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See detailTracking by cluster analysis of feature points and multiple particle filters
Du, Wei ULg; Piater, Justus ULg

in Pattern Recognition and Image Analysis (2005)

A moving target produces a coherent cluster of feature points in the image plane. This motivates our novel method of tracking multiple targets by cluster analysis of feature points and Multiple particle ... [more ▼]

A moving target produces a coherent cluster of feature points in the image plane. This motivates our novel method of tracking multiple targets by cluster analysis of feature points and Multiple particle filters. First, feature points are detected by a Harris corner detector and tracked by a Lucas-Kanade tracker. Clusters of moving targets are then initialized by grouping spatially co-located points with similar motion using the EM algorithm. Due to the non-Gaussian distribution of the points in a cluster and the multi-modality resulting from multiple targets, multiple particle filters are applied to track all the clusters simultaneously: one particle filter is started for one cluster. The proposed method is well Suited for the typical video surveillance configuration where the cameras are still and targets of interest appear relatively small in the image. We demonstrate the effectiveness of our method on different PETS datasets. [less ▲]

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See detailUrgences medicales en diabetologie: l'acidocetose et le coma hyperosmolaire
Radermacher, Luc; D'Orio, Vincenzo ULg

in Revue Médicale de Liège (2005), 60(5-6, May-Jun), 466-71

Diabetic ketoacidosis and hyperglycaemic hyperosmolar state are relatively frequent metabolic emergencies. Such entities complicate type 1 and type 2 diabetes mellitus, respectively. Diagnosis is ... [more ▼]

Diabetic ketoacidosis and hyperglycaemic hyperosmolar state are relatively frequent metabolic emergencies. Such entities complicate type 1 and type 2 diabetes mellitus, respectively. Diagnosis is ultimately provided by blood and urine analysis. The pathophysiology is mainly based on insulin privation regarding ketoacidosis and resistance to insulin in hyperglycaemic crisis, with an additional deleterious role of counterregulatory hormones. Prognosis of such complications remains generally severe. Management is based on insulin infusion, fluid resuscitation as well as concomitant compensation for electrolytes losses. [less ▲]

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See detailAltered rhyolitic rocks in the Visé boreholes: a geochemical approach
Duchesne, Jean-Clair ULg; Goemaere, Eric; Grigolato, Jean-Christophe et al

in Geologica Belgica (2005), 8(3), 71-83

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See detailLe nouveau régime des successions internationales
Wautelet, Patrick ULg

in Revue Générale de Droit Civil Belge = Tijdschrift voor Belgisch Burgerlijk (2005)

Cette contribution fait le point sur les modifications apportées au régime des successions internationales par le Code de droit international privé. Loin de révolutionner la matière, le Code se contente ... [more ▼]

Cette contribution fait le point sur les modifications apportées au régime des successions internationales par le Code de droit international privé. Loin de révolutionner la matière, le Code se contente de prendre acte et de confirmer les principes classiques depuis longtemps acceptés. Sur le fond, les innovations sont limitées à des points secondaires. Partant, il faudra à l’avenir continuer de tenir compte du morcellement potentiel des successions en une masse mobilière et autant de masses immobilières qu’il y a d’immeubles dans des pays différents. L’étude des règles nouvelles révèle cependant que le Code apporte de nombreuses précisions et clarifications sur des questions qui n’avaient reçu, dans l’ancien droit, qu’un traitement sommaire, voire étaient restées sans réponse. C’est l’apport principal du Code de fournir une réglementation complète et détaillée d’une matière dont l’importance pratique ne cesse de croître.d [less ▲]

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See detailComparison of FEM simulations for the incremental forming process
Henrard, Christophe ULg; Habraken, Anne ULg; Szekeres, A. et al

in Advanced Materials Research (2005), 6-8

Incremental forming is an innovative and highly flexible sheet metal forming technology for small batch production and prototyping that does not require any adapted dies or punches to form a complex shape ... [more ▼]

Incremental forming is an innovative and highly flexible sheet metal forming technology for small batch production and prototyping that does not require any adapted dies or punches to form a complex shape. The purpose of this article is to perform FEM simulations of the forming of a cone with a 50-degree wall angle by incremental forming and to investigate the influence of some crucial computational parameters on the simulation. The influence of several parameters will be discussed: the FEM code used (Abaqus or Lagamine, a code developed at the University of Liège), the mesh size, the potential simplification due to the symmetry of the part and the friction coefficient. The output is given in terms of final geometry (which depends on the springback), strain history and distribution during the deformation, as well as reaction forces. It will be shown that the deformation is localized around the tool and that the deformations constantly remain close to a plane strain state for this geometry. Moreover, the tool reaction clearly depends on the way the contact is taken into account. [less ▲]

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See detailThermo-mechanical-metallurgical model to predict geometrical distortions of rings during cooling phase after ring rolling operations
Casotto, Silvia; Pascon, Frédéric ULg; Habraken, Anne ULg et al

in International Journal of Machine Tools & Manufacture (2005), 45(6), 657-664

The paper presents a validated numerical model able to predict geometrical distortions of rings during cooling phase after hot ring rolling operations. The model is capable to take into account the ... [more ▼]

The paper presents a validated numerical model able to predict geometrical distortions of rings during cooling phase after hot ring rolling operations. The model is capable to take into account the effects of all the phenomena resulting from the coupling of thermal, mechanical and metallurgical events. As simulation results strongly depend on the accuracy of input data, physical simulation experiments on real-material samples are developed and carried out to characterize material behaviour during phase transformation. The numerical model is then validated by an industrial case proving its effectiveness in predicting final ring distortions at room temperature. [less ▲]

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See detailFinite element modeling of incremental forming of aluminium sheets
He, S.; Van Bael, A.; Van Houtte, P. et al

in Advanced Materials Research (2005), 6/8

Incremental forming is an innovative and flexible sheet metal forming technology for small batch production and prototyping, which does not require any dedicated die or punch to form a complex shape. This ... [more ▼]

Incremental forming is an innovative and flexible sheet metal forming technology for small batch production and prototyping, which does not require any dedicated die or punch to form a complex shape. This paper investigates the process of single point incremental forming of an aluminum cone with a 50-degree wall angle both experimentally and numerically. Finite element models are established to simulate the process. The output of the simulation is given in terms of final geometry, the thickness distribution of the product, the strain history and distribution during the deformation as well as the reaction forces. Comparison between the simulation results and the experimental data is made. [less ▲]

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See detailModélisation du comportement (clinchage des tôles minces)
Pietrapertosa, C.; Habraken, Anne ULg; Jaspart, Jean-Pierre ULg

in Techniques de l'ingénieur (2005), 4(BM 7 820), 1-8

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See detailAnalysis of the sensivity of FEM predictions to numerical parameters in deep drawing simulations
Duchene, Laurent ULg; Habraken, Anne ULg

in European Journal of Mechanics A : Solids (2005), (24), 614-629

In this study, deep drawing finite element (FE) simulations are compared with experimental results. The steel grade, the geometry and the parameters of the experimental deep drawing processes are detailed ... [more ▼]

In this study, deep drawing finite element (FE) simulations are compared with experimental results. The steel grade, the geometry and the parameters of the experimental deep drawing processes are detailed in this paper. Particular attention is paid to numerical models. The main part of the article is dedicated to a broad sensitivity study. The influence of several numerical parameters on the predicted punch force and earing profile is analysed. A quadratic [Hill, R., 1948. A theory of the yielding and plastic flow of anisotropic metals. Proc. Roy. Soc. London Ser. A 193, 281–297] constitutive law is compared with more sophisticated micro-macro constitutive laws. The sensitivity of these laws to the initial data characterizing material behaviour is presented. A significant influence of the FE type and the number of FE layers is noticed. Finally, it also appears that friction parameters (penalty coefficient and Coulomb friction coefficient) have a significant influence on numerical results. The low anisotropy of the steel sheet increases the influence of several numerical parameters. That influence would not be observed with a highly anisotropic steel. [less ▲]

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See detailLe Code de droit international privé et le procès international
Wautelet, Patrick ULg

in De Leval, Georges (Ed.) Actualités en droit judiciaire (2005)

This paper gives an overview of the new rules introduced by the Code of Private International Law (Act of 16 July 2004) in the field of jurisdiction (when do Belgian courts have jurisdiction) and ... [more ▼]

This paper gives an overview of the new rules introduced by the Code of Private International Law (Act of 16 July 2004) in the field of jurisdiction (when do Belgian courts have jurisdiction) and recognition and enforcement of foreign judgments. [less ▲]

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See detailBelgian guidelines concerning central neural blockade in patients with drug-induced alteration of coagulation: an update
Vandermeulen, E.; Singelyn, F.; Vercauteren, M. et al

in Acta Anaesthesiologica Belgica (2005), 56(2), 139-146

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See detailPosition of SARB in regard to premedication
Herregods, L.; Barvais, Luc; Brichant, Jean-François ULg et al

in Acta Anaesthesiologica Belgica (2005), 56(4), 389-390

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See detailLa position de la SBAR à l'égard de la prémédication
Herregods, L.; Barvais, Luc; Brichant, Jean-François ULg et al

in Acta Anaesthesiologica Belgica (2005), 56

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See detailRahier, de Jongh, Spirlet : souvenirs de famille
Donneau, Olivier ULg

in Olne, qualité de vie, qualité de village, Catalogue de l’exposition organisée à la Maison communale du 5 au 27 novembre 2005 (2005)

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See detailUn moine collectionneur de gravures à l'abbaye du Val-Dieu, Servais Duriau (1701-1775)
Postula, Jean-Louis ULg

in Bulletin de la Société Royale Le Vieux-Liège (2005), XIV(310), 665-696

Cet article présente une importante collection de gravures, actuellement conservée au Trésor de la cathédrale de Liège, constituée au XVIIIe siècle par un moine de l’abbaye cistercienne du Val-Dieu (Aubel ... [more ▼]

Cet article présente une importante collection de gravures, actuellement conservée au Trésor de la cathédrale de Liège, constituée au XVIIIe siècle par un moine de l’abbaye cistercienne du Val-Dieu (Aubel, belgique), Servais Duriau, et demeurée inédite. Cet ensemble, riche de plus de douze mille pièces présentées dans dix-neuf albums reliés, est ainsi décrit et analysé dans une perspective historique. Nous nous intéressons ensuite à la biographie du moine Duriau et à l’évolution de la collection, depuis le siècle des Lumières jusqu’à nos jours. [less ▲]

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See detailLe contrôle juridictionnel des "validations législatives" en France et en Belgique : un conflit de légitimités
Rosoux, Géraldine ULg

in Revue de la Faculté de Droit de l'Université de Liège (2005)

The articles gives an overview upon the jurisprudence of the Belgian constitutional court, the French constitutional council and the European Court of Human rights, in matter of legislative norms ... [more ▼]

The articles gives an overview upon the jurisprudence of the Belgian constitutional court, the French constitutional council and the European Court of Human rights, in matter of legislative norms interfering with a "fair trial" about the compatibility of executive norms. [less ▲]

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See detailBrèves considérations sur l’obsolète notion de délit de presse…
Rosoux, Géraldine ULg

in Revue de Droit Pénal et de Criminologie (2005)

The article gives an overview of the evolution of the constitutional concept of "press offence".

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See detailPierre Ruelle, du picard à l'ancien français
Droixhe, Daniel ULg

in Pierre Ruelle et le Borinage (2005)

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See detailPsychometric properties of the temperament and character inventory-revised (TCI-R) in a Belgian sample.
Hansenne, Michel ULg; Delhez, Marie; Cloninger, C Robert

in Journal of Personality Assessment (2005), 85(1), 40-9

The Temperament and Character Inventory (TCI; Cloninger, Przybeck, Svrakic, & Wetzel, 1994) is a self-questionnaire developed to assess the 7 dimensions of personality described by Cloninger et al. (1994 ... [more ▼]

The Temperament and Character Inventory (TCI; Cloninger, Przybeck, Svrakic, & Wetzel, 1994) is a self-questionnaire developed to assess the 7 dimensions of personality described by Cloninger et al. (1994) with a total of 29 subscales. In 1999, a revised version was proposed by Cloninger (TCI-R). In this study, we present psychometric properties of the TCI-R from 958 French-speaking participants of Belgium. Women exhibited higher scores for harm avoidance, reward dependence, and cooperativeness dimensions. The proposed factorial structure of 4 temperament dimensions and 3 character dimensions was confirmed. The TCI-R inventory had good test-retest reliabilities as well as good alpha coefficients. The addition of 3 new subscales to the original scale for Persistence has produced a very reliable dimension in the TCI-R. [less ▲]

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