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See detailDo Temperature Variations at the Surface of a Hot Non-Radial Pulsator Change Significantly the Line-Profile Variations?
De Ridder, J.; Aerts, C.; Dupret, Marc-Antoine ULg et al

in IAU Colloq. 185: Radial and Nonradial Pulsationsn as Probes of Stellar Physics (2002)

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See detailCome migliorare la caduta di respirazione nel vitello appena nato attraverso un "nursing" appropriato.
Lekeux, Pierre ULg; Uysterpruyst, Christophe; Borceux, J. P.

in Proceedings: 4° Congresso Nazionale Multisala SIVAR (2002)

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See detailThe Valence Quark Distribution of the Pion
Lansberg, Jean-Philippe ULg; Bissey, F.; Cudell, Jean-René ULg et al

in Dong Su; Burchat, Patricia (Eds.) XXII Physics in Collision Conference (PIC02) (2002)

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See detailDéficience sévère en hormone de croissance chez les patients non diabétiques avec un microadénome corticotrope : Effets de la chirurgie hypophysaire et implications thérapeutiques
Valdes Socin, Hernan Gonzalo ULg; Laret, V.; de Fays, C. et al

in XXème Congrès de la Société Française d'Endocrinologie - Abstract book (2002)

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See detailResuscitation procedures to improve perinatal adaptation in calves
Uysterpruyst, C. H.; Coghe, J.; Dorts, T. H. et al

in Proceedings : XXIIth World Buiatrics Congress (2002)

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See detailEducational Software for Digital Photogrammetry
Da Col, Anne; Billen, Roland ULg; Schumacker, Benoît et al

in Arch. of Photogrammetry, Cartography and Remote Sensing (2002)

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See detailBelgian Report to the IAG-subcommission “EUREF”
Bruyninx, Carine; Defraigne, Pascale; Ducarme, Bernard et al

in Torres, J.; Hornik, H. (Eds.) EUREF Publication N°10 (2002)

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See detailTeaching operational pedology in an agricultural university.
Bock, Laurent ULg

in 17th World Congress of Soil Science, Bangkok, Thailand, 14-20 August2002 (2002)

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See detailInvestigation of the biological activity in MSW landfills under dry climates (Tunisia and Haiti)
Hiligsmann, Serge ULg; Lardinois, M.; Rodriguez, C. et al

in Kocasoy, G.; Atabarut, T.; Nuhoglu, I. (Eds.) Appropriate environmental and solid waste management and technologies for developing countries (2002)

This paper presents the results of the investigations carried out over two years (April 2000 – February 2002) to quantify the biological activity that develops in four municipal solid waste landfills ... [more ▼]

This paper presents the results of the investigations carried out over two years (April 2000 – February 2002) to quantify the biological activity that develops in four municipal solid waste landfills located in different regions of two dry climate countries i.e. Haiti and Tunisia. Since the climatic water balance is negative (potential evapotranspiration being 1.5 to 5 times higher than rainfall), it has often been considered that this kind of landfill has neither environmental impact nor efficient biological activity. However, after five campaigns of sampling and analysis at different seasons, the results of the investigations show a relatively stable biological activity in the four landfills with biogas often containing more than 60 percent of methane. Indeed, under the upper waste layer that was effectively dry (dry weight from 85 to 98 %), the core of refuse contained between 35 and 65 % of dry matter. In some boreholes, the produced gases periodically expelled leachates like small geysers. Therefore, the results assert that landfill management in countries with dry climate should be considered with adapted technologies, not necessary the same as under temperate or humid climates. [less ▲]

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See detailRecent advances in bovine pneumology
Lekeux, Pierre ULg; Borceux, J.; Boutet, Philippe ULg et al

in Kaske, Martin; Scholz, Henner; Höltershinken, Martin (Eds.) Recent developments and perspectives in bovine medicine (2002)

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See detailSpectators’ characteristics, expenses and feelings. Comparison between four top level sport events organized in the region of Liège
Lenzen, Benoît; François, Cédric; Jurion, Bernard ULg et al

in Laaksonen, K.; Löppönen, P.; Nykänen, E. (Eds.) et al Book of proceedings of the 10th congress of the European Association for Sport Management. Future of sport management (2002)

A team of researchers collected data from one thousand of spectators attending 10 sport events organized within the region of Liège during the year 1999. Spectators were randomly submitted to an ... [more ▼]

A team of researchers collected data from one thousand of spectators attending 10 sport events organized within the region of Liège during the year 1999. Spectators were randomly submitted to an individual interview. Questions were about four main themes: (1) socio-economic characteristics of spectators; (2) spending; (3) opinion about the sport event; and (4) opinion about the region. [less ▲]

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See detailAtlas of MSW landfills and dumpsites in developing countries
Lardinois, M.; Hiligsmann, Serge ULg; Rodriguez, C. et al

in Kocasoy, G.; Atabarut, T.; Nuhoglu, I. (Eds.) Appropriate environmental and solid waste management and technologies for developing countries (2002)

This paper presents the results of a six-year experience in collecting data on landfills and dumpsites in developing countries. Information such as the position of a landfill, its size and the way it is ... [more ▼]

This paper presents the results of a six-year experience in collecting data on landfills and dumpsites in developing countries. Information such as the position of a landfill, its size and the way it is managed are gathered in a database. The characterisation of wastes is also performed. Finally the actions taken or to be taken on each site are summarized. The purpose of such a project is to keep in memory all the information available about the main landfills and dumpsites in developing countries. This allows the identification and the management of their negative impacts on the environment. Furthermore, this tool will be of first help to set up proper rehabilitation projects. At present time, information about 85 landfills from 13 countries has been collected. The main partners of this project are Tunisia, Haiti, Senegal, Burkina Faso and Cuba. Besides those factual partnerships, new collaboration projects are being discussed with other countries such as Guinea. This work has already received the positive support of people involved in waste management in West Africa. The Atlas of MSW landfills and dumpsites in developing countries is published on the Internet (http://www.ulg.ac.be/cwbi/index.htm). Thanks to the support of the IEPF (Institut de l'Energie et de l'Environnement de la Francophonie / Institute for Energy and Environment in French talking Countries; IEPF is a member of AIF), it will be entirely updated and diffused on a broad range. This includes development of a new relational database and Internet site and the edition of a paper version of the Atlas. [less ▲]

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See detailExplicit Thermodynamic Properties Using Radial Basis Functions Neural Networks
Adam, Olivier; Léonard, Olivier ULg

in Proceedings of the second SIAM international Conference on Data Mining (2002)

Gas turbine design, development, monitoring and maintenance are widely based on numerical simulations of the steady and transient engine performance. Most of the equations that are solved in the ... [more ▼]

Gas turbine design, development, monitoring and maintenance are widely based on numerical simulations of the steady and transient engine performance. Most of the equations that are solved in the simulation programs involve the thermodynamic properties of the fluid flowing through the engine. These properties depend on temperature, pressure, humidity and fuel dosage. As the solution of chemical equilibrium is not compatible with real-time computations, a chemical solver is used off-line to generate a large database which neural networks are trained on. These networks are built on radial basis functions such as multiquadrics. A forward selection approach is used to select data points from the training set as the centers of the transfer functions. The selection stops when the prediction error starts growing. The resulting networks for specific heat and enthalpy of the gas mixture are 3 orders of magnitude faster than the chemical solver. In order to further increase the efficiency and the generalization capabilities of the model, an external optimization solver has been used to tune the shape of the transfer functions. Several solutions are proposed and preliminary results are presented. [less ▲]

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See detailAcquis des élèves à 15 ans et parcours de formation
Lafontaine, Dominique ULg; Demeuse, Marc ULg

in Capital humain et marchés du travail : perspectives régionales et européennes (2002)

Dans quelle mesure le parcours de formation des jeunes âgés de 15 ans influence-t-il le niveau de leurs acquis pour des compétences fondamentales comme la lecture, les mathématiques et les sciences ? Quel ... [more ▼]

Dans quelle mesure le parcours de formation des jeunes âgés de 15 ans influence-t-il le niveau de leurs acquis pour des compétences fondamentales comme la lecture, les mathématiques et les sciences ? Quel bagage de formation possèdent ces jeunes où ils peuvent, formellement, quitter la scolarité à temps plein ? Les données de la toute récente enquête internationale PISA (Programme pour le suivi des acquis des élèves de 15 ans) de l'OCDE permettent d'apporter des éléments de réponse à cette question et d'examiner les résultats de la Communauté française de Belgique à la lumière de ce qui se passe dans d'autres systèmes éducatifs proches ou éloignés du nôtre. [less ▲]

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See detailPinéalomes familiaux : Etudes biologiques et génétiques préliminaires
Allouch, A.; Valdes Socin, Hernan Gonzalo ULg; Hendrick, J. C. et al

in XXème Congrès de la Société Française d'Endocrinologie - Abstract book (2002)

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See detailLes atouts multiples de la lemmatisation : l’exemple du latin
Mellet, Sylvie; Purnelle, Gérald ULg

in JADT 2002, 6es Journées internationales d’Analyse statistique des Données Textuelles (2002)

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See detailIs it safe to design a building structure with simple connections, when they are known to exhibit a semi-rigid behaviour
Braham, M.; Jaspart, Jean-Pierre ULg

in Proceedings of the Third European Conference on Steel Structures (EUROSTEEL) (2002)

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See detailMaladies et croissance des veaux Blanc-Bleu Blege en fermes commerciales
de Behr, V.; Cabaraux, Jean-François ULg; Hornick, Jean-Luc ULg et al

in 9èmes Rencontres autour des Recherches sur les Ruminants (2002)

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See detailWolf software: a fully integrated device applied to modelling gradual dam failures and assessing subsequent risks
Archambeau, Pierre ULg; Dewals, Benjamin ULg; Erpicum, Sébastien ULg et al

in Advances in Fluid Mechanics IV (2002)

Dam breaching is an important factor that should be included in an embankment break model. Indeed the assumption of instantaneous break is not suitable in case of earth dams, which fail gradually and thus ... [more ▼]

Dam breaching is an important factor that should be included in an embankment break model. Indeed the assumption of instantaneous break is not suitable in case of earth dams, which fail gradually and thus induce a delayed peak outflow, significantly reinforcing the flood wave front. Unlike computations performed classically, WOLF software package deals with the different phenomena (erosion processes, reservoir emptying and downstream wave propagation) in a completely integrated way. This finite volume computer code has been completely developed by the authors at the University of Liege. Transient discontinuities are properly handled thanks to an original splitting of the convective terms. The paper briefly presents WOLF software, which includes a physically based hydrological model, an original 1D flood routing (appropriate for any natural river network) and a 2D shallow-water solver. The latest hydrodynamic model is coupled to a mass balance for bed load sediments. Solid discharges are evaluated with reliable transport capacity laws. Gravity induced solid discharges are taken into account by means of side slope stability analysis. This paper also exhibits how WOLF software package has been successfully applied to the completely coupled computation of a gradual dam breaching process, with a focus on downstream effects on wave propagation. WOLF proves its ability to achieve the integrated computation of solid transport, flows upstream, through the breach, in the scour hole and in the whole downstream valley. Major feedback effects on the upstream part of the reservoir are shown and they demonstrate the relevance of such an integrated approach. [less ▲]

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See detailModélisation des réflexions diffuses en acoustique des salles: état de la question
Embrechts, Jean-Jacques ULg

in Actes du 6è Congrès Français d'Acoustique (2002)

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See detailHydrogeological data requirements for assessment of natural attenuation
Haerens, Bruno; Dassargues, Alain ULg

in Proceedings of the National Colloquium CBGI-BCGI ‘Réhabilitation des zones polluées, inventaire, gestion et assainissement / Herinrichting van verontreinigdde zones, inventaris, beheer en sanering (2002)

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See detailLa protection juridique de l'embryon
Leleu, Yves-Henri ULg; Langenaken, Evelyne ULg

in Rapports du XIeme congrès de l'Académie internationale de droit comparé (2002)

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See detailA Methodology for Updating Large Scale Ortho-Photomaps by Means of VHR Satellite imagery
Donnay, Jean-Paul ULg; Seba, Gautier; de Béthune, Stanislas et al

in Maktav, Derya; Jürgens, Carsten; Erber Sunar, Filiz (Eds.) et al Proceedings of the 3d International Symposium of Remote Sensing of Urban Areas (2002)

Some authorities (DGPL) of the Walloon Region (Belgium) are involved in the realization of a complete regional coverage (16,844 km²) of natural colour ortho-photomap to be used at large scales (up to 1 ... [more ▼]

Some authorities (DGPL) of the Walloon Region (Belgium) are involved in the realization of a complete regional coverage (16,844 km²) of natural colour ortho-photomap to be used at large scales (up to 1:4000). These are made of very high-resolution digital ortho-rectified aerial photos presented as raster files. Those rasters are grouped by corresponding administrative boundaries and distributed to the local authorities in order to be used for various land and urban planning purposes. One goal of the DGPL is to provide the local administrations with up to date image data, within the limits of some obvious financial constraints. Because significant changes in the landscape appear at different rates over the time and space, it was suggested to devise a methodology to find out these changes would require a rapid update of the imagery. In regard to this situation, a pilot project has been set up in the year 2000 aiming at detecting the location, the extent and the nature of landscape changes in contrasted areas - urban, suburban, rural - from adequately processed very high resolution (VHR) satellite images - typically Ikonos multi-spectral (4m) and panchromatic (1m) images. Hence, this project had to cope with various issues related to multi-source analysis, geometric and radiometric aspects of the processing VHR data, diachronic analysis, in order to provide the administration with the basic knowledge and the appropriate tools to carry out the proposed task. This communication presents the proposed operational methodology for change detection including all processing steps from the digital image processing (image fusion technique, ortho-rectification analysis, change detection schemes). Along the way it also introduces an assessment of the possible complementarities and convergence of VHR satellite imagery and aerial photography. [less ▲]

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See detailChansons liégeoises de conscrits. La mise en page de la voix populaire
Droixhe, Daniel ULg

in Leclerc, M.-D.; Robert, A. (Eds.) Chansons de colportage (2002)

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See detailSur la concurrence entre "relatifs" et "démonstratifs de liaison" chez les historiens latins : l'exemple de Tacite
Longrée, Dominique ULg

in Bolkestein, Machtelt; Pinkster, Harm; Kroon, Caroline (Eds.) et al Theory and description in Latin linguistics, Selected papers from the Eleventh International Colloquium on Latin Linguistics, Amsterdam, June 24-29, 2001 (2002)

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See detailDistributed GIS for sharing large scale data between public agencies. A case study in Belgium
Donnay, Jean-Paul ULg

in GIS 2002 International Conference Proceedings (2002)

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See detailQuantitative Micro-Imaging of Building Materials : from reality to dream
Pirard, Eric ULg; CSTC

in La microscopie appliquée aux matériaux de construction (2002)

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See detailVerba sentiendi et modalisation de l'énoncé chez les historiens latins
Longrée, Dominique ULg

in Fruyt, Michèle; Moussy, Claude (Eds.) Les modalités en latin, Colloque du Centre Alfred Ernout, Université de Paris IV, 3, 4 et 5 juin 1998 (2002)

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See detailThe Polarization Properties of Broad Absorption Line QSOs: Observational Results
Hutsemekers, Damien ULg; Lamy, H.

in Mass Outflow in Active Galactic Nuclei: New Perspectives. ASPC 255 (2002)

Correlations between BAL QSO intrinsic properties and polarization have been searched for. Some results are summarized here, providing possible constraints on BAL outflow models.

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See detail3D Finite Element Analysis of Axial Flux Permanent Magnet Motors with Dual Formulations
Ferreira da Luz, M.; Dular, Patrick ULg; Sadowski, N. et al

in Proceedings of the 10th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering (2002)

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See detailModelling of electromagnetic waves in periodic media with finite elements
Nicolet, A.; Guenneau, S.; Geuzaine, Christophe ULg et al

in 2nd international conference on advanced computational methods in engineering, ACOMEN 2002 (2002)

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See detailNumerical Simulations and Experimental Investigations of the Semi-Solid Metal Processing of Steels
Rassili, A.; Geuzaine, Christophe ULg; Legros, Willy ULg et al

in Proceedings of the 7th International Conference on Semi-Solid Processing of Alloys and Composites, S2P 2002 (2002)

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See detailAnalysis of linear structures with non linear dampers
Denoël, Vincent ULg; Degée, Hervé ULg

in Proceeding of the Eurodyn Conference 2002 (2002)

This paper provides information about the numerical simulation of the dynamic behaviour of linear structures including non linear dampers, for which the relation between the damping force and the velocity ... [more ▼]

This paper provides information about the numerical simulation of the dynamic behaviour of linear structures including non linear dampers, for which the relation between the damping force and the velocity is described by a power law. A first part of the paper deals with single degree of freedom (SDOF) systems, with a particular emphasis on the resolution of the non linear equation allowing to compute the damping force corresponding to a given velocity. A second part deals with multi degree of freedom (MDOF) systems, and presents a special algorithm to study the behaviour of structures with a very small number of non linear components. [less ▲]

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See detailA General Method for the Harmonic Balance Finite Element Modelling of Rotating Electromagnetic Devices
Gyselinck, J.; Vandevelde, L.; Dular, Patrick ULg et al

in Proceedings of the 10th IEEE Conference on Electromagnetic Field Computation (CEFC'2002) (2002)

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See detailA perturbation technique for Finite Element Modelling of Piezoelectric Vibrations in Travelling Wave Ultrasonic Motors
Ledinh, T.; Dular, Patrick ULg; Gyselinck, J. et al

in Proceedings of the second international conference on advanced computational methods in engineering, ACOMEN 2002 (2002)

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See detailMulti-Harmonic Modelling of Motional Magnetic Field Problems using a Hybrid Finite Element--Boundary Element Discretisation
Gyselinck, J.; Geuzaine, Christophe ULg; Dular, Patrick ULg et al

in 2nd international conference on advanced computational methods in engineering, ACOMEN 2002 (2002)

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See detailTwo-dimensional Harmonic Balance Finite Element Modelling of Electromagnetic Devices coupled to Nonlinear Circuits
Gyselinck, J.; Dular, Patrick ULg; Geuzaine, Christophe ULg et al

in Proceedings of the XVII Symposium on Electromagnetic Phenomena in Nonlinear Circuits, EPNC 2002 (2002)

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See detailLinear and nonlinear thermal instability of a rotating saturated porous medium heated from below
Desaive, Thomas ULg; Hennenberg, M.; Lebon, Georgy ULg

in 1st international conference on applications of porous media (2002)

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See detailEffect of initial imperfections in numerical simulations of collapse behaviour of stiffened plates under compression
André, I.; Degée, Hervé ULg; De Ville De Goyet, Vincent ULg et al

in Proceedings of the Third European Conference on Steel Structures (2002)

The slenderness of plated structures together with a generalised use of high strength steel leads to a great importance of stability phenomena. The practical way to deal with such problems is to use rules ... [more ▼]

The slenderness of plated structures together with a generalised use of high strength steel leads to a great importance of stability phenomena. The practical way to deal with such problems is to use rules proposed in design codes. A common alternative to design codes is the use of non linear finite element simulations. One of the most sensitive point in these simulations is the choice of the initial imperfections to be introduced in the model. The present paper discusses the effect of initial imperfections on the calculated collapse load. Several parameters are considered (shape, magnitude and direction). Results of numerical simulations are also compared with those of a design using Eurocode 3 or ECCS Recommendations. Two cases of plate geometry are studied (plate with one single stiffener and plate with multiple stiffeners). [less ▲]

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See detailQ0059-2735: A Hybrid Starburst/Broad Absorption Line QSO ? Clues from Spectropolarimetry
Hutsemekers, Damien ULg; Lamy, H.

in Mass Outflow in Active Galactic Nuclei: New Perspectives. ASPC 255 (2002)

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See detailA concrete beam finite element accounting for shear effects
Kaiser, F.; Degée, Hervé ULg

in Proceedings of the 3rd DIANA Conference - Finite Elements in Civil Engineering Applications (2002)

This paper aims at presenting a new beam finite element allowing to simulate the behaviour of structures made of concrete beam structural elements where shear can have a significant effect. An incre ... [more ▼]

This paper aims at presenting a new beam finite element allowing to simulate the behaviour of structures made of concrete beam structural elements where shear can have a significant effect. An incre-mental MCFT-based constitutive law (Modified Compression Field Theory) describes behaviour of concrete. Results obtained by using this element are compared with membrane models and tests results. [less ▲]

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See detailConsequences of t-channel unitarity for gamma(*) p and gamma(*) gamma(*) amplitudes
Cudell, Jean-René ULg; Martynov, E.; Soyez, G.

in Bentvelsen, S.; de Jong, P.; Koch, J. (Eds.) et al ICHEP 2002 (2002)

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See detailOn the value of incorporating dominance effects in genetic evaluation of dairy cattle.
Druet, Tom ULg; Solkner, J.; Misztal, I. et al

in Proceedings of the 7th World Congress on Genetics Applied to LivestockProduction, Montpellier, France, August, 2002. Session 1 (2002)

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See detailCharacteristics and Cause of Localized Auroral Uv Emission At High Latitude
Frey, H. U.; Mende, S. B.; Immel, T. J. et al

in EGS XXVII General Assembly, Nice, 21-26 April 2002 (2002)

The FUV instrument on IMAGE frequently observes localized ultraviolet emission at high latitudes, poleward of the general auroral oval. These localized emissions occur during northward IMF conditions and ... [more ▼]

The FUV instrument on IMAGE frequently observes localized ultraviolet emission at high latitudes, poleward of the general auroral oval. These localized emissions occur during northward IMF conditions and there are two different types of them. One type is especially distinct in the observations of Doppler shifted Lyman alpha emission from proton precipitation. This type occurs during high solar wind dynamic pressure. We interpret this emission as the optical signature of proton precipitation into the cusp after lobe reconnection at the magnetopause. The second type of localized emission is distinct in the wide-band (WIC) and oxygen (SI13) images, but is absent in the proton images. This emission occurs during positive IMF By, but very low solar wind density and dynamic pressure. We interpret this emission as the optical signature of electron acceleration in the upward part of a field aligned current circuit after reconnection. [less ▲]

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See detailIonospheric Conductances Due To Auroral Proton and Electron Precipitation Deduced From Image-fuv Observations.
Coumans, Valérie ULg; Hubert, Benoît ULg; Meurant, M. et al

in EGS XXVII General Assembly, Nice, 21-26 April 2002 (2002)

The FUV instrument on the IMAGE (Imager for Magnetopause-to-Aurora Global Ex- ploration) satellite monitors the aurora in three different spectral regions. The Wide- band Imaging Camera (WIC) observes the ... [more ▼]

The FUV instrument on the IMAGE (Imager for Magnetopause-to-Aurora Global Ex- ploration) satellite monitors the aurora in three different spectral regions. The Wide- band Imaging Camera (WIC) observes the molecular N2 LBH and the atomic NI emissions at 140-180 nm. The two channels of the Spectrographic Imager (SI) ob- serve the Doppler shifted Lyman- emission at 121.8 nm due to precipitating protons (SI12) and the electron auroral emission of OI at 135.6 nm (SI13). We calculate the Pedersen and Hall ionospheric conductances due to auroral particles based on FUV observations separately for the proton and electron precipitation. We first estimate the electron and proton energy fluxes from the FUV data, relying on energy degradation and auroral emission models. A two-stream model is used for the electron aurora while the proton aurora modeling is based on the direct Monte Carlo method, which gives a stochastic solution to the Boltzmann equations for the H+ - H beam. The electron energy is evaluated by combining observations from the three FUV instruments. For the proton energy, we use a statistical model based on in-situ particle measurements. Second, the particle energy and energy flux are used to estimate the ionization rates separately for protons and electrons, consistently with the energy degradation models. Finally, the electron and ion densities are estimated from ionization profiles, and the Pedersen and Hall conductances are calculated from fundamental equations. Appli- cations of the method to the distribution of the conductance at winter solstice in the course of substorm development over the north polar region will be illustrated. [less ▲]

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See detailThe Electron and Proton Energy Input Into The Auroral Thermosphere During Substorms: Remote Sensing With Image-fuv
Hubert, Benoît ULg; Gérard, Jean-Claude ULg; Meurant, M. et al

in EGS XXVII General Assembly, Nice, 21-26 April 2002 (2002)

This paper investigates the dynamical properties of the Eta model, a state-of-the- art nested limited-area model, following the approach previously developed by the present authors. It is first shown that ... [more ▼]

This paper investigates the dynamical properties of the Eta model, a state-of-the- art nested limited-area model, following the approach previously developed by the present authors. It is first shown that the intrinsic dynamics of the model depends crucially on the size of the domain, with a non-chaotic behavior for small domains, supporting earlier findings on the absence of sensitivity to the initial conditions in these models. The quality of the predictions of several Eta model versions differing by their domain size is next evaluated and compared with the Avn analyses on a targeted region, centered on France. Contrary to what is usually taken for granted, a non-trivial relation between predictability and domain size is found, the best model versions be- ing the ones integrated on the smallest and the largest domain sizes. An explanation in connection with the intrinsic dynamics of the model is advanced. [less ▲]

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See detailA steel beam element accounting for the cross section deformation
Degée, Hervé ULg

in Proceedings of the 3rd DIANA World Conferences - Finite Elements in Civil Engineering Applications (2002)

Classical beam elements are based on the assumption that the cross section of the element re-mains unchanged during the entire loading. However, this can be too simple for modeling the behavior of thin ... [more ▼]

Classical beam elements are based on the assumption that the cross section of the element re-mains unchanged during the entire loading. However, this can be too simple for modeling the behavior of thin-walled steel profiles, where local and distortional buckling are likely to occur. In this perspective, a spe-cial element taking into account the deformation of the cross section is presented and some examples of com-putations of critical bifurcation loads are presented. [less ▲]

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See detailLa protection juridique et la circulation routière
Paris, Catherine ULg

in Développements récents du droit des accidents de la circulation (2002)

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See detailOverview of the COMPETE program. ((V))
Ezhela, V. V.; Cudell, Jean-René ULg; Gauron, P. et al

in Jenkovsky, L.; Fiore, R. (Eds.) DIFFRACTION 2002: INTERPRETATION OF THE NEW DIFFRACTIVE PHENOMENA IN QUANTUM CHROMODYNAMICS AND IN THE S - MATRIX THEORY (2002)

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See detailModulation of dendritic cell phenotype by PGD2 and PGJ2 : consequence on the orientation of T helper response
Gosset, P.; Bureau, Fabrice ULg; Angeli, V. et al

in Proceedings : International Conference of the American Thoracic Society (2002)

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See detailAnalytic amplitudes for hadronic forward scattering: COMPETE update
Nicolescu, B.; Cudell, Jean-René ULg; Ezhela, V. V. et al

in Bentvelsen, S.; de Jong, P.; Koch, J. (Eds.) et al ICHEP 2002 (2002)

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See detailL'accompagnement du portage de cours en ligne comme facilitateur d'un déploiement de méthodes actives dans l'enseignement supérieur
Poumay, Marianne ULg; Dupont, Chantal ULg; Georges, François ULg et al

in Les méthodes actives dans l'enseignement supérieur. Regards pluriels et critiques sur les pratiques. (2002)

Le LabSET accompagne une vingtaine d'enseignants dans le portage à distance de leurs propres cours conventionnels, touchant plusieurs milliers d'apprenants au total. Défenseurs des pédagogies actives ... [more ▼]

Le LabSET accompagne une vingtaine d'enseignants dans le portage à distance de leurs propres cours conventionnels, touchant plusieurs milliers d'apprenants au total. Défenseurs des pédagogies actives, nous prônons l'idée que l'EAD n'est qu'un vecteur, un support dont on peut faire le pire comme le meilleur. L'une de nos actions, FORMADIS , assure l'accompagnement de 13 projets d'EAD (projets sélectionnés en 2001 par appel à propositions) par un minimum de 2 chercheurs, du personnel technique et l'apport d'un graphiste. La formation pédagogique se déroule en partie en ligne et en partie en présentiel de façon à correspondre et donc à servir directement aux différentes étapes d'élaboration d'un cours à distance, selon les principes d'isomorphisme et d'accent systématique sur le transfert. Cet accompagnement nous semble un moyen efficace de participer à la formation continuée des enseignants. Des démonstrations à mi-parcours ont montré la diversité des méthodologies mises en oeuvre dans ces cours et la valeur ajoutée due à l'EAD. Plus de 40 activités sont passées au crible du modèle des 7 paradigmes d'enseignement / apprentissage. Un nouvel appel à propositions d'accompagnements de projets d'EAD est lancé par le LabSET en 2002. [less ▲]

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See detailMéthode basée sur des cas et enseignement à distance visant le transfert des apprentissages : un exemple d'application
Leclercq, Dieudonné ULg; Georges, François ULg; Poumay, Marianne ULg

in Les méthodes actives dans l'enseignement supérieur. Regards pluriels et critiques sur les pratiques. (2002)

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See detailCyclopentenone prostaglandins at low concetrations exert pro-inflammatory effects through oxidative stress-induced ERK1/2 activation
Bureau, Fabrice ULg; Desmet, Christophe ULg; Mélotte, C. et al

in Proceedings: Spring Meeting of the Belgian Society of Physiology and Pharmacology (2002)

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See detailInventorying urban areas with Very High Resolution Satellite Images
Van de Voorde, Tim; Binard, Marc ULg; Op ’t Eyndt, Tom

in Ramon, J.; Ruiz, M.; Gold, M. (Eds.) Procredings of the 5th AGILE Conference on Geographical Information Science (2002)

Prior to the commercial availability of Very High Resolution (VHR) satellite imagery, the applicability of Earth Observation data in the urban planning sector was very limited. The spatial resolution of ... [more ▼]

Prior to the commercial availability of Very High Resolution (VHR) satellite imagery, the applicability of Earth Observation data in the urban planning sector was very limited. The spatial resolution of the imagery, supplied by platforms like Landsat TM and SPOT HRV, was too coarse to be of real practical use to urban planners and their applications. Satellite images of urban or sub-urban areas are characterized by large radiometric variations due to the small size and the diversity of the objects. This in turn causes a radiometric contamination between neighbouring pixels which renders object recognition nearly impossible. Satellite images with a higher resolution might alleviate this problem. The dawn of the VHR era was thus anticipated with great aspiration by urban remote sensing researchers. In the framework of a DWTC/OSTC Telsat 4 pilot project we proposed a methodology to employ IKONOS-21 imagery to develop an inventory of built-up, and un-built areas in Belgium’s Flemish region. Such an inventory can be of use to regional planning agencies that are responsible for the implementation of the government’s planning policies. In Flanders, AROHM (Administration of Spatial Planning, Housing, Monuments and landscapes) records, monitors, and evaluates the built-up areas. To do this, they need an extensive data input from the communities, which requires a lot of time and effort. A reliable and swift technique, based on earth observation data, and applicable for each residential area in Flanders, would be of great value to them. Not only would it allow them to make swift assessments more frequently, they could also double-check incoming data from the communities. The aforementioned project consisted of three parts: the visual interpretation of two study areas (Hasselt and Ghent), the automatic classification of these areas using both Maximum Likelihood and Neural Network classifiers, and the development of GIS procedures to transform the classified images into thematic maps like, for instance, a map of building densities. [less ▲]

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See detailStratégies nutritionnelles en vue de promouvoir le dépôt musculaire au détriment du dépôt graisseux : paramètres d'engraissement
Cabaraux, Jean-François ULg; Hornick, Jean-Luc ULg; de Behr, Vanessa et al

in Proceedings of the 7ème Carrefour des Productions Animales (2002)

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See detailInfluence of dietary protein source on fattening parameters of Belgian Blue double muscled cows
Cabaraux, Jean-François ULg; Hornick, Jean-Luc ULg; de Behr, Vanessa et al

in Book of abstracts of the 53rd Annual Meeting of the European Association for Animal Production (2002)

Detailed reference viewed: 20 (5 ULg)
See detailFire design study case of a high-rise steel storage building
Zaharia, Raoul; Franssen, Jean-Marc ULg

in Proceedings of the International Colloquium on Stability and Ductility of Steel Structures (2002)

Detailed reference viewed: 36 (2 ULg)
See detailQuality assessment of GPS Integrated Precipitable Water Vapour Estimations using Water Vapour Radiometer Observations
Pottiaux, Eric; Warnant, René ULg

in Proceedings of the IAG General Assembly 2001 (2002)

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See detailIntegrating geophysical and tracer test data for accurate solute transport modelling in heterogeneous porous media
Rentier, Céline; Brouyère, Serge ULg; Dassargues, Alain ULg

in Groundwater Quality: Natural and Enhanced Restoration of Groundwater Pollution (GQ’2001) (2002)

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See detailNumerical simulation of cavitation and grain growth during superplastic forming
Ponthot, Jean-Philippe ULg; ADAM, L.

in Proceedings of Plasticity, damage and Fracture at Macro, Micro and Nano Scales (2002)

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See detailAnalyse de la cessation d'activité en Belgique
Dellis, Arnaud; Desmet, Raphaël; Jousten, Alain ULg et al

in Capital humain et marchés du travail : perspectives régionales et européennes (2002)

L’objectif de cette étude est de montrer l’influence du système de retraite sur la cessation d’activité. La première étape consiste à estimer les incitations financières implicites à ce système et ensuite ... [more ▼]

L’objectif de cette étude est de montrer l’influence du système de retraite sur la cessation d’activité. La première étape consiste à estimer les incitations financières implicites à ce système et ensuite à les introduire comme variables explicatives du départ à la retraite dans une régression de type probit. Le résultat majeur de cette contribution est d’indiquer le rôle significatif de ces incitations sur les décisions individuelles. La seconde étape consiste à utiliser les résultats de cette modélisation pour analyser l’effet de réformes sur la prolongation de l’activité. Il apparaît que l’aménagement de certaines règles d’octroi et de calcul des pensions pourrait inciter les travailleurs âgés à différer l’âge de leur retraite. [less ▲]

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See detailContribution à la caractérisation de la distribution spatiale des teneurs en éléments traces métalliques dans les sols en région limoneuse belge
Colinet, Gilles ULg; Lacroix, D.; Laroche, J. et al

in Actes des 7ème Journées nationales de l'étude des sols (2002)

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See detailSearching for Colliding-Wind Signatures in a Sample of O-Star Binaries
Rauw, Grégor ULg; Sana, H.; Vreux, Jean-Marie ULg et al

in Interacting Winds from Massive Stars (2002)

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See detailLine-Profile Variability in the Massive Binary System HD 149404
Nazé, Yaël ULg; Carrier, Fabien; Rauw, Grégor ULg

in Interacting Winds from Massive Stars (2002)

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See detailL'initiation de Télémaque dans l'Odyssée
Renaud, Jean-Michel ULg; Wathelet, Paul ULg

in Hurst, André; Létoublon, Françoise (Eds.) La Mythologie et l'Odyssée. Hommage à Gabriel Germain. Actes du Colloque international de Grenoble, 20-22 mai 1999 (2002)

Ces dernières années, on a souvent décelé, dans les mythes, des traits initiatiques. Il s'agit là d'une possibilité d'explication utile, mais qui doit être maintenue dans des limites précises afin d ... [more ▼]

Ces dernières années, on a souvent décelé, dans les mythes, des traits initiatiques. Il s'agit là d'une possibilité d'explication utile, mais qui doit être maintenue dans des limites précises afin d'éviter des dérives fâcheuses. En ce qui concerne la mythologie grecque, il semble y avoir une tendance à distinguer deux niveaux d'initiation : 1) celle qui intéresse les adolescents qui doivent passer à l'âge adulte; 2) celle qui concerne un certain nombre de personnages extraordinaires. Dans le premier cas, il s'agit pour le jeune homme d'affirmer sa virilité en tuant un gibier, un ennemi ou un monstre redoutables. Il doit agir seul, mais des maîtres d'initiation peuvent lui apporter une aide secondaire et ils doivent juger de la réussite de l'épreuve. Dans le second cas, un être d'exception connaît une épreuve, souvent une mort réelle ou symbolique. S'il réussit l'épreuve, il acquiert une vertu particulière, éventuellement l'immortalité ou un succédané de celle-ci. Au cours de la seconde épreuve, le candidat peut être aidé par une divinité, dont le rôle est plus ou moins important et parfois décisif. Dans le présent article, on a rappelé qu'Ulysse avait successivement remporté le deux épreuves initiatiques, la première dans sa jeunesse en tuant un sanglier redoutable, et la seconde au cours de son périple qui le conduit dans l'autre monde. Examinant le rôle de son fils, Télémaque, particulièrement dans la Télémachie au début de l'Odysse, on est arrivé à la conclusion qu'apparemment Télémaque avait raté la première épreuve (son rôle à l'Assemblée d'Ithaque) et qu'il avait réussi la seconde (son voyage et son séjour à Pylos, puis à Sparte, est présenté comme un voyage dans l'autre monde, une sorte de réduction du périple de son père). [less ▲]

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See detailConsequences of t-channel unitarity for the interaction of real and virtual photons at high energies
Martynov, E.; Cudell, Jean-René ULg; Soyez, G.

in Jenkovsky, L.; Fiore, R. (Eds.) DIFFRACTION 2002: INTERPRETATION OF THE NEW DIFFRACTIVE PHENOMENA IN QUANTUM CHROMODYNAMICS AND IN THE S - MATRIX THEORY (2002)

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See detailImpact of uranium mining and processing on the environment of mountainous areas of Kyrgyzstan
Torgoev, Isakbek; Aleshyn, U; Havenith, Hans-Balder ULg

in Uranium in the Aquatic Environment (2002)

Abstract: In this report the results of analysis of modern geo-ecological situation in areas of uranium mining and milling in the territory of Kyrgyzstan are presented. Major threats for the mountain ... [more ▼]

Abstract: In this report the results of analysis of modern geo-ecological situation in areas of uranium mining and milling in the territory of Kyrgyzstan are presented. Major threats for the mountain environment and citizens which are connected to mining and processing of the uranium are due to the contamination of the hydrosphere by radio nuclides, and due to the stimulation of dangerous natural and technological processes (landslides, mudflows, destruction of the tailings and dumps) with unfavorable ecological consequences. [less ▲]

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See detailOptical Spectroscopy of Colliding-Wind Systems to be Observed with XMM
Sana, H.; Rauw, Grégor ULg; Gosset, Eric ULg et al

in Interacting Winds from Massive Stars (2002)

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See detailIsolement et caractérisation de sept lignées monosomiques d'addition de Gossypium australe F. Muell. sur G. hirsutum L.
Ahoton, L.; D'Hont, A.; Baudoin, Jean-Pierre ULg et al

in Actes des VIIIèmes Journées Scientifiques du Réseau "Biotechnologies, Amélioration des plantes et Sécurité alimentaire" (2002)

Afin d'évaluer les possibilités d'exploiter directement l'espèce sauvage australienne G. australe dans un programme d'amélioration génétique de la principale espèce de cotonnier cultivé, l'hexaploïde G ... [more ▼]

Afin d'évaluer les possibilités d'exploiter directement l'espèce sauvage australienne G. australe dans un programme d'amélioration génétique de la principale espèce de cotonnier cultivé, l'hexaploïde G. hirsutum x G. australe a été rétrocroisé par G. hirsutum pendant deux générations successives pour produire des pentaploïdes et des souches aneuploïdes. L'utilisation des pentaploïdes comme parent mâle dasn les rétrocroisements avec G. hirsutum a donné une importante descendance de plantes autofertiles qui étaient euploïdes ou oqui ne portaient qu'un seul chromosome surnuméraire de G. australe en plus des 52 chromosomes de G. hirsutum. Le caryotype de ces plantes a été déterminé au moyen d'observations cytogénétiques classiques de cellules mères des grains de pollen se trouvant en métaphase 1 de la méiose et par application de l'hybridation génomique in situ (GISH) avec l'ADN total du parent G. australe de l'hybride sur des chromosomes en métaphase de la mitose. L'analyse au moyen de marqueurs SSR cartographiés des plantes monosomiques d'addition produites a permis de distinguer parmi elles sept lignées porteuses d'un chromosome différent de G. australe. L'expression phénotypique de chacun de ces sept chromosomes de l'espèce australienne en addition du fonds génique de G. hirsutum est présentée. Les résultats obtenus mettent en évidence la subjectivité des caractères morphologiques pour distinguer entre elles des lignées monosomiques d'addition et soulignent l'importance de l'emploi de marqueurs moléculaires pour caractériser avec certitude des plantes porteuses de chromosomes surnuméraires étrangers. [less ▲]

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See detailL'HACCP dans la filière lait.
Belleflamme, Christel ULg; De Schutter, Tine; Sindic, Marianne ULg

in Productions animales et santé humaine. (2002)

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See detailDe l'image de l'autre à sa représentation : médiation et médiatisation
Servais, Christine ULg

in Trajectoires interculturelles : Représentation et image de l'autre dans le domaine francophone (2002)

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See detailModeling the Martian ionosphere using the Total Electron Content measurement by the NEIGE/NETLANDER experiment
Morel, Laurent; Witasse, Olivier; Warnant, René ULg et al

in Proceedings of the XXVII URSI General Assembly (2002)

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See detailFormadis : soutien au déploiement de formations ouvertes et à distance, en Wallonie et à Bruxelles
Dupont, Chantal ULg; Poumay, Marianne ULg; Georges, François ULg et al

(2002)

This paper presents an initiative, FORMADIS, aiming at producing a critical mass of quality courses and thus, contributing to the dissemination of good practices in ODL. A competitive call has been ... [more ▼]

This paper presents an initiative, FORMADIS, aiming at producing a critical mass of quality courses and thus, contributing to the dissemination of good practices in ODL. A competitive call has been launched in 2001 and 2002 to select 23 projects to be closely coached and turned into on-line active courses. The teachers, by working on their own course with the support of instructional, technical and graphic specialists move from a traditional way of considering their course to a more open view of what it could be. Applying the principles of isomorphism and transfer, the teacher training program in pedagogy, partly on line and partly face to face, helps in the different stages of development of the course. As anticipated, this setting appears to be an effective way to provide continuing education to teachers. The produced courses illustrate the diversity of implemented strategies and the added-value due to ODL. Over 40 activities have been described and analysed, according to the “7 teaching/learning paradigms” model. [less ▲]

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See detailA 3-D Magnetic Vector Potential Formulation Taking Eddy Currents in Lamination Stacks Into Account
Dular, Patrick ULg; Gyselinck, J.; Geuzaine, Christophe ULg et al

in Proceedings of the 10th IEEE Conference on Electromagnetic Field Computation (CEFC'2002) (2002)

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See detailApplication of the Fast Multipole Method to Hybrid Finite Element--Boundary Element Models
V Sabariego, Ruth ULg; Gyselinck, J.; Geuzaine, Christophe ULg et al

in Proceedings of the 2nd international conference on advanced computational methods in engineering, ACOMEN 2002 (2002)

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See detailAspects du comique dans le Roman en prose de Guillaume d’Orange
Henrard, Nadine ULg

in Bianciotto, Daniel; Galderisi, Claudio (Eds.) L'épopée romane. Actes du XVe Congrès international Rencesvals (2 vol) (2002)

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See detailDiscussion on “Ultimate Limit State Design of Ship Hulls"
Rigo, Philippe ULg

in SNAME Transactions vol. 110 (2002)

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See detailPrimitivisme agrarien ou capitalisme ? Economie et société chez les jansénistes du Grand Siècle
Vanhoorne, Frédérick ULg

in Cottret, Bernard; Cottret, Monique; Michel, Marie-José (Eds.) Jansénisme et puritanisme. Actes du colloque de Port-Royal des Champs, 14 septembre 2001 (2002)

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See detailModeling of Thin Insulating Layers in Dual Magnetodynamic Formulations
Dular, Patrick ULg; Geuzaine, Christophe ULg

in Proceedings of the 10th IEEE Conference on Electromagnetic Field Computation (CEFC'2002) (2002)

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See detailDual finite element formulations taking eddy currents in lamination stacks into account
Dular, Patrick ULg; Gyselinck, J.; Geuzaine, Christophe ULg et al

in Proceedings of the 5th Brazilian Conference on Electromagnetics, CBMag 2002 (2002)

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See detailDevelopment of a multibody model of a sprayer
Ooms, David ULg; Lebeau, Frédéric ULg; Maton, Nicolas et al

in Proceedings of AgEng (2002)

A multibody model of a sprayer boom including the suspension was developed by using ADAMS 11.0 (Mechanical Dynamics). The model was designed with the aim to describe the dynamic behaviour of different ... [more ▼]

A multibody model of a sprayer boom including the suspension was developed by using ADAMS 11.0 (Mechanical Dynamics). The model was designed with the aim to describe the dynamic behaviour of different types of booms and suspensions (double trapezium, trapezium, pendulum, …). This was obtained by creating a general model in which geometrical (dimensions) and mechanical parameters (mass and inertia, friction coefficients, stiffness and damping coefficients of the hinges, …) of the system were easily modified. A graphical interface especially designed authorised this easy modification. The validation of the model was obtained by measuring in real conditions the frame movements as solicitations and the boom movements as responses. The method was applied on a trailed sprayer equipped with a boom of 24 m and a trapezoidal suspension. Good accordance was found between measured and simulated vertical displacements. The model may decrease the development costs of suspension and boom designs. [less ▲]

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See detailMapping within-field soil variability for precision agriculture using electromagnetic induction
Hanquet, Bernard; Frankinet, Marc; Parez, Vincent et al

in Proceedings of AgEng (2002)

Among the crops production factors, the soil is obviously one of the most important. Therefore, within the context of Precision Agriculture, the spatial variability knowledge of its physical and chemical ... [more ▼]

Among the crops production factors, the soil is obviously one of the most important. Therefore, within the context of Precision Agriculture, the spatial variability knowledge of its physical and chemical properties is essential as a decision support information for cultural operations modulation. The purpose of this study is to assess the capability of electromagnetic induction sensing of apparent electrical conductivity (ECa) for the characterisation of withinfield variability of soil physical and/or chemical properties in the particular soil conditions encountered in our experimental area, namely non-saline deep silty soils. ECa maps were produced on a 7ha field in April 2001, September 2001 and April 2002. Concurrently, an intensive soil survey (112 points) was carried out in February 2001 in order to determine a series of physical, textural and chemical soil parameters. ECa accurately described clay content, and exchangeable K and Ca cations concentrations. [less ▲]

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See detailSpray controller for horizontal boom movements compensation
El Bahir, Loussain; Lebeau, Frédéric ULg; Destain, Marie-France ULg et al

in Proceedings of AgEng2002 (2002)

Longitudinal spray distribution is mainly affected by the horizontal speed variations of the nozzles. Manufacturers classically try to reduce unwanted nozzles movements using horizontal boom suspension ... [more ▼]

Longitudinal spray distribution is mainly affected by the horizontal speed variations of the nozzles. Manufacturers classically try to reduce unwanted nozzles movements using horizontal boom suspension but these methods show performance and price limitations. The purpose of this paper is to propose a spray controller aiming to compensate the effect of the horizontal boom movements on the spray distribution besides the effect of tractor speed variations. The controller is based on three main parts: a control law describing the relationship between nozzle speed, nozzle flow and spray coverage; a real time measurement of the boom horizontal speed variations using micro-machined capacitive accelerometers and Pulse Width Modulation (PWM) no zzle flow actuators. A prototype was developed using a processor board controller (dSpace) and tested on a laboratory test bench. The nigrosine solution spray coverage was measured using image analysis for field representative multi-sine nozzle speed variations. The spray coverage uniformity using the spray controller showed about 51% compensation of the spray coverage variations observed without controller. [less ▲]

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See detailSoil nitrates in pastures rotationally grazed by cows: relation with urea in milk and blood plasma
Dieguez Cameroni, F.; Cabaraux, Jean-François ULg; de Behr, V. et al

in Proccedings of 19th European Grassland Federation General Meeting (2002)

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See detailApplication of image analysis to the identification and rating of road surface distress
Rasse, Catherine; Leemans, Vincent ULg; Destain, Marie-France ULg et al

in Correia; Branco (Eds.) Bearing Capacity of Roads, Railways and Airfields (2002)

Numerical image analysis is used to detect narrow cracks on bituminous pavement. This problem is complicated because of the variable road aspect, which depends on coarseness textures, changing ambient ... [more ▼]

Numerical image analysis is used to detect narrow cracks on bituminous pavement. This problem is complicated because of the variable road aspect, which depends on coarseness textures, changing ambient lighting, presence of humidity and because of the poor contrast of the cracks with regard to road texture. The paper presents algorithms suited to detect random cracks edges in a noisy environment in three stages. The pre-treatment consisted mainly in applying a background correction to eliminate the heterogeneity due to humidity, shade, ... In the treatment, a threshold value was applied to segment the 'object' from the rest of the image. As these objects may be cracks, part cracks, or some noise erroneously segmented as defect, a post-treatment was applied to appreciate more accurately if a pixel belonged to an object or to the background. It aimed also to assembly parts of the cracks in continuous structure. When compared to visual detection, efficient detection of cracks is obtained. Further work needs to be done to get an automatic detection of the cracks whatever the road texture. [less ▲]

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See detailImplicit-explicit time integration algorithms for the numerical simulation of blade-casing interactions
Noels, Ludovic ULg; Stainier, Laurent ULg; Ponthot, Jean-Philippe ULg et al

in Rajendran, A. M.; Jones, B. N.; Brebbia, C. A. (Eds.) Structures under Shock and Impact VII (2002)

In order to solve fast dynamic problems, an explicit method is the most adapted. But for slower dynamics, an implicit method is more stable. Typical industrial problems are governed by high frequency, e.g ... [more ▼]

In order to solve fast dynamic problems, an explicit method is the most adapted. But for slower dynamics, an implicit method is more stable. Typical industrial problems are governed by high frequency, e.g. impact, during short time intervals and slower dynamics, e.g. spring-back, during other time intervals. The optimal solution is then to have both implicit algorithm and explicit methods readily available in the same code and to be able to switch automatically from one to the other. Criteria that decide when to shift from a method to another have been developed here. Implicit balanced restarting conditions that annihilate numerical oscillations resulting for an explicit calculation are also proposed. [less ▲]

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See detailL’HACCP dans la filière lait.
Belleflamme, Christel ULg

in Septième Carrefour des Productions animales : Productions animales et santé humaine. (2002)

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See detailGénéalogie de la peinture de paysage au XVIe siècle
Allart, Dominique ULg

in Toussaint, Jacques (Ed.) Autour de Henri Bles (2002)

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See detailEthanol-conditioned withdrawal syndrome
Quertemont, Etienne ULg; De Witte, Philippe

in Proceedings of the 22nd European Winterconference on Brain Research (2002)

The withdrawal syndrome is closely related to the concepts of tolerance and physical dependence. The chronic consumption of a drug is believed to induce adaptive changes that are designed to oppose the ... [more ▼]

The withdrawal syndrome is closely related to the concepts of tolerance and physical dependence. The chronic consumption of a drug is believed to induce adaptive changes that are designed to oppose the acute effects of the drug. Such adaptive changes increase the tolerance to acute drug effects but lead to physical dependence, which is revealed by withdrawal symptoms when the drug is cleared from the body. However, another form of adaptive response to repeated drug consumption has been identified. This adaptive response appears after the intermittent repeated administration of a drug in association with the same set of environmental stimuli. After several associations, these environmental stimuli become able to induce a conditioned adaptive response. Such response leads to the phenomenon of “environment-dependent tolerance” that was observed with many drugs of abuse. However, if the drug is not administered, the conditioned stimuli alone may induce a “conditioned withdrawal syndrome”. Although less studied than the classical withdrawal syndrome, this conditioned withdrawal syndrome may be of importance for the development of drug dependence. In our experiments, we have studied the development of a conditioned withdrawal syndrome after repeated associations of a specific set of environmental stimuli with ethanol injections in Wistar rats. After repeated administrations of ethanol, the rats showed a clear environmental-dependent tolerance to ethanol. Furthermore, these conditioned stimuli induced behavioral (hyperexcitation) and neurochemical (increase glutamate release) responses similar to those observed after chronic alcohol withdrawal. [less ▲]

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See detailManagement of hypercalcemia from Parathyroid Carcinoma by immunisation
Betea, Daniela ULg; Bradwell, A. R.; Valdes Socin, Hernan Gonzalo ULg et al

in The Endocrine Society's 84th Annual Meeting - Abstract book (2002)

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See detailRepairing Concrete with Self Compacting Concrete: Testing Methodology Assessment
Courard, Luc ULg; Darimont, Anne ULg; Degeimbre, Robert ULg et al

in Shah, S. P. (Ed.) Self-Consolidating Concrete (2002)

The repair of concrete deck slabs or balcony needs a special composition of concrete and self-compacting concrete (SCS) is advantageously used for such repair operation in comparison with patch repair or ... [more ▼]

The repair of concrete deck slabs or balcony needs a special composition of concrete and self-compacting concrete (SCS) is advantageously used for such repair operation in comparison with patch repair or gunite. Two compositions of concrete (classical and SCC concretes) and two repair mortars are tested according to a new testing procedure. The penetration of SCC beneath the concrete plate structure but also the adhesion to the old concrete substrate are analysed. The rheology of the material is measured by means of usual tests and rheometer. The different materials have been characterised through physical, chemical and mechanical test program. Two types of applications (vertical and horizontal) are presented and commented. Analysis of the interface between concrete substrate and SCC is given on the base of pull-off test and microscopical observations. [less ▲]

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See detailDaily management of the transition to the future.
Goffinet, Nathalie ULg; Delvenne, Catherine ULg; Chalon, Patrice ULg et al

in Proceedings of the 8th European Conference of medical and Health Libraries, Köln, Septembre 16-21, 2002. (2002)

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See detailMicroscopic identification of complex MC, M2C, M7C3, M6C and M23C6 carbides in high-speed steels
Tchuindjang, Jérôme Tchoufack ULg; Lecomte-Beckers, Jacqueline ULg

in Proceedings of The International Conference Joint Microscopic Meeting (2002)

High-speed steels (HSS) rolls are used in front finishing stands of hot strip mills. Good wear resistance and hardness at high temperature are defining features of HSS. Many types of carbides are present ... [more ▼]

High-speed steels (HSS) rolls are used in front finishing stands of hot strip mills. Good wear resistance and hardness at high temperature are defining features of HSS. Many types of carbides are present in these alloys, each having different effect upon the final properties of HSS. As a result, nature, morphology and amount of these carbides are factors of important concern. Identification and characterisation of HSS carbides were realised with optical microscopy combined with electron microscopy. [less ▲]

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