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See detailEtude épidémiologique des comportements alimentaires au service de la promotion de la santé
Lair, ML; Alkerwi, A; Couffignal, S et al

Conference (2009)

Detailed reference viewed: 11 (4 ULg)
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See detailNovel micro-CT based local strain mapping tool to characterize the failure modes of bone tissue engineering scaffolds
Kerckhofs, Greet ULg; Van Bael, Simon; Moesen, Maarten et al

Conference (2009)

Detailed reference viewed: 13 (1 ULg)
See detailLes perturbateurs endocriniens et le monde agricole
Charlier, Corinne ULg

Conference (2009)

Detailed reference viewed: 16 (5 ULg)
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See detailMacrophyte biological index for rivers (MBIR) application for an ecological assessment of walloon rivers, prelilminary investigations.
Sossey Alaoui, Khadija ULg; Galoux, D.; Rosillon, Françis ULg

Conference (2009)

Samples were collected from 45 sites along the Walloon river network in 2007, in accordance with the Water Framework Directive (WFD, European Union, 2000), used to define the overall ecological status of ... [more ▼]

Samples were collected from 45 sites along the Walloon river network in 2007, in accordance with the Water Framework Directive (WFD, European Union, 2000), used to define the overall ecological status of rivers. Within each collected sample, macrophyte data were gathered at species level and the main water quality parameters were analyzed. This involved the use of two approaches: firstly, methods of ordination and classification (Principal Component Analysis and Multiple Factorial Analysis) and secondly, aquatic macrophyte community indexes. The Macrophyte Biological Index for Rivers (MBIR) was used to define the ecological status of the macrophyte community in response to eutrophication pressure. Four trophic qualities were detected in all the monitored stations: 56% of the sites showed a good trophic quality, with the Ardennes region in the leading position and only 2% of the sites showed a poor trophic quality. A Multiple Factorial Analysis (MFA) made it possible to regroup the species according to their ecological affinities and to specify their indicator values in relation to some abiotic parameters. As a result, a rivers typology was outlined based on this analysis. The dendrogram of the Hierarchical Cluster Analysis (HCA) gave three clusters determined by active variables of each compartment that defined functional parts of the Walloon network: Chiloscyphus polyanthos (L.) Corda, Rhynchostegium riparioides(Hedw.)C.Jens., Fontinalis squamosa(Hedw) and Ranunculus penicillatus (Dum.)Bb. showed an oligotrophic status and low mineralization in the Ardennes (GI), while P. pectinatus(Linne), Cladophora glomerata(Linnaeus)proved to be found more often in eutrophicated waters in the Region limoneuse (GIII). Pellia endvifolia (Dicks.)Dum, Fissidens crassipes(Br.Eur);Cinclidotus riparius (Web. & Mohr.) appeared in the Condroz and Famenne, rivers characterized by a high concentration of nitrogen (N-35. NO3-) (GII). [less ▲]

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See detailThe use of time use surveys to study activity participation: emerging issues
Cools, Mario ULg; Moons, Elke; Wets, Geert

Conference (2009)

Time use surveys often are carried out to identify, classify and quantify social behaviour of people by focusing on the activities that people perform. Time use data, in the transportation field often ... [more ▼]

Time use surveys often are carried out to identify, classify and quantify social behaviour of people by focusing on the activities that people perform. Time use data, in the transportation field often referred to as activity-based data, can be used to study a variety of sociological, economic, and technological phenomena. Studying behaviour, social networks and transport patterns are a few of the topics that can be analysed based on these time use data. This first introductory paper discusses some emerging issues in the collection of travel-related data such as automatic spatial information recording using cell phones and GPS, and survey design experiences. On the one hand new technology offers the opportunity to record at a relative low cost a wide variety of the data, while on the other hand new problems occur. One of such problems for instance is the problems of ‘cold starts’ faced with GPS devices, clouding the first minutes of recording after each restart of the device after it was turned off completely. Notwithstanding, applications of new technologies offer the opportunity for performing detailed space-time analyses in different fields ranging from epidemiology to transportation science. Some of these applications are highlighted in this session. Next to the advantages and potential risks of new technologies, this introductory paper also discusses the combination of different modes to analyze space-time behaviour. In particular, this study investigates potential mixed mode design effects, observed in a large activity-based travel survey, using a PDA application on the one hand, and traditional paper and pencil diaries on the other hand. The mixed-mode effects are analysed using heteroscedastic linear regression models, taking into account not only mode-effects, but also potential fatigue-effects. The results show that in this mixed-mode survey no attrition effects are present, and that the survey mode (PDA versus paper and pencil) has no direct impact on the quantities investigated (number of out-of-home activities reported and number of trips). [less ▲]

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See detailImplants dans le secteur esthétique: choix du timing et de la technique chirurgicale.
LAMBERT, France ULg

Conference (2009)

Les résultats esthétiques en implantologie sont déterminés par une harmonie tissulaire et prothétique. Plusieurs techniques chirurgicales sont décrites et le choix de celle-ci est déterminant pour obtenir ... [more ▼]

Les résultats esthétiques en implantologie sont déterminés par une harmonie tissulaire et prothétique. Plusieurs techniques chirurgicales sont décrites et le choix de celle-ci est déterminant pour obtenir un résultat esthétique optimal. Cet exposé décrit des techniques chirurgicales telles que: extraction/implantation immédiate, gestion d'alvéoles ou encore régénération osseuse. L'objectif est, à partir d'une situation clinique initiale, de déterminer le choix de la technique idéale ainsi que le timing chirurgical . [less ▲]

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See detailDo spiders capture attention in a bottom-up fashion and does fear have an impact?
Devue, Christel ULg; Belopolsky, Artem; Theeuwes, Jan

Conference (2009)

Fear-related stimuli (e.g. spiders) seem to be prioritized during visual selection when they are actively searched for. This is especially true if the observers fear them. It remains unclear whether such ... [more ▼]

Fear-related stimuli (e.g. spiders) seem to be prioritized during visual selection when they are actively searched for. This is especially true if the observers fear them. It remains unclear whether such stimuli capture attention automatically when they are task-irrelevant. To answer that question, we used the additional singleton paradigm (Theeuwes, 1992) in which participants searched for a shape singleton (a circle among diamonds) while a fear-related stimulus (a spider) or a fear-unrelated stimulus (a butterfly) was also present in the display. To assess whether fear affects the extent of a possible bottom-up capture, we compared performance of participants that scored high or low on the Fear of Spiders Questionnaire (Szymanski & O'Donohue, 1995). Results showed that both types of task-irrelevant animals captured covert attention. Importantly, both types of animals produced larger interference in high-fear than in low-fear participants. This study suggests that fear as an individual characteristic influences bottom-up capture. [less ▲]

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See detailEarly land plant evolution: a tremendous success story.
Gerrienne, Philippe ULg

Conference (2009)

Detailed reference viewed: 6 (0 ULg)
See detailDevelopment of a quantitative method to detect trace amounts of hazelnut and soy allergens in food
Dobson, Rowan ULg; Fourdrilis, Séverine; Kirsch, Stéphanie ULg et al

Conference (2009)

Detailed reference viewed: 20 (3 ULg)
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See detailErythromycin time-kill activity on activated sludge
Louvet, Jean-Noël ULg; Heliun, Yannick; Potier, Olivier et al

Conference (2009)

Detailed reference viewed: 11 (2 ULg)
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See detaile-Demos, We'll Show You What We've Got !"
Lecomte, Béatrice ULg

Conference (2009)

Detailed reference viewed: 39 (17 ULg)
See detailLe Dévonien: des mousses à l'arbre.
Gerrienne, Philippe ULg

Conference (2009)

Detailed reference viewed: 3 (0 ULg)
See detailESCWA’s Social guide for Urban Observatories – presentation and discussion
Farah, Jihad ULg

Conference (2009)

In this paper we will make a brief presentation of ESCWA’s Social Guide for Urban Observatories (SGUO), then we will provide a commented example of application of its indicators’ framework. We will try to ... [more ▼]

In this paper we will make a brief presentation of ESCWA’s Social Guide for Urban Observatories (SGUO), then we will provide a commented example of application of its indicators’ framework. We will try to identify the essential determinants leading to the development of urban fragmentation. The SGUO indicators’ framework is a problem-based one. It aims to identify the determining conditions leading to the development of an urban “problem” and its impact on sustainable urban development. The author thinks of the SGUO indicators’ framework methodology as a building site in progress. On one hand, there’s still need to develop some of its theoretical framework components, mainly the concept of determinants. On the other, it should be revisited, in a participatory way. A primary application in a set of different urban observatories in the ESCWA region is needed in order to adapt it to the specificities of the region’s urban problems and local conceptions of sustainable development. [less ▲]

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See detailL'agriculture familiale africaine au coeur des Objectifs du Millénaire pour le Développement (OMD)
Berti, Fabio ULg; Lebailly, Philippe ULg

Conference (2009)

L’agriculture familiale africaine est concernée directement par l’Objectif 1 du Millénaire pour le Développement, de réduire de moitié d’ici 2015 l’extrême pauvreté et la faim. En effet, selon la plupart ... [more ▼]

L’agriculture familiale africaine est concernée directement par l’Objectif 1 du Millénaire pour le Développement, de réduire de moitié d’ici 2015 l’extrême pauvreté et la faim. En effet, selon la plupart des observateurs, 70% des pauvres sont localisés dans les zones rurales et sont agriculteurs. Dans ce contexte, il importe de s’interroger sur l’avenir des exploitations agricoles familiales en Afrique. Après avoir présenté la problématique générale de l’exploitation agricole familiale dans le développement, les auteurs présentent une analyse au départ des constats qu’ils ont pu réaliser, respectivement pour les filières de rente de la zone forestière au Cameroun et pour le coton, dans plusieurs pays d’Afrique de l’Ouest. Les analyses sont réalisées à partir des observations effectuées au départ de différentes études financées essentiellement par la Commission européenne au cours de ces dernières années. Il en résulte que le terme « agriculture familiale » recouvre des réalités très différentes avec une différenciation de plus en plus poussée des exploitations agricoles. Dans le même temps, il subsiste de nombreuses exploitations familiales plus « traditionnelles » mêlant des logiques d’autoconsommation et de marché avec des dotations en facteurs plus inégales et donc plus vulnérables. L’enjeu primordial des politiques agricoles qui seront définies sera précisément de prendre en considération la dimension spécifique de ce type d’exploitation, cible prioritaire dans la lutte contre la pauvreté. L’orientation des politiques mises en œuvre autour du seul objectif de la production de biens agricoles ne permettra pas de réduire les disparités internes et souvent croissantes observées. Il convient donc d’intégrer les dimensions sociales et environnementales dans les objectifs des politiques agricoles à mettre en œuvre. [less ▲]

Detailed reference viewed: 115 (23 ULg)
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See detailMeasuring home-range quality in the frugivorous gibbon (Hylobates lar)
Hambuckers, Alain ULg; Huynen, Marie-Claude ULg; Savini, Tommaso

Conference (2009)

Detailed reference viewed: 43 (11 ULg)
Peer Reviewed
See detailLa vente de gré à gré
Kohl, Benoît ULg

Conference (2009)

Detailed reference viewed: 5 (0 ULg)
Peer Reviewed
See detailElectrical resistivyt tomography as tool to image preferential flow pathways in soils
Kasteel, Roy; Garré, Sarah ULg; Koestel, Johannes et al

Conference (2009)

Detailed reference viewed: 11 (2 ULg)
Peer Reviewed
See detailUltrahigh resolution laser spectroscopy and isotope shifts for iron atoms
Krins, Stéphanie ULg; Oppel, S.; Huet, Nicolas ULg et al

Conference (2009)

Detailed reference viewed: 25 (5 ULg)
Peer Reviewed
See detailIRF3 is required for induction of allergic airway inflammation by dendritic cells
Marichal, Thomas ULg; Bedoret, Denis; Goriely, M. et al

Conference (2009)

Detailed reference viewed: 46 (11 ULg)
See detailIono slab monitoring service
Stankov, Stanimir; Warnant, René ULg; Stegen, Koen

Conference (2009)

Detailed reference viewed: 9 (0 ULg)
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See detailGlucosinolates and their measurement
Wathelet, Jean-Paul ULg

Conference (2009)

Detailed reference viewed: 16 (4 ULg)
See detailA web interface for griding arbitrarily distributed in situ data based on Data-Interpolating Variational Analysis (Diva)
Barth, Alexander ULg; Alvera Azcarate, Aïda ULg; Troupin, Charles ULg et al

Conference (2009)

Spatial interpolation of observations on a regular grid is a common task in many ceanographic disciplines (and geosciences in general). It is often used to create climatological maps for physical ... [more ▼]

Spatial interpolation of observations on a regular grid is a common task in many ceanographic disciplines (and geosciences in general). It is often used to create climatological maps for physical, biological or chemical parameters representing e.g. monthly or seasonally averaged fields. Since instantaneous observations can not be directly related to a field representing an average, simple spatial interpolation of observations is in general not acceptable. Diva (Data-Interpolating Variational Analysis) is an analysis tool which takes the error in the observations and the typical spatial scale of the underlying field into account. Barriers due to the coastline and the topography in general and also currents estimates (if available) are used to propagate the information of a given observation spatially. Diva is a command-line driven application written in Fortran and Shell Scripts. The observations and parameters are specified by the user using text files. The analyzed field and the expected error variance are returned as NetCDF files. This form of interaction with Diva is very similar to other high-performance codes and is a familiar approach for ocean modelers. However it represents a steep learning curve for oceanographers from other disciplines not familiar with command-line applications and programming. To make Diva easier to use, a web interface has been developed (http://gher-diva.phys.ulg.ac.be). Installation and compilation of Diva is therefore not required. The user can directly upload his/her data in ASCII format and enter several parameters for the analysis. The analyzed field, location of the observations, and the error mask are presented as different layers using the Web Map Service protocol. They are visualized in the browser using the Javascript library OpenLayers allowing the user to interact with layers (for example zooming and panning). Finally, the results can be downloaded as a NetCDF file, Matlab file (also readable in Octave, an open source program similar to Matlab) and Keyhole Markup Language (KML) file for visualisation in applications such as Google Earth. [less ▲]

Detailed reference viewed: 60 (7 ULg)
See detailInfluences de l'environnement sur la fonction endocrinienne
Charlier, Corinne ULg

Conference (2009)

Detailed reference viewed: 8 (4 ULg)
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See detailThe role of the specific immune response on cecal colonization of slow-growing broiler chickens reared on litter contaminated by Campylobacter jejuni
Vandeplas, Sabrina ULg; Dubois Dauphin, Robin ULg; Beckers, Yves ULg et al

Conference (2009)

The aim of this experiment was to study the relation between the specific immune response and infection of slow-growing broiler chickens reared on straw litter contaminated by Campylobacter jejuni. The 11 ... [more ▼]

The aim of this experiment was to study the relation between the specific immune response and infection of slow-growing broiler chickens reared on straw litter contaminated by Campylobacter jejuni. The 11-weeks experiment was carried out in a 45 m2 broiler house with 500 chickens from 1 day of age, which had access to an open-air range. Litter contamination was performed before the setting up of the chicks by rearing campylobacter-positive cocks. These birds were also used to contaminate the open-air range during one week before the exit of the chickens, at 5 weeks of age. Blood samples were taken weekly on 20 chickens for anti-campylobacter IgG quantitative measurements on serum. Chickens were then euthanized and cecal contents and bile were collected for Campylobacter enumeration and anti-campylobacter IgA quantification, respectively. A high serum anti-campylobacter IgG titer of 110.13 was measured in one-day-old chicks. The IgG antibodies level significantly decreased to 5.60 at 28 days of age which coincided with the onset of Campylobacter infection in the flock. A significant reduction of the cecal colonization from 11 weeks of age was correlated with the increase in biliary IgA titers. These results suggest that the 2-3 week’s delay generally observed in poultry production before flock infection by Campylobacter may be, at least partly, explained by the protective effect of maternal antibodies. The increase of secretory immune response as bird age may help to limit Campylobacter population in the chicken gut. [less ▲]

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See detailNonribosomal peptides producing strains isolated from Bikalga and Soumbala fermented condiments of Burkina Faso
Savadogo, Aly; Chollet, Marlène; Tapi, Arthur et al

Conference (2009)

Detailed reference viewed: 5 (2 ULg)
Peer Reviewed
See detailEvolution of Saturn's Bright Polar Aurora
Stallard, T.; Grodent, Denis ULg; Badman, S. V. et al

Conference (2009)

Observations of Saturn's infrared aurorae have shown that in addition to the main auroral oval, which is believed to be associated with the solar wind, there are significant polar emissions. Ground-based ... [more ▼]

Observations of Saturn's infrared aurorae have shown that in addition to the main auroral oval, which is believed to be associated with the solar wind, there are significant polar emissions. Ground-based infrared observations of Saturn have been able to show that there is a general level of raised emission across the entire polar region, in a similar way to that seen at Jupiter. However, with direct observations of the aurora made from orbit around Saturn by the Cassini-VIMS instrument, this aurora was shown to be more than a relative generalised brightening in the infrared. Instead, a unique auroral feature was observed to occur, appearing as a large region of bright polar emission, positioned poleward of 82 degrees latitude. This Bright Polar Aurora emission is significantly different from the recently observed subrotating Q-branch auroral emission seen in both the ultraviolet and infrared, as it is separated from the main auroral oval by a region of low emission. This effectively produces a cap of bright aurora inside the main auroral oval, surrounded by a dark ring that separates the two aurorae. Here, we take a more detailed look at this cap of emission and examine the way the auroral feature develops with time. Bright Polar Aurora emission has been observed in two separate VIMS images. A more detailed analysis of the polar emission shows that each of these images in fact differs in structure; the first has auroral emission across the whole polar cap >82 degrees, but within the second the emission is concentrated on the dusk side. While the dramatic in-filling of the polar cap is not seen within any UV observations, the Hubble Space Telescope has observed transitory duskward auroral features within the polar cap, in a similar location to the duskward feature seen in the infrared. Using ground-based infrared observations, which allow a Bright Polar Aurora event to be broken into shorter timescale steps, it is possible analyse the progression of the infrared auroral emission with time, connecting the morphology seen within the two VIMS images with those in the ultraviolet. [less ▲]

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See detailHet leerdercorpus Nederlands in theorie en in de praktijk
Perrez, Julien ULg; Degand, Liesbeth

Conference (2009)

Detailed reference viewed: 26 (0 ULg)
See detailEffects of embryo thermal conditioning on thermotolerance, parameters of meat quality and muscle energy metabolism in a heavy line of chicken
Bedrani, L.; Berri, C.; Grasteau, S. et al

Conference (2009)

Detailed reference viewed: 13 (0 ULg)
See detailUncertainty of carbon dioxide fluxes introduced by different high-pass filtering methods
Ibrom, Andreas; Geißler, Simon; Laffineur, Quentin ULg et al

Conference (2009)

Detailed reference viewed: 14 (5 ULg)
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See detailFonctions attentionnelles et exécutives dans la dyspraxie développementale
Lejeune, Caroline ULg; Catale, Corinne ULg; Meulemans, Thierry ULg

Conference (2009)

La dyspraxie développementale se manifeste principalement par des difficultés motrices qui interfèrent avec différentes situations de la vie quotidienne (écriture, dessin, habillage, …). Ces troubles du ... [more ▼]

La dyspraxie développementale se manifeste principalement par des difficultés motrices qui interfèrent avec différentes situations de la vie quotidienne (écriture, dessin, habillage, …). Ces troubles du geste, qui touchent environ 6 % des enfants de 5 à 11 ans, entraînent de lourdes conséquences sur les plans familial, scolaire et social. Plusieurs études ont montré qu’un déficit des capacités d’inhibition, de planification et de mémoire de travail était fréquemment observé chez les enfants souffrant de dyspraxie. Toutefois, en raison des nombreux problèmes méthodologiques rencontrés dans ces recherches (et plus particulièrement liés à l’absence de contrôle de la présence ou non du trouble de l’attention avec/sans hyperactivité – TDA/H - chez la population d’enfants dyspraxiques), les relations entre les troubles attentionnels et les troubles moteurs restent encore à l’heure actuelle mal comprises. L’objectif de cette étude vise à dégager, au travers d’une évaluation du fonctionnement attentionnel et exécutif, le profil neuropsychologique d’enfants diagnostiqués dyspraxiques, et ce en contrôlant la présence d’un TDA/H. Nous avons administré à 23 enfants dyspraxiques âgés de 6 à 12 ans et 23 enfants de contrôle (appariés sur base de l’âge, du sexe et du niveau d’études des parents) des tâches attentionnelles (alerte, attention sélective et divisée) de la batterie TEA et des épreuves exécutives (inhibition [Stroop et Go/No Go], flexibilité cognitive [TEA], mémoire de travail [BTT et mise à jour de TEA] et planification [Tour de Londres]). Les analyses de comparaison de moyennes indiquent que les enfants dyspraxiques présentent des performances inférieures à celles des enfants de contrôle pour l’essentiel des tests neuropsychologiques administrés. Toutefois, deux tiers des enfants dyspraxiques de notre échantillon présentent un trouble de l’attention (critères du DSM-IV). L’analyse des résultats au sein du groupe « dyspraxique sans TDA », permet de montrer que les difficultés de planification, d’attention sélective visuelle, d’inhibition motrice, de mémoire à court terme (BTT et mise à jour) sont spécifiques à la dyspraxie et donc indépendant de la présence d’un trouble de l’attention. En conclusion, cette étude préliminaire montre qu’une grande proportion d’enfants qui présentent une dyspraxie souffre également d’un trouble de l’attention. L’analyse du profil des enfants dyspraxiques montre des difficultés qui touchent l’ensemble des fonctions attentionnelles et exécutives. Toutefois, les difficultés d’analyse visuelle, de planification et de mémoire de travail semblent, quant à elles, spécifiques à la dyspraxie développementale. Des études futures réalisées sur un plus grand nombre de participants permettraient de confirmer cette hypothèse. [less ▲]

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See detailOn the use of posture verbs by French-speaking learners of Dutch : a corpus-based study.
Lemmens, Maarten; Perrez, Julien ULg

Conference (2009)

Detailed reference viewed: 4 (0 ULg)
See detailInstrument BelRAI : Introduction générale et démonstration online
Tancredi, A; Degey, S; Gosset, Christiane ULg

Conference (2009)

Detailed reference viewed: 5 (0 ULg)
Peer Reviewed
See detailContrastieve onderzoeksmodellen onder de loep
Rasier, Laurent ULg; Hiligsmann, Philippe

Conference (2009)

Detailed reference viewed: 23 (1 ULg)
See detailPerturbations endocriniennes liées aux polluants environnementaux
Charlier, Corinne ULg

Conference (2009)

Detailed reference viewed: 36 (10 ULg)
See detailL'intégration sociale des immigrés en Espagne
Brey, Elisa ULg

Conference (2009)

Detailed reference viewed: 11 (3 ULg)
See detailIdentification, cartographie et gestion des Forêts à Haute Valeur de Conservation : cas de la concession Pallisco, Cameroun
Julve Larrubia, C.; Sépulchre, F.; Philippart, Julien ULg et al

Conference (2009)

Detailed reference viewed: 48 (11 ULg)
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See detailA One-Field Discontinuous Galerkin Formulation of Non-Linear Kirchhoff-Love Shells
Noels, Ludovic ULg

Conference (2009)

Spatially-discontinuous Galerkin methods constitute a generalization of weak formulations, which allow for discontinuities of the problem unknowns in its domain interior. This is particularly appealing ... [more ▼]

Spatially-discontinuous Galerkin methods constitute a generalization of weak formulations, which allow for discontinuities of the problem unknowns in its domain interior. This is particularly appealing for problems involving high-order derivatives, since discontinuous Galerkin (DG) methods can also be seen as a means of enforcing higher-order continuity requirements. Recently, DG formulations of linear and non-linear Kirchhoff-Love shell theories have been proposed. This new one-field formulations take advantage of the weak enforcement in such a way that the displacements are the only discrete unknowns, while the C1 continuity is enforced weakly. The resulting one field formulation is a simple and efficient method to model thin structures and can be applied to various computational methods. [less ▲]

Detailed reference viewed: 53 (9 ULg)
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See detailQuantum Entanglement Antibunching and Saturation of Atoms in Dipole Blockade
Gillet, Jérémie ULg; Agarwal, G. S.; Bastin, Thierry ULg

Conference (2009)

Detailed reference viewed: 6 (2 ULg)
See detailTransformation identitaires en cours de formation initiale des enseignants: axes d'une grille de réflexivité sur le métier
Dejean, Karine ULg

Conference (2009)

Cette communication porte sur l’analyse des transformations identitaires exprimées dans les discours des enseignants en formation initiale. Cette analyse nous a permis de dégager des axes de ... [more ▼]

Cette communication porte sur l’analyse des transformations identitaires exprimées dans les discours des enseignants en formation initiale. Cette analyse nous a permis de dégager des axes de transformation qui pourront servir d’outils dans le cadre de séances de réflexivité collective et individuelle avec les futurs enseignants en leur offrant des éléments d’intelligibilité pour les aider à se situer par rapport à leur propre parcours de développement et par rapport aux différentes attentes institutionnelles à leur égard. [less ▲]

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See detailExploring the L1-L2 relationship in the L2 acquisition of prosody
Rasier, Laurent ULg; Hiligsmann, Philippe

Conference (2009)

Detailed reference viewed: 58 (1 ULg)
See detailLocal ionospheric activity – nowcast and forecast services
Stankov, Stanimir; Warnant, René ULg; Stegen, Koen et al

Conference (2009)

Detailed reference viewed: 16 (0 ULg)
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See detailAchromatization of solar concentrator thanks to diffractive optics
Languy, Fabian ULg; Lenaerts, Cedric ULg; Loicq, Jerôme ULg et al

Conference (2009)

Refractive solar concentrators suffer from important chromatic aberration. To enhance solar cell performance and increase the concentrating ratio, we propose an hybrid (diffractive/refractive) lens which ... [more ▼]

Refractive solar concentrators suffer from important chromatic aberration. To enhance solar cell performance and increase the concentrating ratio, we propose an hybrid (diffractive/refractive) lens which allows a more uniform flux density and an achromatized (in the sense of achromatic doublet) illumination of the cell. To solve the problem of high diffraction efficiency, we turn to multilayer diffractive lenses to have broadband high diffraction efficiency optimized on solar spectrum. Rigorous coupled wave analysis simulations were performed in order to check the validity of scalar theory, they led to a new order of magnitude for the ratio period/wavelength which has been found to be around 100 in place of 10. [less ▲]

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See detailDoes music education facilitate the perception of prosodic prominence in a foreign language?
Rasier, Laurent ULg; Degrave, Pauline; Hiligsmann, Philippe

Conference (2009)

Detailed reference viewed: 10 (0 ULg)
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See detailAgroecology and the emergence of "Publics"
Stassart, Pierre M ULg

Conference (2009)

Detailed reference viewed: 17 (1 ULg)
See detailReconstruction of missing data in satellite data sets using DINEOF with constraints to reduce spurious high-frequency variations in the temporal EOFs
Alvera Azcarate, Aïda ULg; Barth, Alexander ULg; Sirjacobs, Damien ULg et al

Conference (2009)

DINEOF (Data Interpolating Empirical Orthogonal Functions) is a method to reconstruct missing data in geophysical data sets, such as gaps originated by the presence of clouds in infrared satellite sensors ... [more ▼]

DINEOF (Data Interpolating Empirical Orthogonal Functions) is a method to reconstruct missing data in geophysical data sets, such as gaps originated by the presence of clouds in infrared satellite sensors. Based on Empirical Orthogonal Functions (EOFs), DINEOF uses an iterative procedure to calculate the missing values. DINEOF has been compared to Optimal Interpolation, showing that more accurate results are achieved, with up to 30 times less computational time (tests made with sea surface temperature of the Adriatic Sea, and validated with in situ data). Another advantage of this technology is that there is no need for a priori knowledge of the reconstructed data set statistics (such as covariance or correlation length). The technique can be applied to a broad range of data (physical, biological, chemical), and to a variety of platforms (satellite data, in situ data...). Given the nature of the EOFs, it is not necessary that data sets are regularly distributed in time. Irregularly distributed data sets, however, may lead to discontinuities in the temporal EOFs calculated from them, and these discontinuities can affect in turn the quality of the DINEOF reconstruction. In satellite data, some images can present a large amount of cloud cover, and only a few pixels with valid data. EOF projection to such images can also lead to discontinuities in the temporal modes, as there might be an over-fitting to the scarce information present in those images. After briefly describe DINEOF and its applications, we present a study aiming to reduce these discontinuities by including a time constraint to the covariance matrix used in the EOF decomposition. The approach is tested with sea surface temperature data of the Black Sea, and the results are compared to independent data. [less ▲]

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See detailOnline assessment of the quality of care in elderly (Belgium)
Tancredi, A; Renard, Florence ULg; Degey, S et al

Conference (2009)

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See detailTerritorial reconversion and territorial knowledge: added-value of a territorial intelligence process in Flémalle (Belgium)
Breuer, Christophe ULg; Devillet, Guénaël ULg; Merenne-Schoumaker, Bernadette ULg

Conference (2009)

Our communication aims at spreading the participative approach implemented in Flémalle (“new governorship”), but also at discussing the contribution of the theorical and applied research undertaken within ... [more ▼]

Our communication aims at spreading the participative approach implemented in Flémalle (“new governorship”), but also at discussing the contribution of the theorical and applied research undertaken within the framework of the coordination action of the European Network of Territorial Intelligence for local projects (NTIC, participation, animation, analyzes….), the objective is to measure its added-value and transposability within territories of industrial tradition in a context of financial and temporal limitations. [less ▲]

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See detailA coupled two-scale computational approach for quasi-brittle out-of-plane structural failure
Mercatoris, Benoît ULg; Massart, Thierry J.

Conference (2009)

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See detailQuantum State Construction of Matter Qubits via Projective Measurements
von Zanthier, J.; Maser, A.; Schilling, U. et al

Conference (2009)

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See detailDevelopment of an active H maser: first results
Mandache, Cipriana ULg; Léonard, D.; Bastin, Thierry ULg

Conference (2009)

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See detailModelling error of a hydrodynamic model of the Mediterranean Sea
Vandenbulcke, Luc ULg; Rixen, M.; Beckers, Jean-Marie ULg et al

Conference (2009)

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See detailDust exposure exacerbates the expression of ptx3, a recently discovered acute phase protein, in horses’ airways
Ramery, Eve ULg; Bureau, Fabrice ULg; Lekeux, Pierre ULg

Conference (2009)

Heaves is a common cause of recurrent airway obstruction (R.A.O) that occurs in mature horses stabled in a dusty environment. The long pentraxin PTX3 play an important role in the host defence and over ... [more ▼]

Heaves is a common cause of recurrent airway obstruction (R.A.O) that occurs in mature horses stabled in a dusty environment. The long pentraxin PTX3 play an important role in the host defence and over-expression of PTX3 may contribute to airways injury. Therefore, we hypothesised that PTX3 may have relevance in the understanding of the pathogenesis of recurrent airway obstruction (R.A.O). In the present study, we first investigated the equine PTX3 (ePTX3) structure by cloning, sequencing and western-blotting. A 120pb deletion was found in the second exon of ePTX3 in comparison to human PTX3. Moreover, an alternative splicing occurs with complete deletion of the second exon, resulting in two forms of the protein, “spliced” (32 kD) and “full length” (42 kD). The pentraxin domain is very well conserved in the two forms with 94% of amino-acids conserved between equines and humans. These findings could have implications for the comprehension of the function of each domain of the protein. Then, we studied the effects of dust exposure and subsequent R.A.O crisis on ePTX3 expression in the broncho-alveolar lavage fluid (BALF) and the bronchial epithelial cells. PTX3 could be detected in BALF macrophages, neutrophils, eosinophils and bronchial epithelial cells. It was over-expressed in the BALF supernatant from RAO-affected horses in crisis. Dust exposure induced PTX3 in BALF macrophages either in healthy horses or in R.A.O-affected horses. Conversely, PTX3 was strongly over-expressed in the bronchial epithelial cells from R.A.O-affected horses in crisis. Considering epithelial cells as one of the major cell types in the airways, PTX3 produced at this level may play an important role in inflammatory process. Moreover, it suggests that dust-induced expression of PTX3 is differentially regulated in macrophages and bronchial-epithelial cells. A JNK-dependant, NFκB-independent regulatory pathway has been described in lung epithelial cells. A comparable mechanism could be involved in bronchial epithelial cells. If this is confirmed, PTX3 expression in respiratory epithelial cells could be therapeutically targeted. [less ▲]

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See detailIntentional patina of metal archaeological artefacts; a non-destructive investigation of Egyptian and Roman museum treasures
Mathis, François ULg; Aucouturier, Marc; Robcis, Dominique et al

Conference (2009)

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See detailThe beta Cephei star HD180642: Seismic modelling
Thoul, Anne ULg

Conference (2009)

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See detailSearching for traces of life in ancient stromatolites down to the nanoscale.
Lepot, Kevin ULg; Philippot, Pascal; Benzerara, Karim et al

Conference (2009)

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See detailGeneration of Long-lived Entanglement on Demand in Remote Qubits
Schilling, U.; Thiel, C.; Bastin, Thierry ULg et al

Conference (2009)

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See detailCarbon cycling in the mixolimnion of Lake Kivu (East Africa)
Borges, Alberto ULg; Descy, J.-P.; Delille, Bruno ULg et al

Conference (2009)

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See detailAcidity in Ionic liquids: from the determination of an acidity scale to the application in catalytic reactions
Olivier-Bourbigou, Hélène; Gilbert, Bernard ULg; Magna, Lionel et al

Conference (2009)

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See detailDiversité et limites de la vie
Wilmotte, Annick ULg; Javaux, Emmanuelle ULg

Conference (2009)

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See detailResemantisation in varieties of Dutch
De Vos, Lien ULg

Conference (2009)

Detailed reference viewed: 22 (1 ULg)