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See detailLes rites sacrificiels dans la Périégèse de Pausanias
Pirenne-Delforge, Vinciane ULg

in Knoepfler, Denis; Piérart, Marcel (Eds.) Éditer, traduire, commenter Pausanias en l’an 2000 (2001)

Detailed reference viewed: 56 (1 ULg)
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See detailVers une pédagogie de la maîtrise en géométrie du premier degré par l'aplication de procédures d'évaluation formative : élaboration d'une typologie des erreurs des élèves en géométrie
Chenu, Florent ULg; Jehin, Monique ULg

in Le point sur la recherche en éducation en Communauté française : actes du 1er congrès des chercheurs en éducation, Université Libre de Bruxelles, Mai 2000 (2001)

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See detailSelf-adapting time integration strategies for non-linear structural dynamics
Noels, Ludovic ULg; Stainier, Laurent ULg; Ponthot, Jean-Philippe ULg

(2001)

Adaptive strategies are specially well suited to deal with problems characterized by high non-linearity and contact/impact. Constant step size strategies do not give a satisfactory answer for this kind of ... [more ▼]

Adaptive strategies are specially well suited to deal with problems characterized by high non-linearity and contact/impact. Constant step size strategies do not give a satisfactory answer for this kind of problems, since it is very difficult, if not impossible, for the user to find an appropriate time step that does not lead to divergence nor generate extremely costly computations. An automatic time stepping algorithm is proposed, which takes into account the recent history of accelerations in the (deformable) bodies under consideration. More precisely, the adaption algorithm is based on estimators of the integration error of the differential dynamic balance equations. This allows for adaptation of the step size to capture correctly the transient phenomena, with characteristic times which can range from relatively long (in regime) to very short (impact), thus ensuring precision while keeping the computation cost to a minimum. This algorithm is applicable both to implicit and explicit time integration schemes. Additionally, in the case of implicit schemes, the proposed algorithm automatically takes decisions regarding the necessity of updating the tangent matrix or stopping the iterations, further reducing the computational cost. This is specially true when the selective updating scheme is combined with the augmented Lagrangian procedure for the treatment of contact. As an illustration, numerical simulations of the buckling of an automobile stringer under crash impact are presented, demonstrating the versatility, the capabilities and the efficiency of the proposed strategy. [less ▲]

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See detailFinite element modeling of thermo-mechanical behaviour of a steel strand in continuous casting
Pascon, Frédéric ULg; Habraken, Anne ULg; Bourdouxhe, M. et al

in Habraken, Anne (Ed.) Proceedings of the 4th International Conference ESAFORM (2001)

Surface and internal quality of continuous cast products depends very much upon the behaviour of the strand in the mould. Among the parameters likely to influence this behaviour, the mould taper takes a ... [more ▼]

Surface and internal quality of continuous cast products depends very much upon the behaviour of the strand in the mould. Among the parameters likely to influence this behaviour, the mould taper takes a prominent part. In order to understand better the influence of this parameter, we have build up a thermo-mechanical finite element model. the model includes an elasto-visco-plastic law to describe the behaviour of steel from liquid to solid state, a thermo-mechanical element that takes into account thermal expansion and mechanical behaviour of the strand, a unilateral contact element, a mobile rigid boundary element to model the mould and its taper and an adapted loading element to model the ferrostatic pressure according to the liquid or solid state. [less ▲]

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See detailExperimental identification of a non-linear beam, proper othogonal decomposition
Lenaerts, Vincent; Kerschen, Gaëtan ULg; Golinval, Jean-Claude ULg

in International Conference on Structural Systems Identification, Kassel, 2001 (2001)

The aim of the paper is twofold

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See detailThe new integrated hydrological model MOHISE: construction, implementation and results
Carabin, G.; Brouyère, Serge ULg; Dassargues, Alain ULg et al

in Book of abstracts of the International Workshop on Catchment Scale Hydrologic Modeling and Data Assimilation (2001)

Detailed reference viewed: 149 (35 ULg)
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See detailApplication of the laser deflection to the study of temperature fields in two-dimensional flows
Cerisier, P.; Dauby, Pierre ULg

in Proceedings of the VI International science-technical conference, Optical methods of flows investigation (2001)

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See detailProtection fongicide du blé intégrée au mode de conduite de la culture: exemple de la Belgique
Bodson, Bernard ULg; Meeus, Patrick; Moreau, Jean-Marc et al

in Conférence internationale sur les maladies des plantes (2000, December 06)

Yields of wheat crop have increased by nearly 3T/ha during the last twenty years, due to amongst other things progressive transformation of the wheat plant. The grain filling phasis became preponderant in ... [more ▼]

Yields of wheat crop have increased by nearly 3T/ha during the last twenty years, due to amongst other things progressive transformation of the wheat plant. The grain filling phasis became preponderant in the yield elaboration of crops with 10 tons and more per hectare. Consequently it is necessary to adapt the way of crop growing, especially increasing nitrogen dressing at flat leave. The fungicide protection must be reasonned according to these evolutions and have as main objective to maintain the upper parts of the plant without disease. [less ▲]

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See detailA Near-IR [Fe II] line imaging survey of supernova remnants in M33
Morel, Thierry ULg; Doyon, R.; St-Louis, N.

in Proceedings 232. WE-Heraeus Seminar (2000, December 01)

We report on the first near-IR [Fe II] line imaging survey of extragalactic SNRs. Observations of a sample of 42 objects drawn from an optically-selected catalogue of SNRs in M33 provide evidence for a ... [more ▼]

We report on the first near-IR [Fe II] line imaging survey of extragalactic SNRs. Observations of a sample of 42 objects drawn from an optically-selected catalogue of SNRs in M33 provide evidence for a wide range in the [Fe II]λ 1.644 micron luminosities. This can be understood as being primarily due to variations in the chemical abundances and density of the local ISM, although shock conditions may also play a significant role. We briefly discuss how these results may be used to better calibrate the supernova rate of star-forming galaxies. [less ▲]

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See detailProtection fongicide intégrée au mode de conduire de la culture. Exemple de la Belgique
Bodson, Bernard ULg; Vancutsem, Françoise ULg; Falisse, André et al

in 6ème conférence internationale sur les maladies des plantes (2000, December)

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See detailComment évaluer des compétences en classe d'histoire ?
Jadoulle, Jean-Louis ULg; Bouhon, Mathieu; Dambroise, Catherine

in PAQUAY, Léopold (Ed.) L'évalution des compétences chez l'apprenant. Pratiques, méthodes et fondements (2000, November 22)

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See detailLa vidéogrammétrie en milieux hostiles
Roose, Stéphane ULg; Henrist, Marc; Sarti, Bruno et al

in Actes du premier colloque francophone SFO-CMOI: Méthodes et techniques optiques pour l’industrie (2000, November 21)

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See detailA homologous radioimmunoassay for quantification of insulin-like growth factor-binding protein-3 in blood from cattle.
Renaville, Robert ULg; Bertozzi, Carlo; Hornick, J. L. et al

in Proceedings of the 2nd Belgian Workshop on Animal Endocrinology. (2000, November 15)

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See detailRadioimmunoassay measurement of insulin-like growth factor-I in camels: effects of anticoagulants and body condition score in suckling female.
Hammadi, M.; Khorchani, T.; Moslah, M. et al

in Proceedings of the 2nd Belgian Workshop on Animal Endocrinology (2000, November 15)

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See detailAmplitude equations and thermoconvective rolls far from the threshold
Dauby, Pierre ULg; Desaive, Thomas ULg

in Proceedings of the 53rd annual meeting of the division of fluid dynamics of the American physical society (2000, November 01)

Amplitude equations are used to show that third order harmonics of a basic roll convective pattern can appear in the highly nonlinear régime of Rayleigh-Bénard thermoconvection. The phenomenon is induced ... [more ▼]

Amplitude equations are used to show that third order harmonics of a basic roll convective pattern can appear in the highly nonlinear régime of Rayleigh-Bénard thermoconvection. The phenomenon is induced by the nonlinear interaction of the roll pattern with its second order harmonics, which were first generated by the quadratic nonlinearity due to the convective terms of the time derivatives in the field equations. Good qualitative agreement with experimental data is obtained with only 4 amplitude equations. More precise quantitative results are deduced by increasing the number of amplitude equations. Comparison with purely numerical calculations is also discussed. [less ▲]

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See detailFemmes et Hommes en entreprise : quels fondements normatifs pour la GRH ?
Rondeaux, Giseline ULg

in Actes du Xe colloque de l’AGRH (2000, November)

Colloque -

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See detailSerotype distribution of invasive Streptococcus agalactiae isolated from neonates and adults in Belgium over a 4-year period (1995-1999)
MELIN, Pierrette ULg; De Mol, Patrick ULg

in Martin, Diana R.; Tagg, John R. (Eds.) Streptococci and Streptococcal Diseases Entering the New Millenium - Proceeding of the XIV LISSSD (2000, November)

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See detailAntimicrobial Susceptibility of Streptococcus agalactiae Isolated from Patients in Belgium Through 1989-1991 and 1996-1999
MELIN, Pierrette ULg; Rodriguez Cuns, Grisel; Vincento Fernandez, Walter et al

in Martin, Diana R.; Tagg, John R. (Eds.) Streptococci and Streptococcal Diseases Entering the New Millenium - Proceeding of the XIV LISSSD (2000, November)

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See detailLBR-5, a Ship Hull Optimization Tool
Rigo, Philippe ULg; Hage, André ULg

in SIMOUEST’2000, European Conference, Marine Technology (2000, November)

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See detailInteractive tool aiding the actors involved in a building project, to sketch the envelope during the preliminary stages of the design, while taking into account their own objectives, in a multicriteria and multiactors approach
Hauglustaine, Jean-Marie ULg

in Mangin, Jean-Claude; Miramond, Marcel (Eds.) 2e conférence internationale sur l'Aide à la Décision dans le domaine Génie Civil et Urbain (2000, November)

The present study has for objective to introduce, during the sketch design, a rational method of aiding to design the envelope of a building, targeting the respect of costs (for the construction and in ... [more ▼]

The present study has for objective to introduce, during the sketch design, a rational method of aiding to design the envelope of a building, targeting the respect of costs (for the construction and in use of the building) and the improvement of the energy performance of the project. In respect of the multicriteria and multiactors context of any building project, an interactive tool is being developed, which is using decision-making aids, in order to improve the architectural response to the client’s and regulations requirements, while aiding; - the client: in the expression of his requirements and in his participation to the multiple partners negotiation; - the project authors: in their elaboration of the parametric and graphic forces of the architectural project, they can develop in accordance with the actors’ objectives. Permanently informed about the project performances, the user may go, as he pleases, in the parametric or in the graphic module, in order to reach the most preferred compromise. [less ▲]

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See detailMesure de vibrations par holographie dynamique multi-expositions
Georges, Marc ULg; Thizy, Cédric ULg; Lemaire, Philippe et al

in Actes du Premier colloque francophone Méthodes et Techniques Optiques pour l'Industrie (2000, November)

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See detailALPS/ULSAP Software for Ultimate Strength Design of Steel Grillages under Combined Loads
Rigo, Philippe ULg; Toderan, C.; Hughes et al

in SIMOUEST’2000, European Conference, Marine Technology (2000, November)

Detailed reference viewed: 109 (2 ULg)
See detailLes déchirures des muscles ischio-jambiers chez le footballeur : évaluation, prévention, entraînement
Croisier, Jean-Louis ULg

in Actes du 2ème Congrès Européen Olympique de la Kinésithérapie et de la Médecine du Sport (2000, November)

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See detailAre Cities of Northern Europe at Risk ?
Plumier, André ULg; Jongmans, Denis

in Proceedings of the Workshop Mitigation of Seismic Risk - Support to recently Affected European Countries (2000, November)

A benchmark study on seimic risk has been realised on Liege, Belgium, at the request of the Regional Authority. Its main interest is that it deals with the seismic risk of a city in a low seismicity ... [more ▼]

A benchmark study on seimic risk has been realised on Liege, Belgium, at the request of the Regional Authority. Its main interest is that it deals with the seismic risk of a city in a low seismicity region. The work involves a hazard study based on the recently defined map of seismicity of Belgium, the definition of the individual vulnerability of buildings, the combination of hazard and vulnerability to define risk and static evaluations of connecting details in non engineered structures. For the evaluation of vulnerability, a simplified screening method has been defined. The main conclusion is that in regions where the Peak Ground Acceleration is higher than 0,1g and the building stock does not possess good structural quality, the seismic risk may be considered high. [less ▲]

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See detailLa détection des signaux financiers annonciateurs de faillite en contexte PME : une approche méthodologique spécifique
Van Caillie, Didier ULg

in AIREPME (Ed.) Actes du 5ème Congrès International Francophone sur la PME (2000, October 26)

This paper proposes and discusses a structured and coherent methodology allowing to build up early warning business failure prediction models that are really able to incorporate the specificites of the ... [more ▼]

This paper proposes and discusses a structured and coherent methodology allowing to build up early warning business failure prediction models that are really able to incorporate the specificites of the financial data published by SMEs. [less ▲]

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See detailThe isotope ratios [SUP]12[/SUP]C/[SUP]13[/SUP]C and [SUP]14[/SUP]N/[SUP]15[/SUP]N in comet C/1995 O1 (Hale-Bopp)
Arpigny, Claude ULg; Schulz, R.; Manfroid, Jean ULg et al

in Bulletin of the American Astronomical Society (2000, October 01)

The abundance ratios of stable isotopes of the light elements in comets may provide clues of cosmogonical significance. Measuring isotopic ratios in an optical cometary spectrum is, however, a rather ... [more ▼]

The abundance ratios of stable isotopes of the light elements in comets may provide clues of cosmogonical significance. Measuring isotopic ratios in an optical cometary spectrum is, however, a rather difficult task for different reasons. Such measurements require, in particular, very high spectral resolution and are feasible so far only on bright objects. In 1997 we observed comet Hale-Bopp with the 2.6 m Nordic Optical Telescope on La Palma, Canary Islands, with a view to estimating the [SUP]12[/SUP]C/[SUP]13[/SUP]C abundance ratio. About twenty high-resolution (λ /Πλ ~ 70000) spectra of the strong CN Violet (0,0) band were secured with the SOFIN spectrograph from 7 to 13 April. The heliocentric and geocentric distances of the comet were then close to 0.9 AU and 1.4 AU, respectively. While the data do show the expected lines of the [SUP]13[/SUP]C[SUP]14[/SUP]N isotopic molecule, we have been surprised to find in addition a number of very weak features, which are real and turn out to be positioned very near to the theoretical wavelengths of lines pertaining to the R branch of [SUP]12[/SUP]C[SUP]15[/SUP]N. After a short description of the reduction and analysis of the data our paper discusses the results derived for [SUP]12[/SUP]C/[SUP]13[/SUP]C and [SUP]14[/SUP]N/[SUP]15[/SUP]N as well as their possible implications. We also present a brief review of the carbon and nitrogen isotopic ratios in various solar system objects and consider the question whether any nucleosynthesis site(s) is (are) known where pairs of values similar to those we measure in comet Hale-Bopp could be produced. [less ▲]

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See detailHST/STIS Observations of a Dawn Auroral Storm on Jupiter
Clarke, J. T.; Gladstone, R.; Pryor, W. et al

in Bulletin of the American Astronomical Society (2000, October 01)

The HST/STIS recorded a detailed time series of images and spectra of the UV emissions from a dawn auroral storm on Jupiter on 21 Sept. 1999. The images show complex and evolving fine structure in the ... [more ▼]

The HST/STIS recorded a detailed time series of images and spectra of the UV emissions from a dawn auroral storm on Jupiter on 21 Sept. 1999. The images show complex and evolving fine structure in the storm, while the emission center remained along the main oval and near dawn in magnetic local time. We serendipitously recorded low resolution UV spectra of the north-south spatial distribution of the auroral emissions. These spectra show far stronger hydrocarbon absorptions than observed in any previous auroral spectra. This indicates an unusually deep penetration of the incident primary particles with respect to the neutral atmosphere, and correspondingly high energy of the primary particles. We can thus use these spectra to identify many complex hydrocarbons in Jupiter's auroral atmosphere which are not normally measured in auroral spectra. These results will be presented along with model fits to the spectra derived both from fitting the observed hydrocarbon absorption features and from comparison with a photochemical model for the expected composition of the auroral atmosphere. This research has been supported by grant GO-8171.01-97A from the Space Telescope Science Institute to the University of Michigan. [less ▲]

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See detailA fluorescence model of the C[SUB]3[/SUB] radical in comets
Rousselot, P.; Arpigny, Claude ULg; Rauer, H. et al

in Bulletin of the American Astronomical Society (2000, October 01)

The fluorescence spectrum of the C[SUB]3[/SUB] radical in comets is investigated. A theoretical model which takes into account the rotational structure and the different vibrational levels of the bending ... [more ▼]

The fluorescence spectrum of the C[SUB]3[/SUB] radical in comets is investigated. A theoretical model which takes into account the rotational structure and the different vibrational levels of the bending mode ν [SUB]2[/SUB] involved in the emision of the 4050 à \ group, is elaborated. This model is used to interpret high-resolution spectra of some recent comets. The agreement between observed and theoretical spectra is satisfactory with some realistic assumptions on the electronic oscillator strength and the dipole moment derivative, which determine the relative importance of the rotation-vibration transitions. Different synthetic spectra which show the influence of the Swings effect and the consequences of the change in the heliocentric distance are also calculated and are presented. [less ▲]

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See detailAdaptive Applications over Active Networks: Case Study on Layered Multicast
Yamamoto, Lidia; Leduc, Guy ULg

in IP Networks Versus conventional Switched Networks (2000, October)

In this paper we study the potential and limitations of active networks in the context of adaptive applications. We present a survey of active networking research applied to adaptive applications, and a ... [more ▼]

In this paper we study the potential and limitations of active networks in the context of adaptive applications. We present a survey of active networking research applied to adaptive applications, and a case study on a layered multicast active application. This active application is a congestion control protocol that selectively discards data in the active routers, and prunes multicast tree branches affected by persistent congestion. Our first results indicate that active networks can indeed help such an application to adapt to heterogeneous receivers, with a minimum amount of state overhead, equivalent to that of a single IP multicast group. [less ▲]

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See detailCombinatorial optimization approaches to the design of load shedding schemes against voltage instability
Moors, Cédric; Lefebvre, Daniel; Van Cutsem, Thierry ULg

(2000, October)

This paper proposes a methodology for the design of automatic load shedding against long-term voltage instability. In a first step, a set of training scenarios is set up, corresponding to various ... [more ▼]

This paper proposes a methodology for the design of automatic load shedding against long-term voltage instability. In a first step, a set of training scenarios is set up, corresponding to various operating conditions and disturbances. Each scenario is analyzed to determine the minimal load shedding which stabilizes the system, with due consideration for the shedding location and delay. In a second step, the parameters of a closed-loop undervoltage load shedding scheme are determined so as to: (i) approach as closely as possible the optimal sheddings computed in the first step, over the whole set of scenarios; (ii) stabilize the system in all the unstable scenarios and (iii) shed no load in the stable ones. The corresponding optimization problem is solved using three methods : genetic algorithms, branch and bound approach and the so-called “sequential design”. A detailed example is given on the Hydro-Qu´ebec system in which load shedding is presently planned. [less ▲]

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See detailA clinical study of the efficacy and safety of caninsulin in cats with uncomplicated diabetes mellitus: preliminary results
Clercx, Cécile ULg; Michiels, L.

in 10th ESVIM Meeting - Neuchatel - Suisse (2000, October)

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See detailUn ordonnanceur assurant des services différenciés relatifs basés sur le délai
Jennes, Geoffroy; Leduc, Guy ULg; Tufail, Mudassir

in Courtiat, Jean-Pierre; Diaz, Michel; Sénac, Patrick (Eds.) Qualité de Service, multimédia et mobilité (2000, October)

Nous proposons l'ordonnanceur RD-VC garantissant des services différenciés (DiffServ) relativement quantifiés basés sur le délai. Un tel ordonnanceur assure que différentes classes de service obtiennent ... [more ▼]

Nous proposons l'ordonnanceur RD-VC garantissant des services différenciés (DiffServ) relativement quantifiés basés sur le délai. Un tel ordonnanceur assure que différentes classes de service obtiennent des délais inversement proportionnels à des indices de qualité fixés, quelle que soit la charge du réseau, et sans signalisation, ni contrôle d'admission. De plus, bien que cet algorithme ne s'applique qu'aux classes de services, les délais relatifs sont également respectés pour chaque flux composant ces agrégats. Ceci permet d'assurer des qualités de service au niveau des (micro)flux sans que leur grand nombre ne conduise à un effondrement du système. L'algorithme offre de bonnes performances tout en étant très peu coûteux : le traitement par paquet est très léger et il n'est même pas nécessaire de disposer d'une file d'attente par classe de service. [less ▲]

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See detailHormonal, metabolic and structural investigation in a conscious canine model of early heart failure induced by rapid right ventricular pacing
Mc Entee, Kathleen ULg; Clercx, Cécile ULg; Dessy, C. et al

in 10th ESVIM Meeting - Neuchatel - Suisse - Octobre 2000 (2000, October)

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See detailContribution à l’étude de la fonction musculaire du sujet fibromyalgique
Maquet, Didier ULg; Croisier, Jean-Louis ULg; Renard, Cindy ULg et al

in Actes du symposium « Evidence Based Physiotherapy » de la Fédération Nationale des Docteurs et Licenciés en Kinésithérapie (2000, October)

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See detailHydrodechlorination of 1,2-dichloroethane into ethylene : selectivity of Pd-Ag alloys of known surface composition
Heinrichs, Benoît ULg; Lambert, Stéphanie ULg; Schoebrechts, Jean-Paul et al

in Heterogeneous Catalysis, Proceedings of the 9th International Symposium (2000, September 23)

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See detailLe froment d'hiver
Couvreur, Luc; Bodson, Bernard ULg; Vancutsem, Françoise ULg et al

in Livre Blanc: Céréales - Gembloux - Informations avant les semis (2000, September 14)

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See detailEscourgeon et Orge d'hiver fourragers
Bodson, Bernard ULg; Herman, Jean-Luc; Monfort, Bruno et al

in Livre Blanc: Céréales - Gembloux - Informations avant les semis (2000, September 14)

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See detailAperçu de la qualité des froments d'hiver en 2000
Sinnaeve, Georges; Herman, Jean-Luc; Couvreur, Luc et al

in Livre Blanc: Céréales - Gembloux (2000, September 14)

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See detailUserfriendly and compact holographic camera based on photorefractive crystals. Applications in high accuracy metrology
Lemaire, Philippe; Scauflaire, Véronique; Georges, Marc ULg

in Jacquot, Pierre; Fournier, Jean-Marc (Eds.) Interferometry in Speckle Light. Theory and Applications. Proceedings of the International Conference (2000, September)

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See detailLeast Cost and Scantling Optimization at the initial Design Stage of Ships
Rigo, Philippe ULg; Toderan, Catalin

in ICETECH 2000 (2000, September)

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See detailRapid intrapartum test (Strep B OIA) and prenatal cultures for identification of group B streptococcal carriers at delivery: a prospective study
MELIN, Pierrette ULg; Schmitz, Myriam; Tsobo, Chantal et al

in AAmerican Society of Microbiology (Ed.) Program and Abstracts of the 40th Intersciences Conference on Antimicrobial Agents and Chemotherapy (2000, September)

Background: The efficacy of the prenatal screening-based approach recommended by the CDC to prevent neonatal GBS diseases could be improved by using a good rapid test performed at the onset of labor. To ... [more ▼]

Background: The efficacy of the prenatal screening-based approach recommended by the CDC to prevent neonatal GBS diseases could be improved by using a good rapid test performed at the onset of labor. To assess the Strep B OIA® test (Biostar, Boulder, Co), completed in 30 minutes, we initiated a 6-center study to compare it with prenatal screening cultures to identify GBS carriers at delivery or opportunities to initiate intrapartum antibioprophylaxis (IAP). Methods: For a total of 539 pregnant women included in the study, pairs of vaginal/anal specimens collected at 35-37 weeks and intrapartum vaginal specimens were plated onto colistin-nalidixic agar and then inoculated into selective LIM broth for the detection of GBS. Furthermore, on each intrapartum vaginal swab a Strep B OIA test was performed. Results: GBS were recovered in culture from 89 prenatal screenings (17%) and from 71 specimens collected at delivery (13%). Strep B OIA test identified 48 positive specimens (9%). Respectively, for the identification of GBS carriers at delivery, sensitivity, specificity, positive and negative predictive values for prenatal screening cultures were 69%, 91%, 55% and 95% and for Strep B OIA tests they were 63%, 99%, 94% and 95%. Evaluating opportunities to start an IAP, based on Strep OIA test versus prenatal screening cultures, 45 IAP vs. 49 would have been useful, 3 vs. 40 useless (P< 0,001) and 26 vs. 22 missed. Conclusion: To identify GBS carriers, the Strep B OIA test, performed at the time of onset of labor is equally sensitive to prenatal screening cultures and would allow a highly significant reduction of useless IAP. [less ▲]

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See detailEvaluation isocinétique des muscles rotateurs externes et internes de l’épaule après transfert coracoïdien. Influence de la ténotomie du sous-scapulaire.
Willems, S.; Berger, J. P.; Houben, G. et al

in Proceedings of the 14th Congress of the European Society for Surgery of the Shoulder and the Elbow (2000, September)

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See detailPrevention of neonatal group B streptococcal disease in Belgium: hospital policy, obstetricians' practice and laboratory processing
MELIN, Pierrette ULg; Schmitz, Myriam; Heinrichs, I. et al

in American Society of Microbiology (Ed.) Program and Abstracts of the 40th Intersciences Conference on Antimicrobial Agents and Chemotherapy (2000, September)

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See detailOn the link between design against fatigue and fracture mechanics
Debongnie, Jean-François ULg

in ASME (Ed.) Proceedings of the 2000 ASME Design Engineering Technical Conferences (2000, September)

The gradient method, often used in design against fatigue, is analyzed from the point of view of its link with fracture mechanics. By a logical step, a law is deduced for the variation of the endurance ... [more ▼]

The gradient method, often used in design against fatigue, is analyzed from the point of view of its link with fracture mechanics. By a logical step, a law is deduced for the variation of the endurance limit in terms of the relative stress gradient. The proposed expression is found to be in good agreement with older ones and may easily be extended to a large class of materials. [less ▲]

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See detailALE Methods for Determining Stationary Solutions Metal Forming Processes
Boman, Romain ULg; Ponthot, Jean-Philippe ULg

in Oñate, E.; Bugeda, G.; Suárez, B. (Eds.) Proceedings of ECCOMAS 2000/COMPLAS VI, European Congress on Computational Methods in Applied Sciences and Engineering (2000, September)

In this paper, two efficient convection algorithms are briefly presented in order to update the values stored at the Gauss point during the Eulerian step of an Arbitrary Lagrangian Eulerian computation in ... [more ▼]

In this paper, two efficient convection algorithms are briefly presented in order to update the values stored at the Gauss point during the Eulerian step of an Arbitrary Lagrangian Eulerian computation in solid mechanics. They are based on the finite volume method and on the Streamline Upwind Petrov Galerkin method. Two applications are presented : a cold rolling simulation and a drawbead simulation. [less ▲]

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See detailArbitrary Lagrangian Eulerian Method for the Simulation of Lubricated Contact between Solids in Metal Forming Processes
Boman, Romain ULg; Ponthot, Jean-Philippe ULg

in Pietryk, Maciej; Kusiak, Jan; Majta, Janusz (Eds.) et al Metal Forming 2000 (2000, September)

Detailed reference viewed: 20 (12 ULg)
See detailPsychological models to explain/predict first year university students’success. The profile of the University of Piraeus’ student: his/her difficulties and expectations Edinburgh: Heriot-Watt University.
Broonen, Jean-Paul ULg; Kounenou, Kalliopi

in Dane, Margaret (Ed.) VIIth FEDORA Congress FEDORA 2000 Fit for the future: Managing a changing world (2000, August)

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See detailApplication of the Stiffened Plate Method in Optimizing Hydraulic Structures
Rigo, Philippe ULg; NGuyen, Nhy jhuynh

in International Colloquium in Mechanics of Solids, Fluids, Structures and Interactions (2000, August)

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See detailRelation between convective drying kinetics and shrinkage of wastewater treatment sludges
Léonard, Angélique ULg; Crine, Michel ULg

in Kerkhof, P.J.A.M.; Coumans, W. J.; Mooiweer, G. D. (Eds.) Proceedings of the 12th International Drying Symposium, Ids2000, Noordwijkerhout, the Netherlands, 28-31, August 2000 (CD-ROM) (2000, August)

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See detailRevisiting early works of the aerospace laboratory of Liège. Dual analysis, 60's and 70's
Debongnie, Jean-François ULg; Beckers, Pierre ULg

in Nguyen-Dang, Hung; Ronday, François; Nguyen, Van Diep (Eds.) Proceeding of the International colloquium in mechanics of solids, fluids, structures and interactions (2000, August)

The goal of this presentation is to describe the main scientific contribution of the Aerospace Laboratory of the Liège University (LTAS) during the sixties and seventies. This period was very important ... [more ▼]

The goal of this presentation is to describe the main scientific contribution of the Aerospace Laboratory of the Liège University (LTAS) during the sixties and seventies. This period was very important for the development of the finite element techniques and the major part of the concepts and the algorithms were defined at that time. The contribution of the LTAS was especially original because it was the only team in the world who was proposing the dual method and included it in a Finite Element code for all the applications : bar, membrane and plates, using for both types of models the same displacement solution algorithm. After the presentation of this method a short description is made about recent improvements proposed by the authors. [less ▲]

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See detailMutation in exon 5 of bovine prolactin gene is not associated with milk traits in Holstein bulls.
Parmentier, Isabelle; Gengler, Nicolas ULg; Laliberte, P. et al

in ASAS/ADSA Joint Meeting (2000, July)

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See detailOn-line fruit grading according to external quality using machine vision.
Leemans, Vincent ULg; Magein, Hugo ULg; Destain, Marie-France ULg

in AgEng Warwick 2000 - Abstract part 1 - Agricultural engineering into the third millennium (2000, July)

This paper presents apple grading into four classes according to European standards. Two varieties were tested, the Golden delicious and the Jonagold. The image database included more than thousand images ... [more ▼]

This paper presents apple grading into four classes according to European standards. Two varieties were tested, the Golden delicious and the Jonagold. The image database included more than thousand images of fruits (528 Golden, 642 Jonagold) belonging to three categories Extra, I, II and to reject. The image grading was achieved in six steps : the image acquisition, the ground colour classification, the defect segmentation, the calyx and stem recognition, the defects characterisation and finally the fruit classification in quality classes. The proposed method for apple external quality grading showed correct classification rates of 78 and 72% respectively for Golden delicious and for Jonagold apples. Taking into account that the healthy fruits were far better graded and considering that this class was under represented, the results of the proposed method (an error rate reaching respectively 5 and 10%) are compatible with the requirements of the European standards. [less ▲]

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See detailMuscle damage induced by concentric fatigue protocol. Comparative study between males and females
Croisier, Jean-Louis ULg; Maquet, Didier ULg; Camus, Gérard et al

in Proceedings of the 5th Annual Congress of the European College of Sport Science (2000, July)

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See detailA Soil Mechanical Resistance Sensor For On-Line Application In Precision Agriculture: Soil Strength Mapping And Correlation With Soil Physical Properties
Sirjacobs, Damien ULg; Destain, Marie-France ULg

in Proceedings of the 15th Conference of the International Soil Research Organization (I.S.T.R.O.) (2000, July)

Knowledge of local soil strength variation may permit variation of tillage parameters to produce a more optimal soil structure for root growth and plant development. Soil strength mapping can provide ... [more ▼]

Knowledge of local soil strength variation may permit variation of tillage parameters to produce a more optimal soil structure for root growth and plant development. Soil strength mapping can provide another layer of information in precision agriculture. The aim of this research is to develop a sensor able to measure on-line the local soil strength variations. This sensor is designed as follows: a thin blade penetrates the soil to a specific depth while the machine is moving, a beam transfers the soil-blade forces to a transducer fixed on the machine. The transducer measures then the horizontal and vertical forces and the moment. This paper describes a field experiment performed in a 2 ha field of silt soil (Hesbaye, Belgium). The first objective of this research is to establish a map of soil strength variability of the field. For this purpose, the sensor is pulled through the soil in parallel traverses at 5 m separation by a tractor equiped with a DGPS receiver. The second objective of the experiment is to study relation between measured forces and several measured soil physical parameters. Ten homogeneous plots where identified on the sensor track in order to cover as completely as possible the diversity of soil physical conditions encountered. On the median line of each of those plots, 10 Cone Index penetrometry profiles were measured with a mobile automated penetrometer recorder, soil water content was measured in 5 points, ans soil samples were taken in the center of the plot to determine the following parameters: cohesion and internal friction angle, simple compression resistance, Atterberg's limits, granulometry and pF curves. This experiment allowed the first identification of different soil strength areas in the field investigated. [less ▲]

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See detailUse of photorefractive materials for holographic recording : From crystal study to camera device in view of applied holographic interferometry
Lemaire, Philippe ULg; Georges, Marc ULg

in Lessard, Roger; Lampropoulos, George (Eds.) Applications of Photonic Technology 4 (2000, June)

We present a holographic camera based on a photorefractive crystal. A first prototype instrument has been studied and built on the basis of a broad optimization study. Some applications in high accuracy ... [more ▼]

We present a holographic camera based on a photorefractive crystal. A first prototype instrument has been studied and built on the basis of a broad optimization study. Some applications in high accuracy displacement/deformation metrology are presented. This first instrument generation was not completely portable and flexible of use. For that reason, a compact device has been designed and is presented. New applications of this holographic camera are shown. All theses achievements show the versatility and flexibility of utilization, as well as the high degree of user-friendliness, of a photorefractive crystal based holographic camera. Future prospects are then discussed [less ▲]

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See detailLateral Torsional Buckling of Steel I-Beams in Case of Fire – Numerical Modelling
Vila Real, paulo; Franssen, Jean-Marc ULg

in Franssen, Jean-Marc (Ed.) Proc. 1rst int. Structures in Fire workshop (2000, June)

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See detailOptimal heating control in a passive solar commercial building
Kummert, M.; Andre, Philippe ULg; Nicolas, Jacques ULg

in Proceedings EuroSun'2000 Congress (2000, June)

A smart heating controller has a twofold objective: to save as much energy as possible while maintaining an acceptable comfort level in the building. Due to very large time constants in the building ... [more ▼]

A smart heating controller has a twofold objective: to save as much energy as possible while maintaining an acceptable comfort level in the building. Due to very large time constants in the building response, it has to anticipate internal and external disturbances. In the case of a passive solar commercial building, the need for anticipation is reinforced by important solar and internal gains. Indeed, large solar gains increase the energy savings potential but also the overheating risk. Optimal control theory presents an ideal formalism to solve this problem : its principle is to anticipate the building behaviour using a model and a forecasting of the disturbances in order to compute the control sequence that minimises a given cost function over the optimisation horizon. This cost function can combine comfort level and energy consumption. This paper presents the application of optimal control to auxiliary heating of a passive solar commercial building. Simulation-based and experimental results show that it can lead to significant energy savings while maintaining or improving the comfort level in this type of building. [less ▲]

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See detailDesign of concrete columns based on EC2 tabulated data – A critical review
Franssen, Jean-Marc ULg

in Franssen, Jean-Marc (Ed.) Proc. 1rst int. Structures in Fire workshop (2000, June)

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See detailDévelopper des compétences "historiennes" en classe d'histoire
Jadoulle, Jean-Louis ULg

in Actes du Ier Congrès des chercheurs en éducation. Le point sur la recherche en éducation en Communauté française (2000, May 24)

Detailed reference viewed: 46 (11 ULg)
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See detailReversible Destiny and the Poetic Subject: The Art of Madeline Gins and Arakawa
Delville, Michel ULg

in Dworkin, Craig (Ed.) Architextures of Poetry (2000, May 19)

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See detailOn the dynamic stability of Saturn's F ring
Poulet, F.; Jancart, Sylvie ULg

in Bulletin of the American Astronomical Society (2000, May 01)

We explore the dynamics of Saturn's F ring by following the orbital histories of circumplanetary particles between the orbits of Prometheus and Pandora. Our goal is to find structures that could be ... [more ▼]

We explore the dynamics of Saturn's F ring by following the orbital histories of circumplanetary particles between the orbits of Prometheus and Pandora. Our goal is to find structures that could be related to the F ring. Using a 3-D mapping integrator developped by Sicardy and Foryta (1996), we follow the behavior of several thousand test particles distributed unformly between 140,000 and 140,400 km in order to acquire a general picture of the dynamics of this zone. The model includes the gravitational effects of Saturn (up to J[SUB]4[/SUB]) and the two shepherd satellites. The numerical simulations show chaotic behaviors of the particles resulting in a close encounter with one or the other of the satellites, which deplete the zone between the satellites. The timescale over which particles are removed by the satellites is of order a ten thousand years. After a hundred thousand years, some particles exist but they are not related to the actual four strands of the F ring. As suggested by Cuzzi and Burns (1988), these simulations indicate that this ring may be a transient event occuring at the edge of the Roche limit. However, taking into account dissipation (collisions, viscosity) might help to explain the longevity and the location of this ring. This work was performed while the author held a National Research Council - NASA ARC Research Associateship. [less ▲]

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See detailAn advanced tool for Preventive Voltage Security Assessment
Van Cutsem, Thierry ULg; Capitanescu, Florin ULg; Moors, Cédric et al

(2000, May)

This paper deals with methods for the preventive assessment of voltage security with respect to contingencies. We describe a computing tool for the determination of secure operation limits, together with ... [more ▼]

This paper deals with methods for the preventive assessment of voltage security with respect to contingencies. We describe a computing tool for the determination of secure operation limits, together with methods for contingency filtering. Examples from two very different real-life systems are provided. We outline extensions in the field of preventive control. [less ▲]

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See detailLearn-Nett : une expérience d'apprentissage collaboratif à distance
Denis, Brigitte ULg; Peeters, Robert

in Actes du 1er congrès des chercheurs francophones en éducation (2000, May)

Présentation du dispositif d'apprentissage collaboratif (Learn-Nett).

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See detailDes outils pour évaluer les compétences transversales
Hubert, Sylvianne; Denis, Brigitte ULg

in Actes du 1er congrès des chercheurs en éducation (2000, May)

La problématique de l’évaluation des compétences transversales est au centre des préoccupations actuelles. Alors que de nombreuses méthodes d’évaluation des compétences disciplinaires existent et sont ... [more ▼]

La problématique de l’évaluation des compétences transversales est au centre des préoccupations actuelles. Alors que de nombreuses méthodes d’évaluation des compétences disciplinaires existent et sont usitées par les enseignants (interrogations au moyen de questions ouvertes, de QCM, examens oraux, …, Leclercq (1999), de Landsheere (1992)), l’évaluation des compétences transversales pose davantage de problèmes car, d’une part, la collecte d’informations permettant de juger de l’acquisition de ces compétences chez les élèves est plus délicate (elle nécessite souvent l’observation des élèves au cours de l’activité d’apprentissage, et ce au moyen de grilles d’observation (Denis, 1990)) ; d’autre part, l’acquisition des compétences transversales doit être envisagée à long terme et, par conséquent, leur évaluation doit se faire de manière continue et progressive. Une enquête réalisée auprès de 98 professeurs du cours d’Education par la Technologie1 révèle que 43% d’entre eux disent éprouver des difficultés pour apprécier l’acquisition de ces compétences chez leurs élèves (Hubert, Pauwen & Denis, 1997). De juillet 1997 à juin 1998, le Service de Technologie de l’Education de l’Université de Liège a été chargé par le Ministère de la Communauté française de mettre au point des outils permettant l’évaluation de ce type de compétences (Hubert, Bosmans & Denis, 1998). Cette recherche avait pour objectif de fournir aux enseignants du cours d’Education par la Technologie (ET) des méthodes et des moyens didactiques diversifiés pour évaluer les compétences transversales de leurs élèves lors d’activités de résolution de problèmes, mais aussi d’imaginer un système intégrant ces outils. Actuellement, l’évaluation de ces compétences fait également l’objet d’une réflexion dans le contexte de l’utilisation pédagogique d’Internet où les élèves sont amenés à réaliser, en groupe, un projet au moyen des potentialités offertes par Internet (Hubert, Detroz, Demily & Denis, 1999). Nous allons détailler, ici, les principes de base, les composantes principales et les modalités du système d’évaluation construit dans le cadre du cours d’ET. Nous tenterons d’attirer l’attention du lecteur sur les aspects méthodologiques qu’il convient d’annoncer à l’enseignant (et aux élèves). [less ▲]

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See detailLa résistance mécanique du sol: mesure en continu et cartographie pour l’agriculture de précision
Sirjacobs, Damien ULg; Destain, Marie-France ULg

in Zwaenepoel, Philippe (Ed.) Agriculture de Précision - Avancées de la recherche technologique et industrielle (2000, May)

La résistance mécanique d'un sol est un paramètre important qui conditionne la croissance racinaire et le développement des plantes. L'objectif de cette recherche est de mettre au point un capteur capable ... [more ▼]

La résistance mécanique d'un sol est un paramètre important qui conditionne la croissance racinaire et le développement des plantes. L'objectif de cette recherche est de mettre au point un capteur capable de mesurer en ligne les variations locales de résistance du sol. Celui-ci est constitué d'un anneau dynamométrique qui enregistre automatiquement les sollicitations (forces horizontales, verticales et couple) générées par la traction uniforme d'un lame dans le sol. Une première expérience a été menée dans un champ limoneux situé en Hesbaye (Belgique). Le géocodage de ces informations via un système DGPS a permis d'identifier des zones de diverses résistance au sein de la parcelle étudiée. [less ▲]

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See detailFully and Partially Reusable TSTO launchers using In-Flight LOX Collection
Hendrick, Patrick; Breugeulmans, F.; Marquet, B. et al

in 22nd International Symposium on Space Technology and Science (ISTS) (2000, May)

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See detailShort chain fructo-oligosaccharides (SC FOS) in hyperlipidaemic dogs
Diez, Marianne ULg; Grauwels, Magda ULg; Jeusette, I. et al

in Abstracts of Dietary Fibre 2000 (2000, May)

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See detailALE Update Procedures for Stationary Solutions of Metal Forming Processes
Boman, Romain ULg; Ponthot, Jean-Philippe ULg

in Proceedings of the 5th National Belgian Congress on Theoretical and Applied Mechanics (2000, May)

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See detailLocation of protection zones along production galleries : an example of methodology
Hallet, Vincent; Nzali, Timothée; Rentier, Céline et al

in Dassargues, Alain (Ed.) Tracers and Modelling in Hydrogeology (2000, May)

Detailed reference viewed: 27 (4 ULg)
See detailPhytoremediation of persistent organic pollutant in soils: study of the absorption mechanism in two cucurbitacean species and future applications
Campanella, Bruno ULg; Paul, Roger ULg

in Kaltsikes, P.J. (Ed.) Phytoremediation 2000 State of the art in Europe (2000, April 06)

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See detailNumerical Modelling of the Forging Process of Rolls for Rolling Mills
Castagne, S.; Charles; Habraken, Anne ULg et al

in Proceedings of the 2nd International Conference on forging and related technology (2000, April)

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See detailPulmonary Function Testing in Cattle: application of nuclear scintigraphy to evaluation of pulmonary function
Votion, Dominique ULg

in Pulmonary function in cattle (2000, April)

In contrast to other imaging techniques, scintigraphy provides information about the physiology of the lung rather than anatomical observations. As opposed to other pulmonary function tests, scintigraphy ... [more ▼]

In contrast to other imaging techniques, scintigraphy provides information about the physiology of the lung rather than anatomical observations. As opposed to other pulmonary function tests, scintigraphy provides regional evaluation instead of global measurement of lung function. This non-invasive imaging technique improves knowledge of the pathophysiologic processes involved in respiratory disorders. Furthermore, it is a sensitive method to early diagnosis of inflammatory process. It is also an unique tool to study the deposition of therapeutic aerosol within the respiratory tract. [less ▲]

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See detailA case of nasal aspergillosis associated with an impacted canine tooth in a Belgian Shepherd dog
Saunders, J.; van Bree, H.; Clercx, Cécile ULg et al

in FECAVA Meeting - Amsterdam - Nederland - Avril 2000 (2000, April)

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See detailCanine nasal aspergillosis : CT findings in 25 patients
Sanders, J.; Zonderland, J. L.; Gielen, I. et al

in 43rd BSAVA Annual Congress (2000, April)

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See detailVérification de la validité du test kinésiologique de Meersman par des mesures isocinétiques
Fernandez-Moreno, S.; Croisier, Jean-Louis ULg; Lamy, Maurice ULg et al

in Actes des 17èmes Journées Internationales du Collège National d’Occlusodontologie (2000, March)

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See detailImportance of acyl-coA oxidases in beta-decalactone production by Yarrowia lipolytica
Waché, Y.; Aguedo, Mario ULg; Wang, H.J. et al

in Abstracts of Papers of the 219th ACS national meeting (2000, March)

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See detailEvolution du conseil de fumure azotée du froment d'hiver
Bodson, Bernard ULg; Maes, N.; Herman, Jean-Luc et al

in Livre Blanc: Céréales - Gembloux (2000, February)

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See detailLes conseils de fumure azotée
Bodson, Bernard ULg; Herman, Jean-Luc; Destain, Jean-Pierre ULg et al

in Livre Blanc: Céréales - Gembloux (2000, February)

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See detailDesign of Load Shedding Schemes against Voltage Instability
Moors, Cedric; Lefebvre, Daniel; Van Cutsem, Thierry ULg

(2000, January 27)

This paper proposes a methodology for the design of automatic load shedding against long-term voltage instability. In a first step, a set of training scenarios is set up, corresponding to various ... [more ▼]

This paper proposes a methodology for the design of automatic load shedding against long-term voltage instability. In a first step, a set of training scenarios is set up, corresponding to various operating conditions and disturbances. Each scenario is analyzed to determine the minimal load shedding which stabilizes the system, with due consideration for the shedding location and delay. In a second step, the parameters of a closed-loop undervoltage load shedding scheme are determined so as to: (i) approach as closely as possible the optimal sheddings computed in the first step, over the whole set of scenarios; (ii) stabilize the system in all the unstable scenarios and (iii) shed no load in the stable ones. The corresponding optimization problem is solved using a (micro-)Genetic Algorithm. A detailed example is given on the Hydro-Quebec system in which load shedding is presently planned. [less ▲]

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See detailIdentification par empreintes génétiques des espèces animales entrant dans une chaîne alimentaire
Haezebroeck, Valérie; Renaville, Robert ULg; Bertozzi, Carlo et al

in Cinquième Carrefour des Productions animales. Quels systèmes de Productions Animales pour le 21ème siècle? (2000, January 26)

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See detailSélection assistée par marqueurs. PIT-1: un marqueur génétique intéressant pour la production laitière.
Parmentier, Isabelle; Gengler, Nicolas ULg; Bertozzi, Carlo et al

in Cinquième Carrefour des Productions Animales. Quels systèmes de Productions Animales pour le 21ème siècle? (2000, January 26)

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See detailAnalysis of a Voltage Instability Incident in the Greek Power System
Vournas, Costas; Manos, George; Kabouris, John et al

(2000, January)

The paper reports on a 1996 incident in the Greek power system that had all the characteristics of voltage instability and the subsequent analyses and countermeasures. Voltage stability analysis is ... [more ▼]

The paper reports on a 1996 incident in the Greek power system that had all the characteristics of voltage instability and the subsequent analyses and countermeasures. Voltage stability analysis is performed by both NTUA and ULg software tools that give identical simulation results. After the upgrades performed by PPC a considerable increase in the maximum power that can be fed to the Athens area is achieved. Finally, secure operation limits of the upgraded system are calculated. [less ▲]

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See detailEléments Finis de Lubrification pour la Prise en Compte du Frottement dans la Simulation de Processus de Formage des Matériaux
Boman, Romain ULg

in Chabrand, Patrick; Jean, Michel; Raous, Michel (Eds.) Colloque National Mécamat 2000 (2000, January)

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See detailSources de responsabilité pénale de l'employeur
Kefer, Fabienne ULg

in Responsabilité pénale de l'employeur (2000, January)

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See detailKystes colloïdaux familiaux : Suivi neuroendocrinologique
Valdes Socin, Hernan Gonzalo ULg; Wallemack, C.; Born, J. et al

in XVIIIème Congrès de la Société Française d'Endocrinologie - Abstract book (2000)

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See detailLes contrats. Le bail de droit commun et le bail de résidence principale
Kohl, Benoît ULg; Roland, Emmanuelle

in Chroniques du droit à l'usage du notariat (2000)

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See detailA Search For Efficient Trusses
Latteur, Pierre ULg; Samyn, Philippe

(2000)

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See detailRecent observations on oak decline in southern Belgium: nutritional aspects
Claes, V.; Duliere, J. F.; Malaisse, François ULg

in Recent advances on oak health in Europe (2000)

In the Walloon region (southern Belgium), the forests of indigenous oaks (Quercus robur and Quercus petraea) cover about 80 000 ha (17% of the total forest surface ). They represent more than 39% of the ... [more ▼]

In the Walloon region (southern Belgium), the forests of indigenous oaks (Quercus robur and Quercus petraea) cover about 80 000 ha (17% of the total forest surface ). They represent more than 39% of the standing hardwoods, with 14 million m3. As in neighbouring countries, they showed serious decline symptoms in the early 80s. The investigations conducted since that time didn't point out any single cause to the phenomenon. Far from observing a stabilization of the phenomenon, a recent outbreak occurred in 1998 and 1999. Locally, the number of dead trees reached values such as 20 to 25 individuals per hectare in mature forests. On the basis of sampling (82 plots, more than 2000 trees) covering all natural areas which are supposed to be favourable to both oak species, the study noted similar distribution of the trees in defoliation classes for Quercus petraea as well as Quercus robur . [less ▲]

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See detailDualisme, mobilité et déterminants familiaux: une analyse des transitions sur le marché du travail
Broze, L.; Gavray, Claire ULg; Ruyters, C.

in CIFOP (Ed.) Dualisme et Institutions du marché du travail (2000)

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See detailA fully coupled elasto-plastic damage model applied to anisotropic materials
Wauters, M.; Habraken, Anne ULg; Duchene, Laurent ULg

in Tassoulas, J. L. (Ed.) Proceedings of the 14th Engineering Mechanics Conference (2000)

In this paper, an elastoplastic energy-based anisotropic damage model for ductile fracture is described. A calibration method is also presented. The potential applicability of this model is illustrated by ... [more ▼]

In this paper, an elastoplastic energy-based anisotropic damage model for ductile fracture is described. A calibration method is also presented. The potential applicability of this model is illustrated by numerical examples of tensile test and Forming Limit Diagram establishment on a steel. [less ▲]

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See detailSwaged bolts: modelling of the installation process and numerical analysis of the mechanical behaviour
Dréan, M.; Habraken, Anne ULg; Bouchaïr, A. et al

in Iványi, M.; Muzeau, J.-P.; Topping, B. H. V. (Eds.) Computational Steel Structures Technology (2000)

Swaged bolts are an alternative to high strength (HS) bolts for connections in steel structures. To clarify the different steps involved during their specific installation process, a numerical modelling ... [more ▼]

Swaged bolts are an alternative to high strength (HS) bolts for connections in steel structures. To clarify the different steps involved during their specific installation process, a numerical modelling has been carried out. It allows the relevant phenomena to be described and to be evaluated. This numerical calculation accounts for mechanical plasticity and friction contact between the components of swaged bolts. The finite element code "Lagamine" designed for the forming analysis that requires the modelling of the friction between plastically deformable solids has been used with an original and quite efficient way to take into account the contact. The drawing of the stress distributions during and after the swaging process is the main result of this research. [less ▲]

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See detailDoppler echocardiographic features in an acute crisis of chronic obstructive pulmonary (COPD) in horses
Amory, Hélène ULg; Brihoum, M; Christmann, U et al

in Proceedings of the 39th Annual Congress of the British Equine Veterinary Association (BEVA) (2000)

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See detailSome enhancements of decision tree bagging
Geurts, Pierre ULg

in Proceedings of PKDD 2000, 4th European Conference on Principles of Data Mining and Knowledge Discovery (2000)

This paper investigates enhancements of decision tree bagging which mainly aims at improving computation times, but also accuracy. The three questions which are reconsidered are: discretization of ... [more ▼]

This paper investigates enhancements of decision tree bagging which mainly aims at improving computation times, but also accuracy. The three questions which are reconsidered are: discretization of continuous attributes, tree pruning, and sampling schemes. A very simple discretization procedure is proposed, resulting in a dramatic speedup without significant decrease in accuracy. Then a new method is proposed to prune an ensemble of trees in a combined fashion, which is significantly more effective than individual pruning. Finally, different resampling schemes are considered leading to different CPU time/accuracy tradeoffs. Combining all these enhancements makes it possible to apply tree bagging to very large datasets, with computational performances similar to single tree induction. Simulations are carried out on two synthetic databases and four real-life datasets. [less ▲]

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See detailLa traducción literaria en la Argentina: las editoriales Sur y Losada en la década del treinta
Willson, Patricia ULg

in Wenzel, Astrid (Ed.) Actas del II Congreso Latinoamericano de Traducción e Interpretación (2000)

En el marco de un proyecto de investigación mayor, dedicado a estudiar el impacto de la literatura traducida en el sistema literario argentino durante las décadas del cuarenta y del cincuenta, este ... [more ▼]

En el marco de un proyecto de investigación mayor, dedicado a estudiar el impacto de la literatura traducida en el sistema literario argentino durante las décadas del cuarenta y del cincuenta, este trabajo pretende caracterizar el momento fundacional de dos emprendimientos editoriales para los cuales la traducción constituyó una práctica central: las editoriales Sur y Losada. Fundadas en 1933 y 1938 respectivamente, Sur y Losada promovieron las primeras traducciones al castellano de numerosas obras que luego se difundirían por el resto de América Latina. En el análisis se aborda tanto la selección de textos traducidos como las marcas textuales y paratextuales indicadoras del proceso de profesionalización del traductor. La hipótesis que se sostiene es que, si bien en décadas anteriores ya se había traducido literatura extranjera en Buenos Aires, será en la década del treinta cuando esta práctica discursiva alcanzara un estatuto que posibilita la plena identificación del traductor como enunciador segundo del texto literario extranjero. [less ▲]

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See detailEnhancing mineral segmentation in optical microscopy with multispectral imaging
Pirard, Eric ULg; De Colnet, Laurence

in Proceedings 8th European Congress for Stereology (2000)

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See detailLes labels dans le secteur agricole wallon : situation et perspectives
Burny, Philippe ULg

in Association belge d'Economie Rurale (Ed.) Quatrième workshop pour économistes agricoles : proceedings (2000)

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See detailNumerical modelling of the forging process of rolls for rolling mills
Charles, J.-F.; Castagne, Sylvie; Zhang, Lihong ULg et al

in Pietrzyk, M.; Kusiak, J.; Majta, J. (Eds.) et al Proceedings of the 8th International Conference on Metal Forming (2000)

This article presents comparisons of forging processes between two flat tools, between two round tools, and at different forging temperatures. Simulation results help to recover and better understa,d long ... [more ▼]

This article presents comparisons of forging processes between two flat tools, between two round tools, and at different forging temperatures. Simulation results help to recover and better understa,d long practice in the forging industry. [less ▲]

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