131 citations
- Centre National de la Recherche ScientifiqueFR7 papers
- Franche-Comté Électronique Mécanique Thermique et Optique - Sciences et TechnologiesFR5 papers
- Laboratoire de Mathématiques Blaise PascalFR3 papers
- Laboratoire de Mathématiques d'OrsayFR3 papers
- University of Illinois Urbana-ChampaignUS2 papers
- Applied Mathematics (United States)US1 paper
- Cerro Tololo Inter-American ObservatoryCL1 paper
- École Nationale Supérieure de Mécanique et des MicrotechniquesFR1 paper
- École PolytechniqueFR1 paper
- Griffith ObservatoryUS1 paper
- Leiden UniversityNL1 paper
- Mouloud Mammeri University of Tizi-OuzouDZ1 paper
13 papers · 1 filter
A watermarking algorithm satisfying topological chaos properties
Jacques M. Bahi, Christophe Guyeux
A new watermarking algorithm is given, it is based on the so-called chaotic iterations and on the choice of some coefficients which are deduced from the description of the carrier…
The topology of chaotic iterations
Jacques M. Bahi, Christophe Guyeux
Chaotic iterations have been introduced on the one hand by Chazan, Mi- ranker [6] and Miellou [10] in a numerical analysis context, and on the other hand by Robert [12] and Pellegr…
Chaotic iterations and topological chaos
Jacques M. Bahi, Christophe Guyeux
Chaotic iterations have been introduced on the one hand by Chazan, Miranker [5] and Miellou [9] in a numerical analysis context, and on the other hand by Robert [11] and Pellegrin…
Well-posedness results for triply nonlinear degenerate parabolic equations
Boris Andreianov, Mostafa Bendahmane, Kenneth K. Karlsen +1
We study the well-posedness of triply nonlinear degenerate elliptic-parabolic-hyperbolic problem $$ b(u)_t - {\rm div} \tilde{\mathfrak a}(u,\nablaϕ(u))+ψ(u)=f, \quad u|_{t=0}=u_0…
Composition law for polarizers
J. Lages, R. Giust, J. -M. Vigoureux
The polarization process when polarizers act on an optical field is studied. We give examples for two kinds of polarizers. The first kind presents an anisotropic absorption - as in…
Measurement of fundamental thermal noise limit in a cryogenic sapphire frequency standard using bimodal maser oscillations
Karim Benmessai, Daniel Lloyd Creedon, Michael Edmund Tobar +3
We report observations of the Schawlow-Townes noise limit in a cryogenic sapphire secondary frequency standard. The effect causes a fundamental limit to the frequency stability, an…