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- W2947396387 abstract "The thesis focuses on the numerical simulation of a biomathematical, multiscale model explaining the phenomenon of selection within the population of ovarian follicles, and grounded on a cellular basis. The PDE model consists of a large dimension hyperbolic quasilinear system governing the evolution of cell density functions for a cohort of follicles (around twenty in practice).The equations are coupled in a nonlocal way by control terms involving moments of the solution, defined on either the mesoscopic or macroscopic scale.Three chapters of the thesis, presented in the form of articles, develop the method used to simulate the model numerically. The numerical code is implemented on a parallel architecture. PDEs are discretized with a Finite Volume scheme on an adaptive mesh driven by a multiresolution analysis. Flux discontinuities, at the interfaces between different cellular states, require a specific treatment to be compatible with the high order numerical scheme and mesh refinement.A chapter of the thesis is devoted to the calibration method, which translates the biological knowledge into constraints on the parameters and model outputs. The multiscale character is crucial, since parameters are used at the microscopic level in the equations governing the evolution of the density of cells within each follicle, whereas quantitative biological data are rather available at the mesoscopic and macroscopic levels.The last chapter of the thesis focuses on the analysis of computational performances of the parallel code, based on statistical methods inspired from the field of uncertainty quantification." @default.
- W2947396387 created "2019-06-07" @default.
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- W2947396387 date "2014-10-10" @default.
- W2947396387 modified "2023-09-27" @default.
- W2947396387 title "Numerical study of multiscale non conservative transport equations modeling cell kinetics" @default.
- W2947396387 hasPublicationYear "2014" @default.
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