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See detailResistance tables for standardized joints in accordance with EN 1993-1-8
Weynand, Klaus; Oerder, Ralf; Demonceau, Jean-François ULg

in Dubina, Dan; Grecea, Daniel (Eds.) CONNECTIONS VII proceedings (2012)

Publications containing resistance tables for joints in steel structures have been published in the last decades in various European countries. However, most of those publications provide joint ... [more ▼]

Publications containing resistance tables for joints in steel structures have been published in the last decades in various European countries. However, most of those publications provide joint resistances according to the design rules of national standards or according to the ENV version of Eurocode 3. The present paper refers to two new publications containing resistance tables in accordance with the new Eurocode 3 Part 1.8 (EN 1993-1-8). One of these two publications is devoted to joints with open sections including simple joints and moment resistant joints. One type of connection, traditionally used in Germany, but more and more also used in other European countries, is the end-plate connection with four bolts in a horizontal row. This connection type is not directly covered by Eurocode 3. The paper describes briefly the design model for this specific type of connection which is fully in accordance with the design methods of Eurocode 3. The second publication is of particular interest for practitioners because it is the first design tool dealing with hollow section joints in lattice structures. The paper discusses the practical impact of such resistance tables and it reports on some observations using the Eurocode 3 design rules for hollow section joints. [less ▲]

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See detailApprentissage de la proportionnalité par la confrontation à la non-proportionnalité via des manipulations
Henry, Valérie ULg; Lambrecht, Pauline

in Actes du Colloque EMF 2012 (2012)

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See detailBayesian methods for predicting LAI and soil moisture
Mansouri, Majdi ULg; Dumont, Benjamin ULg; Destain, Marie-France ULg

in Proceedings of the 11th International Conference on Precision Agriculture (2012)

The prediction errors of crop models are often important due to uncertainties in the estimates of initial values of the states, in parameters, and in equations. The measurements needed to run the model ... [more ▼]

The prediction errors of crop models are often important due to uncertainties in the estimates of initial values of the states, in parameters, and in equations. The measurements needed to run the model are sometimes not numerous or known with some uncertainty. In this paper, two Bayesian filtering methods were used to update the state variable values predicted by MiniSTICS model. The chosen state variates were the LAI (Leaf Area Index) of a wheat crop (Triticum aestivum L.) and the corresponding moisture content of two soil layers (0-20 cm and 30-50 cm). These state variates were estimated simultaneously with several parameters. The assessed filtering methods were the centralized Particle Filtering (PF) and the Variational Bayesian Filtering (VF). The former is known to be sensitive to the number of particles while the latter yields an optimal choice of the sampling distribution over the state variable by minimizing the Kullback-Leibler divergence. In fact, variational calculus leads to a simple Gaussian sampling distribution whose parameters (estimated iteratively) depends on the observed data. On basis of a case study, the VF method was found more efficient than the PF method. Indeed, with the VF, the Root Mean Square Error (RMSE) of the three estimated states was smaller and the convergence of the all parameters was ensured. [less ▲]

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See detailLa tutelle sur les pouvoirs locaux
Durviaux, Ann-Lawrence ULg

in Durviaux, Ann-Lawrence; Matagne, Geoffroy; Verjans, Pierre (Eds.) Le code de la démocratie locale et de décentralisation : enjeux et bilans politiques (2012)

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See detailLe Mystère dans l'Etalage. Mallarmé et la Réclame
Durand, Pascal ULg

in Guellec, Laurence; Hache-Brissette, Françoise (Eds.) Littérature et publicité de Balzac à Beigbeder (2012)

Le rapport de Mallarmé à la réclame en général est très contradictoire : d'un côté, opposition de principe, conforme à la position artiste ; de l'autre, intégration subtile mais aussi toute pratique à l ... [more ▼]

Le rapport de Mallarmé à la réclame en général est très contradictoire : d'un côté, opposition de principe, conforme à la position artiste ; de l'autre, intégration subtile mais aussi toute pratique à l'esthétique et au montage éditorial du Livre. Comme le montre par excellence un article tel qu’« Étalages », parmi d'autres proses critiques réservées au livre et à l'édition, ce rapport est inséparable d'une réflexion sur les effets de promotion et d'annonce autant que sur les discours de crise et de récession propres au champ éditorial de la fin du XIXe siècle. Un champ où le livre — ou bien encore la « mentale denrée » — n'échappe pas moins que d'autres denrées aux fantasmagories mystérieuses de la marchandise. [less ▲]

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See detailEstimation of genetic parameters for longitudinal measurements of feed intake in Piétrain sire lines
Dufrasne, Marie ULg; Jaspart, Véronique; Wavreille, José et al

in Book of Abstracts of the 63rd Annual Meeting of the European Association of Animal Science (2012)

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See detailAnalgésie préemptive du porcelet avant la castration: comparaison de l'effet de l'acide tolfénamique et du méloxicam sur la douleur et le stress
Wavreille, José; Danard, Maylis ULg; Servais, Vincent et al

in 42èmes Journées de la Recherche Porcine (2012)

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See detailGaseous emissions from fattening pigs offered an ad libitum high-fibre diet and kept on fully slatted floor: preliminary results
Philippe, François-Xavier ULg; Laitat, Martine ULg; wavreille, José et al

in Proceedings of the 2nd Scientific Meeting of the Faculty of Veterinary Medicine (Liège – Belgium) (2012)

According to the literature, the diet composition of livestock can influence polluting gas emissions from agriculture. The aim of this preliminary study was to measure gaseous emissions from fattening ... [more ▼]

According to the literature, the diet composition of livestock can influence polluting gas emissions from agriculture. The aim of this preliminary study was to measure gaseous emissions from fattening pigs offered an ad libitum high-fibre diet (HFD) and kept on fully slatted floor. A batch of 24 fattening pigs was divided into two homogeneous groups randomly allocated to a treatment: conventional cereals-based diet or sugar beet pulpbased diet (HFD). With HFD, a significant decrease of animal performance was observed (837 vs. 962 g for the average daily gain). With pigs offered HFD, gaseous emissions per pig were significantly lower for NH3 (-30%, 6.64 vs. 9.47 g/d; P<0.05) and significantly greater for CH4 (+40%, 6.46 vs. 4.60 g/d; P<0.05). The emissions of N2O (0.34 g/d), CO2equivalent (0.27 kg/d), CO2 (1.68 kg/d) were not significantly influenced by the diet. Due to a more important microbial activity with HFD, the lower NH3-emissions could be attributed to the shift of a part of excreted nitrogen from urine (as urea) to faeces (as protein form), and to a lower slurry pH explained by the increase of volatile fatty acid content. The higher CH4-emissions could be explained by a greater production in the digestive tract and in the slurry due to fibre fermentations. In conclusion, HFD allowed decreasing NH3- and increasing CH4-emissions. However, in terms of climate change, this increase was offset by the decrease of indirect N2O-emissions due to NH3-emission decrease, as indicated by the similar CO2equivalent-emissions in the two groups. [less ▲]

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See detailIl carteggio guicciardiniano, 'fabbrica' della Storia d'Italia
Moreno, Paola ULg

in Claudia, Berra; Annamaria, Cabrini (Eds.) La Storia d’Italia di Guicciardini e la sua fortuna (2012)

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See detailLes différentes fonctions de la résolution de problèmes sont-elles présentes dans l’enseignement primaire en Communauté française de Belgique ?
Demonty, Isabelle ULg; Fagnant, Annick ULg

in Dorier, J-L.; Coutat, S. (Eds.) Enseignement des mathématiques et contrat social : enjeux et défis pour le 21 e siècle – Actes du colloque EMF2012 (2012)

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See detailSystems Engineering applied to a Building Construction Systems Design Methodology
Schmitz, Dimitri ULg

in Doctoral Workshop of the international conference IFIP WG 5.1 PLM12 (2012)

This paper presents a new way to design innovative Building Construction System[BCS]. The BCS is defined as a set of technical specifications of a pre- engineered building. The interest of the use of a ... [more ▼]

This paper presents a new way to design innovative Building Construction System[BCS]. The BCS is defined as a set of technical specifications of a pre- engineered building. The interest of the use of a BCS is to reuse the same specifications in several building constructions. These specifications can than be studied in more detail with higher design budgets. [less ▲]

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See detailLexicométrie pour l'analyse qualitative. Pourquoi et comment résoudre le paradoxe ?
Lejeune, Christophe ULg; Bénel, Aurélien

in Dister, Anne; Longrée, Dominique; Purnelle, Gérald (Eds.) Actes des 11es Journées internationales d'Analyse statistique des Données Textuelles (2012)

Using text statistics for qualitative analysis is surely a paradox - counting words in an approach where "numbers doesn't count". Hence, we were stunned by the repeated expectation of text mining features ... [more ▼]

Using text statistics for qualitative analysis is surely a paradox - counting words in an approach where "numbers doesn't count". Hence, we were stunned by the repeated expectation of text mining features from the users of our qualitative analysis platform. Reluctant at first to methodological hybridizations that could be seen as flawed, we then had to admit that even the founders of qualitative analysis envisioned qualitative ways to use statistics. Counts cannot be regarded as proofs by qualitative analyzers, but as clues for an interpretation, as incentives to look closer at the materials. To achieve this goal, we designed a new visualization of text statistics,displayed in the text without any numbers nor tables. [less ▲]

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See detailPerformance of lung recruitment model in healthy anesthetised pigs
Chiew, YS; LAMBERMONT, Bernard ULg; JANSSEN, Nathalie ULg et al

in Proceedings of the World Congress on Medical Physics and Biomedical Engineering 2012 (2012)

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See detailTowards TCAM-based Scalable Virtual Routers
Luo, Layong; Xie, Gaogang; Uhlig, Steve et al

in ACM CoNEXT 2012 Proceedings (2012)

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See detailPredicting the spatial distribution of population based on impervious surface maps and modeled land use change
Cornet, Yves ULg; Binard, Marc ULg; Ledant, Martin et al

in Perakis, Konstantinos G.; Moysiadis, Athanasios K. (Eds.) European Association of Remote Sensing Laboratories 32nd EARSeL Symposium Proceedings Advances in Geosciences Mykonos Island, Greece, 21 May - 24 May 2012 (2012)

Land use and changes in the spatial distribution of population are spatially and temporally linked and have an obvious impact on the urban environment. For instance, they influence the mobility and ... [more ▼]

Land use and changes in the spatial distribution of population are spatially and temporally linked and have an obvious impact on the urban environment. For instance, they influence the mobility and accessibility and play an important role in waste water management. This forecasting of the spatial distribution of population is thus a critical issue in planning. In order to allow this forecasting we have adjusted a multiple regression model to estimate the population distribution in function of land-use. The originality in our modeling strategy is the use of sealed surface proportion maps as weighting factor assuming that sealed surface proportion is a proxy of population density. The data exploited to adjust the parameters of the model are three time-series of landuse maps from the EU-MOLAND, census data and medium and high resolution remotely sensed images. We made use of these images in a spectral unmixing procedure that provides the sealed surface proportion maps. In the model, the population was normalized in order to get a model that is independent of time and space. This is required for prediction and spatial extrapolation which assumes a temporally and spatially stable relationship between land use, imperviousness and population density. We validated the model by means of a population disaggregation/re-aggregation procedures and tested its robustness regarding the resolution because predicted sealed surface proportion and predicted landuse maps using the calibrated EU-MOLAND model are generated at lower resolution (200 m) than the resolution used in the model adjustment. The results described in this paper regard the urban zone of Dublin. [less ▲]

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See detailThe role of the salience of fluency in recognition memory in Alzheimer’s disease
Bastin, Christine ULg; Salmon, Eric ULg; Willems, Sylvie ULg

in Proceedings of the First joint meeting of the Belgian Association for Psychological Sciences (BAPS) and the Sociedad Española de Psicología Experimental (SEPEX) (2012)

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See detailEvaluation de l'atteinte motoneuronale dans la sclérose latérale amyotrophique par la technique MUNE
WANG, François-Charles ULg; LE FORESTIER, Nadine; BOUCHE, Pierre

in POUGET, Jean; ATTARIAN, Shahram (Eds.) ENMG 2012 (2012)

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See detailMémoire associative dans le vieillissement normal : Effet de l’unification des associations
Simon, Jessica ULg; Collette, Fabienne ULg; Genon, Sarah ULg et al

in Proceedings of the XIIème Colloque International sur le Vieillissement Cognitif (2012)

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See detailRelation entre la réserve cognitive et le métabolisme cérébral au repos dans le vieillissement normal.
Bastin, Christine ULg; Yakushev, Igor; Bahri, Mohamed Ali ULg et al

in Proceedings of the XIIème Colloque International sur le Vieillissement Cognitif (2012)

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See detailPhysiological Relevance of a Minimal Model in Healthy Pigs Lungs
Chiew, YS; Desaive, Thomas ULg; LAMBERMONT, Bernard ULg et al

in Proceedings of BMS 2012 (2012)

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See detailStatistical description of the internal geometry of a polymer textile composite using micro-computed tomography
Vanaerschot, Andy; Cox, Brian; Blacklock, Matthew et al

in Proceedings book European Conference on Composite Materials 2012 (2012)

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See detailDroit des marchés publics et environnement
Durviaux, Ann-Lawrence ULg

in La vie des entreprises au regard de la protection de l'environnement: entre contraintes et opportunités (2012)

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See detailDétection automatique des textes épistolaires du corpus néo-égyptien : méthodes exploitant la récurrence de motifs discriminants
Gohy, Stéphanie ULg; Martin Leon, Benjamin ULg

in Dister, Anne; Longrée, Dominique; Purnelle, Gérald (Eds.) Actes des 11es Journées internationales d'Analyse statistique des Données Textuelles (2012)

In this paper, we will develop two methods allowing an automatic detection of the Late-Egyptian epistolary genre. Among the criteria which could be mobilized to identify different genres within a corpus ... [more ▼]

In this paper, we will develop two methods allowing an automatic detection of the Late-Egyptian epistolary genre. Among the criteria which could be mobilized to identify different genres within a corpus, the study of “motifs” (“patterns”) represents a particularly promising approach that has already been successfully exploited for a corpus of Latin texts. In our communication, we suggest applying this process to the Late Egyptian corpus, and more particularly to the epistolary genre. Two methods will be applied to our corpus to identify whether or not particular documents belong the epistolary genre. We shall begin by explaining the principle of functioning of these two methods. The results obtained will then be analyzed; we shall try to understand why certain documents were improperly classified. [less ▲]

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See detailTopography evaluation methods for concrete substrates: parametric study
Courard, Luc ULg; Garbacz, Andrzej; Bissonnette, Benoît

in Alexander, Mark (Ed.) Concrete Repair, Rehabilitation and Retrofitting III (2012)

Research projects performed at the University of Liege, Laval University and the Warsaw University of Technology have pointed out the importance of taking care about the surface roughness of concrete ... [more ▼]

Research projects performed at the University of Liege, Laval University and the Warsaw University of Technology have pointed out the importance of taking care about the surface roughness of concrete substrate with regards to the adhesion of repair materials. This paper wants to make a State-of-Art on this specific problem: surfometry methods, interface analysis, adhesion measurements, …etc are presented, interpreted and compared. Surfology, which is a more wide concept, contributes to understand what will make the contact effective or not, and allow interactions of variable intensities between the materials. Different scales of observation – micro to macro - are needed to exactly represent what happens when materials are put into contact. [less ▲]

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See detailSulla ‘filologia dei papiri virgiliani’: i PNess. II 1 e PNess. II 2
Scappaticcio, Maria Chiara ULg

in Actes du 26e Congrès International de papyrologie, Geneve 2010 (2012)

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See detailKnowledge of the Concept Light Rail Transit: Determinants of the Cognitive Mismatch between Actual and Perceived Knowledge
Creemers, Lieve; Cools, Mario ULg; Tormans, Hans et al

in Proceedings of the 13th International Conference on Travel Behaviour Research (2012)

The Flemish public transport company “De Lijn” is planning the development of a new Light Rail network for medium range distance trips (10 to 40km). A challenge exists in the fact that the concept of ... [more ▼]

The Flemish public transport company “De Lijn” is planning the development of a new Light Rail network for medium range distance trips (10 to 40km). A challenge exists in the fact that the concept of Light Rail Transit (LRT) is relatively unknown in Flanders. Therefore this paper explores the knowledge of the concept ‘Light Rail Transit’ among the Flemish population. To investigate the knowledge, two separate binary logit models are estimated to explore the determinants of the overall actual knowledge and the determinants of a cognitive mismatch. The results show that age, sex, public transit use, household size, bicycle ownership and weekly number of shopping activities contribute significantly to the overall actual knowledge of the LRT-concept. Besides, cognitive mismatch is only significantly affected by age and gender. Moreover, the results reveal a serious lack of knowledge of the concept of LRT. Consequently, a successful implementation of the LRT-system in Flanders may be jeopardized and thus it is of crucial importance to raise the level of knowledge. A first option is knowledge acquisition based on experience of the transit network. In this view, it can be a good idea to develop “travel-one-day-for-free” marketing actions. Second, it is important to provide information to the travelers by contriving information campaigns based on the determinants identified by the models. How the campaigns should be constructed from an intrinsic and psychological point of view and deliberating between the methods of communication to reach the various target groups are some important considerations for further research. [less ▲]

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See detailNumerical modeling of a 3 point bending test of a reinforced concrete beam using a second gradient theory
Jouan, Gwendal ULg; Kotronis, Panagiotis; Collin, Frédéric ULg

in Eberhardsteiner, J. (Ed.) ECCOMAS 2012 - European Congress on Computational Methods in Applied Sciences and Engineering, e-Book Full Papers (2012)

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See detailWords of thieves. How to keep the record straight
Winand, Jean ULg

in Cromwell, Jennifer; Grossman, Eitan (Eds.) Beyond Free Variation : Scribal Repertoires in Egypt from the Old Kingdom to the Early Islamic Period (2012)

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See detailIncreased number of mucocytes in Aiptasia pallida following bleaching
Fransolet, David ULg; Herman, Anne-Catherine; Roberty, Stéphane ULg et al

in Yellowlees, D; Hughes, T P (Eds.) proceedings of the 12th International Coral Reef Symposium (2012)

While many studies have investigated histological changes occurring in cnidarians during bleaching, only a few have focused on continuing changes in tissues during the recovery period. Here, we examine ... [more ▼]

While many studies have investigated histological changes occurring in cnidarians during bleaching, only a few have focused on continuing changes in tissues during the recovery period. Here, we examine the response of the sea anemone Aiptasia pallida to a transient elevation of water temperature combined with high illumination. Following 30h of exposure to stress conditions (33°C and 1900μE/m2.s), anemones show a significant reduction in their Symbiodinium concentration followed by a progressive recovery over 8 weeks. Histological analyses show an increase in cell proliferation in both ectoderm and gastroderm tissues one day following the stress. This increased proliferation seems to be sustained after 3 weeks before returning to normal after 8 weeks. Moreover, our results show a progressive increase in the number of ectodermal mucocytes over 3 weeks before returning to a normal level after 8 weeks. While the new cells formed in the gastroderm would most likely host new Symbiodinium, the fate of new cells in the ectoderm is still not completely understood. These new cells may contribute to the increased number of mucocytes which could eventually help shift the feeding mode temporarily to a heterotrophic state until restoration of the symbiosis. [less ▲]

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See detailScreening, post-screening and confirmation analysis of antibiotics in pork and chicken meat marketed in Vietnam.
Pham Kim, Dang; Degand, Guy ULg; Douny, Caroline ULg et al

in EuroResidue VII: conference on residues of veterinary drugs in food (2012)

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See detailSpiel und Zufall in Gotthold Ephraim Lessings 'Lustspiel' "Minna von Barnhelm"
Küpper, Achim ULg

in Küpper, Achim; Gerrekens, Louis (Eds.) Hasard. Der Spieler in der deutschsprachigen Literaturgeschichte (2012)

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See detailWorking fluid selection and operating maps for Organic Rankine Cycle expansion machines
Quoilin, Sylvain ULg; Declaye, Sébastien ULg; Legros, Arnaud ULg et al

in Proceedings of the 21st International Compressor Conference at Purdue (2012)

Fluid selection for the Organic Rankine Cycle has been the object of an abundant literature. Most of the scientific publications focus on the cycle thermodynamic efficiency in order to select the best ... [more ▼]

Fluid selection for the Organic Rankine Cycle has been the object of an abundant literature. Most of the scientific publications focus on the cycle thermodynamic efficiency in order to select the best candidate. However, other thermodynamics properties, such as molar mass, or vapor density condition the whole design of the cycle, and its cost. For example, the molar mass influences the number of stages required in the case of an axial turbine; the volume ratio between expander supply and exhaust conditions the possibility to use a volumetric expander (whose internal volume ratio is limited); the vapor density at the expander exhaust determine the size of the expander, and of the condenser; etc. This paper considers a whole range of ORC applications, in terms of power (from the kW-scale to the multi-MW plants), heat source temperature (from 90°C to more than 300°C) or heat source nature (solar, biomass, waste heat recovery, geothermy, etc.). For each of these applications, a screening of the available fluids is performed, and their thermodynamics performance are compared with respect to the foreseen application. A detailed analysis of the most common expansion machines is then conducted, by comparing their respective operating maps for each fluid and for each application type. The considered expansion machines are the radial-inflow turbine, the screw expander, and the scroll expander, since they are the most widely used in commercial applications and/or in scientific literature. [less ▲]

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See detail- La force probante de la preuve irrégulièrement recueillie : Antigone aurait-elle perdu son âme ?
Jacobs, Ann ULg

in Saint-Pau, Jean Christophe; Bergeaud, Aurélie (Eds.) La preuve pénale – Problèmes contemporains en droit comparé (2012)

Jurisprudence belge en matière de preuve illégale et irrégulière.

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See detailEstimating afterload, systemic vascular resistance and pulmonary vascular resistance in an intensive care setting
Stevenson, D; Revie, J.; Chase, JG et al

in Proceedings of BMS2012 (2012)

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See detailLa compatibilité du métier de secrétaire communal avec d’autres fonctions : aperçu de lege lata, de lege peractura et de lege ferenda
Donnay, Luc ULg

in L'indépendance du secrétaire communal : utopie ou réalité? (2012)

Il s'agit d'un examen de la compatibilité du métier de secrétaire communal avec d'autres fonctions au regard de la situation législative actuelle et des projets de réformes en cours.

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See detailLa Vierge à la cerise : une invention léonardesque dans la peinture anversoise de la première moitié du XVIe siècle
Fagnart, Laure ULg

in Dekoninck, Ralph (Ed.) Relations artistiques entre Italie et anciens Pays-Bas (XVIe-XVIIIe siècles). Bilans et perspectives (2012)

Cette étude se concentre sur une invention léonardesque – la Vierge aux cerises – que les peintres flamands de la première moitié du XVIe siècle, spécialement Joos van Cleve et les membres de son atelier ... [more ▼]

Cette étude se concentre sur une invention léonardesque – la Vierge aux cerises – que les peintres flamands de la première moitié du XVIe siècle, spécialement Joos van Cleve et les membres de son atelier, ont abondamment copié. Max J. Friedländer pensait que toutes ces versions flamandes remontaient à une œuvre attribuée à Jean Gossart. En réalité, comme Alessandro Parronchi l’a déjà montré, il convient de les rapprocher d’une peinture de Giovanni Pedrini, dit Giampietrino, elle-même influencée par un dessin de Léonard de Vinci. Mais le véritable enjeu de l’enquête n’est pas de répertorier toutes les versions connues de cette composition. Il convient plutôt de s’intéresser aux modalités de circulation des formes : une telle investigation permet d’une part de reconstituer l’histoire et la réception du motif étudié, d’autre part de déterminer par quel biais les peintres flamands ont découvert les inventions de Léonard. À cet égard, nous avons souligné le rôle de Jean Gossart, qui, en 1508, accompagne Philippe de Bourgogne à Rome, où il a pu rencontrer Cesare da Sesto et échanger avec lui dessins et esquisses, favorisant de cette façon les relations entre productions artistiques italiennes et septentrionales. [less ▲]

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See detailHydro-mechanical modelling of the development of preferential gas pathways in claystone
Gerard, Pierre ULg; Harrington, Jon; Charlier, Robert ULg et al

in Mancuso, Claudio; Jommmi, Cristina; D'Onza, Francesca (Eds.) Unsaturated Soils: Research and Applications (volume 2) (2012)

During long-term repository of radioactive waste in argillaceous formation, the gas migration in the host formation and in the engineered barriers is a crucial issue, because it could affect the safety ... [more ▼]

During long-term repository of radioactive waste in argillaceous formation, the gas migration in the host formation and in the engineered barriers is a crucial issue, because it could affect the safety function of the clay barriers. Gas migration tests on Callovo-Oxfordian argillite have been performed by the British Geological Survey. The observations show that gas migration is often accompa-nied by the development of preferential pathways, which propagate through the sample. Hydro-mechanical numerical modelling of these tests is performed. It ap-pears that a continuum approach to the movement of gas is not sufficient to repro-duce the experimental observations. A coupling between deformation of the me-dium, permeability and air entry pressure is proposed. The numerical results show that such coupling play an important role in a successful simulation of such gas flows. [less ▲]

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See detailImitative Learning for Real-Time Strategy Games
Gemine, Quentin ULg; Safadi, Firas ULg; Fonteneau, Raphaël ULg et al

in Proceedings of the 2012 IEEE Conference on Computational Intelligence and Games (2012)

Over the past decades, video games have become increasingly popular and complex. Virtual worlds have gone a long way since the first arcades and so have the artificial intelligence (AI) techniques used to ... [more ▼]

Over the past decades, video games have become increasingly popular and complex. Virtual worlds have gone a long way since the first arcades and so have the artificial intelligence (AI) techniques used to control agents in these growing environments. Tasks such as world exploration, con- strained pathfinding or team tactics and coordination just to name a few are now default requirements for contemporary video games. However, despite its recent advances, video game AI still lacks the ability to learn. In this paper, we attempt to break the barrier between video game AI and machine learning and propose a generic method allowing real-time strategy (RTS) agents to learn production strategies from a set of recorded games using supervised learning. We test this imitative learning approach on the popular RTS title StarCraft II® and successfully teach a Terran agent facing a Protoss opponent new production strategies. [less ▲]

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See detailSome advice for migrating to IFC
Delfosse, Vincent ULg; Schrayen, John ULg; Juchmes, Roland ULg et al

in Proceedings of the 17th International Conference on Computer-Aided Architectural Design Research in Asia (2012)

Nowadays, the BIM (Building Information Modeling) paradigm is a central topic in the CAAD community. Next to the commercial solutions, the IFC (Industry Foundation Classes) have emerged as the best open ... [more ▼]

Nowadays, the BIM (Building Information Modeling) paradigm is a central topic in the CAAD community. Next to the commercial solutions, the IFC (Industry Foundation Classes) have emerged as the best open standard candidate for BIM interoperability. Despite the efforts of the community for promoting IFC over the last 15 years, it seems that its practical adoption in real-life projects has been very limited. The goal of this article is to explore how useful IFC can be today and to provide the reader with some advice for an effective adoption of IFC. Over the last year, we have conducted a project aiming at acquiring a sound understanding of IFC. It was made of two complementary investigations. On one hand, we have focused on the commercial modeling tools and the IFC support they were offering. On the other hand, we have focused on the IFC-based software developments. We have developed a tool converting IFC files into a dedicated thermal assessment based model. We will summarize the experience we have acquired in this project into some advice for users migrating to IFC. Our goal is to confront the practical aspects of the IFC developments, with both the theoretical ambitions and the commercial support currently available. [less ▲]

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See detailDynamics of livestock production systems during the economic transformation period in Northern Vietnam : case study in Cam Giang District, Hai Duong Province
Han Quang, Hanh ULg; Vu Dinh, Ton; Lebailly, Philippe ULg

in Koonawootrittriron, S.; Suwanasopee, T.; Jattawa, D. (Eds.) et al The 15th AAAP Animal Science Congress "Improving Smallholder and Industrial Livestock Production for Enhancing Food Security, Environment and Human Welfare" : Proceedings, Vol. II. Abstracts (2012)

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See detailAuto-immune gastritis characteristics in a large series of patients with auto-immune thyroiditis.
VALDES SOCIN, Hernan Gonzalo ULg; TOME, M.; LUTTERI, Laurence ULg et al

in XXIVth Belgian Week of Gastroenterology 2012 - Abstract book (2012)

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See detailLa formation et la recherche sur la littérature de jeunesse en Belgique francophone
Delbrassine, Daniel ULg

in Butlen, Max; Lorant-Jolly, Annick (Eds.) Recherches et formations en littérature de jeunesse. Etat des lieux et perspective (2012)

Overview of the research on Children's literature in frenchspeaking Belgium

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See detailOn Psychologizing School
Notturni, Loris ULg

in Petrov, Vesselin (Ed.) Applied and Experimental Philosophy in the Knowledge Based Society East and West. Proceedings of XXVI Varna International Philosophical School (2012)

What is school ? Though this question is philosophical – if we keep in mind the historical tight bind between philosophy and teaching – it is nowadays considered exclusively as psycho-sociological matter ... [more ▼]

What is school ? Though this question is philosophical – if we keep in mind the historical tight bind between philosophy and teaching – it is nowadays considered exclusively as psycho-sociological matter. In educational relations (e.g. between children and their teacher), psychology is the vantage point : then pedagogy is above all psycho-pedagogy. At the same time we cannot today in Belgium deny a heavy, deep crisis in fundamental education any more. This situation may sanction pessimistic behaviors which often lead to inactivity and passivity. For my part, I would say this crisis is characterized by a current psychological aporia. So I must ask a new question : What should school be ? From the Kantian interrogation about the requirements of education – which is an art, not a science - I will draw some philosophical and pragmatic ways to overcome this psychological puzzle. [less ▲]

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See detailGenome-wide association study for milk fatty acid composition using cow versus bull data
Bastin, Catherine ULg; Gengler, Nicolas ULg; Soyeurt, Hélène ULg et al

in Book of Astracts of the 63rd Annual Meeting of the European Federation of Animal Science (2012)

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See detailLa nouvelle mesure générale « anti-abus » en matière d’impôts sur les revenus, de droits d’enregistrement et de droits de succession
Bourgeois, Marc ULg; Nollet, Aymeric

in Leleu, Yves-Henri (Ed.) Chroniques notariales (2012)

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See detailOrbital rendez-vous using differential drag in the QB50 constellation
Dell'Elce, Lamberto ULg; Kerschen, Gaëtan ULg

in Proceedings of the AIAA/AAS Astrodynamics Specialist Conference (2012)

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See detailInnovative bolted beam-to-column joints for seismic resistant building frames
Coméliau, Ludivine ULg; Demonceau, Jean-François ULg; Jaspart, Jean-Pierre ULg

in Dubina, Dan; Grecea, Daniel (Eds.) CONNECTIONS VII proceedings (2012)

In the present paper, innovative joint configurations leading to more economical solutions for full-strength beam-to-column joints for seismic building frames are detailed. The specificities of these ... [more ▼]

In the present paper, innovative joint configurations leading to more economical solutions for full-strength beam-to-column joints for seismic building frames are detailed. The specificities of these joints are due to the fact that (i) the column is made of high strength steel while the beam are made of mild carbon steel and (ii) the design of some components allows partially neglecting the overstrength factor. Also, methods for the characterisation of specific joint components not directly covered by the Eurocode recommendations are proposed. [less ▲]

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See detailThree-Dimensional Large Starin Elasto-Viscoplastic Constitutive Model.
Ribero, Melisa; Careglio, Claudio; Garcia Garino, Carlos et al

in Cardona, A (Ed.) Proceedings of MECOM 2012, Mecanica Computational Vol XXXI (2012)

In a previous work, J. Ponthot et al., Mec Comput, XXIV:441-454 (2005), have extended a large strain elastoplastic constitutive model based on hyperelasticity and multiplicative decomposition of ... [more ▼]

In a previous work, J. Ponthot et al., Mec Comput, XXIV:441-454 (2005), have extended a large strain elastoplastic constitutive model based on hyperelasticity and multiplicative decomposition of deformation gradient tensor, to viscous case based on a contribution of the same main author . In this way a very useful tool has been obtained, able to deal with both rate dependent and rate independent problems. In this work a brief review of theoretical details is presented and numerical implementation of the model in a three-dimensional finite element code (SOGDE3D) is performed. The finite element code was developed for solving elastoplasticity in solids under large strains in three-dimensional space. A Newton Raphson scheme has been used to solve the non-linear consistency condition in order to compute the viscoplastic multiplier. An analysis of large viscoplastic deformation problems under plane strain condition are provided in order to test the proposed model. A comparison between two and three-dimensional versions of SOGDE code is achieved to validate the implementation and some results available in the literature helped to confirm the correct recovery of elastoplastic response by the viscoplastic model. [less ▲]

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See detailInvestigation of the glucose metabolism of the chicken by embryonic injection of tolbutamide
Franssens, Lies; Wang, Yufeng; Willems, Els et al

in Investigation of the glucose metabolism of the chicken by embryonic injection of tolbutamide (2012)

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See detailIntegration of InGaAs Channel n-MOS Devices on 200mm Si Wafers Using the Aspect-Ratio-Trapping Technique
Waldron, Niamh; Wang, Gang; Nguyen, Ngoc Duy ULg et al

in 221st ECS Meeting (2012)

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See detailKinshasa en proie à l’érosion en ravine : inventaire cartographique et impact socioéconomique
Makanzu, Fils; Ozer, Pierre ULg; Moeyersons, Jan et al

in Colloque international "Géomatique et gestion des risques naturels" en hommage au Professeur André Ozer - Livre de résumés (2012)

Kinshasa, l’une des grandes villes de l’Afrique subsaharienne, a vu sa population passer de 404173 habitants en 1957 à près de 8 millions d’habitants en 2007, soit une augmentation d’environ 20 fois en 50 ... [more ▼]

Kinshasa, l’une des grandes villes de l’Afrique subsaharienne, a vu sa population passer de 404173 habitants en 1957 à près de 8 millions d’habitants en 2007, soit une augmentation d’environ 20 fois en 50 ans seulement. La ville s’est entre-temps agrandie, s’étalant de 94 à 443 km² au cours de la même période. A l’aide de la télédétection et d’un SIG, les ravins d’au moins 5 mètres de large ont été cartographiés à partir d’un couple stéréoscopique SPOT 2006/2007 dans la haute ville de Kinshasa. Cet inventaire a permis la détermination de 308 ravins totalisant une longueur cumulée de 95 km qui occupent une superficie de 2 km² et dont la profondeur moyenne et la largeur moyenne sont respectivement de 7 et 21 mètres. La densité de ravinement est de 0,4 km/km². En imperméabilisant le sol et en concentrant de grandes quantités d’eau de ruissellement, l’urbanisation a modifié le drainage naturel du sol et a augmenté l’aléa dans cette région où il existait déjà. Elle serait donc la cause principale de l’érosion en ravine qui déchire les versants sableux de Kinshasa. [less ▲]

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See detail3D Analysis of Normal and Pathological Gait Based on Low-Cost Wireless Accelerometers
Boutaayamou, Mohamed ULg; Schwartz, Cédric ULg; Bruls, Olivier ULg et al

in URSI Benelux Forum 2012 “Antennas: multiple designs, multiple applications” (2012)

We describe the principle and use of a new low-cost, wireless, 3-axis accelerometer-based device that records acceleration signals and automatically analyses them to characterize normal and pathological ... [more ▼]

We describe the principle and use of a new low-cost, wireless, 3-axis accelerometer-based device that records acceleration signals and automatically analyses them to characterize normal and pathological gait. [less ▲]

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See detailMethacholine bronchoprovocation test:a useful ancillary test for diagnosis of hyperresponsiveness in horses ?
Frippiat, Thibault ULg; Frellstedt, Linda ULg; Bustin, Jean-Clément ULg et al

in Proceedings of the European Veterinary Conference - Voorjaarsdagen (2012)

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See detailEinleitung
Küpper, Achim ULg

in Gerrekens, Louis (Ed.) Hasard. Der Spieler in der deutschsprachigen Literaturgeschichte (2012)

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See detailGreen building design: A step towards sustainable habitat
Singh, Manoj Kumar ULg; Mahapatra, Sadhan; Atreya, S.K.

in Kataki; Borah (Eds.) Renewable Energy and Sustainable Development (2012)

Energy, built environment and thermal comforts are closely inter-related. The unprecedented growth in building sector due to growth in population and enhanced thermal comfort standards leads to more ... [more ▼]

Energy, built environment and thermal comforts are closely inter-related. The unprecedented growth in building sector due to growth in population and enhanced thermal comfort standards leads to more primary energy consumption and consequently increases the green house gas (GHG) emissions to the environment. The construction industry in India is one of the largest economic activities and is growing at an average rate of 9.5% as compared to the global average of 5%. Buildings are the major consumer of energy in their construction, operation and maintenance. In India building sector accounts 30-40% of total primary energy consumption and more than 30% of electricity. While the growth is imminent, it is imperative that the developments need to happen in an environmentally sustainable manner. In this context, energy efficient building, climate-responsive building or green buildings designs have great impacts on conservation of natural resources, energy efficiency, better waste management, water use efficiency and reductions in GHG emissions. In this article, the various measures taken worldwide to reduce the energy consumption and carbon footprint of the buildings through green building approach are discussed. The present state of the green building initiatives, green building rating and certification procedures in India are also discussed. [less ▲]

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See detailAspects formels de la poésie de Rose-Marie François
Purnelle, Gérald ULg

in Pagnoulle, Christine (Ed.) Rose-Marie François : des mots et des langues (2012)

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See detailAssociative memory in normal aging: The effect of unitization
Simon, Jessica ULg; Collette, Fabienne ULg; Genon, Sarah ULg et al

in Proceedings of the first joint meeting of the Belgian Association for Psychological Sciences (BAPS) and the Sociedad Española de Psicología Experimental (SEPEX) (2012)

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See detailCopropriété et voisinage
Lecocq, Pascale ULg; Boufflette, Sophie ULg

in Lecocq, Pascale; Dambre, Maarten (Eds.) Chronique de droit à l'usage des juges de paix et de police 2012 (2012)

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See detailComposite modeling to enhance hydraulic structures studies
Erpicum, Sébastien ULg; Dewals, Benjamin ULg; Archambeau, Pierre ULg et al

in Proceedings of SimHydro 2012 (2012)

Physical modeling and numerical modeling are two efficient analysis approaches in hydraulic engineering. The interactive application of both methods is obviously the more effective response to most flow ... [more ▼]

Physical modeling and numerical modeling are two efficient analysis approaches in hydraulic engineering. The interactive application of both methods is obviously the more effective response to most flow problems analyses. Indeed, it enables combining the inherent advantages of both approaches, which are complementary, while being beneficial to the delays as well as the quality of the analysis. The paper presents the way composite modeling is applied for years at the HECE - Laboratory of Engineering Hydraulics (University of Liege) to enhance hydraulic structures studies. Besides numerical model validation for which experimental benchmarks constitute the first reliable data source, simultaneous application of both modeling approaches may be envisaged in three different ways. Composite modeling may be used to increase the scale factor of physical models by reducing the layout of the real structure to be modeled, to provide a better answer to specific problems than a single approach study or to maximize the efficiency of experimental tests by reducing the range of variation of the unknown parameters to be tested. For each of these three issues depicted in the paper, several examples show how the combined use of efficient numerical solvers together with physical scale models enables to increase the overall quality and scope of the analyses while decreasing the delays and possibly the costs. [less ▲]

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See detailNon-local damage-enhanced MFH for multiscale simulations of composites
Wu, Ling ULg; Noels, Ludovic ULg; Adam, Laurent et al

in Proceedings of the XII SEM International Conference & Exposition on Experimental and Applied Mechanics (2012)

In this work, a gradient-enhanced mean-field homogenization (MFH) procedure is proposed for fiber reinforced materials. In this approach, the fibers are assumed to remain linear elastic while the matrix ... [more ▼]

In this work, a gradient-enhanced mean-field homogenization (MFH) procedure is proposed for fiber reinforced materials. In this approach, the fibers are assumed to remain linear elastic while the matrix material obeys an elasto-plastic behavior enhanced by a damage model. As classical finite element simulations face the problems of losing uniqueness and strain localization when strain softening of materials is involved, we develop the mean-field homogenization in a non-local way. Toward this end we use the so-called non-local implicit approach, reformulated in an anisotropic way to describe the damage in the matrix. As a result we have a multi-scale model that can be used to study the damage process at the meso-scale, and in particular the damaging of plies in a composite stack, in an efficient computational way. As a demonstration a stack with a hole is studied and it is shown that the model predicts the damaging process in bands oriented with the fiber directions. [less ▲]

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See detailNon, le village de pêcheurs de Phan Thiet n’a pas été victime du changement climatique
Ozer, Pierre ULg

in Colloque international "Géomatique et gestion des risques naturels" en hommage au Professeur André Ozer - Livre de résumés (2012)

En janvier 2009, 27 maisons situées sur le littoral sud du Vietnam, dans la ville de Phan Thiet, zone très touristique à 200 kilomètres à l'est de Ho Chi Minh-Ville, se sont effondrées. Une centaine d ... [more ▼]

En janvier 2009, 27 maisons situées sur le littoral sud du Vietnam, dans la ville de Phan Thiet, zone très touristique à 200 kilomètres à l'est de Ho Chi Minh-Ville, se sont effondrées. Une centaine d'autres bâtiments étaient également menacés de disparition. Les médias internationaux ont ainsi relayé l’information « des centaines de soldats, de gardes côtes et de volontaires ont été mobilisés pour amasser des sacs de sable sur place et tenter de limiter les dégâts. En cause, l'érosion du littoral, grignoté par de fortes vagues. Selon les experts, le Vietnam et ses plus de 3.200 km de côtes font partie des zones les plus exposées aux effets du réchauffement climatique, qu'il s'agisse de l'élévation du niveau des mers ou de l'augmentation de la fréquence des typhons et inondations ». Il s’agit donc indéniablement d’une des conséquences du réchauffement climatique. Cet article montre comment, en utilisant la fonction multi dates Google Earth, il est possible de démonter cette argumentation et de mettre en évidence les vraies causes de ce rapide et inéluctable retrait des côtes au niveau de ce village de pêcheurs, à savoir la construction anarchique de la station balnéaire de Mui Ne, quelques kilomètres à l’est. La création de ce désormais haut lieu touristique est extrêmement récente, le premier établissement étant sorti de terre en 1994. Vu le succès croissant des plages de sable blanc, toute la côte a depuis été lotie sur près de cinq kilomètres. Mui Ne a donc modifié son espace pour accueillir les touristes occidentaux. Ainsi, les cocoteraies ont été abattues pour laisser la place à des cocotiers ne faisant plus office que de décor sur la plage, les liserons des sables ont été arrachés pour éloigner les puces de mer, le sable a été égalisé et les infrastructures hôtelières ont recouvert les dunes pour être en contact direct avec la plage. C’est ainsi tout un décor « exotique » qui est créé pour être conforme aux représentations des touristes occidentaux. La suite est connue d’avance : le fragile équilibre littoral est rompu et le bilan sédimentaire devient négatif. Entre 2006 et 2009, la plage d’une trentaine de mètres a totalement disparu. Or, la plage étant la raison d’être de ce lieu, il convient de la préserver à tout prix. Ainsi, les promoteurs immobiliers ont eu recours à la construction d’épis de plus de 100 mètres pour recréer de longues plages, artificielles cette fois, qui interrompent le transit sédimentaire. La dérive littorale est ainsi stoppée ce qui engendre la disparition des plages suivantes et l’effondrement des maisons de pêcheurs. Cette analyse montre clairement la rapide modification des paysages qui résulte d’une conversion économique locale non encadrée répondant aux processus de mondialisation. [less ▲]

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See detailComplexité et incertitude de la/en didactique du FLE
Defays, Jean-Marc ULg; Meunier, Deborah ULg

in Dumortier, Jean-Louis; Van Beveren, Julien; Vrydaghs, David (Eds.) Curriculum et progression en français. Actes du 11e colloque de l'AIRDF, Université de Liège, 26-28 août 2010 (2012)

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See detailLearning exploration/exploitation strategies for single trajectory reinforcement learning
Castronovo, Michaël ULg; Maes, Francis ULg; Fonteneau, Raphaël ULg et al

in Proceedings of the 10th European Workshop on Reinforcement Learning (EWRL 2012) (2012)

We consider the problem of learning high-performance Exploration/Exploitation (E/E) strategies for finite Markov Decision Processes (MDPs) when the MDP to be controlled is supposed to be drawn from a ... [more ▼]

We consider the problem of learning high-performance Exploration/Exploitation (E/E) strategies for finite Markov Decision Processes (MDPs) when the MDP to be controlled is supposed to be drawn from a known probability distribution pM( ). The performance criterion is the sum of discounted rewards collected by the E/E strategy over an in finite length trajectory. We propose an approach for solving this problem that works by considering a rich set of candidate E/E strategies and by looking for the one that gives the best average performances on MDPs drawn according to pM( ). As candidate E/E strategies, we consider index-based strategies parametrized by small formulas combining variables that include the estimated reward function, the number of times each transition has occurred and the optimal value functions V and Q of the estimated MDP (obtained through value iteration). The search for the best formula is formalized as a multi-armed bandit problem, each arm being associated with a formula. We experimentally compare the performances of the approach with R-max as well as with e-Greedy strategies and the results are promising. [less ▲]

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See detailRobustness-based model validation of an apoptosis signalling network model
Schliemann, Monica ULg; Findeisen, Rolf; Bullinger, Eric ULg

in Proceedings of the 16th IFAC Symposium on System Identification, Brussels, Belgium, 11–13 July 2012 (2012)

Models of intracellular biochemical reaction networks are difficult to parameterise due to the low number of quantitative time series experimental values. Therefore, model validation or invalidation plays ... [more ▼]

Models of intracellular biochemical reaction networks are difficult to parameterise due to the low number of quantitative time series experimental values. Therefore, model validation or invalidation plays an important role, as it allows to check qualitatively whether a model structure is suited or not to reproduce qualitatively the experimental findings. This paper analyses the robustness of an experimentally validated polynomial differential equation model of TNF-induced pro-and anti-apoptotic signalling. The bistability of the median model is shown robust to large single parameter variations. Only two parameters (XIAP and Procaspase-3 production rates) are shown to be fragile, in particular when changed simultaneously. Therefore, the model seems valid from the point of view of robustness analysis of the bistability. Many biological experiments quantify average concentrations or the percentage of viable cells, while other methods such as microscopy-based experiments observe single cells. The integration of single cell and cell population behaviour of TNF-induced pro- and anti-apoptotic signalling has been achieved via a cell ensemble model, whose robustness is also analysed here. We show that within the cell population there are cells with not only quantitative differences, but also qualitative ones. In particular, all cells are not bistable. The degree of robustness applicable for the median cell is expanded to combine mono- and bistable models. This measure, applied solely to the two-dimensional subspace of fragile parameters, is shown to correlate well with the time of death. While robustness of bistability can serve for model validation of the median cell model, it cannot for the model of the cell population. [less ▲]

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See detail"Avatars d'un humoriste: Alphonse Allais chahuteur, diseur, chroniqueur, auteur"
Defays, Jean-Marc ULg

in Pillet, Elisabeth; Thérenty, Marie-Eve (Eds.) Presse, chansons et paroles vives au XIXeme siècle (2012)

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See detailEpidemiology and genetics of FIPA
Beckers, Albert ULg

in 12th ESE PostGraduate Course in Clinical Endocrinology - Abstract book (2012)

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See detailUncertainty in forecasts of complex rule-based systems of travel demand: Comparative analysis of the Albatross/Feathers model system
Rasouli, Soora; Cools, Mario ULg; Kochan, Bruno et al

in Proceedings of the 13th International Conference on Travel Behaviour Research (2012)

This paper documents the results of a comparative analysis of model uncertainty of the Albatross/Feathers model system for respectively the Rotterdam region, The Netherlands and Antwerp region, Belgium ... [more ▼]

This paper documents the results of a comparative analysis of model uncertainty of the Albatross/Feathers model system for respectively the Rotterdam region, The Netherlands and Antwerp region, Belgium. The assessment concerned the calculation of the coefficient of variation for the daily distance travelled per person. The calculations are performed both at the aggregated level and the disaggregated level (e.g. disaggregation by certain socio-demographics). Results indicate that model uncertainty differs by socio-demographic groups. Results of a regression analysis also indicate that in both regions uncertainty in daily distance travelled per person is strongly correlated with the inverse square root of the relevant socio-demographic population and the complexity of the classification, measured in terms of the number of possible classes. [less ▲]

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See detailNumerical modelling in TIMODAZ: developments and achievements
Charlier, Robert ULg; Collin, Frédéric ULg; Levasseur, Séverine ULg

in Post-TIMODAZ International Workshop THM effects in clay host rocks for radioactive waste repositories (2012)

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See detailThe neural correlates of recollection and familiarity during aging
Angel, Lucie; Bastin, Christine ULg; Genon, Sarah ULg et al

in Proceedings of the XII Colloque International sur le Vieillissement Cognitif (2012)

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See detailQuelques questions en matière d'assistance judiciaire
Biemar, Bénédicte ULg

in Lecocq, Pascale (Ed.) Chroniques de droit à l'usage des juges de paix et de police 2012 (2012)

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See detailUse of Physiologically Based Pharmacokinetic (PBPK) Models in Marine Mammal Toxicology
Weijs, Liesbeth; Yang, Raymond S.H.; Das, Krishna ULg et al

in Kawaguchi, M.; Misaki, K.; Sato, H. (Eds.) et al Interdisciplinary Studies on Environmental Chemistry—Environmental Pollution and Ecotoxicology (2012)

Physiologically based pharmacokinetic (PBPK) models are mathematical models that are largely based upon the physiological characteristics of the species and the biochemical properties of the chemical of ... [more ▼]

Physiologically based pharmacokinetic (PBPK) models are mathematical models that are largely based upon the physiological characteristics of the species and the biochemical properties of the chemical of interest. They quantitatively describe and predict the kinetics of pollutants inside the body and can be of major importance for risk assessment of chemicals in marine mammals. PBPK models which consist of five compartments (liver, blubber, kidney, brain, and the rest of the body) were made for selected polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) in order to address the bioaccumulation of these compounds in tissues of harbour porpoises (Phocoena phocoena). Harbour porpoises have relatively long life spans, are common cetaceans in the North Sea, a heavily polluted area, and are known to be very sensitive to pollution. Models developed for all compounds (some PCBs and PBDEs) were evaluated using existing datasets from the literature and from analyses performed by GC-MS, the latter being obtained from stranded porpoises in the Black Sea and the North Sea over a period of 18 years (1990–2008) to assess spatial and temporal trends in bioaccumulation of the respective PCBs and PBDEs. We demonstrate that PBPK models are a feasible computational approach that can be used as a non-destructive tool for predicting the chemical pollution status of the marine mammals. [less ▲]

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See detailNonlinear Structural Dynamics: Theory, Simulation and Testing, KEYNOTE LECTURE
Kerschen, Gaëtan ULg

in Proceedings of the 18th Symposium on Vibrations, Shocks and Noise (2012)

Nonlinearity is a frequent occurrence in engineering structures. It is at the origin of rich and complex dynamical phenomena that cannot be observed in linear structures. The analysis of the dynamics of ... [more ▼]

Nonlinearity is a frequent occurrence in engineering structures. It is at the origin of rich and complex dynamical phenomena that cannot be observed in linear structures. The analysis of the dynamics of nonlinear systems therefore warrants the development of rigorous and effective methods and is the focus of this presentation. Several theoretical, computational and experimental methods will be presented and applied to a real-life, full-scale nonlinear structure, the EADS- Astrium SmallSat spacecraft. [less ▲]

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See detailÉVALUER DES COMPÉTENCES DANS UNE OPTIQUE SITUATIONNELLE : UN GAGE DE VALIDITÉ ? L’EXPÉRIENCE DE DÉVELOPPEMENT D’OUTILS D’ÉVALUATION DES COMPÉTENCES EN HISTOIRE AU SECONDAIRE EN BELGIQUE FRANCOPHONE
Jadoulle, Jean-Louis ULg

in L’évaluation des compétences en milieu scolaire et professionnel : actes électroniques téléchargeables sur http://admee2012.uni.lu/pdf2012/A07_01.pdf (2012)

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See detailEnseigner la co-conception à distance : Retour sur cinq années d’expérience
Safin, Stéphane ULg; Kubicki, Sylvain; Hanser, Damien et al

in Guéna, François; Lecourtois, Caroline (Eds.) Complexité(s) des modèles de l'architecture numérique (2012)

Le LUCID-ULg et l’ENSA de Nancy organisent depuis cinq années le Studio Digital Collaboratif. Il s’agit d’un atelier de conception architecturale collaboratif à distance. Plusieurs groupes réunissant ... [more ▼]

Le LUCID-ULg et l’ENSA de Nancy organisent depuis cinq années le Studio Digital Collaboratif. Il s’agit d’un atelier de conception architecturale collaboratif à distance. Plusieurs groupes réunissant entre quatre et six étu- diants liégeois et nancéiens, conçoivent un projet architectural d’une certaine ampleur dans un délai de trois mois. Ce papier propose un retour sur cette ex- périence, dans ses aspects pédagogiques, organisationnels et technologiques. [less ▲]

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See detailLes aménagements de sépultures en bois dans les cimetières de Hongrie et de Transylvanie : une tradition toujours vivante ?
Szanto, Catherine ULg

in Le bois dans l’architecture et l’aménagement de la tombe : quelles approches ? (2012)

Dans certains cimetières de l’est de la Hongrie et de la Transylvanie, les sépultures sont marquées par des stèles en bois sculpté. L’origine de cette tradition, qui ne se retrouve que dans les cimetières ... [more ▼]

Dans certains cimetières de l’est de la Hongrie et de la Transylvanie, les sépultures sont marquées par des stèles en bois sculpté. L’origine de cette tradition, qui ne se retrouve que dans les cimetières réformés, est mal connue. Les stèles suivent une typologie simple mais qui présente de nombreuses variantes selon les époques et les lieux. Cette tradition et les savoir-faire qui l’accompagnaient étaient encore très vivants pendant la première moitié du XXe s. et ne se sont pas encore tout à fait perdus. [less ▲]

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See detailEvaluation collégiale de productions complexes - A la recherche d'Indicateurs valides de niveaux de développement des compétences
Georges, François ULg; Poumay, Marianne ULg

in 24ème Colloque de l'Admée-Europe: L'évaluation des compétences en milieu scolaire et en milieu professionnel (2012)

Le master complémentaire en pédagogie de l'enseignement supérieur de l'université de Liège s'inscrit dans une approche programme centrée sur le développement de compétences. Les modalités de suivi qui y ... [more ▼]

Le master complémentaire en pédagogie de l'enseignement supérieur de l'université de Liège s'inscrit dans une approche programme centrée sur le développement de compétences. Les modalités de suivi qui y sont proposées ont pour objet d'informer les apprenants sur leur niveau d'expertise. Elles se centrent non seulement sur les performances, mais également sur la manière dont les apprenants mobilisent et combinent leurs connaissances et leurs expériences pour analyser leur réalité professionnelle. Dans notre intervention, nous illustrerons les indicateurs choisis pour évaluer le niveau de compétence de l'apprenant et les feedbacks communiqués pour progresser. [less ▲]

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See detailComparison of Different Selection Strategies in Monte-Carlo Tree Search for the Game of Tron
Perrick, Pierre; Lupien St-Pierre, David ULg; Maes, Francis ULg et al

in IEEE Conference on Computational and Intelligence in Games 2012 (2012)

Monte-Carlo Tree Search (MCTS) techniques are essentially known for their performance on turn-based games, such as Go, for which players have considerable time for choosing their moves. In this paper, we ... [more ▼]

Monte-Carlo Tree Search (MCTS) techniques are essentially known for their performance on turn-based games, such as Go, for which players have considerable time for choosing their moves. In this paper, we apply MCTS to the game of Tron, a simultaneous real-time two-player game. The fact that players have to react fast and that moves occur simultaneously creates an unusual setting for MCTS, in which classical selection policies such as UCB1 may be suboptimal. In this paper, we perform an empirical comparison of a wide range of selection policies for MCTS applied to Tron, with both deterministic policies (UCB1, UCB1-Tuned, UCB-V, UCBMinimal, OMC-Deterministic, MOSS) and stochastic policies (Epsilon-greedy, EXP3, Thompson Sampling, OMC-Stochastic, PBBM). From the experiments, we observe that UCB1-Tuned has the best behavior shortly followed by UCB1. Even if UCB-Minimal is ranked fourth, this is a remarkable result for this recently introduced selection policy found through automatic discovery of good policies on generic multi-armed bandit problems. We also show that deterministic policies perform better than stochastic ones for this problem. [less ▲]

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See detailMaths et manips : introduction de manipulations dans les classes pour favoriser la construction des apprentissages
Henry, Valérie ULg; Lambrecht, Pauline

in Actes du XXXVIIIè colloque de la COPIRELEM (2012)

Cet atelier rend compte d’une recherche actuellement en cours au CREM . Les Math & Manips sont des activités conçues pour provoquer chez les élèves des conflits entre ce qu’ils pensent et ce qu’ils ... [more ▼]

Cet atelier rend compte d’une recherche actuellement en cours au CREM . Les Math & Manips sont des activités conçues pour provoquer chez les élèves des conflits entre ce qu’ils pensent et ce qu’ils découvrent lors des expérimentations. Nous proposons trois séquences d'apprentissage intégrant des manipulations, et destinées à diverses tranches d'âge de l'enseignement élémentaire voire du début du collège. Pour les enfants de 6 à 8 ans, nous travaillons les grandeurs (longueurs, masses, capacités et aires) avec pour objectif de dégager des méthodes efficaces de comparaison sans unité conventionnelle de référence. Pour les élèves de 8 à 10 ans, il s'agit de faire découvrir l'utilité d'un étalon conventionnel en travaillant les capacités. Pour ceux de 10 à 12 ans, nous proposons une séquence visant l'appropriation de la notion de volume. La discussion avec les participants s’oriente principalement sur les concepts mis en place au cours de chaque activité. [less ▲]

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See detailLa répétition de phrases comme aide au diagnostic des enfants dysphasiques.
Maillart, Christelle ULg; Leclercq, Anne-Lise ULg; Quemart, Pauline ULg

in Les entretiens de Bichat (Ed.) Entretiens d'Orthophonie 2012 (2012)

Sentence repetition is generally considered as a sensitive marker of specific language impairment (SLI). In the present study, we first examined whether the sentence repetition subtest of the L2MA-2 ... [more ▼]

Sentence repetition is generally considered as a sensitive marker of specific language impairment (SLI). In the present study, we first examined whether the sentence repetition subtest of the L2MA-2 (Chevrie-Muller et al., 2010) makes it possible to discriminate between children with and without SLI. We then investigated the relevance of the multiple scores that can be computed in several linguistic domains in the clinical diagnosis of children with SLI. Twenty-two French-speaking children diagnosed with SLI and 22 chronological age matched children were asked to perform the sentence repetition task from the L2MA-2 test. Results indicate that this task is a sensitive clinical marker of SLI that makes it possible to discriminate between children with and without SLI. In addition, a factorial analysis indicates that two distinct factors can be dissociated when performing a sentence repetition task: a morpho-syntaxic factor and a lexico-semantic factor. Taken together, these results indicate that the sentence repetition task is a powerful tool when assessing language impairments in French language. [less ▲]

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See detailContextual Multi-armed Bandits for Web Server Defense
Jung, Tobias ULg; Martin, Sylvain ULg; Ernst, Damien ULg et al

in Hussein, Abbas (Ed.) Proceedings of 2012 International Joint Conference on Neural Networks (IJCNN) (2012)

In this paper we argue that contextual multi-armed bandit algorithms could open avenues for designing self-learning security modules for computer networks and related tasks. The paper has two ... [more ▼]

In this paper we argue that contextual multi-armed bandit algorithms could open avenues for designing self-learning security modules for computer networks and related tasks. The paper has two contributions: a conceptual and an algorithmical one. The conceptual contribution is to formulate the real-world problem of preventing HTTP-based attacks on web servers as a one-shot sequential learning problem, namely as a contextual multi-armed bandit. Our second contribution is to present CMABFAS, a new algorithm for general contextual multi-armed bandit learning that specifically targets domains with finite actions. We illustrate how CMABFAS could be used to design a fully self-learning meta filter for web servers that does not rely on feedback from the end-user (i.e., does not require labeled data) and report first convincing simulation results. [less ▲]

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See detailSolutal Marangoni instability in a binary liquid layer evaporating into air: the importance of transients in the gas for highly unstable cases
Machrafi, Hatim ULg; Rednikov, Alexey; Colinet, Pierre et al

in Bulletin of the American Physical Society, Vol. 57, n°17 (2012) (2012)

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See detail- Petit tour du monde du contradictoire dans le procès pénal
Jacobs, Ann ULg

in Ribeyre, Cédric (Ed.) Le contradictoire dans le procès pénal : nouvelles perspectives (2012)

Présentation du caractère contradictoire de la procédure pénale au cours de ses différentes phases en droit comparé.

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See detailThe nonlinear tuned vibration absorber
Viguié, R.; Kerschen, Gaëtan ULg

in Proceedings of the International Conference on Structural Nonlinear Dynamics and Diagnosis (2012)

The objective of this paper is to introduce a new nonlinear dynamical absorber, the nonlinear tuned vibration absorber, through a rigorous nonlinear extension of the tuning rule for the linear tuned ... [more ▼]

The objective of this paper is to introduce a new nonlinear dynamical absorber, the nonlinear tuned vibration absorber, through a rigorous nonlinear extension of the tuning rule for the linear tuned vibration absorber. This nonlinear tuning methodology combined with the increased suppression bandwidth brought by the intentional use of nonlinearity leads to the development of an absorber that is effective in wide ranges of frequencies and motion amplitudes. The results are illustrated using a one-degree-of-freedom primary system. [less ▲]

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See detailIntroduction séminaire citoyen participatif coexistence Milan royal et Parc éolien
Stassart, Pierre M ULg

in Coexistence Milan royal & Parc éolien, pour une compréhension ouverte d'un problème complexe (2012)

Nous aurions pu nous limiter dans cette introduction à présenter la méthodologie du séminaire. Mais celle-ci contient un trompe-l’oeil : en réalité, le séminaire constitua le moment fort d’un ... [more ▼]

Nous aurions pu nous limiter dans cette introduction à présenter la méthodologie du séminaire. Mais celle-ci contient un trompe-l’oeil : en réalité, le séminaire constitua le moment fort d’un processus complexe qui inscrit dans le temps un rapprochement improbable entre deux groupes, celui des coopérateurs de Lucéole et des ornithologues de la région. C’est pourquoi cette introduction prend le temps de refaire ce cheminement : du premier cadrage opéré en préambule, justification d’une expertise citoyenne aux côtés de l’étude d’incidence jusqu’au processus de rapprochement entre les deux groupes locaux : Lucéole et ornithologues [less ▲]

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See detailUna panoramica sulle nuove opzioni chirurgiche nella gestione della menometrorragia
Nisolle, Michelle ULg

in Novità nella gestione medico-chirurgica della menometrorragia (2012)

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See detailQuantifying Input Uncertainty in Traffic Assignment Models
Perrakis, Konstantinos; Cools, Mario ULg; Karlis, Dimitris et al

in Proceedings of the 91st Annual Meeting of the Transportation Research Board (DVD-ROM) (2012)

Traffic assignment methods distribute Origin-Destination (OD) flows throughout the links of a given network according to procedures related to specific deterministic or stochastic modeling assumptions. In ... [more ▼]

Traffic assignment methods distribute Origin-Destination (OD) flows throughout the links of a given network according to procedures related to specific deterministic or stochastic modeling assumptions. In this paper, we propose a methodology that enhances the information provided from traffic assignment models, in terms of delivering stochastic estimates for traffic flows on links. Stochastic variability is associated to the initial uncertainty related to the OD matrix used as input into a given assignment method, and therefore the proposed methodology is not constrained by the choice of the assignment model. The methodology is based on Bayesian estimation methods which provide a suitable working framework for generating multiple OD matrices from the corresponding predictive distribution of a given statistical model. Predictive inference for link flows is then straightforward to implement, either by assigning summarized OD information or by performing multiple assignments. Interesting applications arise in a natural way from the proposed methodology, as is the identification and evaluation of critical links by means of probability estimates. A real-world application is presented for the road network of the northern, Dutch-speaking region of Flanders in Belgium, under the assumption of a deterministic user equilibrium model. [less ▲]

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See detailThe clinical and genetic characteristics of patients with gigantism
Rostomyan, Liliya ULg; Daly, Adrian ULg; Tichomirowa, M et al

in Abstract book - Aspiring excellence : Pituitary expert forum (2012)

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See detailDoes vascular endothelial growth factor improve ovarian tissue recovery after cryopreservation?
Henry, Laurie ULg; Fransolet, Maïté ULg; Labied, Soraya ULg et al

in Giornale italiano di obstetricia e gynecologia (2012)

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See detailIntensity distribution of non-linear scattering states
Hartmann, Timo; Urbina, Juan-Diego; Richter, Klaus et al

in Robnik, M.; Romanovski, V.G. (Eds.) LET'S FACE CHAOS THROUGH NONLINEAR DYNAMICS (2012)

We investigate the interplay between coherent effects characteristic of the propagation of linear waves, the non-linear effects due to interactions, and the quantum manifestations of classical chaos due ... [more ▼]

We investigate the interplay between coherent effects characteristic of the propagation of linear waves, the non-linear effects due to interactions, and the quantum manifestations of classical chaos due to geometrical confinement, as they arise in the context of the transport of Bose-Einstein condensates. We specifically show that, extending standard methods for non-interacting systems, the body of the statistical distribution of intensities for scattering states solving the Gross-Pitaevskii equation is very well described by a local Gaussian ansatz with a position-dependent variance. We propose a semiclassical approach based on interfering classical paths to fix the single parameter describing the universal deviations from a global Gaussian distribution. Being tail effects, rare events like rogue waves characteristic of non-linear field equations do not affect our results. [less ▲]

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See detailDissociation entre recollection et familiarité dans la maladie d'Alzheimer : Etude des bases cérébrales en imagerie par résonance magnétique fonctionnelle.
Bastin, Christine ULg; Genon, Sarah ULg; Collette, Fabienne ULg et al

in Proceedings of the 11th Reunion Francophone sur la Maladie d’Alzheimer et les Syndromes Apparentés (2012)

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See detailLes Manuscrits ZER des Mille et une Nuits : le point sur leur support
Franssen, Elise ULg

in Cherpion, Nadine; Cannuyer, Christian (Eds.) Regards sur l'Orientalisme belge, suivis d'études égyptologiques et orientales (2012)

The Arabian Nights are universally, but only superficially known. The historical editions present an altered text, only the manuscripts being faithful to it. Amazingly enough, these are not much studied ... [more ▼]

The Arabian Nights are universally, but only superficially known. The historical editions present an altered text, only the manuscripts being faithful to it. Amazingly enough, these are not much studied. My research deals with a group of manuscripts of the Arabian Nights, the so-called ZER (« Zotenberg’s Egyptian Recension »), supposedly dating to the end of the 18th or the beginning of the 19th century. I am both interested in the text (its structure, level of language, contents) and in the manuscripts themselves, considering them through a multidisciplinary approach. The first part of my research is a thorough codicological analysis of each manuscript of the group. Its results improve our knowledge of the manuscripts (among others, of the date of their copy) and of the text. A concrete example is given here, with the study of various watermarks found in the papers of the manuscripts. [less ▲]

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See detailSurgical treatment of urinary incontinence in the bitch
Hamaide, Annick ULg

in Proceedings of the 6th Leipziger Tierarztekongress (2012)

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See detailAssessing heat stress effects on production traits of Holsteins in a temperate region
Hammami, Hedi ULg; Bormann, Jeanne; Gengler, Nicolas ULg

in Book of abstracts of the 63rd Annual Meeting of the European Association for Animal Production (2012)

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See detailL'application du droit européen de la concurrence par l'arbitre
Caprasse, Olivier ULg

in Mayer, Pierre (Ed.) Arbitrage et droit de l'Union Européenne (2012)

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See detailImpedance spectroscopy of GeSn/Ge heterostructures by a numerical method
Baert, Bruno ULg; Nakatsuka, Osamu; Zaima, Shigeaki et al

in 222nd ECS Meeting, 2012 (2012)

In this work, we investigated the electrical characteristics of p-GeSn/p-Ge and p-GeSn/n-Ge structures obtained by simulation of the semiconductor equations. We developed a numerical formalism based on a ... [more ▼]

In this work, we investigated the electrical characteristics of p-GeSn/p-Ge and p-GeSn/n-Ge structures obtained by simulation of the semiconductor equations. We developed a numerical formalism based on a drift-diffusion model including a trap level and applied it to typical GeSn-based heterostructures by focusing on the electrical response under small-signal alternating current regime. The results demonstrate that our method provides an access to both microscopic and macroscopic properties, and thereon, to a physical interpretation of the electrical characteristics of GeSn-based structures by linking measurable quantities to micro-scale variations in the structures. [less ▲]

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See detailRange90 as indicator for ventilator output versus patients demand: NAVA and pressure support for non-invasively ventilated patients
Chiew, YS; Piquilloud, L.; LAMBERMONT, Bernard ULg et al

in Proceedings of the World Congress on Medical Physics and Biomedical Engineering 2012 (2012)

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See detailTeaching environmental issues in an architectural design studio : Description and students’ response.
François, Arnault; Nussaume, Yann; Szanto, Catherine ULg

in Proceedings of the 5th WSEAS International Conference on Landscape Architecture (2012)

The aim of teaching landscape and environmental issues to architecture students is to develop their sensitivity towards the environment of their building. But beyond that, it is a step leading to the ... [more ▼]

The aim of teaching landscape and environmental issues to architecture students is to develop their sensitivity towards the environment of their building. But beyond that, it is a step leading to the understanding of the meaning of sustainable architecture. The paper presents a course taught at the ENSA (School of architecture) of Normandie. Students’ comments on the course can give directions as to how to develop is further. [less ▲]

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