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Abstract We are interested in quasi-linear parabolic systems, in which the diffusion matrix is not uniformly elliptic, but verifies a condition, known as the Petrovskii condition, of positivity of the real part of the eigenvalues. The locally …

Abstract Discovered by Edmond Becquerel in 1839, the photovoltaic effect transforms sunlight into electrical power. Spectacular advances in this field have made solar cells emblems of the energy transition. However, although these objects have become …

Abstract In the second   part of the lecture, attention turns to electrodes designed for neural stimulation, a crucial technique for modulating nerve activity in therapeutic and research contexts. As with the recording of neural activity, electrochemical …

Abstract The increasing use of digital technologies is often described as a revolution. In this session, we will challenge this assumption by exploring how digital technologies, and in particular algorithmic governance techniques, under the guise of …

Abstract France really embarked on its colonial adventure in the 17th   century, following the establishment of trading posts in North America and on the coast of Senegal. This marked the beginning of the spread of French throughout the world, as well as …

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Abstract Why did Yhwh decide to destroy his creation, and how did he go about it  ? The intertwining of two   different accounts of the flood in Gn   6-7 provides several answers to these questions. Documents and media Download …

Abstract This lecture will review two concepts that now feature prominently in environmental histories of the modern world and in global change science: The Great Acceleration and the Anthropocene. It will present evidence, drawn mainly from …

Abstract The physical climate is a complex system. Because of the feedbacks that can stabilize or destabilize the climate, change is not linear. Human societies are also complex systems, and history can help us describe the possible tipping points that …

Lecture plan 2.3. and the papyri  Exercises delivered by monasteries (continued) 2.3.2. The case of the Epiphanius monastery 2.3.2.1. A teacher in …

Abstract To tackle a legal problem, you first need concepts to make it manageable, then solve it in the light of value criteria deemed preferable. The jurist P. Alfenus Varus, consul in 39 BC and a leading figure on the Roman political and cultural scene, …

Abstract In the foreword to his Histoire de la Révolution française , Michelet evokes this "   singular trait of France   ", whose people would only have understood politics "   as devotion and love   ". As late as the end of the 20th   century, the …

Abstract The third and fourth lectures will focus on the role of activity in the construction of cortical circuits, from the maturation and migration of different populations of neurons, the roles of transient neurons and circuits, to the integration and …

This conference is only available in audio. Abstract In Roman times, ivory was a highly prized luxury material. Its uses ranged from small, everyday instruments to decorations and even furniture and votive objects. The same was true of bone, a material …

Abstract Examples of environmental impacts on the plant kingdom. Documents and media Download support …

Abstract The magic papyri of Late Antiquity preserve few traces of their social context. Yet careful study can reveal valuable information about the individuals who composed and copied them. In this seminar, we propose to discuss accounts of the education …