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Retrieval-Augmented Generation for technical maintenance support
No full textCátedra ENIA IA3. Documento de trabajoThis paper presents a comprehensive approach to intelligent maintenance systems, focusing on the implementation of a Retrieval-Augmented Generation (RAG) architecture to support fault detection and maintenance procedures for Unmanned Aerial Vehicles (UAVs). While traditional predictive maintenance relies heavily on sensor data and classification models, the increasing complexity of unstructured technical documentation requires advanced Natural Language Processing (NLP) techniques. We detail the development of a RAG system capable of ingesting maintenance manuals, indexing them using semantic embeddings, and retrieving relevant context to answer specific maintenance queries using a Large Language Model (LLM). The system leverages open-source technologies such as LangChain, Chroma, and Ollama (Qwen3), ensuring data privacy and local execution capabilities. We also provide an extensive review of the state of the art in predictive maintenance, covering supervised, unsupervised, deep learning, and statistical approaches, establishing the broader context for intelligent fault detection systems
Revitalising the Ibero-American investment space
Full text linkRevitalizar el espacio inversor iberoamericano, en el contexto de la economía y las finanzas internacionales, significa construir un ámbito económico, financiero e institucional integrado entre los países de Iberoamérica (es decir, América Latina más España y Portugal) que favorezca las inversiones recíprocas, la movilidad de capitales, la cooperación empresarial y la confianza regulatoria. Iberoamérica, que vive la intensidad de la batalla que empuja a la globalización hacia una nueva fase, caracterizada por una mayor fragmentación de los mercados, frente a la anterior que se distinguía por una mayor integración, para nada es ajena a la lucha por la hegemonía global que se disputan Estados Unidos y China, que en ocasiones es abierta y directa, y, en otras encubiertas y soterrada. Una situación que alumbra desafíos, que a su vez conlleva, nuevas oportunidades para revitalizar el espacio inversor iberoamericano, donde, España como puerta de entrada y puente para las inversiones latinoamericanas y país vertebrador con la Unión Europea, supone uno de los pilares centrales en el proceso de consolidación de la comunidad iberoamericana.Revitalizing the Ibero-American investment space, in the context of the international economy and finance, means building an integrated economic, financial and institutional environment among the countries of Ibero-America (i.e. Latin America plus Spain and Portugal) that favors reciprocal investment, capital mobility, business cooperation and regulatory confidence. Ibero-America, which is experiencing the intensity of the battle that is pushing globalization towards a new phase, characterized by greater market fragmentation, as opposed to the previous phase, which was distinguished by greater integration, is by no means alien to the struggle for global hegemony between the United States and China, which is sometimes open and direct, and at other times covert and underground. This situation gives rise to challenges, which in turn bring new opportunities to revitalize the Ibero-American investment space, where Spain, as a gateway and bridge for Latin American investment and a backbone country with the European Union, is one of the central pillars in the process of consolidating the Ibero-American community
Effect of acute and moderate caffeine doses on sport climbing performance: a randomized controlled trial
Full text link14 p.Background/Objectives: Caffeine is a well-established ergogenic aid in many strength- and endurance-based sports, but its efficacy in sport climbing remains underexplored despite the sport?s unique physical demands on grip strength, power, and muscular endurance. Therefore, this study examined the acute impact of a low caffeine dose (3 mg/kg) on climbing-specific performance, including pull-up and grip tests, in intermediate-advanced climbers. Methods: In a triple-blind, randomized, crossover design, thirteen male climbers (age: 28.2 ± 8.6 years) completed two experimental trials (caffeine vs. placebo). Performance was assessed via a pull-up one-repetition maximum (1RM) and power test at various loads, a pull-up muscular endurance test, and grip tests including maximum deadhang time, maximum dead-hang strength, and rate of force development (RFD). Results: Caffeine did not significantly enhance performance in any measured variable. While a non-significant increase in peak power was observed at 80% 1RM (+8.0%, 95% CI: ?0.232 to 0.304, p > 0.05, g = 0.348), effects at other loads and on pull-up endurance were trivial based on effect size (e.g., repetitions: +3.3%, 95% CI: ?3.30 to 4.37, p = 0.292, g = 0.061). For grip metrics, caffeine was associated with a modest reduction in endurance time (+7.4%, p =0.162, g = 0.171) and a slight increase in maximum strength (+2.4%, p = 0.060, g = 0.120). RFDwasunaffected (p > 0.169, g < 0.13). Despite the lack of objective improvement, participants reported significantly greater subjective feelings of strength, energy, and alertness with caffeine (p < 0.05). Conclusions: A 3 mg/kg dose of caffeine, while altering psychophysiological state, did not elicit statistically or practically meaningful ergogenic effects on pull-up or grip performance in climbers. Higher doses or sport-specific performance tests should be investigated in future research.iSANIDADUniversidad de Alcal
Exploring legitimation code theory and TikTok: knowledge codes and semantic profiles in finfluencer discourse
Full text linkThis exploratory study employs Legitimation Code Theory (LCT), a theoretical framework for analysing knowledge practices across disciplinary and social contexts, to elucidate the construction and legitimisation of financial knowledge on TikTok, a platform witnessing a surge in informal financial literacy education. A meticulously curated multimodal corpus of financial influencer (‘finfluencer’) videos (n=100; 50 English, 50 Spanish) underwent rigorous analysis utilising key LCT constructs. Specifically, we examined semantic gravity (the degree to which meaning relates to specific contextual referents) and semantic density (the concentration of meaning within symbols or practices) to generate nuanced semantic profiles that illuminate knowledge-building practices. Empirical semantic profile mapping revealed a striking dichotomy: English-language videos predominantly exhibited prosaic codes, characterised by high interconnectivity between financial concepts and everyday applications, facilitating accessibility whilst maintaining conceptual coherence. Conversely, Spanish-language videos manifested primarily rarefied codes, distinguished by abstract financial terminology with limited contextual grounding and reduced practical interconnections. This linguistic divergence intimates that cultural and linguistic milieus profoundly shape the contours of financial knowledge dissemination across digital platforms. Further comparative analysis revealed a significant correlation between finfluencer popularity metrics and discourse characteristics; those with larger followings tended towards weaker semantic gravity and greater abstraction, corroborating theoretical postulations that elevated platform status bolsters claims to knowledge legitimacy. The findings underscore LCT’s efficacy in illuminating the intricate interplay among cultural contexts, platform-specific power hierarchies, and symbolic capital in the online propagation of financial concepts. This research offers valuable insights into the multifaceted dynamics of knowledge legitimisation in digital spaces, potentially informing future strategies for developing cross-cultural financial literacy programmes that acknowledge diverse knowledge-building practices
Towards a formation model of the Neanderthal symbolic accumulation of herbivore crania : spatial patterns shaped by rockfall dynamics in Level 3 of Des-Cubierta Cave (Lozoya valley, Madrid, Spain)
Full text linkUnderstanding formation processes is crucial for interpreting sites with complex sedimentary histories and exceptional archaeological records, such as Level 3 of Des-Cubierta Cave. This Middle Paleolithic unit contains an assemblage of anthropically modified ungulate horned crania, Mousterian lithics, and evidence of fire use, all preserved in a clast-supported gravel deposit shaped by successive rockfalls. This study integrates geostatistical analyses with traditional spatial and taphonomic methods to examine the cone-shaped sedimentary structure that dominates the level and its influence on the spatial distribution and preservation of archaeological materials. The results reveal distinct spatial patterns for geological and archaeological materials, indicating separate formation dynamics. Size-based spatial analyses of boulders characterize the morphology of the conical structure, highlighting size sorting and intensity variations that may indicate sedimentary hiatuses. Bone refitting analysis suggests limited post-depositional movement, with material distribution shaped by the conical sedimentary structure and karst gallery morphology. Variability in crania preservation correlates with proximity to the cone?s apex and elevation, with better-preserved specimens in central areas and more fragmented remains in zones affected by erosive and edaphic processes. These findings underscore the value of integrating geostatistical and traditional archaeological approaches to advance interpretations of spatial and temporal patterns in karst environments and provide a methodological approach for examining sites with similar sedimentary histories. Moreover, the results support the interpretation of a recurrent, culturally motivated Neanderthal behaviour centred on the deliberate accumulation of large ungulate crania, pointing to a symbolic dimension in these practices.Comunidad de Madri
Detection of balance in the elderly under the influence of stress (DEPIE): a cross-sectional study protocol
Full text linkMembership of the Health Technology Integration Research Group (GITES) in alphabetical order: Bernardo Alarcos, Belén Díaz-Pulido, Olalla Fernández, Sara Fernández-Guinea, Antonio García Herraiz, María del Mar Lendínez-Chica, Javier Martínez Muela, Susana Nunez-Nagy, Yolanda Pérez-Martín, Isabel Rodríguez-Costa, Gloria M. Rubio González, Sara Trapero-Asenjo, Juan R. Velasco.Age-related changes increase frailty and vulnerability to stress in older adults, and stress has been linked to poorer balance and fall risk. However, the mechanisms by which emotional stress may contribute to falls remain unclear. This study explores whether: 1) emotional stressors lead to neuromuscular changes that affect postural control in older adults; and 2) technology can assist in fall prevention by detecting increased risk. A cross-sectional, laboratory-based observational study is being conducted in a single session comparing 30 young adults (18-39 years) and 30 older adults (≥65 years), in which participants are exposed to emotional stressors (high-arousal images) and their immediate neuromuscular and balance responses are recorded. The first participant was enrolled on November 27, 2024. All participants complete a sequence of physical tasks under two conditions: viewing low-arousal and high-arousal images from the International Affective Picture System. The physical tasks involve standing up from a chair, walking to a table, transferring water between bottles, returning to the chair, and sitting down. Emotional responses are assessed using heart rate variability, respiratory rate and subjective feelings of unease. Electromyographic signals are analysed using wearable sensors, ground pressure is recorded via pressure sensors and bottle manipulation is tracked with inertial measurement units. Furthermore, balance is evaluated using the Timed Up and Go Test and the Functional Reach Test, administered before the low-arousal condition and after the high-arousal condition. Comprehensive data analysis will provide new insights to aid professionals in designing interventions for detecting and preventing fall risk in older adults. The study was approved by the corresponding ethics committee and registered at ClinicalTrials.gov (NCT06682754) on November 21, 2024. It is being conducted at the University of Alcalá, Spain, and is funded by the European Union and the 'Junta de Castilla-La Mancha'. Principal investigators are Dr. Bernardo Alarcos and Dr. Susana Nunez-Nagy ([email protected]). The collected data will be anonymized and shared in an open-access repository, in line with ethical and open science principles.Junta de Comunidades de Castilla-La Manch
Compilación, análisis y explotación de materiales audiovisuales para el aula de inglés como lengua extranjera
Full text linkCommunication is growing more complex due to the advances in technology and the affordances of new media,
in which meanings are communicated through different modes. There is an emerging need to embrace such
communicative modes and media in the English as a Foreign Language (EFL) classroom, which can be done
through audiovisual texts such as films and series to develop students’ multimodal communicative competence.
The aim of this paper is to propose how to (i) select films and series and scenes from them to be used in the
Secondary Education EFL classroom; (ii) analyse such audiovisual material multimodally; and (iii) turn such
analysis into activities for the classroom. This process will be illustrated with the series Grace and Frankie (Marta
Kauffman and Howard J. Morris, 2015-2022). Both the script and video of a scene from this series are analysed
to understand how modes combine to create meanings. The analysis results will be presented, and exploitation
suggestions for the EFL classroom based on those results will be offered. It will be argued that using these
materials and implementing activities based on their multimodal analysis can contribute to developing students’
multimodal communicative competence, their multiliteracies and their 21st century skills.La comunicación es cada vez más compleja debido a los avances tecnológicos y a las posibilidades que ofrecen
los nuevos medios de comunicación, en los que los significados se comunican a través de distintos modos. Así,
surge la necesidad de incorporar dichos modos y medios comunicativos en el aula de inglés como lengua
extranjera (ILE), lo que puede hacerse a través de materiales audiovisuales como películas y series para desarrollar
la competencia comunicativa multimodal de los estudiantes. El objetivo de este artículo es el de proponer cómo
(i) seleccionar películas y series y escenas de las mismas para su uso en el aula de ILE de Educación Secundaria;
(ii) analizar dicho material audiovisual multimodalmente; y (iii) convertir dicho análisis en actividades para el
aula. Este proceso se ilustrará con la serie Grace and Frankie (Marta Kauffman and Howard J. Morris, 2015-
2022). Se han analizado tanto el guion como el vídeo de una escena de esta serie para comprender cómo se combinan los modos para crear significados. Se presentarán los resultados del análisis y se ofrecerán sugerencias
de explotación para el aula de ILE basadas en dichos resultados. Se argumentará que el uso de estos materiales y
la puesta en práctica de actividades basadas en su análisis multimodal pueden contribuir a desarrollar la
competencia comunicativa multimodal de los estudiantes, sus alfabetizaciones múltiples y sus competencias del
siglo XXI
Nucleic acid interaction with magnetic nanoparticles modified with carbosilane dendrimers: from water purification to virus detection
No full text12 p.In Press, Corrected ProofNucleic acids (NAs) identification is key for diagnosis, but also are contaminants in processes where the highest quality of water is required. In both cases, NAs must be removed from the medium containing them. Magnetic nanoparticles (MNPs) are applied in diagnosis and purification due to the ease of withdrawal by applying an external magnetic field. The covering of MNPs with adequate ligands improves their activity and selectivity. Herein, we report the modification of MNPs with multivalent dendritic carbosilane (CBS) systems, dendrimers and dendrons of different generation, containing a variety of functionalities (carboxylate, ammonium and guanidinium). The effects of dendritic topology, generation, and functional groups on the interaction between the MNPs and NAs were investigated. The results highlight the importance of selecting a combination of these factors to enhance the interaction between the MNPs and the NAs, according to the application. Also, competition tests with a protein, such as bovine serum albumin (BSA), have been carried out to determine the selectivity of the MNPs towards NAs. Finally, an assay in clinical samples to evaluate infection by COVID were done. These findings provide valuable insights for designing MNPs for efficient NAs capture and release with potential applications in diagnosis, NAs delivery or water purification
Von Fliegenfängern und Katzenklappen: 39 Kleinigkeiten zwischen den Arten [reseña de libro]
No full textReseña del libro: Roland Borgards, Frederike Felcht, Verena Kuni, Frederike Middelhoff, Robert Pütz und Antje Schlottmann, Hrsg. Von Fliegenfängern und Katzenklappen: 39 Kleinigkeiten zwischen den Arten (Göttingen: Wallstein, 2024), 379 S