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See detailIs λ Cep a pulsating star?
Uuh-Sonda, J. M.; Eenens, P.; Rauw, Grégor ULiege

in Meynet, Georges; Georgy, Cyril; Groh, José (Eds.) et al IAU Symposium (2015, January 01)

It has been proposed that the variability seen in absorption lines of the O6Ief star λ Cep is periodical and due to non-radial pulsations (NRP). We have obtained new spectra during six campaigns lasting ... [more ▼]

It has been proposed that the variability seen in absorption lines of the O6Ief star λ Cep is periodical and due to non-radial pulsations (NRP). We have obtained new spectra during six campaigns lasting between five and nine nights. In some datasets we find recurrent spectral variations which move redward in the absorption line profile, consistent with perturbations on the stellar surface of a rotating star. However the periods found are not stable between datasets, at odds with the NRP hypothesis. Moreover, even when no redward trend is found in a full dataset of an observing campaign, it can be present in a subset, suggesting that the phenomenon is short-lived, of the order of a few days, and possibly linked to transient magnetic loops. [less ▲]

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See detailPourquoi la théorie de la connaissance a besoin de la psychologie: les arguments de Stumpf
Dewalque, Arnaud ULiege

in Gyemant, Maria (Ed.) Psychologie et psychologisme (2015, January)

Mon objectif est double. Il s’agira, d’une part, de retracer la position de Carl Stumpf face à la querelle du psychologisme (lectures psychologistes de Kant vs lectures antipsychologistes néokantiennes ... [more ▼]

Mon objectif est double. Il s’agira, d’une part, de retracer la position de Carl Stumpf face à la querelle du psychologisme (lectures psychologistes de Kant vs lectures antipsychologistes néokantiennes) et, d’autre part, d’en tirer quelques implications d’allure très générale concernant la place qu’il convient de réserver aux considérations psychologiques en philosophie. Je suggérerai: (1) que Stumpf adopte une voie médiane entre psychologisme et antipsychologisme, (2) que cette voie médiane est représentative de l'orientation philosophique de Brentano et de son école, (3) qu'elle débouche sur une conception fine des rapports entre philosophie (en particulier théorie de la connaissance) et psychologie: la théorie de la connaissance a besoin de la psychologie, sans être à proprement parler "fondée" sur elle. [less ▲]

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See detailModelling Hydromechanical Dilation Geomaterial—Cavitation and Localization
Sieffert, Y.; Buzzi, O.; Collin, Frédéric ULiege et al

in Chau, Kam Tim; Zhao, Jidong (Eds.) Bifurcation and Degradation of Geomaterials in the New Millennium (2015, January)

This paper presents an extension of the local second gradient model to multiphasic materials (solid particles, air, water) and including the cavitation phenomenon. This new development was made in order ... [more ▼]

This paper presents an extension of the local second gradient model to multiphasic materials (solid particles, air, water) and including the cavitation phenomenon. This new development was made in order to model the response of saturated dilatant materials under deviatoric stress and undrained conditions and possibly, in future, the behaviour of unsaturated soils [less ▲]

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See detailEvaluer les apprentissages dans le cadre d'une pédagogie par projet
Scheffers, Patricia ULiege; Leduc, Diane; Le Coguiec, Eric

in Actes du 27e Colloque de l'ADMEE Euope (2015, January)

Avant d'être l'affaire des courants de l'éducation nouvelle, la pédagogie par projet était présente dans les discours de formation d'architecture italienne dès le 16e siècle. Aujourd'hui, elle s'inscrit ... [more ▼]

Avant d'être l'affaire des courants de l'éducation nouvelle, la pédagogie par projet était présente dans les discours de formation d'architecture italienne dès le 16e siècle. Aujourd'hui, elle s'inscrit parmi les multiples approches d'une pédagogie différenciée et est utilisée dans plusieurs disciplines, des arts aux sciences, en passant par l'ingénierie et l'administration. Plusieurs écrits existent à son sujet, mais peu s'attardent aux pratiques d'évaluation des apprentissages qu'elle génère. Pourtant, celle-ci est l'un des aspects les plus complexes de l'enseignement et le plus prenant puisque le professeur en est l'unique responsable et qu'il occupe près de la moitié de sa tâche (Laurier, Tousignant et Morrissette, 2005). Dimension fondamentale, et parfois difficile, dans le parcours de l'apprenant, l'évaluation des apprentissages impose actuellement un changement de culture important pour les professeurs, particulièrement lorsqu'il est question de pédagogie par projet. Pour certains d'entre eux, souvent peu formés en enseignement, mais possédant une expérience du métier reconnue, l'évaluation se limite au projet et à sa présentation devant un jury et les pairs au détriment de la qualité de la démarche et surtout des apprentissages réalisés (Allal, 2013; Beattie, 2006; Gaillot, 2009 ; Romainville, 2011). Dans la formation d'architecte, la pédagogie par projet fait partie intégrante du processus d'enseignement, d'apprentissage et d'évaluation. En atelier de projet de 3e bachelier à l'ULg, l'évaluation des apprentissages exclusivement orientés sur le projet a mené, après plusieurs années d'expérimentations, à la création de dispositifs adaptés et spécifiques. S'appuyant sur les principes clés et actuels en évaluation des apprentissages, ces dispositifs tentent de mettre en avant-plan un souci de concordance entre le contenu à enseigner et les méthodes utilisées. Croisant les regards théoriques et pratiques sur le sujet de l'évaluation de performances complexes intégrant créativité et innovation, un bilan des expériences sera établi et tentera de dégager des pistes de régulations pour continuer d'élever le niveau de validité du processus présenté. [less ▲]

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See detailExperimental evaluation of a pairwise broadcast synchronization in a low-power cyber-physical system
Ghoshdastider, U; Viga, R; Kraft, Michael ULiege

in Proceedings of "Radio Wireless Week : San Diego - Janvier 2015" (2015, January)

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See detailA sensor for stiffness change sensing based on three coupled resonators with enhanced sensitivity
Zhao, C; Wood, GS; Xie, J et al

in Proceedings of "IEEE MEMS Conf. : Portugal - Janvier 2015" (2015, January)

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See detailL’évaluation de l’efficacité des approches didactiques : l’art de conjuguer didactique et évaluation ? Symposium du réseau EVADIDA
Fagnant, Annick ULiege; Schillings, Patricia ULiege

in Detroz, Pascal; Borsu, Olivier (Eds.) Actes du 27e colloque de l'Admée-Europe. L'évaluation à la lumière des contextes et des disciplines. (2015, January)

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See detailLa question des « objets » d’évaluation dans les différentes disciplines : Discussion du symposium
Fagnant, Annick ULiege

in Detroz, Pascal; Borsu, Olivier (Eds.) Actes du 27e colloque de l'Admée-Europe. L'évaluation à la lumière des contextes et des disciplines. (2015, January)

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See detailRésolution de problèmes arithmétiques et représentations schématiques : comment évaluer l’efficacité d’approches didactiques contrastées ?
Fagnant, Annick ULiege; Auquière, Amélie ULiege; Vlassis, Joëlle

in Detroz, Pascal; Borsu, Olivier (Eds.) Actes du 27e colloque de l'Admée-Europe. L'évaluation à la lumière des contextes et des disciplines. (2015, January)

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See detailEst-il possible de cibler les acquis et les faiblesses des élèves face à la résolution de problèmes arithmétiques dans le cadre d’une évaluation externe non certificative ?
Demonty, Isabelle ULiege; Fagnant, Annick ULiege

in Detroz, Pascal; Borsu, Olivier (Eds.) Actes du 27e colloque de l'Admée-Europe. L'évaluation à la lumière des contextes et des disciplines. (2015, January)

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See detailPortfolio, un outil d’apprentissage et d’évaluation des compétences en formation d’adultes
Pirard, Florence ULiege; Lambert, Isabelle ULiege

in Detroz, Pascal; Borsu, Olivier (Eds.) Actes du 27e colloque de l'Admée-Europe. L'évaluation à la lumière des contextes et des disciplines. (2015, January)

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See detailExpressions verbales de la présence française en Italie entre xve et xvie siècles
Dumont, Jonathan ULiege

in Vissière, Laurent; Hablot, Laurent (Eds.) Cris, Jurons et Chansons. Entendre les « paysages sonores » du Moyen Age et de la Renaissance (2015)

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See detailThalamic volume as a biomarker for Disorders Of Consciousness. Progress in Biomedical Optics and Imaging
Rubeaux, M; Mahalingam, J; Gomez, F et al

in Proceedings of SPIE (2015)

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See detailCorrespondance inédite avec Jean-Jacques
Fierens, Jacques ULiege

in Niang, F; Bernard, F (Eds.) Promotion et défense des droits de l’enfant : enjeux théoriques, pratiques et philosophiques (2015)

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See detailToponymie et anthroponymie dans l'Atlas linguistique de la Wallonie
Baiwir, Esther ULiege

in Germain, Jean; Tamine, Michel (Eds.) Mode(s) en onomastique. Onomastique belgoromane (2015)

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See detailParenté et conditions du mariage. La Cour constitutionnelle est-elle névrosée ?
Fierens, Jacques ULiege

in Cour constitutionnelle et droit familial (2015)

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See detailL’intérêt supérieur de l’enfant et les mutilations génitales féminines
Fierens, Jacques ULiege

in Prévenir et réprimer une forme de maltraitance issue de la tradition : le cas des mutilations génitales féminines (2015)

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See detailProtein hydrolysate for preterm infants
SENTERRE, Thibault ULiege

in SENTERRE, Thibault; Rigo, Jacques (Eds.) 86th Nestlé Nutrition Institute Workshop on “Protein in Neonatal and Infant Nutrition: Recent Updates”. (2015)

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See detailThe red giants in NGC 6633 as seen with CoRoT, HARPS and SOPHIE
Poretti, Ennio; Mathias, Philippe; Barban, Caroline et al

in Asteroseismology of stellar populations in the Milky Way (2015)

The open cluster NGC 6633 was observed with CoRoT in 2011 and simultaneous high-resolution spectroscopy was obtained with the SOPHIE and HARPS spectrographs. One of the four targets was not found to be a ... [more ▼]

The open cluster NGC 6633 was observed with CoRoT in 2011 and simultaneous high-resolution spectroscopy was obtained with the SOPHIE and HARPS spectrographs. One of the four targets was not found to be a cluster member. For all stars we provide estimates of the seismic and spectroscopic parameters. [less ▲]

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See detailParametric Modeling: An Advanced Design Process for Architectural Education
Gallas, Mohamed Anis ULiege; Jacquot, Kevin; Jancart, Sylvie ULiege et al

in ECAADe 33 (2015)

The first part of this paper is giving an overview, experimentation results and feedbacks of a six years experience of parametric design education in schools of architecture from France and Belgium. The ... [more ▼]

The first part of this paper is giving an overview, experimentation results and feedbacks of a six years experience of parametric design education in schools of architecture from France and Belgium. The second part addresses a structure of an advanced educational process of parametric modeling able to support architectural design praxis [less ▲]

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See detailThe extreme ultraviolet imager of solar orbiter: optical design and alignment scheme
Halain, Jean-Philippe ULiege; Mazzoli, Alexandra ULiege; Meining, S. et al

in SPIE Optical Engineering+ Applications (2015)

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See detailPotential use of milk based biomarkers to assess and to select for heat tolerance in dairy cattle
Hammami, Hedi ULiege; Vandenplas, Jérémie; Vanrobays, Marie-Laure ULiege et al

in Proceedings of the second DairyCare Conference 2015 (2015)

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See detailRamses. An Annotated Corpus of Late Egyptian
Winand, Jean ULiege; Polis, Stéphane ULiege; Rosmorduc, Serge

in Lazaridis, N.; Kousoulis, P. (Eds.) Proceedings of the 10th International Congress of Egyptologists. University of the aegean, rhodes 22-29 May 2008 (2015)

First official presentation of the "Ramses Project", an richly annotated corpus of Late Egyptian [Paper submitted in 2008/2009]

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See detailThe mata'a and the "collapse hypothesis"
Flas, Damien ULiege

in De Dapper, Morgan; Cauwe, Nicolas; Huyghe, Dirk (Eds.) Easter Island. Collapse or Transformation ? A State of the Art. Proceedings of the International Conference of Bruxelles (November 9th-10th 2012) (2015)

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See detailAntoninos de Cos, les lophoura et les soins vétérinaires
Marganne, Marie-Hélène ULiege

in Doyen-Higuet, Anne-Marie; Van den Abeele, Baudouin (Eds.) Chevaux, chiens, faucons. L’art vétérinaire antique et médiéval à travers les sources écrites, archéologiques et iconographiques (Louvain-La-Neuve, 24-26 mars 2011) (2015)

Poursuivant les recherches ébauchées à propos d'Antoninos de Cos, dont le nom apparaît, à propos de soins vétérinaires, dans un papyrus grec daté du début du IIIe siècle de notre ère réédité récemment par ... [more ▼]

Poursuivant les recherches ébauchées à propos d'Antoninos de Cos, dont le nom apparaît, à propos de soins vétérinaires, dans un papyrus grec daté du début du IIIe siècle de notre ère réédité récemment par nos soins (Matière médicale ou doxographie ? Révision de PSI inv. 3011 [MP3 2388], dans V. Boudon-Millot – A. Garzya – J. Jouanna & A. Roselli (éd.), Histoire de la tradition et édition des médecins grecs. Actes du VIe Colloque international, Paris, 12-14 avril 2008, Napoli, 2010, pp. 43-59 [Collectanea, 27]), on s'attache à rassembler les fragments qui pourraient être attribués à cet auteur, qu'ils relèvent de la médecine humaine ou vétérinaire, à retracer tant leur contexte chronologique que les étapes de leur transmission, à analyser leur contenu et à définir enfin leur apport à la connaissance de l'art vétérinaire antique et de son expression écrite. [less ▲]

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See detailLIGHTWEIGHT CEMENTITIOUS MORTAR MADE WITH FOAMED PLASTIC WASTE AGGREGATES
Coppola, Bartolomeo ULiege; Di Maio, Luciano; Courard, Luc ULiege et al

in Durability and Sustainability of Concrete Structures – Workshop Proceedings, Bologna 1-3 October 2015 (2015)

In recent years the increasing interest for eco-sustainable building materials and the rising issue of plastic waste disposal are leading to the engineering of new composite construction materials ... [more ▼]

In recent years the increasing interest for eco-sustainable building materials and the rising issue of plastic waste disposal are leading to the engineering of new composite construction materials incorporating post consumer recycled plastics, able at the same time to meet new standard requirements, in terms of energy efficiency, and to reduce the consumption of natural resources. In the context of these issues, we have performed investigations on the effects of the addition of foamed artificial aggregates deriving from recycled plastic materials to a cementitious mortar. For this purpose, several mortar samples containing natural sand and different amounts (10, 25 and 50 % by volume) of foamed recycled plastic wastes were produced. The foaming of the recycled plastic waste was performed in laboratory by a foam extrusion process using a blowing agent (2 wt.%). An artificial aggregates particle size distribution similar to standard sand was used. Rheological and physical properties of lightweight mortar were studied. The improved surface roughness of foamed plastic aggregates ensures a more continuous interface and the presence of surface pores provides interlocking effect with cement paste. Replacement of natural sand by artificial aggregates produces a lightweight mortar but reduces mechanical properties. [less ▲]

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See detailExperimental Validation of Structural Damping Models for Tape Springs
Dewalque, Florence ULiege; Bruls, Olivier ULiege

in Proceedings of the 6th European Conference for Aerospace Sciences (EUCASS) (2015)

The objective of this paper is to study the effect of structural dissipation on the dynamic response of tape springs using experimentally-validated finite element models. In order to reach this goal, an ... [more ▼]

The objective of this paper is to study the effect of structural dissipation on the dynamic response of tape springs using experimentally-validated finite element models. In order to reach this goal, an experimental set-up is built. It consists of two tape springs connected to a fixation support and a dummy panel. The data are collected through a force plate and a 3D motion analysis system. The post-treatment of the experimental results and a comparison with a finite element model show that the Kelvin-Voigt model gives a fair approximation of the structural damping for small oscillations, however, more advanced model should be considered in future works for a better understanding in case of large displacements. [less ▲]

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See detailTracking a table tennis ball for umpiring purposes
Myint, H.; Wong, P.; Dooley, L. et al

in Machine Vision Applications (MVA), 2015 14th IAPR International Conference on,  (2015)

This study investigates tracking a table-tennis ball rapidly from video captured using low-cost equipment for umpiring purposes. A number of highly efficient algorithms have been developed for this ... [more ▼]

This study investigates tracking a table-tennis ball rapidly from video captured using low-cost equipment for umpiring purposes. A number of highly efficient algorithms have been developed for this purpose. The proposed system was tested using sequences capture from real match scenes. The preliminary results of experiments show that accurate and rapid tracking can be achieved even under challenging conditions, including occlusion and colour merging. This work can contribute to the development of an automatic umpiring system and also has the potential to provide amateur users with open access to a detection tool for fast-moving, small, round objects. [less ▲]

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See detailPredictive simulations of damage propagation in laminated composite materials and structures with SAMCEF
Bruyneel, Michaël ULiege; Naito, Tadashi; Urushiyama, Yuta et al

in SAE World Congress 2015 (2015)

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See detailStrength analysis of CFRP composite material considering multiple fracture modes
Naito, Tadashi; Urushiyama, Yuta; Bruyneel, Michaël ULiege

in SAE World Congress 2015 (2015)

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See detailInstruments for collective design in a professional context : Digital format or new processes
Ben Rajeb, Samia ULiege; Leclercq, Pierre ULiege

in Proceedings of the eighth International Conference on Advances in Computer-Human Interactions, ACHI 2015 (2015)

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See detailExperimental performance of a piston expander in a smallscale organic Rankine cycle
Oudkerk, Jean-François ULiege; Dickes, Rémi ULiege; Dumont, Olivier ULiege et al

in IOP Conf. Series: Materials Science and Engineering 90 (2015) (2015)

Volumetric expanders are suitable for more and more applications in the field of micro- and small-scale power system as waster heat recovery or solar energy. This paper present an experimental study ... [more ▼]

Volumetric expanders are suitable for more and more applications in the field of micro- and small-scale power system as waster heat recovery or solar energy. This paper present an experimental study carried out on a swatch-plate piston expander. The expander was integrated into an ORC test-bench using R245fa. The performances are evaluated in term of isentropic efficiency and filling factor. The maximum efficiency and power reached are respectively 53% and 2 kW. Inside cylinder pressure measurements allow to compute mechanical efficiency and drown P-V diagram. A semi-empirical simulation model is then proposed, calibrated and used to analyse the different sources of losses. [less ▲]

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See detailPrécipitations ‘extrêmes’ et inondations à Ouagadougou ; quand le développement urbain est mal maîtrisé...
Hangnon, Hugues; de Longueville, Florence; Ozer, Pierre ULiege

in Erpicum, Michel (Ed.) Actes du 28e Colloque International de l’Association Internationale de Climatologie (2015)

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See detailTechnology Assessment in East Asia: Experiences and New Approaches
Moniz, Antonio; Yoshizawa, Go; Van Oudheusden, Michiel ULiege

in Scherz, Constanze (Ed.) Proceedings from the PACITA 2015 Conference - The Next Horizon of Technology Assessment (2015)

Technology assessment (TA) and TA-like activities in countries like Japan have a unique history and continue to play a role in contemporary science, technology, and innovation (STI) processes. The aim of ... [more ▼]

Technology assessment (TA) and TA-like activities in countries like Japan have a unique history and continue to play a role in contemporary science, technology, and innovation (STI) processes. The aim of the discussion of TA’s experience in East Asia is how STI governance is locally enacted in Asian knowledge-driven economies, as TA activities develop in conjunction with STI policies and programs. To render these processes, policies, and programs visible and to understand their implications for STI governance, a panel at the Berlin conference on TA discussed contributions that described and conceptualized, for example, how TA activities have emerged in Asian knowledge-based economies (KBE), in which particular forms (e.g., academic and parliamentary TA programs), to which technologies and/or actors they are linked, and which methods are used and why. The panel also sought to compare and contrast how TA is (or is not) institutionalized in Asian countries and regions, and to point to prospects for expansion of TA capacity. In doing so, the panellists placed the development of TA in a historical, sociological, and comparative perspective, and opened space for critical reflection on the potential, problems, and limitations associated with initiating TA in Asia and with KBEs overall. [less ▲]

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See detailX-Linked acro-gigantism (X-LAG) syndrome : two new cases with long-term follow-up
Daly, Adrian ULiege; Cuny, T; Rabl, w et al

in Abstract book - 4th ENEA Workshop topic : acromegaly (2015)

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See detailLa politique belge dans la question allemande (1945-1990) : une politique de sécurité ?
Brüll, Christoph ULiege

in Wintgens, Sophie; Grandjean, Geoffrey; Vanhaeren, Stéphanie (Eds.) L'insécurité en question. Définition, enjeux et perspectives (2015)

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See detailDes insectes au menu: apports protéiques et nutriments particuliers?
Caparros Megido, Rudy ULiege; Alabi, Taofic ULiege; Haubruge, Eric ULiege et al

in 56èmes Journées Nationales de Diététique et de Nutrition (2015)

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See detailImpact of forage legumes on nutritive value and growth performance in pigs reared in traditional farming systems in tropical Africa
Kambashi Mutiaka, Bienvenu ULiege; Kalala, Gaetan; Mafwila, Jacques et al

in Book of Abstracts (2015)

Forage legumes (FL) are used in tropical countries to feed pigs, either by reducing allowance of well-balanced diets and supplementing with FL or by incorporating FL in unbalanced fibre-rich diets. The ... [more ▼]

Forage legumes (FL) are used in tropical countries to feed pigs, either by reducing allowance of well-balanced diets and supplementing with FL or by incorporating FL in unbalanced fibre-rich diets. The impact of both strategies on animal and economical performances was studied in 2 growth experiments. In Exp. 1, 4 groups of 8 growing pigs (25.5 +- 4.2 kg) were fed under one of 4 dietary treatment: a well-balanced diet (CONTROL) ad libitum or 80% of the ad libitum level of CONTROL + ad libitum freshly cut foliage of one of 3 FL species (Vigna unguiculata, Stylosanthes guinanensis, or Psophocarpens scandens). Similarly, in Exp. 2, 4 groups of 6 pigs (22.6 +- 3.7 kg) were fed one of 4 experimental diets: the well-balanced diet (CONTROL), an unbalanced traditional diet rich in fibre and made of bran, brewers grain, and corn (TRAD) or 80% TRAD diet supplemented with 20% of one of 2 FL hays (V. unguiculata or S. guinanensis). Animals were regularly weighed and feed intake was monitored. After 90d, animals were slaughtered and carcass composition and economic traits were recorded to calculate production costs and economical value. In addition, nutritive value of the FL and the diets was assessed by means of an in vitro model of the pig digestive tract combining an enzymatic hydrolysis to a fermentation with a fecal inoculum. Results indicate that pigs fed diets with FL (Exp.1) and TRAD with and without FL (Exp.2) had reduced ADG, final live and carcass weights (P<0.05) compared to CONTROL pigs. Surprisingly , dry matter intake (DMI) was also reduced by 10% with those diets compared to CONTROL (P<0.001) in both experiments. In Exp. 1, FCR and carcass dressing were not affected by the 20% reduction in CONTROL diet and supplementation with fresh FL, while in Exp. 2 those parameters were negatively affected in TRAD with and without FL compared to CONTROL pigs. In vitro data showed that differences in nutritive values explained most differences in growth performances and carcass traits, but not the decrease in intake, since passage rate and voluntary intake are not taken into account in the in vitro model. Economical assessment showed that fresh foliage of FL could increase incomes, as long as their production costs remain marginal, but the incorporation of FL hays could not improve economical performances in pigs fed traditional unbalanced fibre-rich diets. [less ▲]

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See detailAdvances in virtual process chain and connection with online monitoring methods for first time tight manufacturing of thermoset laminated composites
Brauner, Christian; Miene, Andrea; Bruyneel, Michaël ULiege et al

in NAFEMS World Congress 2015 (2015)

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See detailIn vitro assessment of novel carbohydrates prebiotic potential in a co-inoculation model of the pig intestines
Tran, Thi Hanh Tham ULiege; Boudry, Christelle ULiege; Everaert, Nadia ULiege et al

in Book of Abstracts (2015)

Introduction: Innovative plant biomass fractionation methods produce new feed additives that could modulate the pig intestinal microbial population. Material and methods: Such novel indigestible ... [more ▼]

Introduction: Innovative plant biomass fractionation methods produce new feed additives that could modulate the pig intestinal microbial population. Material and methods: Such novel indigestible carbohydrates (CHO) were investigated for their prebiotic potential and their influence on Salmonella thyphimurium in a co-inocu¬lation in vitro fermentation model of the pig intestines. Inulin, cellobiose, pecto- (POS), iso-malto- (IMOS), xylo-oligosaccharides (XOS), and gluconic acid (GLU) were fermented by fecal microbes for 72h. Salmonella (7.3 log CFU/ml) were co-inoculated after 6h . Fer¬mentation kinetics was modeled and after 6, 12, 24 h, broth was analysed for short-chain fatty acid using HPLC and bacterial population using q-PCR. Results and discussion: Cellobiose was the fastest fermenting CHO followed by inulin and IMOS (P<0.01). After 6h, cellobiose yielded the highest SCFA production (684 mg/g) and lactate molar ratio (0.484). POS fermented slower. XOS and GLU were little fermented (150 and 175 mg SCFA/g after 24h). Nonetheless, GLU yielded the highest butyrate molar ratio (0.290 at 12h) (P<0.01). Although Salmonella counts did not differ, some CHO dis¬played obvious prebiotic properties, namely inulin and IMOS since they supported the highest growth of Lactobacilli and Bifidobacteria populations after 6 and 12h of fermen¬tation (8.18 to 8.56 log CFU/ml) (P<0.01). Cellobiose and GLU scored well for Lactobacilli too, but poorly for Bifidobacteria (6.41 to 6.92 log CFU/ml) (P<0.01). It is concluded that IMOS seem the most promising prebiotic but owing to their fermentation patterns yield¬ing high levels of lactate or butyrate, also cellobiose and GLU deserve further investigation in in vivo models. [less ▲]

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See detailLes nouveaux outils de diagnostic et de pronostic de la myopathie atypique
Habyarimana, Jean Belt Adélite ULiege; BOEMER, François ULiege; Amory, Hélène ULiege et al

in Proceeding de la 41ème Journée de la Recherche équine (2015)

In equines, ingestion of hypoglycin A, a toxin produced in the seeds (samaras) of sycamore maple (Acer pseudoplatanus) tree alters the energetic metabolism of muscle cells and results in atypical myopathy ... [more ▼]

In equines, ingestion of hypoglycin A, a toxin produced in the seeds (samaras) of sycamore maple (Acer pseudoplatanus) tree alters the energetic metabolism of muscle cells and results in atypical myopathy (AM). This alterations leads to a characteristic biochemical profile of acylcarnitines (AC) that enables to confirm the diagnosis of AM. This study aims at validating a methodology for the dosage of hypoglycin A in vegetal extracts but also in blood. In addition, the biochemical profile in AC has been determined in AM cases (5 survivors and 13 deceased) and in 5 horses suffering from exercise-induced myopathy. The AC profiles of these horses have been compared to the one of healthy horses (n = 35). This study showed that hypoglycin A was present in seeds and spring seedlings of sycamore and also in blood of AM cases horses. In addition, the establishment of AC profile contributes to the diagnostic and helps to assess the prognosis of AM cases. [less ▲]

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See detailPressure and velocity on an ogee spillway crest operating at high head ratio: experimental measurements and instrumentation
Peltier, Yann ULiege; Dewals, Benjamin ULiege; Archambeau, Pierre ULiege et al

in Carvalho, Rita; Pagliara, Stefano (Eds.) 2nd International workshop on hydraulic structures: data validation (2015)

This paper aims at validating pressure and velocity measurements conducted in two physical scale models of an ogee spillway crest operating at heads largely greater than the design head. The design head ... [more ▼]

This paper aims at validating pressure and velocity measurements conducted in two physical scale models of an ogee spillway crest operating at heads largely greater than the design head. The design head of the second model is 50% smaller than the one of the first model. No piles effect or air entrance is considered in the study. The velocity field is measured by Large Scale Particle Image Velocimetry. The relative pressure along the spillway crest is measured using pressure sensors. Comparisons of measured velocities between both spillways indicate low scale effects, the scaled-profiles collapsing in most parts of the flow. By contrast, measurements of relative pressure along the spillway crest differ for large heads. A theoretical velocity profile based on potential flow theory and expressed in a curvilinear reference frame is then fitted to the velocity measurements, considered as reference, for extrapolating the velocity at the spillway crest. Comparing the extrapolated velocity at the spillway crest and the velocity expressed from the relative pressure finally emphasizes that bottom pressure amplitudes are overestimated for the large spillway, while an averaging effect might operate for the pressure measurements on the small spillway. [less ▲]

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See detailVirtualizing the hose design process
Andry, Philippe; Coloos, Jérôme; Bruyneel, Michaël ULiege

in NAFEMS World Congress (2015)

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See detailComposite structures optimization including non-linear finite element analysis, design and manufacturing considerations
Bruyneel, Michaël ULiege; Grihon, Stéphane; Hudson, Leigh

in NAFEMS World Congress (2015)

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See detailIndustrial validation of progressive damage models for laminated composite materials and structures: automotive applications
Bruyneel, Michaël ULiege; Delsemme, Jean-Pierre; Jetteur, Philippe et al

in NAFELS World Congress 2015 (2015)

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See detailOn the projective geometry of Kalman filter
Carli, Francesca Paola ULiege; Sepulchre, Rodolphe ULiege

in Proc. of 54th IEEE Conference on Decision and Control (CDC), 2015 (2015)

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See detailLandslide Susceptibility Mapping with Data Mining Methods—a Case Study from Maily-Say, Kyrgyzstan
Braun, A.; Fernandez-Steeger, T.; Havenith, Hans-Balder ULiege et al

in Engineering Geology for Society and Territory - Volume 2: Landslide Processes (2015)

Abstract: Multiple factors, such as geology, high mountain topography, seismic activity, climatic conditions and mining activities cause significant landslide hazard in the region around Maily-Say ... [more ▼]

Abstract: Multiple factors, such as geology, high mountain topography, seismic activity, climatic conditions and mining activities cause significant landslide hazard in the region around Maily-Say, Kyrgyzstan. To assess the landslide susceptibility a database containing landslide information and geological, morphological and hydrological parameters associated with landslide occurrence was established and analyzed with different data mining algorithms. The most promising results were achieved with an Artificial Neural ... [less ▲]

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See detailRobust rendez-vous planning using the scenario approach and differential flatness
Dell'Elce, Lamberto ULiege; Kerschen, Gaëtan ULiege

in Advances in the Astronautical Sciences (2015)

There is a growing interest in uncertainty handling in the spacecraft dynamics community. In particular, robust optimization of spacecraft maneuvers is regarded as an important challenge. This paper ... [more ▼]

There is a growing interest in uncertainty handling in the spacecraft dynamics community. In particular, robust optimization of spacecraft maneuvers is regarded as an important challenge. This paper proposes an optimal control approach for orbital rendez-vous planning under stochastic dynamics and constraints. The method combines differential flatness theory with the scenario approach for optimization under uncertainties. By mapping state and control variables into a set of flat outputs, the enforcement of dynamics equations and boundary conditions is automatically satisfied. The rigorous foundations of the scenario approach lead to a finite-dimensional formulation of the problem which guarantees the feasibility of the solution within an arbitrary portion of the stochastic domain. The methodology is illustrated by means of two case studies involving a rendez-vous in elliptic orbit and a propellantless maneuver using differential drag, respectively. [less ▲]

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See detailHazard and Risk Related to Earthquake-Triggered Landslides
Havenith, Hans-Balder ULiege; Fan, X.; Torgoev, A.

in Engineering Geology for Society and Territory - Volume 2: Landslide Processes (2015)

Abstract This paper first analyses how important earthquake-induced landslide hazards are compared to other geohazards at world-wide scale. Further, we will outline where these hazards may have the ... [more ▼]

Abstract This paper first analyses how important earthquake-induced landslide hazards are compared to other geohazards at world-wide scale. Further, we will outline where these hazards may have the strongest impacts—at regional and local scale. In this regard, we consider the short-and long-term effects of geological, tectonic, climatic and morphological conditions. Hazard and risk related to these processes will also be analysed on the basis of a series of case histories: eg, the 1920 Haiyuan earthquake-landslide disaster in China. A ... [less ▲]

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See detailAnalyzing Access, Egress, and Main Transport Mode of Public Transit Journeys: Evidence from the Flemish National Household Travel Survey
Creemers, Lieve; Bellemans, Tom; Janssens, Davy et al

in Proceedings of the 94th Annual Meeting of the Transportation Research Board (2015)

The primary objective of this paper is to explore the influence of socio-demographic and contextual variables on the multimodal character of public transit journeys. Accounting for multimodality in public ... [more ▼]

The primary objective of this paper is to explore the influence of socio-demographic and contextual variables on the multimodal character of public transit journeys. Accounting for multimodality in public transit journeys is important from a demand modeling point of view, especially in the assessment of new projected public transit infrastructure. To meet the objective, data from the national household travel survey of Flanders (Belgium) is analyzed. Based on 2,202 public transit journeys, the main public transit mode choice (bus/tram/metro or train) and access/egress mode choice are simultaneously estimated using a multinomial logit model, and by explicitly making a distinction between unimodal and multimodal transit journeys. The results indicate that various socio-demographical (e.g. age, gender, level of education, household income) and contextual factors (e.g. journey distance, journey motive, urbanization degree, car availability) significantly influence the joint decision process. Total journey distance and car availability are identified as the most important explanatory variables. In terms of model performance, the model appears to yield satisfactory predictions, justifying the integration of the model in more general demand modeling frameworks. [less ▲]

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See detailY a-t-il une africitas ? Une analyse statistique et quantitative trois passions de Maurétanie Césarienne
Fialon, Sabine ULiege

in Pietquin, Paul; Longrée, Dominique; Fialon, Sabine (Eds.) Langues anciennes et analyse statistique : cinquante ans après – Distances textuelles et intertextualités (2015)

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See detailThree-node zero-thickness hydro-mechanical interface finite element for geotechnical applications
Cerfontaine, Benjamin ULiege; Dieudonné, Anne-Catherine ULiege; Radu, Jean-Pol ULiege et al

in Proceedings of coupled 2015 (2015)

The paper briefly presents the main features of a hydro-mechanical coupled finite element of interface. The mechanical problems takes into account the the detection of contact, the development of a ... [more ▼]

The paper briefly presents the main features of a hydro-mechanical coupled finite element of interface. The mechanical problems takes into account the the detection of contact, the development of a contact pressure, the shearing and the relative sliding between two solids. A three-node discretisation of hydraulic problem allows the representation of fluid flows across and in the plane of the interface. The method involves a drop of pressure between each side of the interface and the inner medium. The hydro-mechanical couplings come from 1) the definition of the total pressure acting on each side of the interface according to the Terzaghi’s principle; 2) the dependence of the permeability on the gap variation; 3) the variation of the fluid mass stored within the gap. [less ▲]

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See detailLe Transport de marchandises et de personnes sur le Nil en 823 A.H./1420 È.C.
Bauden, Frédéric ULiege

in Schubert, Alexander T.; Sijpesteijn, Petra M. (Eds.) Documents and the History of the Early Islamic World (2015)

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See detailAnalytic Model for The Motion About An Oblate Planet in The Presence Atmospheric Drag
Martinusi, Vladimir ULiege; Dell'Elce, Lamberto ULiege; Kerschen, Gaëtan ULiege

in Advances in The Astronautical Sciences (2015)

The paper introduces a new model for the motion about an oblate planet under the influence of the atmospheric drag. Both qualitative and quantitative insights are revealed, as well as closed-form ... [more ▼]

The paper introduces a new model for the motion about an oblate planet under the influence of the atmospheric drag. Both qualitative and quantitative insights are revealed, as well as closed-form equations of motion. The main tool consists in averaging the effects of both perturbations (oblateness and drag), and deriving the variational equations for the vectorial orbital elements. The model is singularity-free and may serve as an initial guess for control problems, as well as an analytic propagator. [less ▲]

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See detailModel based control for waste heat recovery rankine cycle system in heavy duty trucks
Grelet, Vincent; Dufour, Pascal; Nadri, Madiha et al

in Proceedings of the 3rd ASME International Seminar on ORC Power Systems (ORC) (2015)

Driven by future emissions legislations and increase in fuel prices engine, gas heat recovering has recently attracted a lot of interest. In the past few years, a high number of studies have shown the ... [more ▼]

Driven by future emissions legislations and increase in fuel prices engine, gas heat recovering has recently attracted a lot of interest. In the past few years, a high number of studies have shown the interest of energy recovery Rankine based systems for heavy duty trucks engine compounding. Recent studies have brought a significant potential for such a system in a Heavy Duty (HD) vehicle, which can lead to a decrease in fuel consumption of about 5% [Wang et al. (2011)] and reduce engine emissions. But many challenges still need to be faced before the vehicle integration. This paper presents a control strategy development for waste heat recovery Rankine based systems in heavy duty trucks. Due to the highly transient operating conditions, improving the control strategy of those systems is an important step to their integration into a vehicle. It is shown here that moving to more advanced control strategies than classical PIDs lead to some gains in terms of performance. Due to the limited availability and high operational cost of test bench, the validation of such a controller is done on a representative and previously validated model. [less ▲]

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See detailSpectroscopic constraints for low-mass asteroseismic targets
Morel, Thierry ULiege

in Asteroseismology of stellar populations in the Milky Way (2015)

A full exploitation of the observations provided by the CoRoT and Kepler missions depends on our ability to complement these data with accurate effective temperatures and chemical abundances. We review in ... [more ▼]

A full exploitation of the observations provided by the CoRoT and Kepler missions depends on our ability to complement these data with accurate effective temperatures and chemical abundances. We review in this contribution the major efforts that have been undertaken to characterise late-type, seismic targets based on spectra gathered as part of the ground-based, follow-up campaigns. A specific feature of the spectroscopic studies of these stars is that the gravity can be advantageously fixed to the more accurate value derived from the pulsation spectrum. We describe the impact that such an approach has on the estimation of Teff and [Fe/H]. The relevance of red-giant seismic targets for studies of internal mixing processes and stellar populations in our Galaxy is also briefly discussed. [less ▲]

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See detailLes traductions de récits de voyage et leurs arrière-plans politiques
Vandersmissen, Jan ULiege

in Coltelloni-Tranoy, Michèle (Ed.) La traduction, sa nécessité, ses ambiguïtés et des pièges (2015)

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See detailExperimental investigation of shear bolted connections for tubular racking structures
D'Antimo, Marina ULiege; Demonceau, Jean-François ULiege; Jaspart, Jean-Pierre ULiege et al

in XXV Congresso CTA: Salerno 1-3 ottobre 2015 (2015)

The competition in the field of storage racking structures is so that the companies proposing structural solutions for such structures are always looking for an optimisation of the structural elements ... [more ▼]

The competition in the field of storage racking structures is so that the companies proposing structural solutions for such structures are always looking for an optimisation of the structural elements, through the use of optimized thin wall members, and for an optimisation on site, by proposing easy and cheap connections to limit the time of construction. Within this framework, a simple connection with long bolts for tubular racking structures represents an interesting solution whose shear resistance is not covered by the rules provided by the current EC3. In order to verify the possibility to extend the formulations given in EC3 for connections between plates elements to this kind of connection solution in the present paper the results of an experimental campaign on 24 bolted connections, between hollow tube and long through bolts, are presented and analysed. In particular the attention is focused on the bearing failure mode around the tube’s hole due to bolt’s shank contact pressure. The performed analyses evidenced, preliminarily, that Eurocode 3 gives conservative values for the prediction of the bearing resistance. [less ▲]

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See detailHow to use ICT to help students to gain in confidence and efficiency in an algorithmic and computer programming course ?
Colaux, Catherine ULiege; Soyeurt, Hélène ULiege

in INTED2015 Proceedings (2015)

Algorithmic and computer programming in the bachelor’s degree is a course that demands a large involvement of students in performing non-standard exercises. This practical aspect is incompatible with ... [more ▼]

Algorithmic and computer programming in the bachelor’s degree is a course that demands a large involvement of students in performing non-standard exercises. This practical aspect is incompatible with classical ex cathedra course. It is the reason why we implement a blended learning approach much more responsive to students in a bachelor class of Bio Engineering at the Gembloux Agro Bio Tech Faculty (University of Liege, Belgium). This course alternates theoretical classes, take-home lessons with the help of online pedagogical resources and video and debriefing sessions where students have the possibility to benefit from teacher’ support. In doing so, the students are better prepared for the examination. They also gain in confidence and motivation. The teacher no longer simply transmits the knowledge but assists the students in their reflection process and their mastering of programming tools [less ▲]

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See detailDevelopment and validation of a 3D kinematic-based method for determining gait events during overground walking
Boutaayamou, Mohamed ULiege; Schwartz, Cédric ULiege; Denoël, Vincent ULiege et al

in IEEE International Conference on 3D Imaging (IC3D) (2015)

A new signal processing algorithm is developed for quantifying heel strike (HS) and toe-off (TO) event times solely from measured heel and toe coordinates during overground walking. It is based on a rough ... [more ▼]

A new signal processing algorithm is developed for quantifying heel strike (HS) and toe-off (TO) event times solely from measured heel and toe coordinates during overground walking. It is based on a rough estimation of relevant local 3D position signals. An original piecewise linear fitting method is applied to these local signals to accurately identify HS and TO times without the need of using arbitrary experimental coefficients. We validated the proposed method with nine healthy subjects and a total of 322 trials. The extracted temporal gait events were compared to reference data obtained from a force plate. HS and TO times were identified with a temporal accuracy ± precision of 0.3 ms ± 7.1 ms, and –2.8 ms ± 7.2 ms in comparison with reference data defined with a force threshold of 10 N. This algorithm improves the accuracy of the HS and TO detection. Furthermore, it can be used to perform stride-by-stride analysis during overground walking with only recorded heel and toe coordinates. [less ▲]

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See detailQualité diagnostique et efficacité d'un dispositif en ligne entraînant à la résolution de problèmes complexes en physique
Marique, Pierre-Xavier ULiege; Jacquet, Maud ULiege; Georges, François ULiege et al

in Actes du colloque ADMEE-Europe - Actes du 27e colloque qui s'est tenu en janvier 2015 à Liège (2015)

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See detailCombining satellite, aerial and ground measurements to assess forest carbon stocks in Democratic Republic of Congo
Beaumont, Benoît; Bouvy, Alban; Stephenne, Nathalie et al

in Geophysical Research Abstracts, Vol. 17, EGU2015-4765-2, 2015 (2015)

Monitoring tropical forest carbon stocks changes has been a rising topic in the recent years as a result of REDD+ mechanisms negotiations. Such monitoring will be mandatory for each country willing to ... [more ▼]

Monitoring tropical forest carbon stocks changes has been a rising topic in the recent years as a result of REDD+ mechanisms negotiations. Such monitoring will be mandatory for each country willing to benefit from these financial incentives in the future. Aerial and satellite remote sensing technologies offer cost advantages in implementing large scale forest inventories. Despite the recent progress made in the use of airborne LiDAR for C stocks estimation, no widely operational and cost effective method has yet been delivered for central Africa forest monitoring. Within the Maï Ndombe region of DRC, the EO4REDD project develops a method combining satellite, aerial and ground measurements. This combination is done in three steps: [1] mapping and quantifying forest cover changes using an object-based semi-automatic change detection (deforestation and forest degradation) methodology based on very high resolution satellite imagery (RapidEye), [2] developing an allometric linear model for above ground biomass measurements based on dendrometric parameters (tree crown areas and heights) extracted from airborne stereoscopic image pairs and calibrated using ground measurements of individual trees on a data set of 18 one hectare plots and [3] relating these two products to assess carbon stocks changes at a regional scale. Given the high accuracies obtained in [1] (> 80% for deforestation and 77% for forest degradation) and the suitable, but still to be improved with a larger calibrating sample, model (R2 of 0.7) obtained in [2], EO4REDD products can be seen as a valid and replicable option for carbon stocks monitoring in tropical forests. Further improvements are planned to strengthen the cost effectiveness value/REDD+ suitability in the 2nd phase of EO4REDD. This 2nd phase will include [A] specific model developments per forest type; [B] measurements of afforestation, reforestation and natural regeneration processes and [C] study of Sentinel data series potential use. [less ▲]

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See detailSignes et corrections dans le P.Vat. gr. 11v - Favorinos, De exsilio
Macedo, Gabriel ULiege

in Marganne, Marie-Hélène; Amato, Eugenio (Eds.) Entre papyrologie, philologie et littérature. Autour du traité "Sur l'Exil" de Favorinos d'Arles. Actes de la journée d'études, Nantes 13-11-2013 (2015)

A study of scribal practices, signs and corrections on the only known copy of Favorinos' De exsilio.

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See detailShear bolted connections for tubular racking structures: Numerical analysis
D'Antimo, Marina ULiege; Demonceau, Jean-François ULiege; Jaspart, Jean-Pierre ULiege et al

in Proceeding of XXV Congresso CTA: Salerno 1-3 ottobre 2015 (2015)

The prediction of the shear resistance of connections as presently given in Eurocode 3, Part 1-8, cannot be applied in a straightforward way to the connection for tubular racking structures realized by ... [more ▼]

The prediction of the shear resistance of connections as presently given in Eurocode 3, Part 1-8, cannot be applied in a straightforward way to the connection for tubular racking structures realized by means of long through bolts. In order to verify the possibility to extend the codified approach to such joint configurations, in the present paper a finite element model with three-dimensional solid elements is established investigating the behaviour of the connections under shear load in a wide range of variability of the geometrical parameters. The validation of the numerical model has been performed starting from the results of experimental tests already performed by the authors at the laboratory on Materials and Structures of the University of Liège. Based on the finite element results, the load displacement curves for all the assemblies were successfully predicted evidencing the important role played by the hole’s geometry and reduced diameter of the bolts on the initial stiffness of the connections. The results of a parametric study by means of a calibrated FE model in Abaqus/CAE allowed to verify the possibility to extend the formulations provided by EC3 for predicting the bearing resistance of plates to these kind of connections and to analyse the influence of the main parameters governing the bearing resistance: the distance e1 between the hole and the edge of the tube, the distance e2 between the hole and the lateral edge of the plate composing the tube section and the thickness t of the tube. [less ▲]

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See detailCorps commun et rupture anthropologique dans la schizophrénie
Englebert, Jérôme ULiege

in Penser la psychose : actes du colloque du 14-16 novembre 2013 (2015)

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See detailAnalytic solution for the relative motion of satellites in near-circular low-Earth orbits
Martinusi, Vladimir ULiege; Dell'Elce, Lamberto ULiege; Kerschen, Gaëtan ULiege

in Proceedings of the AAS/AIAA Space FLight Mechanics Meeting (2015)

The paper presents the solution to the problem of the relative motion between two satellites orbiting Earth under the influence of the oblateness and atmospheric drag perturbations. Starting from the ... [more ▼]

The paper presents the solution to the problem of the relative motion between two satellites orbiting Earth under the influence of the oblateness and atmospheric drag perturbations. Starting from the analytic solution to the problem of the absolute motion, the closed-form equations of motion are obtained. No simplifying assumptions are made on the relative dynamics. [less ▲]

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See detailUse of polypropylene fibers coated with nano-silica particles into a cementitious mortar
Coppola, Bartolomeo ULiege; Di Maio, Luciano; Scarfato, Paola et al

in POLYMER PROCESSING WITH RESULTING MORPHOLOGY AND PROPERTIES: FEET IN THE PRESENT AND EYES AT THE FUTURE (2015)

Fiber reinforced cementitious composite (FRCC) materials have been widely used during last decades in order to overcome some of traditional cementitious materials issues: brittle behaviour, fire ... [more ▼]

Fiber reinforced cementitious composite (FRCC) materials have been widely used during last decades in order to overcome some of traditional cementitious materials issues: brittle behaviour, fire resistance, cover spalling, impact strength. For composite materials, fiber/matrix bond plays an important role because by increasing fiber/matrix interactions is possible to increase the behaviour of the entire material. In this study, in order to improve fiber to matrix adhesion, two chemical treatments of polypropylene fibers were investigated: alkaline hydrolysis and nano-silica sol-gel particles deposition. Treatmtents effect on fibers morphology and mechanical properties was investigated by scanning electron microscopy (SEM) and tensile tests. SEM investigations report the presence of spherical nano-silica particles on fiber surface, in the case of sol-gel process, while alkaline hydrolysis leads to an increase of fibers roughness. Both treatments have negligible influence on fibers mechanical properties confirming the possibility of their use in a cementitious mortar. Pullout tests were carried out considering three embedded length of fibers in mortar samples (10, 20 and 30 mm, respectively) showing an increase of pullout energy for treated fibers. The influence on fiber reinforced mortar mechanical properties was investigated by three-point flexural tests on prismatic specimens considering two fibers length (15 and 30 mm) and two fibers volume fractions (0.50 and 1.00 %). A general increase of flexural strength over the reference mix was achieved and an overall better behaviour is recognizable for mortars containing treated fibers. [less ▲]

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See detailLearning the Tactile Signatures of Prototypical Object Parts for Robust Part-based Grasping of Novel Objects
Hyttinen, Emil; Kragic, Danica; Detry, Renaud ULiege

in IEEE International Conference on Robotics and Automation (2015)

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See detailLa fin du Paléolithique moyen dans le Nord de l’Europe : la question des origines du Lincombien-Ranisien-Jerzmanowicien
Flas, Damien ULiege

in Depaepe, Pascal; Goval, Emilie; Koehler, Héloïse (Eds.) et al Les plaines du Nord-Ouest : carrefour de l’Europe au Paléolithique moyen ? (2015)

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See detailDéveloppement récent de la culture de l'épeautre en Belgique
Burny, Philippe ULiege

in Watillon, Bernard; Bodson, Bernard (Eds.) Livre Blanc "Céréales", édition février 2015 (2015)

L'épeautre est une culture ancienne, pratiquée depuis des siècles, et qui a été progressivement remplacée, comme le seigle, par le froment. Il s'est cependant maintenu modestement dans quelques régions ... [more ▼]

L'épeautre est une culture ancienne, pratiquée depuis des siècles, et qui a été progressivement remplacée, comme le seigle, par le froment. Il s'est cependant maintenu modestement dans quelques régions aux sols plus pauvres et au climat plus rigoureux que ceux qui conviennent le mieux au froment. Les aspects "santé" prenant de plus en plus d'importance dans les pays riches, la bonne réputation de l'épeautre en ce domaine a permis un récent regain d'intérêt pour cette culture, dont les prix se sont envolés au cours de l'année 2014. Cette évolution est-elle durable ou ne sera-t-elle qu'un feu de paille ? [less ▲]

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See detailThe Syntax-Semantics Interface in Earlier Egyptian: a Case Study in Verbs of Cognition
Winand, Jean ULiege

in Allen, James P.; Collier, Mark; Stauder, Andréas (Eds.) Coping with Obscurity: the Brown Workshop on Earlier Egyptian Grammar (2015)

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See detailMonte Carlo Simulations of Autorotative Dynamics of a Simple Tower Crane Model
Vanvinckenroye, Hélène ULiege; Denoël, Vincent ULiege

in Proceedings of the 14th International Conference on Wind Engineering (2015)

The increasing number of crane accidents recorded over the last years might be understood as a need for progress on crane modeling. The induced risk of self-excited vibrations has already been ... [more ▼]

The increasing number of crane accidents recorded over the last years might be understood as a need for progress on crane modeling. The induced risk of self-excited vibrations has already been investigated through numerous experiments. This work presents a simple numerical model of a crane in a turbulent wind field, in order to support the available experimental approaches. First, the problem is defined with the necessary assumptions of the model. Second, the equation of motion is developed and wind characteristics are detailed. This equation presents several specificities requiring dedicated resolution methods. In a first analysis, the crane model is simplified in order to approach the behavior of the parametric pendulum and enable a general comparison of both responses. Indeed, the parametric pendulum is a well-known problem that is already widely described in the literature. In a second step, the response of the crane is studied under a realistic stochastic wind load with the full model. [less ▲]

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See detailKonceptualizacija prava na državljanstvo u jurisprudenciji Europskog suda za ljudska prava
Mazur Kumric, Nives ULiege

in The Legal System and Protection Against Discrimination, Collection of Papers, Second Volume, Kosovska Mitrovica, 2015 (2015)

The notion of citizenship rests on the cleavage between national and international law as a matter predominantly shaped by state's internal acts, in accordance with limits determined by the state's ... [more ▼]

The notion of citizenship rests on the cleavage between national and international law as a matter predominantly shaped by state's internal acts, in accordance with limits determined by the state's interrelations with other states and rules of international law. The respective dichotomy generates further branching of the notional structure, making it multilayered, multidimensional and fluid. The simplified definition of citizenship conceptualises it as a real and effective link between the state and an individual, however, in social reality the notion transcends the respective formal perception and interferes with conceptions of identity, belonging and sentiments. With the aim of positioning citizenship within the domain of contemporary international human rights protection, this paper focuses on the analysis of jurisprudence of the European Court of Human Rights which has in several of its recent judgments provided for an original interpretation of the right to citizenship, subsuming it under the ambit of Article 8 of the Convention for the Protection of Human Rights and Fundamental Freedoms on the right to private and family life. Although Conventional norms do not grant the right to citizenship expressis verbis, an insight into three judgments (Genovese v. Malta, Mennesson v. France and Jeunesse v. the Netherlands) demonstrates that the Court's innovative interpretation of Article 8 has proved that flexible notions of private and family life are comparable enough with citizenship to embrace the aspects of a person's social identity which make up the essence of the concept of citizenship. [less ▲]

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See detailL'exploitation laitière de demain : point de vue des éleveurs sur le contrôle environnemental et le contexte social de la ferme
Froidmont, E.; Vanwindekens, Frédéric ULiege; Masure, A. et al

in CRA-w (Ed.) Carrefour des Productions animales, 20ème édition "L'exploitation laitière wallonne de demain : du point de vue des acteurs aux propositions de la recherche" (2015)

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See detailCastelvecchio Calvisio: et pourquoi pas un scénario ruskinien?
Houbart, Claudine ULiege; Dawans, Stéphane ULiege

in Crisan, Rodica; Fiorani, Donatella; Kealy, Loughlin (Eds.) et al Restoration/Reconstruction. Small Historic Centres. Conservation in the Midst of Change, EAAE IV meeting and workshop (Roma - Castelvecchio Calvisio, October 28-31, 2013) (2015)

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See detailTowards an Archaeological Information System: Improving the Core Data Model
Van Ruymbeke, Muriel ULiege; Carré, Cyril ULiege; Delfosse, Vincent ULiege et al

in Giligny, F.; Djindjian, F.; Costa, L. (Eds.) et al CAA 2014 21st century Archaeology : Concepts methods and tools : Proceedings of the 42nd Annual Conference on Computer Applications and Quantitative Methods in Archaeology (2015)

The use of Geographic Information Systems within the field of archaeology has been demonstrated through numerous scientific studies in the past. However, such systems do not usually encompass all the ... [more ▼]

The use of Geographic Information Systems within the field of archaeology has been demonstrated through numerous scientific studies in the past. However, such systems do not usually encompass all the characteristics of the archaeological data. Since 2009, the Geomatics Unit of the University of Liège works on the development of a robust, flexible and dynamic Archaeological Information System. The interdisciplinary research group focuses on the development of a conceptual data model based on the general characteristics of archaeological data namely its spatio-temporal, heterogeneous, multimodal and imperfect character. The following paper exposes latest output and especially the integration of archaeological data ambiguity [less ▲]

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See detailIñigo de Brizuela et Andrés de Soto, deux regards sur la politique
Pirlet, Pierre-François ULiege

in Labrador Arroyo, Felix (Ed.) II Encuentro de Jóvenes Investigadores en Historia Moderna, Universidad Rey Juan Carlos, Madrid, (1-2 juillet 2013) (2015)

Iñigo de Brizuela and Andrés de Soto, both confessors of the Archdukes were key figures at Brussels' court. Each of them used to influence the policy, using different bias. But they weren't trying to ... [more ▼]

Iñigo de Brizuela and Andrés de Soto, both confessors of the Archdukes were key figures at Brussels' court. Each of them used to influence the policy, using different bias. But they weren't trying to reach similar goals: Brizuela carefully acted to preserve Spanish interests in the Catholic Netherlands, while de Soto struggled for a Catholic victory. Their political actions and its reasons will be covered by this paper. [less ▲]

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See detailGeophysical investigation of the Hockai Fault Zone, Eastern Belgium
Havenith, Hans-Balder ULiege; Nguyen, Frédéric ULiege; Halleux, Lucien ULiege et al

in EGU General Assembly Conference Abstracts (2015)

In the frame of a regional project evaluating the geothermal potential of the Wallonian Region of Belgium, the Hockai Fault Zone has been identified as one of the most interesting targets. It is a ... [more ▼]

In the frame of a regional project evaluating the geothermal potential of the Wallonian Region of Belgium, the Hockai Fault Zone has been identified as one of the most interesting targets. It is a seismically active fault zone that hosted the largest historical earthquake in Northwestern Europe, the M6-6.5 Verviers event in 1692 as well as a swarm of small earthquakes that was recorded in 1989-90. On the surface, the presence of the fault zones is marked by a series of geomorphic features, such as several landslides near the borders in the northern part, repeated NW-SE oriented scarps all along the Eastern border (over a distance of 40 km), river diversions and captures with formation of paleo-valleys.... [less ▲]

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See detailChronophage, le design empathique?
Elsen, Catherine ULiege

in Findeli, Alain; Borja de Mozota, Brigitte; Froehlicher, Thomas (Eds.) et al Actes des 9èmes Ateliers de la Recherche en Design (2015)

Cet article envisage la dimension chronophage de l’approche empathique, une des dimensions fondamentales du design d’expérience. Quels efforts investir dans le raisonnement « centré-utilisateurs », et ... [more ▼]

Cet article envisage la dimension chronophage de l’approche empathique, une des dimensions fondamentales du design d’expérience. Quels efforts investir dans le raisonnement « centré-utilisateurs », et pour quels résultats ? L’examen des données récoltées au fil de quatre protocoles (un empirique et trois expérimentaux) révèle comment une “créativité disciplinée” peut outiller une approche plus agile des besoins-utilisateurs. [less ▲]

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See detailA FE² model for Hydro-mechanical coupling
van den Eijnden, Abraham Pieter ULiege; Collin, Frédéric ULiege; Bésuelle, Pierre et al

in Chau, Kam-Tim; Zhao, Jidong (Eds.) Bifurcation and Degradation of Geomaterials in the New Millenium (2015)

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See detailGIS-Based Landslide Susceptibility Mapping in the Great Lakes Region of Africa, Case Study of Bujumbura Burundi
Nibigira, Léonidas ULiege; Draidia, Salah ULiege; Havenith, Hans-Balder ULiege

in Engineering Geology for Society and Territory - Volume 2: Landslide Processes (2015)

Abstract: Landslides in Central Africa represent a constant threat to the population. The present work took its motivation from the increasing number of recorded incidents in recent times. It is focused ... [more ▼]

Abstract: Landslides in Central Africa represent a constant threat to the population. The present work took its motivation from the increasing number of recorded incidents in recent times. It is focused on the analysis of mass movements in a regional context. Remote sensing based on the use of satellite images (Pleiades images of 2011) and aerial photographs (1957, 1958 and 1981) allowed us to identify instabilities at different scales. The study of these mass movements and the characterization of the processes governing ... [less ▲]

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See detailA preliminary regional assessment of earthquake-induced landslide susceptibility for Vrancea Seismic Region
Micu, Mihai; Balteanu, Dan; Iunescu, Constantin et al

in EGU General Assembly Conference Abstracts (2015)

In seismically-active regions, earthquakes may trigger landslides enhancing the short-to-long term slope denudation and sediment delivery and conditioning the general landscape evolution. Co-seismic slope ... [more ▼]

In seismically-active regions, earthquakes may trigger landslides enhancing the short-to-long term slope denudation and sediment delivery and conditioning the general landscape evolution. Co-seismic slope failures present in general a low frequency - high magnitude pattern which should be addressed accordingly by landslide hazard assessment, with respect to the generally more frequent precipitation-triggered landslides. The Vrancea Seismic Region, corresponding to the curvature sector of the Eastern Romanian Carpathians, represents the most active sub-crustal (focal depth > 50 km) earthquake province of Europe. It represents the main seismic energy source throughout Romania with significant transboundary effects recorded as far as Ukraine and Bulgaria. During the last 300 years, the region featured 14 earthquakes with M>7, among which seven events with magnitude above 7.5 and three between 7.7 and 7.9. Apart from the direct damages, the Vrancea earthquakes are also responsible for causing numerous other geohazards, such as ground fracturing, groundwater level disturbances and possible deep-seated landslide occurrences (rock slumps, rock-block slides, rock falls, rock avalanches). ... [less ▲]

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See detailWaste heat recovery rankine cycle based system modeling for heavy duty trucks fuel saving assessment
Grelet, Vincent; Lemort, Vincent ULiege; Nadri, Madiha et al

in Proceedings of the 3rd ASME International Seminar on ORC Power Systems (ORC) (2015)

This paper presents a method to model heat exchangers used in waste heat recovery Rankine based systems in heavy duty trucks. The method is developed to predict both transfer and working fluid physical ... [more ▼]

This paper presents a method to model heat exchangers used in waste heat recovery Rankine based systems in heavy duty trucks. The method is developed to predict both transfer and working fluid physical properties such as temperature and density after the heat exchange process. Due to the flexibility of such a model, it can be used for a numerous quantity of fluids including water-alcohol mixture. A validation of the developed model is shown and compared to steady state and dynamic test results. The model shows good performance as well in terms of accuracy, which is in the range of 5K error as in computational time which is faster than real time and makes it suitable for concept optimization, control and fuel economy evaluation. [less ▲]

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See detailChallenges in teaching architectural morphogenesis
Stals, Adeline ULiege; Elsen, Catherine ULiege; Jancart, Sylvie ULiege et al

in Proceedings of the 3rd International Conference for Design Education Researchers (2015)

Reviewing the successive cognitive, operative and constructive models of architectural morphogenesis through time, the paper first recalls students and teachers in architecture how designers started ... [more ▼]

Reviewing the successive cognitive, operative and constructive models of architectural morphogenesis through time, the paper first recalls students and teachers in architecture how designers started experimenting digital design to reach self-generative, morphogenetic morphologies. Generally referred to as “non-standard architecture”, this innovative morphogenesis favours a new kind of spatial and architectural audacity but also generates three types of rupture: i) a rupture between form and structure; ii) a rupture in terms of process continuity and iii) a rupture in terms of multi-disciplinary collaboration. We consequently have to acknowledge the fact that, at a current state, non-standard architecture still struggles in terms of self-coherency and implementation, leaving a large amount of projects at their virtual, embryonic state especially in pedagogical contexts. We believe the challenge resides in overcoming the overly simplistic and reductionist appeal of purely formal and visual non-standard architecture: these morphologies should, on the contrary, be intrinsically defined by their form and structure relationship. We suggest such reconciliation should occur during the early stages of architectural education. Two experimental instruments, that perhaps constitute interesting renewed pedagogical models, are reported in this paper and we conclude by listing the remaining challenges when it comes to the teaching of architectural morphogenesis. [less ▲]

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See detailAnalyse des contraintes de développement du fruit de la passion au Burundi. Cas de la commune Matongo province Kayanza
Bashangwa Mpozi, Bosco ULiege; Ndimanya, Patrice; Lebailly, Philippe ULiege

in Brot, Jean (Ed.) Les Cahiers de l'Association Tiers-Monde n° 30-2015 : XXXes Journées sur le Développement "Ethique, entrepreneuriat et développement" (2015)

Face à une situation de manque de terre et de pression démographique sans aucune amélioration des techniques de production, le choix des cultures à pratiquer permettant de rentabiliser la petite surface ... [more ▼]

Face à une situation de manque de terre et de pression démographique sans aucune amélioration des techniques de production, le choix des cultures à pratiquer permettant de rentabiliser la petite surface agricole disponible devient donc crucial pour les producteurs de Matongo en particulier et du Burundi en général. C'est dans ce contexte que le fruit de la passion est intégré dans les systèmes de production de certains ménages de Matongo dans le but d'améliorer leurs conditions de vie grâce à un supplément de revenu. Vu l'état actuel de la vulnérabilité de l'agriculture et de l'économie dans cette commune, il s'avère important de connaître les contraintes rencontrées par les adoptants du fruit de la passion en tenant compte de l'environnement dans lequel se pratique sa culture. [less ▲]

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See detailEmpirical model of a variable speed vapor injection compressor for air source heat pump dynamic modeling
Dechesne, Bertrand ULiege; Bertagnolio, Stéphane

in International conference on compressors and their systems (2015)

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See detailModeling accessibility to schools: the case of Wallonia, Belgium
Maldague, Hubert ULiege; Teller, Jacques ULiege; Cools, Mario ULiege

in Rasouli, Soora; Timmermans, Harry (Eds.) Current Issues in Transportation Research, Proceedings of the BIVEC/GIBET Transport Research Days 2015 (2015)

Several recent studies about school mobility highlighted the significant decline of active modes and public transport's modal shares. Associated with this decline, it can be observed that distances ... [more ▼]

Several recent studies about school mobility highlighted the significant decline of active modes and public transport's modal shares. Associated with this decline, it can be observed that distances between home and schools have been rising the last two decades. To develop appropriate policies alleviating the negative effects of the increased motorization in the school commute, a diagnosis of probable causes is required. To perform this diagnosis, we develop an accessibility-based methodology using data stemming from the Belgian national household travel (BELDAM) survey. Gamma-functions are calibrated to describe the use of different transport modes according to their relative travel times. Data from OpenStreetMap are used to describe the Walloon roads network in terms of the maximum allowed vehicle speed and length for each link. Properties of the network are modified to match with other transport modes. Maps of accessibility to schools are computed for each transport mode by merging the value of access time represented by isochrones and the calibrated gamma-functions. [less ▲]

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See detailTiers et procédure - Rapport provisoire pour la Belgique
Frankignoul, Laurent ULiege

in Les tiers (2015)

Il s'agit du rapport provisoire publié sur le site de l'Association Henri Capitant ; un rapport définitif fera l'objet d'une publication dans la collection consacrée aux journées internationales de l ... [more ▼]

Il s'agit du rapport provisoire publié sur le site de l'Association Henri Capitant ; un rapport définitif fera l'objet d'une publication dans la collection consacrée aux journées internationales de l'Association [less ▲]

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See detailThematic analysis and the 3rd person plural suffix pronoun in the Medinet Habu historical inscriptions
Gillen, Todd Jonathan ULiege

in Kousoulis, Panagiotis (Ed.) Proceedings of the Tenth International Congress of Egyptologists (2015)

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See detailSegmentation of gait cycles using foot-mounted 3D accelerometers
Boutaayamou, Mohamed ULiege; Bruls, Olivier ULiege; Denoël, Vincent ULiege et al

in Proceedings of the IEEE International Conference on 3D Imaging 2015 (2015)

We describe a new gait segmentation method based on the continuous wavelet transform to identify stride-by-stride gait cycles from measurements of foot-mounted three-dimensional (3D) accelerometers. The ... [more ▼]

We describe a new gait segmentation method based on the continuous wavelet transform to identify stride-by-stride gait cycles from measurements of foot-mounted three-dimensional (3D) accelerometers. The detection of such gait cycles is indeed a crucial step for an accurate extraction of relevant gait events such as heel strike, toe strike, heel-off, and toe-off. We demonstrate the ability of this segmentation method, used in conjunction with a validated extraction algorithm, to calculate the following gait (duration) parameters for each gait cycle during the gait of a healthy young subject and of an elderly subject with Parkinson’s disease (PD) in OFF and ON states: durations of (1) loading response, (2) mid-stance, (3) push-off, (4) stance, (5) swing, (6) stride, (7) step, and (8) double support phases. The experimental results show that the proposed method can extract relevant refined gait parameters to quantify subtle gait disturbances in subjects with PD. [less ▲]

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See detailModeling and control of Rankine based waste heat recovery systems for heavy duty trucks
Grelet, Vincent; Dufour, Pascal; Nadri, Madiha et al

in Proceedings of the 9th International Symposium on Advanced Control of Chemical Processes (2015)

This paper presents a control oriented model development for waste heat recovery Rankine based control systems in heavy duty trucks. Waste heat recovery systems, such as Rankine cycle, are promising ... [more ▼]

This paper presents a control oriented model development for waste heat recovery Rankine based control systems in heavy duty trucks. Waste heat recovery systems, such as Rankine cycle, are promising solutions to improve the fuel efficiency of heavy duty engines. Due to the highly transient operating conditions, improving the control strategy of those systems is an important step to their integration into a vehicle. The system considered here is recovering heat from both EGR and exhaust in a serial arrangement and use a mixture of water and ethanol as working fluid. The paper focuses on a comparison of a classical PID controller which is the state of the art in the automotive industry and a nonlinear model based controller in a simulation environment. The nonlinear model based controller shows better performance than the PID one and ensures safe operation of the system. [less ▲]

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See detailSensitivity analysis for climate change impacts, adaptation and mitigation projection with pasture models
Bellocchi, G.; Ehrhardt, F.; Soussana, J. F. et al

in Climate-Smart Agriculture 2015 (2015)

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See detailA modular approach dedicated to dam-break and dam-breaching modelling
Stilmant, Frédéric ULiege; Dewals, Benjamin ULiege; Erpicum, Sébastien ULiege et al

in Advances in Hydroinformatics (2015)

The paper presents an integrated tool for dam-break hazard modelling. It is based on a two-dimensional, depth-averaged hydraulic model that uses a conservative and shock-capturing finite volume scheme on ... [more ▼]

The paper presents an integrated tool for dam-break hazard modelling. It is based on a two-dimensional, depth-averaged hydraulic model that uses a conservative and shock-capturing finite volume scheme on a Cartesian grid. The hydraulic model is designed so that different zones within the computation domain can be modelled with different spatial resolutions and/or different model enhancements (e.g. pressurised flows, sediment transport, etc.). The two-dimensional model can be coupled with lumped models that compute the water stage in reservoirs and the outflow discharge through hydraulic structures, in case of normal operating, failure of a valve or breaching processes. These features make hydraulic modelling versatile and computationally efficient. They enable the definition of different failure scenarios, which is of prominent importance given the uncertainty of such a phenomenon. If several hydraulic structures are involved, the procedure takes the behaviour of each structure into account. The sensitivity of the results with respect to the interactions between the flow and the terrain (roughness coefficient, collapse of buildings, breaching process) can be analysed. The results of the hydraulic model are handled thanks to a graphical user interface that provides one-, two- and three-dimensional views and animations of the unsteady flow-field and enables the understanding and verification of the results. Danger maps are generated based on the results of one or more ‘worst-case’ scenarios. In case of a complete risk analysis, the danger maps are combined with data on the exposure and vulnerability of elements at risk for the computation of the corresponding damage. [less ▲]

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See detailGestes professionnels, propriété d’accompagnement, dispositif de validation des acquis : Trois exemples de couplage entre un dispositif de recherche et un dispositif de formation Symposium court proposé par les universités de Lille 1 et de Liège
Faulx, Daniel ULiege; Leclercq, Gilles; Vermelle, Marie-Christine

in Actes du 28ème Colloque de l'Association Internationale de Pédagogie Universitaire (2015)

Ce symposium réunit des chercheurs et des praticiens d’une université belge et d’une université française autour du thème : « quelles recherches sur/pour les enseignements » ? Notre proposition de ... [more ▼]

Ce symposium réunit des chercheurs et des praticiens d’une université belge et d’une université française autour du thème : « quelles recherches sur/pour les enseignements » ? Notre proposition de symposium court s’inscrit dans la continuité des recherches menées dans le pôle Codeus du laboratoire Trigone Cirel[1] et de l’Unité d’Apprentissage et de Formation continue des Adultes de l’Université de Liège (UAFA-ULg)[2]. Nous l’avons intitulé : gestes professionnels, propriété d’accompagnement et dispositif de validation des acquis ; trois exemples de couplage entre un dispositif de recherche et un dispositif de formation. Dans les trois contributions que nous proposons, il sera en effet question de l’association entre une activité de recherche qui se nourrit d’une activité de formation et d’une activité de formation qui exploite l’activité de recherche. Cela nous permettra de rendre compte de travaux menés en cours de formation à des échelles différentes : - à l’échelle du geste singulier de l’enseignant pour la première contribution ; - à l’échelle de la propriété d’accompagnement pour la deuxième ; - à l’échelle d’un dispositif de validation des acquis de l’expérience pour la troisième. Nous commencerons donc ce symposium en ciblant une préoccupation d’ordre micro-pédagogique pour en arriver, par la suite, à des préoccupations plus englobantes. Cela nous permettra de questionner, de différents points de vue, les modalités de collaboration entre dispositifs de formation et dispositifs de recherche, ce qui nous conduira à engager un débat autour des questions suivantes : -.comment les dispositifs de recherche mis en œuvre s’emparent-t-il des dispositifs de formation ? - comment le matériau de recherche est-il collecté, choisi, interprété, analysé, discuté ? - quels sont les cadres de références théoriques et méthodologiques mobilisés, à quoi servent-ils ? - comment l’activité de recherche est-elle distribuée entre les acteurs ? - peut-on parler de savoirs constitués et quels sont-ils ? - comment les dispositifs de formation exploitent-t-ils les dispositifs de recherche, comment s’en emparent-ils ? - etc [less ▲]

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See detailIndividualized Nutrition of preterm: What are the challenges?
SENTERRE, Thibault ULiege

in SENTERRE, Thibault (Ed.) Symposium on Intrauterine and Early Postnatal Nutrition: Long-Term Outcome (2015)

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See detailUne étude micropédagogique des gestes professionnels et de leurs impacts sur l’activité d’apprentissage dans le contexte de l’enseignement universitaire
Fossion, Gilles ULiege; Burlet, Géraldine ULiege; Faulx, Daniel ULiege

in Actes du 28ème Colloque de l'Association Internationale de Pédagogie Universitaire (2015)

Selon la loi de Pareto, 80 % des effets sont produits par 20 % des causes. Transféré au contexte universitaire, on dira que les petites différences de comportement, notamment langagier, entre enseignants ... [more ▼]

Selon la loi de Pareto, 80 % des effets sont produits par 20 % des causes. Transféré au contexte universitaire, on dira que les petites différences de comportement, notamment langagier, entre enseignants conduisent à des effets sur les étudiants qui peuvent être fortement diversifiés. C’est cette observation qui nous a encouragé à développer les études micropédagogiques , c’est-à-dire l’observation fine de l’activité des enseignants pour saisir ce qui la caractérise et la rend plus ou moins « efficace » (le terme étant évidemment relatif et à définir en fonction des contextes, des objectifs poursuivis et des apprenants). Le principe méthodologique de l’étude micropédagogique consiste donc à combiner (1) l’analyse fine de l’activité enseignante et (2) ses effets auprès des apprenants. Dans le cadre de cette communication, nous présentons l’intégration d’un dispositif de recherche et d’un dispositif d’apprentissage situés dans cette perspective d’approche micropédagogique. Durant plusieurs cours, deux caméras filment simultanément d’une part l’enseignant qui réalise un exposé et d’autre part le groupe d’étudiants. Lors de la séquence pédagogique suivante, les apprenants visionnent le double film (en split screen) et le commentent collectivement, en reliant les observations sur l’activité de l’enseignant et les effets que cela a eu sur leur dynamique d’apprentissage. Il en ressort que plusieurs actions du formateur ont fort impact sur l’apprentissage et la motivation, notamment : les modes de gestion du groupe, la formulation des questions, les modes de réactions de l’enseignant aux interventions des participants, les types d’exemples choisis, l’utilisation des analogies ou encore la projection dans le passé et dans le futur. Selon la manière de procéder de l’enseignant, ils contribueront plus ou moins à l’apprentissage et à la dynamique motivationnelle des étudiants. Par cette démarche de recherche, les apprenants produisent à la fois de la connaissance scientifique et développent leur propre apprentissage sur les contenus de l’étude micropédagogique. [less ▲]

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See detailHeterogeneity of multitasking abilities in schizophrenia.
Laloyaux, Julien ULiege; Van der Linden, Martial ULiege; Laroi, Frank ULiege

in Van Overwalle, Frank; Uzieblo, Kasia; Rossi, Gina (Eds.) et al Abstract book of the Annual meeting of the Belgian Association for Psychological Sciences (2015)

Difficulties in everyday life activities are core features of persons diagnosed with schizophrenia, and in particular for those activities requiring multitasking capacities. Multitasking refers to ... [more ▼]

Difficulties in everyday life activities are core features of persons diagnosed with schizophrenia, and in particular for those activities requiring multitasking capacities. Multitasking refers to activities (e.g. preparing a meal) where the person has to: (a) carry out and alternate between different tasks that vary in terms of priority, difficulty and duration; (b) define the tasks’ targets; (c) and face unexpected problems during the realization of these tasks. Moreover, schizophrenia is characterized by a great heterogeneity in regard to their everyday life difficulties and cognitive functioning. At present, patients’ multitasking capacities have not been adequately examined in the literature due to an absence of suitable assessment strategies. We thus recently developed a computerized real-life activity task designed to take into account the complex and multitasking nature of certain everyday life activities where participants are required to prepare a room for a meeting (i.e. the Computerized Meeting Preparation Task, CMPT). The aim of this study was to examine the multitasking abilities in persons diagnosed with schizophrenia and in particular the existence of subgroups of patients in regard to their performances on cognitive measures and on the CMPT. Sixty-two patients diagnosed with schizophrenia and 39 paired healthy controls completed the CMPT and a cognitive battery. The results reveal that the CMPT possesses good sensitivity and suggest three underlying constructs of multitasking (Memory, Planning and Intent), which were found to be underpinned by several cognitive functions and multitasking aspects. Moreover, cluster analyses revealed subgroups of patients differing in terms of their cognitive and CMPT performances. Taken together, these results show the need for a cognitive model of multitasking abilities in persons diagnosed with schiozphrenia. Taken together, this cognitive model and the CMPT, could be a good basis for cognitive interventions of multitasking abilities in schizophrenia. Finally, the results underline the heterogeneity of schizophrenia. [less ▲]

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