Accuracy of bioimpedance equations for measuring body composition in a cohort of 2134 patients with obesity

Autor: Moise Coëffier, Mohamed El Machkouri, Clément L'Huillier, Vanessa Folope, Hélène Lelandais, Sébastien Grigioni, Pierre Déchelotte, Najate Achamrah

Publikováno v: Clinical Nutrition. 41:2013-2024

Measuring body composition is an important issue to phenotype patients with obesity and to follow the nutritional care efficiency. Bioelectrical Impedance Analysis (BIA) is a simple and rapid technique. However, validity of BIA in patients with obesi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5716e89d5f1d45965d89a9684968522
https://doi.org/10.1016/j.clnu.2022.07.032

Stable limits for Markov chains via the Principle of Conditioning

Autor: Mohamed El Machkouri, Dalibor Volný, Adam Jakubowski

Publikováno v: Stochastic Processes and their Applications. 130:1853-1878

We study limit theorems for partial sums of instantaneous functions of a homogeneous Markov chain on a general state space. The summands are heavy-tailed and the limits are stable distributions. The conditions imposed on the transition operator $P$ o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12feb0a91325cc32175751b495f2da78
https://doi.org/10.1016/j.spa.2019.06.002

Least squares estimator for non-ergodic Ornstein–Uhlenbeck processes driven by Gaussian processes

Autor: Youssef Ouknine, Khalifa Es-Sebaiy, Mohamed El Machkouri

Publikováno v: Journal of the Korean Statistical Society
Journal of the Korean Statistical Society, Elsevier, 2016, 45 (3), pp.329-341. ⟨10.1016/j.jkss.2015.12.001⟩

The statistical analysis for equations driven by fractional Gaussian process (fGp) is relatively recent. The development of stochastic calculus with respect to the fGp allowed to study such models. In the present paper we consider the drift parameter

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33f8856a1ba26f2bbac69141b7c915bc
https://doi.org/10.1016/j.jkss.2015.12.001

Orthomartingale-coboundary decomposition for stationary random fields

Autor: Mohamed El Machkouri, Davide Giraudo

Publikováno v: Stochastics and Dynamics
Stochastics and Dynamics, World Scientific Publishing, 2016, 16 (05), pp.1650017. ⟨10.1142/S0219493716500179⟩
Stochastics and Dynamics, World Scientific Publishing, 2016, 16 (5)

We provide a new projective condition for a stationary real random field indexed by the lattice [Formula: see text] to be well approximated by an orthomartingale in the sense of Cairoli (1969). Our main result can be viewed as a multidimensional vers

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b58f3ff3e3aa29f94cf13bb412f03ad9
https://hal.archives-ouvertes.fr/hal-02375089

Kahane–Khintchine inequalities and functional central limit theorem for stationary random fields

Autor: Mohamed El Machkouri

Publikováno v: Stochastic Processes and their Applications
Stochastic Processes and their Applications, Elsevier, 2002, 102 (2), pp.285-299. ⟨10.1016/S0304-4149(02)00178-3⟩

We establish new Kahane–Khintchine inequalities in Orlicz spaces induced by exponential Young functions for stationary real random fields which are bounded or satisfy some finite exponential moment condition. Next, we give sufficient conditions for

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c3c8f6ba9dd20c0c6878c1a34294390
https://doi.org/10.1016/s0304-4149(02)00178-3