Publicaciones

• Article dans une revue

Source identification for the wave equation on graphs, Identification de sources pour l'équation des ondes sur des graphes

Sergei Avdonin, Serge Nicaise

We consider source identification problems for the wave equation on an interval and on trees. The main advantage of our approach is its locality. Our algorithm reduces essentially to the resolution of a linear integral Volterra equation of the second kind and is new even for an interval., Nous considérons un problème d'identification de sources pour l'équation des ondes sur un intervalle ou sur des arbres. L'avantage principal de notre approche est sa localité. Notre algorithme se réduit essentiellement à la résolution d'une équation intégrale de Volterra du...

Comptes Rendus de l'Académie des Sciences - Series III - Sciences de la Vie, 2014, 352 (11), pp.907-912. ⟨10.1016/j.crma.2014.09.008⟩. ⟨hal-03149902⟩

• Article dans une revue

Classical and Relaxor Ferroelectric Behavior of Titanate of Barium and Zirconium Ceramics

Amina Tachafine, A. Aoujgal, Mohamed Rguiti, M.P.F. Graca, L.C. Costa, Abdelkader Outzourhit, Jean-Claude Carru

BaZrxTi1-xO3 (BZT) (x = 0 to 1) and BaZr0.05Ti0.95-y(Zn1/3Nb2/3)yO3 (BZT(ZnNb)) (y = 0 to 0.1) ceramics were prepared by the conventional solid-solid reaction method. The structural, ferroelectric and dielectric properties of BZT ceramics were studied as well as the dielectric properties of the BZT...

Spectroscopy Letters : An International Journal for Rapid Communication, 2014, Special Issue: Fourth International Meeting on Dielectric Materials (IMDM'4) Marrakech, Morocco, May 29-31, 2013 Submit an article Journal homepage, 47 (5), pp.404-410. ⟨10.1080/00387010.2013.872664⟩. ⟨hal-03122804⟩

• Article dans une revue

A coupled Maxwell integrodifferential model for magnetization processes

Serge Nicaise, Fredi Tröltzsch

A mathematical model for instationary magnetization processes is considered, where the underlying spatial domain includes electrically conducting and nonconducting regions. The model accounts for the magnetic induction law that couples the given electrical voltage with the induced electrical...

Mathematical News / Mathematische Nachrichten, 2014, 287 (4), pp.432-452. ⟨10.1002/mana.201200206⟩. ⟨hal-03166126⟩

• Article dans une revue

Space-time residual-based a posteriori estimators for the A/Phi magneto dynamic formulation of the Maxwell system

Emmanuel Creusé, Serge Nicaise, Roberta Tittarelli

In this paper, an a posteriori residual error estimator is proposed for the A/Phi magnetodynamic Maxwell system given in its potential and space/time formulation and solved by a Finite Element method. The reliability as well as the e ciency of the estimator are established for several norms. Then,...

Computational Methods in Applied Mathematics, 2014, 14 (4), pp.429-460. ⟨10.1515/cmam-2014-0015⟩. ⟨hal-00921116⟩

• Article dans une revue

A priori error estimates for finite element methods for H(2;1)-elliptic equations

Thomas Apel, T. Flaig, Serge Nicaise, Thomas G Flaig

The convergence of finite element methods for linear elliptic boundary value problems of second and forth order is well understood. In this article, we introduce finite element approximations of some linear semi-elliptic boundary value problem of mixed order on a two-dimensional rectangular domain...

Numerical Functional Analysis and Optimization, 2014, 35 (2), pp.153-176. ⟨10.1080/01630563.2013.811600⟩. ⟨hal-03138800⟩

• Chapitre d'ouvrage

Exponential stability of the wave equation with memory and anti–damping/time delay

Fatiha Alabau-Boussouira, Serge Nicaise, Cristina Pignotti

Favini, Angelo; Fragnelli, Genni; Mininni, Rosa Maria. New Prospects in Direct, Inverse and Control Problems for Evolution Equations, Springer Verlag, pp.1-22, 2014, Springer INdAM Series. ⟨hal-03227639⟩

• Chapitre d'ouvrage

Problèmes d’évolution sur des multi-structures

Abderrahman Maghnouji

Introduction à quelques problèmes d’EDP : notes du groupe de travail de l’équipe EDP du Laboratoire de Mathématiques et leurs Applications de Valenciennes, Ed. Universitaires Européennes, pp.43-84, 2014, 9786131506833. ⟨hal-03142458⟩

• Article dans une revue

On Steinitz classes of nonabelian Galois extensions and p-ary cyclic Hamming codes

Maya Farhat, Bouchaïb Sodaïgui

Let k be a number field and Cl(k) its class group. Let Γ be a finite group. Let Rt(k,Γ) be the subset of Cl(k) consisting of those classes which are realizable as Steinitz classes of tamely ramified Galois extensions of k with Galois group isomorphic to Γ. Let p be a prime number. In the present...

Journal of Number Theory, 2014, 134, pp.93-108. ⟨10.1016/j.jnt.2013.07.003⟩. ⟨hal-03149645⟩

• Chapitre d'ouvrage

Existence, stability and controllability results for the heteregeneous Maxwell equations

Serge Nicaise

Introduction à quelques problèmes d’EDP : notes du groupe de travail de l’équipe EDP du Laboratoire de Mathématiques et leurs Applications de Valenciennes, Ed. Universitaires Européennes, pp.85-124, 2014, 9786131506833. ⟨hal-03142464⟩

• Chapitre d'ouvrage

Refined Mixed finite element method for the Laplace equation in a nonconvex polygonal domain

Luc Paquet

Introduction à quelques problèmes d’EDP : notes du groupe de travail de l’équipe EDP du Laboratoire de Mathématiques et leurs Applications de Valenciennes, Ed. Universitaires Européennes, pp.125-154, 2014, 9786131506833. ⟨hal-03142466⟩