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See detailEffect of zoledronic acid (single 5 mg infusion) on lumbar spine bone mineral density versus oral risedronate (5 mg/day) over one year in subgroups of patients receiving glucocorticoid therapy
Roux, C.; Reid, D.; Devogelaer, J. P. et al

in Osteoporosis International (2008), 19(S2), 248-249

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See detailEthics for Energy Technologies
Kopriwa, Nicole; Pfennig, Andreas ULg

Poster (2008)

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See detailUsing monovariate and multivariate EOFs to reconstruct missing data with DINEOF
Alvera Azcarate, Aïda ULg; Barth, Alexander ULg; Sirjacobs, Damien ULg et al

Conference (2008)

DINEOF (Data Interpolating Empirical Orthogonal Functions) is an EOF-based method to reconstruct missing data in geophysical data sets. DINEOF can be used to reconstruct monovariate data sets (as sea ... [more ▼]

DINEOF (Data Interpolating Empirical Orthogonal Functions) is an EOF-based method to reconstruct missing data in geophysical data sets. DINEOF can be used to reconstruct monovariate data sets (as sea surface temperature (SST), chlorophyll, etc), and multivariate data sets with little increase in complexity. For multivariate reconstructions, extended EOFs are used, which take into account the interrelationships between related variables to infer data at missing locations. Spatial maps of the standard deviation of the reconstruction error can be also calculated. In the past, DINEOF has been compared to Optimal Interpolation (OI) techniques for the Adriatic Sea SST. The results showed that DINEOF was faster than OI, making it very suitable for operational applications. DINEOF was also more accurate when compared to in situ data. Another advantage of DINEOF is that there is no need for a priori knowledge of the statistics of the reconstructed data set (such as covariance or correlation length), thus reducing the subjectivity of the analysis. DINEOF has been successfully used to reconstruct a large variety of domains over the world ocean, mostly at the regional scale. In addition to an overview of the technique's capabilities, limitations and future developments, recent work aimed to improve the quality of the reconstructions at the global and local scales will be presented. [less ▲]

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See detailDer Einfluss von Einbauten auf den reaktiven Stoffaustausch an Einzeltropfen
Kalem,, Murat; Pfennig, Andreas ULg

Conference (2008)

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See detailSocial inclusion and creative expressions using non-digital artefacts: A case study on pinholes.
Decortis, Françoise ULg; Lentini, Laura ULg

in Proceedings of the 15th European Conference on Cognitive Ergonomics: The ergonomics of cool interaction (2008)

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See detailProsody in second language acquisition: production and perception
Rasier, Laurent ULg

Conference (2008)

Detailed reference viewed: 24 (0 ULg)
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See detailValidation of micro-CT as an imaging tool for the quantification of bone formation in and around bone tissue engineering scaffolds
Kerckhofs, Greet ULg; Neirinck, Barbara; Van Cleynenbreugel, Tim et al

in Abstract book SkyScan User Meeting 2008 (2008)

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See detailEnergy requirements for growth in young tortoises (Testudo hermanni boettgeri Mojsisovic 1889)
Justet, Delphine; Rotat, Christelle; Lhoest, Estelle et al

in Iben, C. (Ed.) Proceedings of the 12th ESVCN Congress (2008)

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See detailA Nested Model of the West Florida Shelf: Assimilation of High-Frequency Radar Currents and study of Loop Current generated flow
Barth, Alexander ULg; Alvera Azcarate, Aïda ULg; Zheng, L. et al

Conference (2008)

High-Frequency Radar Currents are assimilated in a West Florida Shelf (WFS) model based on the Regional Ocean Model System (ROMS) which is nested in the Atlantic Hybrid Coordinate Ocean Model (HYCOM) to ... [more ▼]

High-Frequency Radar Currents are assimilated in a West Florida Shelf (WFS) model based on the Regional Ocean Model System (ROMS) which is nested in the Atlantic Hybrid Coordinate Ocean Model (HYCOM) to include both local and deep-ocean forcing, particularly the Gulf of Mexico Loop Current (LC). An ensemble simulation of the WFS ROMS model is carried out under different wind forcings in order to estimate the error covariance of the model state vector and the covariance between ocean currents and winds. Radial currents measured by HF-Radar antennas near St. Petersburg and Venice, FL, are assimilated using this ensemble-based error covariance. Different assimilation techniques using a time-average ensemble, a filter to reduce surface-gravity waves and an extended state vector including wind stress were tested. Results of WFS ROMS model assimilating surface currents show an improvement of the model currents not only at the surface but also at depth. The LC is a highly unstable current which generates large anticyclones traveling to the West but also a series of smaller anticyclones and filaments moving to the East and affecting the West Florida shelf. An additional tracer is included in the model simulation to track the presence of LC water. With this tracer, the total amount of LC water reaching the shelf and its mechanism is studied. [less ▲]

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See detailLa gestion de la ripisylve : focus sur l'aulne
Mouchet, Frédéric; Debruxelles, Natacha; Claessens, Hugues ULg

in LAMBOT, Francis (Ed.) La gestion physique des cours d'eau. Bilan d'une décennie écologique (2008)

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See detailNew insights in auditory organ development: the inner pillar cell goes it own way
Thelen, Nicolas; Malgrange, B; Thiry, Marc ULg

Poster (2008)

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See detailStriatal Contribution to sleep-dependent motor consolidation
Debas, Karen; Carrier, Julie; Orban, Pierre et al

in NeuroImage (2008), 41(Suppl. 1),

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See detailWind Turbine in my landscape. How people may accept a disturbance of their backyard?
Vanderheyden, Vincent; Vanden Broucke, Stéphane; Schmitz, Serge ULg

in Landscape, identities and development : Lisbon/Obidos 1-5 Septembre 2008 (2008)

Wind Turbines seem for many people to be an intrusive change in the cultural landscape especially in countryside (Pasqualetti). The Lacsawep research project aims to analyse and asses the landscape ... [more ▼]

Wind Turbines seem for many people to be an intrusive change in the cultural landscape especially in countryside (Pasqualetti). The Lacsawep research project aims to analyse and asses the landscape capacity and social attitudes toward wind energy parks in Belgium. Two complementary research lines are developed. On the one hand, a representative survey is done in order to understand the way people valorise landscape in relation to the location of wind energy. On the other hand, the research looks for the background and the underlying in-depth process explaining attitudes and possible “NIMBY-ism” toward energy park. The paper focuses on the attitudes relating to five wind parks in different areas in Belgium. The first case studies underline one interesting concept to understand the acceptation of wind turbines in local landscape: the “reterritorialisation”. People may accept a scar in their landscape if the turbines work “symbolically” for their needs. The paper analyses what people means by landscape, and how they are ready to barter a part of their landscape capital for a local effort to reduce the ecological footprint. [less ▲]

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See detailOUFTI-1: The CubeSat developed at the University of Liège, Belgium
Galli, Stefania; Pisane, Jonathan ULg; Ledent, Philippe et al

Conference (2008)

Detailed reference viewed: 27 (3 ULg)
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See detailValidation of X-ray Micro-CT as Screening Tool for Bone Tissue Engineering Scaffolds
Kerckhofs, Greet ULg; Schrooten, Jan; Van Cleynenbreugel, Tim et al

Conference (2008)

Detailed reference viewed: 25 (3 ULg)
See detailVanadium oxide-based mesoporous films as positive electrode material in Li-ion batteries
Krins, Natacha ULg; Caes, Sébastien ULg; Arrebola, José-Carlos et al

Conference (2008)

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See detailEthisch-normative Fragestellungen auf Grundlage globaler Bilanzen
Kopriwa, Nicole; Pfennig, Andreas ULg

in Chemie Ingenieur Technik (2008), 80(9), 1393-1394

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See detailA comparison of triangle and quadrangle finite elements for large strain elastoplastic formulations
KARASEVA, Olga; Stainier, Laurent ULg; Careglio, C. et al

in Proceedings of ACOMEN’2008, Advanced Computational Methods in Engineering (2008)

The paper presents a comparative study of different elastoplastic large strain formulations used in research groups in Mendoza and Li`ege. The comparison is focused on a few academic standardized problems ... [more ▼]

The paper presents a comparative study of different elastoplastic large strain formulations used in research groups in Mendoza and Li`ege. The comparison is focused on a few academic standardized problems, in particular necking of a cylindrical bar in tension. Stress distribution at necking section, as well as load histories are analyzed for all three formulations. Two other test cases consider bending of the so-called ”Greco” beam and upsetting of a cylinder. Numerical results show that all approaches yield very similar results and thus are equally valid. Furthermore, quadratic 6-noded triangles provide a good alternative to bilinear quadrangles, even if sometimes they appear to be more sensitive to big distorsions. [less ▲]

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See detailChronotype-dependent performance modulation according to time of day : a functional neuroimaging approach
Schmidt, Christina ULg; Collette, Fabienne ULg; Sterpenich, Virginie et al

in NeuroImage (2008), 41(Suppl. 1),

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See detailEvolution de l’économie rurale en Hainaut
Duquesne, Brigitte ULg

Conference (2008)

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See detailThe problem of the consumer may be the solution. Sustainable production from the consumers perspective: the emergence of the "Gaume grassland steer" in Belgium
Stassart, Pierre M ULg

in Stassart, Pierre M (Ed.) Proceedings of the "Sustainable Consumption Alternative Agrifood Systems (2008)

This paper examines the question of sustainable consumption through the consumer’s contribution to the various dimensions of sustainability. The consumer’s participation reveals legitimacy conflicts in ... [more ▼]

This paper examines the question of sustainable consumption through the consumer’s contribution to the various dimensions of sustainability. The consumer’s participation reveals legitimacy conflicts in the process of designing new production systems. The different dimensions of sustainability can be linked to different legitimacy models. When the building of new systems entails a concerted process involving dialogue and deliberation among stakeholders from the agricultural and environmental sectors, various legitimacy principles are mobilized and confront each other through the spokespeople who represent the interests involved. This specific case concerns beef produced from the ”Gaume grassland steer,” a system that can be characterized as agroecological and territorial. The consumers who were involved contributed, through deliberative processes, to the coexistence of various legitimacy principles and stakeholder cooperation. This capacity could be linked to their multiple and fuzzy identities because their identities were shown to be flexible, changing with the institutional setting, which was sometimes consumer-oriented and sometimes territory-driven. This allowed them to act as mediators between environmentalists and farmers. To do this they had to be able to accept the limits of each legitimacy principle and contest the possibility of imposing only one principle on all the others. In so doing they helped the heterogeneous actors to reach compromises by referring to a kind of patrimonial common good. [less ▲]

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See detailExperimental investigations on non-engineered masonry houses in low to moderate seismicity areas
Degée, Hervé ULg; Denoël, Vincent ULg; Candeias, P. et al

in Proceedings of the 14WCEE, 14th World Conference on Earthquake Engineering (2008)

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See detailCompression tests and numerical simulations of thin-walled stainless steel columns
Rossi, Barbara ULg; Degée, Hervé ULg

in International Conference on Coupled instabilities in metal structures: CIMS2008, Sydney 23-25 June 2008 (2008)

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See detailColl2-1, Coll2-1 NO2 and myeloperoxidase serum levels in erosive and non-erosive osteoarthritis of the hands
Ramonda, R; DEBERG, Michelle ULg; Campana, C et al

in Osteoarthritis and Cartilage (2008), 16(Suppl 4), 56

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See detailOn bottle-necks in grammaticalization: the case of become
Petré, Peter ULg

Conference (2008)

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See detailApport pour le restaurateur des ouvrages anciens traitant d'architecture
Gilles, Isabelle ULg

in Actes du LVe Congrès de la Fédération des Cercles d'Archéologie et d'Histoire de Belgique (2008)

Detailed reference viewed: 34 (9 ULg)
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See detailMathematical modelling of atrophic non-union and its treatment
Geris, Liesbet ULg; Vander Sloten, Jos; VanOosterwyck, Hans

in Proceedings of the International symposium on Biomechanics and Biology of Bone Healing (2008)

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See detailConformal ultra shallow junctions by vapor phase doping with boron
Nguyen, Ngoc Duy ULg; Leys, Frederik; Takeuchi, Shotaro et al

Poster (2008)

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See detailPhylogeographic history of north European mammals : implication on their genetic diversity and their conservation
Michaux, Johan ULg

in Abstract book of the 7th Baltic Theriological conference (2008)

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See detailAdvection mechanism and their impact on CO2 net ecosystem exchange at three Carboeurope forest sites
Feigenwinter, Christian; ADVEX team; Heinesch, Bernard ULg et al

Poster (2008)

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See detailUsing stakeholders’ expertise in EMF and soil contamination to improve the management of public policies dealing with modern risk: when uncertainty is on the agenda
Fallon, Catherine ULg; Joris, Geoffrey ULg; Zwetkoff, Catherine ULg

in Martorell, S.; Guedes Soares, C.; Barnett, J. (Eds.) Safety, Reliability and Risk Analysis: Theory and Applications (2008)

In Western societies, public decision-making processes have to deal with both industrial and modern risks. Industrial risks are managed by the traditional public decision-making process (DMP) based on ... [more ▼]

In Western societies, public decision-making processes have to deal with both industrial and modern risks. Industrial risks are managed by the traditional public decision-making process (DMP) based on strong scientific knowledge foundations and trusted institutions. Management of modern risks has to fit within the same institutional settings, even though those risks should be replaced in another political framework because of their specific features (spatio-temporal scale, great scientific uncertainty, invisibility…). We propose two case studies from Belgium, one on soil contamination and one on electromagnetic fields in relation to antennas siting issues, that will help identify and discuss what are the variables that have to be taken into account in order to design new ways of dealing with such modern risks, fostering efficient management and social acceptance. What is at stake is the development of new methodologies for the actors in the policy networks to agree with some appraisal framework. [less ▲]

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See detailPrise de décision en handball : point de vue interne des joueuses et externe du coach
Lenzen, Benoît; Theunissen, Catherine ULg; Cloes, Marc ULg

in Wallian, N.; Poggi, M. P.; Musard, E. (Eds.) Co-construire des savoirs: les métiers de l’intervention dans les APSA. Actes du colloque (2008)

Dans les sports collectifs, l’idée que le coach est le plus à même d’analyser le jeu depuis le bord du terrain et de décider des choix tactiques de ses joueurs est largement répandue. Vraie ou fausse ... [more ▼]

Dans les sports collectifs, l’idée que le coach est le plus à même d’analyser le jeu depuis le bord du terrain et de décider des choix tactiques de ses joueurs est largement répandue. Vraie ou fausse, elle pose la question de la dualité des points de vue interne des joueurs et externe du coach. Pour établir cette comparaison, nous avons soumis six joueuses de handball de haut niveau à des entretiens d’autoconfrontation portant sur des séquences vidéo enregistrées lors de deux matches de championnat. Parallèlement, nous avons utilisé la technique de « film occlusion » (Debanne, 2003) consistant à projeter ces séquences au coach en les interrompant juste avant l’action. Les tentatives du coach de prédire les choix tactiques opérés par ses joueuses se sont soldées par 15 propositions correctes contre 6 erronées. La comparaison des points de vue interne des joueuses et externe du coach est illustrée par quatre situations distinctes : prédictions (a) correcte d’une action négative ; (b) correcte d’une action positive ; (c) incorrecte d’une action négative ; et (d) incorrecte d’une action positive. La discussion souligne les convergences et les divergences entre ces deux points de vue, en insistant plus particulièrement sur les conséquences des divergences. [less ▲]

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See detailMagnetic susceptibility correlation of km-thick Eifelian–Frasnian sections (Belgium–Czech Republic).
Boulvain, Frédéric ULg; Da Silva, Anne-Christine ULg; Mabille, Cedric et al

in SDGG, Heft 58 – Abstract Volume – 26th IAS Regional Meeting/SEPM-CES SEDIMENT 2008 – Bochum (2008)

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See detailSoltons spatiaux dans les guides d'ondes : au-delà du soliton de Townes
Renversez, G.; Drouart, F.; Nicolet, A. et al

in Proceedings of the 27èmes Journées Nationales d'Optique Guidée (JNOG2008) (2008)

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See detailThermocline characterization on modeled and observed temperature profiles: a technique for model error evaluation
Alvera Azcarate, Aïda ULg; Barth, Alexander ULg; Beckers, Jean-Marie ULg

Conference (2008)

The thermocline position in the water column is an important variable in hydrodynamic modeling. Its characterization allows to verify the model accuracy, and analyze the parameter choice made by the ... [more ▼]

The thermocline position in the water column is an important variable in hydrodynamic modeling. Its characterization allows to verify the model accuracy, and analyze the parameter choice made by the modeler, such as the choice of the turbulence closure. A correct representation of the surface ocean boundary layer is also very important in order to correctly represent the air-sea exchanges. Moreover, coupled physicalbiological models require a good representation of the thermocline position, in order to correctly represent the population dynamics at the surface layers. We present a technique to calculate the parameters of the thermocline: depth, width and temperature. These are calculated by a least-squares fitting of individual temperature profiles (from model and observations) to a sigmoid function. The residual is also obtained, giving an estimate of the goodness of the fit. The parameters calculated allow for a comparison of the model thermocline to observations. Our approach consists in comparing the model thermocline depth, width and temperature to observations. By examining separately the accuracy of the model thermocline depth and temperature, we gain insight in the processes that need correction in the model. For example, if the model thermocline is too deep compared to observations, or the width of the thermocline is incorrect, mixing parameters and surface momentum fluxes should be revised. However, if the depth is well represented but the temperature is incorrect, the surface heat fluxes may be the source of the error. By simply comparing model and observed temperature profiles we are not able to differentiate between error sources. The technique presented here stands therefore as a useful method for model evaluation. [less ▲]

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See detailSimulation of the highly non linear properties of bulk superconductors: finite element approach with a backwardmethod and a single time step
Lousberg, G.; Ausloos, Marcel ULg; Geuzaine, Christophe ULg et al

in Proceedings of the fourth international conference on advanced computational methods in engineering, ACOMEN 2008 (2008)

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See detailThe Hybrid Finite-Element Mixing-Cell method: a new flexible method for large scale groundwater modelling
Orban, Philippe ULg; Brouyère, Serge ULg; Wildemeersch, Samuel ULg et al

Conference (2008)

Interest of end-users and policy makers for understanding and managing water systems at the regional scale has increased for years. At this scale, groundwater models of different complexity ranging from ... [more ▼]

Interest of end-users and policy makers for understanding and managing water systems at the regional scale has increased for years. At this scale, groundwater models of different complexity ranging from black-box models to physically based distributed models have been used in various hydrogeological conditions. Black-box models, such as transfer functions, have been applied for example to model groundwater in large scale hydrological models, to model karstic systems, in particular for the interpretation of isotopic data. Their concepts are simple and attractive because they require relatively few data. The main drawbacks are however that modelling results are not spatially distributed and their predictive capability is questionable due to the semi-empirical nature of process descriptions. On the contrary, due to a more advanced description of ongoing processes, physically-based distributed models are expected to have better predictive capabilities than black-box models. However, because such models require more data, they are generally applied for case studies that are better characterized from a hydrogeological point of view, for which the distribution of water levels or solute concentrations in the groundwater systems are needed. For large-scale modelling purposes, black-box models and physically-based distributed models have both proved their utilities and have their own justifications, advantages and disadvantages. However, few attempts have been made to combine the advantages of these two categories of approaches in a unified modelling application. A new flexible modelling approach, the Hybrid Finite-Element Mixing-Cell method (HFEMC), has been developed that allows combining in a single model, and in a fully integrated way, different mathematical approaches of various complexities for groundwater modelling in complex and large scale environments. This method has been implemented in the groundwater flow and solute transport numerical code SUFT3D. The approach has been first tested and illustrated using basic and advanced “synthetic” examples that allow validating and discussing its advantages over existing modelling concepts. The HFEMC approach is now applied for the development of a large scale groundwater flow and solute transport model in different groundwater basins in Belgium. [less ▲]

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See detailFunctional properties of phospholipids and proteins from rapeseed as native tensioactives
Vaca Medina, Guadalupe; Mouloungui, Zéphirin; Deleu, Magali ULg et al

Poster (2008)

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See detailThe Perturbation Finite Element Method for Magnetic Modeling of a Loudspeaker
Ferreira da Luz, Mauricio V.; Dular, Patrick ULg; V Sabariego, Ruth ULg et al

in Proceedings of 6ème Conférence Européenne sur les Méthodes Numériques en Electromagnétisme (NUMELEC2008) (2008)

This paper shows that the application of a perturbation finite element method can provide a useful alternative to correct the equivalent magnetic circuits used to model loudspeakers. A ring magnet design ... [more ▼]

This paper shows that the application of a perturbation finite element method can provide a useful alternative to correct the equivalent magnetic circuits used to model loudspeakers. A ring magnet design of a loudspeaker is modeled by means of an axisymmetric magnetic vector potential formulation. The effects of geometry variations on its performances are analyzed. The perturbation solution allows further adapting and refining the equivalent magnetic circuit model of the loudspeaker to each possible variation. Results will be compared with the classical finite element solution. [less ▲]

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See detailAnti-inflammatory effects of ipratropium bromide in rats with cadmium-induced acute pulmonary inflammation
Zhang, W.; Fievez, Laurence ULg; Cheu, Esteban ULg et al

in Proceedings of the 12th Annual Meeting of the French Society of Pharmacology and Therapeutics (2008)

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See detailContemporaneidad de las figuras de traductor en el Buenos Aires del 1900
Willson, Patricia ULg

in Blas, Amelia; Menczel, Gabriella; Scholz, László (Eds.) El reverso del tapiz. La traducción literaria en el ámbito hispánico, VII Coloquio Internacional de Hispanistas, Budapest, 2008 (2008)

This work analyzes the different “translator figures” that can be identified at the beginning of the 20th century in Buenos Aires. The work contains a theoretical dimension that defines the notion of the ... [more ▼]

This work analyzes the different “translator figures” that can be identified at the beginning of the 20th century in Buenos Aires. The work contains a theoretical dimension that defines the notion of the “translator figure,” understood as a mediating concept between the individual translator and the bundle of social determinations that contribute to the meaning of his or her practice. In second place, it contains a historiographical dimension, which extends from the notion of the learned-translator of the 19th century to that of the professional translator that was established in the 1930s and 1940s. [less ▲]

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See detailScaffolds for bone tissue engineering: design, production and evaluation
Schrooten, Jan; Impens, Saartje; Chen, Y. et al

Conference (2008)

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See detailIncreased analgesic requirements associated with induced labour are related to dystocia
Sougné, Christelle; Dewandre, Pierre-Yves ULg; Hans, Pol ULg et al

in Acta Anaesthesiologica Belgica (2008), 59(3), 229

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See detailOccurrence of AIP Mutations in Sporidic Pituitary Adenomas and Familial Isolated Pituitary Adenomas Kindreds in Valencia, Spain
Fajardo Montanaña, C.; Daly, Adrian ULg; Tichomirowa, M. A. et al

in ENDO 2008: 90th Annual Meeting of the Endocrine Society - Abstract book (2008)

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See detailUse of the daily differencing approach to evaluate uncertainties affecting eddy covariance measurements
Laffineur, Quentin ULg; Aubinet, Marc ULg

Poster (2008)

The eddy covariance technique is recognised to be the most adapted micrometeorological method to study the exchange processes between terrestrial ecosystems and the atmosphere. Like all other methods, it ... [more ▼]

The eddy covariance technique is recognised to be the most adapted micrometeorological method to study the exchange processes between terrestrial ecosystems and the atmosphere. Like all other methods, it is submitted to systematic and random measurement errors. A thorough analysis of these errors is necessary in order to set the limits of validity of the method and to quantify the uncertainty that affects net carbon exchange computed with this method. In this presentation, we’ll concentrate on the random errors using the dailydifferencing approach (DDA) developed by Hollinger and Richardson (2005). The interest of this approach is that it requests only single tower measurements and is thus applicable to all flux tower sites. In this approach, uncertainties are estimated by comparing flux values taken at two successive days at the same hour and under similar meteorological conditions. The analysis may be applied to sensible heat, latent heat and CO2 flux densities. It was applied here to the eddy-covariance data from the Vielsalm mixed forest site (10 years of data) and from the Lonzée agricultural site (4 years of data). Both sites are situated in Belgium and are part of the Carboeurope IP network. The study is developed in the frame of the European IMECC project. The absolute and relative random error was quantified for both sites. Their daily evolution and their dependencies on different climate conditions (magnitude of the flux, PPFD, Rnet, wind velocity, wind direction, clarity index) were analysed. For both sites, the absolute random error increases linearly with the absolute value of flux. This is the principal factor controlling the random error. More particularly the response of the random error to wind velocity was analysed. For the CO2 flux, the absolute random error decreases with increasing wind speed. This effect is more important for the agricultural site than for the forest site. The behaviour of the relative random error with wind speed is more contrasted: it generally decreases with increasing wind speed at low velocities but, for some directions may increase with wind speed at high velocities. In addition, the random error was found very dependent on wind direction at the forest site probably as a result of site heterogeneity. [less ▲]

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See detailPion-photon transition distribution amplitudes
Courtoy, Aurore ULg; Noguera, S.

in AIP Conference Proceedings (2008), 1038

The newly introduced Transition Distribution Amplitudes (TDAs) are discussed for the π-γ transitions. Relations between π-γ and γ-π TDAs for different cases are given. Numerical values for the π-γ TDAs in ... [more ▼]

The newly introduced Transition Distribution Amplitudes (TDAs) are discussed for the π-γ transitions. Relations between π-γ and γ-π TDAs for different cases are given. Numerical values for the π-γ TDAs in different models are compared. GPD's features are extended to TDAs and the role of PCAC highlighted. We give hints for the evaluation of cross sections for meson pair production in our approach. © 2008 American Institute of Physics. [less ▲]

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See detailFra-1 and its associated transcriptome are central determinants of human breast cancer metastasis
Desmet, Christophe ULg; Prieur, A; Reyal, F et al

Poster (2008)

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See detailL’inflammation subclinique des petites voies respiratoires est associée à une perturbation de la fonction pulmonaire évaluée par oscillométrie à impulsions
RicharD, E.; Fortier, G.; Dupuis, M. C. et al

in 36èmes Journées AVEF (2008)

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See detailThe SK channel blocker AG525E1 increases locomotor activity and in vivo dopamine release in the rat nucleus accumbens
Neny, M.; Lemmer, Y.; Graulich, A. et al

in Phillips, P. E. M.; Sandberg, S. G.; Ahn, S. (Eds.) et al Monitoring Molecules in Neuroscience - Proceedings of the 12th International Conference on In Vivo Methods (2008)

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See detailCorrelation between five radioimmunoassay systems for bovine pregnancy associated glycoprotein (PAG).
Ayad, A.; Melo de Sousa, Noelita ULg; Iguer-Ouada, M. et al

in Reproduction in Domestic Animals (2008), 43(Suppl 5), 90

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See detailConsistency of fuzzy model-based reinforcement learning
Busoniu, Lucian; Ernst, Damien ULg; Babuska, Robert et al

in Proceedings of the 2008 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE-08) (2008)

Reinforcement learning (RL) is a widely used paradigm for learning control. Computing exact RL solutions is generally only possible when process states and control actions take values in a small discrete ... [more ▼]

Reinforcement learning (RL) is a widely used paradigm for learning control. Computing exact RL solutions is generally only possible when process states and control actions take values in a small discrete set. In practice, approximate algorithms are necessary. In this paper, we propose an approximate, model-based Q-iteration algorithm that relies on a fuzzy partition of the state space, and a discretization of the action space. Using assumptions on the continuity of the dynamics and of the reward function, we show that the resulting algorithm is consistent, i.e., that the optimal solution is obtained asymptotically as the approximation accuracy increases. An experimental study indicates that a continuous reward function is also important for a predictable improvement in performance as the approximation accuracy increases. [less ▲]

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See detailMathematical modelling of bone regeneration during fracture healing
Geris, Liesbet ULg; VanderSloten@mech.kuleuven.be, Jos; VanOosterwyck, Hans

in proceedings of the OPTEC Topical Workshop on Parameter Estimation in Differential Equations (2008)

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See detailProtein synthesis and folding is a rate limiting step for bacterial growth at low temperatures.
Piette, Florence; D'Amico, Salvino; Leprince, Pierre ULg et al

Poster (2008)

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See detailVariabilité génétique des composés 'Santé' du lait prédits par la spectrométrie du moyen-infrarouge
Soyeurt, Hélène ULg; Dehareng, Frédéric; Dardenne, Pierre et al

in 13ième Carrefour des Productions Animales: L'Elevage des ruminants en question: vérités et contre-vérités (2008)

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See detailLes aspects pratiques de la mise en oeuvre d'un pouvoir de régulation (Angleterre, Italie, Espagne, Bulgarie et Belgique)
Jacob, Steve; Ruano de la Fuente, José; Galabov, Antony et al

in Pauliat, Hélène (Ed.) Services publics, concurrence, régulation : le grand bouleversement en Europe ? (2008)

Compte-rendu de la table ronde sur le sujet organisée dans le cadre du colloque EUROPA de 2006.

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See detailOral and inhaled corticosteroïds decreased eosinophilic airway inflammation and bronchial reactivity in ascaris suum-sensitized and challenged cats
Leemans, Jérôme ULg; Kirschvink, N.; Cambier, Carole ULg et al

in Proceedings: 26th Annual Symposium of the Veterinary and Comparative Respiratory Society (2008)

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See detailHeterogeneity of zooxanthellae density in the coral Acropora globiceps around Moorea (French Polynesia)
Ladrière, Ophélie ULg; van Lierde, Elodie; Penin, Lucie et al

Poster (2008)

Understanding the natural heterogeneity of coral zooxanthellae density appears as very important to understand variations in coral survival due to bleaching (the loss of these micro-algal symbionts ... [more ▼]

Understanding the natural heterogeneity of coral zooxanthellae density appears as very important to understand variations in coral survival due to bleaching (the loss of these micro-algal symbionts). Heterogeneity of coral bleaching at different observation scales (within a colony, among neighbouring colonies of the same species or on a wider scale) remains largely misunderstood. The present work explores intracolonial, spatial and temporal variations of zooxanthellae density in the coral Acropora globiceps Dana 1846, over a period of three months on the forereef of Moorea, French Polynesia. In our study, intracolonial zooxanthellae densities did not vary significantly. However, zooxanthellae densities differed slightly between inner and outer branches but this trend was not significant at 6, 12 and 18 meters depth. On a wider scale, zooxanthellae densities also vary spatially : a positive correlation was observed between depth and symbiont density (density increases when light intensity decreases, so according to depth). Moreover, the location of colonies exposed to different hydrodynamical conditions was not a parameter controling the concentration of zooxanthellae. Finally, the temporal variation of zooxanthellae densities did not show significant variations even if it decreased slightly over the study period. The results of this study highlight the importance of accounting for variations within and among colonies to determine zooxanthellae densities and to assess the evolution of zooxanthellae populations. [less ▲]

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See detailThe Effects of Early Retirement on Youth Unemployment: The Case of Belgium
Jousten, Alain ULg

Conference (2008)

The paper studies the effect of the pension system on the unemployment of the young

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See detailTwo Novel Mutations of the Calcium Sensing Receptor gene
Livadariu, E.; Rydlewski, C.; Hamoir, Etienne ULg et al

in ENDO 2008: 90th Annual Meeting of the Endocrine Society - Abstract book (2008)

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See detailClinical and functional responses to inhaled salmeterol in experimentally asthmatic cats with allergen-induced bronchospasm
Bernaerts, Frederique ULg; Leemans, Jérôme ULg; Kirschvink, N. et al

in Proceedings : 18th Congress European College of Veterinary Internal Medicine – companion animals (2008)

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See detailEquité et efficacité du système d'enseignement
Baye, Ariane ULg

in Le défi social bruxellois, un déficit de qualification, l'école en question (2008)

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See detailOn the design of ferritic stainless steel lipped channel
Rossi, Barbara ULg; Degée, Hervé ULg

in International Conference on Coupled instabilities in metal structures: CIMS2008, Sydney 23-25 June 2008 (2008)

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See detailNightside polar cap boundary and the auroral electrojets
Pitkanen; Aikio, Anita; Amm, Olaf et al

in 37th COSPAR Scientific Assembly (2008)

We present several event studies of the relation between the polar cap boundary (PCB) and the auroral electrojets in the nightside ionosphere. The PCB was determined by the EISCAT incoherent scatter radar ... [more ▼]

We present several event studies of the relation between the polar cap boundary (PCB) and the auroral electrojets in the nightside ionosphere. The PCB was determined by the EISCAT incoherent scatter radar measurements and the east-west equivalent electrojets were derived from the MIRACLE magnetometer data by using the 1-D upward continuation. In several cases, the PCB location in relation to the Harang discontinuity was examined, and comparisons to satellite imagery data of the auroral oval were made. For some of the events, the ionospheric reconnection electric field could be estimated as a measure of the nightside reconnection rate and its variation was studied. [less ▲]

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See detailOptimisation of blocked designs in fMRI studies
Maus, Bärbel ULg; van Breukelen, G. J. P.; Goebel, R. et al

Poster (2008)

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See detailPrediction of the sound pressure levels using a diffusion model: numerical validations and experimental comparisons
Billon, Alexis ULg; Picaut, Judicaël

in Journal of the Acoustical Society of America (2008), 123(5), 3924-3924

redictions of sound propagation in urban areas have attracted a considerable over the years. If the sound energy is assimilated to particles with a constant energy, their movement can be described by a ... [more ▼]

redictions of sound propagation in urban areas have attracted a considerable over the years. If the sound energy is assimilated to particles with a constant energy, their movement can be described by a transport equation. In canyon streets, this transport equation can be reduced to a diffusion equation whose expression is more simple. In this presentation, sound absorption at the boundaries (buildings facades and ground), as well as atmospheric sound attenuation are introduced. The problem is then solved numerically using a finite elements method for the configuration of a canyon street. A systematic validation of the obtained model is carried out in terms of sound pressure level by comparison to numerical simulations taken from the literature. Comparisons with experimental data are then conducted. Finally, applications in more complex configurations are presented. [less ▲]

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See detailEvaluating an ICT-mediated innovative training service from users' perspective: an explorative case study
Peters, Stéphanie ULg; Ledent, M.; Hansez, Isabelle ULg

in Proceedings of the ED-Media Conference 2008 (2008)

By the way of a case study, this paper aims at evaluating the innovative dimension of a training service mediated through Information and Communication Technology (ICT): the so-called e-WOCCQ. The ... [more ▼]

By the way of a case study, this paper aims at evaluating the innovative dimension of a training service mediated through Information and Communication Technology (ICT): the so-called e-WOCCQ. The originality of this article is twofold: (1) to question innovation, and (2) to consider the training more commonly as a service, whose major particularity is the implication of the user in the process. The theoretical framework emphasises on the definition of a service and on the concept of added-value. As this experience took place at the very beginning of the project development, an empirical methodology was developed. We assume that the so-called e-WOCCQ is an innovation as it represents an added value for the users. Results show that e-WOCCQ generates costs and benefits of different order, and that the ratio is influenced by factors mostly linked either with the user. Practical (improvements and targeting) and theoretical (modelisation) implications are discussed. [less ▲]

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See detailSivers asymmetry for the proton and the neutron
Scopetta, S.; Courtoy, Aurore ULg; Fratini, F. et al

in AIP Conference Proceedings (2008), 1056

A formalism is presented to evaluate the Sivers function in constituent quark models. A non-relativistic reduction of the scheme is performed and applied to the Isgur-Karl model. The results obtained are ... [more ▼]

A formalism is presented to evaluate the Sivers function in constituent quark models. A non-relativistic reduction of the scheme is performed and applied to the Isgur-Karl model. The results obtained are consistent with a sizable Sivers effect and the signs for the u and d flavor contributions turn out to be opposite. The Burkardt Sum Rule is fulfilled to a large extent. After the estimate of the QCD evolution of the results from the momentum scale of the model to the experimental one, a reasonable agreement with the available data is obtained. A calculation of nuclear effects in the extraction of neutron single spin asymmetries in semi-inclusive deep inelastic scattering off 3He is also described. In the kinematics of forth-coming experiments at JLab, it is found that the nuclear effects arising within an Impulse Approximation approach are under control. © American Institute of Physics. [less ▲]

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See detailImprovement of He ion induced SiGe layer relaxation by a thin Si:C layer
Buca, D.; Trinkaus, H.; Holländer, B. et al

Conference (2008)

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See detailThe spatial resolution dependency of a micro-CT thresholding method based on the correspondence with microscopic images
Kerckhofs, Greet ULg; Schrooten, Jan; Lomov, Stepan Vladimirovitch et al

in Abstract book International Conference on Computational and Experimental Science and Engineering 2008 (2008)

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See detailLe genre et la diversité : enjeux et opportunités
Cornet, Annie ULg

Conference (2008)

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See detailGENIE: High-Resolution Study of Debris Disks
Absil, Olivier ULg; Augereau, Jean-Charles; Den Hartog, Roland et al

in Richichi, A.; Delplancke, F.; Paresce, F. (Eds.) et al The Power of Optical/IR Interferometry: Recent Scientific Results and 2nd Generation Instrumentation (2008)

GENIE, the Ground-based European Nulling Interferometer Experiment, will combine the lights collected in the L’ band by two VLT telescopes in a destructive way, thereby revealing the thermal and/or ... [more ▼]

GENIE, the Ground-based European Nulling Interferometer Experiment, will combine the lights collected in the L’ band by two VLT telescopes in a destructive way, thereby revealing the thermal and/or scattered emission of faint objects in the close neighbourhood of the target star. A prime scientific goal for GENIE thus consists in the detection and characterization of debris disks around nearby Vega-type stars. Thanks to its high angular resolution and operating wavelength (3.8 µm), GENIE will be particularly sensitive to the thermal emission from the warm dust standing within a few AU from the star, a part of the disks which is not accessible with current detection methods (IR photometric excesses, sub-millimeter imaging, …). In this paper, we investigate the capabilities of GENIE to detect and characterize the physical parameters of the debris disk around zeta Leporis, a prototypical Vega-type star suspected to harbour a warm dust component in its debris disk (Fajardo-Acosta et al., AJ 115, 2101). This study is then extended to the detection of faint exozodiacal disks around typical Darwin/TPF targets, thereby demonstrating the very high potential of GENIE in the field of high-contrast imaging. [less ▲]

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See detailRole of thiamine triphosphate and adenosine thiamine triphosphate in Escherichia coli
Gigliobianco, Tiziana ULg

Poster (2008)

Thiamine triphosphate (ThTP) is found in all organisms studied from bacteria to mammals. In E. coli, ThTP is accumulated as a result of amino acid starvation in the presence of a suitable carbon source ... [more ▼]

Thiamine triphosphate (ThTP) is found in all organisms studied from bacteria to mammals. In E. coli, ThTP is accumulated as a result of amino acid starvation in the presence of a suitable carbon source such as glucose, pyruvate and lactate. On the other hand, adenosine thiamine triphosphate (AThTP), that was recently discovered in E. coli, accumulates in the absence of a carbon source. While AThTP is synthesized in E. coli according to the reaction ThDP + ADP (ATP) ↔ AThTP + Pi (PPi) by a soluble high molecular mass nucleotidyl transferase, the mechanism of synthesis of ThTP remains unknown. Though both bacterial and mammalian adenylate kinases are able to catalyze ThTP synthesis at a very low rate in vitro, this reaction is not responsible for ThTP synthesis in vivo. AThTP is synthesized in E. coli incubated in minimal medium devoid of any carbon source. The addition of glucose leads to the immediate disappearance of AThTP and the appearance of ThTP. ThTP production is strongly impaired in the presence of protonophores, even when a high intracellular concentration of ATP is maintained through glycolysis. Our results suggest that ThTP accumulation requires a high protonmotive force rather than a high intracellular ATP concentration. On the other hand, AThTP is synthesized under conditions of limited energy availability, either in the absence of a carbon source or in the presence of a carbon source and metabolic inhibitors or uncouplers. Interestingly, ThTP and AThTP never accumulate simultaneously in high amounts. Our results suggest that in E. coli both compounds might therefore act as specific “alarmones”, responding to different conditions of cellular stress. [less ▲]

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See detailLes myopathies subcliniques constituent-elles une cause d’intolérance à l’effort ?
Van Erck, Emmanuelle; Lekeux, Pierre ULg

in 36èmes Journées AVEF (2008)

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See detailStatistical Analysis of the night weather conditions favouring the epidemic of the brown rust in the Grand-Duchy of Luxemburg.
El Jarroudi, Moussa ULg; Tychon, Bernard ULg; Maraite, H. et al

in Italian Journal of Agronomy [=IJA] = Rivista di Agronomia (2008), 3(3), 611-612

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