22 research outputs found
RESSOURCES MEDICALES SUR INTERNET (EXEMPLES EN PEDIATRIE)
PARIS7-Xavier Bichat (751182101) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF
Contr么le de surveillance DCE 2014 de la masse d'eau c么ti猫re Pertuis Breton FRGC53 et de la masse d'eau de transition FRGT30 Estuaire du Lay. Rapport final partie 1 : macrofaune invert茅br茅e benthique subtidale et intertidale.
Contr么le de surveillance DCE 2014 de la masse d鈥檈au c么ti猫re FRGC53 Pertuis Breton et de la masse d鈥檈au de transition FRGT30 Estuaire du Lay. Partie 2 : suivis stationnels et surfaciques des herbiers de Zostera (Zosterella) noltei
Contr么le de surveillance DCE 2018 de la masse d'eau c么ti猫re "FRGC53 - Pertuis Breton" et de la masse d'eau de transition "FRGT30 - Estuaire du Lay" pour les herbiers de Zostera (Zosterella) noltei Hornemann : rapport final.
Recommended from our members
Competitive dynamics of two erosion patterns around a cylinder
We investigate experimentally the local erosion of a granular bed near a
fixed vertical cylinder that emerges from the bed. The onset of erosion arising
at the base of the cylinder and usually ascribed to the wrapping horseshoe
vortex is determined and rationalized by a flow contraction effect. We report a
new erosion pattern visible downstream of the cylinder that consists of two
side-by-side elongated holes. This pattern is observed for flow regimes close
to the horseshoe scour onset, whose growth usually inhibits its spatiotemporal
development
Food presentation and energy intake in a feeding laboratory study of subjects with binge eating disorder
Contr么le de surveillance DCE 2014 de la masse d'eau c么ti猫re Pertuis Charentais FRFC02. Rapport final partie 2 : macrofaune invert茅br茅e benthique de la station d'appui Boyardville
Accuracy Assessment of Coastal Topography derived from UAV Images
To monitor coastal environments, Unmanned Aerial Vehicle (UAV) is a low-cost and easy to use solution to enable data acquisition with high temporal frequency and spatial resolution. Compared to Light Detection And Ranging (LiDAR) or Terrestrial Laser Scanning (TLS), this solution produces Digital Surface Model (DSM) with a similar accuracy. To evaluate the DSM accuracy on a coastal environment, a campaign was carried out with a flying wing (eBee) combined with a digital camera. Using the Photoscan software and the photogrammetry process (Structure From Motion algorithm), a DSM and an orthomosaic were produced. Compared to GNSS surveys, the DSM accuracy is estimated. Two parameters are tested: the influence of the methodology (number and distribution of Ground Control Points, GCPs) and the influence of spatial image resolution (4.6 cm vs 2 cm). The results show that this solution is able to reproduce the topography of a coastal area with a high vertical accuracy (< 10 cm). The georeferencing of the DSM require a homogeneous distribution and a large number of GCPs. The accuracy is correlated with the number of GCPs (use 19 GCPs instead of 10 allows to reduce the difference of 4 cm); the required accuracy should be dependant of the research problematic. Last, in this particular environment, the presence of very small water surfaces on the sand bank does not allow to improve the accuracy when the spatial resolution of images is decreased