References of "2008"
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See detailDevelopment of products for GNSS users at the Belgian Solar-Terrestrial Centre of Excellence
Warnant, René ULg; Lejeune, Sandrine; Stankov, Stanimir et al

Conference (2008, December)

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See detailFrancophones et plurilingues : le rapport au français des Belges issus de l’immigration
Lucchini, Silvia ULg; Hambye, Philippe; Forlot, Gilles et al

in Français et Société (2008), 19

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See detailA decision problem for ultimately periodic sets in non-standard numeration systems
Charlier, Emilie ULg

Scientific conference (2008, December)

Given a linear numeration system U and a set X (include in N) such that repU(X) is recognized by a (deterministic) finite automaton. Is it decidable whether or not X is ultimately periodic, i.e., whether ... [more ▼]

Given a linear numeration system U and a set X (include in N) such that repU(X) is recognized by a (deterministic) finite automaton. Is it decidable whether or not X is ultimately periodic, i.e., whether or not X is a finite union of arithmetic progressions? Honkala showed that this problem turns out to be decidable for the usual b-ary numeration system (b greater than 2) defined by U_n = bU_{n-1} for n greater than 1 and U_0 = 1. In this work, we give a decision procedure for this problem for a large class of linear numeration systems. [less ▲]

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See detailNorme(s) linguistique(s) et représentations des enseignants. Aperçu du traitement des 'écarts' linguistiques au cours de français
El Karouni, Salima; Collès, Luc; Lucchini, Silvia ULg

in Enjeux : Revue de Formation Continuée et de Didactique du Français (2008), 73

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See detailLe documentaire belge contemporain saisi par la pédagogie de la Shoah: Modus Operandi
Van Cauwenberge, Geneviève ULg

in Témoigner entre Histoire et Mémoire : Revue Pluridisciplinaire de la Fondation Auschwitz (2008), 101

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See detailUnderstanding Non-equilibrium Thermodynamics
Lebon, Georgy ULg; Jou, david; Casas-Vazquez, jose

Book (2008)

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See detailControlled flow of smart powders
Lumay, Geoffroy ULg; Vandewalle, Nicolas ULg

in Physical Review E (2008), 78(6),

The flow properties of powders are mainly due to the interplay of cohesive forces and intergrain frictional forces. We have experimentally investigated a "smart granular system" for which the ... [more ▼]

The flow properties of powders are mainly due to the interplay of cohesive forces and intergrain frictional forces. We have experimentally investigated a "smart granular system" for which the interparticle cohesion can be tuned by a magnetic field B. We show that the rheological features of such a system can be controlled. Indeed, the granular flow can be controlled or even stopped by the magnetic field. Depending on the orientation of B, different dynamical regimes can be obtained like a "dry liquid state" forming conical droplets as well as a "layered soft state". Scaling lows are given for the flow rate outside a funnel as a function of B and for the stopping threshold of the flow as a function of the funnel output diameter D. From this analysis, it appears that the flowing properties are related to the dimensionality of the magnetic aggregates. [less ▲]

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See detailArthrose et obésité : Modèles expérimentaux
Gabay, Odile; Hall, David; Berenbaum, Francis et al

in Revue du Rhumatisme (2008), 75(12), 1215-1219

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See detailNeonatal Osteopenia and Bone Mineralization
Rigo, Jacques ULg

in eNeonatal review (2008), 6(4),

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See detailLa sculpture de la façade occidentale de cathédrale de Laon : eschatologie et humanisme
Kasarska, Iliana ULg

Book published by Picard (2008)

La cathédrale de Laon comporte le plus grand ensemble sculpté de la fin du XIIe siècle: trois portails et leurs gâbles, deux fenêtres à voussures, de nombreuses têtes dans les écoinçons des baies, des ... [more ▼]

La cathédrale de Laon comporte le plus grand ensemble sculpté de la fin du XIIe siècle: trois portails et leurs gâbles, deux fenêtres à voussures, de nombreuses têtes dans les écoinçons des baies, des personnages sur les arcs-boutants et des boeufs énigmatiques aux sommets des tours du massif occidental. L’ouvrage révèle un programme d'ensemble selon lequel les thèmes des portails latéraux - Incarnation et Jugement dernier - sont couronnés et achevés par le Triomphe de la Vierge au portail central, symbole de l'espoir eschatologique des chrétiens. Ce programme est attribué à Gautier de Mortagne, évêque de Laon de 1155 à 1174. Il est amplifié par les thèmes novateurs des fenêtres - Arts libéraux et Arts mécaniques au nord, Création-Rédemption au sud – lesquels procèdent directement des écrits de Hugues de Saint-Victor (1096-1141), théologien majeur du XIIe siècle avec qui Gautier de Mortagne entretenait des relations suivies. La présence des boeufs en haut des tours peut alors s'interpréter comme une introduction oculaire à ce programme: rappel de l'apparition providentielle d'un boeuf auprès d'un ouvrier lors de la construction de la cathédrale et herméneutique de ce miracle comme conjugaison nécessaire des oeuvres humaines et de la grâce divine. Les analyses iconographique, stylistique et archéologique ont permis plusieurs découvertes : l’existence d’une chapelle axiale dans le choeur primitif (détruit au début du XIIIe siècle), le remploi d’un portail complet datant de la toute fin de l'épiscopat de Barthélemy de Joux (1113-1151) et achevé avant le début de la construction de la cathédrale actuelle. La richesse et l’originalité de cet ensemble sculpté sont servies par une couverture photographique inédite présentée sous forme de corpus dans le CD-ROM interactif qui accompagne l’ouvrage. La critique d’authenticité, complétée par l’analyse de chaque sculpture du corpus, met en évidence un nombre significatif de têtes du XIIe siècle et dénote le bon état général de la sculpture originale. L’étude stylistique, couplée à celle des techniques d’exécution, permet de distinguer les manières d’un nombre réduit d’artistes : celui du portail de remploi, celui du choeur primitif et des clefs de voûte de la nef, l’artiste principal de la façade (manière A) et des arcs-boutants de la nef, et enfin celui de la manière B de la façade. L’auteur montre que ce dernier ira ensuite accomplir le décor sculpté de l’abbatiale Saint-Yved de Braine. La chronologie du chantier conduit à remonter quelque peu la datation de la sculpture de la façade au cours du dernier quart du XIIe siècle. Laon s’intègre dans le style antiquisant, appelé par commodité << style 1200 >> et devient une référence déterminante pour Chartres, Lausanne et Maastricht. Plus largement, l’écho qu’en offrent les ensembles sculptés de Paris, Reims et Amiens font incontestablement de Laon un grand chantier européen. [less ▲]

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See detailLa pyknocytose infantile : une anemie neonatale mal connue a propos de 5cas.
Limme, Boris ULg; Dresse, Marie-Françoise ULg; Ketelslegers, O. et al

in Archives de Pédiatrie (2008), 15(12), 1765-8

Infantile pyknocytosis (IP) is a rare hematological entity of newborns. It is a form of hemolytic anemia with unusual red cell morphology: the red blood cells are distorted, irregular, and small with many ... [more ▼]

Infantile pyknocytosis (IP) is a rare hematological entity of newborns. It is a form of hemolytic anemia with unusual red cell morphology: the red blood cells are distorted, irregular, and small with many projections. Spontaneous resolution usually occurs by 4-6months of age. OBSERVATION: We describe the clinical features and biological parameters of 5 cases of IP. The first symptoms were always early jaundice, which required phototherapy. Anemia was severe in all babies and red blood cell transfusion was needed. CONCLUSION: IP is a rare cause of neonatal anemia whose diagnosis is based on a careful peripheral blood smear examination. In our study, anemia was severe and required red blood cell transfusion. Ethnic specificity and familial occurrence are reported in our experience. [less ▲]

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See detailLindane et goudron dans les shampoings: quelle toxicité ?
Theunis, Laetitia ULg

Conference (2008, December)

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See detailLes dauphins ont-il un "pouvoir thérapeutique"?
Servais, Véronique ULg

Article for general public (2008)

Le texte propose une synthèse critique des études sur l'efficacité de la delphinothérapie et cherche à comprendre pourquoi, en dépit de résultats pour la plupart négatifs, tout le monde continue à croire ... [more ▼]

Le texte propose une synthèse critique des études sur l'efficacité de la delphinothérapie et cherche à comprendre pourquoi, en dépit de résultats pour la plupart négatifs, tout le monde continue à croire à l'efficacité thérapeutique de ces pratiques. [less ▲]

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See detailAtelier n°1 [A propos des valeurs]
Van Beveren, Julien ULg

in Puzzle (2008), 25

Compte rendu d'un atelier organisé lors de l'Université d'été 2008 du Centre Interfacultaire de Formation des ENseignants (CIFEN) de l'Université de Liège. Y est abordée la question des valeurs à l'école ... [more ▼]

Compte rendu d'un atelier organisé lors de l'Université d'été 2008 du Centre Interfacultaire de Formation des ENseignants (CIFEN) de l'Université de Liège. Y est abordée la question des valeurs à l'école, à travers un exemple spécifique à la discipline scolaire "français". [less ▲]

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See detailCost-utility of calcium and vitamin D supplementation in the treatment of postmenopausal osteoporotic women
Hiligsmann, Mickaël ULg; Bruyère, Olivier ULg; Ethgen, Olivier ULg et al

in Osteoporosis International (2008, December), 19(S2), 363

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See detailProduction of alarm pheromone in aphids and perception by ants and natural enemies
Verheggen, François ULg

Doctoral thesis (2008)

Most Aphidinae species produce and use (E)-ß-farnesene (Eßf) as an alarm pheromone. This sesquiterpene is released by individuals under attack by a predator, and nearby aphids exhibit a variety of alarm ... [more ▼]

Most Aphidinae species produce and use (E)-ß-farnesene (Eßf) as an alarm pheromone. This sesquiterpene is released by individuals under attack by a predator, and nearby aphids exhibit a variety of alarm behaviours. This PhD thesis aims to better understand how aphids manage their production and emission of alarm pheromone (Chapter IV). We also wanted, in a second step, to improve our knowledge on the roles that Eßf could play in the relationships that aphids have with their predators (Chapter V) and tending ants (Chapter VI), in order to better pinpoint the problem in this very tough context. The aphid predators have indeed a real advantage to be able to use the odorant cues emitted by their prey, to locate them and to select an adequate oviposition site. Ants establish with certain aphid species mutualistic relationships, which occurrence could be facilitated by the use of aphids’ odours. In Chapter IV, we have highlighted that aphid colonies non subjected to attack by predators release constantly small quantities of Eßf in their headspace, which means that this molecule could have additional roles than just acting as an alarm pheromone. In a second study, we demonstrated that the release of Eßf was not contagious, and therefore that a non stressed aphid receiving the alarm signal does not release additional Eßf. Since the production of alarm pheromone is likely to entail physiological cost, we tested and validated the hypothesis that aphids regulate their Eßf production according to their social environment. In Chapter V, we studied the ability of the hoverfly predator Episyrphus balteatus (Diptera, Syrphidae) to be used as biological control agent against aphids infesting tomato plants (Lycopersicon esculentum). After identifying the odours emitted by aphid infested plants, we have demonstrated that although this Diptera is able to perceive all the odours released by the system, it mainly uses Eßf to select its oviposition site. However, the E. balteatus larvae are not adapted to the architecture of tomato plants. We also showed that the Asian ladybeetle Harmonia axyridis (Coleoptera, Coccinellidae) olfaction was adapted to the perception of Eßf and that this beetle is also attracted by this sesquiterpene. Finally, in Chapter VI, we characterized the benefits accruing to aphid populations that have established mutualistic relationships with Lasius niger (Hymenoptera, Formicidae), and have demonstrated the role of Eßf and honeydew, respectively in locating aphid colonies and in the persistence of the mutualism. [less ▲]

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See detailOverlay Routing using Coordinate Systems
Cantin, François ULg; Gueye, Cheikh Ahmadou Bamba ULg; Kaafar, Mohamed Ali ULg et al

Poster (2008, December)

We address the problem of finding indirect overlay paths that reduce the latency between pairs of nodes in an overlay. To this end we propose to rely on an Internet Coordinate System (ICS), namely Vivaldi ... [more ▼]

We address the problem of finding indirect overlay paths that reduce the latency between pairs of nodes in an overlay. To this end we propose to rely on an Internet Coordinate System (ICS), namely Vivaldi, to estimate RTTs and help find these interesting detours. We define two initial criteria to illustrate our approach and assess their true/false positive rates. [less ▲]

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