and linguistic sources with the examination of normative instruments and jurisprudence. Libertarian rhetoric holds that discriminatory and offensive expressions should not be regulated, or should be regulated in extreme cases, such as when they pose a danger of imminent unlawful action. This position is based on a series of linguistic assumptions about communication, which have been criticized by various proponents of speech act theory. Classical liberalism admits certain forms of regulation, focusing on aspects related to the perlocutionary facet of utterances, that is, the consequences produced by discriminatory expressions, such as undermining human dignity, understood as a fundamental good. The neo-republican perspective, on the other hand, based on Rae Langton’s theory of subordination, which also draws from speech act theory, offers an innovative view by considering that the harm of hate speech must be explained in terms of its illocutionary dimension, that is, the concrete actions performed through such speech, such as legitimizing structural relations of subordination by reinforcing asymmetries and historical injustices. The different perspectives are illustrated by appealing to various normative instruments and judicial decisions at both international and national levels (declarations, treaties, laws, and court rulings). The analysis concludes by reaffirming the performative power of language, showing that hate speeches are not merely offensive expressions, but acts that, in themselves, subordinate and legitimize inequality, thus dismantling the fallacious distinction between speaking and doing
Entre la Pertenencia profesional y el Sufrimiento ético: Impactos de las Culturas Institucionales de Cuidado en la construcción de la Identidad Profesional de la Enfermería
No full textManifesto for the Liberation of Palestine: A Radical Critique of Colonialism and State Fascism
No full text
Shaping Socio-Functional Urban Identity: High Streets, Social Media Data, and the Legacy of Abercrombie’s Functional Bubbles
No full textUnderstanding the complexity of today’s urban environments demands analytical frameworks capable of capturing how spatial form and social activity intertwine to produce meaningful urban units. Building on Abercrombie and Forshaw’s functional analysis of London, our study revisits the concept of neighbourhood as a unit of identity and function and develops a computational approach to identify socio-functional units, its boundaries, and its centres of activity. This novel methodology integrates morphological characteristics along with geotagged social and economic activity data from Foursquare. The method builds upon the MomePy Python library to generate tessellations: spatial units containing both form-based and activity indexes. These indexes are normalized and clustered using a k-means algorithm, resulting in the identification of coherent socio-functional areas, often structured around high streets or central plazas. Tested across 29 cities in Southern Europe, the method proves effective in capturing meaningful spatial patterns that transcend morphological homogeneity, offering refined insights into commercial centrality, functional specialisation, and suburban configurations. Crucially, the analysis reveals the way specific socio-functional identities emerge even within morphologically uniform fabrics, highlighting the value of combining physical and social data sources. While certain limitations remain —particularly related to the resolution and consistency of the open-source morphological data— the approach offers a transferable and scalable tool for identifying urban units rooted in actual use and experience. Beyond its technical contribution, the study revisits disciplinary traditions to offer a contemporary analytical lens, providing planners and urbanists with valuable insights for neighbourhood-based planning.This research has been funded by the Generalitat Valenciana, Regional Ministry of Innovation, Universities, Science and Digital Society, under the project Vulnerability and Resilience: Regeneration Strategies for the City’s Economic Fabric Characterised with Geolocated Social Media Data" (ref. CIGE 2022/52)