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Stabilisation of a viscous conservation law by a one-dimensional external force
No full textWe study a damped scalar conservation law driven by the sum of a fixed external force and a localised one-dimensional control. The problem is considered in a bounded domain and is supplemented with the Dirichlet boundary condition. It is proved that any solution of the uncontrolled equation can be exponentially stabilised. As a consequence, we obtain the global approximate controllability to trajectories by a one-dimensional localised control
Anisotropic dynamics of two-photon ionization: An attosecond movie of photoemission
No full textInternational audienceImaging in real time the complete dynamics of a process as fundamental as photoemission has long been out of reach because of the difficulty of combining attosecond temporal resolution with fine spectral and angular resolutions. Here, we achieve full decoding of the intricate angle-dependent dynamics of a photoemission process in helium, spectrally and anisotropically structured by two-photon transitions through intermediate bound states. Using spectrally and angularly resolved attosecond electron interferometry, we characterize the complex-valued transition probability amplitude toward the photoelectron quantum state. This allows reconstructing in space, time, and energy the complete formation of the photoionized wave packet
La Comisión Argentina de Derechos Humanos en los foros internacionales
No full textInternational audienceEntre los distintos organismos e iniciativas que plasmaron la denuncia a la dictadura en el contexto argentino, una de las características fundamentales de la Comisión Argentina de Derechos Humanos (CADHU) fue su dimensión internacional, que resultó central tanto en su implantación geográfica como en sus objetivos. Esta dimensión internacional de la CADHU parece alejarla de las preocupaciones políticas y querellas entre actores políticos argentinos – una impresión acentuada por la propia estrategia de sus miembros, preocupados por mantener una imagen “despolitizada” hacia sus interlocutores en las organizaciones internacionales y agencias gubernamentales. Sin embargo, para apreciar el recorrido histórico de la CADHU, hay que reubicarla dentro de una trama más amplia, que tome en cuenta su implantación en redes militantes transnacionales, y el impacto de las concepciones políticas de sus miembros (enmarcadas en las distintas tradiciones revolucionarias argentinas) en la definición de su discurso de denuncia. En ese sentido, la lucha por los derechos humanos de la CADHU en los foros internacionales puso en práctica y tensionó concepciones políticas heredadas de la militancia en la Argentina de los años 1960 y 1970. Todas estas problemáticas se pueden observar a través de la acción de la CADHU en distintos tipos de foros internacionales o “espacios” de denuncia (1), en distintas iniciativas asociadas formal o informalmente al núcleo de la CADHU en el exterior (2), así como en el discurso de denuncia de la CADHU y su peculiar articulación entre un lenguaje jurídico “puro” y un anclaje persistente dentro de una reivindicación de liberación nacional y social (3)
Âge du bronze, Âge de guerre. Violence organisée et expressions de la force au IIé millénaire avant J.-C.: Colloque de l'Aprab 14-17 octobre 2020
No full textInternational audienceWarfare, opportunistic or ritualized violence, territorial tensions and the expression of strength and power are notions frequently put forward to characterize the Bronze Age, a period marked by an acceleration in the process of social hierarchization. In four sessions, the aim of this colloquium was to discuss these considerations based on sources relating to the organization, individual or collective, technical or symbolic, of manifestations of violence and war.- The Bronze Age in Corsica and Sardinia: violence and social instability on the islands- Attack, parry, retaliate: the techniques of the warrior- Taking a place or defending it: collective strategies of poliorcetics and battle- From the symbolism to the ideology of individual and social violenceGuerre, violence opportuniste ou ritualisée, crispation territoriale, expression de la force et du pouvoir sont des notions fréquemment mises en avant pour caractériser l’Âge du Bronze, époque marquée par une accélération des processus de hiérarchisation des sociétés. À travers quatre sessions, l’objectif de ce colloque a été de discuter ces considérations à partir de sources relatives à l’organisation, individuelle ou collective, technique ou symbolique, des manifestations de violence et de guerre.- L’âge du Bronze en Corse et en Sardaigne, violence et instabilité sociale en question dans les îles- Attaquer, parer, riposter : les techniques du guerrier- Prendre une place ou la défendre : les stratégies collectives de la poliorcétique et de la bataille- Du symbolisme à l’idéologie de la violence individuelle et social
Les outils de l'apprentissage profond au service de l'évaluation et de la conservation des archives
No full textInternational audienceThis article presents the results of the first year of a doctoral research on the use of an artificial intelligence technology, deep learning, to evaluate fromphotographs the condition state of the binded archives of the Parlement de Paris (parliament of Paris), with an automatic mode. This doctoral thesis is carried out at the university CY Cergy Paris Université in partnership with the Archives nationales (national archives) andthe ETIS laboratoryEste artículo presenta los resultados del primer año de investigación del doctorado sobre el uso de una tecnología de inteligencia artificial, el aprendizaje profundo, para evaluar el estado de conservación de los archivos encuadernados del Parlamento de París por medio de fotografías y de manera automática. Este doctorado se realiza en la universidad CY Cergy Paris Université en asociación con los Archivos nacionales y el laboratorio de ETIS.Cet article présente les résultats de la première année de recherche doctorale sur l’utilisation d’une technologie de l’intelligence artificielle, l’apprentissage profond, pour évaluer l’état de conservation des archives reliées du Parlement de Paris à partir de photographies et d’une manière automatique. Ce doctorat est mené à l’université de CY Cergy Paris Université en partenariat avec les Archives nationales et le laboratoire ETIS
Saving the United Nations from the Shadow of The Great Hall of People - Perspectives from an Indo-Italian Dialogue
No full textThe future of global security, peace, and power balance is presently being shaped by conflicts and cooperation among major powers. China's rise on the international stage, as well as its growing dominance in the United Nations, poses a threat to US hegemony. The brief explores the evolution of the United Nations through the Cold War era so as to show how two superpowers acted beyond the UN's mandate and misused their Veto Power. After recounting history, we aim to explain how China's ascent poses a challenge to the United Nations as an ‘international organization,’ a dynamic which demands immediate reforms. We examine three related areas: the United Nations itself, the United Nations Security Council (UNSC), and the Veto Power mechanism. Finally, we make recommendations regarding which model would be the most effective in the twenty-first century. South Asia, the most populous region in the world is not represented on the UNSC, and so are not either Africa or South America. A new United Nations Security Council model that is more inclusive, fair, and logically based is proposed. In order to ensure an adequate functioning of such model, an inclusive yet simple decision-making process is suggested to replace the current Veto Power mechanism
Bangabandhu Sheik Mujibur Rahman (1920-75): His Political Thoughts and Ideals
No full textThis paper is a reproduction of the inaugural lecture by Bangabandhu Sheikh Mujibur Rahman Professorial Fellow Dr. Harun-or-Rashid, delivered at the South Asia Institute (SAI), Centre for Asian and Transcultural Studies, University of Heidelberg, on January 20, 2022. The lecture marked the revival of aforementioned annual fellowship in the presence of Bangladesh’s Ambassador to Germany, Md. Mosharraf Hossain Bhuiyan. After a survey of Bangabandhu’s life and political career, Professor Rashid discusses his ideas about ‘Bengaliness’, economics, statehood, and Democracy. He pays particular attention to his controversial introduction of one-party system in Bangladesh in 1975, months before his assassination. Professor Rashid argues
that Bangabandhu had to temporarily curtail democratic rights in order to resist extreme pressure from the political Left