References of "Paper published in a book"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailTemporal machine learning for switching control
Geurts, Pierre ULg; Wehenkel, Louis ULg

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

In this paper, a temporal machine learning method is presented which is able to automatically construct rules allowing to detect as soon as possible an event using past and present measurements made on a ... [more ▼]

In this paper, a temporal machine learning method is presented which is able to automatically construct rules allowing to detect as soon as possible an event using past and present measurements made on a complex system. This method can take as inputs dynamic scenarios directly described by temporal variables and provides easily readable results in the form of detection trees. The application of this method is discussed in the context of switching control. Switching (or discrete event) control of continuous systems consists in changing the structure of a system in such a way as to contreol its behavior. Given a particular discrete control switch, detection trees are applied to the induction of rules which decide based on the available measurements whether or not to operate a switch. Two practical applications are discussed in the context of electrical power systems emergency control. [less ▲]

Detailed reference viewed: 19 (0 ULg)
Full Text
See detailLes fusions de communes en Belgique : Nouvelles communes, nouveaux territoires de projets ?
Schmitz, Serge ULg

in Territoires prescrits, territoires vécus : inter-territorialité au coeur des recompositions des espaces ruraux : ARF, Toulouse 25-27 octobre 2000 (2000)

Detailed reference viewed: 13 (4 ULg)
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)

Detailed reference viewed: 2 (0 ULg)
Peer Reviewed
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 ▲]

Detailed reference viewed: 7 (1 ULg)
Full Text
Peer Reviewed
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 ▲]

Detailed reference viewed: 13 (0 ULg)
Peer Reviewed
See detailAre event-based and time-based prospective memory affected in the same way by aging?
Bastin, Christine ULg; Meulemans, Thierry ULg

in Proceedings of the Annual Meeting of the Belgian Psychological Society (2000)

Detailed reference viewed: 10 (0 ULg)
Peer Reviewed
See detailLa commune de Liège et le culte de Saint-Jacques à la fin du Moyen Age
Xhayet, Geneviève ULg

in Actes du LIIe congrès de la Fédération des Cercles d'archéologie et d'histoire de Belgique. 5e Congrès de l’Association des Cercles Francophones d’Histoire et d’Archéologie de Belgique, Herbeumont, 22-25 août 1996, tome II (2000)

Detailed reference viewed: 11 (6 ULg)
Full Text
See detailEnhancing mineral segmentation in optical microscopy with multispectral imaging
Pirard, Eric ULg; De Colnet, Laurence

in Proceedings 8th European Congress for Stereology (2000)

Detailed reference viewed: 21 (5 ULg)
Full Text
Peer Reviewed
See detailRenewables in the city environment
Littlefair, P.; Teller, Jacques ULg; Klisikas, N. et al

in Renewable energy for Europe : campaign for take-off (2000)

Detailed reference viewed: 15 (7 ULg)
See detailAPPLICATION DU MODELE PEGASE AU BASSIN RHIN-MEUSE (France)
Smitz, Joseph ULg; Everbecq, Etienne ULg; Deliège, Jean-François ULg et al

in Garnier, Josette; Mouchel, Jean-Marie (Eds.) Man and river systems: the functioning of river systems at the basin scale (2000)

Le modèle PEGASE (Planification Et Gestion de l’ASsainissement des Eaux) a été développé afin d'orienter les choix en matière de gestion des eaux de surface par le calcul prévisionnel et déterministe de ... [more ▼]

Le modèle PEGASE (Planification Et Gestion de l’ASsainissement des Eaux) a été développé afin d'orienter les choix en matière de gestion des eaux de surface par le calcul prévisionnel et déterministe de la qualité des eaux en fonction des apports et rejets polluants, dans des conditions hydrologiques diverses. A la demande de l'Agence de l'Eau Rhin-Meuse, une application de PEGASE a été menée sur le bassin Rhin-Meuse de manière à fournir à l'Agence un outil de gestion de la qualité des eaux de surface et un outil de planification de l'épuration des eaux usées. Dans le cas de l'application de PEGASE au bassin Rhin-Meuse, des simulations générales ont été effectuées pour l'ensemble du bassin (36.000 km², 185 rivières). Ensuite, des sous-bassins particuliers (la Bruche et la Moder) ont été étudiés de manière plus approfondie. Ces simulations ont permis de comparer différents scénarios d'épuration. [less ▲]

Detailed reference viewed: 51 (12 ULg)
See detailBelgian Activities Related to the EUREF Subcommission
Bruyninx, Carine; Dehant, Véronique; Everaerts, Michel ULg et al

in Gubler, E.; Torres, J.; Hornik, H. (Eds.) EUREF Publication (2000)

Detailed reference viewed: 9 (0 ULg)
Peer Reviewed
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)

Detailed reference viewed: 2 (0 ULg)
See detailLa bonne foi procédurale, prévention de l'abus de droit de défense
Georges, Frédéric ULg; de Leval, Georges ULg

in Les perversions du droit de la défense (2000)

Detailed reference viewed: 89 (5 ULg)
Full Text
See detailLa construction sociale de la qualité: le cas de la viande bovine
Mormont, Marc ULg; Stassart, Pierre M ULg

in Proceedings de la V Carrefour des Productions animales :"Quels Systèmes de Production Animales pour le 21ème Siècle?" (2000)

Detailed reference viewed: 19 (1 ULg)
Full Text
Peer Reviewed
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 ▲]

Detailed reference viewed: 46 (8 ULg)
Full Text
Peer Reviewed
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 ▲]

Detailed reference viewed: 14 (1 ULg)
Full Text
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 ▲]

Detailed reference viewed: 23 (5 ULg)
Full Text
Peer Reviewed
See detailComparison of physical education teaching events' perception by beginning and experienced teachers
Cloes, Marc ULg; Vandersmissen, Axel; Piéron, Maurice

in Carreiro da Costa, F.; Diniz, J.; Carvalho, L. (Eds.) et al Proceedings of the AIESEP International Seminar "Research on Teaching. Research on Teacher Education" (2000)

Detailed reference viewed: 24 (2 ULg)
Full Text
Peer Reviewed
See detailMoving from colour to multispectral digital imaging in optical microscopy
Pirard, Eric ULg; De Colnet, Laurence

in NvvM Jaarboek (2000)

Detailed reference viewed: 11 (3 ULg)
Full Text
See detailFifteen years-trend characteristics of key stratospheric constituents monitored by FTIR above the Jungfraujoch.
Mahieu, Emmanuel ULg; Zander, Rodolphe ULg; Demoulin, Philippe ULg et al

in Harris, N. R. P.; Guirlet, M.; Amanatidis, G. T. (Eds.) Air Pollution Report 73 EUR 19340 (2000)

Detailed reference viewed: 10 (2 ULg)
Full Text
Peer Reviewed
See detailNumerical modelling of the forging process of rolls for rolling mills
Charles, J. F.; Castagne, S.; Zhang, Lihong ULg et al

in Proceedings of the 5ème Congrès national belge, Mecanique théorique et appliquée (2000)

Detailed reference viewed: 17 (4 ULg)
Full Text
Peer Reviewed
See detailMesure du by-pass ruminal d'un supplément de lysine et de méthionine libres chez le taurillon Blanc Bleu Belge culard.
Froidmont, Eric; Rondia, Pierre; Beckers, Yves ULg et al

in 7èmes Rencontres autour de la Recherche sur les Ruminants, Paris, France, 6-7 décembre 2000 (2000)

Detailed reference viewed: 17 (0 ULg)
Full Text
Peer Reviewed
See detailThermo-mechanical model of a strand in the mould of a continuous casting plant
Pascon, Frédéric ULg; Habraken, Anne ULg; Bourdouxhe, Michel et al

in Proceedings of the European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2000) (2000)

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

Surface and internal quality of continuous casts depends very much on the behaviour of the strand in the mould. Among the parameters likely to influence this behaviour, the mould taper takes a prominen tpart. In order to understand better the influence of this parameter, we build up a thermal-mechanical finite element model. A slice of the strand is modelled and its evolution is observed. The main results are temperature field and solidification evolution, stree, strain and strain rate fields and losses of contact and returns to contact analysis. The model includes an elastic-viscous-plastic law, to describe the behaviour of steel from liquid to solid state, a thermal-mechanical element that takes into account thermal expansion and mechanical behaviour of the strand, a unilateral contact element, z 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. This paper presents the first results obtained with an relatively simple section ( a125 mm square billet). Now the model is used with more complex section (beam blanks) and its validation is going on. [less ▲]

Detailed reference viewed: 43 (8 ULg)
Full Text
Peer Reviewed
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)

Detailed reference viewed: 103 (3 ULg)
Full Text
Peer Reviewed
See detailA new elastic-visco-plastic damage model for annealed aluminium: theory, calibration and validation
Habraken, Anne ULg; Zhang, Lihong ULg; Wang, X. C. et al

in Benallal, A. (Ed.) Proceedings of the Continuous Damage and Fracture Symposium (2000)

This article describes an energy based, two variables, isotropic damage model merged with Bodner's elasto-visco-plastic model and implemented in a non-linear finite element code. The procedure to identify ... [more ▼]

This article describes an energy based, two variables, isotropic damage model merged with Bodner's elasto-visco-plastic model and implemented in a non-linear finite element code. The procedure to identify the parameters of the model and its experimental validation are presented and applied to an annealed aluminium. [less ▲]

Detailed reference viewed: 56 (6 ULg)
Full Text
Peer Reviewed
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)

Detailed reference viewed: 16 (2 ULg)
Full Text
See detailLes attentes des consommateurs, des nouveaux critères de sélection porcine
Leroy, Pascal ULg; Beduin, Jean-Marie; Verleyen, Vincent ULg et al

in Sixième Carrefour des productions animales "La sélection animale au service de la Société" (2000)

Detailed reference viewed: 34 (6 ULg)
Full Text
Peer Reviewed
See detailAdaptive lambda -tracking for nonlinear systems with higher relative degree
Bullinger, Eric ULg; Allgöwer, F.

in Proc. 39th IEEE Conference on Decision and Control (2000)

Previous results for adaptive lambda -tracker have focused on nonlinear systems with relative degree one or on linear systems with higher relative degree. We extend the adaptive lambda -tracker to lambda ... [more ▼]

Previous results for adaptive lambda -tracker have focused on nonlinear systems with relative degree one or on linear systems with higher relative degree. We extend the adaptive lambda -tracker to lambda -stabilize nonlinear system with higher relative degree. Only little structural information about the system to be controlled is needed. lambda -stability and convergence of the adaptation is proven for tracking a large class of reference trajectories. The design of the controller is very simple and intuitive, only few parameters have to be tuned [less ▲]

Detailed reference viewed: 15 (0 ULg)
Full Text
Peer Reviewed
See detailChoice of a suitable E-nose output variable for the continuous monitoring of an odour in the environment
Nicolas, Jacques ULg; Romain, Anne-Claude ULg; Monticelli, D. et al

in Gardner, J.; Persaud, K. (Eds.) Electronic noses and olfaction 2000. Proceedings of abstracts ISOEN 2000. (2000)

An array of tin-oxide sensors is used to continuously monitor different odour emissions in the environment. The paper presents some issues aiming at improving the portability and the user-friendliness of ... [more ▼]

An array of tin-oxide sensors is used to continuously monitor different odour emissions in the environment. The paper presents some issues aiming at improving the portability and the user-friendliness of the instrument as well as testing what kind of signal may be used to monitor the odour "intensity". Main results are the following. The test of various pre-processing data algorithms pointed out that the use of pure reference air could be avoided, as long as the sensors are allowed to periodically regenerate in the presence of ambient air. Sensor array in static contact with ambient air could be sufficient for the on-line monitoring, but the use of a controlled gas flow system to transfer the odour from the source is better to avoid the influence of air movement on the heated sensors. The control of the temperature and the humidity of the gas and the thermo-regulation of the sensor chamber don't seem essential, even for outdoor operation. When trying to build a regression model linking the odour intensity to the sensor signals, Partial Least Square (PLS) model gives better results with respect to Multi Linear Regression or Principal Component regression models. For an application around a landfill area, where sensor signals are compared to the personal feeling of the operator in the field, PLS gives a percentage of 71% correct intensity prediction. [less ▲]

Detailed reference viewed: 76 (7 ULg)
Full Text
Peer Reviewed
See detailAux frontières de la coordination : du fonctionnement des termes "corrélatifs" chez Tacite
Longrée, Dominique ULg

in Moussy, Claude (Ed.) De lingua Latina Novae quaestiones, Actes du 10e Colloque International de Linguistique latine, Paris-Sèvres, 19-23 avril 1999 (2000)

Detailed reference viewed: 5 (0 ULg)
Full Text
Peer Reviewed
See detailImprovement of the Parametric Fire of Eurocode 1 based on Experimental Tests Results
Franssen, Jean-Marc ULg

in Curtat, Michel (Ed.) FIRE SAFETY SCIENCE, Proceedings of the sixth international Symposium (2000)

The basic equations, the limitations and the main features of the parametric fire proposed in Annexe B of Eurocode 1 are given. 48 experimental fire tests are used to assess the validity of this model ... [more ▼]

The basic equations, the limitations and the main features of the parametric fire proposed in Annexe B of Eurocode 1 are given. 48 experimental fire tests are used to assess the validity of this model. The model has been applied to these tests and the comparison has been made, for each test, on the maximum temperature in the air and on the maximum temperature calculated in 2 hypothetical steel sections, one thermally protected and one unprotected. The agreement is very poor for the air and for the unprotected steel temperature, and somewhat better for the protected steel temperature. Some proposals are made which allow to improve the agreement, while keeping the same expressions for the parametric fire. These modifications concern the equivalent thermal properties of multi material walls, and the introduction of a minimum duration of the fire and a of a ventilation effect in case of fuel-bed controlled fires. [less ▲]

Detailed reference viewed: 91 (2 ULg)
Peer Reviewed
See detailLocal buckling of structures in case of fire
Talamona, D.; Franssen, Jean-Marc ULg

in Proceedings of the 4th annual workshop Targeted Research Action - Environmentally Friendly Construction Technologies, ECCREDI (2000)

Detailed reference viewed: 11 (0 ULg)
Full Text
Peer Reviewed
See detailUtilisation des fécès en remplacement du jus de rumen pour évaluer la fermentescibilité des aliments.
Ndimubandi, Albéric; Beckers, Yves ULg; Thewis, André ULg et al

in 7èmes Rencontres autour de la Recherche sur les Ruminants, Paris, France, 6-7 décembre 2000 (2000)

Detailed reference viewed: 36 (2 ULg)
Peer Reviewed
See detailJoint representation in industrial pitched-roof portal frames
Jaspart, Jean-Pierre ULg

in Proceedings of the International Conference "Steel Structures of the 2000's" (2000)

Detailed reference viewed: 32 (0 ULg)
Peer Reviewed
See detailSensitivity of the black sea's ecosystem to physical processes: first results of a high resolution 3D interdisciplinary model
Grégoire, Marilaure ULg; Beckers, Jean-Marie ULg; Nihoul, Jacques ULg et al

in Balopoulos, E.; Chronis, G.; Lipiatou, E. (Eds.) et al International conference. Oceanography of the eastern Mediterranean and Black Sea. Similarities and differences of two interconnected basins (2000)

A hydrodynamical model of the general circulation in the Black Sea has been build up, using the GHER (GeoHydrodynamics and Environment Research) three-dimensional, non-linear, baroclinic, turbulent ... [more ▼]

A hydrodynamical model of the general circulation in the Black Sea has been build up, using the GHER (GeoHydrodynamics and Environment Research) three-dimensional, non-linear, baroclinic, turbulent closure model. A model with 5 km horizontal resolution and 25 vertical levels is used to compute the typical seasonal cycle by forcing the model with climatological monthly mean fields of temperature, salinity and wind stress at the air-sea interface. Furthermore, the river discharges of the Danube, the Dnestr and the Dnepr are taken into account. This high resolulion model resolves the baroclinic instabilities generated by the interactions of the boundary current with the coastline geometry or with the continental shelf/slope topography. A simple ecosystem model defined by a nitrogen cycle is coupled with Ihe hydrodynamical model. The state variables of this model are defined as those which are necessary and sufficient to assess the effects of the physical processes, and in particular of the boundary current instability , on the space time distribution of the primary and secondary productions. The results of the 3D ecohydrodynamic model are compared with CZCS data of surface chlorophyll fields collected during the period from 1978 to 1986. [less ▲]

Detailed reference viewed: 7 (2 ULg)
Full Text
See detailCoupling of parallel river and groundwater models to simulate dynamic groundwater boundary conditions
Carabin, Guy; Dassargues, Alain ULg

in Bentley, L. R.; Sykes, J. F.; Brebbia, C. A. (Eds.) et al Proc. of Computational Methods in Water Resources 2000 (2000)

Detailed reference viewed: 18 (2 ULg)
Peer Reviewed
See detailAnalyse PIXE sur un tableau de Cranach le Jeune. Les résultats et leur interprétation
Allart, Dominique ULg; Weber, Georges; Martinot, Lucien et al

in Art & Chimie. La couleur (2000)

Detailed reference viewed: 35 (0 ULg)
Peer Reviewed
See detailDoppler echocardiographic measurement of cardiac output in the calf: a preliminary study
Amory, Hélène ULg; Sandersen, Charlotte ULg; Brihoum, M et al

in Proceedings of the World Assoc. Buiatrics Congress (2000)

Detailed reference viewed: 6 (0 ULg)
Full Text
See detailUnimolecular Reaction Dynamics from Kinetic Energy Release Distributions: extent of Phase Space Sampling.
Hoxha, A.; Locht, Robert ULg; Lorquet, Andrée ULg et al

in Gelpi, Ed. (Ed.) 15th International Mass Spectrometry Conference: Book of Abstracts. (2000)

The dissociative photoionization of C2H3Br+ in the Br and HBr loss channels is reported. The KER distributions are analyzed by the Maximum Entropy Method (MEM). It can be concluded that at low and high ... [more ▼]

The dissociative photoionization of C2H3Br+ in the Br and HBr loss channels is reported. The KER distributions are analyzed by the Maximum Entropy Method (MEM). It can be concluded that at low and high internal energy the dissociations are statistical. At intermediate internal energies the excess energy is not completely randomized. [less ▲]

Detailed reference viewed: 49 (6 ULg)
Full Text
See detailOptical Variability of the Lambda Eri Star HD 105382: Pulsation or Rotation?
Briquet, Maryline ULg; Aerts, C.; De Cat, P.

in The Impact of Large-Scale Surveys on Pulsating Star Research, ASP Conference Series, Vol. 203; also IAU Colloquium #176. (2000)

HD 105382 is clearly a monoperiodic, very active λ Eri star with the frequency 0.7721 d[SUP]-1[/SUP]. Its photometric behaviour and the moment variations are not typical for a standard pulsational model.

Detailed reference viewed: 8 (4 ULg)
Full Text
Peer Reviewed
See detailAdaptive lambda-tracking in anesthesia
Bullinger, Eric ULg; Frei, C. W.; Sieber, T. et al

(2000)

We present an adaptive controller for tracking reference signals of end-tidal concentration of anesthetic gas for automatic control in anesthesia. The adaptation scheme does not use any identification ... [more ▼]

We present an adaptive controller for tracking reference signals of end-tidal concentration of anesthetic gas for automatic control in anesthesia. The adaptation scheme does not use any identification mechanism. Since only structural information on the system to be controlled is needed for the controller design, the controller is very robust to changes in the parameters of the system [less ▲]

Detailed reference viewed: 22 (2 ULg)
Full Text
Peer Reviewed
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 ▲]

Detailed reference viewed: 57 (18 ULg)
Peer Reviewed
See detailLe corps comme interprète : aux origines de la représentation
Gauthier, Jean-Marie ULg

in Cohen-Boulakia, Claude; Gorot, Jacques (Eds.) Corps, âme, esprit (2000)

Detailed reference viewed: 52 (12 ULg)
Peer Reviewed
See detailModeling the Black Sea and the Mediterranean Sea hydrodynamics: a comparative study
Beckers, Jean-Marie ULg; Elmoussaoui, A.; Rixen, M. et al

in Balopoulos, E.; Chronis, G.; Lipiatou, E. (Eds.) et al International conference. Oceanography of the eastern Mediterranean and Black Sea. Similarities and differences of two interconnected basins, Zappeion international conference Centre (2000)

The application of the GHER 3D primitive equation model to the simulation of the seasonal cycle of the Mediterranean and Black Sea circulation will be shown. The two basins are very illustrative for ... [more ▼]

The application of the GHER 3D primitive equation model to the simulation of the seasonal cycle of the Mediterranean and Black Sea circulation will be shown. The two basins are very illustrative for either concentration or dilution basins, and modelling such different systems needs some special attention with respect to the representation of the water masses and mixing between the different layers. The strength of the variability of both basins will be compared, including comparison with climatological data. Turbulent characteristics in both cases alalysed, showing that at the scales under investigations, both turbulent regimes are close to a balance between production, destruction and vertical diffusion of turbulence. ft is also shown how the river dominaled Black Sea exhibits specific free surface behaviors while the Mediterranean Sea exhibits specific deep water formations leading both to a different kind of vertical mixing. [less ▲]

Detailed reference viewed: 6 (2 ULg)
Full Text
Peer Reviewed
See detailSome further results on adaptive lambda-tracking for linear systems with high relative degree
Bullinger, Eric ULg; Findeisen, Rolf; Kraus, Frantisek et al

in Proc. of the 2000 American Control Conf. (2000)

Several adaptive controllers which universally achieve the so-called lambda -tracking have been proposed in the literature. From a practical point of view, previous results are not usable for systems with ... [more ▼]

Several adaptive controllers which universally achieve the so-called lambda -tracking have been proposed in the literature. From a practical point of view, previous results are not usable for systems with a high relative degree because of bad numerical conditioning. The paper presents a modified approach overcoming this numerical problem while achieving the same robust stability properties. Stability and convergence of the adaptation is proven for tracking a large class of reference trajectories. The design of the controller is very simple and intuitive, only few parameters have to be tuned and little structural information about the system to be controlled is needed [less ▲]

Detailed reference viewed: 19 (0 ULg)
Full Text
Peer Reviewed
See detailSimulating conditional reasoning containing negations : A computer model and human data
Sougné, Jacques ULg

in Gleitman, L. R. (Ed.) Proceedings of the twenty-second annual Conference of the Cognitive Science Society : August 13-15, 2000 (2000)

Modelling human conditioning reasoning of the type 'if p then q' containing negations poses a challenge for connectionism. A network of spiking neurons (INFERNET) was used to model this type of ... [more ▼]

Modelling human conditioning reasoning of the type 'if p then q' containing negations poses a challenge for connectionism. A network of spiking neurons (INFERNET) was used to model this type of conditional reasoning. This model also provides insights on certain human limitations. The model is compared to empirical data, and classical explanations. Statistical analysis shows that the model's performance not only surpasses classical explanations but also provides a very good overall fit to empirical data. INFERNET simulator results also compared to human performance. The simulations compare well with both human performance and limitations. [less ▲]

Detailed reference viewed: 7 (0 ULg)
See detailFragmentation assessment using a single value: proposal of a new measure.
Bogaert, Jan ULg; Ceulemans, R; Van Hecke, P

in Symposium on biodiversity: from genes to landscapes. (2000)

Detailed reference viewed: 4 (0 ULg)
See detailEstimation of variance components for cow and parity effects from test-day yields
Bormann, J.; Wiggans, G. R.; Philpot, J. C. et al

in Abstracts from the 2000 ADSA/ASAS joint annual meeting (2000)

Detailed reference viewed: 8 (1 ULg)
Full Text
See detailAre there arguments suggesting that polyamines are preventive agents of food allergy ?
Dandrifosse, Guy ULg; Peulen, Olivier ULg; Khefif, N. El et al

in Proceeding of the COST 917 Meeting in Malaga (2000)

Detailed reference viewed: 5 (1 ULg)
See detailDamage Model Identification Using Inverse Problem Methodology
KLEINERMANN, J. P.; Ponthot, Jean-Philippe ULg; Stainier, Laurent ULg

in proceedings of Plasticity’2000 (2000)

Detailed reference viewed: 20 (1 ULg)
Peer Reviewed
See detailAutochtonus cases of piroplasmosis in Belgium and Northern France
Christmann, U; Sandersen, Charlotte ULg; Lhonneux, JF et al

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

Detailed reference viewed: 5 (0 ULg)
See detailLe conseil multiculturel dans les universités européennes : quelles compétences et quelles formations ?
Broonen, Jean-Paul ULg

in Slavors, Monica; Broonen, Jean-Paul; Wahlström, Majken (Eds.) The new millenium : A skills challenge for higher education, the counsellor's responsability for facilitating equality and diversity in a European diversity (2000)

Detailed reference viewed: 18 (2 ULg)
See detailLa cartographie « rocambolesque » de Paris et du Buenos Aires arltien
Willson, Patricia ULg

in Crolla, Adriana (Ed.) Temas de literatura francesa. Actas de las XI Jornadas Nacionales de Literatura Francesa (2000)

Detailed reference viewed: 18 (3 ULg)
See detailOptimization Methods for Inverse Problems in Metal Forming Simulation
KLEINERMANN, J. P.; Ponthot, Jean-Philippe ULg

in Proceedings of SACAM 2000, International Conference on Applied Mechanics (2000)

Detailed reference viewed: 14 (1 ULg)
Full Text
See detailImpact économique de l'Agenda 2000 sur des exploitations-types en Région wallonne
Burny, Philippe ULg

in Centre de Recherches Agronomiques; Faculté universitaire des Sciences Agronomiques de Gembloux (Eds.) Cinquième Carrefour des Productions Animales "Quels systèmes de productions animales pour le 21ème siècle" (2000)

Detailed reference viewed: 12 (4 ULg)
Full Text
Peer Reviewed
See detailSome theoretical and modelling aspects of the age as a tool for understanding marine flows
Deleersnijder, E.; Campin, J. M.; Beckers, Jean-Marie ULg et al

in Alonso Del Rosario, J. L.; Gallego, F. O. (Eds.) Actas de la II Jornadas de análisis de variables y simulación numérica del intercambio de masas de agua a través del estrecho de Gibraltar (2000)

The age of a parcel of a constituent of seawater is defined to be the time elapsed since the parcel under consideration left the region where its age is prescribed to be zero. Estimating the age is thus ... [more ▼]

The age of a parcel of a constituent of seawater is defined to be the time elapsed since the parcel under consideration left the region where its age is prescribed to be zero. Estimating the age is thus an invaluable tool for understanding complex oceanic flows and the functioning of the numerical models used for representing them. In this paper, a general theory of the age is presented, in which advection, diffusion, production and destruction are properly accounted for. The partial differential equations used for the rigorous computation of the age as a function of space and time are established. This general theory is applied to the computation of the ventilation rates in the World Ocean. The results are compared with those of widely used carbon-14-like dating techniques. Using both numerical simulations and analytical developments, it is shown that the age of the radioactive tracer is smaller than the carbon-14-like age, which is larger than that of the passive tracer. The latter is equivalent to the ventilation or water age. The difference between the various ages, which is essentially due to the influence of mixing processes, increases as the timescale of decay of the radioactive tracer decreases [less ▲]

Detailed reference viewed: 18 (2 ULg)
Full Text
Peer Reviewed
See detailAssessment of crop based farming systems with a focus on pigeonpea in one selected district in arid and semi-arid lands in the Kenyan coast. Ed. by E. Feoli, D. Pottier, Z. Woldu. Sustainable development of dryland areas of East Africa
Mwang'Ombe, A.W; Olubayo, F; Baudoin, Jean-Pierre ULg et al

in Proceedings of the International Workshop, Addis Ababa, November 9th-12th 1998. European Commission (2000)

Detailed reference viewed: 6 (2 ULg)
See detailAccurate prediction of Springback in Sheet Metal Forming
GOHY, S.; Papeleux, Luc ULg; COLLARD, X. et al

in Proceedings of the 8th International Conference METAL FORMING 2000 (2000)

Detailed reference viewed: 19 (1 ULg)
Peer Reviewed
See detailContemplatio Mundi. Le paysage cosmique à la Renaissance
Allart, Dominique ULg

in Angotti Salgueiro (Ed.) Paisagem e Arte. A invençao da natureza, a evoluçao do olhar (2000)

Detailed reference viewed: 18 (2 ULg)
Peer Reviewed
See detailMetal Forming Processes Optimization Using Inverse Problems
KLEINERMANN, J. P.; Stainier, Laurent ULg; Ponthot, Jean-Philippe ULg

in Proceedings of the Fifth National Belgian Congress on Theoretical and Applied Mechanics (2000)

Detailed reference viewed: 5 (1 ULg)
Full Text
See detailLong-Term Photometric and Spectroscopic Monitoring of Slowly Pulsating B Stars
Aerts, C.; De Cat, P.; De Ridder, J. et al

in The Impact of Large-Scale Surveys on Pulsating Star Research, ASP Conference Series, Vol. 203; also IAU Colloquium #176. Edited by L. Szabados and D. Kurtz, p.437 (2000)

We review the current status of our long-term monitoring project on slowly pulsating B stars that we started in the course of 1996 and that was recently completed as far as the first part of our plan is ... [more ▼]

We review the current status of our long-term monitoring project on slowly pulsating B stars that we started in the course of 1996 and that was recently completed as far as the first part of our plan is concerned. In total, we have selected 17 southern and 8 northern stars. The idea is to fully exploit our current data in the near future and to select the most interesting targets for further very-long-term follow-up monitoring. A first conclusion is that half of the southern targets turn out to be spectroscopic binaries. Some of these have circular orbits and periods of the same order of magnitude as the intrinsic pulsation period(s) of the primary. The eccentric binaries have periods ranging from 12 to 460 d. For most stars the photometric behaviour is dominated by the same frequency as the intrinsic spectroscopic variability. Multiperiodicity in the expected frequency range is found for almost all stars. Two objects, however, turn out to have only one dominant pulsation mode. [less ▲]

Detailed reference viewed: 7 (2 ULg)
Full Text
See detailParameter identification of nolinear mechanical systems using POD
Lenearts, Vincent; Kerschen, Gaëtan ULg; Golinval, Jean-Claude ULg

in 18th International Modal Analysis Conference, San Antonio, 2000 (2000)

Proper Orthogonal Decomposition (POD), also known as Karhunen-Loeve decomposition, or principal components analysis (PCA), is emerging as a useful experimental tool in dynamics and vibrations. The POD is ... [more ▼]

Proper Orthogonal Decomposition (POD), also known as Karhunen-Loeve decomposition, or principal components analysis (PCA), is emerging as a useful experimental tool in dynamics and vibrations. The POD is a statistical pattern analysis technique for finding the dominant structures in an ensemble of spatially distributed data. These structures can be used as an orthogonal basis for efficient representation of the ensemble. The Proper Orthogonal Modes (POM) have been interpreted mainly as empirical system modes. They have been shown to represent the optimal distributions of kinetic energy or power, and the proper orthogonal values indicate the power associated with these principal distributions. We investigate the use of the proper orthogonal modes of displacements for the identification of parameters of nonlinear dynamical structures with an optimization procedure based on the difference between the experimental and simulated POM. A numerical example of a beam with a local nonlinear component will illustrate the method. [less ▲]

Detailed reference viewed: 38 (4 ULg)
Full Text
See detailMonitoring the stratospheric chlorine budget during the past decades: the Montreal Protocol at work
Mahieu, Emmanuel ULg; Zander, Rodolphe ULg; Mélen, Francine et al

in NASDA (Ed.) Proceedings of the Quadriennal ozone symposium - Sapporo 2000 (2000)

The study of series of ground-based solar observations performed within the frame of the NDSC indicates that the rate of increase of the atmospheric loading of inorganic chlorine has progressively slowed ... [more ▼]

The study of series of ground-based solar observations performed within the frame of the NDSC indicates that the rate of increase of the atmospheric loading of inorganic chlorine has progressively slowed down, then stabilized around 1996-97, with a subsequent tendency towards a decrease. The investigation is based on total column abundances of HCl and ClONO2 measured at the Jungfraujoch station in the Swiss Alps and on stratospheric columns of HCl derived from observations at Kitt Peak National Observatory (Arizona, USA). The observed changes are compared with near-global observations of HCl around the stratopause by HALOE and with a global, best-case emission scenario of Cl-bearing ground-level source gases compiled by UNEP [less ▲]

Detailed reference viewed: 11 (0 ULg)
Full Text
See detailProper Orthogonal Decomposition and Model Reduction of Nonlinear Systems
Kerschen, Gaëtan ULg; Lenaerts, Vincent; Golinval, Jean-Claude ULg

in European Cost F3 Conference on system Identification & Structural Health Monitoring, Madrid, 2000 (2000)

This work deals with the application of the proper orthogonal decomposition (POD) to structural dynamics. On one hand, a physical interpretation of the proper orthogonal modes (POM) is given using the ... [more ▼]

This work deals with the application of the proper orthogonal decomposition (POD) to structural dynamics. On one hand, a physical interpretation of the proper orthogonal modes (POM) is given using the singular value decomposition (SVD). It is shown that the POM converge to the normal modes under some circumstances. On the other hand, the POM are exploited for model reduction purposes. The efficiency of the reduced model for the prediction of the response is tested on a nonlinear beam. The comparison with another reduced model obtained via the normal modes of the linearised system points out that the POM are optimal for the reconstruction of the dynamics of a system. [less ▲]

Detailed reference viewed: 40 (1 ULg)
Full Text
Peer Reviewed
See detailGeomechanical constitutive modelling of a chalk partly saturated by oil and water
Collin, Frédéric ULg; Delage, Pierre; Schroeder, Christian ULg et al

in DGGT (Ed.) Eurock 2000 Symposium (2000)

Chalk in oil reservoir is generally saturated by two or more different fluids. In this paper, a constitutive law is proposed for the modelling of the mechanical behaviour of a chalk. The effects of the ... [more ▼]

Chalk in oil reservoir is generally saturated by two or more different fluids. In this paper, a constitutive law is proposed for the modelling of the mechanical behaviour of a chalk. The effects of the capillary pressure are taken into account. They are considered as an independent variable, as in the Barcelona’s basic model developed for unsaturated clay. On the other hand, internal friction and pore collapse are modelled as independent mechanisms. Eventually, the model predictions are compared with experimental results. [less ▲]

Detailed reference viewed: 40 (3 ULg)
Full Text
See detailDetection, localisation and identification of nonlinearities in structural dynamics
Lenaerts, Vincent; Kerschen, Gaëtan ULg; Trandafilova, Irina et al

in International Conference on noise and vibration Engineering, Leuven, 2000 (2000)

This paper discusses procedures for nonlinearity detection, localisation and identification in structures from time domain vibration measurements. The detection and the localisation techniques use pattern ... [more ▼]

This paper discusses procedures for nonlinearity detection, localisation and identification in structures from time domain vibration measurements. The detection and the localisation techniques use pattern recognition tools and are based on a dissimilarity measure between the signals coming from a linear structure and the corresponding nonlinear one. The detection procedure distinguishes between linear structures and structures with a nonlinearity employing nearest neighbour techniques. The localisation procedure combines substructuring with a nonlinearity detection procedure. This technique is useful for cases of local nonlinearity, when its localisation can be of value for the consequent understanding and modelling of the structure. The identification procedure makes use of the Karhunen-Loeve transform, known also as Proper Orthogonal Decomposition (POD). It is a powerful tool for solving inverse problems in nonlinear structural dynamics. The identification procedure works on the basis of the minimisation of a difference function between the experimental and the simulated proper orthogonal modes (POM). The proposed techniques are demonstrated on a beam test case with a local damping type nonlinearity. [less ▲]

Detailed reference viewed: 51 (5 ULg)
Peer Reviewed
See detailWater vapour emission and nitrogen balance from a sawdust deep litter system for weaned pigs
Nicks, Baudouin ULg; Laitat, Martine ULg; Vandenheede, Marc ULg et al

in Proceedings of the Xth International Congress for Animal Hygiene (2000)

Detailed reference viewed: 11 (0 ULg)
See detailModélisation numérique de la magnétostriction et de l'hystérésis des matériaux magnétiques
Vande Sande, Hans; Deliège, Geoffrey ULg; Delaere, Koen et al

in MGE 2000, Lille, France, December 13-14, 2000 (2000)

Detailed reference viewed: 21 (0 ULg)
Full Text
Peer Reviewed
See detailA fully coupled elasto-plastic damage model applied to anisotropic materials
Wauters, M.; Habraken, Anne ULg; Duchene, Laurent ULg

(2000)

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

In this paper, an elastoplastic energy-based anisotropic damage model for ductile fracture is described. A calibration method is presented. The potential applicability of this model is illustrated by a numerical example of deep drawing process realised on two steels. [less ▲]

Detailed reference viewed: 42 (10 ULg)
Full Text
Peer Reviewed
See detailInvestigation and reduction of discretization Variance in decision tree induction
Geurts, Pierre ULg; Wehenkel, Louis ULg

in Proceedings of ECML 2000, European Conference on Machine Learning (2000)

This paper focuses on the variance introduced by the discretization techniques used to handle continuous attributes in decision tree induction. Different discretization procedures are first studied ... [more ▼]

This paper focuses on the variance introduced by the discretization techniques used to handle continuous attributes in decision tree induction. Different discretization procedures are first studied empirically, then means to reduce the discretization variance are proposed. The experiments shows that discretization variance is large and that it is possible to reduce it significantly without notable computational costs. The resulting variance reduction mainly improves interpretability and stability of decision trees, and marginally their accuracy. [less ▲]

Detailed reference viewed: 7 (1 ULg)
Peer Reviewed
See detailPrésentation des Travaux de la section "Histoire de la linguistique"
Droixhe, Daniel ULg; Hassler, G.

in Englebert, A.; Pierrard, M.; Rosier, L. (Eds.) et al Actes du XXIIe Congrès International de Linguistique et Philologie Romanes : Volume I. L’histoire de la linguistique, médiatrice de théories (2000)

Detailed reference viewed: 24 (2 ULg)
Full Text
See detailInvestigation of height-resolved information in ground-based high-resolution Fourier infrared solar spectra above the Jungfraujoch
Barret, Brice; De Mazière, Martine; Demoulin, Philippe ULg et al

in Proceedings of the Quadriennal ozone symposium - Sapporo 2000 (2000)

Vertical profiles of HF, O3, and HNO3 have been retrieved from high-resolution solar spectra recorded at the Jungfraujoch observatory (Swiss Alps, 46.5°N latitude, 8.0°E longitude, 3.58 km altitude). Two ... [more ▼]

Vertical profiles of HF, O3, and HNO3 have been retrieved from high-resolution solar spectra recorded at the Jungfraujoch observatory (Swiss Alps, 46.5°N latitude, 8.0°E longitude, 3.58 km altitude). Two algorithms for the retrieval of vertical concentration profiles based on the Optimal Estimation Method have been used. The results of the vertical profile retrievals are compared to the Halogen Occultation Experiment (HALOE) profiles, to the Cryogenic Infrared Spectrometers and Telescope (CRISTA2) second mission (August 1997) profiles for HNO3 and O3 and also to nearby ozone sondes and lidar profile for O3. [less ▲]

Detailed reference viewed: 3 (0 ULg)
Peer Reviewed
See detailLes trajectoires d'insertion professionnelle des jeunes belges francophones
Guillaume, Jean-François ULg; Nandrin, Hugues

in Bajoit, Guy; Digneffe, Françoise; Jaspard, Jean-Marie (Eds.) et al Jeunesse et société. La socialisation des jeunes dans un monde en mutation (2000)

Dans des sociétés en profonde mutation, accéder au marché de l'emploi et s'y maintenir est devenu plus complexe. De plus en plus de trajectoires professionnelles sont marquées par la discontinuité et la ... [more ▼]

Dans des sociétés en profonde mutation, accéder au marché de l'emploi et s'y maintenir est devenu plus complexe. De plus en plus de trajectoires professionnelles sont marquées par la discontinuité et la précarité. Ces constats sont tirés de l'analyse de données collectées dans le cadre d'une analyse par panel (PSBH). Les auteurs envisagent plus précisément les questions suivantes : accède-t-on à un emploi plus tard, à un âge plus avancé ? La prime-insertion est-elle précédée d'un délai d'attente plus important ? Ou par une période de chômage ? Y a-t-il des différences entre les parcours masculins et féminins ? Dans quelle mesure le type ou le niveau de la formation qui a précédé influencent-ils les modalités d'entrée sur le marché de l'emploi ? [less ▲]

Detailed reference viewed: 129 (9 ULg)
Peer Reviewed
See detailAnalyse of the strategical decision making processes in a context of change: the case of inter-organisational cooperation between the Belgian police departments
Schoenaers, Frédéric ULg

in collectif (Ed.) Proceedings of the British Academy of Management 2000 Conference (2000)

Detailed reference viewed: 8 (0 ULg)
Full Text
See detailSelf-consistent approximations: application to a quasiparticle description of the thermodynamic properties of relativistic plasmas
Vanderheyden, Benoît ULg; Baym, Gordon

in Michael, Bonitz (Ed.) PROGRESS IN NONEQUILIBRIUM GREEN'S FUNCTIONS (2000)

We generalize the concept of conserving, Phi-derivable, approximations to relativistic field theories. Treating the interaction field as a dynamical degree of freedom, we derive the thermodynamical ... [more ▼]

We generalize the concept of conserving, Phi-derivable, approximations to relativistic field theories. Treating the interaction field as a dynamical degree of freedom, we derive the thermodynamical potential in terms of fully dressed propagators, an approach which allows us to resolve the entropy of a relativistic plasma into contributions from its interacting elementary excitations. We illustrate the derivation for a hot QED plasma of massless particles. We also discuss how the self-consistency of the treatment manifests itself into relationships between the contributions from interaction and matter fields. [less ▲]

Detailed reference viewed: 45 (7 ULg)
See detailModeling the impact of macroscale and mesoscale hydrodynamics on the space-time distribution of the Black sea’s plankton bloom annual cycle. Comparison of model results with CZCS observations
Grégoire, Marilaure ULg; Nihoul, J.

in Robinson, A.; Lermusiaux, P. (Eds.) Assimilation of biological data in coupled Physical/Ecosystem models (2000)

Detailed reference viewed: 16 (4 ULg)
Peer Reviewed
See detailDesign of concrete columns based on EC2 tabulated date - A critical review
Franssen, Jean-Marc ULg

in Proceedings of the 1st International Structures in Fire workshop (2000)

Detailed reference viewed: 78 (2 ULg)
Full Text
Peer Reviewed
See detailApplication of reinforcement learning to electrical power system closed-loop emergency control
Druet, Christophe; Ernst, Damien ULg; Wehenkel, Louis ULg

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

This paper investigates the use of reinforcement learning in electric power system emergency control. The approach consists of using numerical simulations together with on-policy Monte Carlo control to ... [more ▼]

This paper investigates the use of reinforcement learning in electric power system emergency control. The approach consists of using numerical simulations together with on-policy Monte Carlo control to determine a discrete switching control law to trip generators so as to avoid loss of synchronism. The proposed approach is tested on a model of a real large scale power system and results are compared with a quasi-optimal control law designed by a brute force approach for this system. [less ▲]

Detailed reference viewed: 34 (3 ULg)
See detailLe dessaisissement et la récusation - La loi du 6 mai 1997 visant à accélérer la procédure devant la Cour de cassation
Jacobs, Ann ULg

in Le point sur les procédures (1ère partie) (2000)

Detailed reference viewed: 20 (1 ULg)
See detailLa libération conditionnelle et la défense sociale
Jacobs, Ann ULg; Berbuto, Sandra

in Le point sur le droit pénal (2000)

Detailed reference viewed: 95 (10 ULg)
Peer Reviewed
See detailEffect of energy under- and protein normonutrition in the fattening of Belgian Blue double muscled cull cows
Cremer, Véronique; Cabaraux, Jean-François ULg; Hornick, Jean-Luc ULg et al

in Book of abstracts of the 51st Annual Meeting of the European Association for Animal Production (2000)

Detailed reference viewed: 15 (1 ULg)
Peer Reviewed
See detailEffect of methionine supplementation in the fattening diet of Belgian Blue double muscled cull cows
Cabaraux, Jean-François ULg; Cremer, Véronique; Hornick, Jean-Luc ULg et al

in Book of abstracts of the 51st Annual Meeting of the European Association for Animal Production (2000)

Detailed reference viewed: 11 (2 ULg)
Full Text
Peer Reviewed
See detailPreventive countermeasures for transient stability-constrained power systems
Ruiz-Vega, Daniel; Ernst, Damien ULg; Pavella, Mania ULg

in Proceedings of the VII Symposium of Specialists in Electric Operational and Expansion Planning (SEPOPE 2000) (2000)

A general transient stability control technique is applied to the design of preventive countermeasures consisting of rescheduling generators’ active power. The technique relies on SIME, a hybrid ... [more ▼]

A general transient stability control technique is applied to the design of preventive countermeasures consisting of rescheduling generators’ active power. The technique relies on SIME, a hybrid direct–time-domain method; and, like SIME, it preserves the accuracy of time-domain methods and their ability to handle any power system modeling, stability scenario and mode of instability. Its application to generation rescheduling may provide various patterns, able to comply with various operational specifics and strategies, as, for example, congestion management or available transfer capability calculations. The paper suggest how the technique may be shaped to choose automatically rescheduling patterns. A sample of such patterns are illustrated via simulations performed on an EPRI test system. [less ▲]

Detailed reference viewed: 334 (5 ULg)
Peer Reviewed
See detailMapping QTL influencing muscularity in a Texel x Romanov intercross
Marcq, Fabienne ULg; Elsen, J.-M.; Marot, V. et al

(2000)

Detailed reference viewed: 7 (0 ULg)
Full Text
Peer Reviewed
See detailOn-line transient stability constrained ATC calculations
Avilas-Rosales, R.; Ruiz-Vega, Daniel; Ernst, Damien ULg et al

in Proceedings of the IEEE Power Engineering Society Summer Meeting 2000 - Volume 2 (2000)

Transient Stability Assessment, preventive control measures and dynamic A X calculations are addressed for the new deregulated EMS system. The combination of time domain analysis, SIME and Optimal Power ... [more ▼]

Transient Stability Assessment, preventive control measures and dynamic A X calculations are addressed for the new deregulated EMS system. The combination of time domain analysis, SIME and Optimal Power Flow provide a reliable solution for future transaction requirements and the current operating point. [less ▲]

Detailed reference viewed: 43 (0 ULg)
Full Text
Peer Reviewed
See detailA contingency filtering, ranking and assessment technique for on-line transient stability studies
Ruiz-Vega, Daniel; Ernst, Damien ULg; Machado Ferreira, C. et al

in Proceedings of International Conference on Electric Utility Deregulation and Restructing and Power Technologies 2000 (2000)

Detailed reference viewed: 226 (0 ULg)
Peer Reviewed
See detailPhysically based and spatially distributed modeling of floods events: The "Faitou" concept
Dubois, Jérôme; Pirotton, Michel ULg; Schleiss, Anton

in International Symposium on Flood Defence (2000)

Detailed reference viewed: 9 (1 ULg)