References of "Scientific congresses and symposiums"
     in
Bookmark and Share    
Full Text
See detailLe Candide anglois: un cas complexe de "palimpseste"
Tilkin, Françoise ULg

in Cronk, Nicholas; Ferrand, Nathalie (Eds.) Les 250 ans de Candide. Lectures et relectures (2014)

Detailed reference viewed: 35 (8 ULg)
See detailLa contribution des lobes frontaux au fonctionnement exécutif
Collette, Fabienne ULg

Conference (2014)

Detailed reference viewed: 15 (1 ULg)
Full Text
Peer Reviewed
See detailThe determinations of household agricultural land use strategies in Red River Delta, Vietnam
Nguyen Thi, Dien; Vu Dinh, Ton; Lebailly, Philippe ULg et al

Conference (2014)

This research presents the determinations of household land use strategy in the context of the rapid rural changes due to the industrialization and urbanization in Vietnam. The mechanism that turns land ... [more ▼]

This research presents the determinations of household land use strategy in the context of the rapid rural changes due to the industrialization and urbanization in Vietnam. The mechanism that turns land to livelihood from both productive and non-productive processes is investigated to understand the different land use strategies of smallholders in Red River Delta region. Based on the presence of migrating members, the total selected 191 households in Hai Duong province were divided into 3 different groups to do the surveys. The research results show that local land use strategies are various in which 79.06% of surveyed households maintain the allocated land for agricultural production while 65.97% of households leave land idly at least once a year. The factors from productive process such as small landholding, high production cost and overall downward income from agricultural production meantime the greater opportunities from non-farm jobs are the main socio-economical determinations of agricultural land abandonment or less effective use. The security questions of shifting livelihood between farming and non – farming sectors, the inter-household arrangements, the social supports and the institutional constraints are non-productive elements that make the exchange and other forms of commercializing agricultural land are less prominent. The complexity of household land use strategy and its determinations not only reflects the dynamism and flexibility of peasant’s livelihood adaptation but also explain why the land concentration does not proceed faster in Red River Delta region of Vietnam. [less ▲]

Detailed reference viewed: 18 (2 ULg)
Full Text
Peer Reviewed
See detailImplicit implementation of the Prevost model
Cerfontaine, Benjamin ULg; Charlier, Robert ULg

in Hicks, Michael A.; Brinkgreve, Ronald, R.J; Rohe, Alexander (Eds.) Numerical Methods in Geotechnical Engineering (2014)

The Prevost model for cohesionless soils (Prevost 1985) is currently used for the modelling of their cyclic behaviour, especially in earthquake engineering (Zerfa and Loret 2003) and (Yang and Elgamal ... [more ▼]

The Prevost model for cohesionless soils (Prevost 1985) is currently used for the modelling of their cyclic behaviour, especially in earthquake engineering (Zerfa and Loret 2003) and (Yang and Elgamal 2008). It’s made of conical yield surfaces that allow for plastic deformations in both loading and unloading. Its non-associated volumetric flow rule can roughly take into account pore pressure build-up and cyclic mobility. The method of implementation of a constitutive law is a crucial issue (Montáns and Caminero 2007) and (Mira et al. 2009). On one hand the accuracy of the solution must be ensured, especially when a large number of cycles are considered. But on the other hand, the cost of the computation must be minimized which implies step size as large as possible. In this paper, an implicit implementation of the Prevost model is proposed. The plastic flow rule is computed through a trapezoidal rule, at the time step n + 1/2, in order to increase the accuracy.An iterative process has to be solved, due to the implicit formulation.The Jacobian matrix of the internal Newton-Raphson process is computed analytically to enhance efficiency. The algorithm is implemented in the finite element code LAGAMINE that carries out fully-coupled analysis. Simulations of triaxial tests are compared with “exact” solution. [less ▲]

Detailed reference viewed: 11 (3 ULg)
Full Text
Peer Reviewed
See detailPhotocatalytic degradation of water pollutants with visible light-sensitized TiO2 xerogels
Tasseroul, Ludivine ULg; Pirard, Sophie ULg; Lambert, Stéphanie ULg et al

in Récents Progrès en Génie des Procédés (2014), 106

To extend its photocatalytic activity to visible light, TiO2 has been doped in situ through the cogelation sol-gel proces with two dyes : free metal tetra(4-carboxyphenyl)porphyrin and nickel tetra(4 ... [more ▼]

To extend its photocatalytic activity to visible light, TiO2 has been doped in situ through the cogelation sol-gel proces with two dyes : free metal tetra(4-carboxyphenyl)porphyrin and nickel tetra(4-carboxyphenyl)porphyrin. DR and FT-IR spectroscopies have been performed to determine the interaction between porphyrins and TiO2. Cristallinity and specific surface area have been measured by XRD and N2 adsorption. The photoactivity of the doped TiO2 xerogels has been evaluated for p-nitrophenol (a model water pollutant) degradation under visible light and a kinetic study has been performed. The samples allow the degradation of 40% of p-nitrophenol in 6 h which makes them very promising for water decontamination under natural light. A kinetic study of p-nitrophenol degradation with the Ni-doped catalyst has shown that the best kinetic model involves one type of active site corresponding to the hole h+ of electron-hole pairs created at the TiO2 surface by light. The rate determining step consists of the surface reaction between adsorbed p-nitrophenol and adsorbed OH• radicals. [less ▲]

Detailed reference viewed: 23 (5 ULg)
Full Text
Peer Reviewed
See detailAnalytic Model for The Motion About An Oblate Planet in The Presence Atmospheric Drag
Martinusi, Vladimir ULg; Dell'Elce, Lamberto ULg; Kerschen, Gaëtan ULg

in Advances in The Astronautical Sciences (2014)

The paper introduces a new model for the motion about an oblate planet under the influence of the atmospheric drag. Both qualitative and quantitative insights are revealed, as well as closed-form ... [more ▼]

The paper introduces a new model for the motion about an oblate planet under the influence of the atmospheric drag. Both qualitative and quantitative insights are revealed, as well as closed-form equations of motion. The main tool consists in averaging the effects of both perturbations (oblateness and drag), and deriving the variational equations for the vectorial orbital elements. The model is singularity-free and may serve as an initial guess for control problems, as well as an analytic propagator. [less ▲]

Detailed reference viewed: 21 (6 ULg)
Full Text
Peer Reviewed
See detailMiddle Miocene climate and vegetation model reconstructions and their validation with the NECLIME database
François, Louis ULg; Henrot, Alexandra-Jane ULg; Utescher, Torsten et al

in Geophys. Res. Abstracts (2014), 16

The NECLIME database gathers data of the fossil flora recorded at many localities around the world at different times of the Miocene. François et al. (Palaeogeography, Palaeoclimatology, Palaeoecology ... [more ▼]

The NECLIME database gathers data of the fossil flora recorded at many localities around the world at different times of the Miocene. François et al. (Palaeogeography, Palaeoclimatology, Palaeoecology, 304, 359–378, 2011) have presented a new method for evaluating palaeoclimate model simulations from such fossil floras. In this method, palaeovegetation is simulated from climate model outputs, using a dynamic vegetation model. Model vegetation reconstruction is then compared to the vegetation cover indicated by the fossil flora record at the various localities, using a common classification of plant functional types (PFTs) in the data and the model. Here, we apply this method to test several published Middle Miocene climate simulations conducted with General Circulation Models of different complexity: (a) Planet Simulator, (b) FOAM-LMDZ4, (c) MPI-ESM, (d) CCSM3.0 and (4) CESM1.0. Corresponding palaeovegetation distributions are simulated with the CARAIB dynamic vegetation model, in which an upgraded vegetation classification involving 26 PFTs has been imple- mented. The NECLIME palaeoflora data from 154 localities distributed worldwide have been translated in terms of the presence/absence of these PFTs. A comparison of models and data is then undertaken globally and in selected regions of the world, using all available localities. The level of agreement varies among models, among PFTs and among regions. For instance, some models are able to produce tropical and subtropical PFTs in Europe consistently with the data, but the agreement for these PFTs may be much poorer in other parts of the world, such as in northeastern Eurasia. [less ▲]

Detailed reference viewed: 9 (1 ULg)
See detailEpigenetic effects of omega-3 FA on the immune response of broiler breeder offspring
Koppenol, A.; Everaert, Nadia ULg; Franssens, L. et al

Conference (2014)

Detailed reference viewed: 6 (0 ULg)
Full Text
Peer Reviewed
See detailEvaluation de la prévalence de la sarcopénie selon différents outils de diagnostic
Beaudart, Charlotte ULg; SLANGEN, Catherine ULg; Buckinx, Fanny ULg et al

in Gériatrie et Psychologie Neuropsychiatrie du Vieillissement (2014), 12(1), 42

Detailed reference viewed: 18 (5 ULg)
Full Text
Peer Reviewed
See detailRaymond Lemaire et la rénovation urbaine dans les années 1960-1970: entre théorie et pratique de la conservation
Houbart, Claudine ULg

in Aveta, Aldo, Di Stefano, Maurizio (Ed.) Roberto Di Stefano. Filosofia della Conservazione e prassi del Restauro (2014)

Detailed reference viewed: 49 (7 ULg)
Full Text
Peer Reviewed
See detailApprentissage par renforcement batch fondé sur la reconstruction de trajectoires artificielles
Fonteneau, Raphaël ULg; Murphy, Susan A.; Wehenkel, Louis ULg et al

in Proceedings of the 9èmes Journées Francophones de Planification, Décision et Apprentissage (JFPDA 2014) (2014)

Cet article se situe dans le cadre de l’apprentissage par renforcement en mode batch, dont le problème central est d’apprendre, à partir d’un ensemble de trajectoires, une politique de décision optimisant ... [more ▼]

Cet article se situe dans le cadre de l’apprentissage par renforcement en mode batch, dont le problème central est d’apprendre, à partir d’un ensemble de trajectoires, une politique de décision optimisant un critère donné. On considère plus spécifiquement les problèmes pour lesquels l’espace d’état est continu, problèmes pour lesquels les schémas de résolution classiques se fondent sur l’utilisation d’approxima- teurs de fonctions. Cet article propose une alternative fondée sur la reconstruction de “trajectoires arti- ficielles” permettant d’aborder sous un angle nouveau les problèmes classiques de l’apprentissage par renforcement batch. [less ▲]

Detailed reference viewed: 23 (5 ULg)
Full Text
See detailOn Interpreting g-Mode Period Spacings in sdB Stars
Charpinet, Stéphane; Brassard, Pierre; Van Grootel, Valérie ULg et al

in Astronomical Society of the Pacific Conference Series (2014), 481

Long period B subdwarf (sdB) pulsators, when observed from space with the satellites CoRoT and Kepler, show particularly rich g-mode oscillation spectra with often hundreds of frequencies. In many of ... [more ▼]

Long period B subdwarf (sdB) pulsators, when observed from space with the satellites CoRoT and Kepler, show particularly rich g-mode oscillation spectra with often hundreds of frequencies. In many of these pulsation spectra, regularities in the observed period distributions typical of high order g-modes in chemically homogeneous stars have been reported. This led to a claim that sdB stars could be much less chemically stratified than previously thought. In this paper, we show that such an interpretation is unfounded. We reinvestigate trapping effects on g-modes in sdB stars in view of current observations and show that ”standard” stratified models can also produce nearly quasi-constant period spacings in the low frequency range which are comparable to those observed in the g-mode spectra of these stars. [less ▲]

Detailed reference viewed: 16 (0 ULg)
Full Text
Peer Reviewed
See detailMeteorological variation in travel behaviour
Creemers, Lieve; Wets, Geert; Cools, Mario ULg

Conference (2014)

Weather causes a variety of impacts on the transportation system. This paper contributes to the weather-related transport literature by investigating the meteorological variation in revealed preference ... [more ▼]

Weather causes a variety of impacts on the transportation system. This paper contributes to the weather-related transport literature by investigating the meteorological variation in revealed preference travel data. The main objective of this paper is to investigate the impact of weather conditions on revealed activity participation (trip motives) and revealed modal choices in the Netherlands. To this end, data from the Dutch national travel household survey 2008 was matched to hourly weather data provided by the Royal Dutch Meteorological Institute. Two GEE-MNL models are constructed, namely one for modelling the impact of weather conditions on trip motive and one to assess the effect on modal choice. The parameter estimates of the weather variables indicate that, depending on which travel attribute one focuses, other factors might play a role. Nonetheless, fog, sunshine duration and temperature have a significant impact in both models. Unexpected is the fact that snow and ice cover do not play a role at all. Nonetheless, this finding can be accounted for by the relative low occurrence of these weather types in the study area. It is important to integrate these identified impacts of weather in travel demand modelling frameworks, since this will help to achieve a higher accuracy and more realistic traffic forecasts. This allows policy makers to make better long-term and short-term decisions to achieve various political goals, such as the development towards a sustainable transportation system. Further research in this regard, should emphasize on the role of weather conditions and activity-scheduling attributes. [less ▲]

Detailed reference viewed: 11 (2 ULg)
Full Text
Peer Reviewed
See detailDetection of near-field, low permittivity layers with Ground Penetrating Radar: analytical estimation of the reflection coefficient
Van der Wielen, Audrey; Courard, Luc ULg; Nguyen, Frédéric ULg

in LAMBOT, Sébastien (Ed.) Proceedings of 15th International Conference on ground Penetrating Radar (2014)

The reflection coefficient of GPR waves encountering embedded thin layers is commonly estimated using a plane wave, far field approximation. But when the thin layer is situated in the near field of the ... [more ▼]

The reflection coefficient of GPR waves encountering embedded thin layers is commonly estimated using a plane wave, far field approximation. But when the thin layer is situated in the near field of the antenna, the spherical nature of the waves and the possible propagation of a lateral wave into the layer may have a strong influence on the measured reflected amplitude. In this work, we studied through 2D FDTD simulations the behavior of a radar wave interacting with thin layers of different thicknesses. The snapshots and radargrams showed a large influence of the layer thickness on the wave propagation. For the very thin layers, the evanescent wave plays a major role and the plane wave approximation gives a good estimation of the reflection coefficient. For thicker layers, the specific inclination of each multiple reflection has to be taken into account, as well as the lateral wave propagation. On the basis of these observations, we determined which analytical method should be used for the analytical prediction of the reflection coefficient, as a function of the layer thickness. [less ▲]

Detailed reference viewed: 9 (0 ULg)
Full Text
Peer Reviewed
See detailFurther reduction in nonvertebral fracture rate is observed following 3 years of denosumab treatment: results with up to 7 years in the freedom extension
Ferrari, S; Adachi, JD; Lippuner, K et al

in Osteoporosis International (2014), 25(2), 56

Detailed reference viewed: 14 (1 ULg)
Full Text
Peer Reviewed
See detailDesign, modelling, performance optimization and experimentation of a reversible HP/ORC prototype.
Dumont, Olivier ULg; Quoilin, Sylvain ULg; Lemort, Vincent ULg

Conference (2014)

This paper presents an innovative system comprising a water/water heat pump connected to a solar roof and a geothermal heat exchanger. This unit is able to invert its cycle and operate as an Organic ... [more ▼]

This paper presents an innovative system comprising a water/water heat pump connected to a solar roof and a geothermal heat exchanger. This unit is able to invert its cycle and operate as an Organic Rankine Cycle. The solar roof is producing a large amount of heat throughout the year. This allows covering the building annual heating needs and furthermore, electricity is produced thanks to the surplus of heat in a so-called HP/ORC reversible unit. This paper is focusing on these three main points: modeling, design and experimentation of the prototype. This paper demonstrates the feasibility of such a prototype with encouraging performance in ORC and HP modes. First simulations of the HP/ORC system, with components optimally sized, indicate that, in ORC mode, for the weather conditions of Copenhagen, the electrical energy produced over one year reaches 4030 kWh and the nominal efficiency of the cycle is 7.6%. The nominal COP of the heat pump is 4.2 (condenser exhaust temperature of 60°C and evaporator supply temperature of 15°C). Experimentally, a COP of 4.21 (condensation temperature of 61°C and evaporation temperature of 21°C). is achieved in heat pump mode and a global ORC efficiency of 5.7% is obtained in ORC mode (condenser exhaust temperature of 25°C and evaporator supply temperature of 88°C). [less ▲]

Detailed reference viewed: 66 (6 ULg)
Full Text
Peer Reviewed
See detailBiochemical composition of cartilage with naturally occurring defects in the ovine femora-tibial joint
Matagne, A; Clegg, P; Tew, S et al

in Osteoporosis International (2014), 25(S2), 173

Detailed reference viewed: 11 (0 ULg)
Full Text
See detailObservational Asteroseismology of Hot Subdwarf Stars with the Mont4K/Kuiper Combination at the Steward Observatory Mount Bigelow Station
Fontaine, Gilles; Green, Elizabeth M.; Charpinet, Stéphane et al

in Astronomical Society of the Pacific Conference Series (2014), 481

In the last few years, we have carried out several extensive observational campaigns on pulsating hot subdwarf stars using the Mont4K CCD camera attached to the 1.55 m Kuiper Telescope on Mount Bigelow ... [more ▼]

In the last few years, we have carried out several extensive observational campaigns on pulsating hot subdwarf stars using the Mont4K CCD camera attached to the 1.55 m Kuiper Telescope on Mount Bigelow. The Mont4K is a joint partnership between the University of Arizona and Universite ́ de Montre ́al. It was designed and built at Steward Observatory. Using the Mont4K/Kuiper combination, we have so far, and among others, gathered high-sensitivity broadband light curves for PG 1219+534, PB8783, HS 0702+6043, and Feige 48. We report very briefly on some of the most interesting observational results that came out of these campaigns. [less ▲]

Detailed reference viewed: 33 (1 ULg)
Full Text
Peer Reviewed
See detailEvolution récente des extrêmes pluviométriques en Mauritanie (1933-2010)
Ozer, Pierre ULg; Hountondji, Yvon-Carmen; Gassani, Jean et al

in Camberlin, Pierre; Richard, Yves (Eds.) Actes du 27e Colloque International de l'Association Internationale de Climatologie (2014)

Un ensemble d’indicateurs a été compilé pour vérifier si la fréquence et/ou l’intensité des précipitations a significativement évolué au cours des dernières décennies dans la République Islamique de ... [more ▼]

Un ensemble d’indicateurs a été compilé pour vérifier si la fréquence et/ou l’intensité des précipitations a significativement évolué au cours des dernières décennies dans la République Islamique de Mauritanie. Cette étude s’appuie sur des indices nationaux basés les séries quotidiennes de précipitations de neuf stations synoptiques qui couvrent la période 1933-2010. L’analyse des précipitations a été réalisée en calculant annuellement treize indices pluviométriques : le total pluviométrique (PTOT), le nombre total de jours humides (précipitations ≥1 mm, JP), la lame d’eau moyenne précipitée par jour humide (Simple day intensity index, SDII), la pluviométrie maximale enregistrée sur 1 jour (Px1J), la fréquence des événements pluviométriques ≥ 10 mm (P10), ≥ 20 mm (P20), intenses (P95) et extrêmes (P99). Le poids relatif des cinq derniers indices dans le total pluviométrique annuel étant également apprécié. Les résultats montrent que les indices PTOT, JP, P10 et P20 présentent une tendance à la baisse significative sur la période 1933-2010. Dans le même temps, la fréquence des précipitations intenses et extrêmes évolue peu. De facto, la lame d’eau moyenne précipitée par jour humide (SDII) augmente de manière significative. Les résultats obtenus vont dans le sens des conclusions du Groupe d’expert intergouvernemental sur l’évolution du climat (Giec) à l’échelle globale, à savoir des précipitations extrêmes inchangées dans un contexte global de dessiccation. Selon de nombreux modèles, la dégradation pluviométrique pourrait s’amplifier dans les décennies à venir. Dès lors, des stratégies d’adaptation transfrontalières devraient être envisagées d’urgence car le processus de réchauffement de la planète n'est pas susceptible de diminuer dans les prochaines décennies. [less ▲]

Detailed reference viewed: 38 (7 ULg)
Full Text
Peer Reviewed
See detailEvolution over two years of functional and motor abilities among nursing home residents
Buckinx, Fanny ULg; Beaudart, Charlotte ULg; Slomian, Justine ULg et al

in Osteoporosis International (2014), 25(2), 121

Detailed reference viewed: 13 (3 ULg)
Full Text
Peer Reviewed
See detailA volatile sex pheromone in the invasive ladybeetle Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae)
Fassotte, Bérénice ULg; Fischer, Christophe ULg; Durieux, Delphine ULg et al

in Communications in Agricultural and Applied Biological Sciences (2014), 79(1), 79-81

Detailed reference viewed: 39 (12 ULg)
Full Text
Peer Reviewed
See detailPourquoi la théorie de la connaissance a besoin de la psychologie: les arguments de Stumpf
Dewalque, Arnaud ULg

in Gyemant, Maria (Ed.) Psychologie et psychologisme (2014)

Mon objectif est double. Il s’agira, d’une part, de retracer la position de Carl Stumpf face à la querelle du psychologisme (lectures psychologistes de Kant vs lectures antipsychologistes néokantiennes ... [more ▼]

Mon objectif est double. Il s’agira, d’une part, de retracer la position de Carl Stumpf face à la querelle du psychologisme (lectures psychologistes de Kant vs lectures antipsychologistes néokantiennes) et, d’autre part, d’en tirer quelques implications d’allure très générale concernant la place qu’il convient de réserver aux considérations psychologiques en philosophie. Je suggérerai: (1) que Stumpf adopte une voie médiane entre psychologisme et antipsychologisme, (2) que cette voie médiane est représentative de l'orientation philosophique de Brentano et de son école, (3) qu'elle débouche sur une conception fine des rapports entre philosophie (en particulier théorie de la connaissance) et psychologie: la théorie de la connaissance a besoin de la psychologie, sans être à proprement parler "fondée" sur elle. [less ▲]

Detailed reference viewed: 50 (5 ULg)
Full Text
Peer Reviewed
See detailChallenges for the development of bone forming agents in Europe: introduction
Kanis, JA; Rizzoli, R; Cooper, C et al

in Osteoporosis International (2014), 25(2), 66-67

Detailed reference viewed: 17 (3 ULg)
Peer Reviewed
See detailBelgian mud mounds, facies and structure and stromatoporoid fauna
Da Silva, Anne-Christine ULg; Kershaw, S.; Boulvain, Frédéric ULg et al

in Wesenberg Lauridsen, b.; Bjerager, M. (Eds.) Cold water carbonates at high paleolatitudes from the Palaeozoic to the Reent – combining outcrops studies with core studies and geophysical imaging. Programme and abstract book (2014)

Detailed reference viewed: 14 (8 ULg)
Full Text
See detailHow can long-term experimental plots can help us to understand the sustainability of different phosphorus inputs ?
Renneson, Malorie ULg; dufey, Joseph; Roisin, Christian et al

Poster (2014)

During the last twenty years, we observed a constant reduction of mineral fertilizer use, due to prices increase and environmental awareness, and an increase of crop removal, leading to a phosphorus (P ... [more ▼]

During the last twenty years, we observed a constant reduction of mineral fertilizer use, due to prices increase and environmental awareness, and an increase of crop removal, leading to a phosphorus (P) budget decrease. These changes are feared for a decrease of soil P content, which is already observed in some regions in Wallonia. However, P being an essential element for plant growth, is a such management compatible with yield maintaining? Are the current cropping systems sustainable? To answer to the questions, different studies are made. However, long-term data are rarely available to understand the influence of cropping systems on the soil behavior, leaching risks or to choose adequate indicators of P. To answer to these questions in our soils, 2 experimental plots of the Walloon Agricultural Research Center. These experimental plots were established in 1967 and 1959 in order to evaluate the effect of, respectively, 3 P and K input levels and different organic inputs on the production. Soils samples were taken in plots and analyzed in laboratory. So, different P indicators and edaphic parameters were determined. This study showed that all indicators are coherent with P levels and correlated with yields but no many differences can be shown between fertilizer types. Meanly, zero P-input engenders a decrease of yield of 7%, while a double input increases yield of 2% in comparison to plots with an input corresponding to crop export. So, financially, the zero P-input option is rarely profitable in the long-term and double input of P removed is never financially sustainable. Leaching into deeper soils levels was studied with analysis of deeper horizons which indicated any leaching , even in plots with double inputs. Indeed, soil P contents in depth were similar in these plots than those with no P-inputs or soils under forest cover. So, to conclude, these plots help to study the sustainability of cropping systems in real situations and to determine appropriate management of P. [less ▲]

Detailed reference viewed: 7 (0 ULg)
Full Text
See detailRéalisation d’un inventaire typologique et dendrochronologique des charpentes anciennes en région Bruxelles-Capitale
Weitz, Armelle ULg; Charruadas, Paulo ULg; Crémer, Sarah et al

in Chronique, Archaeologia Mediaevalis 37, Namur, 13-14 mars 2014 (2014)

Detailed reference viewed: 7 (0 ULg)
Full Text
Peer Reviewed
See detailMultiscale aspects in modeling percussive drilling: from wave propagation to rigid body dynamics
Depouhon, Alexandre ULg; Denoël, Vincent ULg; Detournay, Emmanuel

in Proceedings of the 3rd International Colloquium on Nonlinear Dynamics and Control of Deep Drilling Systems (2014)

Detailed reference viewed: 11 (0 ULg)
Peer Reviewed
See detailMathematical formulations of shallow water models with porosity for urban flood modeling
Bruwier, Martin ULg; Erpicum, Sébastien ULg; Archambeau, Pierre ULg et al

in ICHE 2014 : 11th International Conference on Hydroscience & Engineering (2014)

Detailed reference viewed: 16 (0 ULg)
Full Text
Peer Reviewed
See detailVitamine D et sujet âgé
Bruyère, Olivier ULg; Reginster, Jean-Yves ULg

in Gériatrie et Psychologie Neuropsychiatrie du Vieillissement (2014), 12(1), 5-6

Detailed reference viewed: 9 (3 ULg)
Peer Reviewed
See detailThe Horn of Africa, the Factors of a Unity. Wars, Cultures and Imperialisms (19-20th centuries)
Genin, Vincent ULg

in Literatures of the Horn of Africa (Ethiopia, Eritrea, Somalia, Djibouti) : Beyond the Language and the Territory (2014)

Detailed reference viewed: 81 (9 ULg)
Full Text
Peer Reviewed
See detailDIMENSIONNEMENT ET EXPÉRIMENTATION D’UNE UNITÉ POMPE À CHALEUR / ORC RÉVERSIBLE
Dumont, Olivier ULg; Quoilin, Sylvain ULg; Lemort, Vincent ULg

Conference (2014)

L’union européenne doit réduire les émissions de gaz à effet de serre de 80% par rapport au niveau des années 90 d’ici 2020. Les ménages représentent 27% de la consommation finale. Dans ce cadre, les ... [more ▼]

L’union européenne doit réduire les émissions de gaz à effet de serre de 80% par rapport au niveau des années 90 d’ici 2020. Les ménages représentent 27% de la consommation finale. Dans ce cadre, les bâtiments dont la consommation d’énergie est quasi nulle (NZEB – Nearly Zero Energy Building) sont d’une importance considérable. A partir de 2019, tous les nouveaux bâtiments devront présenter une production d’énergie renouvelable supérieure à la consommation d’énergie primaire. C’est dans ce cadre que le concept de PAC/ORC prend tout son sens. Ce système innovant comprend une pompe à chaleur eau/eau (PAC) reliée à un toit solaire et à un échangeur de chaleur géothermique. Cette pompe à chaleur est également capable d'inverser son cycle et de fonctionner comme un Cycle Organique de Rankine (ORC). En utilisant le toit solaire comme source de chaleur, une grande quantité de chaleur est générée tout au long de l'année. Cette chaleur est utilisée en priorité pour couvrir les besoins de chauffage annuels et le surplus de chaleur généré au cours de l'été est utilisée pour produire de l'électricité dans l’unité PAC / ORC. L’article s’articule en 4 parties. Tout d’abord, l’introduction présente les trois modes de fonctionnement. Ensuite, les modèles des composants et l’évaluation des performances au point nominal de conception sont décrits. Par après, le dimensionnement et le choix des composants sont réalisés sur bases de simulations annuelles avec un pas de temps d’une heure. Enfin, les premiers résultats expérimentaux sont présentés. Un rendement de 5,7% est atteint en mode ORC (avec une température de condensation de 25°C et une température d’évaporation de 88°C) alors qu’un COP de 4,2 est obtenu en mode pompe à chaleur (avec une température de condensation de 61°C et une température d’évaporation de 21°C). [less ▲]

Detailed reference viewed: 30 (4 ULg)
See detailA specific example of exchange: the national churches and their corresponding "nations"
Corswarem, Emilie ULg; Berti, Michela

Conference (2014)

Detailed reference viewed: 9 (0 ULg)
Full Text
Peer Reviewed
See detailLes TICE dans les approches interculturelles en classe de FLE/S : Leviers ou obstacles dans l’apprentissage de l’écrit ? Pratiques déclarées et représentations d’enseignants de FLE/S en contexte universitaire
Dezutter, Olivier; Bleys, Françoise; Eid, Rodine et al

in EID, Cynthia; FADEL, Fady (Eds.) Les interculturalités, État des lieux et perspectives, théories et pratiques (2014)

Detailed reference viewed: 56 (2 ULg)
Full Text
Peer Reviewed
See detailDemisso capite : Ablatif absolu ou épithète détachée ?
Longrée, Dominique ULg

in Lehmann, Christian; Concepcion, Cabrillana L. (Eds.) Acta XIV Colloquii Internationalis Linguisticae Latinae (2014)

Detailed reference viewed: 37 (4 ULg)
See detailWakefulness regulation: from light to cortical excitability
Vandewalle, Gilles ULg

Conference (2014)

Detailed reference viewed: 8 (0 ULg)
Full Text
See detailEstablishment of a murine graft-versus-myeloma model using allogeneic stem cell transplantation.
Binsfeld, Marilène ULg; BEGUIN, Yves ULg; Belle, Ludovic et al

in Belgian Journal of Hematology (2014)

Detailed reference viewed: 3 (0 ULg)
Full Text
Peer Reviewed
See detailA LARGE STRAIN ELASTO-VISCOPLASTIC NUMERICAL MODEL
Careglio, Claudio; Canales Cardenas, Cristian ULg; Ribero, Melisa et al

in Bustamante, Roger (Ed.) Proceedings of PACAM XIV (2014)

A large strain elasto-viscoplastic Perzyna model was proposed by Ponthot. The resultant numerical model computes the elastic response using an hypoelastic model. A viscoplastic multiplier was proposed ... [more ▼]

A large strain elasto-viscoplastic Perzyna model was proposed by Ponthot. The resultant numerical model computes the elastic response using an hypoelastic model. A viscoplastic multiplier was proposed, then both inviscid (elastoplastic) and elastic limiting cases can be easily recovered. More recently the authors have included this viscoplastic model in a large strain constitutive model based on hyperelasticity and multiplicative decomposition of deformation gradient tensor. In this work a brief summary of both, hypoelastic and hyperelastic based large strain models of viscoplasticity is provided. Large strain examples are simulated in order to test the discussed models. Different parameters of the constitutive model are tested in order to study the sensitivity of the resultant algorithm. From the obtained results can be said that both models show a very good agree and represent very well the characteristic of the viscoplastic constitutive model. [less ▲]

Detailed reference viewed: 12 (3 ULg)
Peer Reviewed
See detailShould I Access or Should I Own? Perceived Risks as Barriers to Access-Based Consumption
Hazee, Simon ULg; Delcourt, Cécile ULg; Van Vaerenbergh, Yves

Conference (2014)

Detailed reference viewed: 12 (0 ULg)
Full Text
Peer Reviewed
See detailA quantitative analysis of the effect of flexible loads on reserve markets
Mathieu, Sébastien ULg; Louveaux, Quentin ULg; Ernst, Damien ULg et al

in Proceedings of the 18th Power Systems Computation Conference (PSCC) (2014)

We propose and analyze a day-ahead reserve market model that handles bids from flexible loads. This pool market model takes into account the fact that a load modulation in one direction must usually be ... [more ▼]

We propose and analyze a day-ahead reserve market model that handles bids from flexible loads. This pool market model takes into account the fact that a load modulation in one direction must usually be compensated later by a modulation of the same magnitude in the opposite direction. Our analysis takes into account the gaming possibilities of producers and retailers, controlling load flexibility, in the day-ahead energy and reserve markets, and in imbalance settlement. This analysis is carried out by an agent-based approach where, for every round, each actor uses linear programs to maximize its profit according to forecasts of the prices. The procurement of a reserve is assumed to be determined, for each period, as a fixed percentage of the total consumption cleared in the energy market for the same period. The results show that the provision of reserves by flexible loads has a negligible impact on the energy market prices but markedly decreases the cost of reserve procurement. However, as the rate of flexible loads increases, the system operator has to rely more and more on non-contracted reserves, which may cancel out the benefits made in the procurement of reserves. [less ▲]

Detailed reference viewed: 13 (1 ULg)
Full Text
Peer Reviewed
See detailPrevalence of vitamin D inadequacy in european women aged over 80 years
Bruyère, Olivier ULg; Slomian, Justine ULg; Beaudart, Charlotte ULg et al

in Osteoporosis International (2014), 25(2), 196

Detailed reference viewed: 13 (2 ULg)
Full Text
See detailMultiple myeloma cells instruct myeloid-derived suppressor cells to release pro-angiogenic cytokines
Binsfeld, Marilène ULg; Heusschen, Roy ULg; Lamour, Virginie et al

in Belgian Journal of Hematology (2014)

Detailed reference viewed: 12 (2 ULg)
Full Text
Peer Reviewed
See detailMicrostructures and Mechanical Properties of Stainless Steel AISI 316L Processed by Selective Laser Melting
Mertens, Anne ULg; Reginster, Sylvie ULg; Contrepois, Quentin et al

in Materials Science Forum (2014), 783-786 (2014)

In this study, samples of stainless steel AISI 316L have been processed by selective laser melting, a layer-by-layer near-net-shape process allowing for an economic production of complex parts. The ... [more ▼]

In this study, samples of stainless steel AISI 316L have been processed by selective laser melting, a layer-by-layer near-net-shape process allowing for an economic production of complex parts. The resulting microstructures have been characterised in details in order to reach a better understanding of the solidification and consolidation processes. The influence of the processing parameters on the mechanical properties was investigated by means of uniaxial tensile testing performed on samples produced with different main orientations with respect to the building direction. A strong anisotropy of the mechanical behaviour was thus interpreted in relation with the microstructures and the processing conditions. [less ▲]

Detailed reference viewed: 11 (6 ULg)
Full Text
Peer Reviewed
See detailStrontium ranelate decreases the number of rapid radiological progressors from the first year in SEKOIA study
Chevalier, X; Richette, P; Bruyère, Olivier ULg et al

in Osteoarthritis and Cartilage (2014), 22(1), 461

Detailed reference viewed: 10 (2 ULg)
Peer Reviewed
See detailMetabolic cerebral correlates of conjunctive and relational memory in Alzheimer's disease
Bastin, Christine ULg; Bahri, Mohamed Ali ULg; Collette, Fabienne ULg et al

Poster (2014)

Introduction. Memory deficits are the clinical hallmark of typical Alzheimer’s disease. The precise nature of these deficits however remains to be fully characterized. In this study, we investigated ... [more ▼]

Introduction. Memory deficits are the clinical hallmark of typical Alzheimer’s disease. The precise nature of these deficits however remains to be fully characterized. In this study, we investigated binding in long-term episodic memory. Relational binding processes in memory create an associative link between independent items or between items and context into episodic memories (Cohen et al., 1999). An alternative process, conjunctive binding, allows associations to be encoded as a united representation of features into a single entity (O'Reilly and Rudy, 2001; Mayes et al., 2007). The current study (1) assessed whether Alzheimer’s disease disrupt both conjunctive and relational memory, and (2) related patients’ memory performance to cerebral metabolism. Methods. Thirty patients with mild Alzheimer’s disease and 24 healthy older adults performed a source memory task where items were associated to a background color (Diana et al., 2008, 2010). In one condition, relational binding was promoted by the instruction to associate the item with another object of the same color as the background. In the other condition, color had to be integrated as an item feature (conjunctive binding). Patients’ brain metabolic activity at rest (FDG-PET) was analysed with spatio-temporal Partial Least Squares (McIntosh et al., 1996) in order to assess the relation of behavioral performance and activity in functional cerebral networks. Results. Alzheimer’s disease patients had an impaired capacity to remember item-color associations, with deficits in both relational and conjunctive memory. However, performance in the two kinds of associative memory varied independently across patients. Partial least square analyses revealed a significant pattern of metabolic activity that correlated specifically with each condition (accounting for 76.48 % of the covariance in the data; p< .05). More specifically, poor conjunctive memory was related to hypometabolism in an anterior temporal-posterior fusiform brain network, whereas relational memory correlated with metabolism in regions of the default mode network. Conclusions. These findings support the hypothesis of distinct neural systems specialized in different types of associative memory and point to heterogeneous profiles of memory alteration in Alzheimer’s disease as a function of damage to the respective neural networks. [less ▲]

Detailed reference viewed: 11 (4 ULg)
Full Text
Peer Reviewed
See detailCaractéristiques du capital foncier des exploitations agricoles dans le sud de la Belgique
Terrones Gavira, François ULg; Burny, Philippe ULg; Lebailly, Philippe ULg

Conference (2014)

En Wallonie, région située au Sud de la Belgique, les capitaux mobilisés pour l’activité agricole sont nombreux, variés mais surtout importants. Parmi les capitaux engagés, le capital foncier est l’une ... [more ▼]

En Wallonie, région située au Sud de la Belgique, les capitaux mobilisés pour l’activité agricole sont nombreux, variés mais surtout importants. Parmi les capitaux engagés, le capital foncier est l’une des composantes importantes du patrimoine de l’exploitation agricole. Ce dernier influence directement les décisions qui sont prises à long terme en son sein à savoir, sa politique d’investissement mais également les éléments relatifs à son cycle d’exploitation et à sa trésorerie. La problématique foncière ne doit donc pas être analysée de manière cloisonnée mais doit rester intégrée à la question centrale du financement des exploitations agricoles de manière générale et de la reprise des activités en particulier. Le présent article a pour but de caractériser le capital foncier en Wallonie. Après un descriptif succinct de l’agriculture wallonne, l’importance des capitaux mobilisés pour l’activité agricole en Wallonie par les principaux acteurs du monde agricole est décrite par le biais d’une approche micro-économique basée sur les données du réseau comptable organisé et géré par la Direction de l’Analyse Economique Agricole (DAEA). La deuxième partie, quant à elle, discute de la capitalisation des aides issues de la politique agricole commune (PAC) actuelle mais également future dans le foncier en Wallonie. L’approche est de type théorique et utilise les données de la littérature mais également celles du Système Intégré de Gestion et de Contrôle (SIGEC) de la Direction générale de l’Agriculture, des Ressources naturelles et de l’Environnement (DGARNE) du Service public de Wallonie (SPW), qui a en charge l’octroi des aides à l’agriculture. Enfin, la dernière partie du présent document décrit les difficultés propres aux jeunes agriculteurs et aux nouveaux entrants pour accéder au foncier en Wallonie. [less ▲]

Detailed reference viewed: 9 (1 ULg)
Full Text
Peer Reviewed
See detailÉtalement urbain et vulnérabilité croissante face au risque d’inondation : l’exemple de Nouakchott (Mauritanie)
Ozer, Pierre ULg; Ould Sidi Cheikh, Mohamed Ahmed; Ozer, André ULg

in Ozer, André; Ozer, Pierre (Eds.) Colloque International "La Géographie Physique et les Risques Naturels" - Livre de résumés (2014)

Après la sécheresse et la désertification qui ont fortement frappé la Mauritanie dans les années 1970 et 1980, la ville de Nouakchott a connu un développement démographique spectaculaire. En effet, la ... [more ▼]

Après la sécheresse et la désertification qui ont fortement frappé la Mauritanie dans les années 1970 et 1980, la ville de Nouakchott a connu un développement démographique spectaculaire. En effet, la population de la capitale mauritanienne est passée de 134 704 habitants en 1977 à 899 887 habitants recensés en mars 2013. Depuis 2000, Nouakchott voit sa population augmenter de 125 personnes par semaine ; une croissance absolue jamais atteinte par le passé. La ville s'est donc agrandie considérablement et les nouveaux arrivants ont construit leurs maisons dans des zones marginales sans aménagement préalable. Plusieurs quartiers se sont installés soit dans des zones dépressionnaires à sols salés sous forme de sebkha, soit dans des zones dunaires fortement ensablées. [less ▲]

Detailed reference viewed: 7 (1 ULg)
Full Text
See detailA stochastic framework for subspace identification of a strongly nonlinear aerospace structure
Noël, Jean-Philippe ULg; Schoukens, Johan; Kerschen, Gaëtan ULg

in Proceedings of the International Modal Analysis Conference (IMAC) XXXII (2014)

The present study exploits the maximum likelihood identification framework for deriving statistically-optimal models of nonlinear mechanical systems. The identification problem is formulated in the ... [more ▼]

The present study exploits the maximum likelihood identification framework for deriving statistically-optimal models of nonlinear mechanical systems. The identification problem is formulated in the frequency domain, and model parameters are calculated by minimising a weighted least-squares cost function. Initial values of the model parameters are obtained by means of a nonlinear subspace algorithm. The complete identification methodology is first demonstrated on a Duffing oscillator, prior to being applied to a full-scale aerospace structure. [less ▲]

Detailed reference viewed: 27 (6 ULg)
Full Text
Peer Reviewed
See detailDurability of hydrophobic treatments on concrete monuments
Courard, Luc ULg; Lucquiaud, Vincent ULg; Gérard, Olivier et al

in Proceedings of 7th International Conference on Water Repellent Treatment and Protective Surface Technology for Building Materials (2014)

The protection of concrete historical structures is a challenge for the coming years. Hydrophobic treatment may induce a delay in degradations progress as well as a protection against water penetration ... [more ▼]

The protection of concrete historical structures is a challenge for the coming years. Hydrophobic treatment may induce a delay in degradations progress as well as a protection against water penetration. Existing products - mainly silane and siloxane based – have been submitted to different ageing processes including UV radiation, moistening cycles, thermal shocks, freeze-thaw cycles, carbonation and efficiency has been evaluated on the base of contact angle, vapour and chloride permeability and, capillarity absorption. Investigation results clearly show a good behaviour of hydrophobic treatments under main ageing conditions. [less ▲]

Detailed reference viewed: 17 (3 ULg)
Full Text
Peer Reviewed
See detailEfficient estimation of the high-order response statistics of a wind-excited oscillator with nonlinear velocity feedback
Denoël, Vincent ULg; Carassale, Luigi

in Proceedings of the XIII Conference of the Italian Association for Wind engineering (2014)

Detailed reference viewed: 10 (1 ULg)
Peer Reviewed
See detailEtat du droit belge avant la tempête Salduz
Jacobs, Ann ULg

in Jacobs, Ann; Fourment, Françoios (Eds.) La garde à vue. Regards croisés belges, français et européens (2014)

Etat de la législation belge en ce qui concerne l'assistance de l'avocat lors des premiers interrogatoires avant la jurisprudence et la la loi Salduz.

Detailed reference viewed: 8 (0 ULg)
Full Text
Peer Reviewed
See detailFace à la globalisation : de l’interculturalité implicite à l’interculturalité engagée
Defays, Jean-Marc ULg

in EID, Cynthia; FADEL, Fady (Eds.) Interculturalité : Etat des lieux et perspectives, théories et pratiques (2014)

Detailed reference viewed: 48 (10 ULg)
Full Text
Peer Reviewed
See detailEvaluation of the mechanical integrity of a concrete surface by means of combined destructive methods
Courard, Luc ULg; Bissonnette, Benoît; Garbacz, Andrzej et al

in Grantham, Michael (Ed.) Proceedings of the 5th International Conference on Concrete Repair (2014)

As a tight bond between the repair and the old concrete is required, the soundness of the prepared surface has to be carefully assessed. This paper presents the results of an investigation intended to ... [more ▼]

As a tight bond between the repair and the old concrete is required, the soundness of the prepared surface has to be carefully assessed. This paper presents the results of an investigation intended to assess and compare quantitatively different test methods, namely the Schmidt rebound hammer, the pull-out test and the pull-off test, to evaluate superficial mechanical integrity of a substrate after concrete removal operations. Although it does not yield a precise evaluation of compressive strength, the Schmidt rebound hammer test is recognized as a useful tool for performing quick surveys to assess concrete uniformity. The pull-off test is very well correlated with the splitting-tensile test, but it is not suited for vertical and overhead surfaces. The Capo pull-out test has limited interest for surface preparation, as it is applicable to flat surfaces only. Conversely, the accelerated pull-out test showed interesting potential as a simple and relatively rapid means for assessing the mechanical integrity of a concrete surface prior to repair for any type of concrete surface. It appears from the results generated in this study that the combination Schmidt hammer / pull-off test could fill the needs for the evaluation of horizontal surfaces after concrete removal, while the combination Schmidt hammer / accelerated pull-out test could be used effectively on vertical and overhead surfaces. [less ▲]

Detailed reference viewed: 23 (0 ULg)
Full Text
Peer Reviewed
See detailImpact of components of the metabolic syndrome on progression of knee osteoarthritis in the SEKOIA study
Edwards, MH; Parsons, C; Eymard, F et al

in Rheumatology (2014), 53(1), 31

Detailed reference viewed: 8 (2 ULg)
Full Text
Peer Reviewed
See detailComment Descartes et Leibniz (disent qu'ils) lisent les philosophes
Bouquiaux, Laurence ULg

in Les arts de lire des philosophes. Théorie et pratique de la lecture des textes chez les philosophes de l’âge classique (2014)

Detailed reference viewed: 11 (2 ULg)
Full Text
Peer Reviewed
See detailExploration of unitization processes in episodic memory in Alzheimer's disease
Delhaye, Emma ULg; Salmon, Eric ULg; Bastin, Christine ULg

in Frontiers in Human Neuroscience (2014)

Detailed reference viewed: 13 (1 ULg)
Full Text
See detailModeling the hot subdwarf PB 8783 by asteroseismology
Van Grootel, Valérie ULg; Charpinet, Stephane; Fontaine, Gilles et al

in Astronomical Society of the Pacific Conference Series (2014), 481

We present the preliminary seismic modeling of one of the hottest and most compact subdwarf pulsators, PB 8783 (EO Ceti). This is a well observed hot subdwarf star, including a 78 d campaign in white ... [more ▼]

We present the preliminary seismic modeling of one of the hottest and most compact subdwarf pulsators, PB 8783 (EO Ceti). This is a well observed hot subdwarf star, including a 78 d campaign in white light photometry that we carried out at Mount Bigelow, Arizona, during the fall 2007. PB 8783 has also been observed at length in spectroscopy, revealing a spectrum highly contaminated by a main sequence companion. It is extremely difficult to disentangle the contribution of the two components and, as a consequence of this, the exact nature of the hot subdwarf (sdB or sdO star) is undetermined. We propose here to test the two hypotheses by asteroseismology. Although the sdB possibility cannot be excluded, the pulsation modes observed in PB 8783 are much better accommodated in the case of an sdO star. [less ▲]

Detailed reference viewed: 11 (0 ULg)
Full Text
Peer Reviewed
See detailQuels facteurs sociodémographiques influencent l'attitude des médecins généralistes envers la prévention ?
Vanmeerbeek, Marc ULg; Donneau, Anne-Françoise ULg; Monseur, Christian ULg

in Revue Médicale de Bruxelles (2014), 35(3 (Suppl)), 6

Objectifs En Belgique, les mesures de prévention médicalisées restent inéquitablement distribuées dans plusieurs domaines (vaccins, dépistages, conseil cardio-vasculaire, etc.). Une recherche antérieure ... [more ▼]

Objectifs En Belgique, les mesures de prévention médicalisées restent inéquitablement distribuées dans plusieurs domaines (vaccins, dépistages, conseil cardio-vasculaire, etc.). Une recherche antérieure au moyen d’une échelle d’attitude a mis en évidence trois facteurs pouvant modeler l’attitude des médecins généralistes (MG) envers la prévention : 1. Evaluation de pratique. 2. Sentiment de responsabilité envers la santé des patients. 3. Compétences professionnelles particulières (CPP) : références scientifiques, positionnement dans le système de soins, délégation de tâches à des paramédicaux. Cette étude a cherché à établir des profils de MG par rapport à la prévention, en croisant les scores sur ces trois facteurs et les variables sociodémographiques. Méthode Les réponses des 457 MG répondants à l’échelle d’attitude ont été soumis à des analyses multivariées, en prenant comme variables dépendantes les scores obtenus sur les trois facteurs, et comme variables indépendantes l’ancienneté, le sexe, la langue, le lieu de pratique, le travail dans un centre de prévention (ONE, planning, PSE), le type de pratique (solo ou divers types d’association). Résultats Le type de pratique est le seul déterminant qui influence les 3 facteurs, avec un gradient des pratiques solo vers les maisons médicales, en passant par les associations mono- puis pluridisciplinaires. Les MG ayant moins de 20 ans de pratique ont de meilleurs scores en évaluation et CPP. Les hommes ont de meilleurs scores en évaluation, et les pratiques urbaines se distinguent en CPP. La langue influence tantôt dans un sens tantôt dans l’autre. Il n’y a pas d’influence du fait de travailler dans un centre de prévention. Conclusion Une diffusion plus large et équitable des actes préventifs passe par la prise en compte de facteurs personnels et organisationnels propres aux MG. Les associations pluridisciplinaires semblent mieux préparées pour atteindre cet objectif. [less ▲]

Detailed reference viewed: 5 (1 ULg)
Full Text
Peer Reviewed
See detailPrevalence of sarcopenia according to different diagnostic tools
Beaudart, Charlotte ULg; Buckinx, Fanny ULg; Slomian, Justine ULg et al

in Osteoporosis International (2014), 25(2), 115

Detailed reference viewed: 18 (3 ULg)
Peer Reviewed
See detailDoes the facultative bacteria Serratia symbiotica influence the foraging strategies of aphid parasitoids?
Attia, Sabrine; Louâpre, Philippe; Foray, Vincent et al

Poster (2014)

Detailed reference viewed: 24 (1 ULg)
Full Text
See detailThe Mass Distribution of sdB Stars Derived by Asteroseismology and Other Means: Implications for Stellar Evolution Theory
Van Grootel, Valérie ULg; Charpinet, Stéphane; Fontaine, Gilles et al

in Astronomical Society of the Pacific Conference Series (2014), 481

Understanding the formation of sdB stars is one of the remaining challenges of stellar evolution theory. Competing scenarios have been proposed to account for the existence of such evolved objects. They ... [more ▼]

Understanding the formation of sdB stars is one of the remaining challenges of stellar evolution theory. Competing scenarios have been proposed to account for the existence of such evolved objects. They give quite different mass distributions for resulting sdB stars. Detailed asteroseismic analyses, including mass estimates, of 15 pulsating hot B subdwarfs have been published in the past decade. Masses have also been reliably determined by light curve modeling and spectroscopy for 7 sdB components of eclipsing or reflection binaries. We present here the empirical mass distribution of sdB stars on the basis of these samples. Implications are also briefly discussed. [less ▲]

Detailed reference viewed: 12 (0 ULg)
Full Text
See detailDesigning and testing an air-PCM heat exchanger for building ventilation application coupled to energy storage
Dechesne, Bertrand ULg; Gendebien, Samuel ULg; Martens, Jonathan et al

in 2014 Purdue Conferences Proceedings (2014)

This paper studies a PCM heat exchanger coupled to a building ventilation system. This PCM module can either store heat during the day (e.g. by cooling solar PV panels) and restore it to the building ... [more ▼]

This paper studies a PCM heat exchanger coupled to a building ventilation system. This PCM module can either store heat during the day (e.g. by cooling solar PV panels) and restore it to the building during the night for space heating purposes or store coolness during the night and give it back during the day and thus act as a free cooling system. This project aims to develop a performing air-PCM heat exchanger providing latent energy storage of 0.5 kWh, this energy is delivered between 15 and 30°C. This heat exchanger is based on corrugated cells that can be easily filled, lined up and then locked in a box, letting the air pass between the cells. The PCM used for the prototype is c omposed of fatty acids. In order to develop an efficient PCM ventilation module, two different ways of investigation were followed and used in parallel. The first one used CFD simulations and the second one, a semi-empirical model based on correlations. The CFD simulations were able to predict the convection coefficient on the air side and also show the flow repartition between the different channels whereas the semi-empirical model allowed a parametrical study in order to identify the best geometry possible. Once the heat exchanger geometry was optimized, a test bench was built and a prototype of air-PCM heat exchanger was manufactured in order to measure its thermal and hydraulic performances. The tests consist in either a complete solidification or liquefaction of the PCM starting from respectively liquid PCM at 30°C or solid PCM at 15°C. The airflow rate was set to 45m³/h, which corresponds barely to the ventilation rate of a traditional room in a residential building. A comparison between the models and the measurements was carried out in order to calibrate the semi-empirical model. It will be shown that a simple semi-empirical model satisfactorily predicts the evolution of heat transfer rate for different operating conditions. [less ▲]

Detailed reference viewed: 21 (4 ULg)
Full Text
Peer Reviewed
See detailHemolytic crisis induced by rasburicase administration revealing G-6-PD deficiency.
SID, Sélim ULg; Dugauquier, D.; DE PRIJCK, Bernard ULg et al

in Belgian Journal of Hematology (2014)

Detailed reference viewed: 18 (1 ULg)
See detailRestoring order: Inheritance disputes and shifting legal consciousness in Cotonou
Andreetta, Sophie ULg

Conference (2014)

For the purpose of this paper, I will focus on the litigants’ discourses on the law and the State in inheritance cases in Cotonou. As a matter of fact, over the last few years, the number of inheritance ... [more ▼]

For the purpose of this paper, I will focus on the litigants’ discourses on the law and the State in inheritance cases in Cotonou. As a matter of fact, over the last few years, the number of inheritance disputes handled by the Beninese state courts has drastically increased. In Cotonou, State of Persons courtrooms (Chambres Etat des Personnes) – competent with regards to family matters – are so crowded that people even have to queue outside during registration. Litigants often mention that they “referred to the state” in order to “restore order” within their families. The question is: does the legal system actually manage to meet their expectations? In order to answer that question, I will focus on the legal consciousness of Beninese families and how this shifts throughout the litigation process. How do people understand and utilize state law in inheritance cases? Why do they go to court, and what do they expect from the judiciary? How does their understanding and perception of law adjust as they experience state courts? Finally, how do the aftermath of legal proceedings and the implementation process amend their legal consciousness? Within that framework, Beninese plaintiffs often go from trusting that the state would “restore order” into their family to believing that the judiciary somehow made things even worse. While scholars have investigated how race , gender, or social status influence “the ways people understand and use the law” (Merry, 1990:5), there is however little reflection on the way legal consciousness develops throughout the litigation process. There is also a point to be made about the relationship between the law and the state. In Benin, people “refer to the State” when bringing a case to court and, through the judge, “the State” is the one solving their problems. Within that context, the way people think about and experience legal proceedings in Cotonou is as much about legal consciousness as it is about state consciousness. It is about the legitimacy and efficacy of the state in delivering public service; about governance and power. [less ▲]

Detailed reference viewed: 10 (0 ULg)
Full Text
See detailLes multiplexes en allergie
GADISSEUR, Romy ULg

Conference (2014)

Detailed reference viewed: 20 (2 ULg)
Full Text
Peer Reviewed
See detailImpact of bone marrow lesion on the progression of knee osteoarthritis in the SEKOIA study
Parsons, C; Edwards, MH; Bruyère, Olivier ULg et al

in Rheumatology (2014), 53(1), 130

Detailed reference viewed: 7 (2 ULg)
Full Text
Peer Reviewed
See detailFirst palynological record of the Silurian/Devonian boundary in the San Juan Precordillera, Argentina
Garcia Muro, V.J.; Rubinstein, C.V.; Steemans, Philippe ULg

Conference (2014)

Detailed reference viewed: 7 (0 ULg)
Full Text
Peer Reviewed
See detailLe corps du Prince. La perception de l'Egypte ancienne
Winand, Jean ULg

in Marchandisse, Alain (Ed.) Le corps du Prince (2014)

Detailed reference viewed: 43 (1 ULg)
Full Text
Peer Reviewed
See detailDu texte littéraire au document : les connexions entre les papyrus littéraires et documentaires grecs et latins
Marganne, Marie-Hélène ULg

in Derda, Tomasz; Urbanik, Jakub (Eds.) Actes du XXVIIe Congrès International de papyrologie (Varsovie, 29.07-03.08.2013) (2014)

Si l'on distingue généralement les papyrus littéraires et les papyrus documentaires grecs et latins, ces deux catégories présentent cependant, à côté du support, de l'écriture et des scribes, d'autres ... [more ▼]

Si l'on distingue généralement les papyrus littéraires et les papyrus documentaires grecs et latins, ces deux catégories présentent cependant, à côté du support, de l'écriture et des scribes, d'autres caractéristiques communes : certains papyrus paralittéraires présentent des traits documentaires ; d'autres papyrus sont trop fragmentaires pour être sûrement identifiés, soit comme littéraires, soit comme documentaires ; certains écrits comme les lettres et les discours peuvent, soit être liés à une profession ou à une circonstance particulière (documents), soit être fictifs (littéraires) ; des papyrus documentaires contiennent des citations ou des réminiscences littéraires ; des papyrus littéraires présentent un document sur l'autre face ; des papyrus littéraires font partie d'archives documentaires . Appliquant aux textes documentaires ou indéterminés la même grille d'analyse qu'aux textes littéraires, la nouvelle base de données du CEDOPAL permet de rendre compte de ces connexions et de les exploiter en vue de mieux évaluer les écrits concernés, les méthodes scribales mises en œuvre, ainsi que leur contexte de production et d'utilisation. [less ▲]

Detailed reference viewed: 23 (9 ULg)
Full Text
Peer Reviewed
See detailPatch repair: compatibility issues
Garbacz, Andrzej; Courard, Luc ULg; Bissonnette, Benoît et al

in Grantham, Michael (Ed.) Proceedings of the 5th International Conference on Concrete Repair (2014)

Repair of any concrete structure results in formation of complex, at least two-component repair systems. Compatibility approach is treated as a basic requirement during selection of repair material ... [more ▼]

Repair of any concrete structure results in formation of complex, at least two-component repair systems. Compatibility approach is treated as a basic requirement during selection of repair material. Recently, the understanding for compatibility requirements in repair systems approach is demonstrated in many papers. The aim of this paper is analyzing the compatibility between repair materials and concrete substrate in the case of patch repair. The compatibility issues were discussed in light of the various requirements which determine the mathematical space of loads, including chemical, mechanical and other physical (mainly thermal) loads. N-dimensional compatibility space is created, taking into account selected patch material control parameters. The requirements for good compatibility between repair material and concrete substrate can be formulated by using mathematical inequalities, where the variables are the material control parameters. The effects of properties of the both repair material and concrete substrate were analyzed using computer system ANCOMP developed at Warsaw University of Technology. Usability of this approach was demonstrated using selected case study as an example. [less ▲]

Detailed reference viewed: 9 (0 ULg)
Full Text
Peer Reviewed
See detailBi-stable flow fields and two-way couplings between flow and sedimentation in shallow reservoirs
Dewals, Benjamin ULg; Peltier, Yann ULg; Pirotton, Michel ULg et al

in 3rd IAHR Europe Congress, Book of Proceedings, Porto, Portugal, 14-16 April 2014 (2014)

Shallow reservoirs are structures commonly used in civil and environmental engineering. Recent experimental and numerical research has focused on the velocity fields and sediment deposits in rectangular ... [more ▼]

Shallow reservoirs are structures commonly used in civil and environmental engineering. Recent experimental and numerical research has focused on the velocity fields and sediment deposits in rectangular shallow reservoirs. These analyses highlighted the existence of fascinating complex flow fields and sedimentation patterns, involving bi-stable flow fields and significant two-way couplings between flow and sedimentation in such reservoirs. We review here the findings of the latest research and present on-going developments. [less ▲]

Detailed reference viewed: 20 (6 ULg)
See detail"Synthèse des travaux"
Delruelle, Edouard ULg

Conference (2014)

Detailed reference viewed: 2 (0 ULg)
Peer Reviewed
See detailComment appréhender la complexité inhérente aux compétences ?
Georges, François ULg; Tardif, Jacques; Poumay, Marianne ULg

Conference (2014)

La compétence est complexe. À l’instar d’un cube qui ne donne accès simultanément qu’à trois de ses faces, la compétence ne laisse transparaître que certaines combinaisons de ressources. Afin d’examiner ... [more ▼]

La compétence est complexe. À l’instar d’un cube qui ne donne accès simultanément qu’à trois de ses faces, la compétence ne laisse transparaître que certaines combinaisons de ressources. Afin d’examiner les autres ressources combinées, il convient de changer de point de vue. Dans cette présentation, nous proposons une typologie des portes d’entrée utilisées par les apprenants pour rendre compte de leurs compétences. De cette analyse, nous suggérons des angles de vue qui guident l’apprenant dans le choix de portes d’entrée complémentaires de sorte que les points de vue variés assurent la prise en compte de la compétence dans toute sa complexité. Sur base de cette démarche exploratoire, nous proposons des pistes pour porter un jugement valide sur le développement des compétences. [less ▲]

Detailed reference viewed: 27 (1 ULg)
See detailTransgenerational and long-term effects induced by reduced protein availability by albumen removal during embryonic development in laying hens
Willems, E.; Koppenol, A.; Franssens, L. et al

Conference (2014)

Detailed reference viewed: 7 (0 ULg)
Peer Reviewed
See detailLearning dextrous grasps that generalise to novel objects by combining hand and contact models
Kopicki, Marek; Detry, Renaud ULg; Schmidt, Florian et al

in IEEE International Conference on Robotics and Automation (2014)

Detailed reference viewed: 12 (0 ULg)
Full Text
Peer Reviewed
See detailDistinction by micro-Raman spectroscopy and chemometrical analysis of copper phthalocyanine blue polymorphs in oil-based and acrylic samples
Defeyt, Catherine ULg; Van Pevenage, Jolien; Learner, Tom et al

in Van den berg, K.J.; Burnstock, A.; de Tagle, A. (Eds.) et al Issues in Contemporary Oil Paints (2014)

Copper phthalocyanine (CuPc) blue, commonly named phthalo blue is the most important synthetic organic blue pigment in the 20th and 21st century artists paints. Phthalo blue, which is adopted by artists ... [more ▼]

Copper phthalocyanine (CuPc) blue, commonly named phthalo blue is the most important synthetic organic blue pigment in the 20th and 21st century artists paints. Phthalo blue, which is adopted by artists since 1936, is a polymorphous pigment. Currently, the alpha, beta and epsilon CuPc polymorphs are used in artists paint formulations. The identification of the CuPc crystal form provides technical and chronological information relevant for studying artworks. Raman Spectroscopy (RS) is a very valuable technique for the detection of phthalo blue in paint layers. However, the spectral interpretation is not straightforward concerning the CuPc polymorph distinction. To overcome the problem we have previously developed a procedure combining RS and chemometrical analysis. The experimental results that we obtained have demonstrated its efficiency for predicting the CuPc crystal form in unknown paint samples. In the present work, this procedure was applied on oil-based and acrylic paints from Sam Francis’ studio and the Getty Conservation Institute (GCI) Reference Collection. [less ▲]

Detailed reference viewed: 35 (3 ULg)
Full Text
Peer Reviewed
See detailImpacts des récentes variations pluviométriques sur le droit du sol, l’accès a l’eau et l’agriculture en Mauritanie : l’exemple du lac de Mâle
Gassani, Jean; De Longueville, Florence ULg; Gemenne, François ULg et al

in Camberlin, Pierre; Richard, Yves (Eds.) Actes du 27e Colloque International de l'Association Internationale de Climatologie (2014)

The Islamic Republic of Mauritania is at a socio-political crossroads in its history. Environmental crises coupled with the transformation of economic activities and population pressures disrupt social ... [more ▼]

The Islamic Republic of Mauritania is at a socio-political crossroads in its history. Environmental crises coupled with the transformation of economic activities and population pressures disrupt social structures of the country. The drought that began in 1970 has transformed the nomadic lifestyle, forcing them to settle. This deeply changed tribes’ perception access to land and water resources, and has led to increased pressure on the Haratines (former black slaves) in agricultural production. With the release of human rights, the enactment of a land law, and taking into account the Sharia, former slaves claimed their ownership of the land they cultivated. The refusal of the latter to access their application, the Haratines headed for land undeveloped and interfered in the customary practice of the management of water catchments. The latent conflict escalated into open in the watershed of Lake Mâle. Today, the situation does not improve since the political will collides with local tribal authorities. [less ▲]

Detailed reference viewed: 35 (6 ULg)
Full Text
Peer Reviewed
See detailFacteurs de risque de chute chez des sujets résidant en maison de repos : étude prospective d'une durée de 2 ans
Buckinx, Fanny ULg; Beaudart, Charlotte ULg; Slomian, Justine ULg et al

in Gériatrie et Psychologie Neuropsychiatrie du Vieillissement (2014), 12(1), 164-165

Detailed reference viewed: 21 (8 ULg)
Full Text
Peer Reviewed
See detailConcrete repair bond: evaluation and factors of influence
Bissonnette, Benoît; Courard, Luc ULg; Garbacz, Andrzej et al

in Grantham, Michael (Ed.) Proceedings of the 5th International Conference on Concrete Repair (2014)

Repair and strengthening of existing concrete structures are among the biggest challenges civil engineers are facing today and will have to face in the years to come. Present concerns of sustainable ... [more ▼]

Repair and strengthening of existing concrete structures are among the biggest challenges civil engineers are facing today and will have to face in the years to come. Present concerns of sustainable development emphasizing repair instead of new construction will only strengthen this trend. Concerted efforts towards improving the durability of concrete repairs are still needed from scientists and engineers. One of the critical aspects of durability of concrete repairs and overlays is lasting and sufficient interfacial bond between repair material and existing concrete substrate. This paper summarizes some of the findings of a collaborative study devoted to the most significant factors influencing bond in repairs (roughness, degree of saturation and carbonation of the substrate) and its field evaluation (type of loading, device misalignment). Based on the test results collected in different test programs, guideline-type recommendations for surface preparation prior to repair were issued. [less ▲]

Detailed reference viewed: 9 (0 ULg)
Full Text
See detailMartian thermosphere scale height from SPICAM dayglow measurements
Stiepen, Arnaud ULg; Gérard, Jean-Claude; Bougher, Steve et al

Poster (2014)

We analyze the ultraviolet dayglow in the atmosphere of Mars through CO2+ and CO Cameron emissions. These emissions are accumulated on a large dataset of dayside grazing limb performed by the Spectroscopy ... [more ▼]

We analyze the ultraviolet dayglow in the atmosphere of Mars through CO2+ and CO Cameron emissions. These emissions are accumulated on a large dataset of dayside grazing limb performed by the Spectroscopy for Investigation of Characteristics of the Atmosphere of Mars (SPICAM) instrument on board the Mars Express spacecraft. The temperature of the Martian upper atmosphere can be retrieved from these limb emission profiles. We present discussion on the validity domain for such retrieval. We also show evidence for local (spatial and temporal) variability in the scale height of the atmosphere at the altitude of these emissions. [less ▲]

Detailed reference viewed: 11 (0 ULg)