Scientific Publications of the University of Toulouse II Le Mirail
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Modeling Trust Judgments in Educational Videos: An Exploratory Predictive Approach Integrating Navigation Behavior, Attitude, and Disposition to Critical Thinking
No full textThis study investigates how navigation behaviors, attitude, and critical thinking disposition predict trust attribution in educational videos among middle and high school students. Grounded in the hypothesis that epistemic judgments are shaped by a multidimensional interplay of cognitive, affective, and dispositional factors, we analyzed data collected from a video-based learning platform integrating selected videos and reflective questioning on controversial socio-scientific issues. Partial correlation analyses revealed significant associations between students’ interaction patterns with the videos (e.g., seeking, pausing), attitude, and critical thinking disposition. Notably, a positive attitude about video content was negatively associated with critical thinking disposition, suggesting that students’ positive perception about the topic may attenuate epistemic vigilance. Predictive modeling confirmed that including attitudinal and dispositional variables significantly improves the classification accuracy of normative trust judgments compared to models based on navigation traces alone. The Critical Thinking Disposition indicator (CTDI) proved to be a robust predictor of evaluative success
Équipes de prévention en contexte contraint : agentivité, affects et recompositions organisationnelles
No full textInternational audienceCette communication analyse les effets des réformes organisationnelles sur les collectifs de travail dans les organisations de prévention en santé. En s’appuyant sur le cas des structures de dépistage organisé des cancers, elle montre comment les injonctions institutionnelles et la standardisation des messages via la régionalisation reconfigurent les pratiques communicationnelles, tout en affectant l’agentivité des équipes. Les affects - souvent tus ou disqualifiés - sont envisagés comme des analyseurs des tensions organisationnelles, mais aussi comme des leviers de recomposition des marges de manœuvre et des formes d’engagement professionnel
Analysis of the steady solutions of the Fisher's infinitesimal model; a Hilbertian approach
No full textWe provide an asymptotic analysis of a nonlinear integro-differential equation which describes the evolutionary dynamics of a population which reproduces sexually and which is subject to selection and competition. The sexual reproduction is modeled via a nonlinear integral term, known as the Fisher's 'infinitesimal model'. We consider a small segregational variance regime, where a parameter in the infinitesimal model, which measures the deviation between the trait of the offspring and the mean parental trait, is small with respect to the selection variance. In this regime, we characterize the steady states of the problem and analyze their stability. Our method relies on a spectral analysis involving Hermite polynomials, highlighting the specific structure of the nonlinear reproduction term
Heide Goettner-Abendroth et la pseudo-science des « Recherches matriarcales modernes »
No full texthttps://tempspresents.com/2026/02/07/heide-goettner-abendroth-pseudo-science-recherches-matriarcales-modernes/Cet article propose une analyse critique des travaux de Heide Goettner-Abendroth, figure des « Recherches matriarcales modernes ». Il examine sa thèse centrale selon laquelle la domination masculine serait un phénomène tardif, apparu après le Néolithique, et aurait succédé à des sociétés matriarcales égalitaires. Les auteur·rices rappellent que HGA redéfinit le matriarcat comme un système fondé sur la matrilinéarité, le partage des ressources et des formes décisionnelles consensuelles, qu’elle distingue d’un simple patriarcat inversé. L’article souligne le caractère problématique de sa méthode : usage sélectif des sources ethnographiques et archéologiques, absence de véritable discussion contradictoire et faible inscription dans les cadres académiques. Il met en évidence des généralisations hâtives et des rapprochements fragiles entre mythologie, symbolique et organisation sociale. Les critiques portent aussi sur la tendance à disqualifier par principe les travaux ne confirmant pas l’hypothèse d’un âge d’or matriarcal. Cette posture conduit à substituer un récit idéologique à une démonstration fondée sur des données contrôlables. Le succès éditorial de ces ouvrages est interprété comme révélateur d’attentes contemporaines fortes autour de la question des origines du patriarcat
Generalized local jacobians and commutative group stacks
No full textIn [Pierre Colmez and Jean-Pierre Serre, editors. Correspondance Grothendieck-Serre, volume 2 of Documents Mathématiques (Paris) [Mathematical Documents (Paris)]. Société Mathématique de France, Paris, 2001, Page 109] Grothendieck sketches the construction of a complex J* (X) or commutative pro-algebraic groups, associated to a smooth variety X, and for which each J i (X) is a product of local factors called the local generalized jacobians. The purpose of this note is to recast this construction in the setting of higher algebraic group stacks for the fppf topology. For this, we introduce a notion of algebraic homology associated to a scheme which is a universal object computing fppf cohomology with coefficients in group schemes. We endow this algebraic homology with a filtration by dimension of supports, and prove that, when X is smooth, J * (X) appears as the E 1-page of the corresponding spectral sequence. In a final part we partially extends our constructions and results over arbitrary bases
Détection d'anomalies dans la télémesure satellite basée sur la fonction de Christoffel
No full textInternational audienc
Prendre en charge la douleur : une voie de légitimation pour les pratiques médicales de l'acupuncture en France ?
No full textInternational audienceThis brief article aims to recall the phases of the socio-historical process of introducing acupuncture into hospitals and its connection with a struggling pain medicine. After presenting briefly this socio-historical framework of acupuncture institutionalization (and not of Chinese medicine as a whole), we examine, through the trajectories of three acupuncturists currently addressing pain in hospitals, how personal trajectories and local opportunities lead to the introduction of these practices into hospitals. We thus demonstrate the opportunistic, limited, and constrained nature of this hospital exercise. This allows us to conclude that while pain holds a significant place in the institutionalization of acupuncture medical practices in French hospital settings, it is primarily addressed in private practices by professionals who may not always hold medical titles and who have a broader recourse to Chinese medical theory and its various methods, currently not recognized by French medical regulations.Ce court article vise à rappeler les phases du processus socio-historique d'introduction de l'acupuncture à l'hôpital et ses liens avec une médecine de la douleur qui peine à faire sa place. Après avoir présenté brièvement ce cadre socio-historique d'institutionnalisation de l'acupuncture (et non de la médecine chinoise dans son ensemble), nous examinons, à travers trois trajectoires d'acupunctrices intervenant de nos jours sur des douleurs à l'hôpital, comment des trajectoires personnelles et des opportunités locales mènent à l'introduction de ces pratiques à l'hôpital. Nous montrons ainsi le caractère opportuniste, limité et contraint de cet exercice hospitalier. Cela nous permet de conclure que si la question la douleur tient une place importante dans l'institutionnalisation des pratiques médicales de l'acupuncture dans les espaces hospitaliers français, elle est surtout traitée dans les cabinets privés, par des professionnels n'ayant pas toujours le titre de médecin et ayant un recours plus large à la théorie médicale chinoise et à ses différentes méthodes, actuellement non reconnues par la réglementation médicale française
La Fabrique des Jumeaux Numériques: verrous scientifiques, technologiques et perspectives du programme EDT
No full textNational audienceThe current transition from traditional physical systems to software-driven ecosystems is profoundly transforming engineering practices and increasing the demand for accessible and scalable technologies. Digital twins (DTs) are emerging as a foundational concept, enabling the separation of high-level decision-making from physical operations while maintaining a close connection to the real system. By combining deductive models from engineering and inductive models derived from data, they provide powerful capabilities for analysis, simulation, prediction, and optimization of systems. Despite this potential, their implementations often remain fragmented, domain-specific, and costly to deploy and maintain. This article synthesizes the scientific and technological challenges associated with digital twin engineering and outlines the objectives of the Engineering Digital Twins (EDT) program, which aims to establish a rigorous and reliable approach to their development, deployment, and operation.La transition des systèmes physiques traditionnels vers des écosystèmes pilotés par logiciel transforme profondément les pratiques d'ingénierie. Les jumeaux numériques (JN) émergent comme un concept structurant permettant de dissocier la prise de décision de haut niveau des opérations physiques tout en maintenant un lien étroit avec le système réel. En combinant des modèles déductifs issus de l'ingénierie et des modèles inductifs dérivés des données, ils offrent des capacités puissantes d'analyse, de simulation, de prédiction et d'optimisation des systèmes. Malgré ce potentiel, leurs implémentations restent souvent fragmentées, spécifiques à un domaine et coûteuses à déployer et à maintenir. Cet article propose une synthèse des verrous scientifiques et technologiques associés à l'ingénierie des jumeaux numériques et présente les objectifs du programme Engineering Digital Twins (EDT), qui vise une approche rigoureuse et fiable de leur développement, de leur déploiement et de leur exploitation
Modeling and analysis of integrated SiRC snubber circuit in SiC power modules
No full textInternational audienceWide bandgap (WBG) power semiconductors such as SiC and GaN devices allow for very fast switching speed, thus improving the overall efficiency and power density of power converters. Among the factors now limiting the switching speed, there is the parasitic inductance of the switching cell induced by power interconnections at packaging level, especially leadframe along with DBC layout and bonding wires. While important, optimizing power connexions reach some limits as long as the switching cell is closed with an external decoupling capacitor. A complementary approach is to integrate a RC snubber circuit directly inside the power module (PM) to shorten at most the switching cell inductive loop. This paper investigates the opportunity to integrate silicon monolithic RC snubber dies (SiRC), fully compatible with existing power modules assembly processes and operation. In this paper, several PM integrating different numbers of SiRC snubber are assembled and tested to assess the advantages on voltage overshoot and oscillations damping. A 3D modelling of the power module's inductive loop is also done to give comprehensive explanations of the remaining voltages overshoots and oscillations, and comment on the added value of such snubbers depending on the RC values.</div
Immersed Isogeometric LaTIn Method for the Efficient Simulation of Composite Microstructures with Multiple Nonlinear Interfaces
No full textInternational audienceComputational micromechanics, aimed at performing numerical simulations at the microscale, is of utmost importance, particularly in the current context of digital twins in the mechanics of materials. This talk presents the development of an immersed isogeometric LaTIn method designed for the efficient and accurate simulation of complex composite microstructures featuring multiple nonlinear interfaces. The first variant of the approach combines IsoGeometric Analysis, for its high accuracy, with an the immersed boundary-conformal strategy that eliminates complex meshing while maintaining conformal matrix/inclusion interfaces through the construction of conformal layers. Nonlinear behaviors are localized at these conformal interfaces and efficiently handled by the LaTIn algorithm, while the non-conformal coupling between subdomains remains in the linear elastic regime and is treated using Nitsche’s method. In the second version of the approach, the conformal layers are removed, offering increased flexibility but requiring additional stabilization of the immersed isogeometric LaTIn formulation. The efficiency and robustness of the framework are demonstrated through several nonlinear 2D benchmark cases, including unilateral contact, frictional contact, and delamination in composite microstructures