I am a postdoctoral researcher in Unité de Mathématiques Pures et Appliquées (UMPA), CNRS UMR 5669 - ENS Lyon under the supervision of Hélène Leman, Hélène Morlon and Amaury Lambert, currently working on multiscale approaches in population genetics.


The core of my research activity is the deterministic/stochastic modelling and study of complex phenomena from biology and life sciences. More precisely, I am interested in:
  • Population genetics;
  • Metabolic heterogeneity in cell populations;
  • Statistical tests of independence on point processes;
  • (Meta)Population dynamics;
  • Optimal control in epidemiology;

    • Address

    UMPA CNRS UMR 5669,
    ENS de Lyon
    46 Allée d'Italie
    69364 Lyon, France

    email

    josue.tchouanti_fotso@ens-lyon.fr

    profile_image

    Main research topics

  • Individual based models and scaling limits
  • Partial and Ordinary Differential Equations
  • Slow/fast stochastic dynamics
  • Cell metabolism
  • Biological neural networks and synchronization
  • Mean-Field models
  • Hawkes processes
  • Optimal control of epidemiological systems

    • Publications

    Preprints


  • Y. Fotso Fotso, J. Tchouanti, J. Ntahomvukiye and S. Bowong. Bifurcation analysis and optimal control of an infection age-structured epidemic model with vaccination and treatment. Preprint HAL-04170982
  • J. Tchouanti, E. Löcherbach, P. Reynaud-Bouret and E. Tanré. Separation rates for the detection of synchronization of interacting point processes in a mean field frame: application to neuroscience. Preprint arXiv:2402.01919.


    International journals with review


  • J. Tchouanti. Well posedness and stochastic derivation of a diffusion-growth-fragmentation equation in a chemostat. Stoch. PDE: Anal. Comp. (2023). DOI: 10.1007/s40072-023-00288-8 [see arXiv]
  • M. Barthe, J. Tchouanti, P. H. Gomes, C. Bideaux, D. Lestrade, C. Graham, J.P. Steyer, S. Méléard, J. Harmand, N. Gorret, M. Cocaign-Bousquet, B. Enjalbert. Availability of the Molecular Switch XylR Controls Phenotypic Heterogeneity and Lag Duration during Escherichia coli Adaptation from Glucose to Xylose. mBio 11 (6) e02938-20 (2020); DOI: 10.1128/mBio.02938-20 [see HAL]
  • C. Graham, J. Harmand, S. Méléard, J. Tchouanti. Bacterial Metabolic Heterogeneity: from Stochastic to Deterministic Models. Mathematical Biosciences and Engineering 17 (5), 5120-5133 (2020); DOI: 10.3934/mbe.2020276 [see arXiv]



    • Conference papers


  • F. Dupeuble, A. Rapaport, T. Guilmeau, J. Tchouanti, B. Enjalbert, C. Bideaux, J. Philippe Steyer, A. Feddaoui-Papin, J. Harmand. Deterministic models to decipher the lag phase duration during diauxie. IFAC-PapersOnLine 55(20):481-486. 10th Vienna International Conference on Mathematical Modelling (2022). DOI: 10.1016/j.ifacol.2022.09.141 [see HAL]



    • PhD Thesis


  • J. Tchouanti. Deterministic and stochastic approaches to modelling bacterial metabolic heterogeneity. PhD thesis, École polytechnique, 2021.
    [see HAL]

    • education

    2018 - 2021

    PhD in Applied Mathematics

    École Polytechnique

    Palaiseau, France

    My thesis was supervised by Sylvie Méléard, Carl Graham and Jérôme Harmand. It was about developing mathematical models for a better comprehension of bacterial metabolic heterogeneity (see PhD THESIS).

    2017 - 2018

    Master's degree in Mathematics

    Félix Houphouêt-Boigny University

    Abidjan, Ivory Coast

    Probability, statistics and their applications in life-sciences (see M2PSAV).

    2013 - 2017

    Master 1 in Mathematics

    university of Dschang

    Dschang, Cameroon

    I did this Master in Mathematical analysis after a licence in Mathematics and Computer-Science in the same university.

    Find my detailed CV (french) here.

    Scientific networks

  • 2021-2026: Chair "Mathematical Modeling and Biodiversity" (dir. Sylvie Méléard). [see link]
  • 2020-2023: ANR JANUS: Control and optimization of metabolic transitions (dir. Brice Enjalbert).