Bayesian non-parametric modeling by mixture of Kibble-Pólya tree to detect Low-Activity uranium contamination

Autor: Hanan Arahmane, Jonathan Dumazert, Eric Barat, Thomas Dautremer, Frédérick Carrel, Nicolas Dufour, Maugan Michel

Publikováno v: Results in Physics, Vol 64, Iss , Pp 107874- (2024)

Accurate detection of low-level radioactivity is critical for decommissioning projects in nuclear facilities, particularly in the design of radiation monitoring systems with a low false alarm rate. Utilizing a non-parametric Bayesian continuous proba

Externí odkaz: https://doaj.org/article/fc3cdfac665044d0bb18e3c2bf0354b3

An Overview of Opioid Prescription Patterns among Non-Opioid Users Following Emergency Department Admission

Autor: Miriam Zeino, Romain Léguillon, Pauline Brevet, Baptiste Gerard, Catherine Chenailler, Johanna Raymond, Lucas Bibaut, Sophie Pouplin, Luc Marie Joly, Rémi Varin, Eric Barat

Publikováno v: Healthcare, Vol 12, Iss 11, p 1138 (2024)

The evolving landscape of opioid prescription practices necessitates a comprehensive understanding of emerging patterns, particularly among new opioid users discharged from emergency departments. This study delves into the intricate realm of opioid u

Externí odkaz: https://doaj.org/article/84f562a4145d4a1dbbecbe3d9784a7f7

Reconstruction, analysis and interpretation of posterior probability distributions of PET images, using the posterior bootstrap

Autor: Simon Stute, Marina Filipovic, Thomas Dautremer, Eric Barat, Claude Comtat

Publikováno v: Physics in Medicine and Biology
Physics in Medicine and Biology, IOP Publishing, 2021, 66 (12), pp.125018. ⟨10.1088/1361-6560/ac06e1⟩
Physics in Medicine and Biology, 2021, 66 (12), pp.125018. ⟨10.1088/1361-6560/ac06e1⟩

The uncertainty of reconstructed PET images remains difficult to assess and to interpret for the use in diagnostic and quantification tasks. Here we provide (1) an easy-to-use methodology for uncertainty assessment for almost any Bayesian model in PE

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed99274262dc3dd5a00d89106eaa1233
https://hal.archives-ouvertes.fr/hal-03321853

Measurement of low-activity uranium contamination by gamma-ray spectrometry for nuclear decommissioning

Autor: Frederick Carrel, Nicolas Dufour, Adrien Sari, Thomas Dautremer, Jonathan Dumazert, G.H.V. Bertrand, Eric Barat, F. Laine

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2020, 951, pp.162976. ⟨10.1016/j.nima.2019.162976⟩
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2020, 951, pp.162976. ⟨10.1016/j.nima.2019.162976⟩
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2020, 951, pp.162976-. ⟨10.1016/j.nima.2019.162976⟩

International audience; Nuclear decommissioning takes places after dismantling, and consists of studying the possible presence of any residual contamination. To do so, every surface inside the facility must be radiologically characterized, and every

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ddc3ad99ee7b4d6c2781a95ecd1ed90b
https://hal.science/hal-03488632

Some Aspects of Symmetric Gamma Process Mixtures

Autor: Eric Barat, Zacharie Naulet

Publikováno v: Bayesian Analysis
Bayesian Analysis, 2018, 13, pp.703-720. ⟨10.1214/17-BA1058⟩
Bayesian Anal. 13, no. 3 (2018), 703-720
Bayesian Analysis, International Society for Bayesian Analysis, 2018, 13, pp.703-720. ⟨10.1214/17-BA1058⟩

International audience; In this article, we present some specific aspects of symmetric Gamma process mixtures for use in regression models. First we propose a new Gibbs sampler for simulating the posterior. The algorithm is tested on two examples, th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46dc057d74444922678922542f3a47e2
https://cea.hal.science/cea-01838175