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Academic literature on the topic 'Flotteurs autonomes'
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Journal articles on the topic "Flotteurs autonomes"
Prigent, Vivien. "Notes sur l’évolution de l’administration byzantine en Adriatique (VIIIe-IXe siècle)." Mélanges de l École française de Rome Moyen Âge 120, no. 2 (2008): 393–417. http://dx.doi.org/10.3406/mefr.2008.9506.
Full textDissertations / Theses on the topic "Flotteurs autonomes"
Vignes, Lucie. "Etudes de la circulation et des modifications des eaux profondes circumpolaires sur le plateau continental sud-ouest de la mer de Weddell en Antarctique." Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS384.
Full textAntarctica and its surrounding seas are an important area regarding the climate regulation as well as an region highly impacted by climate change. Despite the paramount importance of this region, it is still largely under sampled in comparison with the other oceanic basins. Oceanic circulation around the antarctic margins regulates ice shelves melts and their buttressing effect on the antarctic Ice sheet, as well as the deep heat storage induced by vertical water masses movements. Thus understading the water mass circulation around Antarctica is fundamental for our comprehension of the global oceanic circulation, as well as the contribution of the Antarctic ice sheet to the sea level rise. In this manuscript I propose a study of a region on the antarctic margins : the Weddell Sea. This sea is the home region of the largest of the antarctic ice shelf, it is also the region producing the most important volume of deep waters. However the ocean-cryosphere processes in this region as still poorly understood. Some studies showed a subtle equilibrium and that the Weddell Sea, in response to the climate change, could be deeply modified and lead to a important melt of the ice shelf and a drastic reduction of the deep water formation. However, as long as our observations don’t allow us the better understand the processes at work, we can not refine our understanding of the Weddell Sea
Ayeb, Neil. "Administration autonomique et décentralisée de flottes d'équipements de l'Internet des Objets." Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALM054.
Full textWith the expansion of Internet of Things (IoT) that relies on heterogeneous; dynamic; and massively deployed devices; Device Management (DM), which consists of firmware update, configuration, troubleshooting and tracking, is required for proper quality of service and user experience, deployment of new functions, bug fixes and distribution of security patches.Existing Home and IoT industrial DM platforms are already showing their limits with a few static home and IoT devices (e.g., routers, TV Decoders). Currently, these platforms are mainly manually operated by experts such as system administrators, and require extensive knowledge and skills. Heterogeneity implies that devices have diverse compute and network capabilities. Dynamicity translates to variation of devices environments (e.g., network quality, running services, nearby devices). The massive aspect is reflected in fleets composed of billions of devices as opposed to millions currently.Therefore, IoT device administration requires launching administration operations that assure the well-functioning of device fleets. These operations are to be adapted in terms of nature, speed, target, accordingly to devices current service requirements, computing capabilities and network conditions. Existing manually operated approaches cannot be applied on these massive and diverse devices forming the IoT.To tackle these issues, our work in an industrial research context, at Orange Labs, proposes applying autonomic computing to platform operation and distribution. It aims to ensure that administration requirements of a device fleet are automatically fulfilled using the optimal amount of resources and with the least amount of execution errors.Specifically, our contribution relies on four coordinated autonomic loops. The first two loops are responsible for handling fleet variation and update operations dispatching, while the remaining two others focus on vertical and horizontal scalability. Our approach allows automatic administration platform operation, more accurate and faster error diagnosis, vertical and horizontal scaling along with simpler IoT DM platform administration.For experimental validation, we developed two prototypes: one that demonstrates the usability of our approach with Orange's industrial IoT platform for its piloting, while the other one demonstrates vertical scalability using extended open-source remote administration software. Our prototypes show encouraging results, such as two times faster firmware upgrade operation execution speed, compared to existing legacy telecommunication operator approaches
Bindel, Sébastien. "Algorithmique et applications pour les flottes hétérogènes multiniveaux de matériels mobiles communicants autonomes." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0172/document.
Full textUnmanned vehicles are defined as autonomous entities with no operator on board. They are a part of a global system called Unmanned System which also includes elements such as a control station. These vehicles are designed to fulfil the requirements of assigned missions and can be deployed in spatial, aerial, terrestrial and maritime environments. Since a mission cannot be accomplished with a single vehicle, vehicles have to cooperate in order to achieve a global mission. However, cooperation requires communication interoperability between all vehicles. Even if previous works have standardized application protocols, it is not sufficient to ensure data delivery between all vehicles, since they have a specific mobility pattern and sometimes different network interfaces. The main goal of this thesis is to offer a seamless network, including all kinds of unmanned systems. We propose a cross layer approach in order to route and deliver data to any vehicle. In this context, each vehicle is able to transmit data to another without information on the global topology. We have developed a routing protocol, which adapts its strategy, according to the contextand to the network environment. In addition, we exploit the any cast diffusion technique based on vehicles features in order to adopt an optimal routing scheme
Autefage, Vincent. "Découverte de services et collaboration au sein d'une flotte hétérogène et hautement dynamique d'objets mobiles communicants autonomes." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0205/document.
Full textWe call autonomous systems, mobile and communicating objects which are able to perform several tasks without any human intervention. The overall cost (including price, weight and energy) of the payload required by some missions is sometimes too important to enable the entities to embed all the required capabilities (i.e. sensors and actuators). This is the reason why it is more suitable to spread all the capabilities among several entities. The team formed by those entities is called a swarm. It then becomes necessary to provide a discovery mechanism built into the swarm in order to enable its members to share their capabilities and to collaborate for achieving a global mission.This mechanism should perform task allocation as well as management of conflicts and failures which can occur at any moment on any entity of the swarm. In this thesis, we present a novel collaborative system which is called AMiRALE for heterogeneous swarms of autonomous mobile robots. Our system is fully distributed and relies only on asynchronous communications. We also present a novel tool called NEmu which enables to create virtual mobile networks with a complete control over the network topology, links and nodes properties. This tool is designed for performingrealistic experimentation on prototypes of network applications. Finally, we present experimental results on our collaborative system AMiRALE obtained through a park cleaning scenario which relies on an autonomous swarm of drones and specialized ground robots