Scientific Publications of the University of Toulouse II Le Mirail
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Design Fiction in French Engineering Education: Imaging Futures for Waste Management
No full textInternational audienceIntegrating climate change education into engineering education is essential to prepare students for an uncertain and problematic future. The waste sector is a major consumer of natural resources and emitter of greenhouse gases, which is why it is a central theme in the training of engineering students. This paper presents the main takeaways from a pilot training module based on design fiction. The module aims to develop futures thinking in engineering students by helping them to imagine waste management in different climatic and technological contexts. An analysis of the futures images based on written output shows that the training module enables students to generate different technological schemes for waste recovery, which are conceived in their social and cultural context. Students nevertheless struggle to imagine futures that are radically different from lifestyles in a consumer society. Only output imagining a future of collapse explores ways of living that depart from our current lifestyles. Articulating the temporalities of technological and climatic processes and understanding low-tech approaches appear to be two opportunities for perfecting the module
The mediated and multimodal nature of song translation
No full textInternational audienceThe growing number of options available to musicians seeking to make their music available to an international audience has resulted in a rise in the availability of translated lyrics and subtitled clips online. This event will unpack questions surrounding the form of the translated lyrics sometimes proposed by the musicians' artistic team on YouTube and, where applicable, by the platform's automatic translation tool. These (often approximate) translations focus mainly, if not exclusively, on the meaning, resulting in a distinct separation of the content and the stylistic aspects of the lyrics. The artist's “voice” is thus confined to their audible, musical voice, which seems to imply a greater emphasis on vocal performance and less attention to details such as tone, imagery, and sonorities, as well as cultural references and slang
Mi-parcours de l'ANR Fistulae : progrès et perspectives sur Lyon, Vienne et Saint-Romain-en-Gal
No full texthttps://lefildarar.hypotheses.orgLe projet ANR Fistulae s’est donné pour objectif, entre 2023 et 2026, d’étudier les ressources, l’organisation et les acteurs du marché du plomb romain à partir des produits finis que sont les tuyaux en plomb, dans une approche pluridisciplinaire combinant histoire, archéologie, épigraphie et archéométrie. Ce billet a pour but de retracer l’avancement du projet ANR Fistulae à mi-parcours pour le secteur Lyon/Vienne
Fast control allocation algorithm for tilt-rotor VTOL aircraft
No full textControl algorithms initially developed for tilt-wing vertical take-off and landing (VTOL) aircraft are adapted to the tilt-rotor design. The main difference between the two types of planes is the more complicated interaction between propellers and wings in the tilt-rotor design. Unlike tilt-wing design, the tilt-rotor case varies the angle between the propeller disk and wing cord line, thus introducing a non-linear dependency of lift on thrust and tilt angle. In this paper we develop a precise control allocation method, utilizing Groebner basis algorithms to mask the non-linearity of the control action and allow the use of linear time-invariant control laws for attitude and velocity control architectures. The performance of our approach is discussed and quantified w.r.t. the accuracy of the developed propeller-wing interaction model
Famille(s) : espaces et pratiques.Représentations dans la littérature et le cinéma latino-américains du XXIème siècle
No full textInternational audienceEl modelo de familia nuclear heterosexual es todavía a día de hoy una institución fundamental de la sociedad hetero patriarcal y capitalista. No obs tante, se pueden encontrar críticas a dicho modelo desde hace siglos. El modelo heterosexual, como única vía posible, viene siendo aún más cuestionado en las últimas décadas, y se van sumando maneras cada vez más numerosas de «hacer familia»
Éprouver l'archive (post)coloniale en situation artistique
No full textInternational audienceCet ouvrage collectif propose une réflexion critique, historique et poïétique sur les modalités de ressaisie de l’archive (post)coloniale dans des situations artistiques pluridisciplinaires. Il réunit les contributions de chercheurs et de chercheuses en histoire, musique, arts plastiques, études cinématographiques et théâtrales ainsi que des entretiens avec des artistes.En s’intéressant à des territoires marqués par des contextes coloniaux différents, cet ensemble envisage la diversité des pratiques artistiques de remploi des archives selon trois axes : la transmission de la mémoire, la représentation de la violence et la réappropriation de l’histoire par le choix de la contre-narration. En Europe, en Afrique et aux Amériques, le passé colonial est constitutif des sociétés contemporaines. Qu’il s’agisse des conflits de territoires, des politiques migratoires, des initiatives publiques de reconnaissance et de réparation des préjudices subis, ou encore des controverses concernant l’archivage des histoires coloniales, la présente étude a pour visée d'activer de manière sensible des passés qui ne passent pas et qui sont bien présents
Polarization of lattices: Stable cold spots and spherical designs
No full text32 pagesWe consider the problem of finding the minimum of inhomogeneous Gaussian lattice sums: Given a lattice and a positive constant , the goal is to find the minimizers of over all . By a result of B\'etermin and Petrache from 2017 it is known that for steep potential energy functions - when tends to infinity - the minimizers in the limit are found at deep holes of the lattice. In this paper, we consider minimizers which already stabilize for all for some finite ; we call these minimizers stable cold spots. Generic lattices do not have stable cold spots. For several important lattices, like the root lattices, the Coxeter-Todd lattice, and the Barnes-Wall lattice, we show how to apply the linear programming bound for spherical designs to prove that the deep holes are stable cold spots. We also show, somewhat unexpectedly, that the Leech lattice does not have stable cold spots
LinA: A faster approach to piecewise linear approximations using corridors and its application to mixed-integer optimization
No full textInternational audienceIn this paper, we address the problem of approximating and over/under-estimating univariate functions with piecewise linear (PWL) functions with the minimum number of linear segments given a bound on the pointwise approximation error allowed. Through a new geometric approach and building on the work of Ngueveu [Ngu19], we develop new algorithms that can solve the problem in quasi-logarithmic time on a very broad class of error types. Such algorithms find many applications, mostly related to solving certain classes of (mixed-integer) nonlinear and nonconvex programming (MINLP) problems by mixed-integer linear programming (MILP) techniques. An efficient implementation of our algorithms is available as a Julia package. Benchmarks are also provided to showcase how our method outperforms the state-of-the-art for this problem. Finally, we show how our algorithms can be used to efficiently solve certain classes of MINLP problems by a case study on multicommodity network design problems with congestion
Fragmentations with erasure
No full text19 pages, 1 figureWe study sequences of partitions of the unit interval into subintervals, starting from the trivial partition, in which each partition is obtained from the one before by splitting its subintervals in two, according to a given rule, and then merging pairs of subintervals at the break points of the old partition. The th partition then comprises subintervals with break points, and the empirical distribution of these points reveals a surprisingly rich structure, even when the splitting rule is completely deterministic. We consider both deterministic and randomized splitting rules and study the limiting behavior of the empirical distribution of the break points, from multiple angles
La contribution des LLM à l'extraction de relations dans le domaine financier
No full textInternational audienceL'extraction de relations (RE) est une tâche clé en traitement du langage naturel, visant à identifier les relations sémantiques entre des entités dans un texte. Les méthodes traditionnelles supervisées entraînent des modèles pour annoter les entités et prédire leurs relations. Récemment, cette tâche a évolué vers un problème séquence-à-séquence, où les relations sont converties en chaînes cibles générées à partir du texte d'entrée. Les modèles de langage, de plus en plus utilisés dans ce domaine, ont permis des avancées notables avec divers niveaux de raffinement. L'objectif de l'étude présentée ici est d'évaluer l'apport des grands modèles de langue (LLM) dans la tâche d'extraction de relations dans un domaine spécifique (ici le domaine économique), par rapport à des modèles de langue plus petits. Pour ce faire, nous avons considéré comme baseline un modèle reposant sur l'architecture BERT et entraîné dans ce domaine, et quatre LLMs, à savoir FinGPT spécifique au domaine de la finance, et XLNet, ChatGLM2 et LLama3 qui sont généralistes. Tous ces modèles ont été évalués sur une même tâche d'extraction, avec, pour les LLM généralistes, des affinements par few-shot learning et fine-tuning. Les expériences ont montré que les meilleures performances en termes de F-score ont été obtenues avec des LLM affinés, Llama3 obtenant les meilleures performances