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FlowEO: Generative Unsupervised Domain Adaptation for Earth Observation
No full textInternational audienceThe increasing availability of Earth observation data offers unprecedented opportunities for large-scale environmental monitoring and analysis. However, these datasets are inherently heterogeneous, stemming from diverse sensors, geographical regions, acquisition times, and atmospheric conditions. Distribution shifts between training and deployment domains severely limit the generalization of pretrained remote sensing models, making unsupervised domain adaptation (UDA) crucial for real-world applications. We introduce FlowEO, a novel framework that leverages generative models for image-space UDA in Earth observation. We leverage flow matching to learn a semantically preserving mapping that transports from the source to the target image distribution. This allows us to tackle challenging domain adaptation configurations for classification and semantic segmentation of Earth observation images. We conduct extensive experiments across four datasets covering adaptation scenarios such as SAR to optical translation and temporal and semantic shifts caused by natural disasters. Experimental results demonstrate that FlowEO outperforms existing image translation approaches for domain adaptation while achieving on-par or better perceptual image quality, highlighting the potential of flow-matching-based UDA for remote sensing
Panda as the flagship of China’s digital diplomacy: Rethinking the intersection of network and emotional narrative strategy
No full textInternational audienceThis chapter aims to rethink the mediated communication ontology of China’s digital public diplomacy, taking digital panda diplomacy – the most successful public diplomacy campaign of China on social media in more than a decade of digital diplomacy – as a case to identify the emotional network communication structure and narrative strategies led by Beijing, so as to serve the Communist Party of China (CPC) ’s public diplomacy goals of telling China’s stories and demonstrating positive energy towards foreign publics. Chinese media have constructed a journalistic paradigm that promotes feelings of happiness in message receivers. The online production of panda-themed news stories involves three strategies: (a) anthropomorphic rhetoric that implements human-like expressions to make pandas seem “human,” (b) visual images of pandas to mediate relevant knowledge, and (c) manipulation of panda imagery to frame political and public-diplomatic messages that endorse China and its government
Repenser la responsabilité sociétale des marques à l'ère de la souveraineté stratégique : une approche intégrative par l'indicateur STAR
No full textInternational audienceThis article proposes an integrated analytical framework for assessing the territorial performance of brands across four key dimensions: Sovereignty, Ecological Transition, Social Autonomy, and Organizational Resilience (acronym STAR). The STAR indicator aims to objectify concepts that have, until now, been difficult to operationalize, in order to facilitate their integration into corporate strategic management. From an academic perspective, it bridges domains that are often treated separately—strategy, CSR, sustainable development, and territorialization. From a managerial perspective, it serves as a structuring self-assessment tool to guide brands toward more sustainable and sovereign trajectories.Cet article propose une grille intégrée d'analyse de la performance territoriale des marques autour de quatre dimensions clés : Souveraineté, Transition écologique, Autonomie sociale et Résilience organisationnelle (acronyme STAR). L'indicateur STAR vise à objectiver des concepts jusque-là peu opérationnalisés, afin de faciliter leur intégration dans le pilotage stratégique des entreprises. Sur le plan académique, il articule des champs souvent disjointsstratégie, RSE, développement durable et territorialisation. Sur le plan managérial, il constitue un outil d'autoévaluation structurant pour engager les marques dans des trajectoires plus durables et souveraines
FORMSpoT: A Decade of Tree-Level, Country-Scale Forest Monitoring
No full textThe recent decline of the European forest carbon sink highlights the need for spatially explicit and frequently updated forest monitoring tools. Yet, existing satellite-based disturbance products remain too coarse to detect changes at the scale of individual trees, typically below 100 m². Here, we introduce FORMSpoT (Forest Mapping with SPOT Time series), a decade-long (2014-2024) nationwide mapping of forest canopy height at 1.5 m resolution, together with annual disturbance polygons (FORMSpoT-Δ) covering mainland France. Canopy heights were derived from annual SPOT-6/7 composites using a hierarchical transformer model (PVTv2) trained on high-resolution airborne laser scanning (ALS) data. To enable robust change detection across heterogeneous acquisitions, we developed a dedicated post-processing pipeline combining co-registration and spatio-temporal total variation denoising. Validation against ALS revisits across 19 sites and 5,087 National Forest Inventory plots shows that FORMSpoT-Δ substantially outperforms existing disturbance products. In mountainous forests, where disturbances are small and spatially fragmented, FORMSpoT-Δ achieves an F1-score of 0.44, representing an order of magnitude higher than existing benchmarks. By enabling tree-level monitoring of forest dynamics at national scale, FORMSpoT-Δ provides a unique tool to analyze management practices, detect early signals of forest decline, and better quantify carbon losses from subtle disturbances such as thinning or selective logging. These results underscore the critical importance of sustaining very high-resolution satellite missions like SPOT and open-data initiatives such as DINAMIS for monitoring forests under climate change
A nonlinear micropolar continuum model with diffusion–reaction equation for remodeling of bone with trabecular lattice microarchitecture
No full textInternational audienceWe present a nonlinear micropolar continuum model that includes a diffusion–reaction equation for the remodeling of bone with a trabecular lattice microstructure. This micropolar formulation enables the modeling of bone’s adaptive response to mechanical stimuli. The remodeling process is described as a time evolution regulated by a feedback mechanism that adjusts both the orientation of the trabecular lattice microarchitecture, thanks to the micropolar formulation, and the mechanical properties, related to key morphological features such us bone density. The junctions between trabeculae are modeled as nodal points within the micropolar framework, incorporating the following energy densities: mechanical deformation, mechano-biologic contributions, and Rayleigh-type dissipation terms that control the time evolution of remodeling. We present the weak form of the energetic formulation, which includes the diffusion–reaction equation. The cases of isotropic and orthotropic material symmetries class are deduced from the general formulation. This weak formulation is adapted to the development of a computational model based on the use of the finite element method. At the end of this paper, we discuss aspects related to validation, model complexity, and possible clinical applicability
Mobility in adults with visual impairment: Results from an online survey
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Robotic total knee arthroplasty with functional positioning safely addresses major coronal deformities: Comparable complications and survivorship
No full textInternational audienceAbstract Purpose Robotic‐assisted total knee arthroplasty (TKA) has emerged as a reliable strategy to improve surgical accuracy and enable functional alignment (FA), also referred to as functional knee positioning (FKP). However, its application in patients with major coronal plane deformities remains under‐investigated. This study aimed to evaluate complication rates, implant survival, radiographic outcomes and patient‐reported measures in patients with severe deformities undergoing robotic‐assisted TKA with FA/FKP principles compared to matched controls. Methods A retrospective comparative study was conducted on patients who underwent robotic‐assisted TKA between March 2021 and February 2023 at a single high‐volume centre. Patients with ≥15° varus or ≥10° valgus deformity were included in the study group and matched 1:1 with controls presenting neutral alignment. All procedures used the Mako robotic‐arm‐assisted system with standardised FA/FKP principles. Clinical outcomes included knee society score (KSS), forgotten joint score (FJS‐12), Kujala anterior knee pain scale (AKPS) and range of motion. Radiographic measurements and robotic data were assessed. Complications, reoperations and revision rates were analysed. Results Eighty‐eight patients (44 per group) were analysed, with a mean follow‐up of 2.8 ± 0.9 years. Complication and revision rates were comparable between groups (revision: 2.3% vs. 0%, p = 0.987). Patients with major deformities achieved higher FJS‐12 scores (83.9 ± 20.2 vs. 74.9 ± 19.0, p = 0.040), although the difference did not exceed the minimal clinically important difference (MCID = 9.9). Postoperative mHKA was less neutral in the deformity group (176.8° ± 4.7 vs. 180.0° ± 3.0, p = 0.002), without adverse impact on implant survival. Conclusions Robotic‐assisted TKA performed with FA/FKP principles appears to be a feasible option for patients with severe varus or valgus deformities. Despite residual alignment variability, complication and revision rates remained comparable to standard cases, and patient‐reported outcomes suggested greater perceived functional improvement. Level of Evidence Level III
CAN 2025 de football : quand l’image du sport influence le business et l’économie
No full textThe conversation ,https://theconversation.com/can-2025-de-football-quand-limage-du-sport-influence-le-business-et-leconomie-273279On the occasion of the 2025 Africa Cup of Nations (AFCON), this article analyzes the role of sport as a producer of economic images and trust signals for African countries. Drawing on information and communication sciences, it shows how major sporting events operate as visibility devices capable of influencing investors’, international partners’, and business actors’ perceptions. The article highlights the amplifying role of digital media and social networks in the real-time construction of national reputations, as well as the soft power and economic diplomacy issues associated with such events.À l’occasion de la Coupe d’Afrique des Nations (CAN) 2025, cet article analyse le rôle du sport comme producteur d’images économiques et de signaux de confiance pour les pays africains. À partir d’une approche en sciences de l’information et de la communication, il montre comment les grandes compétitions sportives fonctionnent comme des dispositifs de visibilité capables d’influencer les perceptions des investisseurs, des partenaires internationaux et des acteurs économiques. L’article met en lumière le rôle amplificateur des médias numériques et des réseaux sociaux dans la construction en temps réel de la réputation des pays hôtes, ainsi que les enjeux de soft power et de diplomatie économique associés à ces événements
En quoi le cas du Louvre questionne-t-il la sécurité des musées ?
No full textThe conversation https://theconversation.com/en-quoi-le-cas-du-louvre-questionne-t-il-la-securite-des-musees-272835This article examines contemporary challenges in museum security through the lens of the dramatic 2025 heist at the Louvre Museum. It highlights structural and human vulnerabilities in protective systems, the tensions between public accessibility and safety, and the limitations of technological surveillance. The author discusses how these issues call into question prevailing governance and security models in cultural institutions.Cet article analyse les enjeux contemporains de la sécurité des musées à partir du cambriolage spectaculaire survenu au Musée du Louvre en octobre 2025. Il met en lumière les vulnérabilités structurelles et humaines des dispositifs de protection, les tensions entre ouverture au public et sûreté, ainsi que les limites des approches technologiques en matière de surveillance. L’auteur discute comment ces défis remettent en question les modèles de gouvernance et de sécurité des institutions patrimoniales