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Optimal energy management in multi energy microgrid with combined heat and power system and demand side response integration
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Symbiosis beyond the life and death of robots
No full textInternational audienceThis contribution argues that our relationships with social robots can be understood not only through their simulated lives, but also through their symbolic relation to death. Based on ethnographic observations conducted in robotics laboratories in Europe and the United States, we will see that robots are often perceived through a persistent ambiguity between life and death, which fuels humans' doubts and beliefs. This creates an ontological instability that not only shapes relationships but also conditions the ecological fate of machines. The conclusion invites us to think about symbiosis beyond the phenomenal animation that characterizes the life (and death) of robots at a symbolic level, emphasizing the need for sustainable forms of ecological animation
On transversely holomorphic partially hyperbolic flows
No full textIn this paper, we study transversely holomorphic partially hyperbolic flows, i.e. those whose holonomy pseudo-group is given by biholomorphic maps. We prove in the seven-dimensional case that under the assumption that the subcenter distribution is integrable to a flow invariant compact foliation with trivial holonomy, then the flow projects, by a smooth fiber bundle map, to a transversely holomorphic Anosov flow on a smooth five-dimensional manifold which is, in case of topological transitivity, either orbit equivalent to the suspension of a hyperbolic automorphism of a complex torus, or, up to finite covers, -orbit equivalent to the geodesic flow of a compact hyperbolic manifold
Narrative, visual, and didactic choices in the Supertroupers Project: designing a digital comic on energy
No full textInternational audienceThis paper reports on the design of a digital comic episode for teaching the concept of energy in secondary education. Developed through a collaboration between physics education researchers, a scriptwriter, and an illustrator, the episode introduces energy-related key ideas—such as physical state, transfer, conservation, and sources—through a fictional narrative centred on the construction of an hipotetical energy-generating device. The design was guided by a combined framework of Design-Based Research and the Model of Educational Reconstruction, allowing for alignment between scientific content, student conceptions, and didactic structuring. Classroom testing of a prototype in France and Spain informed several revisions, including clearer sequencing of environmental issues and enhanced narrative coherence. The final resource remains to be tested. It is part of a multilingual series and is accompanied by teacher support materials. This case illustrates the affordances and boundaries of DBR and MER for designing multimodal educational artefacts in international contexts
Quand la robustesse d’un dispositif pédagogique tient à l’agencement d’intérêts pluriels
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Les Aztèques, du codex à la bd
No full textInternational audienceL’historien Romain Bertrand et le dessinateur Jean Dytar retracent les premières années de la colonisation du Mexique en s’inspirant des gravures sur bois de l’art colonial et des codex mésoaméricains
: Obstacles Hindering the Sharing of Educational Resources within the French Ligue de l'Enseignement: a Mixed Methods Analysis
No full textFounded in 1866, the Ligue de l’Enseignement brings together tens of thousands of associations spread across the entire French territory. It provides training sessions in various fields, and the different associations which constitute the Ligue have produced a large number of educational resources and documents in this context. Rationalizing educational resource design has become increasingly crucial, to face competition. However, it faces several obstacles, that we analyze through a mixed method approach. While informal collaboration and resource sharing represent some of the key values that the movement and its employees advocate for, fostering collaboration in theory, at least two elements need to be highlighted. Firstly, the diversity of resource sharing practices that exist within the Ligue, a consequence of its decentralized nature, hinders initiatives that come from the central bodies of the institution. Secondly, a rampant form of competition exists within the organization, which poses an issue for collaborations.Fondée en 1866, la Ligue de l'Enseignement fédère des dizaines de milliers d'associations réparties sur l'ensemble du territoire français ; elle représente l'un des principaux mouvements d'éducation populaire français. A travers ses multiples composantes et fédérations, elle propose des formations dans des champs variés. Dans ce contexte, le mouvement a produit un grand nombre de ressources pédagogiques et de documents nécessaires à la conception et à l'animation de formations. Eu égard à l'importance que revêt la rationalisation économique de l'organisation, leur mutualisation représente un enjeu majeur pour mieux faire face à la concurrence. Elle se heurte à plusieurs obstacles, que nous analysons sur la base de méthodes mixtes. Si le partage et l'informel font partie des valeurs affichées par le mouvement associatif, ses salariés et ses bénévoles, un élément en théorie facilitateur de mutualisation, deux constats s'imposent. En premier lieu, les composantes de la Ligue ont des modes de fonctionnement très divers, y compris lorsqu'il s'agit de partager des ressources : cette variété de pratiques fait obstacle aux initiatives venues des instances centrales. En second lieu, une forme de concurrence inavouée à l'intérieur même du mouvement nuit aux collaborations
Are hydrophilic deep eutectic solvents a potential vehicle for topical delivery of Amphotericin B against cutaneous leishmaniasis? An investigation of physicochemical properties, tolerability and antileishmanial efficacy
No full textInternational audienceDeep eutectic solvents (DES) are homogenous, low-melting mixtures that are liquid at ambient temperature. Recently, DES have attracted interest as novel alternatives to traditional solvents in cutaneous formulations. The aim of this work was to have a better understanding of whether DES could be a safe and effective vehicle for topical delivery of Amphotericin B (AmB) in Cutaneous Leishmaniasis (CL). Based on solubility data, solutions of AmB in DES were prepared and characterized in terms of rheological properties, stability, and aggregation state of AmB by circular dichroism. The tolerability of DES-AmB on the skin was investigated by combining noninvasive techniques with histological assessment; systemic toxicity was also studied. Finally, the best-tolerated formulations were selected for direct assessment of both therapeutic efficacy and toxicity in a murine model of CL. Some of the formulations, especially those based on L-carnitine, could be promising candidates for further development of effective drug formulations against CL, as they were able to show either partial antileishmanial or palliative effects in robust test conditions. However, further optimization is necessary to ensure optimal stability and efficacy of the formulations