164469 research outputs found
Sort by
Realidad gitana. 50 protagonistas: Artes y Humanidades. Ciencias. Ciencias de la Salud. Ciencias Sociales y Jurídicas. Ingeniería y Arquitectura
[ES] La presencia de profesionales universitarios en el Pueblo Gitano no está suficientemente visibilizada por los estereotipos sociales y sesgos discriminatorios que perpetúan una imagen distorsionada de la contribución del Pueblo Gitano al conjunto social. Con el fin de visibilizar la realidad del Pueblo Gitano, se presentan perfiles profesionales universitarios correspondientes a las cinco áreas de conocimiento: Artes y Humanidades, Ciencias, Ciencias de la Salud, Ciencias Sociales y Jurídicas, e Ingeniería y Arquitectura.Cerdá Hernández, Mª Rosa;García, LM. (2026). Realidad gitana. 50 protagonistas: Artes y Humanidades. Ciencias. Ciencias de la Salud. Ciencias Sociales y Jurídicas. Ingeniería y Arquitectura. https://riunet.upv.es/handle/10251/23222
Design and mechanics of stackable auxetic S-shaped structures
[EN] The emerging auxetic lattices, driven by contemporary advancements in additive manufacturing, have garnered significant attention, with an emphasis on improving structural performance and energy absorption efficiencies while mitigating the contributions of material nonlinearities and instabilities. This research advances the state of the art of thin-strut auxetic structures by introducing a stacking schema to realize 3D S-shaped polystructures with rigid-body motion-dominated deformation, spatial symmetry, and persistent auxeticity. Several generations of these polystructures were 3D printed using vat photopolymerization with varying strut thickness ranging from 1 mm to 3 mm. The additively manufactured structures were mechanically tested under quasi-static and impact loading scenarios, providing physical evidence for the foreseen structural behaviors discussed above. The polystructures yielded load-bearing-to-mass ratios of 4.6 kN/kg, 7.6 kN/kg, and 12.3 kN/kg for t1, t2, and t3, respectively, with less than 10 g of weight, a result of the rigid body motion and the asymmetric rotation of the polystructure beams. Additionally, the impact response highlighted a structure-to-material transition, resulting in similar force maxima for t1 and t2, with 9 and 10 N (structure-dominated), whereas t3 reported a force of up to 49 N (material-dominated). However, irrespective of the strut thickness, the negative Poisson's ratio remained nearly unchanged (-0.22 +/- 0.02), exemplifying the importance of the structural mechanics substantiated by the specific topological design of S-shaped unit cells. The research findings paved the way for the translational potential of S-shaped polystructures in practical applications for mitigating impact, including civilian and military loading conditions.The authors acknowledge the support of the National Science Foundation under Grant No. 2035663 (G.Y.) . Funding from the U.S. Department of Defense (W911NF1410039, W911NF1810477, W911NF2310150, and N00174-23-1-0009) is also acknowledged. The authors are also grateful for internal funding from San Diego State University and Universidad Carlos III de Madrid. In particular, this work was supported by the MCIN/AEI/10.13039/501100011033 and "European Union NextGenerationEU/PRTR" under grant PDC2021-121368-C21; the MCIN/AEI/10.13039/501100011033 under grants PID2020-112628RA-I00 and PID2020-118480RB-C22.Rufo-Martin, C.;Infante-García, Diego;Diaz-Alvarez, J.;Miguelez, MH.;Youssef, G. (2026). Design and mechanics of stackable auxetic S-shaped structures. European Journal of Mechanics - A/Solids. 116. https://doi.org/10.1016/j.euromechsol.2025.105874S11
Generació automàtica d’informes radiològics de Tòrax amb arquitectura GIT
[ES] La generación automática de informes radiológicos a partir de imágenes médicas representa una oportunidad para optimizar el diagnóstico clínico, estandarizar la calidad del reporte médico y reducir la carga de trabajo de los profesionales de la salud. Dado que, el análisis de las imágenes radiológicas y la redacción de sus respectivos informes requiere tiempo y experiencia especializada, el desarrollo de herramientas automatizadas puede mejorar la eficiencia del sistema sanitario.
Este trabajo explora el potencial de los modelos GIT (Generative Image-to-Text Transformers) para la generación automática de informes clínicos a partir de radiografías de tórax, utilizando como base el conjunto de datos MIMIC-CXR, uno de los más amplios disponibles públicamente en el ámbito médico.
Los objetivos principales incluyen:
(1) evaluar la capacidad de los modelos GIT para generar informes radiológicos precisos y clínicamente relevantes; y (2) estudiar el impacto de técnicas como text augmentation y curriculum learning (entrenamiento progresivo basado en la dificultad del texto) para mejorar el rendimiento del modelo.
Los resultados experimentales demuestran que el modelo propuesto logra métricas comparables con el estado del arte en tareas de generación de lenguaje natural y supera resultados previos en métricas de precisión clínica como F1cXb. De esta forma, este estudio aporta evidencia del potencial de los modelos GIT y estrategias como curriculum learning para asistir en la generación de reportes médicos de alta calidad y abre camino al uso de estrategias de entrenamiento más sofisticadas en este dominio.[EN] The automated generation of radiology reports from medical images presents an opportunity to optimize clinical diagnosis, standardize the quality of medical reporting, and reduce the workload of healthcare professionals. Since the interpretation of radiological images and the drafting of these reports require time and specialized expertise, the development of automated tools can significantly improve the efficiency of healthcare systems.
This work explores the potential of GIT models (Generative Image-to-Text Transformers) for automated generation of clinical reports from chest X-ray images, using the MIMIC-CXR dataset, one of the largest publicly available datasets in the medical domain.
The main objectives include:
(1) evaluating the ability of GIT models to generate accurate and clinically relevant radiology reports; and (2) studying the impact of techniques such as text augmentation and curriculum learning (progressive training based on text difficulty) to enhance the model s performance.
Experimental results show that the proposed model achieves metrics comparable to the current state of the art in natural language generation tasks, and surpasses previous results in clinical accuracy metrics such F1cXb. Overall, this study provides evidence of the potential of GIT models and training strategies such as curriculum learning to support the generation of high-quality medical reports, paving the way for the adoption of more sophisticated training methodologies in this field.Marin Delgado, JS. (2025). Generación automática de informes radiológicos de radiografías Tórax usando una arquitectura GIT. https://riunet.upv.es/handle/10251/231383TFG
Measuring the Variability of Outcomes of the New Natural Daylighting Requirements in the Basque Country's Habitability Decree
[EN] The Basque Country's Habitability Decree of 2022 redefines natural lighting requirements in residential spaces, increasing the Wall-to-Floor Ratio (WFR) compared to previous municipal and sectoral standards, based on the depth of the space considered. This regulatory adjustment seeks to optimise the quality of natural light, a key factor for well-being. However, the application of a geometric rule based on fixed proportions raises questions about the variability of achievable lighting results and their suitability for residential comfort needs. This study analyses the implementation of the regulation in two bedroom models, BR1 and BR2, selected as the typical and the deepest, but with less than 4 metres and meeting the rest of the dimensional requirements, respectively. Through simulations of the Daylight Factor (DF) using window proportions of 1:1, 3:2, 2:1, and 1:2 under a CIE overcast sky model, the dispersion in the obtained natural lighting has been examined. Such analysis allows for the quantification of lighting result variability within the regulatory parameters, exploring the complexity of meeting lighting requirements through an approach based exclusively on geometric proportions. Additionally, the impact of architectural and urban variables such as building height, the presence of courtyards, street width, and balcony depth has been considered. These factors, often overlooked in regulations and indirectly considered in D80/2022, play an important role in modulating natural light and lighting quality. At the end, the paper comments on the advantages and limitations of regulating natural light through arithmetic or geometric rules like the WFR, comparing this method with approaches based on detailed room-by-room analysis.This document is one of the first works of the Lab for Sustainability and Health in the Built Environment and dissemination of the SDGs in the School of Architecture, under the Campus Bizia Lab (CBL) program of the University of the Basque Country UPV-EHU. The work included in this paper and its publication was funded by the Directorate for Sustainability and Social Commitment of the University of the Basque Country UPV-EHU.Otaegi, J.;Rodríguez-Vidal, I. (2026). Measuring the Variability of Outcomes of the New Natural Daylighting Requirements in the Basque Country's Habitability Decree. En Editorial Universitat Politècnica de València, (pp. 876-888). https://doi.org/10.4995/VIBRArch2024.2024.18178OCS87688
Flujo en lámina libre. Energía específica aplicada a la descarga libre de una compuerta sumergida
[ES] Este objeto de aprendizaje aborda la aplicación del concepto de energía específica al análisis de la descarga libre generada por una compuerta sumergida en flujo en lámina libre. Se estudia cómo la presencia de la compuerta y su condición de sumergencia modifican la distribución de velocidades, la profundidad del flujo y la energía disponible aguas abajo.https://polimedia.upv.es/visor/?id=79badb10-bbe1-11f0-b2cd-95ed93c70723Pérez-Sánchez, Modesto;López Jiménez, Petra Amparo (2026). Flujo en lámina libre. Energía específica aplicada a la descarga libre de una compuerta sumergida. https://riunet.upv.es/handle/10251/231812DE
Image database of synthetic capacitive Electrochemical Impedance Spectroscopy (EIS) spectra for system identification [Dataset]
File List:
- Class_1: A folder with 12 000 different examples with 1 time constant. Each example is stored in
an individual subfolder labeled according to its corresponding example number (Ex_X,
where X ranges from 1 to 12 000). Each example subfolder contains 2 different files
labeled according to their corresponding example number: a PNG file (Ex_X_Nq.png), and a
TXT file (Ex_X_mtdt.txt). The Ex_X_Nq.png file contains a 200x200-pixel image of the
Nyquist plot for the X example, with equal axis aspect ratio and no axis representation.
The Ex_X_mtdt.txt file includes the metadata of example X. The information in the metadata
file comprises 10 different items:
1.) Frequency-domain range,
2.) Number of frequency-domain sampling points,
3.) Real circuit (i.e. the Voigt circuit used to generate the EIS spectrum),
4.) Name of the parameters of the real circuit,
5.) Value of the parameters of the real circuit,
6.) Fitted circuit (i.e. the simplest Voigt circuit capable of properly fitting the EIS spectra),
7.) Name of the parameters of the fitted circuit,
8.) Value of the parameters of the fitted circuit,
9.) Name of the fitness goodness parameters,
10.) Value of the fitness goodness parameters.
- Class_2: A folder with 12 000 different examples with 2 time constants. Each example is
stored in a separate subfolder, containing a PNG file and a TXT file as described
for class 1.
- Class_3: A folder with 12 000 different examples with 3 time constants. Each example is
stored in a separate subfolder, containing a PNG file and a TXT file as described
for class 1.
- Class_4: A folder with 12 000 different examples with 4 time constants. Each example is
stored in a separate subfolder, containing a PNG file and a TXT file as described
for class 1.
Methodological information:
The database was automatically populated with Nyquist plots of synthetic EIS spectra corresponding
to capacitive Voigt circuits containing between 1 time constant and 4 time constants. The database
generation involved 3 different processes: (1) generation of the EIS spectra, (2) labelling of the
spectra, and (3) generation of the data.
In order to generate an EIS spectrum, first, the Voigt circuit parameters were selected by randomly
sampling resistance and time constant values from uniform probability distributions. For the
resistances, the electrolyte resistance was sampled from a uniform distribution in the range
50–100 Ω; and the rest of the resistances were sampled from a uniform distribution within the range
10–500 Ω. The time constants were sampled from equispaced and non-overlapping distributions:
1e-5–5 s for the first time constant, 20-25 s for the second one, 40-45 s for the third one, and
60-65 s for the fourth one. The capacitances were calculated from the corresponding resistance and
time constant. Once the time constants values were defined, the frequency-domain range was selected
to fully encompass the different characteristic frequencies (i.e. inverse of the time constants).
Specifically, the lower frequency limit was set to be 70 times lower than the smallest
characteristic frequency; and the upper frequency limit was set to be 70 times higher than the
largest characteristic frequency. The resulting frequency-domain range was then sampled at 300
logarithmically equispaced points. Given the Voigt circuit parameters and the list of sampled
frequencies, the EIS spectrum was simulated by computing the impedance of the Voigt circuit for
each frequency in the list.
The spectrum was not labelled using the original Voigt circuit used to generate it; but instead, it
was labelled as the "simplest" Voigt circuit that can reproduce "correctly" the spectrum (i.e.
parsimony principle). In this context, Voigt circuits were sorted from "simplest" to "most complex"
according to the number of time constants (i.e. a Voigt circuit with fewer time constants, is
considered "simpler" than another Voigt circuit with more time constants). In order to label a
given EIS spectrum, it was sequentially fitted from the "simplest" (1 time constant) to the
"most complex" (4 time constants) Voigt circuit using Complex Nonlinear Least Square (CNLS)
regression, obtaining the corresponding fitness goodness. The EIS spectrum was labelled as the
"simplest" Voigt circuit (i.e. with fewer time constants) with a determination coefficient equal or
above 0.9985.
Once the EIS spectrum was generated and labelled, the data files (i.e. Nyquist plot image file and
metadata text file) were generated and stored in the corresponding class folder (i.e. Class_1,
Class_2, Class_3, or Class_4) and in the corresponding example subfolder (i.e. Ex_X).
This procedure was repeated for the 48 000 different examples in the database and was
carried out in Python 3.10.11.The database comprises 48 000 different examples consisting in synthetic Nyquist plots generated using Voigt circuits with between one and four time constants. The examples are classified into 4 different classes acording to the number of time constants: class 1 corresponds to 1 time constant, class 2 to 2 time constants, class 3 to 3 time constants, and class 4 to 4 time constants.Espectroscopía de impedancias electroquímicas. Identificación de circuitos eléctricos equivalentes vía inteligencia artificial project. Project founded by Universidad Politécnica de Valencia (PAID 01-22).Pérez Herranz, V.;Giner Sanz, JJ.;Sáez Pardo, F.;Pérez-Herranz, Valentín;Giner-Sanz, Juan José;Sáez-Pardo, Fermín (2026). Image database of synthetic capacitive Electrochemical Impedance Spectroscopy (EIS) spectra for system identification [Dataset]. Universitat Politècnica de València. https://riunet.upv.es/handle/10251/23150
Proposta de regeneració urbana, revitalització i repotenciació del barri San Carlos Quito - Equador
[ES] La investigación se centra en el análisis en el proceso de transformación de uno de los barrios más emblemáticos de Quito, el barrio San Carlos, uno de los barrios históricos que promocionó la vivienda colectiva, de interés social, en Quito, en el período de 1970. Este proyecto marcó uno de los planes habitacionales más importantes y ambiciosos de la ciudad, que se replicó en distintas zonas al sur y norte de la ciudad, brindando un nuevo estatus a la población obrera y trabajadora de aquellos tiempos. un proyecto que después de casi 50 años ha sufrido un deterioro a nivel del paisaje y entorno urbano, deficiencia en calidad, en cuanto a la calle, áreas verdes, áreas comunales y equipamientos existentes, poca apropiación del espacio público e inseguridad entre los habitantes.
Análisis, búsqueda de fuentes de información, bibliografía, y aporte de conclusiones criticas.[EN] This research focuses on the process of transformation of one of Quito s most emblematic ÁREAs: the San Carlos neighborhood, historically known for promoting collective housing and social interest programs in the municipality during the 1970s. This initiative marked one of the most important and ambitious housing plans of the city, replicated in multiple sectors across the southern and northern zones, and granting a new status to the working-class population of the time. Nearly fifty years later, the ÁREA has undergone visible deterioration at both landscape and urban levels: aging building façades, damaged streets and sidewalks lacking proper furniture, trees, and spatial dimensions; insufficient quality and maintenance of green ÁREAs, neglected or underused communal zones, and low appropriation of public space that fails to encourage its use and enjoyment.
The objective is to carry out a diagnosis that examines historical background, the regulatory framework in force at the time (to determine the context behind such public promotion), its position within the city, main characteristics, level of execution regarding services and infrastructure, and the sociopolitical context which has notably evolved.
The study includes the analysis of urban indicators that establish an objective basis for proposing strategic intervention lines and a roadmap for the rehabilitation of this urban ÁREA, reinforcing the relevance of recovering consolidated zones in the city while curbing uncontrolled urban sprawl.Gomezcoello Gracia, JE. (2025). Propuesta de regeneración urbana, revitalización y repotenciación del barrio San Carlos Quito - Ecuador. https://riunet.upv.es/handle/10251/231689TFG
Campillo per fases
[ES] Atrapada en el recuerdo, la esencia del pequeño municipio conquense de Campillo de Altobuey habita más en la memoria de sus nómadas pobladores que en la materialización física de sus calles.
Tras el éxodo rural vivido en la España de mitad de siglo XX, los pueblos rurales se vieron despojados de carácter al exportar sus vecinos a las ciudades. La escapada agrícola provocó la trasformación de los pueblos vacíos en parajes estivales, donde su densidad demográfica se duplica en verano, ocasionando alteraciones en el tejido social.
Esta singular circunstancia de la España rústica motiva la necesidad de incorporar nuevos enfoques de habitabilidad en el planeamiento de los nexos de convivencia de los pueblos, con la intención de establecer un diálogo entre los diferentes cambios de fase.
La conversación se da en el casco histórico de Campillo, donde a partir de una serie de intervenciones arquitectónicas se busca dar forma a las acciones invisibles que transcurren entre la fase sólida y la fase líquida del municipio manchego.
El proyecto se compone de cinco fragmentos: un teatro, un centro cívico, un museo, un centro cultural y una sombra. Estas piezas se encuentran esparcidas a lo largo del casco histórico de la localidad, con el propósito de esponjar el tejido urbano permitiendo un mayor grado de habitabilidad y domesticidad del espacio público.[EN] Trapped in memory, the essence of the small Cuenca town of Campillo de Altobuey resides more in the memories of its nomadic inhabitants than in the physical embodiment of its streets.
After the rural exodus experienced in mid-20th-century Spain, rural villages were stripped of character as their residents were expelled to the cities. This agricultural exodus transformed empty villages into summer resorts, where their population density doubles in summer, causing disruptions to the social fabric.
This unique circumstance of rural Spain motivates the need to incorporate new approaches to habitability into the planning of the towns' social nexus, with the intention of establishing a dialogue between the different phases.
The conversation takes place in the historic center of Campillo, where, through a series of architectural interventions, the project seeks to give shape to the invisible actions that occur between the solid and liquid phases of the La Mancha municipality.
The project is composed of five fragments: a theater, a civic center, a museum, a cultural center, and a shadow. These elements are scattered throughout the town's historic center, with the aim of loosening the urban fabric, allowing for a greater degree of habitability and domesticity in the public space.Collado Martínez, J. (2025). Campillo por fases. https://riunet.upv.es/handle/10251/232308TFG
Desenvolupament d’un algorisme de planificació energètica per a l’assignació de recursos en un sistema híbrid renovable amb hidràulica i biogàs implementat en python
[ES] El presente trabajo plantea el diseño e implementación en Python de un algoritmo de planificación energética para la asignación de recursos en un sistema híbrido de energía renovable orientado a una comunidad rural. La asignación eficiente de recursos tiene como objetivo la desconexión parcial o total de la red eléctrica para minimizar los costes energéticos.
El sistema integra generación hidroeléctrica, un módulo de biogás, energía solar fotovoltaica, energía eólica y la red como respaldo. El algoritmo se organiza en cuatro módulos de optimización sucesivas: primero se realiza la asignación hidroeléctrica; luego, se incorpora el biogás; posteriormente, se ejecuta la asignación dinámica de volúmenes empleando como criterio de optimización la reducción del costo de energía de la red hasta llegar al costo más bajo posible; finalmente, se regulan los excedentes de energía de las fuentes renovables eólica y fotovoltaica.
Además, se implementa la visualización de resultados que permite analizar gráficamente la demanda, la asignación por fuente renovable, la evolución de los volúmenes de los recursos y el precio horario de la electricidad, evaluando tanto el desempeño técnico como el impacto económico. Los resultados esperados son que la estrategia reduzca significativamente el uso de la red y favorezcan el consumo de energía renovable, mostrando la viabilidad de la planificación inteligente en sistemas híbridos rurales como alternativa sostenible.[EN] This paper presents the design and implementation in Python of an energy planning algorithm for resource allocation in a hybrid renewable energy system aimed at a rural community. The efficient allocation of resources aims to partially or totally disconnect from the electricity grid in order to minimise energy costs.
The system integrates hydroelectric generation, a biogas module, solar photovoltaic energy, wind energy, and the grid as a backup. The algorithm is organised into four successive optimisation modules: first, hydroelectric allocation is performed; then, biogas is incorporated; next, dynamic volume allocation is executed using the reduction of grid energy costs as the optimisation criterion until the lowest possible cost is reached; finally, energy surpluses from renewable wind and photovoltaic sources are regulated.
In addition, the visualisation of results is implemented, allowing for graphical analysis of demand, allocation by renewable source, the evolution of resource volumes and the hourly price of electricity, evaluating both technical performance and economic impact. The expected results are that the strategy will significantly reduce grid usage and favour renewable energy consumption, demonstrating the viability of smart planning in rural hybrid systems as a sustainable alternative.Chasi Sandoval, EJ. (2025). Desarrollo de un algoritmo de planificación energética para asignación de recursos en un sistema híbrido renovable con hidráulica y biogás implementado en Python. https://riunet.upv.es/handle/10251/231384TFG
Google Académico
Guía de uso de Google Académico elaborada por la Biblioteca de Informática y Documentación Enric Valor (Versión actualizada en febrero de 2026).Biblioteca de Informática y Documentación Enric Valor (2024). Google Académico. Universitat Politècnica de València. https://riunet.upv.es/handle/10251/9093