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See detailDynamic Analysis Used to Cope with Partial and Temporary Failures
Franssen, Jean-Marc ULiege; Gens, Frederic

in Franssen, Jean-Marc; Benichou, Nouredine; Kodur, Venkatesh (Eds.) et al Proceedings of SiF'04: Third International Structures in Fire workshop (2004)

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See detailDevelopment of a hydrogel containing GM-CSF to improve the dendritic cells colonisation of HPV+ epithelium
Evrard, Brigitte ULiege; Hubert, Pascale ULiege; Delvenne, Philippe ULiege et al

in Proceedings of Eur conference on drug delivery and pharmaceutical technology (2004)

Detailed reference viewed: 19 (1 ULiège)
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See detailA new high-order high-frequency integral equation method for the solution of scattering problems. II. Multiple scattering configurations
Bruno, O.; Geuzaine, Christophe ULiege; Reitich, F.

in Proceedings of the 20th Annual Review of Progress in Applied Computational Electromagnetics, ACES 2004 (2004)

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See detailDietary aspects of ruminal acidosis
Nguyen, Patrick; Dumon, Henri; Siliart, Brigitte et al

in Proceedings of the ACVIM Forum 2004 (2004)

Detailed reference viewed: 19 (8 ULiège)
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See detailA new high-order high-frequency integral equation method for the solution of scattering problems. I. Single scattering configurations
Bruno, O.; Geuzaine, Christophe ULiege; Reitich, F.

in Proceedings of the 20th Annual Review of Progress in Applied Computational Electromagnetics, ACES 2004 (2004)

Detailed reference viewed: 18 (1 ULiège)
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See detailComment former les usagers ? Réflexions à partir de la diversité des expériences de formation organisées en Belgique
Pochet, Bernard ULiege

in Chevillotte, Sylvie (Ed.) Formation à la maîtrise de l'information à l'heure de l'harmonisation européenne : problématiques et perspectives. Actes des rencontres (2004)

Is there specific educational curriculum to information literacy? Which training for our teachers and information professionals? Proving interest of Infomration literacy programs for our students? How to ... [more ▼]

Is there specific educational curriculum to information literacy? Which training for our teachers and information professionals? Proving interest of Infomration literacy programs for our students? How to create a critical attitude in information retrieval? So many questions and others animate the EduDOC group's and led us to observe in detail the IL training activities organized in Belgium. This communication is not intended to answer these questions but rather to generate more questions [less ▲]

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See detailThe evolution of inorganic chlorine above the Jungfraujoch station: an update.
Mahieu, Emmanuel ULiege; Duchatelet, Pierre ULiege; Zander, Rodolphe ULiege et al

in Zerefos, C. S. (Ed.) Proceedings of the 20th Quadrennial Ozone Symposium (2004)

Within the frame of the NDSC, the total vertical column abundances of HCl and ClONO2, by far the two most important inorganic chlorine reservoirs at northern mid-latitudes, have been further monitored ... [more ▼]

Within the frame of the NDSC, the total vertical column abundances of HCl and ClONO2, by far the two most important inorganic chlorine reservoirs at northern mid-latitudes, have been further monitored above the Jungfraujoch station (Swiss Alps, 46.5ºN, 8.0ºE, 3580m a.s.l.), by analyzing infrared solar absorption spectra recorded with very high-resolution Fourier spectrometers. The mean temporal evolution of the sum of their monthly mean abundance time series indicates that the total stratospheric inorganic chlorine loading (Cly) has decreased slowly (-0.7+/-0.3%/yr, 1-sigma) since it peaked in late 1996, at the limit of being statistically significant at the 2-sigma level. Comparison with model calculations and with the evolution of surface total organic chlorine will also be discussed. [less ▲]

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See detailLes compétences à la recherche d’équité
Jadoulle, Jean-Louis ULiege; Letor, Caroline; Vandenbergh, Vincent

in M. FRENAY & C. MAROY (Ed.) L’école, six ans après le décret « Missions », (2004)

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See detailDéveloppement d'un système de traçabilité génétique chez le porc basé sur le séquençage de régions riches en SNP
China, Bernard; Clinquart, Antoine ULiege; Daube, Georges ULiege

in 36èmes Journées de la Recherche Porcine (2004)

Traceability is a major concern in food industry. Genetic markers such as single nucleotide polymorphisms (SNPs) can be used in the genetic traceability context. Two loci rich in SNPs were sequenced in 96 ... [more ▼]

Traceability is a major concern in food industry. Genetic markers such as single nucleotide polymorphisms (SNPs) can be used in the genetic traceability context. Two loci rich in SNPs were sequenced in 96 different individuals. Thirty-two significant SNPs were observed. All tested individuals presented a different genotype. In order to simplify the procedure, a hybrid amplicon joining the two regions of interest was generated. A traceability experiment based on this strategy was successfully performed allowing to identify the right couple « ear-meat ». [less ▲]

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See detailCharacterisation of thermophysical properties of semi-solid steels for thixoforming
Lecomte-Beckers, Jacqueline ULiege; Rassili, Ahmed ULiege; Carton, Marc ULiege et al

in Proceedings of the 8th International Conference on Semi-Solid Processing of Alloys and Composites (S2P) (2004)

Major challenge for semi-solid processing includes broadening the range of alloys that can be successfully thixoformed and developing alloys specifically for thixoforming. One important parameter is ... [more ▼]

Major challenge for semi-solid processing includes broadening the range of alloys that can be successfully thixoformed and developing alloys specifically for thixoforming. One important parameter is appropriate solidus-liquidus interval. The wider the solidification interval, the wider the processing window. This study is related to the experimental determination of this critical parameter on eight different steel compositions. This parameter was obtained using Differential Scanning Calorimetry. This technique allows to obtain the solid fraction versus temperature. The paper also presents the results of thermophysical properties determination such as thermal diffusivity, heat capacity and thermal conductivity. These properties were measured from room temperature to semi-solid state in one particular steel. The thermal diffusivity was measured using the Laser Flash method and the heat capacity using a DSC calorimeter. The thermal conductivity was obtained by calculation knowing the thermal dilatation measured with a dilatometer. All these measurements were performed for temperatures up to the liquidus. These parameters are difficult to measure but they are important to determine for the conductive heating phase of a semi-solid forming (SSM) process. [less ▲]

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See detailPrédiction du gras intermusculaire du porc Piétrain par l'ultrasonographie en temps réel
Youssao, A. K. I.; Verleyen, Vincent ULiege; Michaux, Charles ULiege et al

in Viandes & Produits Carnés - Hors série "10èmes journée Sciences du Muscle et Technologies des Viandes" (2004)

Detailed reference viewed: 72 (1 ULiège)
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See detailAlbert Henry et la dialectologie
Boutier, Marie-Guy ULiege

in Guyaux, André; Wilmet, Marc (Eds.) Hommage à Albert Henry, Actes de la journée du 22 février organisée à la Sorbonne (2004)

Detailed reference viewed: 33 (1 ULiège)
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See detailSelenium enriched winter barley for fattening bulls : animal performance and plasma metabolites
Cabaraux, Jean-François ULiege; de Behr, Vanessa; Delobel, Agathe et al

in Proceedings of the British Society of Animal Science (2004)

Detailed reference viewed: 40 (3 ULiège)
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See detailDéficience du système glutathion chez le cheval de course
De Moffarts, Brieuc; Kirschvink, N.; Art, Tatiana ULiege et al

in 30ème Journée de la Recherche Equine, Les Haras Nationaux (2004)

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See detailMineralogical characteristics of copper flotation products from Cayeli mine, Turkey and their influence to mineral processing
Strashimirov, S.; Dobrev, S.; Stamenov, S. et al

in Annual of the University of Mining and Geology, Sofia, 47, I, 147-153 (2004)

The paper presents mineralogical characteristics and pecularities of minerals distribution in products from Cu cycle of clastic ore mineral processing in Cayeli concentrator, Turkey. Special attention has ... [more ▼]

The paper presents mineralogical characteristics and pecularities of minerals distribution in products from Cu cycle of clastic ore mineral processing in Cayeli concentrator, Turkey. Special attention has been drawn to the mineralogical pecularities of sphalerite. The study has covered 16 samples from Cu flotation feed, Cu rougher concentrate, Cu final concentrate and tailing, each sieved in 4 granulometric classes. Significant quantity of sphalerite charactarized by higher amount of Cu and Fe as isomorphic impurities or extemely fine crystals of chalcopyrite are present in the Cu concentrate. Based on the performed studies, an improvement in the processing circuit has been suggested - especially in the grinding and hydrocycloning circuits. [less ▲]

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See detailInsert'Prof : pour un dispositif de formation favorisant une insertion réussie dans la vie professionnelle
Beckers, Jacqueline ULiege; Jardon, Dorothée; Jaspar, Steve ULiege et al

in Actes du 3e congrès des chercheurs en éducation, Bruxelles, 16 mars 2004 (2004)

Detailed reference viewed: 41 (2 ULiège)
See detailFace au spectre de la pénurie, une nécessaire revalorisation objective et subjective d'une profession enseignante en quête d'elle-même
Beckers, Jacqueline ULiege; Jaspar, Steve ULiege; Mathieu, Cédric et al

in Actes du 3e congrès des chercheurs en éducation, Bruxelles, 16 mars 2004 (2004)

Detailed reference viewed: 54 (3 ULiège)
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See detailHow to manage obesity in growing giant dogs ?
Lhoest, Estelle; Jeusette, Isabelle; Claeys, Stéphanie ULiege et al

in Proceedings of the 8th ESVCN International Conference (2004)

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See detailUne langue entre soi
Servais, Christine ULiege

in Exils : théorie, histoire, figures, pratiques (2004)

Detailed reference viewed: 29 (6 ULiège)
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See detailLe projet de plate-forme électronique de construction et de gestion qualité de tests standardisés e-C&QCST
Gilles, Jean-Luc ULiege; Piette, Sylvie-Anne ULiege; Detroz, Pascal ULiege et al

in Arzola, S. (Ed.) World education for educational research (WAER) : XIV congreso mundial de ciencias de la educacion : educatores para una nueva cultura : summary of papers abstracts (2004)

Detailed reference viewed: 58 (14 ULiège)
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See detailShould the safety and ethical evaluation of GMOs be based on the process or on the product of the novel gene combination?
du Jardin, Patrick ULiege

in du Jardin, Patrick (Ed.) Science, Ethics & Society - 5th Congress of the European Society for Agricultural and Food Ethics (2004)

Detailed reference viewed: 18 (6 ULiège)
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See detailOn the O(1) Solution of Multiple-Scattering Problems
Geuzaine, Christophe ULiege; Bruno, O.; Reitich, F.

in Proceedings of the 11th IEEE Conference on Electromagnetic Field Computation (CEFC'2004) (2004)

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See detailLe non-lieu de l'exil dans le cinéma de Belgique francophone
Mélon, Marc-Emmanuel ULiege

in Bajomée, Danielle; Mabrour, Abdelouahed (Eds.) Exils imaginaires et exils réels dans le domaine francophone. Théorie, histoire, figures, pratiques (2004)

Detailed reference viewed: 91 (11 ULiège)
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See detailLa formation continuée des enseignants : quelle efficacité ? Quelle équité ?
Giot, Bernadette ULiege; Baesch, Valérie

in Evaluation entre équité et efficacité : actes du XVIe colloque international de l'Admée-Europe, Liège, 4-6 septembre 2004 (2004)

Detailed reference viewed: 29 (2 ULiège)
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See detailAdipocyte fatty acid-binding protein expression and mitochondrial activity as indicators of intramuscular fat content in young bulls
Barnola, I.; Hocquette, J. F.; Jurie, C. et al

in Book of Abstracts of the 55th Annual Meeting of the European Association for Animal Production (2004)

Detailed reference viewed: 17 (1 ULiège)
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See detailEffect of fertilisation with selenium on plasma selenium in Belgian Blue suckling cows and heifers: first results
Dufrasne, Isabelle ULiege; Cabaraux, Jean-François ULiege; Coenen, M. et al

in Land use systems in grassland dominated regions, Book of abstracts of 20th General Meeting of the European Grassland Federation (2004)

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See detailAnimal performance and nitrogen surplus in suckler cows pastures fertilised with mineral nitrogen fertilizer, pig slurry or cattle compost
Dufrasne, Isabelle ULiege; Cabaraux, Jean-François ULiege; Hornick, Jean-Luc ULiege et al

in Land use systems in grassland dominated regions, Book of abstracts of 20th General Meeting of the European Grassland Federation (2004)

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See detailEffet de la fertilisation avec des engrais contenant du sélénium sur le statut sélénique de bovins Blanc-Bleu Belge : résultats préliminaires
Dufrasne, Isabelle ULiege; Cabaraux, Jean-François ULiege; Coenen, M. et al

in 11èmes Rencontres autour des Recherches sur les Ruminants (2004)

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See detailInfluence of selenium enriched fertilizers on the selenium content in grass and the selenium status in a suckling herd offered selenium enriched grass, silage and barley
Dufrasne, Isabelle ULiege; Cabaraux, Jean-François ULiege; Coenen, M. et al

in Book of Abstracts of the 55th Annual Meeting of the European Association for Animal Production (2004)

Detailed reference viewed: 12 (1 ULiège)
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See detailEffect of fertilisation with selenium on plasma selenium in Belgian Blue suckling cows and heifers: first results
Dufrasne, Isabelle ULiege; Cabaraux, Jean-François ULiege; Coenen, M. et al

in Land use systems in grassland dominated regions, 20th General Meeting of the European Grassland Federation (2004)

Detailed reference viewed: 7 (3 ULiège)
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See detailSelenium enriched grass silage and winter barely for growing bulls: feedstuff composition and animal performance
de Behr, V.; Cabaraux, Jean-François ULiege; Delobel, A. et al

in Proceedings of the British Society of Animal Science (2004)

Detailed reference viewed: 20 (0 ULiège)
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See detailAnimal performance and nitrogen surplus in suckler cows pastures fertilised with mineral nitrogen fertilizer, pig slurry or cattle compost
Dufrasne, Isabelle ULiege; Cabaraux, Jean-François ULiege; Hornick, Jean-Luc ULiege et al

in Land use systems in grassland dominated regions, 20th General Meeting of the European Grassland Federation (2004)

Detailed reference viewed: 5 (1 ULiège)
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See detailC18:3n-3 content in beef meat as influenced by breed, diet and muscle location
Cuvelier, Christine ULiege; Dotreppe, Olivier ULiege; Cabaraux, Jean-François ULiege et al

in Book of absracts of the 55th Annual Meeting of the European Association for Animal Production (2004)

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See detailImpact de différents modes de présentation du sélénium dans la ration de bovins
Cabaraux, Jean-François ULiege; Hornick, Jean-Luc ULiege; Istasse, Louis ULiege et al

in 11èmes Rencontres autour des Recherches sur les Ruminants (2004)

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See detailChanges in carcass and meat composition during the finishing of Belgian Blue double-muscled cull cows
Cabaraux, Jean-François ULiege; Dufrasne, Isabelle ULiege; Istasse, Louis ULiege et al

in Book of absracts of the 55th Annual Meeting of the European Association for Animal Production (2004)

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See detailRayleigh-Marangoni-Benard instability of a Ferrofluid Layer, in a Vertical Magnetic Field
Hennenberg, M.; Weyssow, B.; Slavtchev, S. et al

in 10th International Conference on Magnetic Fluids (2004)

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See detailOn the Rayleigh-Marangoni-Benard instability of a Ferrofluid Layer, submitted to a Vertical Magnetic Field
Hennenberg, M.; Weyssow, B.; Slavtchev, S. et al

in 2nd International Marangoni Association Congress (2004)

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See detailQuelle(s) conception(s) de la motivation dans le sillage du décret Missions ? Le cas des programmes de français
Dufays, Jean-Louis; Lucchini, Silvia ULiege

in Actes du 3ème Congrès des chercheurs en éducation. (Re)trouver le plaisir d’enseigner et d’apprendre – Construire savoirs et compétences (2004)

Detailed reference viewed: 20 (0 ULiège)
See detailFamilial isolated pituitary adenomas : epidemiological, clinical and genetic studies
Ciccarelli, A.; Valdes Socin, Hernan Gonzalo ULiege; Jaffrain-Rea, M. L. et al

in 12th International Congress of Endocrinology - Abstract book (2004)

Detailed reference viewed: 21 (2 ULiège)
See detailLa réduction chirurgicale de la masse tumorale des adénomes hypophysaires améliore le contrôle médical de l'acromégalie par les analogues de la Somatostatine
Petrossians, Patrick ULiege; Borges-Martins, L.; Espinoza, C. et al

in XXIème Congrès de la Société Française d'Endocrinologie - Abstract book (2004)

Detailed reference viewed: 32 (2 ULiège)
See detailUne approche de la vraie prévalence des tumeurs hypophysaires
Beckers, Albert ULiege; Ciccarelli, A.; Daly, Adrian ULiege et al

in XXIème Congrès de la Société Française d'Endocrinologie - Abstract book (2004)

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See detailL'octréotide LP dans le traitement des ophtalmopathies basedowiennes incipiens : Evaluation prospective VS placebo
Wemeau, J. L.; Caron, P.; Rohmer, V. et al

in XXIème Congrès de la Société Française d'Endocrinologie - Abstract book (2004)

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See detailMale hypogonadism caused by insolated LH deficiency : From pathology to gene, from gene to physiology
Valdes Socin, Hernan Gonzalo ULiege; Salvi, R.; Pralong, F. et al

in 12th International Congress of Endocrinology - Abstract book (2004)

Detailed reference viewed: 21 (3 ULiège)
See detailCushing's disease : very long-term results of transsphenoidal, clinical and genetic studies
Stevenaert, Achille ULiege; Perrin, G.; Martin, Didier ULiege et al

in 12th International Congress of Endocrinology - Abstract book (2004)

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See detailApproaching the true prevalence of pituitary tumors
Beckers, Albert ULiege; Ciccarelli, A.; Daly, Adrian ULiege et al

in 12th International Congress of Endocrinology - Abstract book (2004)

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See detailA three-month course of depot octreotide in the treatment of Graves' orbitopathy : clinical results of a randomized placebo-controlled double-blind study
Wémeau, J. L.; Beckers, Albert ULiege; Caron, P. et al

in 12th International Congress of Endocrinology - Abstract book (2004)

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See detailMeteor excitation and meteoroid abundances from quantitative spectroscopy
Jenniskens, P.; Laux, C. O.; Jehin, Emmanuel ULiege

in 35th COSPAR Scientific Assembly (2004)

Meteor spectroscopy provides both quantitative data on the excitation conditions in the meteor plasma, the progressive ablation of mineral species in the meteoroid, and the meteoroid's elemental ... [more ▼]

Meteor spectroscopy provides both quantitative data on the excitation conditions in the meteor plasma, the progressive ablation of mineral species in the meteoroid, and the meteoroid's elemental abundances for selected elements. The recent NASA and USAF sponsored Leonid Multi-Instrument Aircraft Campaign provided high-resolution spectra of relatively faint meteors using a slit-less cooled CCD spectrograph. Additional observations from ground and space extended the wavelength range from 250 to 1050 nm. We have measured excitation conditions in the meteor plasma from studies of meteoric air plasma emissions (N_2, N, O, O_2) and ablated metal atom line emissions (Fe). Results were compared to laboratory calibrated air plasma emission models and LTE models of metal atom line emissions. Further insight was provided by a spectrum recorded serendipitously at the European Southern Observatory VLT telescope, which provides the first spectral information over a cross-section of a meteor trail. We also searched for emissions from CN, H, and OH that may be ablation products of organic matter and mineral water contained in the meteoroid. We will present an overview of the information gathered to date and discuss the meteoric metal atom abundances (Fe, Mg, Si, Na, Ca, Mn, Al, Ni, Ti, Sc, Cr, Co, and V) measured for representative meteoroids. [less ▲]

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See detailNEO 2003 EH_1, the Quadrantid Shower Parent
Jenniskens, P.; Lyytinen, E.; Jehin, Emmanuel ULiege et al

in 35th COSPAR Scientific Assembly (2004)

Near Earth Object 2003 EH_1, first seen by LONEOS on 2003 March 6, was identified in early December as the parent of the Quadrantid shower based on the orbit calculated from 48 days of observations ... [more ▼]

Near Earth Object 2003 EH_1, first seen by LONEOS on 2003 March 6, was identified in early December as the parent of the Quadrantid shower based on the orbit calculated from 48 days of observations following its discovery [1]. The Quadrantids is our most intense annual shower and was until now the only major shower with no parent body. The orbit matches the inclination, semi-major axis, and argument of perihelion of the Quadrantid meteoroids, but has a perihelion distance outside of Earth orbit. It was shown that frequent close encounters with Jupiter result in a rapid dispersion of perihelion distances, accounting for the current orbit of the parent body. The dispersion of orbits in the meteor shower implies a young ˜ 500 year age and the large mass in the stream suggests formation during a comet breakup. This leaves open the possibility that comet C/1490 Y1 was a sighting of the object shortly after it broke up near aphelion, but to match the perihelion time with that of the backward integrated orbit of 2003 EH_1, a better orbit solution is needed. In December and January of 2003, we recovered the object with the ESO New Technology Telescope and computed a much improved orbit. We used that new orbit to study the formation of the Quadrantid stream for various epochs of ejection. In the context of evaluating the NEO impact hazard, those meteoroids trace the orbital evolution of other possible fragments from the breakup 500 years ago that may now be on a collision course with Earth. [1] P. Jenniskens, B.G. Marsden (2003) IAU Circular 8252 - December 08, 2003 (D.W.E. Green, ed.); P. Jenniskens (2004) 2003 EH_1 is the Quadrantid shower parent comet. Astronomical Journal (in press); http://leonid.arc.nasa.gov [less ▲]

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See detailA Consistent Dissipative Time Integration Scheme for Structural Dynamics. Application to Rotordynamics.
Noels, Ludovic ULiege; Stainier, Laurent ULiege; Ponthot, Jean-Philippe ULiege

(2004)

Recently, robust implicit energy and momentum conserving algorithms have been developed in the non-linear range. In previous works, the authors extended these algorithms to hypoelasticity-based ... [more ▼]

Recently, robust implicit energy and momentum conserving algorithms have been developed in the non-linear range. In previous works, the authors extended these algorithms to hypoelasticity-based constitutive models. In this paper we introduce numerical dissipation, opening the way to more complex simulations such as blade-loss in a turbofan. [less ▲]

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See detailConsidérations théoriques et pratiques sur la portée des arrêts de la Cour d’arbitrage
Rosoux, Géraldine ULiege; Tulkens, François

in La Cour d’arbitrage, un juge comme les autres ?, Actes du colloque organisé le 28 mai 2004 par la Faculté de droit de l’Université de Liège (Service de droit constitutionnel) et la Conférence libre du Jeune Barreau de Liège (2004)

This articles questions about the effects of the decisions of the Belgian constitutional court.

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See detailAnalyse d'un dispositif innovant d'ingénierie docimologique permettant aux étudiants d'obtenir des feedbacks individualisés et diagnostiques via le web après une épreuve standardisée en amphithéâtre
Gilles, Jean-Luc ULiege

in Arzola Medina, Sergio (Ed.) XIV congreso mundial de ciencias de la educacion : educatores para una nueva cultura (2004)

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See detailUtilisation du cycle SMART de gestion qualité des évaluations standardisées dans le contexte d'une Haute Ecole: regard critique en termes de validité, fidélité, sensibilité des mesures, diagnosticité, praticabilité, équité et communicabilité
Gilles, Jean-Luc ULiege; Lovinfosse, Vinciane

in Arzola Medina, Sergio (Ed.) XIV congreso mundial de ciencias de la educacion : educatores para una nueva cultura (2004)

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See detailGérer la qualité des évaluations des acquis des grands groupes d'étudiants à l'aide d'un Système Méthodologique d'Aide à la Réalisation de Tests (SMART)
Gilles, Jean-Luc ULiege

in Arzola Medina, Sergio (Ed.) XIV congreso mundial de ciencias de la educacion : educatores para una nueva cultura (2004)

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See detailWhich metrics to assess and compare the quality of image fusion products ?
Cornet, Yves ULiege; Binard, Marc ULiege

in New Strategies for European Remote Sensing (2004)

Detailed reference viewed: 27 (4 ULiège)
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See detailS'engager dans la lecture : un investissement au service des compétences
Lafontaine, Dominique ULiege

in Actes du 3e congrès des chercheurs en éducation, Bruxelles, 16-17 mars 2004 (2004)

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See detailAn attempt to derive a DEM and Ortho-photo map from hyperspectral data in the high resolution mode (Casi/SWIR)
Devriendt, Dennis; Goossens, Rudi; De Wulf, Alain et al

in Goossens, Rudi (Ed.) Remote Sensing in Transition (2004)

Future Remote Sensing data will include hyperspectral data more and more. This study frames in the preliminary studies to investigate the possibilities of these types of data. In this framework ... [more ▼]

Future Remote Sensing data will include hyperspectral data more and more. This study frames in the preliminary studies to investigate the possibilities of these types of data. In this framework experimental flights were organised by VITO (Flemish Institute for Technological Research) and OSTC (Federal Office for Scientific, Technical and Cultural Affairs) on 13th of September 2002 with a Dornier 228 aircraft carrying the CASI/SWIR sensor, over different test sites in Belgium. The flights were done by NERC and VITO and framed in the STEREO-program of OSTC. This paper deals with the “Ghent test site” over a peri-urban area, and focuses on the 3D-geometry of these data. These hyperspectral data are characterised by relief-displacement and differences in relief. These displacements occur in a direction away from the centre of the image. For remotely sensed images this is the direction away from the flight-line. In the monoscopic analysis of such images, these displacements will disturb the interpretation, the classification and the mapping of the image information. These distortions can be compensated for with a DEM. Very often this DEM has to come from an external data source such as laser scanning or aerial photography. However, when hyperspectral data is taken stereoscopically, it is possible to derive a DEM from these stereoscopic hyperspectral images, and so avoiding the cost to purchase an external DEM. To obtain stereoscopic imagery, two images were taken with an overlap of 80% in the so called “metrical mode” i.e. with a high spatial resolution (0.5m) and a lower spectral resolution. A third image was taken in “spectral mode”, for interpretation issues. A DEM and orthophoto were generated from the hyperspectral data by means of digital photogrammetry. A number of Ground Control Points were collected for absolute orientation, by means of DGPS. The geometric precision of the DEM and orthophoto derived from these data are evaluated using DEM and orthophoto derived from aerial pictures on different scales. [less ▲]

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See detailGeneration of digital surface models and orthophotos of urban areas with IKONOS stereopairs
Devriendt, Dennis; Goossens, Rudi; Binard, Marc ULiege

(2004)

The purpose of the presented research project is to investigate how present-day EO-technology can support local and regional decision-making, particularly in Belgium, and to develop prototype versions of ... [more ▼]

The purpose of the presented research project is to investigate how present-day EO-technology can support local and regional decision-making, particularly in Belgium, and to develop prototype versions of value-added products that fulfill some of the actual information needs, as expressed by Belgian authorities at the local and at the regional level. One of the technical research modules is focussing on the geometrical aspects of VHR data processing. Due to the capability of the IKONOS sensor up to an angle of 26° off-nadir, the satellite can take stereo image pairs. An IKONOS stereo pair consists of two images of the same location taken from two different perspectives on the same orbital pass. Although it is possible to obtain a stereopair from two images from different orbital passes and with a large time interval, it is proved that the stereopairs ordered from Spaceimaging or resellers gives better results (2004, Taillieu et al.). This paper describes the method applied for DSM generation from an IKONOS stereopair, over an urban area. The geometrical accuracy of the DSM is compared with the accuracy of a DSM, derived from aerial photography at scales of 1:12000 and 1:4000. The satellite-derived DSM is used for ortho-rectification of VHR imagery. The accuracy of the ortho-rectified images is compared with ortho-rectifications of the same images, based on the aerial photo DSM. [less ▲]

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See detailExtraction of land use / landcover – related information from very high resolution data in urban and suburban areas
Van de Voorde, Tim; De Genst, William; Canters, Frank et al

in Goossens, Rudi (Ed.) Remote Sensing in Transition (2004)

Very High Resolution (VHR) satellite images offer a great potential for the extraction of landuse and land-cover related information for urban areas. The available techniques are diverse and need to be ... [more ▼]

Very High Resolution (VHR) satellite images offer a great potential for the extraction of landuse and land-cover related information for urban areas. The available techniques are diverse and need to be further examined before operational use is possible. In this paper we applied two pixel-by-pixel classification techniques and the object-oriented image analysis approach (eCognition) for a land-cover classification of a Quickbird image of a study area in the northern part of the city of Ghent (Belgium). Only small differences in overall Kappa were noted between the best results of the pixel-based approach (neural network classification with Haralick texture measures) and the object-oriented classification (eCognition). A rule-based procedure using ancillary information on elevation derived from a digital surface model was applied on the pixel-based land-cover classification in order to obtain information on the spatial distribution of buildings and artificial surfaces. [less ▲]

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See detailPrise en charge multimodale de la chirurgie abdominale majeure
Kaba, Abdourahmane ULiege; Joris, Jean ULiege

in La réhabilitation post-opératoire (2004)

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See detailSpectroscopic anatomy of a meteor with the Very Large Telescope (ESO)
Jehin, Emmanuel ULiege; Jenniskens, P.; Laux, C. O. et al

in 35th COSPAR Scientific Assembly (2004)

A meteor spectrum in the range 637 - 1050 nm was recorded serendipitously at the ESO Very Large Telescope during a long exposure in long-slit spectroscopic mode with FORS1. The meteor crossed the narrow 1 ... [more ▼]

A meteor spectrum in the range 637 - 1050 nm was recorded serendipitously at the ESO Very Large Telescope during a long exposure in long-slit spectroscopic mode with FORS1. The meteor crossed the narrow 1" x 7' slit during normal service mode operation on May 12, 2002. To our knowledge, this is the first observation of a spatially resolved spectrum across a meteor trail. The trail is wider than expected and the plasma excitation temperature varies only from about 4,300 to 4,365 K across the trail, based on the ratio of atomic and molecular nitrogen emissions. The observed width could originate from a range of fragments that have spread significantly at the time of the observation. Finally, carbon atom emission is not detected in the relatively unexplored range above 900 nm. [less ▲]

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See detailWhat Has Private International Private Law Achieved in Meeting the Challenges Posed by Globalisation?
Wautelet, Patrick ULiege

in Slot, Piet-Jan (Ed.) Globalization and Jurisdiction (2004)

The issue of jurisdiction certainly constitutes one of the main challenges of what is commonly called globalisation, i.e. the rapid internationalisation of economic (and, to a somewhat lesser extent, of ... [more ▼]

The issue of jurisdiction certainly constitutes one of the main challenges of what is commonly called globalisation, i.e. the rapid internationalisation of economic (and, to a somewhat lesser extent, of other) activities. Since legal regulation of these human activities is still largely state-based with the notable exception of the European Union, whose existence and the large body of rules it produces, also raises questions of jurisdiction rules on jurisdiction are necessary to define which part of these activities can be subject to regulation by a given State. This paper aims to examine what private international law has achieved to answer the question of jurisdiction. [less ▲]

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See detailAffections respiratoires bovines : évolution des lésions pulmonaires et rapidité d’intervention
Lekeux, Pierre ULiege; Coghe, J.

in Proceedings: Congrès de la Société Française de Buiatrie (2004)

Respiratory disease is the principal cause of loss of young cattle worldwide. The syndrome arises from a number of factors, including those involving the animal, e.g., age, general condition and immune ... [more ▼]

Respiratory disease is the principal cause of loss of young cattle worldwide. The syndrome arises from a number of factors, including those involving the animal, e.g., age, general condition and immune status; its environment, e.g., changes in food, temperature and humidity that lead to stress; and the presence of infectious agents, e.g., bacteria, viruses and mycoplasmas. The syndrome, in a method proposed by the author, can be classified into four grades: Grade 1, subclinical disease; Grade 2, compensated clinical disease; Grade 3, noncompensated clinical disease; and Grade 4, irreversible clinical disease. The increase in frequency and economic impact of bovine respiratory disease complex can be correlated with the escalating industrialisation of cattle production. In intensive operations, commingling of animals from multiple sources, exposure to many organisms, stress and management practices are all factors that can lead to disease. The predisposition of cattle, especially beef calves, to respiratory problems is related to their lack of functional pulmonary hardiness. Selection of breeds that demonstrate adequate pulmonary function and sufficient ventilatory reserve may help in the control of the bovine respiratory disease complex, but this approach is difficult to implement and slow to produce results. Prophylactic measures, including vaccination programmes and modifying management practices to reduce stress, also have a place in preventing the bovine respiratory disease complex. Unfortunately, these measures are not always easy to put into operation and cannot completely eradicate the problem. Therapeutic strategies to minimise the economic impact of the syndrome include use of early antibacterial therapy, modulation of the pulmonary inflammatory reaction and correction of mechanical disorders [less ▲]

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See detailEffet de l’entraînement et de l’intensité de l’exercice sur les marqueurs sanguins du stress oxydant chez le trotteur
De Moffarts, Brieuc; Kirschvink, Nathalie; Art, Tatiana ULiege et al

in Proceedings: Congrès de l'Association Vétérinaire Equine Française (AVEF) (2004)

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See detailDetermination of pregnancy-associated glycoproteins (bPAG) in cow’s milk
Metelo, R.; Silva, S.; Sulon, J. et al

in Proceedings: 23rd World Buiatrics Congress, Québec, Canada (2004)

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See detailElaboration d’une typologie hydro-géomorphologique de cours d’eau dans l’Euregio Meuse-Rhin
Hallot, Eric ULiege; Schmitt, L.; Mols, J. et al

in Mosella - XXIX, 3-4 (2004)

This paper shows the first results of a method of river hydro-geomorphological typology applied on the Euregio Maas-Rhine. This is based on non factorial multivariate analysis (clusters) of only ... [more ▼]

This paper shows the first results of a method of river hydro-geomorphological typology applied on the Euregio Maas-Rhine. This is based on non factorial multivariate analysis (clusters) of only quantitative data automatically extracted from DEM or obtained by field measurements with a simplified protocol. The regional differentiation of variables allows the automatic characterization of rivers especially with the specific stream power. [less ▲]

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See detailProposition d’une méthode de typologie hydro-géomorphologique des cours d’eau et tes sur un sous-bassin du Rhône (Bassin de l’Yzeron).
Schmitt, Laurent; Valette, L.; Valin, K. et al

in MOSELLA, XXIX (3-4) (2004)

Proposal of a method of hydro-geomorphological typology of rivers and test of a sub-basin of the Rhône River (Yzeron basin). The paper proposes a hydro-geomorphological typology method of watercourses ... [more ▼]

Proposal of a method of hydro-geomorphological typology of rivers and test of a sub-basin of the Rhône River (Yzeron basin). The paper proposes a hydro-geomorphological typology method of watercourses that might potentially be used in western Europe. The method was tested in the Yzeron basin (France). Field data were collected and analysed by multivariate statistics. Statistical results were consistent with the results of the typology model. Some recommendations are also made for the future development of automatic methods of characterization-sectorization of rivers. [less ▲]

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See detailL'assurance contre les catastrophes naturelles
Paris, Catherine ULiege

in Lecocq, Pascale (Ed.) Actualité législative en droit immobilier (2001-2003) (2004)

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See detailA generic approach for image classification based on decision tree ensembles and local sub-windows
Marée, Raphaël ULiege; Geurts, Pierre ULiege; Piater, Justus ULiege et al

in Proceedings of the 6th Asian Conference on Computer Vision (2004)

A novel and generic approach for image classification is presented. The method operates directly on pixel values and does not require feature extraction. It combines a simple local sub-window extraction ... [more ▼]

A novel and generic approach for image classification is presented. The method operates directly on pixel values and does not require feature extraction. It combines a simple local sub-window extraction technique with induction of ensembles of extremely randomized decision trees. We report results on four well known and publicly available datasets corresponding to representative applications of image classification problems: handwritten digits (MNIST), faces (ORL), 3D objects (COIL-100), and textures (OUTEX). A comparison with studies from the computer vision literature shows that our method is competitive with the state of the art, an interesting result considering its generality and conceptual simplicity. Further experiments are carried out on the COIL-100 dataset to evaluate the robustness of the learned models to rotation, scaling, or occlusion of test images. These preliminary results are very encouraging [less ▲]

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See detailTeledetección Geológica de la Región de San Pablo de Lipez - Bolivia
Caceres, Fernando; Pirard, Eric ULiege

in XVI Congreso Geologico Boliviano (2004)

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See detailImage Analysis of Iron Oxides under the Optical Microscope.
Pirard, Eric ULiege; Lebichot, Sophie

in Tassinari, L. M.; Pecchio, M.; Andrade, F. R. (Eds.) et al Applied Mineralogy: Developments in Science and Technology (2004)

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See detailDirect estimation of sieve size distributions from 2-D image analysis of sand particles
Pirard, Eric ULiege; Vergara, Nicolas; Chapeau, Vincent

in Proceedings PARTEC 2004 (2004)

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See detailMyeloperoxydase concentration in bronchoalveolar lavage from healthy and heavy horses
Art, Tatiana ULiege; Desmet, Christophe ULiege; Lekeux, Pierre ULiege et al

in Proceedings : 22nd Symposium of the Veterinary and Comparative Respiratory Society (2004)

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See detailNuclear factor kappaB inhibition in bovine mammary epithelial cells reduces intracellular infection by Staphylococcus aureus.
Boulanger, D.; Bureau, Fabrice ULiege; Lekeux, Pierre ULiege

in Proceedings : 23rd World Buiatrics Congress (2004)

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See detailActivator protein-1 activity in bronchial brushing samples from horses with recurrent airway obstruction
Couëtil, L.; Art, Tatiana ULiege; Bureau, Fabrice ULiege et al

in Proceedings of the 22nd Symposium of the Veterinary and Comparative Respiratory Society (2004)

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See detailMarket dynamics driven by the decision-making of both power producers and transmission owners
Minoia, Anna; Ernst, Damien ULiege; Ilic, Marija

in Proceedings of the IEEE Power Engineering Society General Meeting 2004 (2004)

In this paper we consider an electricity market in which not only the power producers but also the transmission owners can submit a bid. The market is cleared at each stage by minimizing the sum of the ... [more ▼]

In this paper we consider an electricity market in which not only the power producers but also the transmission owners can submit a bid. The market is cleared at each stage by minimizing the sum of the production prices and the transmission prices. A model of the strategic behavior is formulated for the different agents of the system. This strategic behavior modelling leads to a market dynamics that can be used to determine the different payoffs of the agents over a temporal horizon. Simulations are carried out for several configurations of this two node power system. The influence of the transfer capacity and the market structure on the payoffs of the different agents is discussed. [less ▲]

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See detailNash equilibria and reinforcement learning for active decision maker modelling in power markets
Krause, Thilo; Andersson, Goran; Ernst, Damien ULiege et al

in Proceedings of the 6th IAEE European Conference: Modelling in Energy Economics and Policy (2004)

In this paper, we study the behavior of power suppliers who submit their bids to the market place in order to maximize their payoffs. The market clearing mechanism is based on the locational marginal ... [more ▼]

In this paper, we study the behavior of power suppliers who submit their bids to the market place in order to maximize their payoffs. The market clearing mechanism is based on the locational marginal price. To study the interaction of the power suppliers, we rely on two different approaches and compare the results obtained. One approach consists of computing the Nash equilibria of the market, and the other models each player’s behavior by using reinforcement learning algorithms. Simulations are carried out on a five node power system. [less ▲]

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See detailSpatially distributed , physically-based modelling for simulating the impact of climate change on groundwater reserves
Brouyère, Serge ULiege; Dassargues, Alain ULiege

in Webb, B.; Arnell, N.; Onof, Ch (Eds.) et al Hydrology: science and practice for the 21st century (2004)

If an increase in winter rainfall is foreseen in temperate areas like in Belgium, a shorter recharge season is also expected leading possibly in an uncertain trend for the total recharge of the aquifers ... [more ▼]

If an increase in winter rainfall is foreseen in temperate areas like in Belgium, a shorter recharge season is also expected leading possibly in an uncertain trend for the total recharge of the aquifers. An integrated hydrological model (MOHISE) was developed in order to study the impact of climate change on the hydrological cycle in representative water basins in Belgium. This model considers all hydrological processes in a physically consistent way, more particularly groundwater flows that are modelled using a spatially distributed finite element approach. After detailed calibration and validation, quantitative interpretations can be drawn from the groundwater model results for different IPCC climate change scenarios. This integrated approach was applied to evaluate the impact of climate change on the water cycle in the Geer basin in Belgium. The river-aquifer interactions are explicitly taken into account in the model, as well as the spatial heterogeneity of the chalk geology characteristics. The groundwater model is described in detail. Modelling results are discussed in terms of climate change impact on the evolution of groundwater reserves. First results indicate that groundwater deficits may be expected in the future in Belgium. For this aquifer, the tested scenarios show no enhancement of the seasonal changes in groundwater levels. Moreover, this trend is computed, at this stage of the study, without taking into account aggravating factors like possible changes in land use and pumping conditions. [less ▲]

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See detailAggregated indicators from an optimized groundwater monitoring network: example in Walloon region of Belgium for implementation of the European Water Directive
Rentier, Céline; Delloye, Francis; Brouyère, Serge ULiege et al

in Proc. of Integrated methods for assessing water quality, COST629 Workshop (2004)

Following prescriptions of the recent European Water Framework Directive, a groundwater quality evaluation system must be adopted for checking the groundwater status with respect to different contaminants ... [more ▼]

Following prescriptions of the recent European Water Framework Directive, a groundwater quality evaluation system must be adopted for checking the groundwater status with respect to different contaminants. A screening evaluation system (based on a system developed by the French Water Agencies) has been adapted to the specific conditions in the Walloon Region of Belgium. Groundwater quality data are aggregated into indicators with respect to different water uses such as drinking water standards, thresholds values for preserving dependent surface ecosystems, or the groundwater ‘natural or patrimonial state’. A global groundwater quality indicator can also be calculated. Different aggregation techniques are discussed with their respective influence on the final indicator. In relation to this evaluation, the monitoring network must be adapted for being (as far as possible) representative of the global quality of water in each groundwater body. Existing knowledge and understanding of the actual hydrogeological conditions were used in priority for choosing an adequate network of monitoring points. At the same time, the spatial density of points was checked in order to obtain a statistically representative network. Applications were performed in five different GWBodies belonging to the hydrographic district of the Meuse River in the Walloon Region and with different contrasted geological conditions: Cretaceous chalks, Carboniferous limestones and Pleistocene gravels of the alluvial plain of the River Meuse. These examples provide a good opportunity for further discussion and work about the main related issues: optimzation procedures, aggregation methods and estimation of the reliability of indicators. [less ▲]

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See detailLa pédagogie universitaire en mouvement : une stratégie en 7 clés méthodologiques et enrichissement continu pour une mise en action de compétences et un impact pratique immédiat
Poumay, Marianne ULiege

in (Re)trouver le plaisir d'enseigner et d'apprendre. Construire savoirs et compétences. (2004)

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See detailUse of a short-acting bronchodilator prevents bronchoscopy-induced airflow limitation in cats
Kirschvink, N.; Leemans, J.; Delvaux, François ULiege et al

in 8th Annual Meeting de la Société Française de Pharmacologie - Strasbourg - France - Avril 2004 (2004)

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See detailDistribution of the forces in a bolted connection under shear loading
Pietrapertosa, C.; Piraprez, E.; Jaspart, Jean-Pierre ULiege

in Proceedings of the Fifth International Workshop on Connections (2004)

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See detailDevelopment of in vitro techniques for the elimination of Cucumber Mosaic Virus from banana (Musa spp.).
Helliot, B.; Panis, B.; Hernandez, R. et al

in Banana improvement: cellular, molecular biology, and induced mutations.Proceedings of a meeting held in Leuven, Belgium, 24-28 September 2001 (2004)

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See detailDes socles de compétences à la mise en place d'une démarche expérimentale à l'école primaire : intervention en formation initiale des enseignants
Hindryckx, Marie-Noëlle ULiege; Stegen, Pierre; Graftiau, Marie-Christine et al

in Herphelin, Martine (Ed.) Actes du troisième congrès des chercheurs en éducation : (re)trouver le plaisir d'enseigner et d 'apprendre; construire savoirs et compétences (2004)

Dans le cadre de ce projet de recherche-action, une collaboration étroite entre deux services universitaires de Liège (Service de Didactique générale , faculté de Psychopédagogie et service de Chimie ... [more ▼]

Dans le cadre de ce projet de recherche-action, une collaboration étroite entre deux services universitaires de Liège (Service de Didactique générale , faculté de Psychopédagogie et service de Chimie organique - faculté des Sciences) et la Haute École Charlemagne (Liège et Huy) s’est mise en place pendant trois ans. La question centrale qui a guidé le travail durant ces trois années est : « Comment incorporer, dans le curriculum de formation des futurs instituteurs, des mises en situation favorisant le développement de leur capacité à construire des activités d’apprentissages faisant intervenir des démarches expérimentales telles que présentées dans le document « Socles de compétences » ? ». L’objet de la collaboration entre les différents partenaires concernés a été la construction d’un outil de formation prenant place dans les ateliers de formation professionnelle (AFP) des futurs enseignants. Cet outil de formation a pris la forme d’un module qui s’est articulé sur une démarche en trois temps : • Faire vivre aux futurs enseignants une démarche de recherche expérimentale concrète, au départ d’une énigme scientifique à leur niveau ; • Prendre du recul face au vécu pour faire identifier par les stagiaires les fondements didactiques de la démarche de formation et prolonger cette réflexion métacognitive par des moments de théorisation sur les contenus visés ; • Construire ensemble des séquences de leçons mettant en place une démarche expérimentale et les tester dans des classes du primaire Ce dispositif a été testé à cinq reprises, dans des situations différentes, à la Haute École Charlemagne dans les implantations de Liège et de Huy. Un document en cinq volumes constitue le rapport final qui clôture les trois années de recherche pour l’AGERS. Il est construit comme un outil destiné aux enseignants des Hautes Ecoles (psychopédagogues et/ou professeur de sciences) ainsi qu’aux maîtres de formation pratique. [less ▲]

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See detailInverse analysis on in situ geotechnical measurement using a genetic algorithm
Malécot, Yann; Levasseur, Séverine ULiege; Boulon, Marc et al

in Pande, G. N.; Pietruszczak, S. (Eds.) Numerical Models in Geomechanics (2004)

This paper is dedicated to the identification of constitutive parameters of the Mohr-Coulomb constitutive model from in situ measurements. A general definition of an objective function is proposed. A ... [more ▼]

This paper is dedicated to the identification of constitutive parameters of the Mohr-Coulomb constitutive model from in situ measurements. A general definition of an objective function is proposed. A direct approach of inverse analysis is used to identify the shear modulus and the friction angle in four different situations. The first two examples deal with a “numerical” and with a real pressuremeter curve. A difficult convergence and a strong non unicity of solution is observed, which is classical in inverse analysis (ill posed problems). In a second stage, the horizontal displacements related to two excavation problems are used for identifying the two mechanical parameters. A clear minimum of the objective function is detected, giving a unique solution. The reasons of these differences are discussed and some ways of improving the interpretation of the pressuremeter test results are proposed. [less ▲]

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See detailBootstrap Equations for String-Like Amplitude
Semenov-Tyan-Shanskiy, Kirill ULiege

in Dubinin, M.; Savrin, V. (Eds.) High energy physics and quantum field theory. Proceedings, 18th International Workshop, QFTHEP 2004, St. Petersburg, Russia, June 17-23, 2004 (2004)

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See detailInversion of the Biot-Savart Law: an approach based on discrete sine and cosine transforms
Dirickx, Michel; Denis, Samuel ULiege; Vanderheyden, Benoît ULiege et al

in Johansen, T. H.; Shantsev, D. V. (Eds.) Magneto-Optical Imaging, Proceedings of the NATO Advanced Research Workshop, held in Øystese, Norway, 28-30 August 2003 (2004)

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See detailCritical state modelling of crossed field demagnetisation in HTS materials
Swartz, J. P.; Mc Culloch, M. D.; Pecher, R. et al

in Andreone, A.; Pepe, G. P.; Cristiano, R. (Eds.) et al Applied Superconductivity 2003 (Proceedings of the 6th European Conference on Applied Superconductivity) (2004)

Large magnetic fields can be trapped in high temperature superconductor material, enabling their use as permanent magnets in various applications. It has, however, been observed that these materials ... [more ▼]

Large magnetic fields can be trapped in high temperature superconductor material, enabling their use as permanent magnets in various applications. It has, however, been observed that these materials experience a decay in magnetisation when a field is applied in a direction transverse to the trapped field. This paper presents the results of critical state modelling of an infinite slab of superconductor that is first fully magnetised and then exposed to magnetic field in the transverse direction. The bean and double critical state model are implemented and the results compared to each other and to that of physical experiment. The convergence of the decay is investigated as well as the effect of the magnitude of the crossed field on the final decay value. Diamagnetic and paramagnetic initial conditions are applied to the material and the results used to compare the accuracy of the bean and double critical state model. [less ▲]

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See detailSystèmes de croyance Niomankas et gestion des ressources naturelles de mangroves
Cisse, T.; Ghysels, A.; Vermeulen, Cédric ULiege

in De Dapper, M. (Ed.) Tropical forests in a changing global context (2004)

Le concept de «savoirs endogènes» constitue actuellement l’un des axes majeurs de la réflexion autour de la problématique de la conservation de la biodiversité. En effet, on se rend de plus en plus compte ... [more ▼]

Le concept de «savoirs endogènes» constitue actuellement l’un des axes majeurs de la réflexion autour de la problématique de la conservation de la biodiversité. En effet, on se rend de plus en plus compte que l’activité de conservation de la diversité biologique, qui met à contribution les organisations locales, les structures étatiques et les ONG environnementales, ne peut pas seulement s’appuyer sur les connaissances scientifiques. La réflexion autour des savoirs écologiques locaux (Technical Ecological Knowledge [TEK]), et leur valorisation, apparaît comme une solution pour une gestion durable et viable des écosystèmes marins et côtiers, en particulier pour les forêts de mangrove du Siné-Saloum. Au Sénégal, l’ensemble du littoral subit depuis plusieurs décennies les effets de la désertification. Les initiatives se multiplient dans la Réserve de la Biosphère du Delta du Saloum [1]*** (RBDS) pour réhabiliter les écosystèmes côtiers. Il serait intéressant de voir quels peuvent être les apports des savoirs locaux, ceux des Niominka et Socé, dans la dynamique globale de conservation de la biodiversité écologique. Au moment où des plans de gestion de la mangrove [2] sont en train d’être conçus, il serait bon d’intégrer les savoirs écologiques endogènes dans le processus de leur conception et de mise en œuvre. En effet, dans le jeu des interactions entre communautés locales et ONG, donc intervenants extérieurs, il peut arriver que des réactions de rejet se manifestent. S’il en est ainsi, c’est parce que les ONG sont parfois porteuses d’initiatives qui ne tiennent pas compte des manières de penser, des rapports qui lient la nature aux populations autochtones, des systèmes de conception, de représentation et d’occupation de l’espace ou d’appropriation des ressources. Chez les Niominkas du Siné-Saloum, il existe des croyances et perceptions qui ont eu un impact positif sur la protection de l’environnement. Selon l’anthropologue sénégalais Massaer Diallo [3], «si ce que l’on appelle aujourd’hui “le respect de l’environnement” et la “gestion durable des ressources naturelles” a des cas équivalents dans des cultures et sociétés dites traditionnelles (régies par des logiques endogènes et anciennes), c’est parce que ces dernières étaient fondées sur une conception, des règles et valeurs qui impliquaient voire édictaient un rapport harmonieux ou équilibré avec la nature (physique, animale et végétale)». En voici quelques illustrations. La sacralisation de Jiffa, Péthiamak, chez les Sérères de Djilor, fait que ces sites — même si ce n’était pas l’objectif recherché — sont aujourd’hui les moins agressés dans la communauté rurale [4]. L’injonction du génie protecteur du Loog, Laga ndong, de ne parler que le sérère dans la zone de pêche Niamokine — dans un pays où l’écrasante majorité parle wolof — a favorisé le contrôle du bolong par les Niominkas et la limitation de l’exploitation de ses ressources aux autochtones. De plus, l’islamisation des sociétés traditionnelles sérères a introduit un rapport de type nouveau entre l’homme et la nature parce que le fait de couper un arbre ou tout simplement des feuilles d’arbres sans en avoir besoin est associé à un péché. Celui qui abuse de la ressource végétale est selon le Coran un pécheur. En planter, c’est attirer la miséricorde divine sur soi, dit-on dans le texte sacré des musulmans. Ces représentations religieuses ont donc des incidences sur l’équilibre de la nature. Les savoirs écologiques locaux présentent un intérêt bien particulier mais il faut se garder de faire de l’ethnologisme. Et puis, il y a chez les Niominka une forte croyance selon laquelle la mangrove est un don de Dieu. Par conséquent, la pérennité des ressources qu’elle génère est garantie par une divinité. Quelle est la place de ces croyances dans le processus de désintégration des forêts de mangrove dans le Siné et le Saloum? Le présent article tente de fournir des éléments d’appréciation sur la place des savoirs locaux dans la conservation de la diversité biologique chez les communautés Niominka de la RBDS. [less ▲]

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See detailLe texte dans tous ses états. Philosophie d’encodage du projet Khartês
Mazziotta, Nicolas ULiege

in Dister, Anne; Purnelle, Gérald; Fairon, Cédrick (Eds.) Le poids des mots. Actes des 7es Journées internationales d’Analyse statistique des Données Textuelles (2004)

When editing Medieval sources, one always encounters the same dilemma : how to make the text readable nowadays without spoiling its testimony ? « Cleaning » the text from all that makes it difficult to ... [more ▼]

When editing Medieval sources, one always encounters the same dilemma : how to make the text readable nowadays without spoiling its testimony ? « Cleaning » the text from all that makes it difficult to read for someone erases marks that would look valuable from another point of view. Hence, there is an unavoidable gap between the source and the edition. The Khartês project (which intends to edit and study original Old French charters written in Liège before 1300) has encountered this problem. Traditional « solutions » were inadequate and computers opened an interresting path. However, Khartês had to think about creating an encoding scheme that would suit its aim and remain easy to use. This is the way KML (the Khartês Markup Language, an XML-conformant language) was born, together with a small set of handy encoding rules. A wide range of applications are made possible. For instance, thanks to the way the corpus has been created, it has been possible to search a particular document for marked letters (which look like our uppercase letters) and to study them. [less ▲]

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See detailSuperconducting properties of magnetically textured Dy doped Bi-2212 nickel tapes
Fagnard, Jean-François ULiege; Rahier, Sébastien ULiege; Fonder, Nicole et al

in Andreone, A. (Ed.) Applied Superconductivity 2003 (Proceedings of the 6th European Conference on Applied Superconductivity) (2004)

This communication aims at reporting the superconducting properties of Dy-doped Bi-2212/NiO/Ni tapes prepared by a dip-coating process from an inorganic gel. The Bi-2212 is recrystallized at 965°C in ... [more ▼]

This communication aims at reporting the superconducting properties of Dy-doped Bi-2212/NiO/Ni tapes prepared by a dip-coating process from an inorganic gel. The Bi-2212 is recrystallized at 965°C in presence of an external 1.2 T magnetic induction. The precursor gel, the temperature and the thermal treatment duration are optimized regarding the microstructure The resulting tape samples are characterized by electrical resistance and I-V curves. The presence of secondary phases, such as Bi-2201, is reduced after a 750°C annealing but Ni diffusion limits the critical current density of the as-obtained tapes. The magnetic critical current density measured on textured Dy-doped Bi-2212 monoliths, obtained with the same type of texturation process, but showing no Ni contamination, is found to be about 30 times larger than the critical current density of the tapes. [less ▲]

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See detailLe nimbe et le jurème
Brausch, Géraldine ULiege

in Brausch, Géraldine; Delruelle, Edouard (Eds.) La droit sans la justice : Actes de la rencontre autour du 'Cap des tempêtes' de L. François (2004)

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See detailRencontres avec des agriculteurs slovènes
Schmitz, Serge ULiege

in Journal de l'Europe (2004)

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See detailLa bête qui n’existait pas. La question du réel et de sa construction dans l’étude des vertus thérapeutiques de l’interaction avec un animal »
Servais, Véronique ULiege

in Muchielli, Alex (Ed.) La place du constructivisme pour l'étude des communications (2004)

Drawing form an experimental study on the thrapeutic effect of dolphins, this paper examines how the team constructed different realities that were differently positive for the children. It is a case of ... [more ▼]

Drawing form an experimental study on the thrapeutic effect of dolphins, this paper examines how the team constructed different realities that were differently positive for the children. It is a case of rosenthal effect explained. [less ▲]

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See detailMonde sauvage et monde civilisé dans le mythe : le cas d'Orion
Renaud, Jean-Michel ULiege

in Charpentier, Marie-Claude (Ed.) Les espaces du sauvage dans le monde antique. Approches et définitions (2004)

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See detailComputation of the Malpasset dam break with a 2D conservative flow solver on a multiblock structured grid
Erpicum, Sébastien ULiege; Archambeau, Pierre ULiege; Dewals, Benjamin ULiege et al

in Proceedings of the 6th International Conference of Hydroinformatics (2004)

In the global framework of safety, the study of the hydraulic consequences of a dam breaking, sudden and instantaneous for concrete structures, gradual for earth ones, is of major interest in the scope of ... [more ▼]

In the global framework of safety, the study of the hydraulic consequences of a dam breaking, sudden and instantaneous for concrete structures, gradual for earth ones, is of major interest in the scope of prevention policies or protection plans for populations and goods. Suitable numerical models, coupled with contemporary computational possibilities, allow engineers to forecast these complex situations with a great reliability. In this field, WOLF 2D is an efficient analysis and optimisation tool, which has been completely developed by the Applied Hydrodynamics and Hydraulic Constructions team (HACH – http://www.ulg.ac.be/hach) of the University of Liege. It is part of WOLF free surface flows computation package, which includes in the same development environment the resolutions of the 1D Saint-Venant equations, the 2D shallow-water equations as well as a physically based hydrological model and powerful optimisation capabilities based on Genetic Algorithms. The interactive and unique user-interface, with high performance pre- and post-processing, allows monitoring 3-D large-scale runs graphically while they proceed, as well as generation of 3D videos. Each code handles general multiblock meshes, dealing with natural topography and mobile bed simultaneously, for any unsteady situation with mixed regimes and moving hydraulic jumps. By this way, WOLF deals with all free surface hydraulic phenomena, from hydrological runoff and river propagation to extreme erosive flows on realistic mobile topography, such as gradual dam breaching processes. It has moreover proved its efficiency and reliability for years by numerous real applications. The first part of this paper covers a brief description of the 2D multiblock flow solver WOLF 2D and the underlying mathematical model. The second part depicts the application of WOLF computation capabilities to the well-known Malpasset dam break (France, 1959), which induced a catastrophic almost instantaneous release of 48 millions m³ of water in the Reyran river valley down to the town of Frejus and the Mediterranean sea. Data available thanks to the CADAM EU-project are used to assess the results. [less ▲]

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See detailModelling of the wave propagation, the coastal currents and the induced topographic changes
Fraikin, Catherine; Archambeau, Pierre ULiege; Erpicum, Sébastien ULiege et al

in Proceedings of the 9th International Symposium on River Sedimentation (2004)

This paper models the sea bottom evolution. This model is built up on three main parts. The first one describes the wave propagation, taking simultaneously into account the refraction, the diffraction and ... [more ▼]

This paper models the sea bottom evolution. This model is built up on three main parts. The first one describes the wave propagation, taking simultaneously into account the refraction, the diffraction and the reflection but also the energy dissipation caused by wave breaking. This model is solved by the numerical method of the finite volumes, using an iterative resolution (the GMRES method). Several validations of this model have been carried out on many examples such as harbors of various geometries and depths, beaches,… The wave induced currents are computed in the second part based on the concept of the radiation stresses describing the excess of the flux momentum caused by the waves. A model based on the complete Navier-Stokes equations integrated on the depth and associated with appropriated forcing and friction terms is used. This model is computed as an update of WOLF software (HACH, ULg) and is applied to some examples such as beaches with or without coastal structures. Finally, the third part is about the sediment transport. It exhibits the topographic modifications of the coastal sea bottom caused by the waves and their currents. A loop execution of these three models ends this work. It gives us an operational tool to describe the topographic evolution of the coastal areas caused by the incident waves, the induced currents and then the resulting sediment transport, fulfilling the objectives of this paper. [less ▲]

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See detailImportance de la consommation alimentaire pour le développement durable de la production agricole : dispositifs mis en place en Région wallonne
Duquesne, Brigitte ULiege; Lebailly, Philippe ULiege

in Gervais, Jean-Philippe; Larue, Bruno; Rastoin, Jean-Louis (Eds.) et al Développement durable et globalisation dans l'agroalimentaire (2004)

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See detailEffects of a micro hydroelectric power plant upon population abundance, mobility and reproduction behaviour of European grayling T. thymallus and brown trout S. trutta in a salmonid river
Ovidio, Michaël ULiege; Paquer, Frédéric ULiege; Capra, Hervé et al

in Garcia de Jalon, Diego; Vizcaino Martinez, Pilar (Eds.) International Symposium on Ecohydraulics. Aquatic habitat: Analysis & Restoration (2004)

This study examines the potential effects of a new micro hydroelectric power plant (MHPP) on the behaviour (habitat use, movements) and population abundance of European grayling (T. thymallus) and brown ... [more ▼]

This study examines the potential effects of a new micro hydroelectric power plant (MHPP) on the behaviour (habitat use, movements) and population abundance of European grayling (T. thymallus) and brown trout (S. trutta) in the Lhomme (Belgian Ardennes). Thirteen grayling and five brown trout were captured before their spawning period and were manually radio-tracked up to 6 times a week. Population density and biomass were estimated into two different sampling sectors with electric fishing, before and after the MHPP started up. The mobility patterns of grayling and trout in the reach of the river Lhomme influenced by the MHPP strongly contrasted with results obtained in an undisturbed river of the same type in the Belgian Ardennes. Movements were mostly restricted and rarely increased during the spawning period. Spawning took place, but was disturbed by hydropeakings. The population biomass of grayling and trout decreased by 61 % and 23 % respectively, five months after the start-up of the MHPP exploitation. [less ▲]

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