Publications

• Article dans une revue

Regularity and a priori error analysis of a Ventcel problem in polyhedral domains

Serge Nicaise, Hengguang Li, Anna L. Mazzucato

We consider the regularity of a mixed boundary value problem for the Laplace operator on a polyhedral domain, where Ventcel boundary conditions are imposed on one face of the polyhedron and Dirichlet boundary conditions are imposed on the complement of that face in the boundary. We establish…

Mathematical Methods in the Applied Sciences, 2017, 40 (5), ⟨10.1002/mma.4083⟩. ⟨hal-01332720v3⟩

• Article dans une revue

Surfaces in a pseudo-sphere with harmonic or 1-type pseudo-spherical Gauss map.

B. Bektas, J. van Der Veken, Luc Vrancken

We give a complete classification of Riemannian and Lorentzian surfaces of arbitrary codimension in a pseudo-sphere whose pseudo-spherical Gauss maps are of 1-type or, in particular, harmonic. In some cases a concrete global classification is obtained, while in other cases the solutions are…

Ann. Global Anal. Geom., 2017, 52, pp.45-55. ⟨10.1007/s10455-017-9548-2⟩. ⟨hal-03233877⟩

• Article dans une revue

Convergence and stability analyses of hierarchic models of dissipative second order evolution equations

Serge Nicaise

We perform some hierarchical analyses of dissipative systems. For that purpose, we first propose a general abstract setting, prove a convergence result and discuss some stability properties. This abstract setting is then illustrated by significant examples of damped (acoustic) wave equations for…

Collectanea Mathematica, 2017, 68 (3), pp.433-462. ⟨10.1007/s13348-017-0192-8⟩. ⟨hal-03152027⟩

• Pré-publication, Document de travail

Time-asymptotic propagation of approximate solutions of Schrödinger equations with both potential and initial condition in Fourier-frequency bands

Florent Dewez

In this paper, we consider the Schrödinger equation in one space-dimension with potential. We start by proving that this equation is well-posed in H1(R) if the potential belongs to W1,∞(R), and we provide a representation of the solution as a series, called Dyson-Phillips series, by using semigroup…

2017. ⟨hal-03142532⟩

• Poster de conférence

Morphology and phase control of titanium dioxide via hydrothermal synthesis with respect to the composition of the precursor solution

Mélanie Wynn, Philippe Champagne, Samuel Bernard, Philippe Miele, Anne Leriche

Annual Meeting du BCerS, Dec 2016, Mol, Belgium. ⟨hal-02881256⟩

• Thèse

Theoretical and numerical study of the stability of some distributed systems with dynamic boundary control, Étude théorique et numérique de la stabilité de certains systèmes distribués avec contrôle frontière de type dynamique

Mohamad Ali Sammoury

This thesis is devoted to the study of the stabilization of some distributed systems with dynamic boundary control. First, we consider the stabilization of the Rayleigh beam equation with only one dynamic boundary control moment or force. We show that the system is not uniformly (exponentially)…, Cette thèse est consacrée à l’étude de la stabilisation de certains systèmes distribués avec contrôle frontière de type dynamique. Nous considérons, d’abord, la stabilisation de l’équation de la poutre de Rayleigh avec un seul contrôle frontière dynamique moment ou force. Nous montrons que le…

General Mathematics [math.GM]. Université de Valenciennes et du Hainaut-Cambresis; Université Libanaise, 2016. English. ⟨NNT : 2016VALE0032⟩. ⟨tel-01523446⟩

• Article dans une revue

Preparation and characterization of anorthite and hydroxyapatite from Algerian Kaolin and natural phosphate

H. Belhouchet, F. Chouia, M. Hamidouche, Anne Leriche

Different composite materials were prepared using kaolin (DD2) and natural phosphate. Several mixtures were used by varying the kaolin content from 20 to 80 mass %. All powders were mixed and grounded by ball milling and then pressed in cylindrical form. Finally, the green samples were sintered…

Journal of Thermal Analysis and Calorimetry, 2016, 126 (3), pp.1045-1057. ⟨10.1007/s10973-016-5655-8⟩. ⟨hal-03117357⟩

• Article dans une revue

Geometric Design: Visualization and Representation

Gudrun Albrecht, Daniel Gonsor, Stephen Mann, Thomas J Peters

SIAM News, 2016, 49 (10). ⟨hal-03228093⟩

• Communication dans un congrès

Mass points, Bézier curves and conics : a survey

Jean-Paul Becar, Lionel Garnier

29ème journées de l’association française d’informatique graphique, Nov 2016, Grenoble, France. ⟨hal-03163456⟩

• Communication dans un congrès

Functor calculus as a new tool in algebra: commutators, actions, modules and linearisation

Manfred Hartl

Métodos Categóricos y Homotópicos en Álgebra, Geometría y Topología, Nov 2016, Logroño, Spain. ⟨hal-03181259⟩