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Peer Reviewed
See detailGallbladder mucocele: diagnosis, treatment and outcome in 4 dogs
Carofiglio, Francesca; Bongartz, Alexandre; Busoni, Valeria ULg et al

Poster (2004, July)

Detailed reference viewed: 24 (6 ULg)
Peer Reviewed
See detailGallo-romance I: Historical and etymological lexicography
Buchi, Eva; Renders, Pascale ULg

in Gouws, Rufus H.; Heid, Ulrich; Schweickard, Wolfgang (Eds.) et al Dictionaries: An International Encyclopedia of Lexicography. Supplementary Volume: Recent Developments with Focus on Electronic and Computational Lexicography (2013)

Detailed reference viewed: 142 (8 ULg)
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See detailGalloping and compact line
Lilien, Jean-Louis ULg

in Proceedings of the CIGRE Symposium on compacting overhead transmission lines (1991, May)

Galloping may alos be a problem for compact line. The paper is analysing that particular problem.

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See detailGalloping Conductors
Lilien, Jean-Louis ULg; Havard, Dave; Van Dyke, Pierre

in Chan, John (Ed.) EPRI Transmission Line Reference Book : Wind-Induced Conductor Motion (2009)

The chapter describes galloping of overhead conductors. It includes an overview on the phenomenon, with information on its characteristics, types of galloping, damage resulting from it, and causes. The ... [more ▼]

The chapter describes galloping of overhead conductors. It includes an overview on the phenomenon, with information on its characteristics, types of galloping, damage resulting from it, and causes. The chapter also covers the mechanisms of galloping and reviews protection methods. [less ▲]

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See detailGalloping data base on single and bundle conductors prediction of maximum amplitudes
Lilien, Jean-Louis ULg; Havard, Dave

in IEEE Transactions on Power Delivery (2000), 15(N°2), 670-674

A data base of 166 cases has been analysed to produced formula to predict galloping amplitudes on power lines either for single conductor of bundle conductor lines.Calculation enhanced the prediction for ... [more ▼]

A data base of 166 cases has been analysed to produced formula to predict galloping amplitudes on power lines either for single conductor of bundle conductor lines.Calculation enhanced the prediction for single conductors but predict larger amplitudes for bundle. [less ▲]

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See detailGalloping of electrical lines in wind tunnel facilities
Chabart, Olivier; Lilien, Jean-Louis ULg

in Journal of Wind Engineering & Industrial Aerodynamics (1998), 74-76

Galloping on power lines is a difficult matter. In this paper a galloping has been reproduced in a wind tunnel on a section of an actual conductor with actual ice shape. Aerodynamics is first detailed ... [more ▼]

Galloping on power lines is a difficult matter. In this paper a galloping has been reproduced in a wind tunnel on a section of an actual conductor with actual ice shape. Aerodynamics is first detailed. Then flutter type and Den Hartod type galloping has been obtained in the wind tunnel depending on changeable ratio vertical to torsional frequencies. [less ▲]

Detailed reference viewed: 34 (0 ULg)
See detailGALOCAD : GALileo LOcal Component for nowcasting and forecasting Atmospheric Disturbances
Warnant, René ULg; Kutiev, Ivan; Jodogne, Jean-Claude et al

Conference (2006)

Detailed reference viewed: 19 (0 ULg)
See detailGALOCAD User interface
Warnant, René ULg; Wautelet, Gilles ULg

Report (2008)

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See detailLe galop des conducteurs. Etat de l'art.
Lilien, Jean-Louis ULg

in Electra (2007), 232

Power line galloping is a large vibration (up to the sag) at very low frequency (fraction of Hz) occuring on power line spans under heavy wind and cold temperature, with ice/snow deposit. Galloping is due ... [more ▼]

Power line galloping is a large vibration (up to the sag) at very low frequency (fraction of Hz) occuring on power line spans under heavy wind and cold temperature, with ice/snow deposit. Galloping is due to aerodynamic or aeroelastic instability. It may cause dramatic damages on conductor, hardware and towers. [less ▲]

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See detailGame over : mathématiques et jeux vidéos
Rigo, Michel ULg

Learning material (2011)

Le but de cet exposé est de présenter, à travers plusieurs exemples simples, des outils mathématiques utilisés dans la conception de jeux vidéos (par exemple : projections, produits scalaire et vectoriel ... [more ▼]

Le but de cet exposé est de présenter, à travers plusieurs exemples simples, des outils mathématiques utilisés dans la conception de jeux vidéos (par exemple : projections, produits scalaire et vectoriel, calcul matriciel pour l'animation en 3D, fonctions et fractales pour la création de textures procédurales et de matériaux, etc.). Les exemples seront choisis en fonction des connaissances préalables du public (analyse, algèbre, géométrie) et permettront de mettre en évidence l'utilité en infographie des concepts vus au cours de mathématiques. [less ▲]

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See detailGame over! Wildlife collapse in northern Central African Republic
Bouché, Philippe ULg; Nzapa Mbeti Mange, Roland; Tankalet, Floride et al

in Environmental Monitoring & Assessment (2012), 184(11), 7001-7011

The wildlife populations of northern Central African Republic (CAR) have long suffered intense uncontrolled hunting. Socio-political turmoil in northern CAR that started in 2002 resulted in a rebellion in ... [more ▼]

The wildlife populations of northern Central African Republic (CAR) have long suffered intense uncontrolled hunting. Socio-political turmoil in northern CAR that started in 2002 resulted in a rebellion in 2006. An aerial sample count was carried out in northern CAR after the cease-fire to assess the impact of this troubled period on wildlife. The survey was flown at the end of the dry season in February-March 2010. It covered a landscape complex of 95 000 km² comprising national parks, hunting reserves and community hunting areas. Comparison with earlier surveys reveal a dramatic decline of wildlife: the numbers of large mammals fell by 94% in 30 years, probably due to poaching, loss of habitat and diseases brought by illegal movements of cattle. Elephant (Loxodonta africana), reduncini and topi (Damaliscus lunatus) populations showed the greatest decline (each over 90%). Other species declined by 70 to 80% during the same period. The future of the rest of the wildlife in this area is dark without a strong commitment to provide adequate funding and quickly implement determined field management. Reinforced cooperation with neighbouring Chad and Sudan is required since they are facing similar problems. [less ▲]

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See detailGame species monitoring using road–based distance sampling in association with thermal imagers: a covariate analysis
Morelle, Kevin ULg; Bouché, Philippe; Lehaire, François ULg et al

in Animal Biodiversity and Conservation (2012), 35(2), 253-265

Monitoring of game species populations is necessary to adequately assess culling by hunters in areas where natural large predators are absent. However, game managers have to control several species and ... [more ▼]

Monitoring of game species populations is necessary to adequately assess culling by hunters in areas where natural large predators are absent. However, game managers have to control several species and they often lack of an efficient and convenient survey design method. Monitoring several species at that same time over large areas could thus be cost– and time–effective. We tested the influence of several factors during monitoring of three common game species, (wild boar, roe deer and red fox, using road–based distance sampling in association with thermal imagers. This pilot survey based on 20 night counts in five contrasting sites studied the effect of several covariates (species, thermal imaging, observer, group size, and habitat type) on the detection probabilities. No differences were observed between thermal imagers and group sizes , but we found differences between observers . Expected differences were also observed between species and between habitat type. Our results show that the detectability of low cost thermal imaging equipment is similar to that of more expensive methods, highlighting new possibilities for the use of thermal imagery by game managers. Although adjustments should be made to the study design our findings suggest that large–scale multi–species monitoring could be an efficient method for common game species. [less ▲]

Detailed reference viewed: 178 (54 ULg)
See detailGame studies in french speaking area
Hurel, Pierre-Yves ULg

Conference (2015, November 05)

Dans cette communication, j'ai présenté le champ des "game studies" à mon laboratoire d'accueil, le GAP, au sein duquel j'ai effectué un séjour de recherche d'octobre à décembre 2015. J'ai présenté les ... [more ▼]

Dans cette communication, j'ai présenté le champ des "game studies" à mon laboratoire d'accueil, le GAP, au sein duquel j'ai effectué un séjour de recherche d'octobre à décembre 2015. J'ai présenté les principales spécificités du champ francophone (tel quel le recours à Henriot), les institutions structurant le milieu (OMNSH, LabJMV, etc.) et quelques travaux récents et reconnus. [less ▲]

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See detailGamifier un quiz – Effet graduel sur la performance, l’immersion et la perception de compétence
le Maire, Nathalie ULg; Fauconnier, Marie-Laure ULg; Colaux, Catherine ULg et al

Conference (2016, July 06)

Dans un contexte marqué par l’arrivée d’une génération pour laquelle les technologies, les réseaux sociaux et les jeux en ligne relèvent de l’évidence (Stein, 2013; Weiler, 2004), le jeu a souvent été ... [more ▼]

Dans un contexte marqué par l’arrivée d’une génération pour laquelle les technologies, les réseaux sociaux et les jeux en ligne relèvent de l’évidence (Stein, 2013; Weiler, 2004), le jeu a souvent été qualifié de véhicule d’une pédagogie rendant l’étudiant acteur de son apprentissage, conférant une dimension de défi aux activités éducatives et générant une motivation intrinsèque (Foster, 2008; Kang & Tan, 2008; McFarlane et al., 2002; Mitchell & Savill-Smith, 2004; Papastergiou, 2009). Ce potentiel éducatif du jeu a cependant été souvent associé à des jeux immersifs (de Freitas, 2006) requérant la mise en œuvre d’une trame narrative et dont le développement peut s’avérer couteux. L’utilisation de mini-jeux est considérée comme une solution alternative à ces « serious games » complexes car ils permettent d’enseigner un grand nombre de concepts tout en générant de faibles coûts de développement (Illanas, Gallego, Satorre, & Llorens, 2008). Ceux-ci présentent des règles basiques, sont faciles à jouer et conçus comme objets d’apprentissage de sorte qu’il soit aisé pour l’étudiant de percevoir les informations essentielles et que leur pratique soit bénéfique pour l’apprentissage (Frazer, Argles, & Wills, 2007). La gamification, à savoir la transposition des principes issus de l’univers du jeu au domaine de l’éducation (Deterding, Dixon, Khaled, & Nacke, 2011), ne porte donc pas ici sur des jeux de simulation immersifs mais vise plus réalistement la transposition à des activités d’apprentissage d’un certain nombre de principes et de leviers à l’œuvre dans des mini-jeux populaires tel que Candy Crush. La question de recherche qui a guidé l’expérience décrite ci-après concerne l’évaluation du potentiel pédagogique de l’utilisation d’un mini-jeu de ce type dans un cours de chimie générale en complément des supports pédagogiques plus classiquement utilisés en première année d’université. Concrètement, ce mini-jeu appelé « Atomica » se présente comme un quiz d’entrainement portant sur un chapitre réputé difficile du cours, l’atomistique. Ce quiz a fait l’objet de quatre versions activant chacune un nombre croissant d’éléments de gamification (indiqués en gras) décrits par plusieurs auteurs comme étant les « ingrédients » ou « building blocks » d’un bon jeu (Bunchball Inc., 2010; Dignan, 2011; Reeves & Read, 2013) : - La version contrôle du QCM se présente comme similaire aux évaluations formatives couramment utilisées à l’université ; - La version 1 segmente le QCM en six niveaux de difficulté ; - La version 2 ajoute un feedback automatisé aux niveaux de difficulté ; - La version 3 présente une version maximaliste de la gamification puisque, aux éléments précédents, elle ajoute un compte à rebours, des indices dont l’appel engendre une perte de points, un classement des meilleurs joueurs et un indicateur social (possibilité de se situer par rapport à la communauté de joueurs). Ce choix d’un dispositif graduel se justifie notamment par l’intérêt pour la détection d’un seuil à partir duquel l’ajout d’éléments de gamification fait basculer la perception d’un quiz habituel vers un artefact relevant du mini-jeu et générant ainsi un état de flow chez le joueur. Chaque version a été soumise à un groupe d’une trentaine d’étudiants, selon une procédure expérimentale contrôlée, avec pour objectif la collecte de données (en cours) sur : - L’état de flow ou expérience optimale engendré par chacune des versions (orientation comparative) défini comme un état subjectif de bien-être (Csikszentmihalyi, 1990) engendrant une immersion totale dans l’activité. Afin de mesurer le flow, une échelle spécifique aux jeux éducatifs (EGameFlow) développée en 2009 (Fu, Su, & Yu, 2009) a été utilisée dans le cadre de cette étude. - Une des trois composantes du modèle de la dynamique motivationnelle de Viau, la perception du sentiment de compétence (Bandura, 1993; Pajares, 2014) considéré comme un moteur essentiel à l’apprentissage et un déterminant de l’intérêt pour une discipline scolaire. - La performance à un test de connaissance soumis aux étudiants avant et après l’expérience de jeu. Les motivations sous-tendant le processus d’exploration des mini-jeux sont à chercher du côté d’un certain discours pédagogique qui prône l’inscription d’une dimension ludique dans les apprentissages en enseignement supérieur. Nourrie par ses résultats expérimentaux, la communication proposera un retour réflexif plus général sur la valeur, les limitations et les conditions de réalisation de ce discours. [less ▲]

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See detailGamma Dor and Gamma Dor - Delta Sct Hybrid Stars In The CoRoT LRa01
Hareter, M.; Reegen, P.; Miglio, A. et al

E-print/Working paper (2010)

A systematic search for gamma Dor and gamma Dor - delta Scuti hybrid pulsators was conducted on the CoRoT LRa01 Exo-archive yielding a total of 418 gamma Dor and 274 hybrid candidates. After an automatic ... [more ▼]

A systematic search for gamma Dor and gamma Dor - delta Scuti hybrid pulsators was conducted on the CoRoT LRa01 Exo-archive yielding a total of 418 gamma Dor and 274 hybrid candidates. After an automatic jump correction 194 and 167 respectively, show no more obvious jumps and were investigated in more detail. For about 25\% of these candidates classification spectra from the Anglo-Australian Observatory (AAO) are available. The detailed frequency analysis and a check for combination frequencies together with spectroscopic information allowed us to identify I) 34 gamma Dor stars which show very different pulsation spectra where mostly two modes dominate. Furthermore, a search for regularities in their oscillation spectra allowed to derive recurrent period spacings for 5 of these gamma Dor stars. II) 25 clear hybrid pulsators showing frequencies in the gamma Dor and delta Sct domain and are of A-F spectral type. [less ▲]

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See detailGamma Emitting Radionuclides in Soils from Selected Areas in Douala-Bassa Zone, Littoral Region of Cameroon
Ndontchueng Moyo, Maurice; Mekongtso Nguelem, Eric Jilbert; Augustin, Simo et al

in Hindawi Publishing Corporation (2014), 2014

A study of natural radioactivity levels in some composites of eighteen soil samples selected within Douala-Bassa zone of Littoral Region has been evaluated. The samples were analysed using gamma ... [more ▼]

A study of natural radioactivity levels in some composites of eighteen soil samples selected within Douala-Bassa zone of Littoral Region has been evaluated. The samples were analysed using gamma spectrometry based broad energy germanium detector (BEGe 6350). The activity profile of radionuclide shows low activity across the studied areas. The obtained mean values of 226Ra, 232Th, and 40K in the two campuses were 25.48 Bq/kg, 65.96 Bq/kg, and 39.14 Bq/kg for Campus 1 and 24.50 Bq/kg, 66.71 Bq/kg, and 28.19 Bq/kg for Campus 2, respectively. In terms of health analysis, some radiation health hazard parameters were calculated within the two campuses. The mean values of radium equivalent activity were 122.81 Bq/kg and 122.08 Bq/kg, absorbed dose rate in air was 99.13 nGy/h and 98.18 nGy/y, annual outdoor effective dose was 0.12 mSv/y and 0.12 mSv/y, and external health hazard index was 0.34 and 0.33 in Campus 1 and Campus 2, respectively. These health hazard parameters were seen to be below the safe limit of UNSCEAR 2000 except the absorbed dose rate in air and the annual outdoor effective doses which are relatively high compared to the values of 60 nGy/h and 0.07 mSv/y. These results reveal no significant radiological health hazards for inhabitance within the study areas. [less ▲]

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See detailGamma interferon production and plasma concentrations of pregnancy-associated glycoproteins 1 and 2 in gestating dairy cows naturally infected with Neospora caninum.
Serrano-Perez, B; Garcia-Ispierto, I; Melo de Sousa, Noelita ULg et al

in Reproduction in Domestic Animals (2014), 49(2), 275-280

Gamma interferon (IFN-γ) production and cross-breed pregnancy have been attributed a role in protecting dairy cows infected with Neospora caninum against abortion. Plasma levels of pregnancy-associated ... [more ▼]

Gamma interferon (IFN-γ) production and cross-breed pregnancy have been attributed a role in protecting dairy cows infected with Neospora caninum against abortion. Plasma levels of pregnancy-associated glycoproteins-1 (PAG-1) are a marker of placental/foetal well-being and of PAG-2 is an abortion risk indicator in chronically N. caninum-infected animals. The present study examines, in cross-breed pregnancies, interactions between IFN-γ production and levels of PAG-1 and PAG-2 in non-aborting naturally Neospora-infected dairy cows. Data were obtained from 60 pregnant Holstein-Friesian cows: 44 Neospora-seropositive and 16 Neospora-seronegative; 12 became pregnant using Holstein-Friesian semen and 48 using Limousin semen. Blood samples were collected on Days 40, 90, 120, 150, 180 and 210 of gestation. Gamma interferon was only detected in the plasma of nine of the 44 Neospora-seropositive cows, all of them became pregnant using Limousin semen. Through GLM procedures, in cows inseminated with Limousin semen and Neospora-seropositive cows showing no IFN-γ production, PAG-1 concentrations were high and increased throughout gestation compared to the levels detected in cows inseminated with Holstein-Friesian semen and Neospora-seropositive cows producing IFN-γ, respectively. In Neospora-seronegative cows and in Neospora-seropositive cows showing no IFN-γ production, significantly increased PAG-2 concentrations were observed on gestation Day 120. Our findings indicate that IFN-γ production correlates negatively and the production of antibodies against N. caninum is uncorrelated with plasma PAG concentrations during gestation in Neospora-infected dairy cows. Accordingly, IFN-γ production could be linked to the transplacental migration of tachyzoites, which may cause a reduction in PAG levels. [less ▲]

Detailed reference viewed: 20 (6 ULg)