Une analyse de l'orthogonal least squares par la propriété d'isométrie restreinte en présence de signaux décroissants

Autor: Bosse, Jonathan

L’orthogonal least squares (OLS) est un algorithme glouton très répandu pour l’approximation ou la reconstruction de signaux parcimonieux. Nous abordons ici le problème des conditions suffisantes de reconstruction exacte du support d’un sign

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______166::16d214b4890dad544b775bd2c1df414f
https://hal.archives-ouvertes.fr/hal-03846439

Frequency derivative of Rayleigh wave phase velocity for fundamental mode dispersion inversion: parametric study and experimental application

Autor: Wang, Ao, Leparoux, Donatienne, Abraham, Odile, Le Feuvre, Mathieu

Publikováno v: Geophysical Journal International
Geophysical Journal International, Oxford University Press (OUP), 2021, 224 (1), pp. 649-668. ⟨10.1093/gji/ggaa417⟩

Monitoring the small variations of a medium is increasingly important in subsurface geophysics due to climate change. Classical seismic surface wave dispersion methods are limited to quantitative estimations of these small variations when the variati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::d58551d987985b26931e257c886d67a6
https://hal.archives-ouvertes.fr/hal-03081526/document

Méthodes numériques adjointes et inverses couplant mesures et modèles physiques au service des enjeux de la ville et des territoires

Autor: Julien Waeytens

Publikováno v: Instrumentations et Détecteurs [physics.ins-det]. Université Gustave Eiffel, 2020
HAL

Managing the city and the territories is a complex task requiring expertise in a broad range of fields. During the 21st century, the city and the territories must face major environmental and social challenges such as water scarcity, global warming,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::615b348abf1c16a631a07fe575b9075c
https://hal.archives-ouvertes.fr/tel-03119725v2/document

Imagerie différentielle en ondes de surface sismiques et ultrasonores pour le monitoring de structures anthropiques et du proche sous-sol environnant

Autor: Wang, Ao

Publikováno v: Geophysics [physics.geo-ph]. Université de Nantes, 2020. English

The first meters of the underground media, the Critical Zone, involve many human activities. It is also the site of disturbances due to climate change through variations in the level of the water table, hydric and mechanical modifications that increa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2592::18ee3fea4ac53722b941d1edba48f5a6
https://hal.archives-ouvertes.fr/tel-03080535/file/doc00032204.pdf

High resolution adaptive optics-assisted retinal imaging using structured illumination

Autor: Lai-Tim, Yann

Publikováno v: Sciences de l'ingénieur [physics]. UNIVERSITE PSL, 2020. Français

Early detection of retinal pathologies in humans requires non-invasive in vivo imaging of retinal tissue at the cellular level. Yet, observation of the retina from the outside suffers from the poor optical quality of the eye, the ocular movements, li

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______212::a00ab46abfd110471e2de7dace32025a
https://hal.archives-ouvertes.fr/tel-03160415/file/DOTA20156.1614072366.pdf