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See detailL'estimation du débit de filtration glomérulaire en 2012: quelle valeur ajoutée pour la nouvelle équation CKD-EPI
DELANAYE, Pierre ULg; Mariat, Christophe; Moranne, Olivier et al

in Néphrologie & Thérapeutique (2012), 8

Mesurer ou estimer le debit de filtration glomerulaire (DFG) reste l’un des meilleurs moyens d’apprehender la fonction glomerulaire du rein. En 2009, l’equation Chronic Kidney Disease Epidemiology (CKD ... [more ▼]

Mesurer ou estimer le debit de filtration glomerulaire (DFG) reste l’un des meilleurs moyens d’apprehender la fonction glomerulaire du rein. En 2009, l’equation Chronic Kidney Disease Epidemiology (CKD-EPI) a ete proposee en lieu et place de l’equation Modification of Diet in Renal Disease (MDRD) pour estimer le DFG. Cette nouvelle equation fait partie desormais des toutes dernieres recommandations de la Haute Autorite de sante (HAS). Par rapport a MDRD, la formule CKD-EPI est sensee moins sous-estimer le DFG mesure, principalement dans les valeurs les plus hautes de DFG. Dans cette revue critique de la litterature, nous presenterons et discuterons les performances de cette nouvelle equation. Sur base des articles publies entre 2009 et 2012, nous en soulignerons les avantages, notamment en terme d’estimation de la prevalence de la maladie renale chronique (MRC), mais aussi les faiblesses, principalement dans certaines populations specifiques. En effet, toutes ces equations reposant sur la mesure de la creatinine serique restent des estimations et le nephrologue doit donc garder son sens critique dans l’interpretation de ces resultats. [less ▲]

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See detailEstimation du débit de filtration glomérulaire en transplantation rénale: étude multicentrique d'évaluation de la performance de la cystatine C
Masson, I.; Maillard, N.; Jaafar, A. et al

in Néphrologie & Thérapeutique (2011, September), 7(5), 290-91

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See detailEstimation du profil des arbres et calcul des assortiments
Palm, Rodolphe ULg

in Bulletin des Recherches Agronomiques de Gembloux (1982), 17(3), 251-262

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See detailL'estimation du temps chez l'animal
Richelle, Marc ULg

in Le temps, la chronobiologie, les temps sociaux, les temps individuels (1988)

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See detailL'estimation du volume de peuplements de hêtres au moyen de tarifs de cubage de peuplements.K
Fagot, Jean; Lecomte, Hugues; Rondeux, Jacques ULg

in Bulletin de la Société Royale Forestière de Belgique = Tijdschrift van de Koninklijke Belgische Bosbouwmaatschappij (1984), 91e année(6), 221-229

Various types of stand volume tables have been constructed for beech stands (Fagus sylvatica L.) in the southern part of Belgium. Volumes per hectare are calculated to 10 specified top girths. They are ... [more ▼]

Various types of stand volume tables have been constructed for beech stands (Fagus sylvatica L.) in the southern part of Belgium. Volumes per hectare are calculated to 10 specified top girths. They are based upon basal area and top height. [less ▲]

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See detailEstimation from cross-sectional data under a semiparametric truncation model
de Uña-Álvarez, Jacobo; Heuchenne, Cédric ULg; Laurent, Géraldine ULg

E-print/Working paper (2013)

Cross-sectional sampling is often used when investigating inter-event times, resulting in left-truncated and right-censored data. In this paper we consider a semiparametric truncation model in which the ... [more ▼]

Cross-sectional sampling is often used when investigating inter-event times, resulting in left-truncated and right-censored data. In this paper we consider a semiparametric truncation model in which the truncating variable is assumed to belong to a certain parametric family, while nothing is assumed on lifetime and censoring distributions. The novelty of this work is in the fact that it introduces estimators of this semiparametric model in the presence of censoring. Two alternative methods are considered, based on conditional and full likelihood considerations. Asymptotic representations of the estimators for the lifetime distribution are obtained, and their weak convergence is established. The finite sample performance of the new estimators is explored through simulations, and two real data illustrations are provided. One of the conclusions of our research is that both estimators perform better than Wang's NPMLE when the parametric family for the truncation variable is valid) in the sense of the integrated mean squared error, and that the full likelihood approach is preferable to the conditional likelihood approach for the estimation of the lifetime distribution but not necessarily for the estimation of the truncation distribution. [less ▲]

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See detailEstimation in censored linear regression via preliminary smoothing
Heuchenne, Cédric ULg; Van Keilegom, Ingrid

in Bulletin of the International Statistical Institute, 54th Session (2003)

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See detailEstimation in nonparametric location-scale regression models with censored data
Heuchenne, Cédric ULg; Van Keilegom, Ingrid

in Annals of the Institute of Statistical Mathematics (2010), 62

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See detailEstimation Monte Carlo sans modèle de politiques de décision
Fonteneau, Raphaël ULg; Murphy, Susan A.; Wehenkel, Louis ULg et al

in Revue d'Intelligence Artificielle [=RIA] (2011), 25

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See detailEstimation non-paramétrique de l'intensité d'un processus de Poisson.
Charles, Catherine ULg; Rasson, Jean-Paul

in GRETSI'01 (2001)

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See detailEstimation of inbreeding rates and extinction risk of forty one Belgian chicken breeds in 2005 and 2010
Moula, Nassim ULg; Philippe, François-Xavier ULg; Antoine-Moussiaux, Nicolas ULg et al

in Archivos de zootecnia (2014), 63(2),

In Belgium, as generally in Europe, the dominant position of the high producing commercial strains specialized in meat or eggs production threats of extinction the local traditional breeds. In this work ... [more ▼]

In Belgium, as generally in Europe, the dominant position of the high producing commercial strains specialized in meat or eggs production threats of extinction the local traditional breeds. In this work, a follow up of the changes in populations size, and the rates of inbreeding of the Belgian poultry breeds, has been carried out in 2005 and 2010. About forty breeds were concerned. The Belgian hen breeds being overwhelmingly under threat of extinction, because of the low number of individuals by breed. For each of these breeds, various criteria were considered, risk status, breeding male to breeding female ratio, effective population size, effective population size to actual size ratio and rate of inbreeding. [less ▲]

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See detailEstimation of (co)variance components across breeds by a test-day model adapted to New Zealand dairy cattle.
Vanderick, Sylvie ULg; Harris, Bevin; Mayeres, Patrick et al

in Proceedings of the British Society of Animal Science (2005)

Detailed reference viewed: 5 (2 ULg)