The Numerical Modelling Group (Groupe Modélisation Numérique, GMN), founded on 3 May 2011, was created by the school in the hope that researchers working at AgroSup Dijon could re-group their skills and problems when they reach the stage of digital modelling, now that this is a nearly inevitable part of all research work.
It is first and foremost a cross-disciplinary project. This group could, at the end of its new four-year contract, turn into a more concentrated and institutional structure, while remaining of a cross-disciplinary nature. This type of structure is, we think, not found in establishments similar to ours.
To understand the framework of the group's goals, which begin by insisting on the importance of tools and of sharing them:
The subjects that could be worked on are varied, so at first the group can only be structured around common mathematical and digital tools and methods. An information-sharing system will be created, this information:
Christine Fant : "Automatic definition of odours in the processing of olfactometric data" ("Définition automatique d'aires odorantes dans le traitement de données olfactométriques")
Date to be determined in 2012.
Seminar by Mostapha Adimy director of research at INRIA Grenoble
"Modelling of cellular dynamics" ("Modélisation de la dynamique cellulaire")
Abstract: In this talk we present some models describing the production and regulation of blood cells in bone marrow (hematopoiesis). We consider mathematical models of hyperbolic type: structured. These are partial differential equations in which the main variable depends on several "structures": time, but also age, size, maturity, etc.. These equations are treated in two different ways. One is a direct approach which is to analyse them without modifications, but the boundaries make this difficult to study. A second approach, to get round this, is to integrate them in relation to structured variables, using the method of characteristics, and bring it back to a system of equations with delay-type proliferation quiescence. We are interested in the properties of these equations, and in particular the stability of their solutions and oscillatory behaviour. We are also interested in models of hematopoiesis taking into account the action of external factors in the bone marrow (growth factors) that can act on apoptosis (programmed cell death), differentiation and / or reintroduction the quiescent phase to the phase of division. Finally, we develop some concrete examples to illustrate these approaches: the study of the periodic physiological haematopoiesis, the study of chronic myeloid leukemia, the study of acute myelogenous leukemia, and the study of feedback controls and self-renewal of progenitors for erythropoiesis (red blood cell lineage).
Seminar by Sébastien Curet-Ploquin, from ONIRIS Nantes:
"Microwave Heating of Food Products: Numerical and Experimental Investigations"
Abstract : "This presentation begins with a review of heating by microwave technologies applied to the sector of agri-food industries. In order to optimize existing procedures we need to predict and control the interaction between microwaves and substances. To do this, models predicting the behavior of food products subjected to microwaves will be presented. These models, validated experimentally, allow us to predict temperature distribution within processed products while under treatment."
Talk by Paul Molin and Eric Ferret:
"Eye Movements: An Engineering Approach" (Mouvements de l'œil, une approche automaticienne)
See the presentation made during the day, in French, PDF format (637 Ko)
Talk by Rachid Sabre:
"Processing statistics and its uses in the fields of agronomy and agri-food" ("La statistique des processus, et ses applications aux domaines agronomique et agroalimentaire")
Talk by Frédéric Cointault:
"Modelling sprayed droplets" ("Modélisation des gouttelettes en pulvérisation")
See the French presentation made during the GMN seminar at AgroSup Dijon, in PDF format (5 Mb)
Talk by Eric Ferret and Cyril IACONELLI:
"Utilisation de Comsol Multiphysics pour la réalisation de modèles numériques : une aide au calcul et à l’interprétation de phénomènes physiques complexes"
See the French presentation made during the day, in PDF format (1.8 Mo)
Talk by Ludovic Journaux :
Seminar by Hervé Rigneault
Hervé Rigneault is the CNRS Research director and head of the MOSAIC team at the "Institut Fresnel de Marseille"
Alain Breuvart, Rémy Cachon, Thierry Castel, Frédéric Cointault, Emmanuel Denimal, Christine Fant, Eric Ferret, Alexandre Gaudry, Christelle Gée, Gawain Jones, Ludovic Journaux, Thomas Karbowiak, Ambroise Marin, Jean-Noël Paoli, Paul Molin, Jean-Marie Perrier-Cornet, Laurence Pottier, Rachid Sabre, Jean-Claude Simon, Dominique Valentin, Sylvain Villette.
Paul Molin and Rachid Sabre have been designated group leaders.