Search results for "Statistique"
showing 10 items of 121 documents
Évaluation de l'influence des facteurs climatiques sur le bilan de masse du glacier Austre Loven (Spitsberg, 79°N) par une approche multivariée
2016
Arctic is a region where a quick warming is ongoing. Effects are particularly visible on glaciers of which dynamics is very sensitive to climate change. The goal of this study is to identify and rank the main climatological and nivological factors influencing the mass balance of a small arctic glacier in Svalbard using a statistical approach. To highlight spatial differences, cartography were then used. Results show that positive degree-days play an important role in explaining mass balance contrary to liquid precipitations that had a marginal effect over the studied period (2007-2014). Moreover, years with very different climatic conditions can lead to a similar mass balance.
PERO/AUNQUE et leurs équivalent français.
2002
International audience
L’eau, l’écrit et la société. Étude statistique sur les champs sémantiques dans les bases de données [CBMA]
2010
Intitulé « L’eau, l’écrit et la société. Étude statistique sur les champs sémantiques dans les bases de données [CBMA] », ce mémoire de master partait du constat que les chartes contiennent un nombre extrêmement important de termes relatifs à la description et donc, par extension, à la perception du monde par les médiévaux. Or, ces formules, plus ou moins stéréotypées, n’ont presque jamais été considérées comme des informatrices potentielles en ce qui concerne ce lien entre l’homme médiéval et le mundus, i.e. la Création qui l’entoure. Néanmoins, dès l’orée de l’étude, il est rapidement apparu qu’une telle recherche ne pouvait faire abstraction de plusieurs problématiques plus traditionnell…
Traitement des données issues du système d’information sur le suivi de l’étudiant (SISE) : apports et limites méthodologiques
2022
Determination of fatty acids and lipid classes in salmon oil by near infrared spectroscopy
2017
International audience; Near-infrared (NIR) spectroscopy was evaluated as a rapid method for the determination of oleic, palmitic, linoleic and linolenic acids as well as omega-3, omega-6, and to predict polyunsaturated, monounsaturated and saturated fatty acids, together with triacylglycerides, diglycerides, free fatty acids and ergosterol in salmon oil. To do it, Partial Least Squares (PLS) regression models were applied to correlate NIR spectra with aforementioned fatty acids and lipid classes. Results obtained were validated in front of reference procedures based on high performance thin layer and gas chromatography. PLS-NIR has a good predictive capability with relative root mean squar…
Vers une étude globale des connecteurs argumentatifs espagnols et français : premiers résultats d’une analyse statistique et comparative
2000
International audience
La structuration, la représentation et l'analyse spatiale des sites archéologiques forestiers du Châtillonnais
2011
Les inégalités environnementales en Bourgogne
2016
Detection of cosmic filaments using the Candy model
2004
We propose to apply a marked point process to automatically delineate filaments of the large-scale structure in redshift catalogues. We illustrate the feasibility of the idea on an example of simulated catalogues, describe the procedure, and characterize the results. We find the distribution of the length of the filaments, and suggest how to use this approach to obtain other statistical characteristics of filamentary networks.
L'évolution de l'occupation humaine : l'analyse spatiale exploratoire des données.Le problème de l'incertitude et de l'hétérogénéité des données en a…
2011
The analysis of the evolution of the settlement requires a lot of methodological questioning. Despite a frequent use of the spatial analysis methods, few works return to their methodological problems. This article proposes to make a comparison and a discussion around two exploratory statistical methods (the K function of Ripley and the Kernel Density Estimation). It seems that scale, quality and quantity of input data, are three essential parameters to be taken into account so as to lead a spatial analysis in archaeology. In intrinsic way, archaeological data are non homogeneous. For that purpose, our article proposes a multi scalar approach integrating the non homogeneousness character of …