Publications

• Article dans une revue

Geodesic Active Contour under Geometrical Conditions: theory and 3D applications

Carole Le Guyader, Christian Gout

In this paper, we propose a new scheme for both detection of boundaries and fitting of geometrical data based on a geometrical partial differential equation, which allows a rigorous mathematical analysis. The model is a geodesic-active-contour-based model, in which we are trying to determine a…

Numerical Algorithms, 2008, 48 (1-3), pp.105-133. ⟨10.1007/s11075-008-9174-y⟩. ⟨hal-00372706⟩

• Article dans une revue

Multivariate approximation : theory and applications. An overview

Carl De Boor, Christian Gout, Angela Kunoth, Christophe Rabut

The fourth conference on “Multivariate Approximation: Theory and Applications” was held April 26 to May 01, 2007 at Cancun, Mexico. This introductory paper describes the main topics in Approximation Theory presented during this conference, ranging from theoretical aspects to numerous applications.

Numerical Algorithms, 2008, 48 (1-3), pp.1-9. ⟨10.1007/s11075-008-9190-y⟩. ⟨hal-00634604⟩

• Article dans une revue

Generalized Fast Marching Method: Applications to Image Segmentation

Nicolas Forcadel, Carole Le Guyader, Christian Gout

In this paper, we propose a segmentation method based on the generalized fast marching method (GFMM) developed by Carlini et al. (submitted). The classical fast marching method (FMM) is a very efficient method for front evolution problems with normal velocity (see also Epstein and Gage, The curve…

Numerical Algorithms, 2008, 48 (1-3), pp.189-211. ⟨10.1007/s11075-008-9183-x⟩. ⟨hal-00372740⟩

• Article dans une revue

Biological and physico-chemical assessment of hydroxyapatite (HA) with different porosity

Jean-Christophe Hornez, F Chai, F Monchau, N Blanchemain, Michel Descamps, H F Hildebrand

HA with specific internal porosities was loaded with different antibiotics (ATBs) and then tested on its microbiological effectiveness. The HA purity was controlled with X-ray diffraction, IR and Raman spectrometry. Varying the sintering temperature and/or adding graphite and PMMA as porogenous…

Biomolecular Engineering, 2007, 24, pp.505 - 509. ⟨10.1016/j.bioeng.2007.08.015⟩. ⟨hal-03280931⟩

• Article dans une revue

Manufacture of macroporous β-tricalcium phosphate bioceramics

Michel Descamps, T Duhoo, F Monchau, J Lu, P Hardouin, Jean-Christophe Hornez, Anne Leriche

␤-Tricalcium phosphate (␤-TCP) macroporous ceramics were produced by a new manufacturing procedure. An organic skeleton constituted of polymethylmethacrylate balls (PMMA) is carried by a chemical forming treatment. This treatment consists to establish a connection between PMMA balls by a chemical…

Journal of the European Ceramic Society, 2007, 28, pp.149 - 157. ⟨10.1016/j.jeurceramsoc.2007.05.025⟩. ⟨hal-03280924⟩

• Article dans une revue

In vitro culture of large bone substitutes in a new bioreactor: importance of the flow direction

V Olivier, Ph Hivart, Michel Descamps, Pierre Hardouin

New biomaterials combined with osteogenic cells are now being developed as an alternative to autogeneous bone grafts when the skeletal defect reaches a critical size. Yet, the size issue appears to be a key obstacle in the development of bone tissue engineering. Bioreactors are needed to allow the…

Biomedical Materials, 2007, 2 (3), pp.174-180. ⟨10.1088/1748-6041/2/3/002⟩. ⟨hal-04310090⟩

• Article dans une revue

A posteriori error estimation for the dual mixed finite element method for the $p$-Laplacian in a polygonal domain

Emmanuel Creusé, Mohamed Farhloul, Luc Paquet

For the discrete solution of the dual mixed formulation for the $p$-Laplace equation, we define two residues $R$ and $r$. Then we bound the norm of the errors on the two unknowns in terms of the norms of these two residues. Afterwards, we bound the norms of these two residues by functions of two…

Computer Methods in Applied Mechanics and Engineering, 2007, 196 (25-28), pp.2570-2582. ⟨10.1016/j.cma.2006.11.023⟩. ⟨hal-00768644⟩

• Article dans une revue

A discontinuous Galerkin method on refined meshes for the 2D time-harmonic Maxwell equations in composite materials

Stephanie Lohrengel, Serge Nicaise

In this paper, a discontinuous Galerkin method for the two-dimensional time-harmonic Maxwell equations in composite materials is presented. The divergence constraint is taken into account by a regularized variational formulation and the tangential and normal jumps of the discrete solution at the…

Journal of Computational and Applied Mathematics, 2007, 206 (1), pp.27-54. ⟨10.1016/j.cam.2006.05.020⟩. ⟨hal-00210426⟩

• Article dans une revue

Raw materials dossier, Dossier matières premières

Didier Bernache-Assollant, Jean-Pierre Bonnet, C. Carry, C. Chaput., Thierry Chartier, J.-L. Chermant, B. Durand, S. Garrault, N. Herlin, J.-M. Lamerant, Y. Leconte, S. Le Gallet, Anne Leriche, J.-C. Niepce, J. Poirier, F. Rebillat, F. Valdivieso

Industrie céramique et verrière (L’), 2007, 1012, pp.40-73. ⟨hal-00293786⟩

• Article dans une revue

La saga des matériaux: classes et mise en forme des céramiques, The materials saga: sintering

Didier Bernache-Assollant, Jean-Pierre Bonnet, Claude Paul Carry, Christophe Chaput, Thierry Chartier, Jean-Louis Chermant, Bernard Durand, Sandrine Garrault, Nathalie Herlin-Boime, Jean Michel Lamerant, Yann Leconte, Sophie Le Gallet, Anne Leriche, Jean-Claude Niepce, Jacques Poirier, Francis Rebillat, Françoise Valdivieso

In ICV no 1010, we inaugurated our materials saga with the classification and shaping of ceramics. This second and short chapter deals with sintering and its different forms: non reactive or reactive sintering, natural or pressure sintering as well as two essential parameters: density and porosity.

Industrie céramique et verrière (L’), 2007, 1011, pp.40-74. ⟨hal-00293788⟩