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Abstract In this joint work with Nicolas Forcadel (U. Rouen), we rigorously derive a macroscopic traffic flow model with a bifurcation or a local perturbation from a microscopic one. The microscopic model is a simple follow-the-leader with random …

Abstract The challenge of climate change, with its many impacts ( inter alia, melting glaciers, drought, flooding), underlines the need for sustainable water management. Instruments and actions must address uncertainty while mitigating risks. …

How could a neural vector represent the words of language, both in terms of their form and their meaning ? At the perceptual level, the lecture will examine the hypothesis that phonemes and syllables are represented by neural codes " factorized " into …

Lecture by Aude Bernheim, winner of the Collège de France Prize for Young Researchers 2022 All living organisms, from bacteria to elephants, face viruses. While the study of bacterial viruses is just over one hundred years old, understanding of the …

General issue of non-Buddhist temples in Central Asia : the dichotomy between fire temples and image temples, are there areas of overlap ? Presumed prototypes of fire temples in Bactria and Sogdiana in the Achaemenid and Hellenistic eras. The Shivaite …

After a reminder of the methodological principles of the study of Greek gods, between traditions and narratives and cultic practices, the name of the goddess Demeter is questioned. Indeed, the word mētēr , " mother ", enters into the composition of the …

Abstract Water and energy. Two deeply interconnected issues in today's world. Two extraordinary challenges for our society, requiring extraordinary solutions. The impact of fundamental science can be decisive in this struggle. Opening up radically new …

Awards ceremony for the 2022 season's data challenges , with presentation of results by the winners. Access the videos of the 2022 challenges Season 2022 challenge winners Bankers and markets (by Natixis) 1. Houssam Assila 1. Wajih Benrissoul 2. Franck …

Abstract The microcanonical ensembles envisaged by Boltzmann and formally introduced by Gibbs define a statistical model of a particle system by fixing the volume, energy and number of particles. The entropy of an isolated system increases with time. It …

Abstract The years 1970 are, on the one hand, those of the linguistic turn, which, by making language a paradigm, is interested in the variable and the difference, and implies a certain mobility of the letter ; they are, on the other hand, the moment of …

Abstract Valéry represents a certain idea of literature, one that follows other historical phases that contributed to the emergence of the literary " champ " (Bourdieu). In the seventeenth and eighteenth   centuries, the belles-lettres regime made …

Abstract This presentation reviews the state of archaeological research into the spread of the villa in the ancient Roman province of Dalmatia (now Croatia). Over and above this work, the research carried out by a Franco-Croatian team has above all …

Abstract Experiments with ultracold gases have made it possible to study dynamics of (nearly-) isolated quantum many-body systems, which has revived theoretical interest on this topic. In generic isolated systems, one expects nonequilibrium dynamics to …

How was a baby born in Mesopotamia during the Paleo-Babylonian period ? Under what conditions were they entrusted to a nanny ? How important were abandonments and adoptions ? These are the main questions to be addressed in this …

A seemingly simple variation of the standard Sherrington-Kirkpatrick model is the bipartite SK-model. There, the set of spin variables is split into two groups, and random pair interactions are only present between variables in different groups. Somewhat …

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