Search results for " Normal"

Le travail, au-delà de l'évaluation : normes et résistances

2018

National audience; Certains milieux de travail connaissent une véritable inflation des normes. Leurs finalités sont multiples : instaurer de la transparence, garantir au « client » un service de qualité, orienter et contrôler les comportements, responsabiliser les acteurs et les inciter à « l'excellence », mieux évaluer le personnel. En constituant un véritable corset, voire un carcan, ces normes peuvent empêcher les salariés de réaliser un travail de qualité, être une source de démotivation - voire de souffrance au travail - et fragiliser les collectifs de travail en place. Elles peuvent aussi générer des actions de résistance, individuelles et/ou collectives. Damien Collard invite le lect…

Finding condensed descriptions for multi-dimensional data.

1976

Abstract We describe two programs that may be used to find condensed descriptions for data available in a contingency table or in a covariance matrix in the case that these data follow a multinomial or a multivariate normal distribution, respectively. The programs perform a stepwise model search among multiplicative models by computing appropriate likelihood-ratio test statistics.

Contribution to variational analysis : stability of tangent and normal cones and convexity of Chebyshev sets

2014

The aim of this thesis is to study the following three problems: 1) We are concerned with the behavior of normal cones and subdifferentials with respect to two types of convergence of sets and functions: Mosco and Attouch-Wets convergences. Our analysis is devoted to proximal, Fréchet, and Mordukhovich limiting normal cones and subdifferentials. The results obtained can be seen as extensions of Attouch theorem to the context of non-convex functions on locally uniformly convex Banach space. 2) For a given bornology β on a Banach space X we are interested in the validity of the following "lim inf" formula (…).Here Tβ(C; x) and Tc(C; x) denote the β-tangent cone and the Clarke tangent cone to …

Invariant approximation results in cone metric spaces

2011

‎Some sufficient conditions for the existence of fixed point of mappings‎ ‎satisfying generalized weak contractive conditions is obtained‎. ‎A fixed‎ ‎point theorem for nonexpansive mappings is also obtained‎. ‎As an application‎, ‎some invariant approximation results are derived in cone metric spaces‎.

Reversed Phase Liquid Chromatography

2015

Aproximació als pronoms adverbials i personals febles de l'Espill

1984

Aproximació als pronoms adverbials i personals febles de l'Espill

Schools without measurements : towards a pedagogy of recognition

2017

Since the OECD launched the Program for International Student Assessment (PISA) in 2000, education measurements have mainly been concerned with recording and issuing results in terms of school success or failure based on items aimed at measuring academic achievement. A major consequence of this obsession with quantifiable results, which stems from a sort of statistical monoculture, has been a shift of our attention away from the seminal fact that, indeed, educational disparities are directly linked to social inequalities. Besides, the application of accountability criteria within systems of education tends to hide the increasing deregulation of the former. Contrary to its seeming appearance…

Sequence diversity in the pe_pgrs genes of Mycobacterium tuberculosis is independent of human T cell recognition.

2014

ABSTRACT The Mycobacterium tuberculosis genome includes the large family of pe_pgrs genes, whose functions are unknown. Because of precedents in other pathogens in which gene families showing high sequence variation are involved in antigenic variation, a similar role has been proposed for the pe_pgrs genes. However, the impact of immune selection on pe_pgrs genes has not been examined. Here, we sequenced 27 pe_pgrs genes in 94 clinical strains from five phylogenetic lineages of the M. tuberculosis complex (MTBC). We found that pe_pgrs genes were overall more diverse than the remainder of the MTBC genome, but individual members of the family varied widely in their nucleotide diversity and in…

Computing Sum of Products about the Mean with Pairwise Algorithms

1997

We discuss pairwise algorithms, a kind of computational algorithm which can be useful in dynamically updating statistics as new samples of data are collected. Since test data are usually collected through time as individual data sets, these algorithms would be profitably used in computer programs to treat this situation. Pair-wise algorithms are presented for calculating the sum of products of deviations about the mean for adding a sample of data (or removing one) to the whole data set.

Comparing normal means: new methods for an old problem

2007

Comparing the means of two normal populations is an old problem in mathematical statistics, but there is still no consensus about its most appropriate solution. In this paper we treat the problem of comparing two normal means as a Bayesian decision problem with only two alternatives: either to accept the hypothesis that the two means are equal, or to conclude that the observed data are, under the assumed model, incompatible with that hypothesis. The combined use of an information-theory based loss function, the intrinsic discrepancy (Bernardo and Rueda 2002}, and an objective prior function, the reference prior \citep{Bernardo 1979; Berger and Bernardo 1992), produces a new solution to this…