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Peer Reviewed
See detailModel-based, Automatic Recognition of Tactical Vehicles in Laser-Radar Imagery: Principles and Evaluation
Verly, Jacques ULg; Delanoy, Richard L.; Dudgeon, Dan E.

Conference (1989, November 02)

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See detailModel-free Monte Carlo-like policy evaluation
Fonteneau, Raphaël ULg; Murphy, Susan A.; Wehenkel, Louis ULg et al

in 29th Benelux Meeting on Systems and Control (2010)

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See detailModel-free Monte Carlo-like policy evaluation
Ernst, Damien ULg

Speech/Talk (2010)

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See detailModel-free Monte Carlo-like policy evaluation
Fonteneau, Raphaël ULg; Murphy, Susan; Wehenkel, Louis ULg et al

in Proceedings of the Thirteenth International Conference on Artificial Intelligence and Statistics (AISTATS 2010) (2010, May)

We propose an algorithm for estimating the finite-horizon expected return of a closed loop control policy from an a priori given (off-policy) sample of one-step transitions. It averages cumulated rewards ... [more ▼]

We propose an algorithm for estimating the finite-horizon expected return of a closed loop control policy from an a priori given (off-policy) sample of one-step transitions. It averages cumulated rewards along a set of “broken trajectories” made of one-step transitions selected from the sample on the basis of the control policy. Under some Lipschitz continuity assumptions on the system dynamics, reward function and control policy, we provide bounds on the bias and variance of the estimator that depend only on the Lipschitz constants, on the number of broken trajectories used in the estimator, and on the sparsity of the sample of one-step transitions. [less ▲]

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See detailModel-free Monte Carlo–like policy evaluation
Fonteneau, Raphaël ULg; Murphy, Susan; Wehenkel, Louis ULg et al

in Proceedings of Conférence Francophone sur l'Apprentissage Automatique (CAp) 2010 (2010, May)

We propose an algorithm for estimating the finite-horizon expected return of a closed loop control policy from an a priori given (off-policy) sample of one-step transitions. It averages cumulated rewards ... [more ▼]

We propose an algorithm for estimating the finite-horizon expected return of a closed loop control policy from an a priori given (off-policy) sample of one-step transitions. It averages cumulated rewards along a set of “broken trajectories” made of one-step transitions selected from the sample on the basis of the control policy. Under some Lipschitz continuity assumptions on the system dynamics, reward function and control policy, we provide bounds on the bias and variance of the estimator that depend only on the Lipschitz constants, on the number of broken trajectories used in the estimator, and on the sparsity of the sample of one-step transitions. [less ▲]

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See detailModel-free probability distance clustering of time series
Frasso, Gianluca ULg; D'Ambrosio, Antonio; Siciliano, Roberta

Conference (2013, December)

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See detailModel-guided bone tissue engineering: from bench to bedside via in silico modeling
Geris, Liesbet ULg

Conference (2014, September)

The creation of man-made living implants is the holy grail of tissue engineering (TE). As basic science advances, one of the major challenges in TE is the translation of the increasing biological ... [more ▼]

The creation of man-made living implants is the holy grail of tissue engineering (TE). As basic science advances, one of the major challenges in TE is the translation of the increasing biological knowledge on complex cell and tissue behavior into a predictive and robust engineering process. Mastering this complexity is an essential step towards clinical applications of TE. Computational modeling allows to study the biological complexity in a more integrative and quantitative way. Specifically, computational tools can help in quantifying and optimizing the TE product and process but also in assessing the influence of the in vivo environment on the behavior of the TE product after implantation. In this talk, I will use the example of bone tissue engineering to demonstrate how computational modeling can contribute in all aspects of the TE product development cycle: cells, carriers, culture conditions and clinics (figure 1 and 2). Depending on the specific question that needs to be answered the optimal model systems can vary from single scale to multiscale. Furthermore, depending on the available information, model systems can be purely data-driven or more hypothesis-driven in nature. The talk makes the case for in silico models receiving proper recognition, besides the in vitro and in vivo work in the TE field. Figure 1: overview of the 4 important components in bone tissue engineering: cells, carriers, culture and clinics. Figure 2: overview of in silico contributions to the 4 important components in bone tissue engineering: cells [1], carriers, culture [3] and clinics [4]. Acknowledgements This work presented in this talk is part of Prometheus, the KU Leuven R&D division for skeletal tissue engineering. http://www.kuleuven.be/prometheus. The research leading to these results has received funding from the European Research Council under the European Union's Seventh Framework Programme (FP/2007-2013) / ERC Grant Agreements 279100; from the Research Programme of the Research Foundation - Flanders (FWO, grant n. G.0982.11), from the Belgian National Fund for Scientific Research (FNRS) and from the special research fund of the KU Leuven (GOA/13/016) References 1. Kerkhofs J, Roberts SJ, Luyten FP, Van Oosterwyck H, Geris L. Relating the chondrocyte gene network to growth plate morphology: from genes to phenotype. PLoS One. 2012;7(4):e34729. doi: 10.1371/journal.pone.0034729 2. Guyot Y, Papantoniou I, Chai YC, Van Bael S, Schrooten J, Geris L. A computational model for cell/ECM growth on 3D surfaces using the level set method: a bone tissue engineering case study.Biomech Model Mechanobiol. 2014 3. Carlier A, Geris L, Bentley K, Carmeliet G, Carmeliet P, Van Oosterwyck H. MOSAIC: a multiscale model of osteogenesis and sprouting angiogenesis with lateral inhibition of endothelial cells. PLoS Comput Biol. 2012;8(10):e1002724. [less ▲]

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See detailModelaçao numérica da encurvadura lateral de vigas I em aço inoxidável à temperature ambiente e em situaçao de incêndio - comparaçao com o Eurocòdigo
Lopes, N.; Vila Real, P.; Silva, L. et al

in Proceedings of the V Congresso de Construçao Metálica e Mista (2005)

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See detailModelaçao Numérica da Encurvadura Lateral de Vigas I Metalica Sujeitas à Acçao do Fogo
Vila Real, Paulo; Piloto, Paulo; Franssen, Jean-Marc ULg

in Proc. II National Conference on Steel and Composite Construction (1999)

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See detailModelaçao numérica do comportamento de uma estrutura metalica sujeita à acçao do fogo - Analise de varios cenarios de incëndio
Vila Real, P. M. M.; Piloto, P. A. G.; Franssen, Jean-Marc ULg

in Revista Portuguesa de Engenharia de Estruturas (RPEE) (2000), 47

In this work it has been analysed several possible fire scenarios in a steel structure of a commercial building, in order to find which one corresponds to the lowest fire resistance of the structure. It ... [more ▼]

In this work it has been analysed several possible fire scenarios in a steel structure of a commercial building, in order to find which one corresponds to the lowest fire resistance of the structure. It has been used a geometrically and materially non-linear finite element program specially established for the analysis of structures submitted to the fire. As the analysed structure doesn't reach the fire resistance suggested by the Portuguese standards, some solutions are proposed to increase its fire resistance. [less ▲]

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See detailLe modèle "Barbus" (poisson cyprinidé). Un maillon indispensable dans la recherche sur les poissons d'eau douce.
Poncin, Pascal ULg; Berrebi, Patrick; Philippart, Jean_Claude et al

in Cahiers d'Ethologie Appliquée (1993), 13(2), 129-130

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See detailModèle 3-D de dispersion atmosphérique de radioéléments autour du site de Tihange
Bourouag, Mohamed ULg; Dzisiak, J. P.; Everbecq, Etienne ULg

Report (1993)

L'A.R. Plan National d'Urgence pour les risques nucléaires impose à l'exploitant de disposer de moyens d'évaluation des conséquences théoriques de rejets atmosphériques. Les modèles visent à permettre une ... [more ▼]

L'A.R. Plan National d'Urgence pour les risques nucléaires impose à l'exploitant de disposer de moyens d'évaluation des conséquences théoriques de rejets atmosphériques. Les modèles visent à permettre une évaluation rapide de la situation radiologique à proximité du site d'exploitation et la préparation d'un rapport communiqué aux autorités, concernant les conséquences potentielles. Le modèle MISTRAL (Modèle Intégré pour la Surveillance du Transport des Radioéléments dans l’Air par un modèle Lagrangien) a été construit début des années 1990 pour voir la possibilité d’utiliser des modèles de dispersion tri-dimensionnels pour calculer les conséquences radiologiques des rejets de radio-éléments dans l’atmosphère par les centrales électriques nucléaires. En effet, les modèles généralement utilisés pour ce calculs étaient de manière générale des modèles gaussiens supposant un sol plat, ce qui augmente fortement l’incertitude dans les zones avec relief (Tihange, Chooz par exemple). Le principe du modèle était le suivant : • Calcul du terme source sur base des mesures en continu réalisées aux centrales • Modèle de champ de vent tridimensionnel (UCL) ; 170 x 170 km • Modèle de dispersion lagrangienne ; 140 x 140 km, mailles « résultats » variables (100, 300, 1000m) o 3 groupes de radioéléments (gaz nobles, iodes, aérosols) o Déposition sèche et humide o Calcul de dose • Architecture informatique o Station de travail UNIX (DECStation 500/133) o Architecture Client/Serveur o DECServeur (collecte données senseurs) o Serveur environnement (Interrogation senseurs cheminées, distribution des données aux différents « clients ») o Serveur champ de vent (création champ de vent) • Interface utilisateurs o Interface semi-graphique o Développé à partir de librairies publiques • Modes de fonctionnement o Mode interactif : calculs « à froid », simulation de scénario prédéfinis o Mode automatique : tourne en permanence (temps réel) ; données d’entrée (vents, rejets) par capteurs o Mode prédictif : fait des prédictions à plusieurs heures en cas d’accident ; condition initiale = résultats mode automatique Le rapport reprend la description du modèle de dispersion et de déposition des radioéléments rejetés aux cheminées de Tihange [less ▲]

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See detailLe modèle belge de concertation budgétaire et les pouvoirs locaux
Husson, Jean-François ULg

in Reflets et Perspectives de la Vie Economique (2008), XLVII(4), 33-48

The Belgian model of budget cooperation has been originally devised to maintain Belgian economic and monetary union through a close follow-up of Regions and Communities deficits and debts. Enlarged to ... [more ▼]

The Belgian model of budget cooperation has been originally devised to maintain Belgian economic and monetary union through a close follow-up of Regions and Communities deficits and debts. Enlarged to take into account European budgetary constraints, this model has devoted a growing attention to the local sector, as detailed in this paper. Up to now, budget and debt assignments for local authorities have been agreed by the supervisory authorities – the Regions – despite the lack of available data on a regional basis. Developments could come from greater involvement and responsibility from local authorities themselves. [less ▲]

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See detailLe modèle belge de concertation budgétaire
Husson, Jean-François ULg

Conference (2008, June 25)

Cette présentation aborde l'historique de la coordination budgétaire en Belgique depuis le début des années 1990. Elle s'attarde plus particulièrement sur les institutions de coordination (Comité de ... [more ▼]

Cette présentation aborde l'historique de la coordination budgétaire en Belgique depuis le début des années 1990. Elle s'attarde plus particulièrement sur les institutions de coordination (Comité de consertation, Conseil supérieur des Finances,...) et les divers instruments de régulation utilisés. [less ▲]

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See detailLe modèle belge des Services d'intérêt économique général
Durviaux, Ann-Lawrence ULg

in Les services d'intérêt économique général et le marché intérieur : modèles nationaux et cadre juridique européen (2011, October 14)

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See detailModèle coût de Production - Report R&D1
Rigo, Philippe ULg

Report (2002)

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See detailModèle coût de Production - Report R&D2
Rigo, Philippe ULg

Report (2002)

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See detailModèle coût de Production - Report R&D3
Rigo, Philippe ULg

Report (2003)

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See detailModèle coût de Production - Report R&D4
Rigo, Philippe ULg

Report (2003)

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