Publications

• Article dans une revue

Classification of the Locally Strongly Convex Centroaffine Hypersurfaces with Parallel Cubic Form

Xiuxiu Cheng, Zejun Hu, Marilena Moruz

In this paper, we study locally strongly convex centroaffine hypersurfaces with parallel cubic form with respect to the Levi–Civita connection of the centroaffine metric. As the main result, we obtain a complete classification of such centroaffine hypersurfaces. The result of this paper is a…

Results in mathematics = Resultate der Mathematik, 2017, 72 (1-2), pp.419-469. ⟨10.1007/s00025-017-0651-2⟩. ⟨hal-03233934⟩

• Article dans une revue

Optimization of PZT ceramic IDT sensors for health monitoring of structures

Rafatou Takpara, Marc Duquennoy, Mohammadi Ouaftouh, Christian Courtois, Frédéric Jenot, Mohamed Rguiti

Surface acoustic waves (SAW) are particularly suited to effectively monitoring and characterizing structural surfaces (condition of the surface, coating, thin layer, micro-cracks…) as their energy is localized on the surface, within approximately one wavelength. Conventionally, in non-destructive…

Ultrasonics, 2017, 79, pp.96-104. ⟨10.1016/j.ultras.2017.04.007⟩. ⟨hal-03080493⟩

• Article dans une revue

Molecular Chemistry and Engineering of Boron-Modified Polyorganosilazanes as New Processable and Functional SiBCN Precursors

Antoine Viard, Diane Fonblanc, Marion Schmidt, Abhijeet Lale, Chrystelle Salameh, Anne Soleilhavoup, Mélanie Wynn, Philippe Champagne, Sophie Cerneaux, Florence Babonneau, Georges Chollon, Fabrice Rossignol, Christel Gervais, Samuel Bernard

A series of boron-modified polyorganosilazanes was synthesized from a poly(vinylmethyl-co-methyl)silazane and controlled amounts of borane dimethyl sulfide. The role of the chemistry behind their synthesis has been studied in detail by using solid-state NMR spectroscopy, FTIR spectroscopy, and…

Chemistry - A European Journal, 2017, 23 (38), pp.9076 - 9090. ⟨10.1002/chem.201700623⟩. ⟨hal-01670294⟩

• Article dans une revue

Stability analysis of switched linear systems on non-uniform time domain with unstable subsystems

Fatima Zohra Taousser, Michael Defoort, Mohamed Djemai, Serge Nicaise

In finite element computations, the choice of the mesh is crucial to obtain accurate solutions. In order to evaluate the quality of the mesh, a posteriori error estimators can be used. In this paper, we develop residual-based error estimators for magnetostatic problems with both classical…

IFAC-PapersOnLine, 2017, 50 (1), pp.14873-14878. ⟨10.1016/j.ifacol.2017.08.2524⟩. ⟨hal-03164172⟩

• Article dans une revue

Chimie des matériaux et énergie

Jean-Christophe Hornez, Franck Bouchart, Philippe Champagne, Christian Courtois, Claudine Follet-Houttemane, Cyrille Albert-Mercier, Anne Leriche, Maryse Bacquet, Fanny Bonnet, Valérie Briois, Clément Colin, Rénald David, Stéphanie Degoutin, L. Delevoye, Rachel Desfeux, Anthony Ferri, David Fournier, Carole Lamonier, Christine Lancelot, Thierry Lasuye, Thierry Loiseau, Joël Lyskawa, Bernard Martel, Christian Masquelier, Olivier Mentré, Mathieu Morcrette, André Mortreux, Lucie Plais, S. Saitzek, Adlane Sayede, Nicolas Tabary, Rose-Noëlle Vannier, Marc Visseaux, Christophe Volkringer, Patrice Woisel

L'Actualité Chimique, 2017, 420, pp.29-38. ⟨hal-03077747⟩

• Article dans une revue

A high dielectric composite for energy storage application

S. Aboubakr, A. Hajjaji, Mohamed Rguiti, K. Benkhouja, Christian Courtois

Piezoelectric composites are widely studied due to their good performances. Several kinds of these composites have been developed for sensing and actuation applications, however, most of them are not used for energy storage devices, because of their low dielectric properties. In this research work…

International Journal of Hydrogen Energy, 2017, 42 (30), pp.19504-19511. ⟨10.1016/j.ijhydene.2017.06.045⟩. ⟨hal-04280955⟩

• Article dans une revue

On Leafwise Meromorphic Functions with Prescribed Poles

Aziz El Kacimi Alaoui

Let F be a complex foliation by Riemann surfaces defined by a trivial (in the differentiable sense) fibration π:M⟶B but for which the complex structure on each fibre π−1(t) may depend on t. Let σ:B⟶M be a section of π contained in a F-relatively compact subset of M. We prove: for any F-relatively…

Boletim da Sociedade Brasileira de Matemática / Bulletin of the Brazilian Mathematical Society, 2017, 48 (2), pp.261-282. ⟨10.1007/s00574-016-0020-x⟩. ⟨hal-03148589⟩

• Article dans une revue

On optimal control of forward backward stochastic differential equations

Fouzia Baghery, Nabil Khelfallah, B. Mezerdi, Isabelle Turpin

We consider a control problem where the system is driven by a decoupled as well as a coupled forward-backward stochastic differential equation. We prove the existence of an optimal control in the class of relaxed controls, which are measure-valued processes, generalizing the usual strict controls.…

Afrika Matematika, 2017, 28 (7-8), pp.1075-1092. ⟨10.1007/s13370-017-0504-x⟩. ⟨hal-03149997⟩

• Article dans une revue

Multiplicity results in the non-coercive case for an elliptic problem with critical growth in the gradient

Colette De Coster, Louis Jeanjean

We consider the boundary value problem (Pλ) −∆u = λc(x)u + µ(x)|∇u| 2 + h(x), u ∈ H1 0 (Ω) ∩ L ∞(Ω), where Ω ⊂ R N , N ≥ 3 is a bounded domain with smooth boundary. It is assumed that c 0, c, h belong to L p (Ω) for some p > N. Also µ ∈ L∞(Ω) and µ ≥ µ1 > 0 for some µ1 ∈ R. It is known that…

Journal of Differential Equations, 2017, 262 (10), pp.5231 - 5270. ⟨10.1016/j.jde.2017.01.022⟩. ⟨hal-01755985⟩

• Article dans une revue

Canal surfaces as Bézier curves using mass points

Lionel Garnier, Jean-Paul Becar, Lucie Druoton

The paper aims to connect the Bézier curves domain to another known as the Minkowski–Lorentz space for CAGD purposes. The paper details these connections. It provides new algorithms for surface representations and surfaces joining. Some $G^1$-blends between canal surfaces illustrate the results…

Computer Aided Geometric Design, 2017, 54, pp.15 - 34. ⟨10.1016/j.cagd.2017.04.003⟩. ⟨hal-01562030⟩