Poli[Papers] (Universitat Politècnica de València)
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Digital Value Stream Mapping through Simulation in the Automotive Wiring Industry
Get PDFIn the context of Industry 4.0, integrating digitalization with Lean Manufacturing tools has become a critical strategy for improving operational performance in complex production environments. This paper presents a real-world case study from the automotive wiring industry, where Digital Value Stream Mapping (DVSM) is implemented using Tecnomatix Plant Simulation software to address inefficiencies in production processes. The objective of the study is to identify bottlenecks, reduce waste, and optimize resource utilization through a simulation-based approach. A selected product family is analyzed using current state mapping, followed by simulation to evaluate operational performance and propose data-driven improvements. The results show significant gains: production efficiency was increased, rework and scrap were reduced, and total lead time was also minimized. These improvements were achieved through interventions such as workstation consolidation, workforce optimization, and the implementation of a pull system supported by FIFO logic and pacemaker scheduling. The study demonstrates the potential of DVSM as a practical decision-support tool, enabling manufacturing organizations to digitally model and validate process improvements prior to implementation. These findings contribute to the advancement of lean digitalization strategies in high-variability industrial settings
El Teatro Guimerá de Santa Cruz de Tenerife: conservación del repertorio ornamental
Get PDFThe Teatro Guimerá is a valuable reflection of the transformations that Tenerife society has undergone since the mid-nineteenth century, as a result of economic development and the establishment of the bourgeois ideal of socialization and artistic expression. The first project for the theatre was commissioned to Manuel de Oraá in 1848, and the building later underwent various construction phases, with the architect Antonio Pintor´s intervention in the early twentieth century being particularly noteworthy. The typology of the building follows the Italian model, with a horseshoe-shaped auditorium and tiered boxes. This text provides a detailed overview of this ornamental background, aimed at characterising the constituent materials and reconstructing their material evolution.El Teatro Guimerá constituye un valioso testimonio de las transformaciones que experimentó la sociedad tinerfeña desde mediados del siglo xix, fruto del desarrollo económico y de la consolidación del ideal burgués de socialización y expresión artística. El primer proyecto del teatro fue encargado a Manuel de Oraá en 1848, y posteriormente el edificio experimentó distintas fases constructivas, destacando la intervención del arquitecto Antonio Pintor a principios del xx. La tipología del edificio sigue el modelo «a la italiana», con planta en forma de herradura y palcos en distintos niveles. Este texto ofrece una panorámica detallada de este bagaje ornamental, orientada a caracterizar los materiales constitutivos y reconstruir su evolución material
DeepSeek’s Feedback on Short Essay-Writing in EFL: Pre-service Primary School Teachers’ Perceptions
Get PDFOver the past few years, there has been a growing use of generative Artificial Intelligence (AI) tools to support the development of writing skills among language learners. However, limited attention has been given to the potential of AI in pre-service teacher (PST) education, and specifically, the tool DeepSeek has yet to be examined. This study, therefore, aims to investigate PSTs’ perceptions of the usefulness of DeepSeek's feedback on the production of a text following a task-based teaching intervention. Thirty-nine primary education pre-service teachers took part, they were first-year students from a Spanish university whose English proficiency ranged from A2 to B2. The task required them to write a short essay. Data were collected using a pre- and post-test with open-ended questions adapted from Di Sarno-García and Argüelles-Álvarez (in press), along with a focus group discussion, thus adopting a mixed-methods approach that triangulates quantitative and qualitative data. The results of the Wilcoxon signed-rank test indicated a statistically significant decline in some items, as well as a slight decrease in mean scores from pre- to post-test which are aligned with the participants’ contributions from the open-ended questionnaire and focus group. These findings suggest that DeepSeek may not have been as effective as anticipated in providing feedback on content and text organisation for this particular task. Nevertheless, participants reported that they found the tool helpful for improving grammar, vocabulary, and spelling in their texts
Air raid shelters as tangible cultural heritage: analysis and strategies for their study and 3D documentation
Get PDFPublic air raid shelters, which emerged as a response to massive bombardment of the civilian population, were put to the test for the first time in history during the Spanish Civil War. This sample of defensive architecture represents a unique type of tangible cultural heritage with a high associated significance. Taking as a case study two significant shelters in the central peninsular area, this article analyses their historical evolution, their architectural characteristics and, especially, the possibilities offered by their documentation using 3D technologies. It evaluates the physical, technical and contextual particularities that condition their documentation, conservation and enhancement. The uniqueness of its architecture and the underground context, presents many challenges when it comes to studying and documenting it. However, the new three-dimensional documentation technologies have reached a sufficient degree of maturity to allow their study in a generalised manner and the obtaining of precise and expressive documentation, which not only facilitates their architectural study, but also their dissemination and valorisation, as spaces charged with historical memory
Un rostro del Caribe precolombino: proceso metodológico para la aproximación facial en 3D de un individuo con modificación craneal intencional
Get PDFForensic facial approximation methods are implemented in bioarchaeology to visualise the appearances of individuals from the past. This study introduces the first three-dimensional (3D) facial approximation of a pre-Columbian individual from the Caribbean, and specifically from Cuba, with intentional cranial modification (ICM). The research team designed a pipeline based on verified methods and documented the steps followed to produce the facial approximation. A detailed digital model of a pre-Columbian skull was created using high-resolution structured-light scans. Biological profile and ICM type were determined. The workflow followed standardised approximation methods to predict soft-tissue thickness and morphological facial features, while photos of Native-descendant Cuban populations were additionally considered. The final model was sculpted and textured with professional 3D modelling and digital illustration software to achieve a realistic representation. Research results suggest that the skull corresponds to an adult female with fronto-occipital ICM. Morphological indicators informed the reconstruction of a rectangular face with prominent cheekbones, a broad nose, and a subtle cleft chin. Eye placement followed anatomical parameters, and lip projection reflected maxillary prognathism for thicker lips. Ear positioning adhered to craniofacial standards; pigmentation and hair colour values were based on genetic studies of modern-day Native American populations. The final model was rendered with controlled lighting to achieve a portrait-like appearance, balancing anatomical fidelity and visual realism. Despite the methodological limitations of facial approximations, the results obtained expand understanding of the identities of pre-Columbian people in the Caribbean, and of their human history and cultural evolution in the Americas. This project goes beyond giving a face to a pre-Columbian individual: it opens a window to expand the value of bioarchaeological museum collections for both the general public and researchers in this field. Ultimately, the objective is to contribute to the increasing efforts to decolonise museum narratives, ethically representing a face from Caribbean past populations.Los métodos forenses de aproximación facial se emplean en la bioarqueología para reconstruir la apariencia de individuos del pasado. Este estudio presenta la primera aproximación facial tridimensional (3D) de un individuo precolombino del Caribe, específicamente de Cuba, con una modificación craneal intencional (MCI). El equipo de investigación diseñó un proceso basado en métodos verificados y documentó los pasos a seguir para producir la aproximación facial. Fue creado un modelo digital detallado de un cráneo precolombino mediante escáneres de luz estructurada de alta resolución. Se determinaron el perfil biológico y el tipo de MCI. El flujo de trabajo siguió métodos de aproximación estandarizados para predecir el grosor de tejidos blandos y los rasgos morfológicos faciales, y se consideraron, además, fotografías de poblaciones cubanas descendientes de nativos. El modelo final se esculpió y texturizó con software profesional de modelado 3D e ilustración digital para lograr una representación realista. Los resultados de la investigación sugieren que el cráneo corresponde a una mujer adulta con una MCI fronto-occipital. Los indicadores morfológicos permitieron reconstruir un rostro rectangular con pómulos prominentes, nariz ancha y barbilla sutilmente hendida. La ubicación de los ojos siguió los parámetros anatómicos; la proyección de los labios reflejó el prognatismo maxilar, lo que se tradujo en labios más gruesos. La posición de las orejas se ajustó a los estándares craneofaciales y los valores de pigmentación y color del cabello se basaron en estudios genéticos de poblaciones nativas americanas recientes. El modelo final se renderizó con iluminación controlada para lograr una apariencia similar a la de un retrato, equilibrando la fidelidad anatómica con el realismo visual. A pesar de las limitaciones metodológicas de las aproximaciones faciales, los resultados obtenidos amplían la comprensión de las identidades de los pueblos precolombinos del Caribe, de su historia humana y de la evolución cultural en las Américas. Este proyecto trasciende el propósito de dar un rostro a un individuo precolombino: abre una ventana para ampliar el valor de las colecciones bioarqueológicas de los museos tanto para el público en general como para quienes investigan en este campo. En última instancia, el objetivo es contribuir a los crecientes esfuerzos por descolonizar las narrativas de los museos, representando de manera ética un rostro de las antiguas poblaciones del Caribe
2017. Centro Cultural Comunitario de Teotitlán del Valle, Oaxaca, México
No full textThis Community Cultural Center exhibits the archeological and textile wealth of Teotitlán del Valle, a village in the Mexican state of Oaxaca. The principal volume, facing the village square, houses the Museum which will host the collections and activities of the present Teotitlán Museum of History. In formal terms, the project is governed by the aesthetics of the immediate context, which determine the height, color, and materials used. The secondary volume contains the Municipal Library and a service zone. The area occupied by both buildings on the site represents just 18% of the whole surface area, leaving a large public space of plaza and gardens. This helps to improve the pedestrian routes passing across the site and connecting with the main square, inserting the new public spaces created by the Cultural Center into the circuit of existing plazas that define the urban structure of the village.Este Centro Cultural Comunitarios exhibe las riquezas arqueológicas y textiles de Teotitlán del Valle, un pequeño pueblo en el Estado de Oaxaca. El Volumen principal situado junto a la plaza del pueblo, alberga el Museo donde se trasladarán las colecciones y actividades del actual Museo Histórico de Teotitlán. Formalmente el proyecto se rige por la estética del entorno, que determina los parámetros de altura, color y materialidad. El volumen secundario contiene la Biblioteca Municipal y una zona de servicios. El área que ocupan ambos edificios en el predio, representa solo el 18% del total de la superficie, dejando un gran espacio público de plaza y jardines. De esta manera se mejoran los recorridos peatonales que pasan por el sitio y conectan con la Plaza principal, logrando insertar los nuevos espacios públicos generados por el Centro Cultural, en el circuito de plazas existentes que defina la estructura urbana del pueblo
Media manipulation detection: Challenges and perspectives
Get PDFThe article deals with the issue of mass media manipulation and presents a prototype of an innovative browser extension specifically designed to identify biases and manipulative techniques across various dimensions, including lexical, syntactic, and pragmatic levels. This tool is designed not only to detect subtle forms of manipulation embedded within media narratives but also to empower users with an insightful understanding of these tactics. The primary objective of this program is to inform users regarding the potential threats linked with consuming media content, such as news articles or analytical political materials. By meticulously scrutinizing the language employed in these texts, the extension aims to uncover the underlying agendas that may distort public perception. The strategy involves the incorporation of an optimal combination of features, such as detection of emotionally charged vocabulary, biased framing, unsourced claims, ambiguities, and more. The article analyzes both the advantages and the drawbacks of the current approach and provides suggestions for further improvement of the future program
Sistemas de representación urbana en el Renacimiento: contexto e innovaciones en los modelos urbanos de Leonardo Da Vinci
Get PDFDuring the late Middle Ages and the early years of the Renaissance, the ways of representing cities in treatises and manuscripts evolved considerably. This change responded to the need to conceive urban design from a more planned perspective, based on increasingly elaborate technical models. Although perspective and orthogonal projection were already in use earlier, they were reinterpreted in the Renaissance with a more refined character. Some artists combined both approaches and used chromatic variations to reinforce altimetric and structural aspects of urban spaces. Leonardo da Vinci was an essential figure in this renovation. His codices and manuscripts reflect these innovations, which are studied here from the perspective of their contribution to urban representation, a field usually relegated to the background.Durante el tramo final de la Edad Media y los primeros años del Renacimiento, los modos de representar las ciudades en tratados y manuscritos evolucionaron notablemente. Este cambio respondió a la necesidad de concebir el diseño urbano desde una perspectiva más planificada, sustentada en modelos técnicos cada vez más elaborados. Aunque la perspectiva y la proyección ortogonal ya se utilizaban anteriormente, en el Renacimiento fueron reinterpretadas con un carácter más refinado. Algunos artistas combinaron ambos enfoques y utilizaron variaciones cromáticas para reforzar aspectos altimétricos y estructurales de los espacios urbanos. Leonardo da Vinci fue una figura esencial en esta renovación. Sus códices y manuscritos recogen estas innovaciones, que se estudian aquí desde la perspectiva de su aportación a la representación urbana, un campo habitualmente relegado a un segundo plano
Le jardin où fleurissent les nombres. Une œuvre plastique inspirée par l’étude des propriétés combinatoires du Modulor:
No full textIn Le Modulor (1950) and Modulor 2 (1953), Le Corbusier expresses his firm conviction regarding the significance of his invention, describing it as a miraculous and singular discovery, yet acknowledging that it remains incomplete and open to further refinement by others. On several occasions, he invites readers to “play with the Modulor” and to exchange ideas aimed at improving the system, both in its abstract mathematical dimension and in its practical applications. He claims to have developed a sufficiently advanced prototype of an effective instrument, whose ultimate completion would depend on those willing and able to advance it further. During the 1950s and 1960s, several architects adopted the Modulor system, expanding the scope of its utilitarian application. By contrast, few studies have explored its abstract mathematical dimension—among the most notable exceptions are Johan Linton’s “Le Corbusier et l’esprit mathématique” (2004) and Rafael de Cáceres’s “La crisis del Modulor, desde el Modulor” (2004), both of which stand out for their distinctive contributions. This study examines the combinatorial limits of the Modulor system and applies its findings to the creation of artistic works in both two and three dimensions.En las páginas de El Modulor (1950) y Modulor 2 (1953) Le Corbusier manifiesta estar convencido de la importancia de su invento. Lo considera un hallazgo milagroso y único, aunque piensa que no está completamente terminado y que otros podrán hacer aportes para su perfeccionamiento. En repetidas ocasiones invita al lector a “jugar al Modulor” e intercambiar ideas con el fin de introducir mejoras, tanto en el plano abstracto matemático como en el práctico. Afirma haber elaborado la maqueta suficiente de un instrumento eficaz, cuya terminación quedaría en manos de quienes quisieran y pudieran desarrollarlo. Durante las décadas de 1950 y 1960 varios arquitectos se sumaron a la utilización del sistema, ampliando el campo de las exploraciones en el ámbito utilitario. En contraste, han sido escasas las investigaciones efectuadas en el campo abstracto matemático, destacándose en su singularidad las expuestas por Johan Linton en el ensayo Le Corbusier et l’esprit mathématique (2004) y por Rafael de Cáceres en La crisis del Modulor, desde el Modulor (2004). En este artículo se analizan los denominados “juegos de paneles” publicados en El Modulor, se examinan los límites combinatorios del sistema y, finalmente, se presenta una serie de objetos artísticos desarrollados a partir del descubrimiento de sus propiedades combinatorias.Dans Le Modulor (1950) et Modulor 2 (1953), Le Corbusier exprime sa conviction profonde quant à l’importance de son invention. Il la considère comme une découverte miraculeuse et unique, tout en reconnaissant qu’elle demeure inachevée et ouverte à des perfectionnements ultérieurs. À plusieurs reprises, il invite le lecteur à « jouer au Modulor » et à échanger des idées afin d’en améliorer à la fois la dimension mathématique abstraite et les applications pratiques. Il affirme avoir conçu le prototype suffisamment abouti d’un instrument efficace, dont l’achèvement dépendrait de ceux qui souhaiteraient et sauraient en poursuivre le développement. Au cours des années 1950 et 1960, plusieurs architectes ont adopté le système Modulor, élargissant le champ de ses explorations utilitaires. En revanche, peu de recherches se sont attachées à son aspect mathématique abstrait ; parmi les rares exceptions, se distinguent par leur singularité les travaux de Johan Linton (“Le Corbusier et l’esprit mathématique”, 2004) et de Rafael de Cáceres (“La crise du Modulor, depuis le Modulor”, 2004). La présente étude explore les limites combinatoires du système Modulor et met à profit les résultats obtenus pour la création d’oeuvres plastiques en deux et trois dimensions