Search results for " Computer science"
showing 10 items of 3983 documents
Geometric and numerical methods for the contrast and saturation problems in Magnetic Resonance Imaging
2018
Talk; International audience; In this talk, we present the time minimal control problem about the saturation of a pair of spins of the same species but with inhomogeneities on the applied RF-magnetic field, in relation with the contrast problem in MRI. We make a complete analysis based on geometric control to classify the optimal syntheses in the single spin case, to pave the road to analyze the case of two spins. This points out the phenomenon of bridge, which consists in linking two singular arcs by a bang arc to bypass some singularities of the singular extremal flow. In the case of two spins, the question about global optimality is more intricate. The Bocop software is used to determine…
Influential Spreaders in Modular Networks
2020
International audience; Hassouni (2019). Centrality in Complex Networks with overlapping Community structure. Scientific Reports, 9(1).
Exploring The Mesoscopic Structure Of The World Air Transportation Network
2020
International audience; Air transportation networks have been extensively studied in the network science literature. Researchers focus on airlines networks, national, regional, continental and worldwide networks using monoplex or multiplex approaches. Inspired by recent results on community-aware centrality measures [1], in this work, an extensive analysis of the macroscopic, mesoscopic and microscopic topological properties of the world air transportation network is performed. Based on the community structure uncovered by the Louvain algorithm, the original network is split into local components and global components. The local components are made of the communities by removing the interco…
14th International Conference on Signal-Image Technology & Internet-Based Systems, SITIS 2018
2018
International audience; The SITIS conference is dedicated to research on the technologies used to represent, share and process information in various forms, ranging from signal, image, and multimedia data to traditional structured data and semi-structured data found in the web.SITIS spans two inter-related research domains that increasingly play a key role in connecting systems across network centric environments to allow distributed computing and information sharing. SITIS 2018 aims to provide a forum for high quality presentations on research activities centered on the following main tracks.The track titled "Signal Image & Vision Technologies" (SIVT) focuses on recent developments in digi…
Ninth International Conference on Signal-Image Technology & Internet-Based Systems, SITIS 2013, Kyoto, Japan, December 2-5, 2013
2013
International audience
Gestion du niveau de service dans l’Internet des objets (IdO)
2020
International audience
A Community-Aware Backbone Extractor for Weighted Networks
2020
International audience
Complex Networks & Their Applications VII
2018
International audience
Searching for Influential Nodes in Modular Networks
2020
International audience
Localization of Hubs in Modular Networks
2020
International audience