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Academic literature on the topic 'Échantillonnage systématique'
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Journal articles on the topic "Échantillonnage systématique"
Chatenet, P., J. Haury, M. Botineau, and F. Picaud. "Impact de pollutions ponctuelles sur les phytocénoses des rivières acides à neutres du Limousin (Massif Central, France)." Revue des sciences de l'eau 15, no. 1 (April 12, 2005): 397–410. http://dx.doi.org/10.7202/705461ar.
Full textA Afi, Abderrahman, Ahmed Achhal El Kadmiri, Abdelmalek Benabid, and Mohamed Rochdi. "Richesse et diversité floristique de la suberaie de la Mamora (Maroc)." Acta Botanica Malacitana 30 (December 1, 2005): 127–38. http://dx.doi.org/10.24310/abm.v30i0.7187.
Full textSemeki Ngabinzeke, Jean, Mikhail Pitchugin, Julie Linchant, Cédric Vermeulen, Jean-Marie Kahindo Muhongya, and Philippe Lejeune. "Une méthode simple et rapide pour l’évaluation de statistiques d’occupation du sol à l’aide d’images à très haute résolution acquises par mini-drone." BOIS & FORETS DES TROPIQUES 335 (March 15, 2018): 15. http://dx.doi.org/10.19182/bft2018.335.a31497.
Full textNiyonsenga, Gaudence, Darius Gishoma, Ruth Sego, Marie Goretti Uwayezu, Bellancille Nikuze, Margaret Fitch, and Pierre Céléstin Igiraneza. "Connaissances, utilisation et obstacles liés au dépistage du cancer du col utérin dans des hôpitaux de district de Kigali, au Rwanda." Canadian Oncology Nursing Journal 31, no. 3 (July 22, 2021): 275–84. http://dx.doi.org/10.5737/23688076313275284.
Full textGAIGNON, J. L. "Avant-propos." INRAE Productions Animales 17, no. 3 (July 29, 2004): 159–60. http://dx.doi.org/10.20870/productions-animales.2004.17.3.3585.
Full textScott, Fred W., and Andrew J. Hebda. "ANNOTATED LIST OF THE MAMMALS OF NOVA SCOTIA." Proceedings of the Nova Scotian Institute of Science (NSIS) 42, no. 2 (November 1, 2004). http://dx.doi.org/10.15273/pnsis.v42i2.3600.
Full textDissertations / Theses on the topic "Échantillonnage systématique"
Tessier, Maxime. "Étude de la performance d’un test d’association génétique pour des données familiales de survie en présence d’un biais de sélection." Master's thesis, Université Laval, 2020. http://hdl.handle.net/20.500.11794/66872.
Full textIn Leclerc et al. (2015, Genetic Epidemiology, 39 (6), 406-414), an association test between a group of genetic variants and censored phenotypes in presence of intrafamilial correlation is proposed. This test was implemented in a R package named gyriq. In this master’s thesis,we evaluate, with simulations, the performance of this test in presence of a sampling bias which stems from the data collection protocol. Indeed, in many situations, medical data from a family are considered if and only if a particular member of this family, called proband, is diagnosed with the event of interest during his medical exam. We develop multiple strategies to generate biased data according to such data collection protocol. We examine type 1 error and power of the association test in presence of such data, in the cases where there are 1 or more probands and when we sample only families where the probands have the event of interest or when we also sample a small proportion of families where the event has not occured for the probands. We conclude that the association test remains valid in presence of a selection bias but that the test power is diminished. Furthermore, the test is not valid when we include families where the event of interest has not occured for the probands.
Nadon, Jonathan. "Agrégation et échantillonnage systématique de séries chronologiques." Thèse, 2006. http://hdl.handle.net/1866/17290.
Full textGélinas-Lymburner, Emilie. "Développement d’une approche quantitative pour l’étude du poumon équin : fixation et échantillonnage pour l’application des principes de la stéréologie." Thèse, 2015. http://hdl.handle.net/1866/12987.
Full textThe present study aimed at developing a fixation and sampling protocol for the horse lung in agreement with recent published guidelines for a design-based stereology approach. The left lungs from control and from heaves-affected horses were fixed in 10% formaldehyde for 48hr at a controlled constant pressure of 25-30 cm H2O. Lungs were cut into 20-21 slices of a thickness of approximately 2.5cm each; 10-11 slices were then randomly and systematically selected for the measurement of the reference volume using the Cavalieri method. A systematic, uniform and random sampling (SURS) protocol using a 17 mm punch biopsy and the smooth fractionator principle was used to select a representative fraction of each lung. The vertical uniform random (VUR) and isotropic uniform random (IUR) sampling methods were both performed to compare the number of perpendicular airways obtained with each method. The general architecture and the quality of the fixed tissues were also evaluated. Equine lung tissues were successfully sampled with a protocol designed to yield accurate morphometric data. The tissues were fixed with minimal artifacts and contained an adequate amount of perpendicular airways in both VUR and IUR sections. In conclusion, we developed a fixation and sampling protocol adapted to the equine lung allowing the use of a design-based stereology approach to study airway remodeling.