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Peer Reviewed
See detailONELAB: Open Numerical Engineering LABoratory
Geuzaine, Christophe ULg; Henrotte, F.; Marchandise, E. et al

in Proceedings of the 7th European Conference on Numerical Methods in Electromagnetism (NUMELEC2012) (2012, July)

Detailed reference viewed: 106 (14 ULg)
See detailLes ONG en villes africaines : Etudes de cas à Cotonou (Bénin) et à Lubumbashi (RDC)
Poncelet, Marc ULg; Pirotte, Gautier ULg; Stangherlin, Gregor et al

Book published by Academia Bruylant (2006)

A la fin du XXe siècle, de multiples changements se sont produits dans les villes africaines terrains particulièrement propices au développement de nouvelles ONG : la libéralisation politique et ... [more ▼]

A la fin du XXe siècle, de multiples changements se sont produits dans les villes africaines terrains particulièrement propices au développement de nouvelles ONG : la libéralisation politique et économique, la stratégie de décentralisation ainsi que, globalement, les nouvelles orientations des politiques de coopération visant le soutien aux organisations de la société civile. Ces ONG ont connu des trajectoires variées mais les plus robustes d'entre elles constituent encore aujourd'hui la fraction la plus active de ce que l'on pourrait appeler société civile. Celle-ci occupe une part non négligeable des classes moyennes urbaines, intervient sous diverses formes et est encouragée voire formatée par les grands partenaires du développement au Nord. Cet ouvrage a pour but d'établir une photographie des secteurs ONG de Lubumbashi et de Cotonou, comprendre leur genèse et leur mode de fonctionnement et, enfin, d'en dresser une typologie complète. [less ▲]

Detailed reference viewed: 155 (19 ULg)
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See detailEen ongenode gast. Sartre en het Belgisch cordon sanitaire tegen “existentialistische besmetting”, 1945-1955
Lanneau, Catherine ULg

in De Bont, Raf; Verschaffel, Tom (Eds.) Het verderf van Parijs (2004)

Detailed reference viewed: 45 (4 ULg)
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See detailUn ongle d'inclusion: une complication de la cure chirurgicale d'ongle incarne selon la technique de Zadik
Vanhooteghem, Olivier ULg; Henrijean, A.; André, Jean-François ULg et al

in Annales de Dermatologie et de Vénéréologie (2006), 133(12), 1009-10

Detailed reference viewed: 41 (1 ULg)
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See detailOngles sales et mycotoxines
Arrese, J. E.; Goffin, Véronique ULg; Pierard-Franchimont, Claudine ULg et al

in Revue Médicale de Liège (2001), 56(1), 38-40

Some mycotoxins are among the most toxic natural products. They are metabolites produced by food-borne and feed-borne moulds. Dirty and soiled nails, and contaminated or infected onyxis by these specific ... [more ▼]

Some mycotoxins are among the most toxic natural products. They are metabolites produced by food-borne and feed-borne moulds. Dirty and soiled nails, and contaminated or infected onyxis by these specific moulds can be the origin of oral contamination and mycotoxicosis. Hence, nail cleaning, correct hygiene and treatment of mould onychomycosis have a potentially great impact on health. [less ▲]

Detailed reference viewed: 1 (0 ULg)
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See detailOngoing desertification processes in the sahelian belt of West Africa: An evidence from the rain-use efficiency.
Hountondji, Yvon ULg; Sokpon, Nestor; Nicolas, Jacques ULg et al

in Röder, Achim; Hill, Joachim (Eds.) Recent Advances in Remote Sensing and Geoinformation Processing for Land Degradation Assessment (2009)

The implementation of the UNCCD needs the identification of areas that record declining productivity of the vegetation over long-time periods. In this scope, we analyze the state of the vegetation ... [more ▼]

The implementation of the UNCCD needs the identification of areas that record declining productivity of the vegetation over long-time periods. In this scope, we analyze the state of the vegetation productivity using 1982–1999 time series of NOAA-AVHRR NDVI data and compare it to rainfall data. For this, 354 rain gauges data distributed from yearly average isohyets 100 to 900 mm in five countries of West Africa are analyzed. We use for trends analysis, the ratio between integrated vegetation index (iNDVI) during the growing period (June to October) and the May to October sum of rainfall (RR). This ratio is a proxy of the Rain Use Efficiency is the widely accepted. Overall, 91% and 94% of RR and iNDVI data recorded positive trends over the 1982–1999 periods. Most stations in the Sahel were stable for the iNDVI/RR (49.5%). However, 37.8% showed strong to very strong negative change in the iNDVI/RR ratio, while only 1.3% showed positive trend. These strong negative trends recorded in more than 1/3 of the analyzed stations may reflect ongoing desertification processes in the Sahel and could be a starting point for the identification of hot-spots areas to determine where to take action within the National Action Programs (NAP) or Sub-Regional Action Programs (SRAP) to combat desertification. [less ▲]

Detailed reference viewed: 66 (6 ULg)
See detailOnline assessment of the quality of care in elderly (Belgium)
Tancredi, A; Renard, Florence ULg; Degey, S et al

Conference (2009)

Detailed reference viewed: 14 (0 ULg)
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Peer Reviewed
See detailAn online database for plant image analysis software tools
Lobet, Guillaume ULg; Draye, Xavier; Périlleux, Claire ULg

in Plant Methods (2013), 9(98),

Detailed reference viewed: 29 (6 ULg)
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See detailOnline Flight Flutter Testing
Dimitriadis, Grigorios ULg; Cooper, Jonathan E

in Link, M. (Ed.) Proceedings of the International Conference on Structural System Identification (2001, September)

A number of different identification methods are considered as candidate approaches to undertake online flight flutter testing. Rather than flying the test aircraft to a new flight condition and then ... [more ▼]

A number of different identification methods are considered as candidate approaches to undertake online flight flutter testing. Rather than flying the test aircraft to a new flight condition and then performing a data analysis at a constant flight condition, it is shown how it is feasible to track changes in frequencies and damping ratios as the flight speed is increased. It is also possible to provide an updated estimate of the predicted flutter speed, giving the flight engineers added confidence in the margin of safety. Both frequency and time domain methods are evaluated on a simulated 3 DOF aeroelastic system. These preliminary results show that such an approach is feasible although further work is required to determine the best testing and analysis approach. [less ▲]

Detailed reference viewed: 33 (2 ULg)
Peer Reviewed
See detailOnline Grocery Shopping: The Challenge of Home Delivery Service
Hammedi, Wafa ULg; Van Riel, Allard ULg

Poster (2008, July 14)

Detailed reference viewed: 99 (5 ULg)
Peer Reviewed
See detailAn online interactive tool for the energy assessment of residential buildings and transportation
Marique, Anne-Françoise ULg; de Meester, Tatiana; Reiter, Sigrid ULg

in Proceedings of PLEA 2012 (2012, November)

In the current context of increasing environmental awareness, energy efficiency is presented as a viable approach to the mitigation of climate change. In addition to public policies dealing with energy ... [more ▼]

In the current context of increasing environmental awareness, energy efficiency is presented as a viable approach to the mitigation of climate change. In addition to public policies dealing with energy efficiency, heightening public awareness on the impact of citizens’ lifestyles and behaviours is crucial and could quickly lead to significant reductions in the total energy consumption of a territory. This paper presents a new online interactive tool which enables citizens, local authorities and private developers (1) to assess energy consumption in the building and transportation sectors, at the individual and at the neighbourhood scales; (2) to compare them and (3) to find relevant and personalized hints to reduce their energy consumptions. Numerous methods and tools including a typological classification of buildings, thermal dynamic simulations, life-cycle assessments, statistical treatments of national censuses, etc. were used and combined to build the database used in the online interactive tool. This tool makes the main results of a scientific research accessible to a large non-specialized audience which is crucial in the scope of the sustainable development. Keywords: interactive tool, assessment methods, buildings, transportation, households, scientific popularization [less ▲]

Detailed reference viewed: 46 (11 ULg)
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Peer Reviewed
See detailAn online interactive tool to assess energy consumption in residential buildings and for daily mobility
Marique, Anne-Françoise ULg; de Meester, Tatiana; De Herde, André et al

in Energy and Buildings (2014), 78C

Improving energy efficiency in the building and transportation sectors is a viable approach to mitigate the effects of climate change and has become an important policy target. As a result, in addition to ... [more ▼]

Improving energy efficiency in the building and transportation sectors is a viable approach to mitigate the effects of climate change and has become an important policy target. As a result, in addition to scientific research and public policies addressing energy efficiency, raising public awareness of the impact of the behaviour of citizens to energy efficiency is crucial and could quickly lead to significant reductions in the total energy consumption of a territory. In this context, this paper presents a new online interactive tool that enables not only citizens but also local authorities and private developers to (1) assess the sources of energy consumption related to housing and to daily mobility at both the individual and neighbourhood scales, (2) compare these sources and (3) determine relevant and personalised suggestions to reduce energy consumption. Numerous methods and tools, including a typological classification of buildings, thermal dynamic simulations, life-cycle assessments and statistical treatments of national censuses, were used to produce the two large databases used in this interactive tool. This report represents the primary results of a three-year long scientific research project dedicated to the study of energy efficiency in buildings and for daily mobility that is accessible to a large non-specialised audience. [less ▲]

Detailed reference viewed: 66 (14 ULg)
Peer Reviewed
See detailOnline Learning of Gaussian Mixture Models - a Two-Level Approach
Declercq, Arnaud ULg; Piater, Justus ULg

in VISAPP 2008: Proceedings of the Third International Conference on Computer Vision Theory and Applications - Volume 1 (2008)

Online learning, Gaussian mixture model, Uncertain model. We present a method for incrementally learning mixture models that avoids the necessity to keep all data points around. It contains a single user ... [more ▼]

Online learning, Gaussian mixture model, Uncertain model. We present a method for incrementally learning mixture models that avoids the necessity to keep all data points around. It contains a single user-settable parameter that controls via a novel statistical criterion the trade-off between the number of mixture components and the accuracy of representing the data. A key idea is that each component of the (non-overfitting) mixture is in turn represented by an underlying mixture that represents the data very precisely (without regards to overfitting); this allows the model to be refined without sacrificing accuracy. [less ▲]

Detailed reference viewed: 77 (0 ULg)
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Peer Reviewed
See detailOnline least-squares policy iteration for reinforcement learning control
Busoniu, Lucian; Ernst, Damien ULg; De Schutter, Bart et al

in Proceedings of the 2010 American Control Conference (2010)

Reinforcement learning is a promising paradigm for learning optimal control. We consider policy iteration (PI) algorithms for reinforcement learning, which iteratively evaluate and improve control ... [more ▼]

Reinforcement learning is a promising paradigm for learning optimal control. We consider policy iteration (PI) algorithms for reinforcement learning, which iteratively evaluate and improve control policies. State-of-the-art, least-squares techniques for policy evaluation are sample-efficient and have relaxed convergence requirements. However, they are typically used in offline PI, whereas a central goal of reinforcement learning is to develop online algorithms. Therefore, we propose an online PI algorithm that evaluates policies with the so-called least-squares temporal difference for Q-functions (LSTD-Q). The crucial difference between this online least-squares policy iteration (LSPI) algorithm and its offline counterpart is that, in the online case, policy improvements must be performed once every few state transitions, using only an incomplete evaluation of the current policy. In an extensive experimental evaluation, online LSPI is found to work well for a wide range of its parameters, and to learn successfully in a real-time example. Online LSPI also compares favorably with offline LSPI and with a different flavor of online PI, which instead of LSTD-Q employs another least-squares method for policy evaluation. [less ▲]

Detailed reference viewed: 25 (2 ULg)
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Peer Reviewed
See detailOnline monitoring of heterogeneous polymerizations in supercritical carbon dioxide by Raman spectroscopy
Grignard, Bruno ULg; Gilbert, Bernard ULg; Malherbe, Cédric ULg et al

in Chemphyschem : A European Journal of Chemical Physics and Physical Chemistry (2012), 13(11), 2666-2670

A novel setup is described to monitor the kinetics of homogeneous and heterogeneous reactions online using Raman spectroscopy under high pressure. The arrangement is based on a high-pressure reactor ... [more ▼]

A novel setup is described to monitor the kinetics of homogeneous and heterogeneous reactions online using Raman spectroscopy under high pressure. The arrangement is based on a high-pressure reactor equipped with a sapphire window in combination with a mobile probe that allows the collection of the back-scattered Raman signal at 360°. [less ▲]

Detailed reference viewed: 44 (19 ULg)
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See detailOnline monitoring of the interaction of balls and slurry with the Sensomag ®
Köttgen, Axel; Leroy, Sophie ULg; Bastin, David ULg et al

Poster (2012, December 10)

Presentation of Optimag Project results. Optimag aims to optimize the ball milling operations through the use of an embarked sensor, called the Sensomag, and developed by Magotteaux to monitor in real ... [more ▼]

Presentation of Optimag Project results. Optimag aims to optimize the ball milling operations through the use of an embarked sensor, called the Sensomag, and developed by Magotteaux to monitor in real time the position of the slurry and the grinding balls. [less ▲]

Detailed reference viewed: 37 (6 ULg)
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Peer Reviewed
See detailOnline Sparse Bandit for Card Games
Lupien St-Pierre, David ULg; Louveaux, Quentin ULg; Teytaud, Olivier

in Advance in Computer Games (2011)

Finding an approximation of a Nash equilibria in matrix games is an important topic that reaches beyond the strict application to matrix games. A bandit algorithm commonly used to approximate a Nash ... [more ▼]

Finding an approximation of a Nash equilibria in matrix games is an important topic that reaches beyond the strict application to matrix games. A bandit algorithm commonly used to approximate a Nash equilibrium is EXP3. However, the solution to many problems is often sparse, yet EXP3 inherently fails to exploit this property. To the knowledge of the authors, there exist only an offline truncation to tackle such issue. In this paper, we propose a variation of EXP3 to exploit the fact that solution is sparse by dynamically removing arms; the resulting algorithm empirically performs better than previous versions. We apply the resulting algorithm to a MCTS program for the Urban Rivals card game. [less ▲]

Detailed reference viewed: 35 (12 ULg)
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Peer Reviewed
See detailOnline travel service quality: The role of pre-transaction services
Van Riel, Allard ULg; Semeijn, Janjaap; Pauwels, Pieter

in Total Quality Management & Business Excellence (2004), 15(4), 475-493

Detailed reference viewed: 38 (0 ULg)
See detailOnline Voltage Security Assessment in the Hellenic Interconnected System
Vournas, Costas; Christoforidis, George; Van Cutsem, Thierry ULg

in Savulescu, Savu (Ed.) Real-Time Stability Assessment in Modern Power System Control Centers (2009)

Detailed reference viewed: 64 (1 ULg)