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Thierry
BAY

  • Bâtiment ISTV2
    Bureau B 0-2
  • +33 3 27 53 06 15

My work focuses on the construction of shapes, which I approach through two complementary methods: geometric modeling, which seeks the best representation of a given object, and topology optimization, which seeks the best shape for a given function. In both cases, the result must be faithful to what it represents and suited to what it must accomplish, while remaining regular enough to be used afterwards, whether for computation or for manufacturing.

The first line of work concerns the approximation of curves and surfaces. The goal is to build, from measurement data, mathematical representations that are both faithful to the data and regular. I am particularly interested in adaptive methods, which adjust the complexity of the model to that of the object being represented, and in representations subject to geometric constraints, which are essential when the resulting representation is to be used downstream.

The second line of work concerns topology optimization, a design method that lets computation determine the shape of a structure rather than choosing it beforehand. One starts from an available volume and an allowed amount of material, specifies what the structure must do and what loads it must withstand, and the optimization indicates where to place the material. I develop this method and apply it to energy harvesting with piezoelectric materials, that is, the conversion into electricity of part of the mechanical energy dissipated under our footsteps and under vehicle wheels.

Fonctions actuelles

    In research group

  • 09/2013 :
    Researcher in the " Modélisation – Simulation – Aléa" team.
    My work is related to the folowing topics:
    • Geometric modeling for curves and surfaces fitting.
    • Calculation of trajectories in 3D printing.
    • Topological optimization of 3D objects.

    • In laboratory

  • 09/2013 :

    Member in the " Modélisation – Simulation – Aléa " team.


    • National

  • 09/2013 :
    • Membre du Groupe de Travail en Modélisation Géométrique (GTMG).
    • Membre de l'Association Française d'Informatique Graphique (AFIG).
  • Membre de l'Association Française d'Informatique Graphiqiue (AFIG).

Diplômes universitaires

  • 2012 :
    PhD in Aix-Marseille University (AMU)
    Title: Modeling of thick and closed surfaces: application to pelvic organs.
  • 2008 :
    INSA Engineer, specialized in Applied Mathematics.

Valorisations industrielles

    Others

  • 2016 :

    Prestation de services pour la Société Mécartisan :

    • Conception et modélisation paramétrique de formes 3D.
    • Développement de la partie Visualisation 3D du logiciel Metalfox.

Others

  • 2014 :
    Activités de vulgarisation scientifique en 2014 :

  • Conférence dans le cadre de la manifestation Math.En.Jeans, Les Mathématiques pour la Chirurgie Opératoire (UVHC,  20 février 2014).
  • 2015 :
    Activités de vulgarisation scientifique en 2015 :

  • Conférence dans le cadre de la manifestation Fête de la Science. Le climat de la Terre : comment le modéliser ? (IUT de Valenciennes - Antenne de Maubeuge,  8-9 octobre 2015).
  • 2016 :
    Activités de vulgarisation scientifique en 2016 :

  • Animation sur le cycle de vie de populations animales dans le cadre de la manifestation Fête de la Science.  (IUT de Valenciennes - Antenne de Maubeuge, 2016).

  • Animation pour des classes de primaire sur les modèles proies/prédateurs dans le cadre de 'inauguration du Campus des Métiers (Technopôle Transalley de l'UVHC, 2016).
  • 2017 :
    Activités de vulgarisation scientifique en 2017 :

  • Référent scientifique Maison pour la Science. Journées d'Initiation à l'Algorithmique et à la Robotique pour des enseignants du primaire et du secondaire sur des robots à destination de jeunes enfants. Eclairage scientifique sur les liens entre la programmation 3D et la recherche actuelle (Avesnois, février et mai 2017).
  • 2018 :
    Organisation d'événements en 2018 :

  • Mise en place d'Escape Games pour des enfants d'école primaire dans le cadre de la Semaine des Maths (IUT de Valenciennes - Antenne de Maubeuge,  mars 2018).

Current teaching

  • I teach in the Computer Science Department of IUT de Maubeuge (Université Polytechnique Hauts-de-France), across all three years of the Bachelor of Technology (BUT) in Computer Science. I cover the whole of the programme's mathematical curriculum — discrete mathematics, graph theory, probability and statistics, numerical methods, optimisation and automata theory — as well as, in the final year, multimedia programming and 3D and virtual reality engines.

    I supervise a number of project-based learning units (SAÉ) from the first to the sixth semester, together with the third-year mathematical modelling projects. The latter, by way of illustration, are run entirely as projects: each group takes a topic from end to end, from a problem stated in plain language through to the program itself and the interpretation of its results — genetic algorithms, RSA encryption, queueing theory, image processing, energy minimisation, aircraft route planning, and others.

    Part of my teaching work concerns assessment itself. I have developed tools for the automated generation of examination papers, as well as question banks for remedial teaching at the start of the first year, where the wide disparity in students' mathematical backgrounds is the main difficulty. The place of generative AI in students' work is the subject of an explicit policy there, which differs according to the type of work submitted.

Educational responsability

  • Director of Studies of the Computer Science Department at IUT de Maubeuge

Educational responsability

  • Administrateur provisoire du département informatique pour l'IUT de Valenciennes

For a full list of my publications, see: https://cv.hal.science/thierry-bay