Search results for "Réseaux"
showing 10 items of 101 documents
ArchaeDyn -Atelier 3 Dynamiques de circulation et de consommation de produits bruts et manufacturés : recherches méthodologiques
2019
Ce document est destiné à être publié dans la collection des Cahiers de la MSHE, éditée par les Presses universitaires de Franche-Comté
An improvement of NFC-SEC with signed exchanges for an e-prescription-based application
2013
International audience; In the context of an aging population, drug intake can be a potential source of errors leading to death in some cases. Almost all of these errors are unintentional and come from incorrect prescriptions, unsuitable dosages for the patient or incompatibility with other treatments. To limit these risks which are especially important in the elderly or pre-dependency, we propose a secure system for drug treatment through the NFC (Near Field Communication) contact-less communication technology. The proposed system provides security mechanisms such as integrity, authentication, encryption and non-repudiation. To ensure this security, an extension of the international standa…
Optimization of flat area coverage under connectivity constraint in wireless sensor networks
2022
A wireless sensor network consists of a set of small autonomous units that interact via a network built by their communication modules. They observe their environment, capture information, then manage this information according to their computing and/or storage capacity. To effectively accomplish their task(s), they need to cover as much of the area of interest as possible. It is therefore essential to quantify the quality of their coverage. In this thesis, we therefore seek to best cover an area of interest, with a precise number of sensors. While taking into account the possible overlaps between sensors, we first deploy in a zone of regular dimensions and evaluate the exact coverage using…
Les effets des liens personnels interconseils sur la performance de l'entreprise : une analyse comparée entre France et Allemagne
2010
Obgleich das Thema „personelle Unternehmensverflechtungen über den Aufsichtsrat“ re-gelmäßig im Fokus öffentlicher Diskussionen steht – wobei in der Regel eine negative Wirkung der Mandatekumulation auf die Kontrolleffizienz des Überwachungsgremiums und damit letztlich auf die Unternehmensperformance unterstellt wird –, zeigt eine Analyse der empirischen Litera-tur, dass insbesondere in Kontinentaleuropa eine klare Schlussfolgerung hinsichtlich der Wirkung von Mehrfachmandaten auf die Wertschöpfung für die Aktionäre nicht möglich ist. Ursache für die starke Divergenz der Ergebnisse scheint sowohl die Verwendung verschiedener theoretischer Erklärungsmodelle als auch die Mobilisierung untersc…
Towards better privacy preservation by detecting personal events in photos shared within online social networks
2015
Today, social networking has considerably changed why people are taking pictures all the time everywhere they go. More than 500 million photos are uploaded and shared every day, along with more than 200 hours of videos every minute. More particularly, with the ubiquity of smartphones, social network users are now taking photos of events in their lives, travels, experiences, etc. and instantly uploading them online. Such public data sharing puts at risk the users’ privacy and expose them to a surveillance that is growing at a very rapid rate. Furthermore, new techniques are used today to extract publicly shared data and combine it with other data in ways never before thought possible. Howeve…
Impact of the community structure on the dynamics of complex networks
2023
Networks are everywhere. We encounter them daily in our lives, through our social interactions, how we come up with decisions in our brain, to having phone calls, conducting financial transactions, and traveling from one place to another. Individual actions are influenced by their environment, which is, in turn, influenced by the network's topology. Notably, individuals may change their actions, ideas, or opinions to conform to the aspirations of a particular social group. In the same vein, the spread of a virus can take a certain course if the network's structure induces specific pathways for expansion. In such scenarios, communities substantially impact the evolution of the dynamics. They…
Cartulaire-rouleau de l'abbaye du Cateau, relatif au bois de Fontaine-au-Bois
2023
Topology Management in wireless sensor networks
2020
Wireless sensor networking is ingratiating itself into almost every area of human endeavors. Its drivers include its usages, improvements in microelectronics and manufacturing techniques. The network is made up of multiple tiny sensor nodes deployed in the area to be sensed, with nodes having processing, communicating, and sensing capabilities that enable them to perform their function collaboratively. Nodes sense events and transmit their data to the sink directly or through intermediate nodes acting as relay.Despite all the tremendous advances that have been made on this technology over the past few years, energy has not kept pace. This is based mostly on the fact that battery is its main…
Les territoires urbains polycentriques en Europe : de l'organisation économique à la gouvernance
2006
La présente recherche a pour objectif d'étudier les nouvelles centralités au sein des territoires urbains en Europe, de mener une analyse comparative des modalités d'organisation économique et institutionnelle de ces territoires afin d'en dégager des orientations de recherches prospectives sur l'interface : Europe Polycentrique – Recomposition des centralités - Gouvernance urbaine. Cinq pays sont privilégiés : l'Allemagne, l'Espagne, la France, la Grande-Bretagne et l'Italie. Trois grilles d'analyse sont utilisées pour synthétiser les recherches : 1/ la forme "intra" ou "inter" urbaine des polarités économiques 2/ Les caractéristiques fonctionnelles des polarités 3/ les modes de gouvernance…
Les territoires urbains polycentriques en Europe : de l'organisation économique à la gouvernance
2006
La présente recherche a pour objectif d'étudier les nouvelles centralités au sein des territoires urbains en Europe, de mener une analyse comparative des modalités d'organisation économique et institutionnelle de ces territoires afin d'en dégager des orientations de recherches prospectives sur l'interface : Europe Polycentrique – Recomposition des centralités - Gouvernance urbaine. Cinq pays sont privilégiés : l'Allemagne, l'Espagne, la France, la Grande-Bretagne et l'Italie. Trois grilles d'analyse sont utilisées pour synthétiser les recherches : 1/ la forme "intra" ou "inter" urbaine des polarités économiques 2/ Les caractéristiques fonctionnelles des polarités 3/ les modes de gouvernance…