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See detailLes chemins de la compréhension : brochure d'accompagnement au film éponyme de Terwagne et Widart
Terwagne, Serge; Widart, Nicole; Lafontaine, Dominique ULg

Report (1996)

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See detailLa valorisation de productions horticoles wallonnes : situation et perspectives
Lebailly, Philippe ULg; Barthelemy, P.-A.; Moutteau, M. et al

Report (1996)

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See detailEtude sur les flux entre l'agriculture et l'agro-alimentaire wallons
Moutteau, M.; Burny, Philippe ULg; Barthelemy, P.-A. et al

Report (1996)

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See detailConception et expérimentation d'une méthodologie pour l'identification et l'évaluation des incidences d'un projet sur l'environnement. - Partie "Normes et Mesures".
Nicolas, Jacques ULg; Bauraing, Eddy; Guyon, Francis et al

Report (1996)

The research project consisted in developing and testing a guide to facilitate environmental impact assessment for engineer offices. A first part developed the methodology, based on a grid crossing ... [more ▼]

The research project consisted in developing and testing a guide to facilitate environmental impact assessment for engineer offices. A first part developed the methodology, based on a grid crossing disturbances generated by the studied project and the characteristics of areas of the environment. The present part summarizes the various possibilities of measurement of parameters and the main standards existing in Walloon Region for those parameters. [less ▲]

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See detailApplication du programme PEGASE au bassin de la Zorn. Département du Bas-Rhin (France)
Everbecq, Etienne ULg; Deliège, Jean-François ULg

Report (1996)

Le Conseil Général du Bas-Rhin a décidé la réalisation d'un Schéma Directeur Départemental d'Assainissement. Dans le cadre de cette phase de définition de la méthodologie, le Conseil Général a chargé l ... [more ▼]

Le Conseil Général du Bas-Rhin a décidé la réalisation d'un Schéma Directeur Départemental d'Assainissement. Dans le cadre de cette phase de définition de la méthodologie, le Conseil Général a chargé l'Université de Liège de réaliser la modélisation du calcul des flux polluants sur le bassin de la Zorn (affluent de la Moder). Cette modélisation a été réalisée en utilisant le modèle PEGASE (Planification et Gestion de l'Assainissement des Eaux), en cours d'adaptation pour le bassin géré par l'Agence de l'Eau Rhin-Meuse [less ▲]

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See detailEffet de la souplesse de la contre-pointe sur le défaut de cylindricité des pièces tournées
Debongnie, Jean-François ULg

Report (1995)

This report examines the effect of the live center flexibility on the form errors in lathe operations. It was originated from test results exhibiting a diameter having a maximum and a minimum, a fact that ... [more ▼]

This report examines the effect of the live center flexibility on the form errors in lathe operations. It was originated from test results exhibiting a diameter having a maximum and a minimum, a fact that highly surprised us. The problem is here analytically studied, and it is found that such form errors must effectively be obtained. [less ▲]

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See detailSur la mesure des pressions de coupe lors d'un fraisage en bout
Debongnie, Jean-François ULg

Report (1995)

In turning operations, the measure of cutting pressures does not present difficulties, as these pressures are obtained by dividing by the cutting section the forces whose three components may be measured ... [more ▼]

In turning operations, the measure of cutting pressures does not present difficulties, as these pressures are obtained by dividing by the cutting section the forces whose three components may be measured. The case of milling operations is completely different, firstly because of the tool rotation, and secoundly because the cutting section continually varies. Therefore, the cutting pressure has to be measured indirectly, using a model of the cutting force variation with the cutting section. In this paper, two such models are presented, the first one assuming that the cutting pressure is independent of the cutting section, the second one using Kienzle's model. [less ▲]

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See detailEtude de l'impact de l'intensification agricole sur la qualité des sols et des eaux dans le périmètre irrigué des Doukkala (Maroc)
Soudi, B.; Chiang, C.; Badraoui, M. et al

Report (1995)

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See detailThe hydrodynamics of the Western Mediterranean Sea
Euromodel group; Nihoul, Jacques ULg; Beckers, Jean-Marie ULg et al

Report (1995)

Euromodel is devoted to process studies in relation to the description, understanding and simulation of the seasonal and mesoscale variability of the general circulation of the Western Mediterranean. Deep ... [more ▼]

Euromodel is devoted to process studies in relation to the description, understanding and simulation of the seasonal and mesoscale variability of the general circulation of the Western Mediterranean. Deep water formation drives the large cyclonic gyre observed in the northern basin. Some seasonal and mesoscale characteristics of the Northern, Tyrrhenian and Western Corsican Currents are specifies. The flow throuch the strait of Gibraltar is not hydraulically controlled. Potential vorticity conservation and changes in the meridional pressure gradients explain the formation of the western Alboran Sea gyre. Cyclonic eddies at its periphery are observed and modelled. The Almeria-Oran jet-front system is described in terms of geostrophic adjustment of Modified Atlantic Water and Mediterranean Water. Algerian eddies are linked to baroclinic instability of the current. A cyclonic circulation around the continental slope in the whole western basin is observed at depth. Upper ocean mesoscale variability is related to downward penetration of near-inertial motions as observed near the Catalan front. In the Balearic Sea, spatial and temporal variability of two shelf / slope fronts influences the large scale dynamics. The MAST 1 phase of Euromodel, initiales a numerical simulation of the Western Mediterranean : the sole forcing by the density gradients throuh the straites of Gibraltar and Sicily quaalitatively reproduces the basin scale cycloni surface and intermediate flows and the coastal currents. [less ▲]

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See detailTHE CERT project : final report
Denis, Brigitte ULg

Report (1995)

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See detailVhrs - the Very High Resolution Spectrograph for the VLT
Magain, Pierre ULg; Dekker, H.; Delabre, B.

Report (1995)

Not Available

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See detailPrise en compte de l'enlèvement de matière dans le calcul des raideurs
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Deltour, Béatrice et al

Report (1995)

In the frame of the feasability study of machining simulation, this report is devoted to the study of the stiffness variation during the machining process

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See detailModèles de forces de coupe
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Deltour, Béatrice et al

Report (1995)

In the frame of the feasability study of a machining simulation, this report is devoted to the prediction of the cutting forces.

Detailed reference viewed: 44 (3 ULg)
See detailLe rôle du médecin généraliste en soins palliatifs
Devos, M.; Reginster-Haneuse, G.; Gosset, Christiane ULg et al

Report (1995)

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See detailLe transport combiné en Belgique
Jacob, Damien ULg

Report (1995)

Detailed reference viewed: 47 (4 ULg)
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See detailModélisation du brochage
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Deltour, Béatrice et al

Report (1995)

In the frame of the feasability study of a machining simulation, this report is devoted to the modelling of the broaching process

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See detailDescription de la loi de mouvement de l'outil
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Deltour, Béatrice et al

Report (1995)

In the frame of the development of a simulation tool for machining, this report is devoted to the description of the tool motion.

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See detailCatalogue des cas-tests avec justification des motifs
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Deltour, Béatrice et al

Report (1995)

In this first report of a research for RENAULT, a preliminary list of benchmarks is defined.

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See detailProcédures d'identification des paramètres de charge
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Deltour, Béatrice et al

Report (1995)

In the frame of the feasability study of a machining simulation, this report describes how to compute the nodal components of the cutting forces on the finite element mesh.

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See detailRecommandations relatives aux maillages
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Deltour, Béatrice et al

Report (1995)

In the frame of the feasability study of a machining simulation tool, this report is devoted to the obtention of a suitable finite element mesh of the work.

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See detailDescription d'une méthode de reconstitution de la surface usinée
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Deltour, Béatrice et al

Report (1995)

In the frame of the feasability study of a machining simulation tool, this report is devoted to the obtention of the machined surface from a series of finite element computations

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See detailProcedures de limitation des cas de charge
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Deltour, Béatrice et al

Report (1995)

In the frame of the feasability study of a machining simulation tool, this report is devoted to special procedures allowing a reduction of the computed load cases in order to reduce the computational time.

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See detailEtude des gommes arabiques et de leurs procédés de mise en oeuvre dans des émulsions contenant des arômes.
Vanzeveren, Emmanuel; Marlier, Michel; Fauconnier, Marie-Laure ULg et al

Report (1995)

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See detailProgress Report on the Development of the Automatic Target Recognition System for the UGV/RSTA LADAR
Verly, Jacques ULg; Dudgeon, Dan E.; Lacoss, Richard T

Report (1995)

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See detailExpertise du projet sur le site Rom (Eupen)
Merenne-Schoumaker, Bernadette ULg; Halleux, Jean-Marie ULg; Snoeck, E.

Report (1995)

Detailed reference viewed: 7 (0 ULg)
See detailEtude de la filière "pommes de terre" en Pologne
Gazinski, Benon; Burny, Philippe ULg

Report (1995)

Detailed reference viewed: 5 (2 ULg)
See detailLa valorisation de productions agricoles wallonnes : situation et perspectives
Lebailly, Philippe ULg; Burny, Philippe ULg; Barthelemy, P.-A. et al

Report (1995)

Detailed reference viewed: 6 (0 ULg)
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See detailPrévision analytique des défauts d'usinage en chariotage
Debongnie, Jean-François ULg

Report (1994)

This report presents an analytical approach leading to a prediction of the form errors arising when turning a bar, in the three classical fixture configurations. This study consists in determing the ... [more ▼]

This report presents an analytical approach leading to a prediction of the form errors arising when turning a bar, in the three classical fixture configurations. This study consists in determing the radial displacement at the tool end, due to the cutting forces. This displacement, will be retreived with the opposite sign, as a diameter error. Traditional analyses only consider the passive component of the cutting force. Here, the effect of the feed force is also considered. [less ▲]

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See detailFormations des enseignants du fondamental : rapport d'évaluation
Giot, Bernadette ULg; Stegen, P.; Crahay, Marcel ULg

Report (1994)

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See detailL'opinion publique face au problème du vieillissement. Exemple de l'arrondissement de Liège
Jacquemain, Marc ULg; Vandekeere, Michel

Report (1994)

Le rapport analyse les résultats d'une enquête portant sur la perception du vieillissement, de son impact et des politiques publiques les mieux à même de les résoudre. Le rapport montre la difficulté qu ... [more ▼]

Le rapport analyse les résultats d'une enquête portant sur la perception du vieillissement, de son impact et des politiques publiques les mieux à même de les résoudre. Le rapport montre la difficulté qu'il y a à défendre une politique de précaution face au vieillissement, l'opinion n'étant pas prête à accepter facilement des arbitrages entre pensions, âge de la retraite et montant des cotisations. Les personnes âgées sont cependant perçues comme une catégorie particulièrement légitime pour l'action publique. [less ▲]

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See detailNamur-Bilbao-Posdam : Etude de programmation énergétique urbaine de la ville de Namur
Hauglustaine, Jean-Marie ULg; Ons, Pascal

Report (1994)

Three axes of reflection: - extension of the gas distribution network; - feasibility of a wire data bus; - energy saving in the buildings in the town of Namur;

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See detailModelling Young’s modulus on small clear specimens in relation to silvicultural treatment.
Jourez, Benoît ULg; Leclercq, André

Report (1994)

The aim of this research work performed in Task 11 "Modelling Young's modulus on small clear specimens in relation to silvicultural treatments" was the modelling of Young's modulus (MOE) on small clear ... [more ▼]

The aim of this research work performed in Task 11 "Modelling Young's modulus on small clear specimens in relation to silvicultural treatments" was the modelling of Young's modulus (MOE) on small clear specimens of 24 Belgian Norway spruces in relation with the silvicultural treatment. The aim of the research was also to compare Young's modulus on small clear specimens with Young's modulus on commercial size specimens with a view to defining the rate of prediction of wood quality of specimens including the natural timber defects. This work is corresponding to one task among the twelve of a large ECC Project entitled "SilvicuItural control and non destructive assessment of timber quality in plantation grown Spruces and Douglas fir" for which 210 trees have been sampled through 6 different European countries. The experimental raw material comes from the southern and eastern part<; of Belgium and concerns four different kinds of stands characterized by the site productivity class and the thinning intensity. Within each stand, the trees have been sampled in three different social positions classes. The small clear specimens have been marked off with reference to the radial and axial positions inside the 24 trees. On the whole 350 clear wood specimens have been selected and tested by two different laboratories in order to get young's modulus by a non destructive four points flexural method described by the French Standard NF B 51-016. Young's modulus appears to be positively related with specific gravity and negatively related with growth ring width. Stands growing on high productive sites or those submitted to low thinnings and also suppressed trees give rise to a stiffer wood. Among all these factors, only the social position of the tree within the stand influences significantly the Young's modulus values. Nevertheless, a slow growth producing a heavier timber is not always linked with a stiffer wood. Young's modulus differences between juvenile and adult wood vary in connection with the specific gravity class considered. In other words, juvenile wood is stiffer than adult wood when referring to low density classes, but adult wood becomes stiffer than juvenile wood when referring to high density classes. That means that the stiffness of adult wood is more sensitive to changes in specific gravity than the stiffness of juvenile wood. The distribution of Young's modulus in relation with specific gravity shows a higher variability when specific gravity increases. In searching the reasons for a higher Young's modulus variability when specific gravity increases by looking back to the population of clear specimens, we point out a very low slope of grain on some specimens and above all the presence of compression wood on other specimens. When rejecting these defects, then it appears that Young's modulus is more strongly related to specific gravity, thus giving rise to more accurate models. Among all these models, the best one is corresponding to a combination of variables such as specific gravity and growth ring width per sampling level within the tree. The variance analysis of residues of each model has revealed a tree effect always very highly significant. On the opposite, the other factors, as site productivity, thinning intensity and social position of the tree within the stand, have no significant effect on Young's modulus values. That means that inter trees variability is far higher than the other sources of variation (intra tree variability, site productivity variability, thinning intensity variability and social position variability). This also means that the general model established is valid whatever the silvicultural treatment could be. [less ▲]

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See detailConception de capteurs intelligents pour la mesure de la qualité de l'eau et du sol.
Nicolas, Jacques ULg; Hanson, Alain; Martin, Valérie et al

Report (1994)

In the frame of a "FIRST" project initiated by the Walloon Region, the research group developed a porous sensor able to measure the temperature and the water content of the soil by a thermal procedure ... [more ▼]

In the frame of a "FIRST" project initiated by the Walloon Region, the research group developed a porous sensor able to measure the temperature and the water content of the soil by a thermal procedure. The water content is deduced from the measurement of the thermal diffusivity. The sensor allows a continuous monitoring of the water content. [less ▲]

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See detailL'enseignement spécial en chiffres
Giot, Bernadette ULg; Stegen, Pierre; Crahay, Marcel ULg

Report (1994)

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See detailRéseau d'actions locales intégrées pour l'enfance : Monographie des actions menées à Cheratte
Akhan, O.; Bocken, J.; Manço, Altay ULg et al

Report (1994)

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See detailRégionalisation de la charge d'intérêts de la dette publique
Jurion, Bernard ULg; Ligot, C.; Mahy, B. et al

Report (1994)

Detailed reference viewed: 36 (3 ULg)
See detailL'action des Responsables Energie dans les bâtiments tertiaires : des projets qui aboutissent
Hauglustaine, Jean-Marie ULg

Report (1994)

Vis-a-vis the crisis of energy, the administrations and the public tertiary sector did not remain inactive in Wallonia. On the contrary, of many profets relating to the Rational Use of Energy (RUE) were ... [more ▼]

Vis-a-vis the crisis of energy, the administrations and the public tertiary sector did not remain inactive in Wallonia. On the contrary, of many profets relating to the Rational Use of Energy (RUE) were conceived and realized by persons in charge who took in heart an improvement of their energy situation. The report/ratio which reports the history of some of these projects concluded by dynamic actors, who were able to include/understand their energy problems, there to distinguish ways of possible improvements and to give them life. The objective of this booklet is not to draw up the exhaustive list of these projects, but rather to quote examples of actions RUE conceived and carried out in the respect of their context. [less ▲]

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See detailThe GPS Observation Campaigns on the Mt. Etna Volcano from 1992 to 1994
Bruyninx, Carine; Warnant, René ULg

Report (1994)

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See detailVers un encadrement environnemental de l'agriculture
Mormont, Marc ULg

Report (1994)

This research examines the various ways environmental policies are framing agriculture. Fron different case stusies in France and Belgium it argues that environemental challenges, while being felt as an ... [more ▼]

This research examines the various ways environmental policies are framing agriculture. Fron different case stusies in France and Belgium it argues that environemental challenges, while being felt as an accusation by farmers, can be considered as a further modernisation of agriculture. [less ▲]

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See detailRetirement and growing old: which model of protection?
Delhausse, B.; Pestieau, Pierre ULg; Perelman, Sergio ULg

Report (1994)

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See detailEtude des gommes arabiques et de leurs procédés de mise en oeuvre dans des émulsions contenant des arômes.
Vanzeveren, Emmanuel; Marlier, Michel; Fauconnier, Marie-Laure ULg et al

Report (1994)

Detailed reference viewed: 5 (1 ULg)
See detailThree-dimensional Object Recognition Using Appearance Models
Verly, Jacques ULg; Williams, Brian D.; Delanoy, Richard L.

Report (1994)

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See detailModelling Bark Thickness in the tree in relation to silviculturaltreatment
Jourez, Benoît ULg; Leclercq, André

Report (1993)

Based upon a sampling of 186 trees of Norway spruce, Sitka spruce and Douglas fir from Belgium (24 Norway spruce), Denmark (24 Norway spruce and 24 Sitka spruce), France (24 Norway spruce), Germany (24 ... [more ▼]

Based upon a sampling of 186 trees of Norway spruce, Sitka spruce and Douglas fir from Belgium (24 Norway spruce), Denmark (24 Norway spruce and 24 Sitka spruce), France (24 Norway spruce), Germany (24 Douglas fir), Great Britain (24 Sitka spruce) and Italy (24 Douglas fir) specially cut for the Project, this study which is a part (Task 6) of a larger ECC Project, has shown the effects of the tree, its Social position in the stand, the thinning intensity and the site productivity on bark thickness and bark volume. All along the stem, bark thickness has a particular profile characterized by a steep decrease from the bottom up to a given height variable from species to species, due to a bottom effect, then being relatively constant up to the living crown base level and finally decreasing slightly in the living crown part. The most important bottom effect has been observed on Douglas fir. Referring to a variance components analysis, variability in bark thickness is mainly due to the tree itself and the stand factor which globalized the cumulated effect of thinning intensity and site productivity. However, it appears that the trees selected by couple for each Social position in each stand are similar whatever the species could be, and may be considered, in fact, as true replicates. For each species, the Social position of the tree in the stand influences bark thickness in the same way. In all cases, dominant trees have indeed the thickest bark, whilst suppressed trees are always characterized by the thinnest bark and co-dominant trees range to this respect in an intermediate position. The effect of site productivity is not clear through this sampling, due to interferences of different factors, mainly the differences in tree age which let appear a significant effect of the country (differences in growing conditions and between productivity classes). Nevertheless, when tree age is almost the same in different countries, the general trends are going in the direction of a decrease of bark thickness when the site productivity becomes lower. The same general trends are observed in connection with the thinning intensity because bark thickness generally decreases when thinnings are less intense. In fact, bark thickness is far to be constant according to the stand selection criteria (site productivity, thinning intensity) but is noticeably affected by the tree selection criteria (Social position). Bark thickness, bark volume and amount of bark are mainly depending on the growing conditions with a major effect of the Social position compared to the thinning intensity and the site productivity. Unfortunately, a general model was unsuitable for an accurate prediction of bark thickness. The best predicted values of bark thickness was obtained in using common models, linear ones for Norway spruce and Sitka spruce but non linear ones for Douglas fir. [less ▲]

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See detailLiège Santé - Document Indicateurs de santé
Gosset, Christiane ULg; Debaar, J.

Report (1993)

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See detailStress strain relationship of Tempcore steel after heating up to 650°C and cooling
Franssen, Jean-Marc ULg

Report (1993)

Reinforcing bars of 12 mm and 25 mm have been tested, at room temperature, at elevated temperatures (steady state and transient conditions), and after cooling from elevated temperatures. No decrease of ... [more ▼]

Reinforcing bars of 12 mm and 25 mm have been tested, at room temperature, at elevated temperatures (steady state and transient conditions), and after cooling from elevated temperatures. No decrease of the residual strength was observed as long as the elevated temperature has not exceeded 600°C. A slight decrease seems to appear for elevated temperatures beyond 600°C. Additional test for elevated temperatures higher than 680°C should ideally be performed to confirm this trend. [less ▲]

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See detailThermal elongation of concrete during heating up to 700°C and cooling; Stress-strain relationship of Tempcore steel after heating up to 650°C and cooling
Franssen, Jean-Marc ULg

Report (1993)

Experimental tests are reported on the thermal elongation of unloaded concrete specimen during heating and cooling. Steel reinforcing bars of Tempcore with diameters of 12 and 25 mm were tested at ... [more ▼]

Experimental tests are reported on the thermal elongation of unloaded concrete specimen during heating and cooling. Steel reinforcing bars of Tempcore with diameters of 12 and 25 mm were tested at elevated temperature (steady state as well as transient situation) and also after cooling down to 20°C. [less ▲]

Detailed reference viewed: 80 (8 ULg)
See detailPixel-Level Fusion Using ”Interest” Images
Delanoy, Richard L.; Verly, Jacques ULg; Dudgeon, Dan E.

Report (1993)

See detailOrganisation and Processing Status of the ROB GPS Network on Etna
Bruyninx, Carine; Warnant, René ULg

Report (1993)

Detailed reference viewed: 6 (0 ULg)