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Peer Reviewed
See detailOptimised contrast enhanced nanoCT for volumetric analyses of in vitro manufactured tissue-engineered bone constructs
Sonnaert, Maarten; Kerckhofs, Greet ULg; Papantoniou, Ioannis et al

Conference (2013)

Detailed reference viewed: 8 (1 ULg)
See detailOptimiser l'expression orale en travaillant sur les stratégies de communication (1re partie)
Dahmen, Manfred; Doppagne, Véronique ULg; Simons, Germain ULg

Conference given outside the academic context (2001)

Detailed reference viewed: 6 (2 ULg)
See detailOptimiser l'expression orale en travaillant sur les stratégies de communication (2nde partie).
Dahmen, Manfred; Doppagne, Véronique ULg; Simons, Germain ULg

Conference given outside the academic context (2002)

Detailed reference viewed: 10 (2 ULg)
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See detailOptimiser l'usage des fourrages auto-produits et viser l'autonomie protéique
Beckers, Yves ULg

Conference given outside the academic context (2011)

Detailed reference viewed: 21 (5 ULg)
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See detailOptimiser une prise de décision fondée sur la preuve scientifique
Vandeweerd, Jean-Michel ULg; Vandenput, Sandrina ULg

in Point Vétérinaire (2009), 40(298), 37-40

les deux premières étapes de la démarche de la médecine factuelle sont la formulation correcte de la question posée et l'élaboration précise de la requête dans les bases de données bibliographiques

Detailed reference viewed: 35 (11 ULg)
See detailOptimisez votre maison
Guillemeau, Jean-Marc ULg; Hauglustaine, Jean-Marie ULg; Wagelmans, Paul ULg

Book (2003)

A comfortable house, limited costs of heating and reduced CO2 emissions… Three opposite objectives? Nothing is less true! The thermal regulation in Walloon region indeed aims at reconciling them. The ... [more ▼]

A comfortable house, limited costs of heating and reduced CO2 emissions… Three opposite objectives? Nothing is less true! The thermal regulation in Walloon region indeed aims at reconciling them. The great principles in the middle of this regulation relate to the good orientation, the good insulation and the good ventilation of the dwelling as well as the choice of a system of adequate heating. This booklet explains these principles and invaluable councils into practice to put them at the moment design or restoration of your house gives you. [less ▲]

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Peer Reviewed
See detailOptimising a cascade of hydroelectric power stations with the WOLF package
Erpicum, Sébastien ULg; Archambeau, Pierre ULg; Dewals, Benjamin ULg et al

in Brebbia, C. A. (Ed.) Water Ressources Management (2003)

Original free-surface flow solvers have been developed by the HACH during the last years. The resulting fully integrated WOLF package allows engineers to study a very wide range of free surface flows ... [more ▼]

Original free-surface flow solvers have been developed by the HACH during the last years. The resulting fully integrated WOLF package allows engineers to study a very wide range of free surface flows situations. Successful and accurate computations are performed for phenomena as various as hydrological run-offs and dam breaking in quasi 3 dimensions including solid transport effects, as well as rivers networks modelling with explicit exchanges between river paths. All the models, physically based, use efficient and original numerical methods to solve continuous or discontinuous free-surface flow equations. They handle structured or unstructured grids with both first and second order accurate explicit or implicit algorithms in time and space. WOLF also includes powerful user-friendly pre- and post-processing with 2D and 3D animated visualizations as well as a parameters optimization software interconnected with all the package components and based on the innovating method of genetic algorithms. In this paper, the production of the hydroelectric power plants installed on a 60 km long section of the rivers Amblève and Warche in Belgium is presented in details to illustrate the numerical calculation and optimization process. The river network is modeled using real natural topographic data. Hydrological balance is closed and roughness coefficients are calibrated from water level and discharge field measurements. Hydroelectric production is optimized by an automatic calibration of the parameters of the hydrogram injected in the network from the Robertville dam. This approach leads to a substantial gain in both hydroelectric production and financial benefits and deals with all management and security criteria. [less ▲]

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Peer Reviewed
See detailOptimising monitoring in the management of Crohn's disease: a physician's perspective.
Papay, Pavol; Ignjatovic, Ana; Karmiris, Konstantinos et al

in Journal of Crohn's & colitis (2013), 7(8), 653-69

Management of Crohn's disease has traditionally placed high value on subjective symptom assessment; however, it is increasingly appreciated that patient symptoms and objective parameters of inflammation ... [more ▼]

Management of Crohn's disease has traditionally placed high value on subjective symptom assessment; however, it is increasingly appreciated that patient symptoms and objective parameters of inflammation can be disconnected. Therefore, strategies that objectively monitor inflammatory activity should be utilised throughout the disease course to optimise patient management. Initially, a thorough assessment of the severity, location and extent of disease is needed to ensure a correct diagnosis, identify any complications, help assess prognosis and select appropriate therapy. During follow-up, clinical decision-making should be driven by disease activity monitoring, with the aim of optimising treatment for tight disease control. However, few data exist to guide the choice of monitoring tools and the frequency of their use. Furthermore, adaption of monitoring strategies for symptomatic, asymptomatic and post-operative patients has not been well defined. The Annual excHangE on the ADvances in Inflammatory Bowel Disease (IBD Ahead) 2011 educational programme, which included approximately 600 gastroenterologists from 36 countries, has developed practice recommendations for the optimal monitoring of Crohn's disease based on evidence and/or expert opinion. These recommendations address the need to incorporate different modalities of disease assessment (symptom and endoscopic assessment, measurement of biomarkers of inflammatory activity and cross-sectional imaging) into robust monitoring. Furthermore, the importance of measuring and recording parameters in a standardised fashion to enable longitudinal evaluation of disease activity is highlighted. [less ▲]

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See detailOptimising strobilurine fungicide uses in a reasoned protection of winter wheat
Meeùs, Patrick; Bodson, Bernard ULg

in Mededelingen van de Faculteit Landbouwkundige en Toegepaste Biologische Wetenschappen (Rijksuniversiteit te Gent) (1998, May 05), 63(3b), 1023-1027

For three years, strobilurine fungicides are applied at different growth stages of a winter wheat crop in a single application and in a programme of treatments. The trial results show the interest of ... [more ▼]

For three years, strobilurine fungicides are applied at different growth stages of a winter wheat crop in a single application and in a programme of treatments. The trial results show the interest of these recent products for the protection of the upper organs: flag leaf and ear. [less ▲]

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See detailHet optimisme omarmen
Verjans, Pierre ULg

Article for general public (2011)

Onderhandelingen zijn in België een slopende wisselwerking tussen cynische keuzes en idealisme. Tijdens zo'n crisis gaan de zaken gewoon door in de gemeenschappen, de gewesten, de federale staat, de ... [more ▼]

Onderhandelingen zijn in België een slopende wisselwerking tussen cynische keuzes en idealisme. Tijdens zo'n crisis gaan de zaken gewoon door in de gemeenschappen, de gewesten, de federale staat, de gemeenten en provincies. [less ▲]

Detailed reference viewed: 17 (2 ULg)
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See detailL'optimisme vigilant de Jean Englebert
Durand, Pascal ULg

Article for general public (1995)

Interview de l'architecte Jean Englebert.

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Peer Reviewed
See detailOptimistic Planning for Belief-Augmented Markov Decision Processes
Fonteneau, Raphaël ULg; Busoniu, Lucian; Munos, Rémi

in Proceedings 2013 Symposium on Adaptive Dynamic Programming and Reinforcement Learning (ADPRL-13), Singapore, 15–19 April 2013 (2013)

This paper presents the Bayesian Optimistic Planning (BOP) algorithm, a novel model-based Bayesian reinforcement learning approach. BOP extends the planning approach of the Optimistic Planning for Markov ... [more ▼]

This paper presents the Bayesian Optimistic Planning (BOP) algorithm, a novel model-based Bayesian reinforcement learning approach. BOP extends the planning approach of the Optimistic Planning for Markov Decision Processes (OP-MDP) algorithm [Busoniu2011,Busoniu2012] to contexts where the transition model of the MDP is initially unknown and progressively learned through interactions within the environment. The knowledge about the unknown MDP is represented with a probability distribution over all possible transition models using Dirichlet distributions, and the BOP algorithm plans in the belief-augmented state space constructed by concatenating the original state vector with the current posterior distribution over transition models. We show that BOP becomes Bayesian optimal when the budget parameter increases to infinity. Preliminary empirical validations show promising performance. [less ▲]

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Peer Reviewed
See detailAn Optimistic Posterior Sampling Strategy for Bayesian Reinforcement Learning
Fonteneau, Raphaël ULg; Korda, Nathan; Munos, Rémi

in NIPS 2013 Workshop on Bayesian Optimization (BayesOpt2013) (2013)

We consider the problem of decision making in the context of unknown Markov decision processes with finite state and action spaces. In a Bayesian reinforcement learning framework, we propose an optimistic ... [more ▼]

We consider the problem of decision making in the context of unknown Markov decision processes with finite state and action spaces. In a Bayesian reinforcement learning framework, we propose an optimistic posterior sampling strategy based on the maximization of state-action value functions of MDPs sampled from the posterior. First experiments are promising. [less ▲]

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See detailOPTIMIZACIÓN DE BIOMATERIALES PARA MODIFICACIÓN DE LA SUPERFICIE CELULAR
Cerda-Cristerna, B.I.; Flores, H; Pozos, A et al

Poster (2010, December)

Detailed reference viewed: 14 (0 ULg)
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Peer Reviewed
See detailOptimization and analysis of lock gates in the framework of the "Seine-Escaut Est" waterway upgrading
Gernay, Thomas ULg

in Bulletin of the Permanent International Association of Navigation Congresses (2010), (141), 11-26

This paper presents a research study performed on lock gates. It concerns the downstream lock gate of the one of the four new locks planned within the framework of the “Seine-Escaut Est (SEE)” project in ... [more ▼]

This paper presents a research study performed on lock gates. It concerns the downstream lock gate of the one of the four new locks planned within the framework of the “Seine-Escaut Est (SEE)” project in the Walloon Region of Belgium. At the stage of the basic preliminary design, it was decided to use four identical gates, all suspended and moved transversally to the lock. On this basis, the present work tackles different aspects of the lock gate study. The aim is double: on the one hand, to advance in the study of the four SEE project downstream lock gates, and on the other hand, to focus more particularly on lock gate structural analysis, notably the design, optimization and structural behavior in the case of ship impact. First, the design and optimization of the gate are performed, using the LBR5 lock gate optimization software and a linear elastic analysis. An optimized solution is obtained considering the best compromise between the cost and weight aspects of the structure. Then, this optimized gate is modeled with the nonlinear finite elements software FINELG. This program is used to conduct non linear numerical analysis of the effect of boat impact on the previously optimized downstream gate. Several analyses are performed, which allow for a discussion on the influence of the stiffener dimensions and the impact zone on the structural behavior of the gate submitted to the impact. Two different behaviors are brought to light, a ductile one and a fragile one. The results of the numerical analysis underline the importance of the development of a global plastic mechanism with the purpose of dissipating a large amount of energy. Finally, an analytical model presented in literature allows for the simplified calculation of the gate theoretical strength in case of ship impact, and the calculated value is compared with the computed results. [less ▲]

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Peer Reviewed
See detailOptimization and Application of Electrophoretic Mobility Analysis of Human Red Blood Cells to Study Their in Vitro Stability, Interaction with Polycations and Proteolytic Enzymes
Grandfils, Christian ULg; Foresto, P.; Riquelme, B. et al

in Journal of Biomedical Materials Research, Part A (2008), 84(2), 535-44

Electrophoretic light scattering method has been considered to determine both the mean and polydispersity of electrophoretic mobility of normal human red blood cells. The final goal of our study was to ... [more ▼]

Electrophoretic light scattering method has been considered to determine both the mean and polydispersity of electrophoretic mobility of normal human red blood cells. The final goal of our study was to optimize an in vitro test allowing us to investigate the interaction of xenobiotics, in particular polyelectrolytes, with blood cells. The feasibility of our method has been evaluated based on the reproducibility of our technique to analyze the native electrophoretic mobility of human RBCs, as well as their evolution in the presence of polycationic compounds, i.e. a natural polyamine, spermine, and a synthetic polycation, a polyethylenimine (PEI). Additionally, the follow-up of the human RBCs electrophoretic mobility has been controlled after their incubation with neuraminidase. [less ▲]

Detailed reference viewed: 4 (0 ULg)