Publicaciones

• PROCEEDINGS

Analysis and geometry

Ali Baklouti, Aziz El Kacimi Alaoui, Sadok Kallel, Nordine Mir

MIMS-GGTM (Tunis ; 2014), Mar 2014, Tunis, Tunisia. 127, Springer, pp.VIII-266, 2015, Springer proceedings in mathematics & statistics, 978-3-319-17442-6. ⟨hal-03234788⟩

• ART

Approximation of the two-dimensional Dirichlet problem by continuous and discrete problems on one-dimensional networks

Maryse Bourlard-Jospin, Serge Nicaise, Juliette Venel

We show that the solution of the two-dimensional Dirichlet problem set in a plane domain is the limit of the solutions of similar problems set on a sequence of one-dimensional networks as their size goes to zero. Roughly speaking this means that a membrane can be seen as the limit of rackets made...

Confluentes Mathematici, 2015, 7 (1), pp.13-33. ⟨10.5802/cml.16⟩. ⟨hal-03135676⟩

• COMM

Thick mesh reconstruction from scattered cloud

Thierry Bay, R. Raffin

International Conference on Computer Graphics, Visualization, Computer Vision and Image Processing, 2015, Las Palmas de Gran Canarias, Spain. pp.187-196. ⟨hal-03131117⟩

• ART

Dispersive effects and high frequency behaviour for the Schr¨odinger equation in star-shaped networks

Felix Ali Mehmeti, Kaïs Ammari, Serge Nicaise

We prove the time decay estimates L1(R)→L∞(R), where R is an infinite star-shaped network, for the Schrödinger group eit(−d2dx2+V) for real-valued potentials V satisfying some regularity and decay assumptions. Further we show that the solution for initial conditions with a lower cutoff frequency...

Portugaliae Mathematica, 2015, 72 (4), pp.309-355. ⟨10.4171/PM/1970⟩. ⟨hal-03138323⟩

• THESE

Study of the stability of a certain systems of coupled wave equations and of the Rayleigh beam equation on bounded and unbounded domains, Étude de la stabilité de quelques systèmes d'équations des ondes couplées sur des domaines bornés et non bornés

Maya Bassam

The thesis is driven mainly on indirect stabilization system of two coupled wave equations and the boundary stabilization of Rayleigh beam equation. In the case of stabilization of a coupled wave equations, the Control is introduced into the system directly on the edge of the field of a single..., La thèse est portée essentiellement sur la stabilisation indirecte d’un système de deux équations des ondes couplées et sur la stabilisation frontière de poutre de Rayleigh.Dans le cas de la stabilisation d’un système d’équations d’onde couplées, le contrôle est introduit dans le système...

General Mathematics [math.GM]. Université de Valenciennes et du Hainaut-Cambresis; Université Libanaise, 2014. English. ⟨NNT : 2014VALE0034⟩. ⟨tel-01171615⟩

• ART

Ferroelectrics, piezoelectric, and Impedance spectroscopy characterizations of CuO doped (Na_0.52K_0.44)(Nb_0.9Sb_0.06)O₃–0.04LiTaO₃ lead free ceramics

M. Saidi, K. Khalfaoui, Ahcène Chaouchi, Sophie d'Astorg, Mohamed Rguiti, Christian Courtois

CuO was used to reduce the sintering temperature of (Na0.52 K0.44)(Nb0.9 Sb0.06)O3 –0.04LiTaO3 (NKNSLT) piezoelectric ceramics. XRD analysis reveals the formation of single phase perovskite structure. SEM has been used to investigate the grain morphology of the material. Impedance plots have been...

• ART

Stability analysis of a class of switched linear systems on non-uniform time domains

Fatima Zohra Taousser, Michael Defoort, Mohamed Djemai

This paper deals with the stability analysis of a class of switched linear systems on non-uniform time domains. The considered class consists of a set of linear continuous-time and linear discrete-time subsystems. First, some conditions are derived to guarantee the exponential stability of this...

Systems & Control Letters, 2014, 74, pp.24-31. ⟨10.1016/j.sysconle.2014.09.012⟩. ⟨hal-03184540⟩

• COMM

Derivatives in Noncommutative calculus and deformation property of quantum algebras.

Dimitri Gurevich

The aim of my talk is twofold. First, I introduce analogs of (partial) derivatives on certain Noncommutative algebras, including some enveloping algebras and their ”braided versions”. Second, I discuss deformation property of some quantum algebras and show that contrary to a commonly held view the...

Algebra, Deformations and Quantum groups Conference, Dec 2014, Marseille, France. ⟨hal-03155761⟩

• ART

Remarks on the uniqueness for quasilinear elliptic equations with quadratic growth conditions

David Arcoya, Colette De Coster, Louis Jeanjean, Kazunaga Tanaka

In this note we present some uniqueness and comparison results for a class of problem of the form (0.1) −Lu = H(x, u, ∇u) + h(x), u ∈ H1 0 (Ω) ∩ L∞(Ω), where Ω ⊂ R N , N ≥ 2 is a bounded domain, L is a general elliptic second order linear operator with bounded coefficients and H is allowed to have...

Journal of Mathematical Analysis and Applications, 2014, 420 (1), pp.772-780. ⟨10.1016/j.jmaa.2014.06.007⟩. ⟨hal-03138844⟩

• COMM

Elaboration et caractérisation de composites piézoélectriques PU/PZT pour la récupération de l'énergie électrique à partir de vibrations mécaniques

Christian Courtois, Rafatou Takpara

3ème Rencontre Industrie-Recherche ‘Les céramiques techniques dans les applications électroniques’, Nov 2014, Vallauris Golfe-Juan, France. ⟨hal-03639123⟩