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911 results on '"Delacourt, C"'

211. TOWARDS TIME-SERIES PROCESSING OF VHR SATELLITE IMAGES FOR SURFACE DEFORMATION DETECTON AND MEASUREMENTS.

Author

Malet, J. P., Stumpf, A., and Delacourt, C.

Subjects
TIME series analysis, REMOTE-sensing images
Abstract

The increasing fleet of VHR optical satellites (e.g. Pléiades, Spot 6/7, WorldView-3) offers new opportunities for the monitoring of surface deformation resulting from gravitational (e.g. glaciers, landslides) or tectonic forces (coseismic slip). Image correlation techniques have been developed and successfully employed in many geoscientific studies to quantify horizontal surface deformation at sub-pixel precision. The analysis of time-series, however, has received less attention in this context and there is still a lack of techniques that fully exploit archived image time-series and the increasing flux of incoming data. This study targets the development of an image correlation processing chain that relies on multiple pair-wise matching to exploit the redundancy of deformation measurements recorded at different view angles and over multiple time steps. The proposed processing chain is based on a hierarchical image correlation scheme that readily uses parallel processing. Since pair-wise matching can be performed independently the distribution of individual tasks is straightforward and yields to significant reductions of the overall runtime scaling with the available HPC infrastructure. We find that it is more convenient to implement experimental analytical tasks in a high-level programming language (i.e. R) and explore the use of parallel programming to compensate for performance bottlenecks of the interpreted language. Preliminary comparisons against maps from domain expert suggest that the proposed methodology is suitable to eliminate false detections and, thereby, enhances the reliability of correlation-based detections of surface deformation. [ABSTRACT FROM AUTHOR]

Published
2015
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216. Éditorial

Author

de Blic, J., primary, Delacourt, C., additional, Delaisi, B., additional, Juchet, A., additional, Karila, C., additional, Marguet, C., additional, and Scheinmann, P., additional

Published
2006
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217. Caractéristiques de l’asthme léger : épidémiologie descriptive et nature de l’inflammation bronchique

Author

Chanez, P., primary, de Blic, J., additional, Delacourt, C., additional, Deschildre, A., additional, Devillier, P., additional, Didier, A., additional, Dusser, D., additional, Humbert, M., additional, Leroyer, C., additional, Marguet, C., additional, Martinat, Y., additional, Piquet, J., additional, Raherison, C., additional, Serrier, P., additional, Tillie-Leblond, I., additional, Tonnel, A.B., additional, and Tunon de Lara, M., additional

Published
2006
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229. La fibroscopie bronchique chez l’enfant

Author

Le Roux, P., primary, de Blic, J., additional, Albertini, M., additional, Bellon, G., additional, Body, G., additional, Brémont, F., additional, Caurier, B., additional, Chomienne, F., additional, Counil, F., additional, Dalphin, L., additional, David, V., additional, Delacourt, C., additional, Deneuville, E., additional, Derelle, J., additional, Deschildre, A., additional, Donato, L., additional, Dubus, J.C., additional, Fayon, M., additional, Garcia, J., additional, Heuzé, L., additional, Houzel, A., additional, Just, J., additional, Labbé, A., additional, Lesbros, D., additional, Mahraoui, C., additional, Malfroot, A., additional, Marguet, C., additional, Monrigal, P., additional, Pautard, J.C., additional, Pin, I., additional, Rayet, I., additional, Sardet, A., additional, Scalbert, M., additional, Siret, D., additional, and Troadec, C., additional

Published
2004
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248. Erratum à l’article « Recommandations sur l’utilisation des nouveaux outils diagnostiques étiologiques des infections respiratoires basses de l’enfant de plus de trois mois » [Arch. Pediatr. 21(4) (2014) 418–423]

Author

Dubus, J.-C., Delacourt, C., Marguet, C., Houdouin, V., Pouessel, G., Angoulvant, F., Brouard, J., Derelle, J., Fayon, M., Ferroni, A., Gangneux, J.-P., Hau, I., Le Bourgeois, M., Lorrot, M., Menotti, J., Nathan, N., Vabret, A., Wallet, F., Bonacorsi, S., Cohen, R., de Blic, J., Deschildre, A., Gandemer, V., Pin, I., Labbe, A., Le Roux, P., Martinot, A., and Rammaert, B.

Published
2014
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249. Determination of Transport Properties of Electrolyte With or Without Convection

Author

Delacourt, C. and Rabette, C.

Abstract

There is a variety of electrochemical methods to determine the transport properties of electrolytes. There are also different underlying hypotheses to derive transport equations that are used in these methods. In this work, we examine how the values of the transport properties determined with some of these methods are affected depending on whether convection is neglected in the Onsager-Stefan-Maxwell transport equations. In particular, we show that the values of the diffusion coefficient and the cation transference number that are determined from analyses of experimental data that ignore convection deviate from those that account for it. We exemplify our point using simulations. This work emphasizes that transport properties from the literature can be used in a mathematical model providing the underlying assumptions of the model are compatible with those used for their determination.

Published
2023
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