Search results for "Prédicteur"
showing 3 items of 3 documents
Interannual memory effects for spring NDVI in semi-arid South Africa
2008
[1] Almost 20 years of Normalized Difference Vegetative Index (NDVI) and precipitation (PPT) data are analysed to better understand the interannual memory effects on vegetation dynamics observed at regional scales in Southern Africa (SA). The study focuses on a semi-arid region (25°S–31°S; 21°E–26°E) during the austral early summer (September–December). The memory effects are examined using simple statistical approaches (linear correlations and regressions) which require the definition of an early summer vegetation predictand (December NDVI minus September NDVI) and a consistent set of potential predictors (rainfall amount, number of rainy days, rainfall intensity, NDVI and Rain-Use-Efficie…
Accumuler le capital humain tout au long de la vie: Quels facteurs prédictifs de la participation à la formation permanente?
2003
This article addresses the main predictors of adult education, using statistical methods different from those generally used by social science researchers. Its aim is twofold. First, it seeks to explain in a simple and comprehensible manner the methodological value of these methods (in relation to the use of structural models); secondly, it demonstrates the concrete usefulness of these methods on the basis of a recent piece of research on the data from the International Adult Literacy Survey (IALS).
Les prédicteurs en grande section maternelle de la réussite en lecture en fin de première année de l'école primaire : l'impact du nom des lettres
2009
A number of variables predicting the success or failure in learning to read has been presented in the literature. Investigations, however, aiming to evaluate the impact of these factors in multivariate models are rare, particularly in French, and do not take into account participants' individual and social characteristics. In this perspective, a longitudinal study, comprising 199 students, was realised from kindergarten through first grade. The results show that, among all the variables studied, the naming of consonants and vowels in kindergartens is the best predictor of ackowledging both decoding letters and written comprehension at the end of the first grade. A discussion furthers the im…