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The ribbed vaults of the church of the Annonciade convent in Bordeaux
No full textThis paper focuses on the design and construction of the church of the Annonciade Convent in Bordeaux, with a particular focus on the ribbed vaults. Constructed over a number of phases from the 16th through to the early 17th century, this complex features several ribbed vaults of different shapes and design. This includes two surbased vaults which are singular examples of this vaulting typology. The main objective of the research was to identify the geometric and constructive criteria used for the ribbed vaults, and how these changed over the course of the construction process.
The research process was based on interdisciplinary collaboration between specialists in the fields of Construction History and the History of Architecture. It involved carrying out two parallel lines of investigation: a review of archival documentation relevant to the construction process, and an analysis of physical structure of the church and the vaults as they currently exist. The conclusions are the result of bringing together these two approaches. This paper offers a deeper understanding and appreciation of the singular historical and architectural value of the church of the Annonciade Convent, and the construction process which involved revisions in the original plan over a period of more than 150 years
El impacto de la inteligencia artificial en la prevención de riesgos laborales desde una perspectiva de género
No full textThe advancements in the field of Artificial Intelligence are impacting all areas of law, including Labor Law, and specifically Occupational Risk Prevention Law, which is no exception to this phenomenon. As in other fields, the effects can be positive or negative, especially when examined through a gender perspective. AI systems can enhance the protection of workers' health and safety, but at the same time, they generate new or redefined occupational risks, which are exacerbated if the gender perspective is not considered in their design and application. The research conducted analyzes what these risks are and how to address them. In this regard, it is essential to consider recently adopted European regulations, such as the Artificial Intelligence Act and the Platforms Directive, and their implications for effectively protecting workers' health and safety from a gender perspective.; Los avances producidos en el campo de la Inteligencia Artificial están afectando a todos los ámbitos jurídicos y el Derecho del Trabajo, y específicamente el Derecho en Prevención de Riesgos Laborales no es ajeno a este fenómeno. Y como sucede con el resto de campos, los efectos pueden ser positivos o negativos y más si se examinan con perspectiva de género. Los sistemas de IA permiten mejorar la protección de la salud y seguridad de las personas trabajadoras, pero, al tiempo, generan nuevos o remozados riesgos laborales, que se intensifican de no atender a la perspectiva de género en su diseño y aplicación. La investigación desarrollada analiza cuáles son y cómo abordarlos. En esa senda, es preciso atender a las normas recientemente aprobadas en el ámbito europeo, como el Reglamento de Inteligencia Artificial y la Directiva de plataformas y sus implicaciones a la hora de proteger la salud y seguridad de las personas trabajadoras con perspectiva de género de forma efectiva.; Adimen Artifizialaren arloan egindako aurrerapenek eremu juridiko guztiei eta Lanaren Zuzenbideari eragiten diete, eta, bereziki, Laneko Arriskuen Prebentzioari dagokionez, fenomeno hori gertatzen ari da. Eta gainerako eremuekin gertatzen den bezala, ondorioak positiboak edo negatiboak izan daitezke, eta are gehiago genero-ikuspegiarekin aztertzen badira. Adimen Artifizialaren sistemek langileen osasunaren eta segurtasunaren babesa hobetzea ahalbidetzen dute, baina, aldi berean, laneko arrisku berriak edo berrituak sortzen dituzte, eta horiek areagotu egiten dira diseinuan eta aplikazioan genero-ikuspegia kontuan hartzen ez bada. Garatutako ikerketak zeintzuk diren eta nola ekin aztertzen du. Bide horretan, Europan berriki onartu diren arauak hartu behar dira kontuan, hala nola Adimen Artifizialaren Erregelamendua eta plataformen Zuzentaraua, eta horien inplikazioak genero-ikuspegia duten langileen osasuna eta segurtasuna modu eraginkorrean babesteko orduan
Desarrollo e implementación del sistema de control de un convertidor DC/AC con función de extinción de faltas.
No full textEn este Trabajo de Fin de Máster se desarrolla una estrategia de control para un convertidor back-to-back de cuatro ramas, destinado a corregir faltas monofásicas a tierra en redes eléctricas de distribución. La solución propuesta se basa en el uso de la tensión homopolar para identificar y compensar las variaciones de tensión en la fase afectada, manteniendo constantes las tensiones compuestas. Para validar la efectividad del sistema, se ha llevado a cabo una doble metodología: por un lado, cálculo teórico de los controladores del sistema y simulaciones detalladas en Simulink y, por otro, ensayos experimentales en tiempo real utilizando la plataforma OPAL-RT y el sistema de potencia Imperix Power Rack. Aunque el diseño teórico mostró un buen comportamiento en simulación, los resultados obtenidos en laboratorio no han replicado completamente dicho rendimiento, lo que ha puesto de manifiesto la importancia de la validación experimental en condiciones reales. Este trabajo sienta las bases para futuras investigaciones orientadas a la mejora del control de convertidores en presencia de faltas, así como al desarrollo de sistemas más robustos y fiables para la integración en redes eléctricas reales
Towards greener furfural: evaluating the technical, economic and environmental feasibility of heterogeneous catalysis in biomass conversion
No full textFurfural is a key biomass-derived platform chemical with a large market volume, yet its production has largely been outsourced from Europe due to the high energy demand for reactor heating and the significant environmental impact of acidic waste generation. Current industrial processes, predominantly the Chinese Batch Process (CBP), rely on sulphuric acid as a catalyst and require extensive steam stripping, contributing significant environmental constraints. This study explores the feasibility of a more sustainable furfural production by evaluating an alternative process based on a heterogeneous acid catalyst. The proposed process integrates scale-up considerations to improve reactor performance, replacing steam stripping with nitrogen stripping and sulphuric acid with Amberlyst-70® as heterogeneous catalyst. A detailed process simulation, techno-economic analysis (TEA), and life cycle assessment (LCA) were conducted to compare the material and energy balances of both processes and to assess the viability of the heterogeneous catalytic process (HCP). Results indicate that the current selectivity of Amberlyst-70® is insufficient for technical feasibility, as a 5.5-fold improvement in furfural-to-tar selectivity is required to match the steam consumption of CBP. If this target is met, both processes exhibit similar minimum selling prices (>€3000 per t), although significantly above current market levels. However, the HCP presents a potential cost reduction pathway (<€1000 per t) through the valorisation of lignin and cellulose by-products, offering a competitive advantage. Environmental analysis highlights key benefits of the HCP, including a significant reduction in freshwater ecotoxicity by eliminating sulphuric acid and improved energy efficiency through enhanced process integration. Nonetheless, energy consumption and maize cob usage remain critical environmental hotspots. Overall, the study identifies catalyst selectivity as the key bottleneck preventing the implementation of the HCP. Further development of a more selective and stable heterogeneous catalyst, alongside integrated biorefinery strategies, could enable the competitive and sustainable production of furfural.This work received financial support from the Spanish Ministry
of Science and Innovation through Cat4BioMon Project (PID2021-122736OB-C43 & PID2021-122736OB-C44), being
funded through MCIN/AEI/10.13039/501100011033/FEDER, UE
Kulturartekotasuna gaur egungo hezkuntzan eta bere eragina heziketa fisikoan
No full text53 p. -- Bibliogr.: p. 38-41[EUS] Lan honen helburua da kulturartekotasunak Lehen Hezkuntzako Heziketa Fisikoan duen eragina aztertzea, bereziki bizikidetza, integrazioa eta kohesio soziala nola lantzen diren ulertzeko. Horretarako, sei Heziketa Fisikoko irakasleri elkarrizketak egin zaizkie: hiru ikastetxe interkultural handikoak eta hiru aniztasun txikiagokoak. Emaitzek erakutsi dute irakasleen diskurtsoak testuinguruaren arabera aldatu egiten direla, baina estrategiak oso antzekoak direla kasu guztietan. Nabarmendu da Heziketa Fisikoa gizarteratzeko eta elkar ulertzeko tresna indartsua dela eta jolasa, bereziki, ikasleen arteko harremanak sendotzeko biderik eraginkorrena. Lan honek azpimarratzen du beharrezkoa dela HFren dimentsio soziala gehiago lantzea eta kulturartekotasunaren inguruko prestakuntza pedagogikoa indartzea.[ES] El objetivo de este trabajo es analizar el impacto de la interculturalidad en la Educación Física de Primaria, especialmente para entender cómo se trabaja la convivencia, la integración y la cohesión social. Para ello, se han realizado entrevistas a seis profesores de Educación Física: tres de centro intercultural alto y tres de menor diversidad. Los resultados muestran que los discursos del profesorado varían en función del contexto, pero que las estrategias son muy similares en todos los casos. Se destaca que la Educación Física es un potente instrumento de socialización y entendimiento mutuo; y el juego, en particular, la vía más eficaz para fortalecer las relaciones entre el alumnado. Este trabajo subraya la necesidad de trabajar más la dimensión social de la EF y reforzar la formación pedagógica en materia de interculturalidad
Generative AI use cases in procurement: a strategic analysis and proposal for initial deployment.
No full textThis thesis investigates the potential of Generative Artificial Intelligence (AI) to create value in procurement by identifying relevant use cases, evaluating their strategic impact, and proposing a structured plan for initial deployment. With the growing importance of digital transformation in procurement, the study focuses on how Generative AI technologies—such as large language models and intelligent agents—can enhance key procurement processes across three core areas: Plan-to-Strategy, Source-to-Contract, and Purchase-to-Pay. The research begins with a literature review that outlines recent developments in Generative AI and their applications in business. It then analyzes current trends in procurement, highlighting both the challenges and opportunities associated with digital technologies. Based on this context, a longlist of potential AI use cases is developed and narrowed down through expert input and structured evaluation. To prioritize the most promising use cases, a Weighted Decision Matrix is introduced. Four key criteria—Impact on Efficiency, Cost Reduction, Implementation Feasibility, and Risk Mitigation—are selected and weighted based on insights from a professional survey of 25 procurement practitioners. This method ensures that the scoring reflects actual industry priorities. The top-rated use cases include automated contract generation, AI-supported negotiation, and invoice processing. A phased implementation roadmap is proposed, offering guidance on how organizations can begin deploying Generative AI responsibly and effectively. Overall, the thesis offers both a theoretical and practical contribution to the field of procurement by connecting emerging AI technologies with real-world business needs
El principio estructural sobre la prohibición de amenaza o uso de la fuerza: retos y peligros actuales
No full textLa prohibición de la amenaza o uso de la fuerza constituye uno de los principios fundamentales del Derecho internacional, hasta el punto de ser calificado como la piedra angular de todo el ordenamiento por su papel esencial en el funcionamiento de todo el sistema internacional. En este conversatorio, diferentes especialistas examinan algunos de los principales retos y amenazas que enfrenta en la actualidad, a saber, el papel del Consejo de Seguridad respecto a la prohibición, la crisis actual de las operaciones de mantenimiento de la paz, su relación con la responsabilidad de proteger, su aplicación en el ciberespacio y en el espacio ultraterrestre, los usos de la fuerza contra misiones diplomáticas y consulares, las implicaciones de la doctrina unwilling or unable y, finalmente, el riesgo que supone la pasividad de los Estados frente a su violación
Il ricorso alla dote a Catania, Paternò e Randazzo dal principio del XV alla metà del XVI secolo
No full textBisogni economici, conformismo sociale, rapporti successori, forme di controllo familiare costituiscono le principali aspettative ed esigenze legate all’istituto della dote. Il passaggio dei beni era raramente eludibile nelle contrattazioni tra le famiglie nella Sicilia bassomedievale. Per il Quattrocento sino a metà del Cinquecento, i 105 contratti dotali qui esaminati riguardano tre comunità della Sicilia orientale, Catania, Paternò e Randazzo, tra loro vicine e legate da connessioni economiche e da medesime norme consuetudinarie o di diritto privato. Questo studio prende in esame l’organizzazione dei rapporti parentali e successori e le ragioni che spingevano a scegliere i beni e il luogo di residenza dei coniugi. La tipologia dei beni permette di approfondire l’importanza economica e simbolica della dote e il ruolo della donna sulla stessa. I limitati dati disponibili sulla residenza non consentono generalizzazioni ma offrono alcune informazioni significative. L’analisi proposta conferma la necessità di connettere teoria e prassi e che solo una precisa contestualizzazione rende possibile superare una lettura approssimativa
Juventud y violencia sexual: el papel de las redes sociales en Ni una más
No full textYouth series play a key role in the construction of the identity of adolescents by acting as symbolic mirrors of their social dynamics. In this framework, the series Ni una más is a milestone in the representation of gender inequalities by addressing from multiple perspectives how rape culture permeates society through social networks. Based on a Critical Discourse Analysis, this study examines the use that youth make of these platforms in the narrative, and how they are used to amplify or counteract violence.; Las series juveniles desempeñan un papel clave en la construcción de la identidad de los adolescentes al actuar como espejos simbólicos de sus dinámicas sociales. En este marco, la serie Ni una más supone un hito en la representación de las desigualdades de género al abordar desde múltiples perspectivas cómo la cultura de la violación se impregna en la sociedad a través de las redes sociales. A partir de un Análisis Crítico del Discurso, este estudio examina el uso que hacen la juventud de estas plataformas en la narrativa, y cómo son empleadas para amplificar o contrarrestar la violencia
“The University of the Poor" or Vocational Training in the Schools of Arts and Crafts in the Basque Country
No full textOne of the keys to understanding the process of industrialisation and modernisation in Spain is to know the relationship between vocational education and training (VET) and the curricular changes. Since the mid-19th century, the Basque Country has undergone a singular process in the development of VET such that it has become a model of reference. Explaining the creation of this process is complex, but the fact that companies, factories, local and regional institutions opted for professional training institutions to establish a network of schools of arts and trades that adapted to economic, social and educational needs. The creation of different types of schools –generally in industrialised towns– was thus made possible. Based on the use of primary sources, this article seeks to explain this process in order to analyse the policies designed to promote vocational training through a curriculum oriented towards job placement.Grupo de Investigación Ikasgaraia, reconocido por el Gobierno Vasco con el código IT 1637-2