Publications

Life Sciences

A Langevin-Based Model with Moving Posturographic Target to Quantify Postural Control.

Falls are a major concern of public health, particularly for older adults, as the consequences of falls include serious injuries and death. Therefore, the understanding and evaluation of postural control is considered key, as its deterioration is an…

Alice Nicolaï, Myrto Limnios, Alain Trouvé, Julien Audiffren

IEEE Transactions on Neural Systems and Rehabilitation Engineering - 2021

Probability

DISCRETE STICKY COUPLING OF FUNCTIONAL AUTOREGRESSIVE PROCESSES

In this paper, we provide bounds in various metrics between the successive iterates of two functional autoregressive processes with isotropic Gaussian noise of the form $Y_{k+1}=T_\gamma(Y_k)+\sqrt{\gamma\sigma^2}Z_{k+1}$ and $\tilde Y_{k+1}=\tilde…

Alain Durmus, Andreas Eberle, Aurélien Enfroy, Arnaud Guillin, Pierre Monmarché

Computer Vision and Pattern Recognition

Robust Rational Polynomial Camera Modelling for SAR and Pushbroom Imaging

The Rational Polynomial Camera (RPC) model can be used to describe a variety of image acquisition systems in remote sensing, notably optical and Synthetic Aperture Radar (SAR) sensors. RPC functions relate 3D to 2D coordinates and vice versa,…

Roland Akiki, Roger Marí, Carlo de Franchis, Jean-Michel Morel, Gabriele Facciolo

Image Processing

A COMPARATIVE STUDY OF DERAMPING TECHNIQUES FOR SENTINEL-1 TOPS IN THE CONTEXT OF INTERFEROMETRY

In this study, we compare the different spectral centering methods (referred to as deramping) for the Sentinel-1 images acquired with the TOPSAR method, in the context of interferometry. The deramping is a necessary step prior to image interpolation…

Roland Akiki, Raphaël Grandin, Carlo de Franchis, Gabriele Facciolo, Jean-Michel Morel

Mathematics

Regularizing effect and decay results for a parabolic problem with repulsive superlinear first order terms

Martina Magliocca

RACSAM. Real Academia de Ciencias. Serie A, Matemáticas - Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A, Matemáticas - 2021

Information Theory

Calcul Haute Performance : Caractérisation d’architectures et optimisation d’applications pour les futures générations de supercalculateurs

Information systems and High-Performance Computing (HPC) infrastructures play an active role in the improvement of scientific knowledge and the evolution of our societies. The field of HPC is expanding rapidly and users need increasingly powerful…

Jean Pourroy

Spectral Theory

A Spectral Approach of Multi-Scale Metamodelling Applied to Acoustic Propagation

There exists many numerical methods to simulate wave propagation through complex media with a very good precision. However, taking into account the fluctuations of the propagation medium necessitates a statistical approach implying a prohibitive…

Alexandre Goupy

Life Sciences

Endocannabinoid Gene × Gene Interaction Association to Alcohol Use Disorder in Two Adolescent Cohorts

Genetic markers of the endocannabinoid system have been linked to a variety of addiction-related behaviors that extend beyond cannabis use. In the current study we investigate the relationship between endocannabinoid (eCB) genetic markers and…

Laurent Elkrief, Sean Spinney, Daniel E Vosberg, Tobias Banaschewski, Arun L W Bokde, Erin Burke Quinlan, Sylvane Desrivières, Herta Flor, Hugh Garavan, Penny Gowland, Andreas Heinz, Rüdiger Brühl, Jean-Luc Martinot, Marie-Laure Paillère Martinot, Frauke Nees, Dimitri Papadopoulos Orfanos, Luise Poustka, Sarah Hohmann, Sabina Millenet, Juliane H Fröhner, Michael N Smolka, Henrik Walter, Robert Whelan, Gunter Schumann, Zdenka Pausova, Tomáš Paus, Guillaume Huguet, Patricia Conrod

Frontiers in Psychiatry - 2021

Statistics

Penalised least square in sparse setting with convex penalty and non gaussian errors

This paper considers the penalized least squares estimators with convex penalties or regularisation norms. We provide sparsity oracles inequalities for the prediction error for a general convex penalty and for the particular cases of Lasso and Group…

Doualeh Abdillahi-Ali, Nourddine Azzaoui, Arnaud Guillin, Guillaume Le Mailloux, Tomoko Matsui

Acta Mathematica Scientia - 2021

Mathematical Physics

Explicit breather solution of the nonlinear Schrödinger equation

We present a one-line closed form expression for the three-parameter breather of the nonlinear Schrödinger equation. This provides an analytic proof of the time period doubling observed in experiments. The experimental check that some pulses…

R. Conte