Jean-Christophe Toussaint

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A CONCEPTUAL FRAMEWORK FOR MODELLING SPATIAL RELATIONS ELISEO CLEMENTINI To Margherita, Gaia and Diana " Tanto gentile e tanto onesta pare la donna mia quand'ella altrui saluta ch'ogne lingua deven tremando muta e li occhi no l'ardiscon di guardare " (Dante Alighieri, Vita Nova) iii ABSTRACT The models of spatial relations have stimulated great interest(More)
Thin film alloys with perpendicular anisotropy were studied using Lorentz transmission electron microscopy (LTEM). This work focuses on the configuration of domain walls and demonstrates the suitability and accuracy of LTEM for the magnetic characterization of perpendicular magnetic anisotropy materials. Thin films of chemically ordered (L1(0)) FePd alloys(More)
  • Présentée Devant, Thomas Doki-Thonon, Rapporteur H P Evans, Président P Montmitonnet, Examinateur G Morales Espejel, Rapporteur J Summers Professeur +46 others
  • 2013
This thesis is devoted to the study of spinning contacts located in bearing between the roller-end and the ring flange. The main direction of the lubricant flow may change when the contact is subjected to skew. This complex kinematics influences the contact behaviour. A dual experimental-numerical approach is proposed to study this problem. The Tribogyr(More)
To my parents, my siblings and all my teachers! A mes parents, mes frères et soeurs et tous mes enseignants! Acknowledgements I would like to express my gratitude for the continued guidance, support and the confidence my supervisors, Dr. Maryvonne Miquel and Dr. Anne Tchounikine, showed in me. Their ideas, suggestion and repetitive corrections played a(More)
Cette thèse est accessible à l'adresse : avec le temps puisqu'on note une réduction conséquente de l'effet après 2 mois. Abstract 7 Abstract In a general manner, the present thesis focuses on the so-called smart materials, especially on electroactive polymers and / or electrostrictive. These materials exhibit a strong electro-mechanical coupling and are(More)
v RESUME L'effet magnétoélectrique (ME) se traduit par la possibilité d'induire une magnétisation à l'aide d'un champ électrique (effet direct) ou celle d'induire une polarisation électrique à l'aide d'un champ magnétique (effet inverse). Les composites laminés qui possèdent de grands coefficients ME ont généré beaucoup d'intérêt dans le domaine des(More)
—We investigated with XMCD-PEEM magnetic imaging the magnetization reversal processes of Néel caps inside Bloch walls in self-assembled, micron-sized Fe(110) dots with flux-closure magnetic state. In most cases the magnetic-dependent processes are symmetric in field, as expected. However, some dots show pronounced asymmetric behaviors. Micromagnetic(More)
The bottleneck of micromagnetic simulations is the computation of the long-ranged magnetostatic fields. This can be tackled on regular N-node grids with Fast Fourier Transforms in time N log N , whereas the geometrically more versatile finite element methods (FEM) are bounded to N 4/3 in the best case. We report the implementation of a Non-uniform Fast(More)
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