• Jeudi 19 avril 2012, à 19h, Salon de lecture Jacques Kerchache, Musée du Quai Branly

Le Laboratoire ETIS de Cergy, Partnering Robotics, l’IRD, et le musée du quai Branly s’associent pour proposer une expérimentation culturelle innovante qui explore de nouvelles formes d’interactions apprenantes.

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• Jeudi 5 avril 2012,ENSEA, à 14h en salle 384

Séminaire MIDI : Konstantin Todorov,  Ecole centrale Paris, Aligning Heterogeneous and Complementary Multimedia Ontologies.

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• Mercredi 4 avril 2012, ENSEA à 14h en salle 384

 Séminaire MIDI : José Mennesson, Université de La Rochelle, De nouvelles approches fréquentielles pour la reconnaissance d'images couleur

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• Mardi 3 avril 2012, 16h30, Université de Cergy-Pontoise, site de St-Martin 1, 5ème étage 

Séminaire MIDI : Younes Zoulficar, CEA, Apport de différentes théories de l'incertain à la classification multi-label.

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• Mardi 27 mars, ENSEA, 14h en salle 384 

Séminaire MIDI : Hedi Tabia,Université Paris-Sud, Contributions à la recherche et la classification d’objets 3D.

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• Lundi 26 et 27 mars 2012 à l'Institut Henri-Poincaré (IHP)

The first edition of this workshop on information theory and coding for cooperative networks will be held in the magnificent city of Paris - France.
Organizers: Pablo Piantanida (Supélec), Iryna Andryianova (ETIS, ENSEA/UCP), Charly Poulliat (ENSEEIHT), Mohamed Kamoun (CEA).
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• Jeudi 22 mars 2012,ENSEA, 14 en salle 384

Séminaire MIDI : John Chaussard(Centre de Morphologie Mathématique, Mines ParisTech), Analyse de formes 3D à l'aide de squelettes.

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• Mardi 20 mars 2012, ENSEA, 15h, salle 318

Séminaire ASTRE : Mickael Cartron, Prise en compte de contraintes de fiabilité dans un projet de design d'un circuit manycore.
Mickael Cartron, CEA Saclay (LIST/DACLE/LFSE) Nano-INNOV

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• Jeudi 15 mars 2012, 14h à l'ENSEA, salle 384

Séminaire ETIS - MIDI : Hachem Ayasso, Approche bayésienne variationnelle et échantillonnage stochastique pour l'inférence bayésienne non-supervisée. Application en problème inverse en imagerie.

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• Jeudi 8 mars 2012, 14h à l'ENSEA, salle 384

Séminaire ETIS - MIDI : Hassen Drira, Calcul statistique sur les variétés de formes 3D pour la reconnaissance d'identité et d'expressions.

• Mardi 28 février 2012, 14h à l'ENSEA, salle 384

Séminaire ETIS - ICI : Arsenia Chorti, Practical Physical Layer Security Paradigms

Abstract
Physical layer security has re-emerged as a focal point of research in information and communication theory due to the importance of its potential applications. Building on the pioneering works of Wyner and Csiszár and Körner, it has been demonstrated that a noisy communication channel offers opportunities for perfectly secret information exchange as long as a legitimate user has a Signal-to-Noise Ratio advantage in respect to an eavesdropper. In particular, it has been shown that in situations where the eavesdropper’s channel is on average a degraded version of the main channel, a positive secrecy capacity can be guaranteed. These results have recently been extended for the wireless fading channel, Multiple- Input Multiple-Output and cooperative systems using jamming.
Nevertheless, physical layer security is still considered a primarily theoretical area as only few practical systems proposals have so far come to light. In this talk, we investigate physical layer security paradigms aiming to bridge some of the gap between theory and practice. Firstly, we explore alternatives to achieve perfect secrecy by exploiting topological and mobility asymmetries between a legitimate user and potential eavesdroppers. Then, we discuss optimal jamming interfering strategies for M-QAM and M-PSK systems. Finally, we conclude with investigating the idea of incorporating secrecy in the Quality of Service metrics of the network.

• Mardi 21 février 2012, 14h à ENSEA, salle 384

Séminaire ETIS : David Declercq, Multi-Relay Cooperative NB-LDPC coding with Non-Binary Repetition Codes

Abstract
In this talk, we present a system based on nonbinary Low-Density Parity-Check (LDPC) codes to communicate efficiently over the multiple-relay fading channels, with a simple joint decoding strategy at the receiver end. The particularity of our approach is to rely on non-binary LDPC codes at the source, coupled with multiplicative non-binary local codes at the relays, such that the joint decoding complexity is not increased compared to a system without relays, while preserving the coding gain brought by the re-encoding of the sequence at the relays. We show by simulations on simple configurations that this cooperative scheme is superior than other techniques proposed in the literature, and close to the Gaussian relay channel capacity, even at moderate codeword lengths.

•  Vendredi  6 janvier 2012, salle 318 à l'ENSEA à partir de 10h

Séminaire ECS-Lab : Stefano Di GENNARO, de l'Université de L'Aquila (Italie), Digital Self Triggered Robust Control of Nonlinear System

 Abstract:

In this seminar novel results are presented on self triggering control of nonlinear systems, subject to perturbations and actuation delays. First, considering an unperturbed nonlinear system with bounded actuation delays, we provide conditions that guarantee the existence of a self triggering control strategy stabilizing the closed-loop system. Then, considering parameter uncertainties, disturbances, and bounded actuation delays, we provide conditions guaranteeing the existence of a self triggering strategy, that keeps the state arbitrarily close to the equilibrium point. In both cases, we provide a methodology for the computation of the next execution time. We show on an example the relevant benefits obtained with this approach, in terms of energy consumption, with respect to control algorithms based on a constant sampling, with a sensible reduction of the average sampling time.

Séminaire ECS-Lab : Woihida AGGOUNE de l'ENSEA, On feedback stabilization of stochastic nonlinear systems with discrete and distributed delays

 Abstract :

In this paper, the problem of feedback stabilization of stochastic differential delay systems is considered. The systems under study are nonlinear, nonaffine and involve both discrete and distributed delays. By using a LaSalle-type theorem for stochastic systems, general conditions for stabilizing the closed-loop system with delays are obtained. In addition, stabilizing state feedback control laws are proposed.

• Mardi 3 janvier 2012, 11h salle du conseil ENSEA :

Séminaire ETIS : Claudia Marinica, L'apport des connaissances de l'utilisateur dans la fouille de règles d'association.

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• Mardi 6 décembre 2011: Université de Cergy-Pontoise, site de St-Martin, salle 562

Séminaire ETIS : Philippe-Henri Gosselin 

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•  Mercredi  5 octobre : ENSEA en Salle 318 à 10h  

Séminaire ECS-Lab à l'ENSEA : Identification de systèmes par des modèles d’ordre fractionnaire Par Mme.TOUNSIA  DJAMAH, de l’université de Tizi Ouzou

• Du 17 au 21 octobre 2011:

Congrès ISCDE - Ecole d'Automne - organisé par ECS- Lab EA3649 , le laboratoire CORIA de Rouen, le laboratoire CRAN de Nancy et le laboratoire IRCCyN de Nantes à Batz sur Mer