94 research outputs found
Patrimoines des vestiges de la Seconde Guerre mondiale en Normandie occidentale
Lancé en 2015, ce projet collectif de recherche vise à inventorier dans les départements du Calvados, de la Manche et de l’Orne tous les éléments du dernier conflit qui sont conservés, disparus ou enfouis. Il s’appuie à la fois sur des études documentaires, des enquêtes de terrain ainsi que sur une base de données. Cette opération coordonnée par l’université de Caen et la Drac s’est jusqu’à présent appuyée sur le soutien financier de la Drac et des trois départements de l’ex-Basse-Normandie. ..
Role of Gaze Cues in Interpersonal Motor Coordination: Towards Higher Affiliation in Human-Robot Interaction
Background The ability to follow one another's gaze plays an important role in our social cognition; especially when we synchronously perform tasks together. We investigate how gaze cues can improve performance in a simple coordination task (i.e., the mirror game), whereby two players mirror each other's hand motions. In this game, each player is either a leader or follower. To study the effect of gaze in a systematic manner, the leader's role is played by a robotic avatar. We contrast two conditions, in which the avatar provides or not explicit gaze cues that indicate the next location of its hand. Specifically, we investigated (a) whether participants are able to exploit these gaze cues to improve their coordination, (b) how gaze cues affect action prediction and temporal coordination, and (c) whether introducing active gaze behavior for avatars makes them more realistic and human-like (from the user point of view). Methodology/Principal Findings 43 subjects participated in 8 trials of the mirror game. Each subject performed the game in the two conditions (with and without gaze cues). In this within-subject study, the order of the conditions was randomized across participants, and subjective assessment of the avatar's realism was assessed by administering a post-hoc questionnaire. When gaze cues were provided, a quantitative assessment of synchrony between participants and the avatar revealed a significant improvement in subject reaction-time (RT). This confirms our hypothesis that gaze cues improve the follower's ability to predict the avatar's action. An analysis of the pattern of frequency across the two players' hand movements reveals that the gaze cues improve the overall temporal coordination across the two players. Finally, analysis of the subjective evaluations from the questionnaires reveals that, in the presence of gaze cues, participants found it not only more human-like/realistic, but also easier to interact with the avatar. Conclusion/Significance This work confirms that people can exploit gaze cues to predict another person's movements and to better coordinate their motions with their partners, even when the partner is a computer-animated avatar. Moreover, this study contributes further evidence that implementing biological features, here task-relevant gaze cues, enable the humanoid robotic avatar to appear more human-like, and thus increase the user's sense of affiliation
Vestiges de la Seconde Guerre mondiale en Basse-Normandie
Ce programme collectif de recherche vise à inventorier de manière exhaustive les éléments conservés, disparus ou enfouis, formant des ensembles cohérents, sans se limiter aux seules élévations, et à appréhender les différents éléments dans l’histoire du conflit et leur place dans le dispositif défensif. Il s’appuie à la fois sur des études documentaires, des recherches de terrain ainsi que sur une base de données couplée à un SIG. Ce projet répond à un besoin urgent de gestion de ce patrimoin..
Patrimoines de la Seconde Guerre mondiale en Normandie
Ce projet collectif de recherche lancé en 2015 vise à inventorier dans les départements du Calvados, de la Manche et de l’Orne tous les éléments du dernier conflit qui sont conservés, disparus ou enfouis, et à en restituer la cohérence historique. Il vise particulièrement à étudier les différents éléments dans l’histoire du conflit et leur place dans les dispositifs militaires. Il porte donc aussi bien sur les vestiges liés à l’Occupation que sur les vestiges alliés ou les traces et aménageme..
Vestiges de la Seconde Guerre mondiale en Basse-Normandie
Pour rappel, ce programme collectif de recherche vise à inventorier de manière exhaustive les éléments conservés, disparus ou enfouis, formant des ensembles cohérents, sans se limiter aux seules élévations, et à appréhender les différents éléments dans l’histoire du conflit et leur place dans le dispositif défensif. Il s’appuie à la fois sur des études documentaires, des recherches de terrain ainsi qu’une base de données couplée à un SIG. Ce projet répond à un besoin urgent de gestion de ce p..
Les Déficits cognitifs dans la schizophrénie (validation d'un autoquestionnaire)
LYON1-BU Santé (693882101) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF
Les 75 ans de la bataille de Normandie. Les révélations de l’archéologie des conflits
National audienceLa bataille de Normandie fête en juin 2019 son 75e anniversaire. Grâce à l’archéologie des conflits, ses vestiges ont été documentés à l’occasion d’opérations préventives venant compléter et enrichir les archives historiques. Les traces du débarquement, au sol comme sous la mer, et les ruines du mur de l’Atlantique font également l’objet de deux projets de recherche venant soutenir la candidature des Plages du débarquement à l’inscription sur la Liste du patrimoine mondial de l’Unesco. Archéologia dresse ici un premier bilan de ces programmes ambitieux et passionnant
2,2'-Bipyridine-3,3'-dicarboxylic carbohydrate esters and amides. Synthesis and preliminary evaluation as ligands in Cu(II)-catalysed enantioselective electrophilic fluorination.
International audienceA series of 10 new carbohydrate-substituted bipyridines were prepared from 2,2′-bipyridine-3,3′-dicarboxylic acid, itself easily available from ortho-phenanthroline. As a preliminary exploration of their use as chiral ligands, Cu(II)-catalysed asymmetric electrophilic fluorination of model β-ketoesters using these simple and easily accessible chiral bipyridines was studied. Only modest enantioselectivity was observed in this reaction, although the ee was in a similar range as those provided by known and more elaborate ligands
Changes in sediment microbial diversity following chronic copper-exposure induce community copper-tolerance without increasing sensitivity to arsenic
International audienceSediment microbial communities were exposed for 21 days to an environmental concentration of copper to assess Cu-induced composition changes and resulting effects on microbial sensitivity to acute Cu and As toxicity. Chronic Cu exposure reduced the diversity of the bacterial and archaeal communities from Day 0 to Day 21. The pollution-induced community tolerance concept (PICT) predicts that loss of the most sensitive taxa and gain of more tolerant ones should increase the capacity of Cu-exposed communities to tolerate acute Cu toxicity. Although diversity loss and functional costs of adaptation could have increased their sensitivity to subsequent toxic stress, no increased sensitivity to As was observed. PICT responses varied according to heterotrophic activity, selected as the functional endpoint for toxicity testing, with different results for Cu and As. This suggests that induced tolerance to Cu and As was supported by different species with different metabolic capacities. Ecological risk assessment of contaminants would gain accuracy from further research on the relative contribution of tolerance acquisition and co-tolerance processes on the functional response of microbial communitie
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