ESPCI web site
PMMH’s weekly seminar is held every Friday at 11 am (map)
Stéphane Perrard
Etienne Reyssat
Virgile Thiévenaz
PMMH
BARRE CASSAN
BAT A 1ER ETAGE CASE 18
7 QUAI SAINT BERNARD
75005 PARIS
France
Tel : (33) 1 40 79 45 22
Séminaire PMMH - Natsuhiko Yoshinaga (Tohoku University)
Model Selection of PDE for Pattern Forming Systems
Partial differential equations (PDE) have been widely used to reproduce
patterns in nature, and to give an insight on the mechanism underlying
pattern formation. Although enormous number of PDE models have been
proposed, they rely on pre-request knowledge of physical laws and
symmetries, and one has difficulties to develop a model to reproduce a
given desired pattern. Here we show the order parameters extracting
symmetries of a pattern together with Bayesian model selection
successfully estimate parameters in a model as well as the best model to
make the target pattern. We apply our method two-dimensional and
three-dimensional nontrivial patterns, namely quasi-crystal with
twelve-fold symmetry and double gyroid structure reproduced by using a
family of generalised Swift-Hohenberg equations. Our method not only
estimates the parameters to reproduce these patterns, but gives an
insight on the appropriate number of length scales hidden in the patterns.
The audience is composed of people with rather heterogeneous backgrounds including specialists in solids, fluids, granular flows, statistical physics... so the idea is to keep your talk understandable by people not necessarily working in your field... The seminar time slot runs from 11am to noon so the best is to make the talk last around 45 minutes to leave some time for discussion.
- Séminaires ESPCI-ENS de biophysique
- Séminaires du Département de Physique de l’ENS
- Séminaires du Laboratoire d’Hydrodynamique de l’X
- Séminaire de Mécanique d’Orsay (page web FAST)
- Séminaire de Mécanique d’Orsay (page web LIMSI)
- Séminaire de Mécanique des Fluides de l’Institut Jean le Rond d’Alembert
- Séminaires du laboratoire MSC, Paris VII
- Séminaires Gulliver
Link to cofee seminar (internal, every Thursday)
