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A History of Physics: Phenomena, Ideas and Mechanisms. Essays in Honor of Salvo D'Agostino
No full textInternational audienc
Clausius' Laws, Boltzmann’s H-Theorem & Entropy: Mathematical Frameworks into a Kinetic Mechanism (1850–1901)
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Enhancing a bimetallic temperature highly-sensitive nanosensor based on surface plasmon resonance
No full textInternational audienceIn this work we have investigated a new design of high sensitivity temperature sensor, based on surface plasmon resonance (SPR) nanotechnology. The aim of this study is to detect small temperature variations by analyzing the plasmonic response of our SPR design. We have based our sensor on the bimetallic Kretschmann configuration at a wavelength of 633 nm. The main objective of our design is to measure the refractive index of the sensing medium as the sample temperature changes, in order to calculate sensitivity. A change in temperature induces a change in the local refractive index, leading to a shift in the surface plasmon resonance wavelength. The results also show a very high localization of the field intensity at the metal/detection medium interface. This new plasmonic design has the potential for biomedical thermal sensing applications
Rethinking Attention Gated with Hybrid Dual Pyramid Transformer-CNN for Generalized Segmentation in Medical Imaging
No full textInternational audienceInspired by the success of Transformers in Computer vision, Transformers have been widely investigated for medical imaging segmentation. However, most of Transformer architecture are using the recent transformer architectures as encoder or as parallel encoder with the CNN encoder. In this paper, we introduce a novel hybrid CNN-Transformer segmentation architecture (PAG-PVTUnet) designed for efficiently building a strong CNN-Transformer encoder. Our approach exploits attention gates within a Dual Pyramid hybrid encoder. The contributions of this methodology can be summarized into three key aspects: (i) the utilization of Pyramid input for highlighting the prominent features at different scales, (ii) the incorporation of a PVT transformer to capture long-range dependencies across various resolutions, and (iii) the implementation of a Dual-Attention Gate mechanism for effectively fusing prominent features from both CNN and Transformer branches. Through comprehensive evaluation across different segmentation tasks including: abdominal multi-organs segmentation, infection segmentation (Covid-19 and Bone Metastasis), microscopic tissues segmentation (Gland and Nucleus). The proposed approach demonstrates state-of-the-art performance and exhibits remarkable generalization capabilities. This research represents a significant advancement towards addressing the pressing need for efficient and adaptable segmentation solutions in medical imaging applications
User-centered personalized gamification: an umbrella review
No full textInternational audienceGamification, or the way of designing gameful experience in non-game context, has been studied for over a decade. Still, the idea of gamification personalized to the user is emerging and has been the subject of various reviews. This emergence underscores the importance of a synthesis of this research. The study focuses on four key research questions: (RQ1) What are the game design elements used to propose personalized gamification? (RQ2) What are the user characteristics used to perform user-centered personalized gamification? (RQ3) What are the outcomes of user-centered personalized gamification? (RQ4) What are the methods employed to evaluate game elements to personalize gamification? Following the PRISMA statement, three databases were searched (Scopus, IEEEXplore and ACM Digital Library) from which thirteen reviews were considered following our selection criteria. The analysis lists the game design elements found in the reviews. Most reviews focused on user modeling methods, particularly emphasizing on player typologies, personality traits, and learning styles. Concerning outcomes, more attention is given toward evaluating the impact on the user and their performance in an activity, while less attention is given to the evaluation of the system and its efficiency compared to other forms of gamification. Lastly, we investigate the evaluation methods, highlighting the need for greater detail in describing them. These findings contribute to a deeper understanding of user-centered personalized gamification besides showing the future interests in the domain. Finally, a research agenda is presented based on our results on the game design elements, the user characteristics and the evaluation methods
Une analyse des modèles socioéconomiques associatifs en actes
No full textLes associations ont connu des transformations structurelles tant au niveau de leur organisation que de leur gestion, dans un contexte notamment de raréfaction des ressources publiques. Face à cela, les acteurs associatifs tentent de faire valoir les particularités de leurs modèles socio-économiques. Quel(s) modèle(s) socioéconomique(s) déploient les associations ? Comment font-elles pour se pérenniser sans trahir leur projet dans ce contexte ?Ce cahier rassemble des réflexions issues d’un travail de recherche réalisé par un collectif de chercheurs membres du Réseau inter-universitaire de l’ESS (RIUESS). Il s’appuie sur l’analyse de trois champs d’activités (centres sociaux, tiers-lieux associatifs et l’insertion) et propose une lecture pluridisciplinaire
Historical Foundations of Nanotechnology: Emergences, Inventions and Discoveries
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Marcel Bluwal
No full textRéalisateur français, metteur en scène de théâtre, de cinéma et de télévision, Marcel Bluwal (* 26 mai 1925 à Paris, † 23 octobre 2021 à Paris) est une figure emblématique de la télévision française. À travers ses réalisations de dramatiques, de téléfilms et de séries, il a contribué à la diffusion du théâtre et de la littérature de langue allemande en France et a su atteindre un large public tout en offrant une interprétation originale des œuvres adaptées. Sa mise à l’écran de deux pièces d’Arthur Schnitzler, Liebelei (1956) et Mitzi (1978), ainsi que la réalisation de la série télévisée Mozart (1982) témoignent de son intérêt pour la culture autrichienne et, plus largement, pour la culture germanophone. Cet intérêt s’illustre également dans ses adaptations de deux grandes pièces du répertoire allemand pour la télévision, Woyzeck de Georg Büchner (1964) et Lulu de Frank Wedekind (1978), ainsi que dans ses mises en scène d’opéras de Mozart dans les années 1970-1980
Utility-based agent model for intermodal behaviors: A case study for urban toll in Lille
No full textInternational audienceTo reduce the congestion and pollution in urban cities, the political authorities encourage the modal shift from private cars in favor of sustainable trip behaviors such as intermodality (through combinations of private car and public transport). Coercive decisions such as urban tolls are also an increasingly investigated solution. To avoid the cost of toll taxes, agents thus select intermodal transportation modes (private cars and public transport) by parking their vehicles in park-and-ride (PR) facilities at the entrance to the area toll. This paper proposes a methodology for an agent-based model (ABM ), particularly a model called utility-based agent, to reproduce intermodal trip behaviors in a city and to assess the impact of an urban toll. In this context, we focus on multinomial logit models, coupled with the agent-and-activity simulation tool MATSim, is used to determine the modal choice for each agent. Based on open data (for European Metropolis of Lille, MEL), the simulation shows that 20 € (21.75 $) of toll tax is sufficient to reduce by 20% the use of private vehicles