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See detailEvaluation of the load bearing capacity of thin-walled steel members for long span composite floors
Rossi, Barbara ULiege; Jaspart, Jean-Pierre ULiege

in International Colloquium on Stability and Ductility of Steel Structures : SDSS2006, Lisbon 6-8 September 2006 (2006)

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See detailFetal profiles of bovine placental lactogen (PL) and insulin like growth factors (IGF-I and IGF–II) through the late gestation
Alvarez Oxiley, Andrea Vivian ULiege; Melo de Sousa, Noelita ULiege; Sulon, J. et al

in Prooceedings of the 10e Journée de Rencontre Bioforum (2006)

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See detailThe prospects of detecting exo-planets with the Ground-based European Nulling Interferometer Experiment (GENIE)
den Hartog, R.; Absil, Olivier ULiege; Gondoin, P. et al

in Aime, C.; Vakili, F. (Eds.) Direct Imaging of Exoplanets: Science & Techniques (2006)

The European Space Agency's Darwin and NASA's Terrestrial Planet Finder (TPF) are among the most challenging space science missions ever considered. Their principal objective is to detect Earth-like ... [more ▼]

The European Space Agency's Darwin and NASA's Terrestrial Planet Finder (TPF) are among the most challenging space science missions ever considered. Their principal objective is to detect Earth-like planets around nearby stars and to characterize their atmospheres. Darwin and TPF-I are currently conceived as nulling interferometers with free-flying telescopes. Within the frame of the Darwin program, the ESA and the European Southern Observatory (ESO), supported by European industries and scientific institutes, have performed two parallel Phase A studies of a ground-based nulling interferometry experiment (GENIE) at the site of ESO's Very Large Telescope Interferometer (VLTI) in Paranal, Chile. GENIE will demonstrate several key technologies required for the Darwin mission. Its science objectives include the detection and characterization of dust disks and low-mass companions around nearby stars. These studies have established detailed instrumental designs, in which GENIE will operate in the L' band around 3.8 microns as a single Bracewell nulling or constructive interferometer, using either two Auxiliary or two Unit Telescopes. The studies were supported by detailed numerical simulations which indicated the possibility of detection and low-resolution spectroscopy in nulling mode of extra-solar giant planets (EGPs) with atmospheric temperatures down to 700 K, provided that a proper calibration of instrumental effects is applied. Detection of circumstellar exo-zodiacal (EZ) dust clouds is possible down to 0.5 mJy, with interesting prospects for the characterization of planet-forming disks. [less ▲]

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See detailALADDIN: an optimized ground-based precursor for DARWIN
Coudé du Foresto, Vincent; Absil, Olivier ULiege; Barillot, Marc et al

in Aime, C.; Vakili, F. (Eds.) Direct Imaging of Exoplanets: Science & Techniques (2006)

The ALADDIN concept is an integrated Antarctic-based L-band experiment whose purpose is to demonstrate nulling interferometry and to prepare the DARWIN mission. Because of their privileged location, the ... [more ▼]

The ALADDIN concept is an integrated Antarctic-based L-band experiment whose purpose is to demonstrate nulling interferometry and to prepare the DARWIN mission. Because of their privileged location, the relatively modest collectors (1 m) and baseline (up to 40 m) are sufficient to achieve a sensitivity (in terms of detectable zodi levels) which is about twice better than that of a nulling instrument on a large interferometer (such as GENIE at the VLTI), and to reach the 20-zodi threshold value identified to carry out the DARWIN precursor science. These numbers are based on a preliminary design study by Alcatel Alenia Space and were obtained using the same simulation software as the one employed for GENIE. The integrated design enables top-level optimization and full access to the light collectors for the duration of the experiment, while reducing the complexity of the nulling breadboard. [less ▲]

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See detailPEGASE: a DARWIN/TPF pathfinder
Ollivier, M.; Le Duigou, J.-M.; Mourard, D. et al

in Aime, C.; Vakili, F. (Eds.) Direct Imaging of Exoplanets: Science & Techniques (2006)

The space mission PEGASE, proposed to the CNES (Centre National d'Etudes Spatiales = French Space Agency) in the framework of its call for scientific proposals : "formation flying missions", is a 2 ... [more ▼]

The space mission PEGASE, proposed to the CNES (Centre National d'Etudes Spatiales = French Space Agency) in the framework of its call for scientific proposals : "formation flying missions", is a 2-aperture interferometer, composed by 3 free flying satellites (2 siderostats and 1 beam combiner), allowing baselines from 50 to 500 m in both nulling and visibility modes. With an angular resolution of a few mas and a spectral resolution of several tens in the spectral range 2.5-5 microns, PEGASE has several goals:science : spectroscopy of hot jupiters (Pegasides) and brown dwarves, exploration of the inner part of protoplanetary diskstechnology : validation in real space conditions of formation flying, nulling and visibility interferometry concepts.PEGASE has been studied at a 0-level. In this paper, we summarize the scientific program and associated technological and mission trade-off coming from this 0-level study. We also discuss how PEGASE can be considered as a TPF/DARWIN pathfinder in an international roadmap towards more complex space interferometry missions such as DARWIN/TPF. [less ▲]

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See detailTwo different techniques for the evaluation of concrete surface roughness
Courard, Luc ULiege; Perez, Fabien; Bissonnette, Benoît et al

in Beushausen, H.; Dehn, F.; Alexander, M. G. (Eds.) Concrete Repair, Rehabilitation and Retrofitting (2006)

The study of adhesion of repair materials on concrete structures implies a good knowledge of the influence of concrete surface treatment. The effects of surface preparation technique is rarely clearly ... [more ▼]

The study of adhesion of repair materials on concrete structures implies a good knowledge of the influence of concrete surface treatment. The effects of surface preparation technique is rarely clearly described and parameterised: it is consequently difficult to point out the real influence of roughness on adhesion results. A first step was made by using mechanical profilometry to differentiate concrete surfaces prepared by shot blasting, sand blasting and hand or mechanical milling. This technique is very accurate for investigations in laboratory, on a limited surface area. If Quality Control is requested or if it is impossible to core samples from the site, other procedures should be followed. That the reason why opto-morphometry analysis has been developed, in order to analyse larger surfaces. The comparison of the two techniques shows clearly the advan-tages of each one and the precision that can be achieved. [less ▲]

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See detailEffect of cross country on plasma levels of myeloperoxidase in saddle ponies
Art, Tatiana ULiege; Franck, Thierry ULiege; Gangl, M. et al

in Abstracts book of iceep (2006)

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See detailThe use of impact indicators for the evaluation of farm investment support - A case study based on the rural development programme for Wallonia (2000-2006)
Beck, Monika; Dogot, Thomas ULiege

in Bergschmidt, Angela; Dirksmeyer, Walter; Efken, Josef (Eds.) et al Proceedings of the European Workshop on the Evaluation of farm investment support, investment support for improvement of processing and marketing of agricultural products (2006)

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See detailImprovement of Pull-in Voltage of Electromechanical Microbeams Using Topology Optimization
Lemaire, Etienne ULiege; Duysinx, Pierre ULiege; Rochus, Véronique ULiege et al

in 3rd European Conference on Computational Mechanics (ECCM) (2006)

The present work is dedicated to the application of topology optimization in the coupled simulation of multiphysic field problems as in MEMS. Precisely, it describes how it is possible to maximize pull-in ... [more ▼]

The present work is dedicated to the application of topology optimization in the coupled simulation of multiphysic field problems as in MEMS. Precisely, it describes how it is possible to maximize pull-in voltage of an electromechanical microsystem for which the optimization domain is insulated from the electric field. The electromechanical coupling is modeled by the use of a monolithic analysis. The monolithic modeling combined with a Riks-Crisfield algorithm allows computing accurately the pull-in conditions. The optimization task is completed with the help of a sequential convex linear approximation schemes (CONLIN). [less ▲]

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See detailEuropean design recommendations for simple joints in steel structures
Jaspart, Jean-Pierre ULiege

in Proceedings of the International Conference on Stability and Ductility of Steel Structures (2006)

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See detailElasto-plastic material parameter identification by inverse methods: sensitivity matrix calculation
Cooreman, Steven; Bouffioux, Chantal ULiege; Lecompte, David et al

in Proceedings of the SEM annual conference and exposition 2006 (2006)

Inverse methods offer a powerful tool for the determination of the elasto-plastic material properties. Contrary to standard tests, these methods can deal with heterogeneous stress and strain-fields which ... [more ▼]

Inverse methods offer a powerful tool for the determination of the elasto-plastic material properties. Contrary to standard tests, these methods can deal with heterogeneous stress and strain-fields which have a larger information contents and hence allow the simultaneous identification of several material parameters. Moreover, it is expected that the obtained material parameters are more accurate, since these heterogeneous deformation fields are much closer to those occurring in real (metal) forming operations. The principle of the inverse method for the identification of material parameters presented in this paper is to compare an experimentally measured strain field to that computed by a Finite Element (FE) model. The material parameters in the FE model are iteratively tuned in such a way that both strain fields match each other as close as possible. One of the building blocks in this identification procedure is the updating algorithm for the material parameters in the FE model. The key problem of this updating algorithm is the determination of the sensitivity matrix, which expresses the sensitivities of the strains with respect to the material parameters. This paper presents an analytical method for the calculation of this sensitivity matrix in case of simple tensile tests. [less ▲]

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See detailCartographie des données dendrochronologiques du nord-ouest de la France pour la période médiévale (XIVe - XVe siècles) : essai d'interprétation climatique
Blain, Sophie ULiege; Planchon, Olivier; Bernard, Vincent

in Actes du 19e colloque de l'AIC (2006)

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See detailAgriculture in Belgium : main characteristics and problems
Burny, Philippe ULiege

in Lorencowicz, Edmund (Ed.) International Scientific Seminar "Farm machinery management in sustainable agriculture" : Seminar Proceedings (2006)

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See detailLa copie chez Lambert Lombard : procédés et fonctions
Oger, Cécile ULiege; Allart, Dominique ULiege

in Verougstraete, Hélène; Couvert, Jacqueline (Eds.) La peinture ancienne et ses procédés. Copies, répliques et pastiches. (2006)

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See detailDurabilité des réparations du béton: entre théorie et pratique
Courard, Luc ULiege

in Arliguie, Ginette (Ed.) Compte-rendu des Journées Scientifiques du (RF)2B (2006)

Le béton est réputé durable. L’expérience de cette durabilité est toutefois fort limitée en termes d’échelle temporelle : nombreux sont les facteurs – internes et externes - qui peuvent amener une ... [more ▼]

Le béton est réputé durable. L’expérience de cette durabilité est toutefois fort limitée en termes d’échelle temporelle : nombreux sont les facteurs – internes et externes - qui peuvent amener une dégradation parfois très rapide du matériau. Fort heureusement, ces dégradations n’ont que très peu souvent d’effet irrémédiable sur le comportement structurel de l’ouvrage en béton. Les réparations permettent en général de prolonger la durée de vie des structures, en réhabilitant le comportement du matériau : l’adhérence du système de protection ou de réparation constitue dans ce cas une condition nécessaire mais pas toujours suffisante. Définir les conditions d’ « appétence » est la première étape du processus : quelles sont les conditions minimales à rencontrer pour que les matériaux « adhèrent », dans un environnement donné ? Ces conditions sont-elles suffisantes pour garantir la durabilité des réparations ? De plus, l’évaluation de l’adhérence pose problème en soi : traction, cisaillement, torsion sont autant de sollicitations censées représenter le comportement réel d’une interface : quel type d’essai employer ? Comment allier facilité et efficacité ? Laboratoire et chantier ? [less ▲]

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See detailStudy of the determinism of the glanded-plant and glandless-seed trait introgressed in G. hirsutum from G. sturtianum. Germplasm and genetic stocks
Mergeai, Guy ULiege; Lacape; Ndir, K et al

in Proceedings of the international cotton genome initiative, 18-20 September, 2006, Brazilia, Brazil (2006)

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See detailD'une étude de technique narrative aux contes de Voltaire et à l'édition des textes classiques
Tilkin, Françoise ULiege

in Herman, Jan; Peckmans, Paul; Kremer, Nathalie (Eds.) Studies rond de Franse literatuur van de XVIIIe eeuw : Belgian Work in progress : Etudes de littérature française du XVIIIe siècle (2006)

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See detailLa dispute: un mode particulier du conflit verbal enfantin
Meunier, Deborah ULiege

in Ionescu-Ruxndoiu (Ed.) Cooperation and conflict in ingroup and intergroup communication: selected papers from Xth biennial Congress of the IADA (2006)

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See detailL'accès-libre : une reconfiguration efficace du métier de l'élève et de l'enseignant ? Observation et analyse des conditions d'efficacité.
Monville, Bertrand; Devreux, Véronique; Dahmen, Manfred et al

in Actes du 4e Congrès des Chercheurs en Education : La qualité pour tous les élèves : l'école face aux inégalités. (2006)

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See detailVenus' ultraviolet airglow and aurora: Monte Carlo simulations and comparison with observations
Gérard, Jean-Claude ULiege; Shematovich, V. I.; Bisikalo, D. V. et al

in European Planetary Science Congress 2006 (2006)

The Venus airglow has been observed from spectrometers on board rockets probes and satellites such as OUVS on Pioneer Venus Venera Galileo HUT on the Space Shuttle and quite recently SPICAV on Venus ... [more ▼]

The Venus airglow has been observed from spectrometers on board rockets probes and satellites such as OUVS on Pioneer Venus Venera Galileo HUT on the Space Shuttle and quite recently SPICAV on Venus Express The spectrum is dominated by emissions from helium hydrogen oxygen and carbon lines and CO bands Localized emissions of OI at 1304 and 1356 A have been sporadically observed on the nightside and are likely caused by precipitation of auroral electrons in the wake of the planet We have developed a Monte Carlo code solving the Boltzmann equation for energetic electrons to calculate the energy distribution function and fluxes of primary and secondary auroral electrons and for photoelectrons The model is used to calculate the vertical distribution of the excitation rate of various excited states For optically thick transitions such as the 3P-3S triplet at 1304 A a radiative transfert code is used to calculate the emergent emission rate We find that the relative intensity of the oxygen and CO Cameron band emissions is a sensitive indicator of the energy of auroral electrons The observed values indicate that the mean energy is on the order of 10-50 eV Dayglow intensity and distributions are also compared with observed characteristics [less ▲]

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See detailOutils pour gérer l'hétérogénéité des élèves au cours de langues étrangères : synthèse critique d'une recherche-action menée avec de jeunes enseignants.
Beckers, Jacqueline ULiege; Simons, Germain ULiege

in Actes du 4e Congrès des Chercheurs en Education. La qualité pour tous les élèves : l'école face aux inégalités (2006)

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See detailEvaluation of systolic function in calves by Doppler echocardiography: preliminary results
Brihoum, M; Rollin, Frédéric ULiege; Desmecht, Daniel ULiege et al

in Proceedings of the XXIVth World Buiatrics Congress (2006)

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See detailStress echocardiography – a review
Sandersen, Charlotte ULiege; Amory, Hélène ULiege

in Proceedings of the Progress in Equine Sports Medicine (ESPOM) (2006)

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See detailExercise and pharmacological echocardiography stress in healthy horses
Sandersen, Charlotte ULiege; Detilleux, Johann ULiege; Art, Tatiana ULiege et al

in Proceedings of the 7th ICEEP (Equine veterinary supplement 206, 36:159-162) (2006)

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See detailCardiac pumping reserve measured in healthy horses using a dobutamine stress test
Sandersen, Charlotte ULiege; Detilleux, Johann ULiege; Art, Tatiana ULiege et al

in Proceedings of the 45th Congress of the British Equine Veterinary Association (2006)

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See detailEquine oesophageal obstruction : a retrospective study on 143 cases
Seguin, A; Peters, F; Lopez, D et al

in Proceedings of the 45th Congress of the British Equine Veterinary Association (2006)

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See detailAnalyse de sang : interprétation de l’hématologie et de la biochimie de routine
Amory, Hélène ULiege

in In Proceedings of the 23th Annual Congress of the Belgian Equine Practitioners Society (BEPS) (2006)

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See detailEffect of sampling method and culture conditions on the result of fungal culture in the diagnosis of canine sino-nasal aspergillosis.
Legarrérès, A.; Clercx, Cécile ULiege; Mignon, Bernard ULiege et al

in Proceedings of the 24th VCRS meeting (2006)

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See detailLes « burins » de l’atelier de débitage aurignacien de Maisières-Canal (Province du Hainaut, Belgique)
Flas, Damien ULiege; Miller, Rebecca ULiege; Jacobs, Benjamin

in de Araujo Igreja, Marina; Bracco, Jean-Pierre; Le Brun-Ricalens, Foni (Eds.) Burins préhistoriques : formes, fonctionnements, fonctions (2006)

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See detailEffect of parental socio-educational level on memory and attentional measures in children
Catale, Corinne ULiege; Hogge, Michaël; Meulemans, Thierry ULiege

in Book of Abstracts: Annual Meeting of the Belgian Association for Psychological Science (2006)

In developmental neuropsychology, information about the influence of educational variables on executive and memory development is limited. This is particularly surprising when considering the adult ... [more ▼]

In developmental neuropsychology, information about the influence of educational variables on executive and memory development is limited. This is particularly surprising when considering the adult literature regarding the social and cultural effects on cognitive performances, which provide evidence that groups with higher levels of education achieve better on most neuropsychological tests (Ostrosky, Ardila, & Rosselli, 1999). The aim of this study was to analyze the relation between parents’ educational level and executive, attentional, memory and intellectual measures. Memory tasks (working and episodic memory), executive (inhibition and switching), attentional (alertness and selective attentional task) and intellectual tasks (verbal and non verbal subtests of WISC-III) were individually administered to 96 children divided according to 2 variables: age (6 and 10 years old) and parent’s educational level (University, High School and Elementary Education). Results showed an expected significant association between age and performance on all cognitive tasks. There was also a significant effect of parents’ educational level on most verbal tasks performed by children (including memory and verbal intellectual subtests) but also on various executive and attentional tasks (alertness, switching and inhibition tasks). Results confirmed that educational variables significantly influence children cognitive performances and not for only intelligence and verbal tasks, and emphasizes the need of further studies to specify the influence of education on the development of cognition. [less ▲]

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See detailIdentification of hardening behavior using inverse modeling and image correlation
Lecompte, D.; Cooreman, S.; Sol, H. et al

in Proceedings of the SEM annual conference and exposition 2006 (2006)

The basic principle of an inverse modeling procedure as it is used for parameter identification, is the generation of a complex and heterogeneous deformation field that contains as much information as ... [more ▼]

The basic principle of an inverse modeling procedure as it is used for parameter identification, is the generation of a complex and heterogeneous deformation field that contains as much information as possible about the parameters to be identified. One way of obtaining such a non-homogeneous deformation is by making the geometry of the specimen less regular. Another possibility is to make the loading conditions more complex. In this paper both options are actually combined by using a biaxial tensile test on a cruciform specimen in order to identify the parameters of a Swift isotropic hardening law. The yield criterion is modeled by the isotropic Von Mises criterion. The optimization technique used is a constrained gradient based Newton-type routine, which means that in every iteration step, a sensitivity calculation has to be performed in order to indicate the direction in which the parameters are to be optimized. The functional to be minimized is a least-squares expression of the discrepancy between the measured and the simulated strain fields at a certain load. The numerical routines as well as the identification results, based on simulated strain fields, are discussed. [less ▲]

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See detailConception et écriture de l’histoire dans les couvents féminins liégeois des 17e et 18e siècles
Henneau, Marie-Elisabeth ULiege

in Écrire son histoire :les communautés régulières face à leur passé (2006)

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See detailMéthodologie transdisciplinaire de gestion de corpus pour les disciplines de l'interaction : recherche de principes directeurs
Atifi, Hassan; Lejeune, Christophe ULiege; Ninova, Goritsa et al

in Duteil-Mougel, Carine; Foulquié, Baptiste; Rastier, François (Eds.) et al Corpus en lettres et sciences sociales : des documents numériques à l'interprétation (2006)

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See detailRelating Cross Gramians and Sensitivity Analysis in Systems Biology
Streif, S.; Findeisen, R.; Bullinger, Eric ULiege

in Proceedings of the 17th International Symposium on Mathematical Theory of Networks and Systems (MTNS 2006) (2006)

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See detailQuasi steady-state simulation diagnosis using Newton method with optimal multiplier
Rousseaux, Patricia ULiege; Van Cutsem, Thierry ULiege

in IEEE PES General Meeting (Montreal) (2006)

This paper deals with the quasi steady-state approximation of the long-term dynamics. This fast time simulation method assumes that the short-term dynamics are stable and can be replaced by their ... [more ▼]

This paper deals with the quasi steady-state approximation of the long-term dynamics. This fast time simulation method assumes that the short-term dynamics are stable and can be replaced by their equilibrium equations. When the latter stop having a solution, the simulation undergoes a singularity. This paper proposes a method to identify which component(s) are responsible for the loss of equilibrium. The corresponding equations are identified using the Newton method with optimal multiplier. The method has been validated with respect to full time simulation. Very good results are shown on the Nordic-32 system, in cases where long-term voltage instability triggers loss of synchronism. The proposed method enhances time simulation at very low computational cost and can also help correcting model and/or operating point errors. [less ▲]

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See detailA phenomenological model to simulate mechanical tests on ultrafine-grained aluminium produced by ECAE
Diouf, Boubakar; El Houdaigui, Fouad; Poortmans, S. et al

in Mota Soares, C. A. (Ed.) Proceedings of the III European Conference on Computational Mechanics Solids (ECCM III) (2006)

Results of FEM simulations predicting the mechanical behavior at room temperature of test specimens of ultrafine-grained aluminum produced by ECAE are presented. The constitutive law is either based on a ... [more ▼]

Results of FEM simulations predicting the mechanical behavior at room temperature of test specimens of ultrafine-grained aluminum produced by ECAE are presented. The constitutive law is either based on a Hill model or on the Minty micro-macro model and coupled with an isotropic hardening law and/or kinematic hardening law. The yield locus shape, its size and its position during tension, compression and torsion tests have been studied. Initial texture measurements allow the identification of a constitutive law based on a set of representative crystals and crystal plasticity approach using a Full- Constraint Taylor model. Finite element simulations using the previous constitutive laws are compared with experimental investigations. The results show that applying an initial back stress identified by tensile and compression tests to the yield locus predicts the initial flow stress in torsion test. The Minty micro-macro model coupled with a Voce type hardening model gives a good agreement with experimental results for the prediction of the shape at different stages of deformation of a compressed test specimen. The simulation of tensile tests underline the need of inverse modeling as, due to the test specimen shape, the test is far from being homogeneous. The link between test specimen length and the necking appearance is studied. [less ▲]

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See detailPrediction of deformation textures in zirconium based on a simplified modelling of grain interaction
Lelotte, Thomas; Delannay, L.; Habraken, Anne ULiege

in Khan, A. S. (Ed.) Proceedings of the Plasticity Conference 2006 (2006)

The goal of this study is to apply a “multisite” crystal plasticity model to the prediction of texture evolution in zirconium deformed at high temperature. The model under consideration is an extension of ... [more ▼]

The goal of this study is to apply a “multisite” crystal plasticity model to the prediction of texture evolution in zirconium deformed at high temperature. The model under consideration is an extension of the elastic-viscoplastic “multisite model” proposed by Delannay et al. [2005] which has been adapted to account for a new type of grain interaction (Van Houtte et al. [2005]). Predictions of the model are compared to experimental data. Two forming processes are considered: sheet rolling (Lebensohn et al. [1994]) and the torsion of a cylindrical bar (Sanchez et al. [2001]). [less ▲]

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See detailIdentification of yield locus parameters of metals using inverse modeling and full field DIC
Lecompte, D.; Cooreman, S.; Sol, H. et al

in Proceedings of the 7th national congress on theoretical and applied mechanics (2006)

The basic principle of the inverse modeling procedure as it is used for parameter identification is the generation of a complex and heterogeneous deformation field that contains as much information as ... [more ▼]

The basic principle of the inverse modeling procedure as it is used for parameter identification is the generation of a complex and heterogeneous deformation field that contains as much information as possible about the parameters to be identified. One way of obtaining such a non-homogeneous deformation is by making the geometry of the specimen less regular. Another possibility is to make the loading conditions more complex. In this paper both options are actually combined by using the concept of a biaxial tensile test on a perforated cruciform specimen. In the present paper, the work hardening of the material is assumed to be isotropic and it is described by a Swift law. The yield locus is modeled by the anisotropic Hill48 criterion. The optimization technique used is a constrained gradient based Newton-type routine, which means that in every iteration step, a sensitivity calculation has to be performed in order to indicate the direction in which the parameters are to be optimized. The functional to be minimized is a least-squares expression of the discrepancy between the measured and the simulated strain fields at a certain load. The numerical routines as well as the identification results of the different parameters, based on simulated strain fields, are discussed. [less ▲]

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See detailInhomogeneous and anisotropic deformation behavior and strain hardening of ultrafine-grained aluminium by ECAP
Poortmans, Stijn; El Houdaigui, Fouad; Habraken, Anne ULiege et al

in Zhu, Y. T.; Langdon, T. G.; Horita, Z. (Eds.) et al Proceedings of the Ultrafine Grained Materials IV Conference (2006)

Hot-rolled AA1050 commercial pure aluminum was deformed by ECAP (Equal Channel Angular Pressing) at room temperature following route BC for 8 passes. Mechanical testing at room temperature on both hot ... [more ▼]

Hot-rolled AA1050 commercial pure aluminum was deformed by ECAP (Equal Channel Angular Pressing) at room temperature following route BC for 8 passes. Mechanical testing at room temperature on both hot-rolled aluminum and aluminum after ECAP consisted of uniaxial tension, axisymmetric compression and shear by torsion. The phenomenological Hill’s criterion identified from texture data accounts for the observed tension-compression asymmetry due to ECAP and predicts torsion yielding close to measurements. FE simulations of the compression tests are performed with a Hill model or a Minty micro-macro model and coupled with an isotropic Voce saturation hardening law. These simulations compute the inhomogeneous behavior due to barreling, the observed sample anisotropy and the force-displacement curve. Comparisons of numerical and experiments results provide a first identification of the hardening parameters and the friction coefficient during compression tests. [less ▲]

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See detailComparison between homogeneous and heterogeneous field information for plastic material identification
Lecompte, D.; Sol, H.; Vantomme, J. et al

in Grédiac, Michel; Huntley, Jonathan (Eds.) Proceedings of Photomecanics Conference 2006 (2006)

The accuracy of a Finite Element Simulation for plastic deformation strongly depends on the chosen constitutive laws and the value of the material parameters within these laws. The identification of those ... [more ▼]

The accuracy of a Finite Element Simulation for plastic deformation strongly depends on the chosen constitutive laws and the value of the material parameters within these laws. The identification of those mechanical parameters can be done based on homogeneous stress and strain fields such as those obtained in uniaxial tensile tests and simple shear tests performed in different plane material directions. Another way to identify plastic material parameters is by inverse modeling of an experiment exhibiting a heterogeneous stress and strain field. Experimental forces and strains are in this case compared to the simulated ones and it is tried to reduce the difference in a least-squares sense by optimizing the model parameters. The optimization technique used is this case is gradient based, which means that at every iteration a sensitivity calculation has to be performed in order to indicate the direction in which the parameters are to be identified. The basic principle of the inverse modeling procedure as it is used for parameter identification is the generation of a complex and heterogeneous deformation field that contains as much information as possible about the parameters to be identified. One way of obtaining such a non-homogeneous deformation is by altering the geometry of the specimen for a uniaxial test. Another possibility is to make the loading conditions more complex. In this paper both options are actually combined by using a biaxial tensile test on a perforated cruciform specimen. In the present paper, the work hardening of the material is assumed to be isotropic and it is described by a Swift law. The yield locus is modeled by the anisotropic Hill48 criterion. A comparison is made between the identification of the Hill48 parameters based on the one hand on the Lankford coefficients [1] and on the inverse modeling of a biaxial tensile test on the other hand [less ▲]

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See detailEarly bifrontal brain injury: sequential neuropsychological developmental features
Bonnier, Christine; Potelle, Dominique; Buelens, M et al

in Revista de neurologia (2006)

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See detailAnalysis of speckle patterns for deformation measurements by DIC
Lecompte, David; Sol, H.; Vantomme, J. et al

in Slangen, Pierre; Cerruti, Christine (Eds.) Proceedings of SPIE Vol. 6341 (2006)

Digital Image Correlation (DIC) – also referred to as white light speckle technique – is an optical-numerical full-field measuring technique, which offers the possibility to determine in-plane ... [more ▼]

Digital Image Correlation (DIC) – also referred to as white light speckle technique – is an optical-numerical full-field measuring technique, which offers the possibility to determine in-plane displacement fields at the surface of objects under any kind of loading. For an optimal use of the method, the object of interest has to be covered with a speckle pattern. The present paper studies the efficiency of a random speckle pattern and its influence on the measured in-plane displacements with respect to the subset size. First a randomly sprayed speckle pattern is photographed three times. Each picture is taken with a different zoom, yielding three speckle patterns, which are different by the size of the speckles. Secondly a number of speckle patterns are generated numerically using a given speckle size and image coverage. Subsequently, each speckle pattern image undergoes a numerically controlled deformation, which is measured with digital image correlation software. Both imposed and measured displacements are compared and it is shown that the size of the speckles combined with the size of the used pixel subset, clearly influences the accuracy of the measured displacements. Furthermore it is shown that it is possible to create an optimal speckle pattern when a given subset size is chosen. [less ▲]

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See detailEvaluation of a portable equine metabolic measurement system
Duvivier, V. H.; Van Erck, Emmanuelle; De Moffarts, Brieuc et al

in 7th International Conference on Equine Exercise Physiology (2006)

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See detailDes épithètes exclusives dans la Grèce polythéiste ? L’exemple d’Ourania
Pirenne-Delforge, Vinciane ULiege

in Belayche, Nicole; Brulé, Pierre; Freyburger, Gérard (Eds.) et al Nommer les dieux. Théonymes, épithètes, épiclèses dans l’Antiquité (2006)

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See detailConservation des ressources génétiques animales en Région wallonne: le paradoxe de l'hyperspécialisation
Daniaux, Christel ULiege; Stassart, Pierre M ULiege; Massart, Serges et al

in 13éme journées "3R" Proceeding (2006)

The main breed of the waloon regio are adapted to conditions of intensive production with extrem phenotypic experssion.

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See detailTable ronde "Religions et service public de l'éducation en Europe"
Husson, Jean-François ULiege; Moleda-Zdziech, Malgorzata; Lichtenthäller, Barbara et al

in Pauliat, Hélène (Ed.) Services publics et religions : les nouvelles frontières de l’action publique en Europe (2006)

Panel on religions and education : organisation of denominational schools, religious teaching, religious symbols.

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See detailTable ronde "Religions, Justice, Armée"
Ruano de la Fuente, José-Manuel; Husson, Jean-François ULiege; Jung, Simone et al

in Pauliat, Hélène (Ed.) Services publics et religions : les nouvelles frontières de l’action publique en Europe (2006)

Compte rendu de la table ronde organisée dans le cadre du colloque d'EUROPE en novembre 2005. J'interviens principalement sur les questions relatives au fait religieux dans les forces armées et les ... [more ▼]

Compte rendu de la table ronde organisée dans le cadre du colloque d'EUROPE en novembre 2005. J'interviens principalement sur les questions relatives au fait religieux dans les forces armées et les établissements pénitentiaires. [less ▲]

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See detailApport de la granulométrie laser dans la caractérisation physique des fillers calcaires
Michel, Frédéric ULiege; Courard, Luc ULiege

in Arliguie, Ginette (Ed.) Compte-rendu des Journées Scientifiques du (RF)2B (2006)

On assiste actuellement en Belgique à une baisse importante de la production des matériaux habituellement employés comme additions dans les composites à matrice cimentaire (cendres volantes, laitier de ... [more ▼]

On assiste actuellement en Belgique à une baisse importante de la production des matériaux habituellement employés comme additions dans les composites à matrice cimentaire (cendres volantes, laitier de haut fourneau). Pour faire face à ce problème, un vaste programme de recherche a été mis sur pied dans le but d’évaluer le potentiel de valorisation de fillers calcaires, de production wallonne, dans ce secteur. Ce papier traite des techniques utilisées pour caractériser de manière physique les fillers calcaires. Une étude paramétrique a permis de définir les conditions optimales de mesure de leur granulométrie par diffraction laser. Les résultats ont été comparés à ceux obtenus par la technique plus classique de tamisage en voie humide. La surface spécifique des poudres a également été mesurée par adsorption d’azote (méthode BET), par perméabilité (Blaine) et calculée à partir des résultats de la diffraction, via le diamètre de Sauter. [less ▲]

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See detailErnest d'Autriche, gouverneur des Pays-Bas (1594-1595). Portrait d'un amateur de peinture et analyse du contenu de sa collection
Allart, Dominique ULiege

in Cauchies, Jean-Marie; Notflatscher, Heinz (Eds.) Pays bourguignons et autrichiens (XIVe-XVIe siècles) : une controntation institutionnelle et culturelle (2006)

Le 30 janvier 1594, l’archiduc Ernest, fils de Maximilien II, faisait sa joyeuse entrée à Bruxelles. Il venait en effet d’être nommé gouverneur général des Pays-Bas par son puissant parent, Philippe II ... [more ▼]

Le 30 janvier 1594, l’archiduc Ernest, fils de Maximilien II, faisait sa joyeuse entrée à Bruxelles. Il venait en effet d’être nommé gouverneur général des Pays-Bas par son puissant parent, Philippe II. Son séjour aux Pays-Bas allait être de courte durée. Une maladie qui le minait dès avant son départ l’emporta dans la nuit du 20 au 21 février 1595. Personnalité politique de médiocre envergure, malhabile et velléitaire, Ernest apparut comme un fantoche entre les mains du monarque espagnol, ce qui lui valut d’être vilipendé avant de sombrer dans l’oubli. La collection de peintures qu’il constitua durant les derniers mois de sa vie passés aux Pays-Bas mérite pourtant qu’on s’y attarde. Certes de faible ampleur par rapport à celle de son frère, l’empereur Rodolphe II, elle se signalait par son excellent niveau qualitatif, réunissant des œuvres de Hubert Van Eyck, Rogier van der Weyden, Bosch, Floris, Mostaert, Grimmer et Lucas van Valckenborch. Mais sans conteste, c’est une suite des Mois de Bruegel qui en était le plus prestigieux joyau. Elle avait été offerte à l’archiduc par la Ville d’Anvers, lorsque celui-ci fit sa joyeuse entrée dans la cité scaldienne, le 5 juillet 1594. Il y a lieu de réévaluer la place que l’archiduc Ernest occupa dans le contexte du collectionnisme de la fin du XVIe siècle ; elle a été injustement occultée par un intérêt trop exclusivement centré sur Rodolphe II. Il convient notamment de déterminer les circonstances dans lesquelles Ernest de Habsbourg procéda à ses acquisitions, et de voir comment ses choix s’inscrivent dans l’histoire du goût, reflétant un jugement très sûr, ainsi qu'un vif intérêt pour les diverses tendances qu’illustrèrent les peintres des Pays-Bas dans la seconde moitié du XVIe siècle. Enfin, il importe de préciser quel fut le destin de ses collections. L’historique de la fameuse suite de Bruegel, en particulier, appelle maintes remarques. Il est très loin d’être aussi clair et solide qu’on s’est plu à l’affirmer jusqu’ici. [less ▲]

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See detailLes Élements espagnols de Jules Herbillon dans les notices étymologiques du TLF
Baiwir, Esther ULiege

in Buchi, Eva (Ed.) Actes de la journée d'étude "Lexicographie historique française : autour de la mise à jour des notices étymologiques du Trésor de la langue française informatisé» (Nancy/ATILF, 4 novembre 2005) (2006)

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See detailLa chronologie de Biryuchya Balka (Région de Rostov, Russie)
Otte, Marcel ULiege; Matyukhin, Alexander; Flas, Damien ULiege

in Rannyaya pora verkhnego Paleolita evrazii: obtcheié i lokalnoié (2006)

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See detailGilles of Binche and Processional Giants and Dragons in Belgium and France : Evolution and Social Impacts
Lempereur, Françoise ULiege

in Proceedings of the 2006 International Conference on Intangible Cultural Heritage of Daija Matsu (2006)

The Carnival of Binche and the Processional giants and dragons of Mons and Ath are the first Belgian elements recognized as Masterpieces of the Oral and Intangible Cultural Heritage of Humanity by UNESCO ... [more ▼]

The Carnival of Binche and the Processional giants and dragons of Mons and Ath are the first Belgian elements recognized as Masterpieces of the Oral and Intangible Cultural Heritage of Humanity by UNESCO. This communication introduced them and thinks about the importance of this heritage and about the dangers that get to it. [less ▲]

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See detailMorphological variability of some Devonian miospores
Breuer, P.; Filatoff, J.; Steemans, Philippe ULiege

in Palaeozoic palynology in space and time. CIMP general meting (2006)

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See detailEVALUATION OF NOVEL SYNTHETIC POLYCATION ACTION ON VISCOELASTIC PROPERTIES OF ERYTHROCYTE MEMBRANE
Riquelme, B; Foresto, P; Relancio, F et al

in Annales AFA (2006)

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See detailAnalyse qualitative de la problématique de l’abandon de la natation de compétition en Communauté française de Belgique
Lefefvre, Fabien; Habsch, Ingrid; Cloes, Marc ULiege

in Carlier, Ghislain; Bouthier, Daniel; Bui-Xuän, G. (Eds.) Intervenir en éducation physique et en sport. Recherches actuelles (2006)

Dans cette étude, nous aborderons le phénomène de l’abandon de la pratique compétitive de la natation en privilégiant une approche qualitative, contrairement à ce qui a déjà été proposé dans la ... [more ▼]

Dans cette étude, nous aborderons le phénomène de l’abandon de la pratique compétitive de la natation en privilégiant une approche qualitative, contrairement à ce qui a déjà été proposé dans la littérature. En récoltant des données chez les différents acteurs de clubs, nous ambitionnons de mieux cerner le phénomène et, surtout, de croiser les données issues des pratiquants avec celles des autres personnages clés de la réussite sportive. Mettre en exergue les solutions imaginées par les dirigeants sportifs pour lutter contre ce phénomène et offrir une base de réflexion et d’action aux praticiens constituent les finalités pratiques de cette étude. [less ▲]

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See detailImpact d’un sport-études sur la vie d’un établissement scolaire
Frédéric, Olivier; Louis, Lionel; Cloes, Marc ULiege

in Carlier, Ghislain; Bouthier, Daniel; Bui-Xuân, G. (Eds.) Intervenir en éducation physique et en sport. Recherches actuelles (2006)

Nous nous proposons d’étudier le cas d’un établissement secondaire dans lequel a été créée une section sport-études et d’analyser l’impact social de cette filière d’études dans l’école en question en ... [more ▼]

Nous nous proposons d’étudier le cas d’un établissement secondaire dans lequel a été créée une section sport-études et d’analyser l’impact social de cette filière d’études dans l’école en question en recueillant, auprès des différents acteurs de la structure, des informations concernant les objectifs associés au sport-études, les motifs de participation, les relations entre les différents acteurs du site, la perception du sport-études et la perception du niveau des élèves. Pour d’évidentes raisons de place, nous avons choisi de n’aborder dans cet article que les trois premiers aspects. [less ▲]

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See detailEvaluation de l’efficacité d’un module d’enseignement à distance centré sur l’analyse de tâche et l’émission de feed-back
Lenzen, Benoît; Gustin, Frédéric; Cloes, Marc ULiege

in Carlier, Ghislain; Bouthier, Daniel; Bui-Xuân, G. (Eds.) Intervenir en éducation physique et en sport. Recherches actuelles (2006)

L’importance du feedback dans la relation pédagogique d’enseignement a été mise en évidence dans de nombreuses recherches de type « processus-produit » et les mécanismes relatifs à son émission ont par ... [more ▼]

L’importance du feedback dans la relation pédagogique d’enseignement a été mise en évidence dans de nombreuses recherches de type « processus-produit » et les mécanismes relatifs à son émission ont par ailleurs été bien définis. La question qui se pose est la suivante : Comment intervenir dans la formation initiale des enseignants en éducation physique et des entraîneurs afin de développer chez eux l’aptitude à corriger les performances motrices des apprenants ? [less ▲]

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See detailReconversion to organic famring, between organic rules and agro-food chain referential: How to fit out the organic fattening referential?
Jamar, Daniel; Decruyenaere, Virginie; Stassart, Pierre M ULiege et al

in European Joint Organic Congress (2006)

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See detailFinite element simulations of nanoindentation in beta metastable Ti alloys
Gerday, Anne-Françoise ULiege; Clement, N.; Jacques, P. J. et al

in Juster, Neal; Rosochowski, Andrzej (Eds.) Proceedings of the 9th International ESAFORM Conference on Material Forming (2006)

Nanoindentation is a versatile tool to probe local plastic properties of materials. Finite element (FE) modelling is currently used to identify material data from nanoindentation tests [1-4]. The general ... [more ▼]

Nanoindentation is a versatile tool to probe local plastic properties of materials. Finite element (FE) modelling is currently used to identify material data from nanoindentation tests [1-4]. The general ambition of this research is to extract the material parameters describing the response of a new Ti alloy, called Ti-555, in order to perform simulations on representative microscopic cells and guide the optimisation of this alloy. In this paper, the first steps of the identification of the macroscopic flow parameters of the β-phase are described. The nanoindentation tests using a pyramidal Berkovich diamond indenter are performed in the β-phase. The FEM results with different parameters of an isotropic and anisotropic elasto-plastic (EP) constitutive law are analyzed and the predicted shapes are compared to the final shape of the indented material. The FE results very much depend on physical model choices, and cannot rely on an automatic identification approach. [less ▲]

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See detailDéfinir, normaliser, enseigner les discours universitaires
Defays, Jean-Marc ULiege

in Suomela-Salmi, Eija; Dervin, Fred (Eds.) Perspectives interlinguistiques et interculturelles sur le discours académique (2006)

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See detailGeo-electrical data fusion by stochastic co-conditioning simulations for delineating groundwater protection zones
Dassargues, Alain ULiege

in CMWR XVI - Computational Methods in Water Resources (2006)

In hydrogeology, advances in the delimitation of protection zones are made by the use of stochastic simulations integrating all available data. In practice, due to the few available measurements of the ... [more ▼]

In hydrogeology, advances in the delimitation of protection zones are made by the use of stochastic simulations integrating all available data. In practice, due to the few available measurements of the main parameters (hard data), it is very useful to integrate several secondary properties of the media as indirect data (soft data) to reduce the uncertainty of the results. In aquifers, most of the solute spreading is governed by the hydraulic conductivity (K) spatial variability, which is generally considered as the main uncertain parameter. A stochastic approach integrating hydraulic conductivity measurements (hard data), head observations and shallow electrical resistivity tomography (soft data) is presented. Results are discussed on a synthetic and on a practical case. It is shown in practice how the uncertainty of the well capture zone probability distribution (CaPD) can be reduced. Since geophysical data and head observations are easier to collect on the field then hydraulic conductivity measurements, they are generally more abundant. The methodology presented can even be used in real applications when little or no information is available about the hydraulic properties, through the conditioning on geophysical data and/or head observations. [less ▲]

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See detailFUNCTIONALITY OF SYNTHETIC POLYCATIONS FOR THE MASKING OF ANTIGENIC SITES BY MEANS OF OPTICAL METHODS
Relancio, MF; Riquelme, B; Dumas, D et al

in Proceeding of the 91st Annual Meeting of the Argentine Physics Association (2006)

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See detailL'Interculturalité a-t-elle un avenir ?
Defays, Jean-Marc ULiege

in Dufays, Jean-Louis; Collès, Luc; Thyrion, Francine (Eds.) Quelle didactique de l'interculturel dans les nouveaux contextes du FLE/S? (2006)

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See detailComparaison de l’antibiorésistance vis-à-vis de la fluméquine et de l’enrofloxacine chez des souches d’Escherichia coli d’oiseaux de compagnie ou d’oiseaux de production
Marlier, Didier ULiege

in Proceedings du 3ème colloque international de bactériologie francophone (2006)

Les résistances simples ou conjointes à la fluméquine et à l’enrofloxacine sont significativement plus rares chez les oiseaux de compagnie que chez ceux de production et semblent être dues à une sélection ... [more ▼]

Les résistances simples ou conjointes à la fluméquine et à l’enrofloxacine sont significativement plus rares chez les oiseaux de compagnie que chez ceux de production et semblent être dues à une sélection directe après traitement. Chez les oiseaux de production la fréquence des souches résistantes n’est influencée ni par l’âge, ni par la possibilité ou non de traiter les animaux (industrielle vs « bio-label »). Ces observations peuvent s’expliquer par le portage de souches résistantes dès la naissance des poussins; souches acquises au départ du cheptel reproducteur, ce dernier jouant un rôle disséminateur majeur lié à l’aspect typiquement pyramidal de la production avicole (faible nombre de parentaux qui produisent un grand nombre de volailles de production). [less ▲]

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See detailExperimental and numerical study of flange class 3 cross-section members
Boissonnade, N.; Jaspart, Jean-Pierre ULiege

in Proceedings of the International Conference on Stability and Ductility of Steel Structures (2006)

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See detailProduction, gestion et utilisation des outillages lithiques du Chasséen méridional
Gassin, Bernard; Léa, Vanessa; Linton, Jimmy ULiege et al

in Astruc, Laurence (Ed.) Normes techniques et pratiques sociales de la simplicité des outillages pré- et protohistoriques. Actes des XXVIe rencontres d’archéologie et d’histoire d’Antibes (2006)

Is the opposition between specialized and non specialized productions a key to charac- terize the lithic assemblages from the southern Chassey Culture ? The former have been used to define the culture ... [more ▼]

Is the opposition between specialized and non specialized productions a key to charac- terize the lithic assemblages from the southern Chassey Culture ? The former have been used to define the culture itself and to build up theories based on craft specialization to approach the social organization of these Neolithic groups. Our first studies about the latter show that they reveal specific technical activities conducted at the site or that they are useful to build up interpretation on both site functions and social organization. We base our study on a corpus of sites localized in the south of France–from Alpes- Maritimes to Lot–between 4300 and 3500 BC cal. Different site function are here repre- sented and these sites are situated at different levels in the area of bedoulien flint diffu- sion, from the production zone to the border of the diffusion area : when and where do the different degrees of know-how appear ? How far are the consumption modes (i.e., tool curation and use) directly related to the production modes ? [less ▲]

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See detailA scale transition procedure for flexural effects
Mercatoris, Benoît ULiege; Massart, Thierry J.

in 7th National Congress on Theoretical and Applied Mechanics (NCTAM2006) (2006)

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See detailSeismic microzonation of slopes susceptible to landsliding : Use of Ambient noise and Earthquake Ground Motion Measurements
Havenith, Hans-Balder ULiege; Torgoev, Isakbek; Alvarez, Sonya et al

in Geophysical Research Abstracts (2006)

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See detailDetermination of Vs-models for the Basel region: Comparison between Array measurements, SASW and S-wave reflection
Havenith, Hans-Balder ULiege; Polom, Ulrich; Fäh, Donat et al

in Geophysical Research Abstracts (2006)

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See detailFlexural response of heterogeneous structures using computational homogenisation
Mercatoris, Benoît ULiege; Massart, Thierry J.

in 8th International Conference on Computational Structures Technology (CST2006) (2006)

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See detailStandardisation and Validation of Micro-CT for the Morphological Characterisation of Porous Structures
Kerckhofs, Greet ULiege; Schrooten, Jan; Wevers, Martine et al

in Proceedings book ECNDT 2006 (2006)

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See detailRéflexions relatives à l'édition du Hordad Yasht de l'Avesta
Swennen, Philippe ULiege

in Proceedings of the 5th Conference of the Societas Iranologica Europaea held in Ravenna, 6-11 october 2003, vol. I (Ancient and Middle Iranian Studies) (2006)

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See detailOn the use of variable complementarity for feature selection in cancer classification
Meyer, Patrick ULiege; Bontempi, Gianluca

in Applications of Evolutionary Computing (2006)

Detailed reference viewed: 26 (1 ULiège)
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See detailMédias dominants et altermondialisme. De l’ouverture à la censure
Geuens, Geoffrey ULiege

in Durand, Pascal; Hébert, Pierre; Mollier, Jean-Yves (Eds.) et al La censure de l’imprimé. Belgique, France, Québec et Suisse romande (XIXe et XXe siècles) - Actes du colloque international Censure et Imprimé (Université de Versailles, Saint-Quentin-en-Yvelines, 21-23 mai 2002) (2006)

Les débats médiatiques sur la mondialisation s’articulent autour de deux thèses apparemment antagonistes. Pour les partisans du libéralisme économique et les représentants des milieux d’affaires, il ... [more ▼]

Les débats médiatiques sur la mondialisation s’articulent autour de deux thèses apparemment antagonistes. Pour les partisans du libéralisme économique et les représentants des milieux d’affaires, il s’agit de condamner l’interventionnisme et le dirigisme politique dans le libre-jeu de l’économie de marché. Les chefs de file syndicaux et dirigeants réformistes de l’« altermondialisme », entendent, quant à eux, défendre, bec et ongles, l’idée d’un personnel politique victime de la bourse et des pressions de divers lobbies industriels et financiers. Dans les deux cas pourtant, on procède à une dissociation artificielle et trompeuse de l’économique et du politique. Cette représentation dominante de la mondialisation est à l’origine d’une censure, celle qui, derrière le paravent de l’Etat « victime » ou « bourreau » des marchés, refuse la parole aux critiques dénonçant les liens organiques entre pouvoirs économique, politique et médiatique. [less ▲]

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See detailLa ‘preuve cartésienne’ et la voie analytique de Kant
Dubouclez, Olivier ULiege

in Fichant, Michel; Marion, Jean-Luc (Eds.) Descartes en Kant (2006)

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See detailLes grandes lignes de l'interprétation heideggérienne de la monadologie
Pieron, Julien ULiege

in M. S. Alves, Pedro; Santos, José Manuel; Sá, Alexandre Franco de (Eds.) Humano e Inumano. A Dignidade do Homem e os Novos Desafios (Actas do Segundo Congresso Internacional da Associação Portuguesa de Filosofia Fenomenológica) (2006)

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See detailReal attacks on virtual networks: Vivaldi out of tune
Kaafar, M. A.; Mathy, Laurent ULiege; Turletti, T. et al

in Proceedings of the 2006 SIGCOMM workshop on Large-scale attack defense (2006)

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See detailVoice over application-level multicast
Blundell, N.; Egi, N.; Mathy, Laurent ULiege

in Performance, Computing, and Communications Conference, 2006. IPCCC 2006. 25th IEEE International (2006)

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See detailStealth Distributed Hash Table: A robust and flexible super-peered DHT
Brampton, A.; MacQuire, A.; Rai, I. A. et al

in Proceedings of the 2006 ACM CoNEXT conference (2006)

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See detailPerformance analysis of Stealth DHT with mobile nodes
MacQuire, A.; Brampton, A.; Rai, I. A. et al

in Pervasive Computing and Communications Workshops, 2006. PerCom Workshops 2006. Fourth Annual IEEE International Conference on (2006)

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See detailThe role of landscape design in improving the microclimate in traditional courtyard buildings in hot arid climates
Attia, Shady ULiege

in Proceedings of 23rd International Conference on Passive and Low Energy Architecture - PLEA 2006 (2006)

Arab Islamic landscape design forms a unique source of inspiration for landscape architecture in barren open spaces of the Middle East. Arab Islamic gardens adopted a system marked by perfect ... [more ▼]

Arab Islamic landscape design forms a unique source of inspiration for landscape architecture in barren open spaces of the Middle East. Arab Islamic gardens adopted a system marked by perfect responsiveness to environment. The design of urban landscape and gardens in Arab Islamic culture was similarly guided by the dictation of aridity. The need to provide shade, to prevent dust and to conserve water meant that urban open spaces and gardens were sheltered and enclosed. Alhambra in Moorish Spain and the Al-Suhaymi House in Islamic Cairo are two useful historical references for vernacular Islamic landscape designs. This paper presents an overview of landscape design considerations for the composition of vegetation and water and initial observations of their influence in controlling and improving the microclimate in courtyards buildings as a way of passive cooling in the Middle East region. This paper is a part of a Master’s thesis in the field of passive landscape strategies at Wageningen University. The objective is to identify the comfort improvements potential of successfully-planned and integrated landscape design in traditional courtyard buildings. The layout and plant material of Alhambra, Generalife courts and Al-Suhaymi court in Islamic Cairo are examined and evaluated. This study demonstrates that in arid environments, the landscape planning, the composition of vegetation and water and choice of planting material all have important consequences in creating thermally-pleasant environments. [less ▲]

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See detailSuction and time effects on the behaviour of a reservoir chalk
Priol, Grégoire; De Gennaro, Vincenzo; Delage, Pierre et al

in Van Cotthem, Alain; Charlier, Robert; Thimus, Jean-François (Eds.) EUROCK 2006 - Multiphysics Coupling and Long Term Behaviour in Rock Mechanics (2006)

Oil reservoir rocks contain various immiscible fluids (oil, water and gas) and they are submitted to elevated temperatures in the oilfield. Hence, they exhibit a typical coupled behaviour where ... [more ▼]

Oil reservoir rocks contain various immiscible fluids (oil, water and gas) and they are submitted to elevated temperatures in the oilfield. Hence, they exhibit a typical coupled behaviour where multiphysics and coupled Thermo-Hydro-Mechanical aspects are predominant. This paper presents some results from researches carried out within the PASACHALK 2 European funded collaborative research. In this research dedicated to subsidence problems in the North sea Ekofisk oilfield, the behaviour of a reservoir chalk containing two immiscible fluids (an organic non polar fluid and water) is considered within the framework of the mechanics of unsaturated soils (no temperature effects considered). In order to account for the mechanical coupled effects related to the two pore fluids, the oil-water suction was considered as an independent stress variable. The paper presents some experimental results describing the combined effect of suction and time on the isotropic compression behaviour of the chalk. A viscoelastoplastic constitutive model based on one hand on the Barcelona BBM elastoplastic model for unsaturated and on the other hand on Perzina’s approach of viscous behaviour of soils is also presented and validated against experimental evidence. [less ▲]

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See detailPoro Hypo Plastic analysis of the progressive excavation of the Mol URL connecting Gallery
Desrues, Jacques; Bésuelle, Pierre; Coll, Cécile et al

in Van Cotthem, Alain; Charlier, Robert; Thimus, Jean-Francois (Eds.) EUROCK 2006 - Multiphysics Coupling and Long Term Behaviour in Rock Mechanics (2006)

In the framework of a Euratom research program devoted to Nuclear Waste deposition security assessment, a numerical simulation of the excavation of a gallery in the Boom Clay layer at Mol (Belgium) has ... [more ▼]

In the framework of a Euratom research program devoted to Nuclear Waste deposition security assessment, a numerical simulation of the excavation of a gallery in the Boom Clay layer at Mol (Belgium) has been performed In order to model the progressive excavation and lining installation process, a special sequence of desactivation/activation of sets of elements was elaborated. In particular, this numerical strategy allowed to take into account the fact that, due to the deformation of the massif as the excavation progresses, the material to be excavated once the front has reached a given position into the rock mass cannot be defined a priori, but is resulting of the modelling of the previous phases up to the present one. [less ▲]

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See detailMicrosystem technology for marine measurment
Mowlem, M.; Chavagnac, V; Statham, P et al

in Proc. MTS/IEEE Oceans Conference (2006)

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See detailLe réseau Natura 2000 en Région wallonne : stratégies, réseaux écologiques et mise en oeuvre.
Dufrêne, Marc ULiege

in Lebrun, Philippe (Ed.) Chaire Tractebel-Environnement 2004 - Biodiversité : Etat, enjeux et perspectives (2006)

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See detailRobust structures by joint ductility
Kuhlmann, U.; Jaspart, Jean-Pierre ULiege; Vassart, O. et al

in Proceedings of the IABSE Symposium on Responding to Tomorrows Challenges in Structural Engineering (2006)

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See detailLes livres imprimés en langue française avant 1500 dans les Pays-Bas méridionaux : réflexions sur leur mise en page
Adam, Renaud ULiege

in Van Hemelryck, Tania; Van Hoorebeeck, Céline (Eds.) L'écrit et le manuscrit à la fin du Moyen Age : actes du IIème colloque international du Groupe de recherche sur le moyen français (2006)

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See detailGraeco-Egyptian Alchemy in Byzantium
Mertens, Michèle ULiege

in Magdalino, Paul; Mavroudi, Maria (Eds.) The Occult Sciences in Byzantium (2006)

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See detailLa responsabilité pénale des auteurs de crimes de masse
Fierens, Jacques ULiege

in La responsabilité et la responsabilisation dans la justice pénale (2006)

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See detailNumerical simulation in cold rolling using adiabatic strip model : application to large roll deformation
Stephany, Antoine; Ponthot, Jean-Philippe ULiege; Legrand, N.

in AUSTRIB 06 (2006)

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See detailOpportunities and pitfalls for the bottom-up development of international emission trading
Choquette, V.; Hecq, W.; Lussis, B. et al

in Canadian Chapter of the Environmental Markets Association (Ed.) Proceedings of the First Annual CEMA Meeting and Conference "Pursuing Progress on Climate Change" (2006)

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See detailIdentification of groundwater quality trends in a chalky aquifer threatened by intensive agriculture
Batlle-Aguilar, Jordi; Orban, Philippe ULiege; Dassargues, Alain ULiege et al

in Stauffer, Fr. (Ed.) Quantitative Geology from Multiple Sources: S10 Use of multiple sources in conditioning/calibrating groundwater flow and transport models (2006)

Diffuse groundwater contamination related to agricultural practices is a worldwide environmental problem, particularly the continuous increase in nitrate concentrations. As a response to this threat, the ... [more ▼]

Diffuse groundwater contamination related to agricultural practices is a worldwide environmental problem, particularly the continuous increase in nitrate concentrations. As a response to this threat, the European Union has adopted directives requiring that Member States take measures to reduce agricultural nitrate sources and stating that a “good” status of groundwater is required for all EU members. In order to achieve the environmental objectives for groundwater, the identification and reversal of any significant upward trend in the pollutant concentrations are required. Conclusions are drawn about the evolution of groundwater contamination by nitrates in the following decades with respect to the EU Water directive prescriptions. Measures have to be urgently taken in order to avoid major degradation of groundwater in 10 to 70 years. However, a good groundwater quality status cannot be expected for the 2015 EU Water Framework Directive (WFD). [less ▲]

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See detailA mouse model for polar overdominance ?
Pirottin, Dimitri ULiege; Takeda, Haruko ULiege; Georges, Michel ULiege et al

in Conférences Monod : Epigenetic Perspectives from Multiple Organisms (2006)

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See detailA viscoelastic formulation for finite strains: application to brain soft tissues
Fancello, Eduardo; Ponthot, Jean-Philippe ULiege; Vigneron, Laura et al

in Proceedings of XXVII CILAMCE – Iberian Latin American Congress on Computational Methods in Engineering (2006)

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See detail3D morphological characterization of silicon particles with X Ray tomography
Gregoire, Max; Cnudde, Veerle; Masschaele, B. et al

in Proceedings Belgian Soc Microscopy Meeting (2006)

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See detailSupply chain coordination through contract negotiation
Arda, Yasemin ULiege; Hennet, Jean-Claude

in DC-ECC 06, 44th IEEE Conference on Decision and Control and the European Control Conference, Seville, Spain, 12-15 December 2005 (2005, December 12)

The purpose of the paper is to evaluate the efficiency of different types of contracts between the industrial partners of a supply chain. Such an evaluation is made on the basis of the relationship ... [more ▼]

The purpose of the paper is to evaluate the efficiency of different types of contracts between the industrial partners of a supply chain. Such an evaluation is made on the basis of the relationship between a producer facing a random demand and a supplier with a random lead time. The model combines queuing theory for evaluation aspects and game theory for decisional purposes. [less ▲]

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See detailContribution to an adapted physiotherapy in the hyperlaxity syndromes
Kaux, Jean-François ULiege; Foidart-Dessalle, Marguerite ULiege; Toussaint, Geoffrey ULiege et al

in First Annual Congress (of the new style) of the Royal Belgian Society of Physical and Rehabilitation Medicine (RBSPRM) (2005, December 02)

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