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La transition écologique dans les organisations de santé : retour d’expérience d’une formation-action à l’EHESP
No full textInternational audienc
Contrôler et responsabiliser les individus : l’Etat social à l’ère néolibérale
No full textInternational audienc
La pratique de l’image chez Casino. Voyage dans les archives de l’entreprise
No full textNational audienc
Augmentation and bulk edge correspondence for one dimensional aperiodic tight binding operators
No full textInternational audienceWe consider a particular class of 1D aperiodic models with the aim to understand how their internal degrees of freedom contribute to their topological invariants and the possible relations (correspondences) among them. In order to handle models with finite local complexity we introduce the principle of augmentation. This allows us to relate the values of the Integrated Density of States at gap energies for the bulk system to spectral flows. We consider two different augmentations. The first is based on the mapping torus construction. It leads to an alternative proof of the result that the gap labelling group of Bellissard coincides with that of Johnson-Moser. It furthermore allows for an interpretation of the spectral flow via boundary forces. The second augmentation applies to models obtained by the cut and project method where we find for 2-cut models two different spectral flows, one attached to the edge modes and related to the phason motion whereas the other is an augmented bulk invariant. Our approach is based on the well-established C * -algebraic approach to solid state physics and the description of topological invariants by K-theory and cyclic cocycles. We also present numerical simulations to illustrate our theorems
Roger Rocher, football business pioneer in France with the presidency of the Association Sportive de Saint-Étienne
No full textInternational audienc
Redécouvrir l’ouvrage <i>Un travail à soi</i>
No full textInternational audienceLe premier séminaire transversal du Centre Max Weber de l’année 2026 se tiendra le 09 janvier. Cette séance sera dédiée à la réédition du livre de Phillipe Bernoux Un travail à soi. Nous avons souhaité faire de ce séminaire un lieu de discussion autour des travaux de Philippe Bernoux et d’échanges avec celles et ceux qui n’ont pu participer à la réédition de l’ouvrage, mais qui pourront témoigner du travail engagé avec lui. - Michèle Dupré et Michel Lallemen
Dual-arm motion-compensated single-pixel imaging
No full textSingle-pixel imaging offers a cost-effective strategy for high-resolution imaging over a wide range of electromagnetic frequencies, but suffers from motion artifacts due to its sequential acquisition process. In this work, we propose a new framework for dynamic single-pixel imaging that is particularly suited for hyperspectral imaging. First, we introduce a hybrid dual-arm device combining a hyperspectral single-pixel camera and a conventional imaging arm, which allows accurate motion estimation during acquisition. We then reformulate the reconstruction problem by compensating for motion, thereby reducing the dynamic problem to a static reconstruction task over an extended field of view. Two different discretizations -warping either the illumination patterns or the image to be reconstructed are proposed, along with an in-depth analysis of their tradeoffs. Through extensive numerical simulations and real-world experiments, we demonstrate that warping the image rather than the patterns leads to superior reconstruction quality. In addition, extending the field of view beyond that of the single-pixel camera significantly mitigates model mismatch and improves image fidelity. The proposed method achieves low computational cost while maintaining theoretical rigor, providing a practical and robust solution for dynamic single-pixel imaging. Open-source implementations are provided to facilitate reproducibility and future research.</div
Vanité et conversion des arts dans la théologie de Bernard de Clairvaux
No full textInternational audienc
Spatial externalities in renewable resource management: Experimental evidence on fragmented property rights
No full textWe study how spatial connectivity and fragmented ownership affect the management of mobile common-pool resources. We develop a dynamic two-patch model of a mobile renewable resource: it predicts that (i) management efficiency in a given patch declines when the neighboring patch is managed by multiple agents rather than a single owner, and (ii) greater resource mobility amplifies inefficiencies at the global scale, especially under mixed ownership. We test these predictions in a preregistered laboratory experiment with 294 participants by varying mobility rates and ownership structures. Consistent with theory, shared management in one patch reduces efficiency at the local scale (in the adjacent patch) through spillover effects, and higher resource mobility further erodes efficiency at the global scale. Using group extraction trajectories, we identify three robust behavioral patterns: early over-extractors, mid-period preemptive groups, and late preservers. Mixed ownership and higher mobility shift the distribution toward early over-extraction and away from late conservation. Beyond these institutional and ecological effects, cognitive ability is strongly associated with more forward-looking extraction paths and higher payoffs