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Non-linear heat-transport equation beyond the Fourier law: The influence of non-linear effects in steady states
No full textIn the framework of Extended Irreversible Thermodynamics and in agreement with the second law of thermodynamics, in this paper we derive a heat-transport equation which generalizes the classical Fourier law and contains non-local and non-linear contributions related to the heat flux. In order to delve mainly into the possible influence of the non-linear effects on the heat transfer at nanoscale, only meant as the direct consequence of the non-linear terms appearing in the heat-transport equation, we focus on the longitudinal propagation of heat flux in a thin layer in steady states. The analysis is performed by also employing enhanced boundary conditions which allow to account for the phonon-boundary scattering. A comparison with the results arising from another non-local and non-linear proposal of heat-transport equation is performed as well
Il potenziale riconoscimento da parte dell’Unione europea di un diritto individuale all’energia efficiente e pulita nel nuovo assetto definito dal Green Deal
No full textAlla luce delle innovazioni apportate dal Green Deal europeo, prima, e dal piano RePowerEU, poi, il rinvigorimento della figura del consumatore suggerisce che l’individuo abbia maturato una nuova serie di diritti rinvenibili al punto di intersezione dei propri (preesistenti) diritti economici e “ambientali”. In altre parole, lo sviluppo legislativo occorso negli ultimi anni in materia di efficientamento energetico e promozione delle energie rinnovabili potrebbe aver comportato la venuta ad esistenza di un diritto individuale all’energia efficiente e pulita, da inquadrarsi eventualmente nel diritto primario o secondario. Pertanto, il contributo mira ad investigare le tracce dell’esistenza di tale nuova situazione giuridica soggettiva all’interno dell’ordinamento dell’Unione europea. Ciò diviene possibile attraverso un’analisi degli atti parte dei due piani energetici prospettati, oltre che della pertinente giurisprudenza di settore. Segnatamente, oltre a tentare di circoscriverne il contenuto pratico, il contributo intende comprendere se si tratti di un nuovo diritto a sé stante e non già una mera estensione di diritti già esistenti e riconosciuti magari nella Carta dei diritti fondamentali dell’Unione europea. Inoltre, l’elaborato investe l’aspetto della giustiziabilità di tale potenziale diritto dinanzi i giudici statali, considerando che in alcune circostanze le sue manifestazioni sono riconducibili ad atti prima facie non direttamente applicabili né direttamente efficaci, seppur dotati di un certo grado di dettaglio
La forma del derecho: de la institución a la textualidad
No full textForm, understood primarily as corporeality, but also as the mode of being of a thought or expression, provides an opportunity to consider a material study of law. Behind ideas such as text and fiction, this monograph offers an alternative reading of the history of legal thought. On the ideas of Pierre Legendre, we will attempt to open up reflection on the possibilities of fiction, its presence in legal discourse, and the institution as a linguistic construct and as a possibility of law. Therefore, it will be useful to move beyond the material dimension of law, beyond the form understood by legal formalists and positivists, which is limited to the possible ways in which law validly takes shape and prevails. Finally, we will propose an intellectual path through the textuality of law and its history of historical, literary, and linguistic modulations.La forma vista, ante todo, como la corporeidad, pero también como el modo de ser de un pensamiento o de una expresión, es una oportunidad para plantearnos un estudio material del derecho. Detrás de ideas como texto y ficción, esta monografía ofrece una lectura alternativa de la historia del pensamiento jurídico. Con apoyo en los planteamientos de Pierre Legendre, intentaremos abrir la reflexión a las posibilidades de la ficción, su presencia en el discurso jurídico y a la institución como montaje lingüístico y como posibilidad del derecho. Para ello, será útil transitar a través de la dimensión material del derecho, más allá de la forma entendida por los formalistas y positivistas jurídicos que se agotan solo en los modos posibles en que el derecho válidamente toma cuerpo e impera. En definitiva, propondremos un recorrido intelectual por la textualidad del derecho y su historial de mo-dulaciones históricas, literarias y lingüísticas
PIF-MN: a framework for investigating perturbations and their effects in multilayer networks
No full textTeaching Software Engineering for Artificial Intelligence: An Experience Report
No full textAs Artificial Intelligence (AI) becomes integral to modern software systems, the software engineering (SE) research community has been actively developing methods, tools, and frameworks to address software quality assurance of AI-enabled systems across critical dimensions such as robustness, ethics, security, and sustainability. These contributions are designed to tackle the complexity of AI systems, such as their probabilistic nature, data dependencies, and societal impact, ensuring they meet the standards of modern software engineering. These advances have, in turn, inspired educators to introduce Software Engineering for Artificial Intelligence (SE4AI) courses aimed at preparing the next generation of software engineers, with notable success examples already reported in the literature. In this experience report, we contribute to the field of SE4AI education by sharing lessons learned in designing and teaching a course that addresses the unique characteristics of AI-enabled systems. Drawing on insights gathered over four iterations of the course, we discuss how students perceive and apply key software engineering concepts, the challenges they encounter with tools and techniques, and how project-based learning bridges the gap between theoretical knowledge and real-world application. Furthermore, we address the broader educational challenges, such as interdisciplinary barriers and the integration of rapidly evolving AI technologies, and provide recommendations to enhance SE4AI education. By reflecting on these experiences, we aim to offer insights and strategies for improving the teaching of SE4AI topics
Innovative porous sulfonated poly(2,6-dimethyl-1,4-phenylene)oxide nanoporous crystalline films: A novel adsorbent to remove cationic dyes from wastewater
No full textSulfonated Poly(phenylene oxide) (sPPO) films with both macroporous hydrophilic sulfonated amorphous phase and hydrophobic nanoporous crystalline (NC) α phase were prepared by solid-state sulfonation and widely characterized. These semicrystalline porous sPPO films exhibiting both macro and microporosity were tested as a novel adsorbent for the adsorption of one of the most common cationic dye, the crystal violet (CV), from wastewater. Nanoporous crystalline sulfonated PPO (NC-sPPO) films evidenced a removal of CV definitively higher, close to 99 %, than the amorphous sulfonated film (R=25 %) and the NC un-sulfonated film (R=10 %). The adsorption kinetic was well explained through a second order model and, according to Langmuir model, a qm = 141 mg/g was obtained. The selective removal of NC sPPO films toward a cationic dyes mixture, made of CV, methylene blue (MB) and rhodamine B (RhB) molecules was also performed, showing an almost complete removal of all components of the mixture in a few hours. Reusability of NC sPPO films was also studied, obtaining a removal efficiency of 97 % after four cycles of film regeneration
Partial Cubes and Fibonacci Dimension: Insights and Perspectives
No full textA partial cube is a graph G that can be isometrically embedded into a hypercube Qk, with the minimum of such k called the isometric dimension, idim(G), of G. A Fibonacci cubeΓk excludes strings containing 11 from the vertices. Any partial cube G embeds into some Γd, defining Fibonacci dimension, fdim(G), as the minimum of such d. It holds idim(G)≤fdim(G)≤2·idim(G)-1. While idim(G) is computable in polynomial time, check whether idim(G)=fdim(G) is NP-complete. We survey the properties of partial cubes and Generalized Fibonacci Cubes and present a new family of graphs G for which idim(G)=fdim(G). We conclude with some open problems
Transparentes. Semasiología de los silencios fototextuales del exilio colombiano
No full textEl objetivo de este artículo es escudriñar, desentrañar y problematizar el significado oculto, simbólico y emocional que se teje y se condensa detrás de los silencios léxicos y semánticos presentes en algunos foto textos de Transparentes. Historias del exilio colombiano, de Javier de Isusi (2020). Esta obra literaria, gráfica y testimonial – galardonada con el Premio Euskadi de Literatura 2021 – reúne, articula y resignifica los testimonios de protagonistas pertenecientes a diversas etnias, culturas, generaciones y grupos sociales, unificados por la experiencia compartida del desplazamiento forzado, la pérdida y la búsqueda de reconstrucción identitaria derivadas del prolongado conflicto armado colombiano. Recogidas por el equipo de la Comisión de la Verdad en los múltiples países donde estas personas buscaron amparo, reconstruyeron vínculos y redefinieron su memoria, las voces y las vidas de dichos testimonios se entrecruzan, dialogan y confluyen en foto textos híbridos, cargados de densidad narrativa, potencia visual y espesor simbólico, donde las imágenes y las palabras se complementan, se tensan y se reescriben mutuamente. No obstante, en medio de esa abundancia expresiva emerge la presencia inquietante de los silencios, pausas intencionadas que revelan tanto como ocultan. De ahí la necesidad de interpretar y poner en evidencia la semasiología latente y la carga afectiva que se encubre tras la ausencia de la palabra enunciada. Estas omisiones léxicas y retóricas, lejos de representar simples vacíos discursivos, constituyen espacios de resistencia, zonas de resguardo y estrategias de protección del trauma, que permiten al autor erigir un universo de sentido prudente, respetuoso y éticamente comprometido. A través de esta contención expresiva, De Isusi ofrece un refugio simbólico y emocional a los protagonistas, sin desvirtuar su necesidad profunda de narrar el dolor, de dar forma a la pérdida y de reinscribir su experiencia en la memoria colectiva del exilio
Doing more with less: the role of institutional quality in enhancing energy efficiency in Italy’s “hard-to-abate” sectors
No full textThis paper investigates the role of institutional quality in enhancing energy efficiency within Italy’s “hard-to-abate” industrial sectors, which include cement and lime, glass and ceramics, metal, pulp and paper, and refineries. These sectors account for a significant share of global energy consumption and CO2 emissions and face unique challenges in decarbonization. Using a novel dataset from the EU Emissions Trading System (EU ETS), covering 329 Italian plants from 2013 to 2019, the study applies the Directional Distance Function (DDF) to measure energy efficiency and explores the impact of institutional quality on energy performance through Ordinary Least Squares (OLS) and Two-Stage Least Squares (2SLS) regression. The analysis
highlights greater energy efficiency among multi-plant firms, firms in the pulp and paper sector, and firms located in Central Italy. Regression results further show that institutional quality has a significant positive effect on energy efficiency, especially in competitive markets, among multi-plant and non-innovative firms, in Northern regions, and in the glass and ceramics and metal sectors. This paper contributes to the literature by underscoring the importance of institutional quality in driving energy efficiency in energy-intensive sectors and offers policy implications for promoting industrial decarbonization