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See detailFirst steps to model milk urea in a management perspective
Bastin, Catherine ULg; Gillon, Alain ULg; Laloux, Laurent et al

Conference (2007, July)

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See detailCutting planes and infeasibility certificates from lattice-point-free polyhedra
Louveaux, Quentin ULg

Conference (2007, July)

A central result in the theory of integer optimization states that a system of linear diophantine equations Ax = b has no integral solution if and only if there exists a vector in the dual lattice, yT A ... [more ▼]

A central result in the theory of integer optimization states that a system of linear diophantine equations Ax = b has no integral solution if and only if there exists a vector in the dual lattice, yT A integral such that yT b is fractional. We extend this result to systems that both have equations and inequalities {Ax = b, C x ≤ d}. We show that a certificate of integral infeasibility is a linear system with rank(C) variables containing no integral point. The result also extends to the mixed integer setting. [less ▲]

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See detailAssessment of Lake Sediment Sensitivity to Earthquakes and Climate Cycles along the North Anatolian Fault,
Boes, Xavier; Avsar, Ulas; Doner, L. et al

Conference (2007, July)

Detailed reference viewed: 4 (1 ULg)
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See detailPhytoremediation of contaminated sites in urban environment : preliminary results of a study focussed on Lubumbashi.
Colinet, Gilles ULg; Saad, Layla ULg; Cubaka, Alfred et al

Conference (2007, July)

A specific flora has developped in Central Africa on soils which are naturally rich in Cu and Co. Mining and ore treatment activities in the Katanga province (RDC) have generated contaminations which do ... [more ▼]

A specific flora has developped in Central Africa on soils which are naturally rich in Cu and Co. Mining and ore treatment activities in the Katanga province (RDC) have generated contaminations which do endanger ecosystem viability and/or human health. A survey of edaphic conditions prevailing for plant growing in natural metalliferous outcrops, the « copper hills », in mining sites (quarries), and in contaminated areas around metal smelters, is conducted as a first stage of a phytoremediation-based research program. Soluble, available and total content in some metallic trace elements have been measured. The first results show a relatively high heterogeneity inside and between sites. But the main finding is related to the very different nature of contamination between the three types of sites. This point constitutes an additionnal difficulty that should be taken into account for the selection of metallophytic species from the copper hills or the quarries in order to vegetalize a site contaminated by atmospheric fall outs from metal smelters in Lubumbashi. [less ▲]

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See detailCreative Industries, governmentalities and heterotopias: the case of local government in France
Froehlicher, Thomas ULg; Guillemin, Arnaud; Apangu, Patricia

Conference (2007, July)

Creative industries, since 1997, have become assets for economic and cultural development. Nations around the world, at different political levels, are now focusing on the development of a creative ... [more ▼]

Creative industries, since 1997, have become assets for economic and cultural development. Nations around the world, at different political levels, are now focusing on the development of a creative industries policy. The success of this concept can be linked to the fact that this meta-sector has one of the highest levels of economic growth in these last years. Despite the growing number of studies on creative industries, the rationale behind the implementation of this type of policy remains unclear. We seek to further understand how and why local governments are participating in creative industries and how it is spatially acted, by using the concepts of governmentality and heterotopias, as defined by Foucault (1991a, 1997), to explore the rationality and the dynamics behind this policy. Our study focuses on the case of the “Grand Lyon” and its economic development agency. In early 2006, Lyon decided to launch a creative industries policy focused on its two existing creative clusters linked to fashion and video games, Lyon Vision Mode and Lyon Game respectively. A transversal approach was taken to include various and often unconnected sectors. Lyon is the third largest French city with a strong industrial economy. The city has the ambition to be in the top fifteen of the creative regions in Europe. Our results demonstrate that, first of all, the practices of creative industries highlight the different types of technologies that were expressing the rationality and mentality of the ‘governors’. We also found that the policy deployed by the local government created two types of heterotopias (Foucault, 1997). These separate and different spaces appeared as places for creativity in the development and implementation of the creative industries strategy. These heterotopias help to build a sense of community among the participants, and create a tribe, clan, or as defined by Florida (2002), a class. [less ▲]

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See detailFate of zinc in a sandy Luvisol submitted to 100 years of massive irrigation with raw waste waters: a multi-scale approach
Dere, Christelle ULg; Lamy, Isabelle; Cornu, Sophie

Conference (2007, July)

Detailed reference viewed: 13 (1 ULg)
See detailCOST 296 Working Group 3 “Space-based systems” activities and results
Warnant, René ULg

Conference (2007, July)

Detailed reference viewed: 8 (0 ULg)
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See detailUsing survey data to resolve the exchange risk exposure puzzle
Muller, Aline ULg; Jongen, Ron; Verschoor, Willem

Conference (2007, June 30)

Detailed reference viewed: 3 (0 ULg)
Peer Reviewed
See detailOffice Markets and Urban Mutations in Belgium
Halleux, Jean-Marie ULg

Conference (2007, June 29)

Detailed reference viewed: 2 (0 ULg)
Peer Reviewed
See detailCompte-rendu des travaux de l'atelier thématique "Scale, Time and Space"
Van Ruymbeke, Muriel ULg

Conference (2007, June 29)

Detailed reference viewed: 8 (0 ULg)
See detailEmpty housing and disurbanisation in Wallonia
Halleux, Jean-Marie ULg

Conference (2007, June 28)

Detailed reference viewed: 35 (1 ULg)
See detailEvidence of upward filed-aligned currents at the open-closed field line boundary in Saturn's noon magnetosphere: observations and theory
Bunce, E. J.; Cowley, S. W. H.; Talboys, D. L. et al

Conference (2007, June 26)

Detailed reference viewed: 5 (0 ULg)
See detailExploration of the neuronal substrates of Directed Forgetting with fMRI.
Feyers, Dorothée ULg; Hogge, Michaël; Salmon, Eric ULg et al

Conference (2007, June 26)

Detailed reference viewed: 4 (2 ULg)
See detailJupiter's changing auroral location
Grodent, Denis ULg; Bonfond, Bertrand ULg; Radioti, Aikaterini ULg et al

Conference (2007, June 25)

Detailed reference viewed: 2 (1 ULg)
See detailThe auroral footprint signatures of satellites on Jupiter
Gérard; Bonfond, Bertrand ULg; Grodent, Denis ULg

Conference (2007, June 25)

Detailed reference viewed: 3 (0 ULg)
See detailCassini UVIS Observations of Saturn's Auroras
Pryor, W. J.; Ajello, J. M.; Gustin, Jacques ULg et al

Conference (2007, June 25)

Detailed reference viewed: 15 (3 ULg)
See detailThe morphology of the X-ray emission above 2 keV from Jupiter's aurorae
Elsner, R. F.; Branduardi-Raymont, G.; Galand, M. et al

Conference (2007, June 25)

Detailed reference viewed: 5 (0 ULg)
See detailEntreprendre au féminin, une réalité multiple, des attentes différenciées
Cornet, Annie ULg

Conference (2007, June 22)

Detailed reference viewed: 96 (1 ULg)
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See detailUne rétrospective du Fonds des Communes : objectifs et indicateurs
Husson, Jean-François ULg

Conference (2007, June 19)

Cette présentation dresse l'historique du Fonds des communes en Wallonie et discute des objectifs énoncés du politique au regard des mécanismes et formules de répartition.

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See detailHemocompatibility study of new functionalized polycations tailored to modify the surface properties of red blood cells
Grandfils, Christian ULg; Riquelme, B; Foresto, P et al

Conference (2007, June 19)

Detailed reference viewed: 11 (0 ULg)
See detailFonds des communes et externalités
Halleux, Jean-Marie ULg

Conference (2007, June 19)

Detailed reference viewed: 36 (1 ULg)
Peer Reviewed
See detailPhotosynthesis in picoeucaryote algae, the Ostreococcus case
Cardol, Pierre ULg

Conference (2007, June 19)

Detailed reference viewed: 14 (0 ULg)
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See detailEffet de l’expression hétérologue d’une oxydase alternative sur le protéome mitochondrial et cellulaire de Saccharomyces cerevisiae
Mathy, Grégory ULg

Conference (2007, June 15)

L’oxydase alternative (AOX) est une ubiquinol-oxygène oxido-réductase qui au niveau mitochondrial, catalyse l’oxydation de l’ubiquinol en transférant directement ses électrons à l’oxygène. De part son ... [more ▼]

L’oxydase alternative (AOX) est une ubiquinol-oxygène oxido-réductase qui au niveau mitochondrial, catalyse l’oxydation de l’ubiquinol en transférant directement ses électrons à l’oxygène. De part son activité catalytique, cette protéine entre en compétition avec le complexe III et est donc un système dissipateur d’énergie puisque les électrons transférés par AOX à l’oxygène ne contribueront pas à l’établissement du gradient électrochimique de protons par la voie des cytochromes. Dans cette étude, nous avons voulu déterminer l’impact de l’expression hétérologue d’AOX chez un organisme qui en est naturellement dépourvu : Saccharomyces cerevisiae. L’expression d’AOX chez S. cerevisiae est fonctionnelle et conduit à une augmentation du temps de génération de 30% par rapport à la souche contrôle. De manière à identifier les voies métaboliques affectées par l’expression d’AOX chez la levure, nous avons réalisés une étude protéomique sur le protéome mitochondrial et cellulaire par l’approche SILAC. Le SILAC (stable isotopic labelling by amino-acid in cell culture) est une technique de protéomique comparative qui permet de calculer directement les changements de niveau d’expression des protéines par spectrométrie de masse, contrairement aux gels 2D, ou les changements sont estimés par densitométrie. Cette technique se base sur l’incorporation d’un acide aminé « lourd » ou « léger » lors de la traduction des protéines lors des cultures cellulaire. L’incorporation de ces acides aminé va induire en spectrométrie de masse, un décalage de masse entre deux peptides de même séquence et rendre possible directement la comparaison des niveau d’expression a calculant le rapport d’intensité des deux pics. En comparant le protéomes mitochondrial, nous avons remarqué une augmentation générale du niveau d’expression de tous les enzymes du cycle de Krebs. Cette augmentation est accompagnée par une augmentation du niveau d’expression des NADH déshydrogénases interne et une diminution de la NADH déshydrogénase externe suggérant une augmentation de l’entrée des électrons dans la chaîne respiratoire via la production d’équivalents réducteurs par le cycle de Krebs plutôt que par les équivalent réducteurs issus du cytoplasme. En comparant les protéomes cellulaires, nous avons observés une diminution globale de toutes les protéines mitochondriales suggérant une diminution de la masse mitochondriales par cellules. Cette diminution est accompagnée par une augmentation générale de la glycolyse d’un facteur 2,5. [less ▲]

Detailed reference viewed: 35 (4 ULg)
See detailStructure and production of mesozooplankton in Lake Kivu (East Africa)
Isumbisho, Pascal; Sarmento, Hugo; Darchambeau, François ULg et al

Conference (2007, June 12)

See detailCarbon dioxide fluxes in Lake Kivu
Borges, Alberto ULg; Delille, Bruno ULg; Descy, Jean-Pierre et al

Conference (2007, June 12)

Detailed reference viewed: 4 (2 ULg)
See detailPlanktonic Archaea in Lake Kivu
Llirós, Marc; Darchambeau, François ULg; Plasencia, Anna et al

Conference (2007, June 12)

Detailed reference viewed: 8 (3 ULg)
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See detailLa défaillance des PME : processus et (auto)diagnostic
Crutzen, Nathalie ULg; Van Caillie, Didier ULg

Conference (2007, June 11)

This presentation provides both a large overview of the different processes leading to business failure in SMEs and a proposal of a structured tool organized as a self-diagnosis mechanism to prevent ... [more ▼]

This presentation provides both a large overview of the different processes leading to business failure in SMEs and a proposal of a structured tool organized as a self-diagnosis mechanism to prevent bankruptcy in a particular SME. [less ▲]

Detailed reference viewed: 148 (18 ULg)
See detailStructural Fire Safety Assessment through numerical modelling
Franssen, Jean-Marc ULg

Conference (2007, June 11)

Detailed reference viewed: 18 (2 ULg)
See detailTypologie physique des drogues de synthèse
Rubini, Aurore; Brostaux, Yves ULg

Conference (2007, June 11)

Detailed reference viewed: 57 (2 ULg)
Peer Reviewed
See detailMetafiction in Frame's Literature for Children
Delrez, Marc ULg

Conference (2007, June 08)

Detailed reference viewed: 5 (1 ULg)
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See detailUtilisation des techniques de traçage en hydrogéologie. Investigation et quantification des interactions rivière-nappe par traçage, monitoring des niveaux d'eau et modélisation
Brouyère, Serge ULg; Batlle-Aguilar, Jordi

Conference (2007, June 08)

Ce séminaire visait à présenter à des étudiants de l'EIER les grands principes des techniques de traçage en hydrogéologie, accompagné d'une illustration avec des résultats d'investigations menées sur un ... [more ▼]

Ce séminaire visait à présenter à des étudiants de l'EIER les grands principes des techniques de traçage en hydrogéologie, accompagné d'une illustration avec des résultats d'investigations menées sur un site contaminé. [less ▲]

Detailed reference viewed: 26 (0 ULg)
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See detailTop-Down Proteomics using Matrix-Enhanced ISD
Demeure, Kevin ULg; Quinton, Loïc ULg; Gabelica, Valérie ULg et al

Conference (2007, June 05)

Detailed reference viewed: 10 (1 ULg)
Peer Reviewed
See detailJanet Frame's Self-Writing
Delrez, Marc ULg

Conference (2007, June 02)

Detailed reference viewed: 5 (1 ULg)
See detailNation und Publikum in der spanischen Literatur des 19. Jahrhunderts
Ceballos Viro, Alvaro ULg

Conference (2007, June 02)

Detailed reference viewed: 1 (0 ULg)
See detailHydraulic modelling along river Ourthe considering impacts of climate change
Dewals, Benjamin ULg

Conference (2007, June 01)

Detailed reference viewed: 4 (1 ULg)
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See detailThe Faint Hot Component of Debris Disks Revealed by Infrared Interferometry
di Folco, E.; Absil, Olivier ULg; Augereau, J.-C. et al

Conference (2007, June 01)

Very few main-sequence stars exhibit warm dust in their 5-10AU close environment, where terrestrial planets are expected to have formed. Near-infrared interferometry is a powerful means, combining high ... [more ▼]

Very few main-sequence stars exhibit warm dust in their 5-10AU close environment, where terrestrial planets are expected to have formed. Near-infrared interferometry is a powerful means, combining high dynamic range and high spatial resolution, to directly detect faint emission from hot grains in exozodiacal clouds. We will review the results of our search for 2 micron excesses around Vega-like stars, including the nearby Sun-like stars Tau Ceti and Epsilon Eridani, with the FLUOR interferometric instrument and the CHARA Array of telescopes. Our recent detections, combined with Spitzer observations around 10 micron, put strong constrains on the properties and distribution of hot grains in these inner planetary systems. We will present the conclusions of our preliminary modeling for the detected hot grains as well as their implication for the selection of targets for future planet finding missions like DARWIN or TPF. [less ▲]

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See detailHydraulic modelling along river Ourthe
Dewals, Benjamin ULg; Detrembleur, Sylvain ULg; Archambeau, Pierre ULg et al

Conference (2007, June 01)

Detailed reference viewed: 10 (3 ULg)
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See detailAnalysis of hydraulic hybrid vehciles and economical comparison with hybrid electric vehicles
Louvigny, Yannick ULg; Nzisabira, Jonathan; Duysinx, Pierre ULg

Conference (2007, June 01)

Hybrid Hydraulic Vehicle (HHV) technology is an alternative to HEV. This technology deserves new attention because of recent development in reversible hydraulic motor pumps with high efficiency. The HHV ... [more ▼]

Hybrid Hydraulic Vehicle (HHV) technology is an alternative to HEV. This technology deserves new attention because of recent development in reversible hydraulic motor pumps with high efficiency. The HHV technology is based on parallel architecture of motor assist systems. A first preliminary study investigated the fuel consumption of a passenger car, a SUV and an urban bus. It clearly demonstrated that the fuel efficiency benefits are the better for heavy vehicles with frequent stops and starts. The second part of the work then compared both HEV and HHV buses. The fuel consumption is simulated using ADVISOR on the basis of 3 SORT driving cycles. The results showed that the HHV are penalized by his weight but they can be economically interesting because of the lower cost and longer life time of the hydraulic system. [less ▲]

Detailed reference viewed: 103 (15 ULg)
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See detailExploration of the neuronal substrates of Directed Forgetting with fMRI
Feyers, Dorothée ULg; Hogge, Michaël; Salmon, Eric ULg et al

Conference (2007, June 01)

Detailed reference viewed: 10 (4 ULg)
Peer Reviewed
See detailEffect of 2D and 3D vision on the learning of fine motor skills according to the instrumental dimension: The case of minimal invasive surgery
Blavier, Adelaïde ULg; Nyssen, Anne-Sophie ULg

Conference (2007, June 01)

New technology in surgery is more and more present and allows to study cognitive processes in complex and natural environment. Comparing to classical minimal access surgery, a new robotic system allows to ... [more ▼]

New technology in surgery is more and more present and allows to study cognitive processes in complex and natural environment. Comparing to classical minimal access surgery, a new robotic system allows to recover a 3D view and all degrees of freedom for instruments movement. The purpose of this study was to evaluate the perceptual (2D vs 3D view) and instrumental (classical versus robotic) impacts of this new robotic system on learning curves. 40 medical students without any surgical experience were randomized into 4 groups (classical laparoscopy with 3D-direct view or with 2D-indirect view, robotic system in 3D or in 2D) and repeated a surgical task 6 times. After these 6 repetitions, they performed 2 trials with the same technique but in the other viewing condition (perceptive switch). Finally, subjects performed last three trials with the technique they never used (technical switch). We measured the speed, the accuracy and their subjective impressions about their performance (satisfaction, self-confidence and difficulty). Our results showed better performance and improvement in 3D view than in 2D view, whatever the instrumental aspect. Participants reported less mastery, familiarity, self-confidence and more difficulty in classical laparoscopy with 2D view than in the other conditions. In conclusion, robotic surgery improves surgical performance and learning, particularly by 3D view advantage. However, the bad performances after the perceptive and technical switches emphasize the need to adapt and pursue training also with traditional technology in order to prevent risks when a robotic procedure has to be converted in a classical laparoscopic procedure. [less ▲]

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See detailConfiance et commerce électronique: une problématique différenciée selon la nature des transactions
Lisein, Olivier ULg

Conference (2007, June)

Malgré la hausse sensible que connaît l’e-commerce, la problématique de la confiance afférente aux transactions électroniques reste d’actualité. Axée sur les choix des entreprises en matière d’e-business ... [more ▼]

Malgré la hausse sensible que connaît l’e-commerce, la problématique de la confiance afférente aux transactions électroniques reste d’actualité. Axée sur les choix des entreprises en matière d’e-business/e-commerce, notre contribution propose d’analyser l’influence qu’est susceptible de revêtir à cet égard la nature des transactions, vue sous les caractéristiques de spécificité des actifs et de récurrence de la relation (Williamson, 1975, 1985). Il en résulte quatre comportements distincts de la part des entreprises, en lien avec leur perception des enjeux liés à la confiance et au risque entourant les transactions électroniques. Basé sur l’analyse transversale d’une vingtaine d’études de cas, notre propos met ainsi en évidence des positionnements stratégiques contrastés et un recours à des mécanismes de protection différents suivant la spécificité des actifs échangés et la récurrence de la relation entretenue avec les cocontractants. [less ▲]

Detailed reference viewed: 166 (12 ULg)
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See detailStructured covariance matrix estimation for the range-dependent problem in STAP
Neyt, Xavier; Druyts, Pascal; Acheroy, Marc et al

Conference (2007, June)

Detailed reference viewed: 7 (0 ULg)
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See detailEnergy audit of air conditioning systems
Andre, Philippe ULg; Hannay, Cl.; Hannay, J. et al

Conference (2007, June)

The work presented here consists in developing an audit methodology, with appropriate simulation tools and benchmarks. Several case studies are used to support, to test and to illustrate these ... [more ▼]

The work presented here consists in developing an audit methodology, with appropriate simulation tools and benchmarks. Several case studies are used to support, to test and to illustrate these developments. Each case study is described according to a standard format, in order to make the data easy to re-use in the future. The audit of the HVAC system consists in analyzing the information available about actual energy performances and in identifying the most attractive retrofit opportunities. Focus is given here to cooling energy consumption, but it could never be completely dissociated from heating requirements. An example of case study is presented in the paper to give a first idea of what could be the (difficult) task of the energy auditor. One of the main difficulties comes from the too many information lacks. Filling these lacks would require, in most case, more detailed energy records on site. Simulation models may help a lot, for a better interpretation of on site records and also for a safe identification of the most promising retrofit opportunities. Such models and examples of simulations are presented in the paper. [less ▲]

Detailed reference viewed: 39 (5 ULg)
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See detailL’Inventaire Systémique de Qualité de Vie pour Enfants (ISQV-E©) : Premiers éléments de validation
Missotten, Pierre ULg; Lemétayer, Fabienne; Spitz, Elisabeth et al

Conference (2007, June)

Detailed reference viewed: 56 (2 ULg)
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See detailFriendly simulation of residential heating systems.
Andre, Philippe ULg; Georges, Bernard ULg; Lebrun, Jean ULg et al

Conference (2007, June)

Until now, the choice of a heating system is, in most cases, rather intuitive, but not based on significant comparisons among the many options available on the market. Friendly calculation tools are badly ... [more ▼]

Until now, the choice of a heating system is, in most cases, rather intuitive, but not based on significant comparisons among the many options available on the market. Friendly calculation tools are badly needed. A prototype of simulation model is shortly presented in this paper. It is designed as a preliminary design tool, allowing the different partners of a project to evaluate the energy impact of the very first design options: building envelope heat transfer coefficients, glazing areas, orientations, solar factors, ventilation mode, heat emission, distribution, generation and control strategy. The heating demand is calculated hour by hour with consideration to the time variations of inside and outside temperatures and free gains, to the control law and to the heating power actually available. The emitter is a water-ambient heat exchanger. It may have some thermal mass. Two emitters are here proposed: the radiator and the flow heating system. A steady state water distribution model is included in this simulation; it takes heat losses in unheated spaces into account: Three typical heating sources are proposed: classical boiler, condensing boiler and heat pump. All heat generators are here simulated with the help of very simple polynomial (“daughter”) models. The polynomial expressions are fitted on the simulation results obtained with reference (“mother”) models, themselves fitted on experimental data available. Examples of simulation results are presented in the paper. [less ▲]

Detailed reference viewed: 45 (4 ULg)
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See detailAdaptive estimators of proficiency in adaptive testing
Blais, Jean-Guy; Raîche, Gilles; Magis, David ULg

Conference (2007, June)

Detailed reference viewed: 5 (2 ULg)
See detailThe respiratory disabled patient: case discussion
Brichant, Jean-François ULg

Conference (2007, June)

Detailed reference viewed: 3 (0 ULg)
See detailClinical Cases. Workshop
Brichant, Jean-François ULg; Magnusson, L.

Conference (2007, June)

Detailed reference viewed: 2 (0 ULg)
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See detailGestion de la diversité : un enjeu stratégique ?
Cornet, Annie ULg; Delhaye, Christine ULg

Conference (2007, June)

Detailed reference viewed: 90 (0 ULg)
See detailEntanglement of localized states
Martin, John ULg; Giraud, Olivier; Georgeot, Bertrand

Conference (2007, June)

Detailed reference viewed: 4 (1 ULg)
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See detailDoes turbulence affect the habitat choice of Atlantic salmon parr?
Enders, Eva C; Ovidio, Michaël ULg; Roy, Mathieu L et al

Conference (2007, June)

Habitat preferences of Atlantic salmon parr are commonly described using mean flow velocity, water depth, and substrate as habitat variables, and a variety of habitat models have been developed using ... [more ▼]

Habitat preferences of Atlantic salmon parr are commonly described using mean flow velocity, water depth, and substrate as habitat variables, and a variety of habitat models have been developed using these variables to predict habitat quality. However, Atlantic salmon parr live in highly turbulent streams and rivers, in which intense fluctuations of flow velocity occur. Habitat preferences that consider the high variability of flow velocity have not been studied, and this although it has been shown in laboratory experiments that turbulence may affect the behavior and energetics of fish. Consequently, we studied the use of turbulent flow by Atlantic salmon parr in Patapédia River, Québec, Canada using radio-telemetry. We analyzed summer habitat preferences of individual parr in relation to several dynamic hydraulic variables such as standard deviation of flow velocity, turbulent kinetic energy, Froude number, and shear stress, and compared them with the habitat availability within the river reach. Our results revealed that in a natural flow environment, parr display a high individual variability in habitat preferences in relation to flow turbulence. Such heterogeneous habitat preferences suggest that individuals are not constrained to single habitat types and exhibit flexible habitat use. Furthermore, no differences were observed in habitat preferences between the four daily periods (dawn, day, dusk, and night) within individual parr. [less ▲]

Detailed reference viewed: 33 (2 ULg)
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See detailA solid-state phase conjugate mirror for space Lidar systems
Brignon, Arnaud; Richard, Sébastien; Georges, Marc ULg et al

Conference (2007, June)

Detailed reference viewed: 20 (3 ULg)
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See detailsimulators as research tools.
Nyssen, Anne-Sophie ULg

Conference (2007, June)

Detailed reference viewed: 10 (3 ULg)
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See detailBehavioural tactics and spawning activity of rheophilic cyprinids radio-tracked in the transition zone between natural flow and minimum flow conditions
Ovidio, Michaël ULg; Guillaume, Nicolas; Hallot, Eric ULg et al

Conference (2007, June)

Using water resources for hydro-electricity production influences and limits the quality and quantity of habitat available for use by resident fishes. Changes in the fish community structure after setting ... [more ▼]

Using water resources for hydro-electricity production influences and limits the quality and quantity of habitat available for use by resident fishes. Changes in the fish community structure after setting minimum flow conditions have been more frequently studied than the behavioural adaptations of fish living in the vicinity of the disturbed river section. In the River Amblève (River Meuse basin, Belgium), a hydraulic power plant bypasses the river over a length of 10 km. Adult nase Chondrostoma nasus (n=10) and barbel Barbus barbus (n=8) were captured in the restitution zone of the turbinated flow several weeks before their reproduction periods. They were equipped with implant radio transmitters and manually and intensively tracked over several months to more than 1 year. The environmental conditions (water temperature and flow) as well as the geomorphology of the river were compared in both natural and flow-regulated sections. Nase and barbel demonstrated the capacity to map their contrasted environment and adapted their space and habitat utilisation as well as the choice of their spawning sites in relation with their specific biological characteristics and the environmental variations. The results are discussed in the context of the management of fish movements in flow-regulated rivers. [less ▲]

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See detailAccompagnement et Contrôle des Chômeurs de Longue Durée en Wallonie: Evaluation d'un Nouveau Dispositif
Fonder, Muriel; Lejeune, Bernard ULg

Conference (2007, May 31)

En juillet 2004, le gouvernement fédéral belge lançait un nouveau dispositif d’accompagnement et de contrôle des chômeurs de longue durée. Ce nouveau dispositif allie un renforcement des actions ... [more ▼]

En juillet 2004, le gouvernement fédéral belge lançait un nouveau dispositif d’accompagnement et de contrôle des chômeurs de longue durée. Ce nouveau dispositif allie un renforcement des actions d’accompagnement (aide à la recherche d’emploi et offre de formations) à un système de contrôle basé sur la convocation des chômeurs à un ou plusieurs entretien(s) visant à vérifier et stimuler leur recherche d’emploi, la convocation au premier entretien étant précédée d’une lettre d’avertissement. S’appuyant sur un échantillon de plus de 90.000 demandeurs d’emploi wallons (la région francophone de Belgique), l’objet de ce papier est d’évaluer si ce nouveau dispositif a permis d’améliorer l’accès à l’emploi ou à une formation des chômeurs, par rapport à ce qui ce serait passé en son absence. L’effet du dispositif est évalué au travers de modèles de durée discrets et est estimé par double différence, sur base de l’observation de trajectoires individuelles avant et après la mise en place du dispositif, pour le population cible du dispositif et pour une population de contrôle. Les résultats montrent que le dispositif a eu un effet relatif substantiel, bien que limité en termes absolus, sur l’accès à une formation de la majorité des chômeurs ciblés. Les résultats sont plus décevants en ce qui concerne l’accès à l’emploi, pour lequel une amélioration relativement plus modeste n’est observée que pour une minorité des chômeurs ciblés. [less ▲]

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See detailPromoting Secularism? Public Financing of Humanist/Atheist Groups
Husson, Jean-François ULg; Lefebvre, Alice

Conference (2007, May 29)

This paper compares the ways of recognition and public support to humanist/atheist organisations in 6 European countries. They are also compared with dispositions regarding religions - and more ... [more ▼]

This paper compares the ways of recognition and public support to humanist/atheist organisations in 6 European countries. They are also compared with dispositions regarding religions - and more particularly islam - in Belgium, The Netherlands, Britain, France, Germany and Italy. These countries have been chosen because of the difference of regimes in supporting religions and philosophical communities. [less ▲]

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See detailLa participation et l’intérêt politique des jeunes de 16-18 ans à Liège : actualisation des données de 1990
Fournier, Bernard ULg; Pironet, Alexia; Reuchamps, Min ULg

Conference (2007, May 26)

Drawing from a survey on 1437 students (16-18 y. old), we explore in this paper the political interest and participation of young people.

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See detailRelativisme, pluralisme et socialisation politique : l’apport de Jean Piaget au débat
Fournier, Bernard ULg

Conference (2007, May 25)

Recent developments in theory insist on the existence of a plurality of individual realities within the same social group. However, the logic of understanding used to analyse these realities in the ... [more ▼]

Recent developments in theory insist on the existence of a plurality of individual realities within the same social group. However, the logic of understanding used to analyse these realities in the empirical research still relies too much on a univocal perspective in which the concepts are perceived to be homogeneous. This manner of approaching reality legitimates the linear explanations of attitudes and individual behaviours. But a reflection on the effective processes of constructing the individual worlds of reference based on a psychological perspective strongly challenges this logic. Thus, the works of Jean Piaget clearly show that the individual is not a passive being in the dynamics of appropriating the world, but that he or she assimilates the social context, accommodates it to what he or she already understands and thereby transforms it. This theoretical framework opens the path to an interesting form of conceptual relativism where every concept has to be replaced into the context as it is structured by the individuals’ worlds of reference. This relativity presents a challenge to empirical research: Which principle of synthesis would allow us to respect the theoretical plurality proposed by the piagetian interpretation? So far, we have mostly used a methodology based on the classificatory approach in our research, but we are by now more aware of its limitations as well. [less ▲]

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See detailPragmatique et auto-fondation de la Science chez Hegel
Seba, Jean-Renaud ULg

Conference (2007, May 25)

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See detailAdaptation of the voice handicap index to the laryngectomized patient
Morsomme, Dominique ULg; Toledo, Angeline; Verduyckt, Ingrid et al

Conference (2007, May 24)

Objective: The aim of our study was to adapt the VHI to the tracheo-oesophageal voice patients and to evaluate its coherence and reproducibility. Method: Firstly, 9 items from the original VHI, identified ... [more ▼]

Objective: The aim of our study was to adapt the VHI to the tracheo-oesophageal voice patients and to evaluate its coherence and reproducibility. Method: Firstly, 9 items from the original VHI, identified in a former study as lacking pertinence to the patient group, were rejected. Secondly, the 21 items left were modified and 9 new items were created based on a review of the literature and on the opinion of clinicians. Lastly, following the opinion of laryngectomised patients we created and added another 10 items to the scale, resulting in 39 items. The reliability and reproducibility of this new scale were investigated on a population of 18 laryngectomised patients. Results: The statistical analyses permitted us to reduce the scale to 30 items. The mean scores obtained on the new adapted VHI are respectively 17.7 ± 10.2 (SD) for the functional scale, 11.5 ± 7.1 for the emotional scale, 17.0 ± 7.3 for the physical scale and 46.2 ± 20.4 for the global score. The test-retest correlations for the global score and for the three sub scales are strong and very significant (Global: r = 0.808; F: r = 0.803; E: r = 0.712, P: r = 0.883, p<0.001). The test-retest stability is thus excellent. The results of the tracheo-oesophageal voice subjects on this scale are revealing a moderate impact of their vocal impairment in their daily life. [less ▲]

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See detailPTH in hemodialyzed patients
Cavalier, Etienne ULg

Conference (2007, May 24)

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See detailPrématurité : problème d’alimentation et devenir staturo-pondéral
Senterre, Thibault ULg

Conference (2007, May 24)

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See detailConnaissance et Reconnaissance chez Sartre
Cormann, Grégory ULg

Conference (2007, May 24)

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See detailRecompositions et démonopolisation de l’activité judiciaire
Dubois, Christophe ULg; Lejeune, Aude ULg

Conference (2007, May 23)

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See detailEffects of persistent organic pollutants on the thyroid function of the sea bass (Dicentrarchus labrax), an endocrine disruption?
Schnitzler, Joseph ULg; Koutrakis, Emmanuil; Thomé, Jean-Pierre ULg et al

Conference (2007, May 23)

Organochlorinated compounds such as polychlorobiphenyls (PCB), dichloro-diphenyl-dichloroethylene (DDE) and dichloro-diphenyl-trichloroethane (DDT) have the characteristic to influence the endocrine ... [more ▼]

Organochlorinated compounds such as polychlorobiphenyls (PCB), dichloro-diphenyl-dichloroethylene (DDE) and dichloro-diphenyl-trichloroethane (DDT) have the characteristic to influence the endocrine system of many fish species and mammals and are thus qualified as endocrine disruptors. The objective of this project aims a better understanding of the effects of these compounds on the thyroid function of European seabass (Dicentrarchus labrax). Thyroid tissue and muscle of 46 seabass from the Aegean Sea in Greece (fished and aquaculture, n=15 and n=31, respectively) were sampled. The levels in PCBs, DDT and DDE were evaluated in the muscles of 30 individuals. The diameter of follicles and the epithelial cell heights were measured in each individual by optical microscopy. The concentration of the thyroid hormone T4 (thyroxin) was measured by Radio-Immuno-Assay (RIA). Finally, the potential relationships between these thyroid parameters and these organic compounds were investigated using factor analysis and multiple regressions. A significant relationship between persistent organic pollutants (muscular PCBs and DDT concentration) and the different thyroid parameters (diameters of follicles, epithelial cell heights and muscular T4 levels) could be observed. We cannot exclude the assumption that an endocrine disruption of thyroid gland related to these pollutants could be the origin of the modifications of these thyroid parameters. [less ▲]

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See detailMicroenvironmental Regulation of Vascular Homeostasis and Leakage
Sounni, Nor Eddine ULg

Conference (2007, May 22)

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See detailConférence introductive : La recherche en SIC aujourd'hui
Servais, Christine ULg; Servais, Véronique ULg

Conference (2007, May 21)

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See detailTIC, mondialisation et pouvoirs. Des mythes aux réalités
Geuens, Geoffrey ULg

Conference (2007, May 21)

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See detailTrypanosoma evansi in five inbred mouse strains: anaemia
Antoine-Moussiaux, Nicolas ULg; Desmecht, Daniel ULg

Conference (2007, May 20)

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See detailEngager des futurs enseignants dans une analyse conjointe de pratiques situées, une compétence travaillée avec les futurs formateurs
Beckers, Jacqueline ULg; Van der Linden, Sylvie ULg

Conference (2007, May 18)

Un module de la licence en Sciences de l’Education de l’ULg (université belge) se donne spécifiquement pour objectif de préparer les étudiants au métier de formateur d’enseignants. Le stage de la première ... [more ▼]

Un module de la licence en Sciences de l’Education de l’ULg (université belge) se donne spécifiquement pour objectif de préparer les étudiants au métier de formateur d’enseignants. Le stage de la première partie de ce module, appelé « compagnonnage réflexif », invite chaque futur formateur d’enseignants à accompagner un futur enseignant. La compétence travaillée est d’ « engager autrui dans une analyse de son action professionnelle dans la perspective de sa régulation ». Cette compétence se complexifie, au terme des accompagnements, lorsque les futurs enseignants animent des séances d’analyse collective (petits groupes de futurs enseignants) des pratiques d’enseignement des futurs enseignants accompagnés. La conceptualisation des actions professionnelles est l’enjeu de ces séances. Durant celles-ci, les futurs formateurs sont filmés en vue d’analyses réflexives de leur pratique. C’est l’analyse de cette étape de l’apprentissage des futurs formateurs et sa régulation, qui fera l’objet de cette communication. [less ▲]

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See detailJames et Husserl. Perception des formes et polarisation des flux de conscience
Leclercq, Bruno ULg

Conference (2007, May 16)

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See detailThe sense of touch or how phenomenology gives live to architecture
Dawans, Stéphane ULg

Conference (2007, May 14)

Carried by the philosophical mainstream, which had built modernity on the primacy of vision, rationalism, which gradually imposed itself as an academic discourse, soon took architecture on the path of ... [more ▼]

Carried by the philosophical mainstream, which had built modernity on the primacy of vision, rationalism, which gradually imposed itself as an academic discourse, soon took architecture on the path of abstraction. This finally proved Marshall McLuhan right, who in 1962 was legitimately going to suspect that such a bias must imply “a distortion of reality.” In this critical context and with globalisation as a backdrop, Kenneth Frampton will try to evaluate the points of resistance on which a dialectical approach could be based that might lead us out of the double dead-end of regionalism and modernism, with the sense of touch playing a crucial part. In this paper we will briefly consider how this issue was raised and particularly emphasize the prospects that a phenomenology of touch (which, according to the Livre blanc published in 2004 by the Institut de la Cambre does frighten our contemporaries) can offer to architecture and to the teaching thereof. [less ▲]

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See detailThe job Demands-Resources Model and management commitment to safety applied to safe behaviour.
Hansez, Isabelle ULg; Chmiel, N.

Conference (2007, May 12)

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See detailMeasuring a conceptual model of military turnover : a longitudinal perspective.
Bertrand, Françoise ULg; Schreurs, B.; Lescreve, F. J. et al

Conference (2007, May 12)

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See detailVocal exercises adapted to the singing voice.
Morsomme, Dominique ULg; Verduyckt, Ingrid

Conference (2007, May 12)

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