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See detailApprentissages élémentaires
Ferrara, André ULg

in Rondal, Jacques (Ed.) Introduction à la psychologie scientifique (1999)

Detailed reference viewed: 35 (5 ULg)
See detailApprentissages et multimédia
Leclercq, Dieudonné ULg; Denis, Brigitte ULg

Scientific conference (1994, April)

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See detailApprentissages et multimédia
Denis, Brigitte ULg; Leclercq, Dieudonné ULg

in Noirhomme, Monique (Ed.) Actes de la journée d'information sur le Multimédia (1995)

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See detailApprentissages et multimédias
Leclercq, Dieudonné ULg; Denis, Brigitte ULg

in Les centres de ressources en langues : méthodologies, mise en valeur, optimisation de leur utilisation (1994, April)

Detailed reference viewed: 28 (4 ULg)
See detailApprentissages et multimédias
Leclercq, Dieudonné ULg; Denis, Brigitte ULg

in Slangen, L. (Ed.) Actes du colloque 'Les centres de ressources en langues. Méthodologies, Mises en valeur, optimisation de leur utilisation' (1995)

Detailed reference viewed: 14 (4 ULg)
See detailApprentissages et scolarité des primo-arrivants
Defays, Jean-Marc ULg

Conference given outside the academic context (2014)

Detailed reference viewed: 14 (1 ULg)
See detailL'apprivoisement de la méthode en Belgique, exploration par une équipe Sos-enfants.
Bullens, Quentin ULg

in Alföldi, Françis (Ed.) 18 cas pratiques d'évaluation en action sociale et médico-sociale. (2008)

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See detailApprivoiser les génies littéraires
Saint-Amand, Denis ULg

Article for general public (2014)

Compte rendu de Vincent Laisney, Sept génies. Voyage au centre de la littérature, Bruxelles, Les Impressions Nouvelles, 2014

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See detailAn approach for dividing models of biological reaction networks into functional units
Ederer, Michael; Sauter, Thomas; Bullinger, Eric ULg et al

in Simulation: Trans. Society for Modeling and Simulation International (2003), 79(12), 703-716

Biological reaction networks consist of many substances and reactions between them. Like many other biological systems, they have a modular structure. Therefore, a division of a biological reaction ... [more ▼]

Biological reaction networks consist of many substances and reactions between them. Like many other biological systems, they have a modular structure. Therefore, a division of a biological reaction network into smaller units highly facilitates its investigation. The authors propose an algorithm to divide an ordinary differential equation (ODE) model of a biological reaction network hierarchically into functional units. For every compound, an activity function dependent on concentration or concentration change rate is defined. After performing suitable simulations, distances between the compounds are computed by comparing the activities along the trajectories of the simulation. The distance information is used to generate a dendrogram revealing the internal structure of the reaction network. The algorithm identifies functional units in two models of different networks: catabolite repression in Escherichia coli and epidermal growth factor (EGF) signal transduction in mammalian cells. [less ▲]

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See detailApproach of patients with lower tract disease
Clercx, Cécile ULg

in Proceedings of the 24thProgram - Topical Symposium on diseases of small animals - Portoroz - Slovenia (2011, April)

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See detailApproach of regionalization of low flow of the Walloon Region
Gailliez, Sébastien; Degre, Aurore ULg

Poster (2010, April)

The walloon part of the Meuse’s watershed represents 12283 km² and 17694 km of river. The anthropogenic pressure is important (population density is more or less 200 inhabitants/km²). In low flow period ... [more ▼]

The walloon part of the Meuse’s watershed represents 12283 km² and 17694 km of river. The anthropogenic pressure is important (population density is more or less 200 inhabitants/km²). In low flow period, water scarcity can touch both the water users (producer of drinking water and hydropower, tourism and pleasure activities and kayaking) and the river itself affecting the ‘good environmental state’ (context of Water Framework Directive 2000/60/CE). The operational management of rivers during low flow periods needs a deep knowledge of this drought phenomenon including an analysis of low flow severity and its occurrence probability. It also needs the computation of low flow discharge at any point of a river based on available hydrologic variables. The aim of this study is the low flows’ regionalization in the Walloon Region. First of all, the time series of flow data are filled in and validated. The quality is then controlled. The different tests are the determination of the minimum year requirement for a monitoring site, homogeneity tests, verification of presence or absence of summer alga and the proportion of extrapolation of the discharge rating curve Secondly, homogeneous regions will be defined and regression equations will be build. These equations will establish the relation between low flow and physical parameters (watershed area, pedology, slope), climate ones and/or ground water ones. The regression model will permit the computation of low flow discharge at any point of an ungauged river. [less ▲]

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See detailAn approach to assess the quality of collaboration in technology-mediated design situations.
Burkhardt, Jean-Marie; Détienne, Françoise; Hebert, Anne-Marie et al

in Proceedings of ECCE 2009 : European Conference on Cognitive Ergonomics (2009, September)

ur objective is to measure and compare the quality of collaboration in technology-mediated design activities. Our position is to consider collaboration as multidimensional. We present a method to assess ... [more ▼]

ur objective is to measure and compare the quality of collaboration in technology-mediated design activities. Our position is to consider collaboration as multidimensional. We present a method to assess quality of collaboration which is composed of seven dimensions concerning communication processes such as grounding, coordination processes, task-related processes, symmetry of individual contributions as well as motivational processes. This method is used in a study aiming to compare the quality of collaboration in architectural design. In this experimental study, design situations vary according to technology-mediation - co-presence with an augmented reality (AR) environment versus distance with AR and visio-conferencing -, and according to number of participants - pairs versus groups of four architects -. Our results show that distinctive dimensions of collaboration are affected by the technology mediation and/or the number of co-designers. We discuss these results with respect to technology affordances such as visibility and group factors. [less ▲]

Detailed reference viewed: 71 (14 ULg)
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See detailAn approach to corrective control of voltage instability using simulation and sensitivity
Van Cutsem, Thierry ULg

in IEEE Transactions on Power Systems (1995), 10

Detailed reference viewed: 23 (1 ULg)
See detailAn approach to corrective control of voltage stability using simulation and sensitivity
Van Cutsem, Thierry ULg

in Proc. IEEE NTUA Athens Power Tech conference (1993, September)

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See detailAn approach to desication-tolerant bacteria in starter culture production
Weekers, F.; Jacques, Ph.; Mergeay, M. et al

in Engineering and manufacturing for biotechnology (2001)

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See detailAn approach to modal analysis of power system angle stability
Roth, Anna; Ruiz-Vega, Daniel; Ernst, Damien ULg et al

in Proceedings of IEEE Powertech 2001 (2001)

An approach to modal analysis and modal identification is proposed, capable of complementing the panoply of existing methods. It is based on a hybrid time-domain – direct transient stability method called ... [more ▼]

An approach to modal analysis and modal identification is proposed, capable of complementing the panoply of existing methods. It is based on a hybrid time-domain – direct transient stability method called SIME (for SIngle Machine Equivalent). In short, SIME uses a conventional transient stability program to transform the time varying parameters of the system into those of a one-machine infinite bus (OMIB) equivalent system. The representations of this OMIB allow substantial reduction of the original problem’s dimensionality. Many important advantages may result. For example, the multimachine system unstable equilibrium point (UEP) can readily be derived from the OMIB UEP, which is calculated analytically and unambiguously in a two-dimensional space. Further, the interplay between multimachine and OMIB characteristics and their complementary properties provides a better understanding and handling of damping, inter-area oscillations and their control. More generally, modal analysis and modal identification tasks get closer to each other and easier to handle. The paper essentially focuses on the approach as such rather than on potential applications. Simulations carried out on a 3-machine system illustrate main features. [less ▲]

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See detailAn approach to optimise the establishment of grassy headlands in the Belgian Walloon region: A tool for agri-environmental schemes
De Longueville, Florence ULg; Tychon, Bernard ULg; Leteinturier, B. et al

in Land Use Policy (2007), 24(2), 443-450

Farming in Europe is constantly changing as environmental concerns have increasingly been taken into account since the mid 1980s and emphasis has been put on agri-environmental matters throughout all ... [more ▼]

Farming in Europe is constantly changing as environmental concerns have increasingly been taken into account since the mid 1980s and emphasis has been put on agri-environmental matters throughout all European countries. For instance, in Wallonia (Belgium), as a result of the provisions of the Government Decree on agri-environmental measures, farmers are increasingly encouraged to adopt environmentally friendly practices such as the creation of grassy headlands in their fields. As European agriculture is changing, tools are needed to monitor the evolution of agricultural practices, to control policy application and to advise farmers. In this framework, we present a new approach to optimise the establishment of grassy headlands in cultivated fields. Using a Geographic Information System (GIS), we identify exact locations where farmers can introduce grassy headlands in accordance with legal specifications and environmental concerns and calculate the total length of grassy headland that farmers can establish considering the features of their farm and parcels and for which they can receive subsidies. It indicates a potential, which could serve as a calculation baseline for an indicator. Wallonia was chosen as study area because a digitised parcel plan has been available from the Integrated Administration and Control System (IACS) since 1997. The methodological approach proposes a new valorisation of this spatial information layer and can be considered as an example of application providing relevant information for several intervention levels: national or regional decisionmakers, advisors and individual farmers. Since all EU Member States had to set up their own GIS-based land parcel system starting in 2005, our approach may be useful as is or in similar applications in other countries. (c) 2006 Elsevier Ltd. All rights reserved. [less ▲]

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See detailAn approach to real-time transient stability assessment and control
Pavella, Mania ULg; Wehenkel, Louis ULg; Bettiol, Arlon et al

in Techniques for stability limit search - Publication IEEE : TP-138-0 (1997)

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See detailAn approach to retrieve information on the carbonyl fluoride (COF2) vertical distributions above Jungfraujoch by FTIR multi-spectrum multi-window fitting
Duchatelet, Pierre ULg; Mahieu, Emmanuel ULg; Ruhnke, Roland et al

in Atmospheric Chemistry and Physics (2009), 9

We present an original multi-spectrum fitting procedure to retrieve volume mixing ratio (VMR) profiles of carbonyl fluoride (COF2) from ground-based high resolution Fourier transform infrared (FTIR) solar ... [more ▼]

We present an original multi-spectrum fitting procedure to retrieve volume mixing ratio (VMR) profiles of carbonyl fluoride (COF2) from ground-based high resolution Fourier transform infrared (FTIR) solar spectra. The multi-spectrum approach consists of simultaneously combining, during the retrievals, all spectra recorded consecutively during the same day and with the same resolution. Solar observations analyzed in this study with the SFIT-2 v3.91 fitting algorithm correspond to more than 2900 spectra recorded between January 2000 and December 2007 at high zenith angles, with a Fourier Transform Spectrometer operated at the high-altitude International Scientific Station of the Jungfraujoch (ISSJ, 46.5° N latitude, 8.0° E longitude, 3580 m altitude), Switzerland. The goal of the retrieval strategy described here is to provide information about the vertical distribution of carbonyl fluoride. The microwindows used are located in the ν4 or in the ν4 COF2 infrared (IR) absorption bands. Averaging kernel and eigenvector analysis indicates that our FTIR retrieval is sensitive to COF2 inversion between 17 and 30 km, with the major contribution to the retrieved information always coming from the measurement. Moreover, there was no significant bias between COF2 partial columns, total columns or VMR profiles retrieved from the two bands. For each wavenumber region, a complete error budget including all identified sources has been carefully established. In addition, comparisons of FTIR COF2 17–30 km partial columns with KASIMA and SLIMCAT 3-D CTMs are also presented. If we do not notice any significant bias between FTIR and SLIMCAT time series, KASIMA COF2 17–30 km partial columns are lower of around 25%, probably due to incorrect lower boundary conditions. For each times series, linear trend estimation for the 2000–2007 time period as well as a seasonal variation study are also performed and critically discussed. For FTIR and KASIMA time series, very low COF2 growth rates (0.4±0.2%/year and 0.3±0.2%/year, respectively) have been derived. However, the SLIMCAT data set gives a slight negative trend (−0.5±0.2%/year), probably ascribable to discontinuities in the meteorological data used by this model. We further demonstrate that all time series are able to reproduce the COF2 seasonal cycle, which main seasonal characteristics deduced from each data set agree quite well. [less ▲]

Detailed reference viewed: 82 (24 ULg)