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    Vers un banc d'essai flexible pour les systèmes d'exploitation réseau dans le Computing Continuum

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    National audienceLa réalisation complète du Computing Continuum reste un défi en raison du manque d'infrastructures de recherche adaptées pour l'expérimentation à grande échelle. Pour y remédier, nous proposons un banc d'essai conceptuel visant à améliorer la reproductibilité, l'évolutivité et la robustesse des expériences de réseau Computing Continuum. Ce banc d'essai offre une grande flexibilité, permettant aux expérimentateurs de modifier les systèmes d'exploitation des équipements réseau et de reconfigurer dynamiquement les topologies réseau. Nous définissons trois scénarios d'utilisation distincts, allant des environnements multi-opérateurs aux architectures de réseau internes des fournisseurs de télécommunications, tous déployables sur la topologie de réseau proposée. L'article explore également des solutions pour la gestion de la topologie virtuelle, le déploiement du système d'exploitation et l'orchestration des services

    Integrating Earth system changes into sub-national governance. Case of territorialised translations of planetary boundaries-related frameworks

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    International audienceRecognizing the impact of political decisions on global tipping points, sub-national governments have emerged as part of Earth system tipping point governance (ESTP- Milkoreit et al., 2024). However, integrating global environmental goals into local governance remains a challenge.We reviewed 81 translations of planetary boundaries and related frameworks in terms of territorialised impact assessments. We explored how the methodologies developed provide an opportunity to share a systemic assessment of territorial contributions to global environmental problems faced with downscaled boundaries (Bai et al., 2024). This represents a potential for setting goals for governance arising from Earth system analysis, which is emphasised in these publications that integrate different agenda-setting intentions (Kingdon,1995). Going further, we have identified the justice issues (Gupta et al., 2023) inherent to the methodological choices for translating from global to local that affect this goal-setting process.To investigate the influence of the translations in the setting of local goals, we interviewed French sub-national governance actors involved in the application of these methods. We identify a range of different interests, from a better understanding of the environmental stakes to providing guidance for a paradigm shift in public action. However, the methods they used were limited in terms of integrating systemicity and justice issues due to socio-technical difficulties, the scope of the actors' missions and commitment of higher-level actors.Overall, planetary boundaries translations are contributing to the agenda-setting of Earth System issues in sub-national governments, but face limitations that need to be addressed to define goals that could inspire ESTP governance

    The genome of G. fossarum: a genomic toolkit to investigate endocrine and metabolic disruption in amphipod sentinel species

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    International audienceBackground/Introduction. Amphipods, small crustaceans commonly found in freshwater and marine habitats, play a critical role in nutrient cycling, sediment turnover and as a food source for higher trophic levels. Among amphipods, the Gammaridae represent a large family of species, some of which, such as Gammarus fossarum, are widely used as sentinel species for assessing water quality and as animal models for ecotoxicology. While some transcriptomes are available for several gammarid species, the lack of good quality genomic resources is a major research gap to improve our understanding of their physiology and response to aquatic pollution. Here, we report how we obtained the first contiguous assembly of the genome of a single amphipod of the species Gammarus fossarum and the first insights from this unique genomic resource for the family Gammaridae.Methods. This genome project was designed to take advantage of recent advances in high-throughput long-read sequencing technologies and to streamline the bioinformatics assembly pipeline. High-molecular-weight DNA extracted from a morphologically determined male Gammarus fossarum was used for subsequent sequencing. A single molecule real time (SMRT) sequencing platform (PacBio) was used to sequence three different libraries on three HiFi SMRT cells. A first assembly was performed using the Hifiasm de novo assembler.Results. The main results of the assembly indicate a haploid genome size of 3.2 Gb with a sequencing depth of 40x. The N50 is 239 kb and the number of contings is 50,732, with a BUSCO completeness value of 88.3%, indicating the most contiguous gammarid genome. Phylogenetic analysis comparing the COI sequences of several populations of continental gammarid populations confirmed that the organism belonged to a Gammarus fossarum population (subgroup B). Here, we present the results on the systematic annotation of the metabolic pathways obtained using the CycADS pipeline and the identification of the genes belonging to the ecdysone signalling axis.Conclusion. We provide a first high quality genome for the species Gammarus fossarum. This resource will be useful for both ecological and ecotoxicological communities, allowing a better characterisation of the diversity of gammarid populations and the study of metabolic and endocrine disruption caused by chemical contaminants

    Empreinte Énergétique de l'Apprentissage Distribué dans l'IoT : une Approche Conjointe Basée sur l'Émulation Matériel-Logiciel

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    National audienceL'Intelligence Artificielle Distribuée dans le Continuum Informatique rencontre des défis liés aux exigences computationnelles et de communication de l'apprentissage sur les dispositifs en périphérie. Pour y remédier, nous présentons FLIoT, un émulateur d'apprentissage distribué basé sur ns-3, intégrant des interactions réseau réelles et une évaluation énergétique fondée sur des mesures matérielles empiriques de l'ESP32-C6 DKC-1. FLIoT, testé sur des données de bâtiments intelligents avec le framework Flower, facilite l'évaluation de la consommation énergétique en permettant la création de signatures énergétiques applicatives, accélérant ainsi le prototypage dans les environnements d'apprentissage distribué

    Mesure automatique de l'avancement d'un chantier de construction intérieur à l'aide de la réalité mixte

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    Automated inspection of construction sites presents a significant opportunity to improve efficiency and accuracy in the building industry. This thesis addresses the challenges of interior construction progress monitoring by developing and evaluating an innovative augmented reality (AR) solution. Leveraging the superimposition of Building Information Modeling (BIM) data onto real environments through an AR headset, the proposed system aims to detect and identify HVAC and electrical components automatically. These elements, with their heterogeneous shapes, present unique challenges for computer vision. For a complete analysis, two complementary methods are presented: one, geometric, relies on a ray-tracing algorithm and 3D reconstruction of point clouds acquired by depth sensors; the other, based on 2D image analysis, uses a deep neural network. A critical barrier in applying deep learning to this domain is the scarcity of large, annotated datasets for training. To address this, the study introduces an automated process to generate photorealistic synthetic datasets from BIM models using a graphics engine. These datasets enable the training of a state-of-the-art instance segmentation network, enhanced by transfer learning methods. Experiments conducted on real construction sites demonstrate the system's potential for more efficient and reliable progress monitoring. The integration of synthetic data generation, deep learning, and AR showcases the added value of this approach, advancing current practices in indoor construction progress monitoring and highlighting its feasibility for real-world application.L'inspection automatique de chantier de construction dans le bâtiment est une problématique ardue, mais aux bénéfices importants pour les constructeurs. Le travail présenté dans cette thèse porte sur le développement et l'évaluation d'une solution de Réalité Augmentée (RA) pour le suivi automatisé de l'avancement des travaux de construction intérieurs. Face aux limites des méthodes d'inspection manuelles, chronophages et sujettes à erreurs, ce travail présente une approche novatrice exploitant la superposition du modèle BIM (Building Information Modeling) à l'environnement réel via un casque de RA. L'objectif principal est la détection et l'identification automatiques des équipements du génie climatique et électrique, dont la forme hétéroclite pose des problèmes significatifs. En vue d'une analyse complète, deux méthodes complémentaires sont étudiées : l'une, géométrique, s'appuie sur un algorithme de lancer de rayons et la reconstruction 3D de nuages de points acquis par des capteurs de profondeur ; l'autre, basée sur l'analyse d'images 2D, utilise un réseau de neurones profonds. Pour pallier le manque de données réelles d'entraînement, un processus automatisé de génération de données synthétiques à partir de modèles BIM est proposé et évalué. Les expérimentations menées sur des chantiers de construction réels démontrent le potentiel de l'approche pour une inspection plus efficace et fiable, et justifient sa plus-value dans les pratiques actuelles des équipes de chantier

    Des limites planétaires aux frontières du système Terre : quelles implications pour la Métropole de Lyon ? Synthèse

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    Millenaire 3 La prospective de la Métropole de LyonEn 2019 la Métropole de Lyon a été parmi les premiers acteurs publics français à s’approprier la notion de limites planétaires.Depuis, ce référentiel a connu un vif succès et a continué d’évoluer, notamment en intégrant les préoccupations de justice. En 2024, accompagnée d’un ingénieur stagiaire Duli Rashid et de plusieurs chercheurs de l’École des Mines de Saint-Étienne, la Métropole s’est interrogée sur la manière de territorialiser ces limites planétaires.Cet article présente une synthèse des travaux du dossier

    User-Friendly Orchestration Management Proposal

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    International audienceComputing Continuum, with its diverse architectures and distributed features, presents certain challenges in managing and orchestrating resources. Traditional orchestration often requires specialized knowledge, which can be a barrier for users who may lack expertise. In this paper, we introduce User-Friendly Orchestration Management (UFOM), an innovative approach designed to simplify the orchestration of containerized services. With an intuitive interface, automated workflows, and contextual support, UFOM streamlines the entire process. Importantly, UFOM integrates seamlessly with Osmotic Computing, enabling smooth interactions between users and technology. This novel approach democratizes orchestration, empowering users to deploy and manage applications with minimal technical difficulty. We will examine its impact on Quality of Experience (QoE) and present a case study on smart home automation. This case study highlights the capabilities of UFOM in real-world environments, stressing its effectiveness in streamlining deployment, monitoring, and maintenance. Our findings suggest that UFOM not only fosters user independence, but also maintains system reliability and efficiency

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