Poli[Papers] (Universitat Politècnica de València)
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Basic constructions of topological n-ary polygroups
Get PDFIn this paper, we begin the study of topological n-ary polygroups. We begin by stating some properties of topological n-ary polygroups and introducing quotient n-ary polygroups. We consider topological isomorphism and prove some topological isomorphism theorems. Moreover, We define the concept of cp-resolvable topological polygroups and investigate a few properties of them
L-Fuzzy rough point-wise proximity spaces
Get PDFIn this paper, we study the concept of nearness between L-fuzzy rough sets and L-fuzzy points. The nearness between two L-fuzzy rough sets are viewed in terms of this new concept. Also, we investigate the relationship of L-fuzzy rough point-wise proximity space with L-fuzzy rough grills, L-fuzzy rough δℛ -clan and L-fuzzy rough δℛ-clusters. Moreover, we introduce the L-fuzzy rough point-wise LO-proximity spaces and study a few of its fundamental properties. The research is supported by a sufficient number of examples
Performar la ciudad: cuerpo y paisaje entrópico de un laboratorio en perspectiva de acción disruptiva
Get PDFThis article brings together poetics in artistic practices whose performative condition is to show the evolutions of the body in urban landscapes with degrees of entropy, allowing cohesive audiovisuals in pure instrumental management. It is proposed to articulate a process that is validated in the conformation of an expressive body by re-signifying the city in a disruptive key through three concomitant angles (body, city and audiovisual), which allows us to identify poetics of doing in experimentations, models of action and breakdown of the image to create ‘urban micro-narratives’ in the framework of Performing the city: a laboratory of art and creation in dialogue with Rudolf Laban, Land Art with Robert Smithson, improvisation with Steve Paxton in the United States and Carmen Werner in dance theatre in Spain. Likewise, creators such as Manuel Álvarez Diestro and Vincent Amiel who stand out for the dramaturgy of images, photography and the notion of ‘breakdown’ as an audiovisual technique, which makes them a reference in the aesthetic perspective of this laboratory.Este artículo reúne poéticas en prácticas artísticas que tienen como condición performativa mostrar las evoluciones del cuerpo en paisajes urbanos con grados de entropía, permitiendo audiovisuales cohesionados en la pura gestión instrumental. Se propone articular un proceso que se valida en la conformación de un cuerpo expresivo al resignificar la ciudad en clave disruptiva a través de tres ángulos concomitantes (cuerpo, ciudad y audiovisual), lo que permite identificar poéticas del hacer en experimentaciones, modelos de acción y desglose de la imagen para crear “microrrelatos urbanos” en el marco de Performar la ciudad: un laboratorio de arte y creación en diálogo con Rudolf Laban, el Land Art en Robert Smithson, la improvisación en Steve Paxton en Estados Unidos y Carmen Werner en la danza teatro de España. Asimismo, creadores como Manuel Álvarez Diestro y Vincent Amiel que destacan por la dramaturgia de imágenes, la fotografía y la noción de “desglose” como técnica audiovisual, lo que los hace referencia en la perspectiva estética de este laboratorio
A generalization of m-topology and U-topology on rings of measurable functions
Get PDFIn this paper, we generalize mμ and Uμ topologies on M ( X , A ) via an ideal I in the ring M ( X , A ) of all real-valued measurable functions. The collection LI∞ ( μ ) of all essentially I-bounded functions over the measure space (X,A,μ)$ and the ideal Iμ (X,A) ={ f ∈ M (X,A) : for every g ∈ M(X,A), fg is essentially I-bounded } are the components of 0 in the space mμI and UμI respectively. Additionally, we obtain a chain of necessary and sufficient conditions as to when these two topologies coincide. In particular, it is proved that they coincide if and only if the three sets M(X,A), LI∞ ( μ ) , and Iμ (X,A) coincide and this holds when and only when M(X,A), with either topology, is connected, which is further equivalent to each of these two topological spaces being a topological ring as well as a topological vector space. Furthermore, LI∞ ( μ ) is a complete pseudonormed linear space regardless of the choice of I. Finally, we examine when these later spaces are separable
Diseño de sistema de excitación con un agente inteligente ART en línea para operar en un sistema de potencia multi-máquina
No full textThe excitation system of the synchronous generator has the main function of terminal voltage regulation, and when necessary a power stabilizer (PSS) is added to damp low frequency oscillations (LFO). PSS tuning is performed at an operating point when low-frequency electromechanical oscillations occur. In this paper, an online trained adaptive control using an intelligent agent based on Adaptive Resonance Theory (ART) is presented to improve the performance of the excitation system in voltage regulation and, additionally, damp the interplant oscillations of the power system, and likewise, increase the transfer limit on the interconnection line of the power system at the same time. The new excitation system is tested on a two area system with interarea and plant oscillations, compared to a conventional IEEE ST1 A excitation system. The developed system shows that it is not necessary to add an ESP to the proposed control to damp the LFO satisfactorily.El sistema de excitación (SE) del generador síncrono tiene como función principal la regulación de voltaje terminal, y cuando es necesario se adiciona un estabilizador de potencia (ESP), para amortiguar oscilaciones de baja frecuencia (OSBF). La sintonización del ESP se realiza en un punto de operación cuando aparecen oscilaciones electromecánicas de baja frecuencia. En este trabajo se presenta un control adaptable entrenado en línea usando un agente inteligente basado en la teoría de resonancia adaptable para mejorar el desempeño del sistema de excitación en la regulación de voltaje y, adicionalmente, amortiguar las oscilaciones interplanta del sistema de potencia, e igualmente, aumentar el límite de transferencia en la línea de interconexión del sistema de potencia al mismo tiempo. El nuevo sistema de excitación se prueba en un sistema de dos áreas que presenta oscilaciones interárea e interplanta, comparándose con un sistema de excitación convencional IEEE ST1 A. El sistema desarrollado muestra que no esnecesario adicionar un ESP al control propuesto para amortiguar las OSBF satisfactoriamente
A corpus-based study of examples and example markers in the speech and writing of Spanish EFL students
Get PDFThe use of examples is a crucial aspect of human communication. However, they have attracted relatively little attention in the literature. With the aim of filling this gap, the current paper explores the use of examples and example markers (EMs) by Spanish EFL students, drawing on data from the Santiago University Learner of English Corpus (SULEC). The analysis considers both semi-fixed formulas and fully grammaticalized EMs. Results indicate a limited use of these expressions, with learners predominantly relying on fully grammaticalized EMs. The use of grammaticalized EMs reveals notable patterns, with the most common forms found in the corpus – for example and like – being prevalent across proficiency levels, although advanced learners exhibit a wider set of such markers. Moreover, women EFL learners seem to use EMs more frequently than men. The analysis also uncovers disparities between written and spoken language, with a greater presence of EMs in the written medium. Further investigation into the types of sequences in which the EMs for example and for instance appear reveals distinct patterns: argumentation predominates in written texts, while selection is more common in spoken discourse
Pino Casarini y la escena "anfiteatral" para la Arena de Verona
Get PDFThis text presents the work of Pino Casarini in the Arena of Verona. His work, over forty years of activity, leads to numerous achievements remaining in its essence linked to a single concept of installation defined as “amphitheater scenery.” It is a vision that accepts and exalts the formal qualities of the monument that hosts the lyrical shows, surpassing the previous proposals linked to a type of traditional installation that intended to modify the available stage space. Over time, Casarini’s scenography evolves from an understanding of both the problems of operatic representation and the particularities of the arenian scene. The article identifies the architectural operations of the painter’s various projects and presents, also considering his own theoretical production, the connections with a contemporary cultural context marked by artistic avant-garde and theatrical revolution.Este texto presenta la obra escenográfica de Pino Casarini en la Arena de Verona. Su trabajo, a lo largo de cuarenta años de actividad, desemboca en numerosas realizaciones permaneciendo en su esencia ligado a un único concepto de instalación que define como “escenografía anfiteatral”. Se trata de una visión que acepta y exalta las cualidades formales del monumento que alberga los espectáculos líricos, superando las propuestas anteriores vinculadas a un tipo de instalación tradicional que pretendía modificar el espacio escénico disponible. A lo largo del tiempo, la escenografía de Casarini evoluciona a partir de la comprensión tanto de los problemas de la representación operística como de las particularidades del escenario areniano. El artículo detecta las operaciones arquitectónicas de los diversos proyectos del pintor y presenta, considerando también su propia producción teórica, las conexiones con un contexto cultural contemporáneo marcado por la vanguardia artística y la revolución teatral
conversando con... Steven Holl
No full textWithin the landscape of contemporary architecture, the figure of Steven Holl stands out as one of the most influential and coherent voices in a practice that bridges design thinking with a deeply phenomenological and conceptual approach. His work, widely recognized internationally, is distinguished not only by its spatial and tectonic qualities, but also by the central role that hand drawing plays as an epistemological tool and a generator of form. For Holl, the act of drawing is not merely a representational phase within the architectural process, but an autonomous mode of thought that precedes, constructs, and gives shape to the architectural idea from its inception.
Contrary to methodologies that prioritize digital production as a point of departure, Holl’s process is rooted in visual intuition and plastic exploration through watercolors, sketches, and hand-drawn diagrams. This graphic corpus—prolific, deliberate, and resolutely analog—is not produced for display but emerges from a logic of invention. His daily drawings, rendered in small notebooks, operate as cognitive frameworks through which an architecture emerges that is in profound dialogue with light, place, material, and sensory perception.
Steven Holl’s graphic thinking has given rise to an architectural output that resists typological or formal repetition, instead favoring project-specific responses that are intimately tied to physical, cultural, and atmospheric conditions. Landmark works such as the Kiasma Museum in Helsinki (1998), the Chapel of St. Ignatius in Seattle (1997), or the Institute for Contemporary Art in Richmond (2018), exemplify a persistent concern with creating complex spatial systems that originate in initial conceptual sketches, often situated within the realm of pictorial abstraction.
In his professional practice, drawing is not only foundational but also functions as a form of critical resistance to the visual and methodological homogenization imposed by today’s digital culture. In this regard, his approach aligns with a disciplinary tradition that regards architectural drawing as an instrument of knowledge, a medium of experimentation, and a conceptual language, capable of operating between the technical and the poetic, the concrete and the speculative.
In the present interview, Steven Holl reflects on the role of drawing within his design process, discussing its function not only as a tool for architectural production but as a form of architectural thought in its own right. He also examines the connections between graphic representation, spatial experience, and material construction, offering a critical perspective on the tools and methods that define the discipline today. At a time when architecture faces profound technological and cultural transformations, Holl’s work reminds us of the enduring relevance of drawing as a creative matrix and as fertile ground for exploring new ways of inhabiting space.En el panorama de la arquitectura contemporánea, la figura de Steven Holl destaca como una de las voces más influyentes y coherentes de una práctica que conecta el pensamiento del diseño arquitectónico con un enfoque profundamente fenomenológico y conceptual. Su obra, ampliamente reconocida internacionalmente, se distingue no solo por sus cualidades espaciales y tectónicas, sino también por el papel central que desempeña el dibujo a mano como herramienta epistemológica y generador de forma. Para Holl, el acto de dibujar no es simplemente una fase representativa dentro del proceso arquitectónico, sino un modo de pensamiento autónomo que precede, construye y da forma a la idea arquitectónica desde su concepción.
A diferencia de las metodologías que priorizan la producción digital como punto de partida, el proceso de Holl se basa en la intuición visual y la exploración plástica mediante acuarelas, bocetos y diagramas dibujados a mano. Este corpus gráfico —prolífico, deliberado y decididamente analógico— no está concebido para su exhibición, sino que surge de una lógica de invención. Sus dibujos diarios, plasmados en pequeños cuadernos, funcionan como marcos cognitivos a través de los cuales emerge una arquitectura en profundo diálogo con la luz, el lugar, la materia y la percepción sensorial.
El pensamiento gráfico de Steven Holl ha dado lugar a una producción arquitectónica que se resiste a la repetición tipológica o formal, favoreciendo, en cambio, respuestas específicas para cada proyecto, estrechamente vinculadas a las condiciones físicas, culturales y atmosféricas. Obras emblemáticas como el Museo Kiasma de Helsinki (1998), la Capilla de San Ignacio de Seattle (1997) o el Instituto de Arte Contemporáneo de Richmond (2018) ejemplifican una preocupación persistente por crear sistemas espaciales complejos que se originan en bocetos conceptuales iniciales, a menudo situados en el ámbito de la abstracción pictórica.
En su práctica profesional, el dibujo no solo es fundamental, sino que también funciona como una forma de resistencia crítica a la homogeneización visual y metodológica impuesta por la cultura digital actual. En este sentido, su enfoque se alinea con una tradición disciplinaria que considera al dibujo arquitectónico como un instrumento de conocimiento, un medio de experimentación y un lenguaje conceptual, capaz de operar entre lo técnico y lo poético, lo concreto y lo especulativo.
En esta entrevista, Steven Holl reflexiona sobre el papel del dibujo en su proceso de diseño, analizando su función no solo como herramienta para la producción arquitectónica, sino como una forma de pensamiento arquitectónico en sí misma. También examina las conexiones entre la representación gráfica, la experiencia espacial y la construcción material, ofreciendo una perspectiva crítica sobre las herramientas y métodos que definen la disciplina actual. En un momento en que la arquitectura se enfrenta a profundas transformaciones tecnológicas y culturales, la obra de Holl nos recuerda la perdurable relevancia del dibujo como matriz creativa y terreno fértil para explorar nuevas formas de habitar el espacio
Transforming sustainable and green supply chains with artificial intelligence: A strategic review and future research opportunities
Get PDFSupply chain management (SCM) using artificial intelligence (AI) transforms business practices by encouraging sustainability. Gaining insight into AI's role in improving supply chain effectiveness and lowering environmental impact is essential as demand for sustainable practices rises. This study aims to investigate how AI contributes to sustainability in SCM and determine the primary challenges and opportunities associated with implementing AI. The study aims to provide an extensive review of AI's potential to assist sustainable and green supply chain practices. This standard and strategic literature review was conducted employing the Scopus database. The five-stage methodology was adopted in the review process, which includes pilot search, locating studies, study selection, synthesis analysis, and reporting. The choice of 82 relevant studies on AI and sustainable SCM was made during the review after the exclusion of irrelevant articles. The review emphasises AI's significant role in enhancing sustainability in SCM by reducing environmental impact, improving resource efficiency, and promoting green practices. However, the study also highlights the identification of challenges such as integration complexity, implementation cost, and technological limitations and future agenda
Orbitwise expansive points
Get PDFThis study defines an orbitwise expansive point (OE), such as x in a metric space (X,ρ), if there is a number d>0 such that the orbits of a few points inside an arbitrary open sphere will maintain a distance greater than d from the corresponding points of the orbit of x at least once. The point x is referred to as the relatively orbitwise expansive (ROE) point in the previously described scenario if d is replaced with the radius of the open sphere whose orbit is investigated and whose center is x. We also discuss OE (resp. ROE) set. We prove that arbitrary union of OE (resp. ROE) sets is again OE (resp. ROE) set and every limit point of an OE set is an OE point. We show that, rather than the other way around, Utz’s expansive map or Kato’s CW-expansive map implies sensitive (ROE) map. We utilise the concept of OE (resp. ROE) to analyse a time-varying dynamical system and investigate its relevance to certain traits associated with expansiveness