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Subjective and Objective Audio-Visual Quality Assessment for Omnidirectional Videos
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Evaluation of a Power Management Strategy for Autonomous Cyber-Physical Systems with Real-Time Constraints
No full textInternational audienceDesigning Energy Harvesting Cyber-Physical Systems (EH CPS) with real-time capabilities requires a sophisticated approach that integrates energy aware scheduling policies, predictive modeling, and dynamic task allocation. By effectively managing energy resources, these systems can adopt an energy neutral behavior: they ensure perpetual operation under real-time requirements even in environments with intermittent energy availability. In response to this challenge, this paper introduces the Extended Earliest Deadline First with Harvesting (EED-H) algorithm, a novel scheduling and power management framework. The EED-H algorithm employs an energyaware prioritization mechanism, dynamically adjusting job execution based on real-time assessments of available energy, slack energy, and slack time. This adaptive approach not only ensures that jobs meet their deadlines but also optimizes energy utilization during periods of scarcity. By addressing the critical challenges of energy management in CPS, the EED-H algorithm paves the way for more resilient and efficient self-sustaining devices. The experimental results demonstrate that the proposed algorithm reduces the deadline missing rate by 37% when compared to the well known Earliest Deadline First scheduler.</div
Impact de la dynamique de bulles sur l'efficacité de l'électrolyse de l'eau
No full textInternational audienceImpact de la dynamique de bulles sur l'efficacité de l'électrolyse de l'ea
Changes in microcirculation following transcatheter aortic valve implantation in patients with stable coronary artery disease
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Malcolm Gaskill, The Ruin of All Witches. Life and Death in the New World , Londres, Penguin/Random House, 2022, xxv + 309 p., ISBN 978-0-141-99148-1
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Effect of SBPBF₄ addition in acetonitrile- and linear carbonate-based electrolytes: Improving voltage stability and reducing gas evolution in supercapacitors
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Below the Surface, Beyond the Past : Archéologie maritime et technologies numériques
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Tomographie par impédancemétrie électrique : technologie et applications cliniques
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Dans les tourbières du marais des Terriers à Vimont (Calvados). L'extraction de la tourbe en Normandie au Moyen Âge
No full textInternational audienceIn 2019, an excavation carried out by the Calvados archaeological department in the Vimont peat bog uncovered remains dating from the Late Prehistoric period to the Modern Era, including a group of peat-cutting pits from the 13th–14th centuries. Following the construction of a channel during the Early Middle Ages—very likely linked to the installation of a mill—the peat layers filling the marsh began to be exploited from the 11th century onward. The archaeological evidence, when compared with the archives of the Benedictine Abbey of Saint-Martin de Troarn, sheds light on the practices of this activity, which was largely conducted by the monks. Winged spades were used—a tool model imported from Flanders by Norman monks at the end of the 13th century—which continued to be used in northwestern Europe up to the 19th century. Dried peat blocks served as a valued fuel, likely employed in the smoking of the thousands of eels recorded in the monastery’s rent accounts.En 2019, una excavación realizada por el servicio arqueológico del Calvados en la turbera de Vimont sacó a la luz vestigios que datan desde la Prehistoria reciente hasta la época moderna, entre ellos un conjunto de fosas de extracción de turba de los siglos XIII-XIV. Tras la adecuación de un canal durante la Alta Edad Media —muy probablemente en relación con la instalación de un molino—, comenzó, a partir del siglo XI, la explotación de los bancos de turba presentes en el relleno del pantano. Los restos arqueológicos, confrontados con los archivos de la abadía benedictina de Saint-Martin de Troarn, aportan información sobre las modalidades de esta actividad, llevada a cabo principalmente por los monjes. Se utilizaban palas aladas, según un modelo importado de Flandes por los monjes normandos a finales del siglo XIII, que se mantuvo en uso hasta el siglo XIX en el noroeste de Europa. Los bloques de turba seca constituían un combustible apreciado, probablemente utilizado para el ahumado de los miles de anguilas contabilizadas en las rentas del monasterio.En 2019, une fouille menée par le service archéologique du Calvados dans la tourbière de Vimont a vu la mise au jour de vestiges de la préhistoire récente à l’Époque moderne, dont un ensemble de fosses de tourbage des XIIIe-XIVe siècles. À l’aménagement du chenal au cours du haut Moyen Âge, en lien très probablement avec l’installation d’un moulin, succéda, à partir du XIe siècle, la mise en coupe des bancs de tourbe présents dans le comblement du marais. Les vestiges en présence, confrontés aux archives de l’abbaye bénédictine Saint-Martin de Troarn, nous éclairent sur les modalités de cette activité, pour l’essentiel aux mains des moines. On y employait des bêches à aileron, selon un modèle importé de Flandre par les moines normands à la fin du XIIIe siècle et qui s’est perpétué jusqu’au XIXe siècle dans le nord-ouest de l’Europe. Les mottes de tourbe séchée constituaient un combustible apprécié, qui fut sans doute utilisé pour la fumaison des milliers d’anguilles comptabilisées dans les rentes du monastère