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Charte relative à l’audiodescription de peintures, broderies et tapisseries
No full textIl s'agit d'une charte énonçant les principes éthiques, les caractéristiques et la méthodologie de l'audiodescription du projet ANR Guide Muséal Inclusif
Unrolled Multiplicative Updates for Nonnegative Matrix Factorization applied to Hyperspectral Unmixing
No full textHyperSpectral Unmixing (HSU), the problem of separating mixed spectra of overlapping materials in a hyperspectral image, has motivated dedicated algorithmic developments in the last two decades. On the one hand, traditional model-based algorithms frequently guarantee interpretable results. On the other hand, deep-learning-based approaches are often faster at inference time and may obtain better empirical results. This work utilizes the strengths of both approaches by building on the deep unrolling paradigm. Our contribution is twofold. First, we propose two new algorithms based on deep unrolling of the well-known Multiplicative Updates. The first, coined Non-Adaptive Learned Multiplicative Updates (NALMU), adopts a simple element-wise multiplicative scheme. The second, called Recursive Adaptive Learned Multiplicative Updates (RALMU), has more flexible updates and better take into account the spatial correlations in the abundances. Second, we relate NALMU to the minimization of an explicit cost function under some assumptions. Such guarantees are unique in the HSU field. NALMU and RALMU are tested on astrophysics and remote sensing datasets. They outperform the other deep learning-based HSU algorithms and classical iterative schemes for the endmember estimates and obtain competitive results for the abundance estimates, even when trained in a self-supervised way. The code used in this paper will be made available upon publication
Santé environnementale et transition écologique du système de santé
No full textInternational audienceFace à l’urgence climatique et aux effets de l’environnement sur la santé, la transition écologique du système de santé est devenue un enjeu majeur. Cet ouvrage propose une synthèse structurée et opérationnelle des fondements de la santé environnementale et de leur application au champ sanitaire et médico-social.Il réunit les définitions essentielles des notions clés (santé environnementale, transition écologique, décarbonation des activités…), un état des lieux du cadre juridique, des politiques publiques et des connaissances actuelles (PNSE 4, feuille de route de planification écologique du système de santé), ainsi que des exemples concrets de démarches de transition mises en œuvre dans les établissements de santé et médico-sociaux.Une annexe méthodologique dédiée aux concours administratifs complète l’ouvrage, avec des conseils pratiques et des exemples de sujets.Initialement conçu pour les candidats aux concours d’entrée à l’EHESP, ce livre s’adresse également aux professionnels du système de santé souhaitant intégrer les enjeux environnementaux dans leurs pratiques, leurs décisions et leurs engagements, ainsi qu’à toutes celles et ceux désireux de concilier expertise sanitaire et responsabilité écologique
For the use of exterior form in daily physics, an introduction without coordinate frame
No full textThis is a short introduction of the exterior form formalism focus on its appli-cations in physics and then mostly aimed to physics students. If exterior formsare more than a century old they are unfortunately still seen (and teached) asa high level mathematics object and then little used outside theorical physics.We then focus here on simple examples which occure in daily phiysics. Thereexists already a lot of very good mathematical textbooks and courses on thesubject but the originality of these notes, the physical applications aside, is thatwe keep a completely geometrical approach. As a rule of a game played here wenever use a coordinate frame neither in the definitions nor in the proofs but onlyat the end in order to recover the classical physics equations
Enseigner la prononciation de l'anglais en 2025 : tensions entre les prescriptions institutionnelles, les réalités sociolinguistiques et les perceptions des futurs enseignants
No full textInternational audienc
Déploiement et Maillage de stations instrumentées en IoT sur le territoire pour diverses études_AG AnaEE 2026 "ECOLOGGING"
No full textInternational audienceIn this poster, we present the deployments of the different types of instrumented stations developed within the framework of the "ECOLOGGING” project, carried out during the year 2024/2025, as well as the main developments, the results obtained, and the conclusions. The “ECOLOGGING” stations are deployed according to the nature of the studies conducted and the associated specific scientific needs.Dans ce poster, nous présentons les déploiements des différents types de stations instrumentées développées dans le cadre du projet "ECOLOGGING", réalisés au cours de l’année 2024/2025, ainsi que les principales évolutions, les résultats obtenus et les conclusions. Les stations ECOLOGGING sont déployées en fonction de la nature des études menées et des besoins scientifiques spécifiques associés
GW/DT Invariants and 5D BPS Indices for Strips from Topological Recursion
No full textInternational audienceTopological string theory partition function gives rise to Gromov-Witten invariants, Donaldson-Thomas invariants and 5D BPS indices. Using the remodeling conjecture, which connects Topological Recursion with topological string theory for toric Calabi–Yau threefolds, we study a more direct connection for the subclass of strip geometries. In doing so, new developments in the theory of topological recursion are applied as its extension to Logarithmic Topological Recursion (Log-TR) and the universal -- duality. Through these techniques, our main result in this paper is a direct derivation of all free energies from topological recursion for general strip geometries. In analyzing the expression of free energy, we shed some light on the meaning and the influence of the -- duality in topological string theory and its interconnection to GW and DT invariants as well as the 5D BPS index
La justice sociale à l’horizon d’une morale sans Dieu : les mutations du sacré chez Ferdinand Buisson
No full textInternational audienceAccording to Ferdinand Buisson (1841-1932), the process of secularizing the school and then the State – of which he was a major player in both cases – had a meaning that was not limited to a separation of religion and politics. The point here is to argue that, as Buisson saw it, this dual process was part of a more ambitious perspective, that of a radical transformation of the sacred: from the religious to the political, from a dogmatic truth to an ideal of justice, from Christianity to socialism. Buisson's vision of the religious and sacred no longer takes the form of a superior divine power imposing itself on mankind, but rather as a drive by mankind itself towards its own moral fulfillment, which at the beginning of the 20th century presupposed a social, economic and political purpose, a purpose to which the secular educational institution could contribute.Selon Ferdinand Buisson (1841-1932), le processus de laïcisation de l’école puis celui de l’État – dont il est dans les deux cas un acteur majeur – recouvre une signification qui ne s’épuise pas dans une séparation du religieux et du politique. Il s’agira ici de soutenir que, tel que Buisson le conçoit, ce double processus s’inscrit dans une perspective plus ambitieuse, celle d’une mutation radicale du sacré : du religieux au politique, d’une vérité dogmatique à un idéal de justice, du christianisme au socialisme. Si le religieux et le sacré sont présents chez Buisson, ils ne se conçoivent plus sous l’espèce d’une puissance divine supérieure s’imposant à l’humanité mais comme un élan de l’humanité elle-même vers son propre accomplissement moral, lequel suppose selon lui une visée sociale, économique et politique, à la réalisation de laquelle l’institution scolaire laïque est susceptible de contribuer
Fine sediment production during urban development: the damage is done early!
No full textInternational audienc
Intragenerational conflict undermines cooperation with the future
No full textFuture generations have no agency in today's decisions, making their well-being a defining challenge of our time. Climate change, biodiversity loss, and resource depletion all depend on trade-offs between immediate gains and long-term sustainability. These dilemmas are often attributed to shortsightedness. We show instead that the critical obstacle lies within generations themselves: coordination failures among contemporaries can undermine sustainability even when individuals care about the future. Using a lab-in-the-field intergenerational goods game with a threshold-based regeneration rule, we compare settings with a single decision maker per generation to ones with three contemporaries deciding simultaneously without communication. When individuals act alone, resources are almost always preserved; when contemporaries must coordinate, conservation collapses. Our models explain this pattern by combining intergenerational altruism with beliefs about others' restraint: pessimistic expectations erode altruistic motives, driving overextraction. These insights have direct implications for climate governance and natural resource management, where failures in coordination today can be as detrimental as lack of concern for the future