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Peer Reviewed
See detailOptimisation des arcs paraboliques et en chaînette – aide à la conception sur base d'indicateurs morphologiques
Latteur, Pierre ULg; Samyn, Philippe; De Wilde, Patrick

in Revue Française de Génie Civil (2001), 5

Detailed reference viewed: 25 (0 ULg)
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See detailOptimisation des débits des couches d'une transmission vidéo multipoint avec une meilleure prise en compte du surcoût d'encodage
Soldani, Cyril ULg; Leduc, Guy ULg

in CFIP'2009 (2009, October 12)

In video stream transmission, one often proposes to solve the problem of the heterogeneity of the receivers by dividing the stream into several cumulative layers distributed over multicast transmission. A ... [more ▼]

In video stream transmission, one often proposes to solve the problem of the heterogeneity of the receivers by dividing the stream into several cumulative layers distributed over multicast transmission. A dynamic adaptation by the source of the number and size of layer bit-rates to the set of its receivers allows a better usage of the network resources. Efficient algorithms have been designed to do this adaptation. However, the encoding of a video stream in layers incurs an overhead relatively to the single-layer encoding of the same stream. A too naive modeling of this overhead causes a suboptimal allocation of bit-rate. We propose an improvement of the layer bit-rate adaptation algorithm by dynamic programming to take a finer overhead model and other encoder constraints into account. To this end, we introduce a more general overhead model. As our algorithm is of high complexity, we also present a heuristic allowing to find quickly a solution which is near the optimum and we test this heuristic by simulations based on our model. [less ▲]

Detailed reference viewed: 45 (13 ULg)
See detailOptimisation des mats d’éoliennes terrestres – développement du logiciel Eol (suite)
Rigo, Philippe ULg; Pircababu, E.; Bair, F.

Report (2008)

Detailed reference viewed: 16 (2 ULg)
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See detailOptimisation des paramètres du procédé de thixoforgeage des alliages d'aluminium 7075 à haute fraction solide
Vaneetveld, Grégory ULg

Doctoral thesis (2009)

Wrought 7075 aluminium alloy functional parts with complex geometry are mostly shaped by machining. For a mass production, the machining cost can be reduced by shaping a draft by forging. It is more ... [more ▼]

Wrought 7075 aluminium alloy functional parts with complex geometry are mostly shaped by machining. For a mass production, the machining cost can be reduced by shaping a draft by forging. It is more interesting to produce a near-net-shape draft to reduce machining. To shape a complex geometry part in one step, the viscosity of the material has to be sufficiently low. This low viscosity requires the generation of a liquid phase in the material but this phase introduces defects in the wrought alloy such as hot cracking, porosity, shrinkage porosity, large shrinkage, macrosegregation solid-liquid. These defects can be reduced by limiting the liquid fraction to 0.1 and thus using thixoforging process. 7075 alloy is particularly sensitive to hot cracking, a low shrinkage is a benefit. Recristallisation process is choosen to obtain a semi-solid globular material. This process uses recrystallisation to transform extruded material into a material that shows a shear thinning-thixotropic behaviour. Heating and extrusion tests help to study the influence of various process parameters on the forming load and the quality of thixoforged parts. We will adjust the parameters of heating and forming on a tool specially designed to thixoforge parts from simple to complex geometry. A study of the influence of parameters on the mechanical properties and the quality of the parts showed very good potential for the thixoforging of 7075 alloy. [less ▲]

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See detailOptimisation des PML dans des contextes discrets
Modave, Axel ULg; Delhez, Eric ULg; Geuzaine, Christophe ULg

Conference (2012, May 21)

Detailed reference viewed: 49 (8 ULg)
See detailL'optimisation des schémas d'échantillonnage : noveaux concepts, nouvelles méthodes
Halleux, Isabelle ULg; Nix, Philippe

in Techniques et stratégies de l'échantillonnage de l'environnement (1991)

Detailed reference viewed: 7 (0 ULg)
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See detailL’optimisation des structures navales: minimisation du coût de construction de la coque métallique
Rigo, Philippe ULg

in Institut pour la Promotion des Sciences de l’Ingénieur (IPSI) (2002)

Detailed reference viewed: 65 (2 ULg)
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See detailOptimisation des treillis à membrure supérieure variable sur base de la théorie des indicateurs morphologiques
Moureaux, Christine ULg; Latteur, Pierre ULg

in Revue scientifique des instituts supérieurs industriels francophones de Belgique (2004), 18

Detailed reference viewed: 14 (4 ULg)
See detailOptimisation du 144.000m3 LNG gaz carrier
Rigo, Philippe ULg

Report (2002)

Detailed reference viewed: 13 (1 ULg)
See detailOptimisation du CORSAIRE 11000 (fast Ferry)
Rigo, Philippe ULg

Report (1999)

Detailed reference viewed: 28 (0 ULg)
Peer Reviewed
See detailL'optimisation du fonctionnement dans la vie quotidienne chez des patients Alzheimer à un stade débutant
Adam, Stéphane ULg

in Lettre du Neurologue (La) : le Courrier du Spécialiste (2000, April), (Hors-série),

Detailed reference viewed: 21 (1 ULg)
See detailOptimisation du plan parcellaire d'une exploitation agricole: une application de la theorie des graphes.
Dupont, Pascal ULg

in Bulletin des Recherches Agronomiques de Gembloux (1994), 29(3),

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See detailOptimisation du procédé de captage de CO2 dans des solvants aminés
Léonard, Grégoire ULg; Heyen, Georges ULg

in Récents Progrès en Génie des Procédés (2011), 101

Post-combustion carbon capture in amine solvents is currently one of the most promising technologies to prevent large quantities of CO2 from being emitted into the atmosphere. Two models (equilibrium and ... [more ▼]

Post-combustion carbon capture in amine solvents is currently one of the most promising technologies to prevent large quantities of CO2 from being emitted into the atmosphere. Two models (equilibrium and kinetics) have been built using the Aspen Plus software in order to optimise the capture process. A sensitivity study at constant CO2 capture rate has shown that the solvent concentration, its flow rate and its regenerating pressure have the largest influence on the process energy requirement. Different process flowsheet modifications such as the lean vapor compression, an absorber inter-cooling and the split-flow configuration have been simulated as well, decreasing the energy cost of the process. Tests on a pilot installation will be made that will help to validate this model. [less ▲]

Detailed reference viewed: 103 (17 ULg)
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See detailOptimisation du protocole GPG
Hanzen, Christian ULg; Boudry, B.

in Point Vétérinaire (2003), 34(240), 44-46

Les facteurs susceptibles d’influencer les performances de reproduction permises par le protocole GPG sont multiples. L’apparition de l’oestrus et sa durée, la fréquence de l’ovulation, la croissance ... [more ▼]

Les facteurs susceptibles d’influencer les performances de reproduction permises par le protocole GPG sont multiples. L’apparition de l’oestrus et sa durée, la fréquence de l’ovulation, la croissance folliculaire, tout comme la progestéronémie, sont susceptibles d’être influencés par le stade du cycle auquel le protocole est mis en place. Le taux de gestation est d’autant plus élevé que la proportion d’animaux en anoestrus dans le troupeau est faible. Ceci explique sans doute en partie pourquoi la fertilité se trouve améliorée lorsque l’insémination suivant le traitement est effectuée après le 75e jour de lactation. De même, des résultats préliminaires confirment l’application potentielle du protocole au traitement des kystes ovariens. [less ▲]

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See detailOptimisation du traitement pharmacologique chez un patient avec un diabete de type 2 nouvellement diagnostique.
De Flines, Jenny ULg; Radermecker, Régis ULg; Jandrain, Bernard ULg et al

in Revue Médicale de Liège (2009), 64(2), 109-14

The diabetic patient, when type 2 diabetes is newly diagnosed, raises a therapeutic problem commonly observed in clinical practice, which is more complex than expected at first glance. The physician has ... [more ▼]

The diabetic patient, when type 2 diabetes is newly diagnosed, raises a therapeutic problem commonly observed in clinical practice, which is more complex than expected at first glance. The physician has to select the most appropriate antidiabetic oral agent as first choice, to consider the potential of using combined glucose-lowering therapies, to fix glycaemic target taking into account the individual benefit/risk ratio, and to offer the best protection against cardiovascular complications. The present clinical case illustrates such therapeutic problem describing a patient with a high cardiovascular risk profile who experienced a hypoglycaemic episode after the prescription of glibenclamide following the discovery of a moderate hyperglycaemia. [less ▲]

Detailed reference viewed: 148 (6 ULg)
See detailOptimisation du Trimaran MISTRAL (bateau rapide)
Rigo, Philippe ULg

Report (2000)

Detailed reference viewed: 23 (0 ULg)