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See detailL'acte d'imagination: Approches phénoménologiques
Hagelstein, Maud ULg; Hervy, Alievtina ULg; Leclercq, Bruno ULg

in Bulletin d'Analyse Phénoménologique (2017), 13 (2017)(2),

Du 25 au 29 avril 2016, le centre « Phénoménologies » de l’Université de Liège a tenu la dixième édition de son séminaire international de recherche en phénoménologie. Autour du thème général L’Acte ... [more ▼]

Du 25 au 29 avril 2016, le centre « Phénoménologies » de l’Université de Liège a tenu la dixième édition de son séminaire international de recherche en phénoménologie. Autour du thème général L’Acte d’imagination : approches phénoménologiques, vingt-huit chercheurs issus de vingt-deux universités différentes se sont rencontrés pendant une semaine entière pour discuter dans le détail plusieurs aspects de la problématique. Le volume actuel reprend la plupart des communications qui avaient été présentées durant cette semaine, communications ici retravaillées pour intégrer les propositions qu’avaient suscitées leur présentation originale et plus généralement l’ensemble des débats très riches qu’avait permis la constitution ponctuelle d’une vraie communauté philosophique. Kant avait notoirement fait de la faculté d’imagination un intermédiaire (un peu indécis) entre la réceptivité de l’expérience sensible et la spontanéité de l’entendement. En s’installant plus nettement sur le terrain de la psychologie descriptive et en abandonnant le vocabulaire des « facultés » pour lui préférer celui des actes mentaux ou des fonctions psychiques, les brentaniens s’étaient donné les moyens d’analyser plus finement les composantes de l’acte d’imagination (mode de visée, contenu réel, contenu intentionnel...), les rapports de fondation qu’il entretient avec d’autres types d’actes, et par là le rôle qu’il peut jouer dans les fonctions cognitives ou évaluatives de l’esprit. C’est de cet acte d’imagination, envisagé par la phénoménologie en tant que psychologie descriptive, qu’il sera ici question. [less ▲]

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See detailEU competition law
Van Cleynenbreugel, Pieter ULg

in Ugirashebuja, Emmanuel; Ruhangisa, John Eures; Ottervanger, Tom (Eds.) et al East African Community Law: institutional, substantive and comparative EU aspects (2017)

This chapter provides an overview of the principles of EU competition law, its relationship to EU internal market law and the similarities and differences between this body of law and East African ... [more ▼]

This chapter provides an overview of the principles of EU competition law, its relationship to EU internal market law and the similarities and differences between this body of law and East African competition law. [less ▲]

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See detailLocal Identification of Voltage Instability from Load Tap Changer Response
Weckesser, Johannes ULg; Papangelis, Lampros ULg; Vournas, Costas et al

in Sustainable Energy, Grids and Networks (2017)

This paper presents a local long-term voltage instability monitoring method, which is suitable for on-line applications. The proposed extended-time Local Identification of Voltage Emergency Situations ... [more ▼]

This paper presents a local long-term voltage instability monitoring method, which is suitable for on-line applications. The proposed extended-time Local Identification of Voltage Emergency Situations (eLIVES) method is a significantly modified version of the previously presented LIVES method. The new method is not bound to assessing system response over a predefined LTC tapping period. This allows handling LTCs with variable delays, as well as events taking place during the tapping sequence impacting the distribution voltages. For that purpose, eLIVES applies recursive least square fitting to acquired distribution voltage measurements and a new set of rules to detect a voltage emergency situation. The effectiveness of the eLIVES method is presented on the IEEE Nordic test system for voltage stability and security assessment. [less ▲]

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See detailExperimental Correction of Radiation Patterns Between Electromagnetic Environments
Spirlet, Maxime ULg; Geuzaine; Beauvois

in IEEE Transactions on Antennas & Propagation (2017), 65(03),

This manuscript presents an experimental method to estimate a radiation pattern obtained in a particular echoic environment (for example from in-situ measurements) as if measurements were performed in a ... [more ▼]

This manuscript presents an experimental method to estimate a radiation pattern obtained in a particular echoic environment (for example from in-situ measurements) as if measurements were performed in a given anechoic chamber. The correction is achieved using some reference measurements collected both in echoic and anechoic environments. An angular transfer function is estimated from these two sets of measurements and deconvolved from the measured radiation pattern to be corrected. [less ▲]

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See detailBetween practices and belongings: intersectional stories of migrant women around food
Mescoli, Elsa ULg

Conference (2017, March)

Short abstract Based on ethnographic fieldwork conducted among Moroccan women living in Milan hinterland in Italy, this paper aims at exploring the negotiated ways of performing both cultural and social ... [more ▼]

Short abstract Based on ethnographic fieldwork conducted among Moroccan women living in Milan hinterland in Italy, this paper aims at exploring the negotiated ways of performing both cultural and social belongings through food and at pointing out how these two dimensions can diverge or overlap in practice. Long abstract Migration constitutes for human beings an opportunity – among others – to develop a reflexive gaze upon one’s own habits (Rodier 2010), food habits in the case under study. In fact, not only changes that may occur in the ways of eating, cooking and supplying of produces, but also new relationships push individuals to question their everyday practices, which are associated with specific meanings. These meanings are socially and culturally oriented and performative, since they permit to state belongings as well as to take part to differently defined groups. In order to study these dynamics, I will present some ethnographic data collected during a research among Moroccan women living in Milan hinterland in Italy, mainly focusing on the history of two of them. The description of food practices, embedded in the narration of the migration experience and its consequences, which in its turn interacts with contextual discourses around immigrants and cultural diversity, reveals unexpected strategies to take social and cultural positionings within the collectivity. The theoretical framework upon which my analysis relies consists of a praxeological approach to subjectivation (Warnier 2001) combined with the consideration of the multi-dimensionality of the self which is derived from the intersectional perspective on identity (Crenshaw 1989; Anthias 2002; Yuval-Davis 2006). Through concrete practices involving food, individuals – women in this case – define their self as a layered complex of belongings, and they do that at both social and cultural level; thus proving how these two dimensions can diverge or overlap. [less ▲]

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See detailRendre compte de la société d’aujourd’hui
Quoilin, Cécile; Postula, Jean-Louis ULg

in Cahiers de muséologie - Dans la marge (2017)

Founded a century ago as a classical museum of regional ethnography, the Museum of Walloon Life is now facing the challenge of an essential update and the redefinition of its museum project. For about ten ... [more ▼]

Founded a century ago as a classical museum of regional ethnography, the Museum of Walloon Life is now facing the challenge of an essential update and the redefinition of its museum project. For about ten years, the choice of the approach known as "society museum" on the occasion of the total renovation of the building, led to an in-depth review of the acquisition and exhibition policies but also of the nature of field research and relationships with its different audiences. This article shows the practical consequences of the implementation of this new model, which now places the man rather than the collections at the center of discourse, on all museum functions. One of its fundamental objectives is to allow the development within the Museum of the sometimes complex issues of contemporary society. [less ▲]

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See detailEvaluation of different in vitro dissolution tests based on level A in vitro–in vivo correlations for fenofibrate self-emulsifying lipid-based formulations
Pestieau, Aude ULg; Lebrun, Sonia; Cahay, Bernard et al

in European Journal of Pharmaceutics & Biopharmaceutics (2017), 112

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See detailEntandrophragma cylindricum (Sprague) Sprague (Meliaceae), une espèce ligneuse concurrentielle en Afrique centrale (synthèse bibliographique)
Tabi Eckebil, Paule ULg; Verheggen, François ULg; Doucet, Jean-Louis ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment (2017), 21(1), 80-97

Introduction. De nos jours, la gestion des ressources forestières ne se focalise plus sur l’exploitation exclusive du bois d’oeuvre, mais prend également en considération les produits forestiers non ... [more ▼]

Introduction. De nos jours, la gestion des ressources forestières ne se focalise plus sur l’exploitation exclusive du bois d’oeuvre, mais prend également en considération les produits forestiers non ligneux. Entandrophragma cylindricum (Sprague) Sprague, de son nom commercial « sapelli/sapele », de la famille des Meliaceae, illustre parfaitement cette situation. Le présent article fait un état de l’art des connaissances concernant E. cylindricum et présente quelques informations sur la chenille qui lui est inféodée. Littérature. Le sapelli est une des espèces ligneuses les plus exploitées d’Afrique centrale pour son bois d’oeuvre. Il est répandu dans la forêt dense humide semi-caducifoliée du domaine guinéo-congolais. C’est une espèce semi-héliophile, son mode de dispersion est anémochore et sa phénologie est régulière. Selon la sylviculture appliquée, sa croissance en diamètre peut atteindre jusque 0,82 cm par an. Cette essence est également l’hôte d’une espèce de chenille comestible riche en protéines, I. oyemensis Rougeot. Fortement appréciée par les populations locales, cette chenille fait également l’objet d’un commerce régional et international. Enfin, l’écorce du sapelli est reconnue pour son intérêt ethnobotanique, particulièrement en médecine traditionnelle. Conclusions. Les informations tirées de la littérature ont permis de mettre en évidence certaines lacunes relatives à l’écologie et au mode de reproduction de cette espèce et, ceci, en dépit de son importance pour le commerce du bois. De plus, les inconnues quant à la productivité et la saisonnalité des chenilles d’Imbrasia oyemensis sur cet arbre nécessitent de développer des recherches complémentaires pour garantir la durabilité de l’exploitation simultanée de la ressource ligneuse et non ligneuse et pour proposer des modes de gestion concertés entre exploitants industriels et populations locales. [less ▲]

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See detailOrigin of the Counterintuitive Dynamic Charge in the Transition Metal Dichalcogenides
Pike, Nicholas ULg; Dewandre, Antoine ULg; Van Troeye, Benoit et al

Scientific conference (2017, March)

Our recent first-principles calculations of the electronic and vibrational properties of the hexagonal transition-metal dichalcogenides reveal that their Born effective charges display a counterintuitive ... [more ▼]

Our recent first-principles calculations of the electronic and vibrational properties of the hexagonal transition-metal dichalcogenides reveal that their Born effective charges display a counterintuitive sign when compared to most other materials or transition-metal dichalcogenides with trigonal symmetry. We determine the origin of this counterintuitive sign by calculating the electronic, vibrational, and optical properties of these systems. We show that the sign of the Born effective charge is directly related to the electric field response of the electronic density, and, in turn, to the bonding characteristics of the material.There is a filled anti-bonding molecular orbital at the Fermi level, which is localized on the transition-metal atom and corresponds to a form of solid state $\pi$ back-bonding in these material. We propose a method of determining if other materials display a similar counterintuitive sign, based on their bonding characteristics, and propose experiments which could measure the sign of the Born effective charge using different spectroscopies. [less ▲]

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See detailFlux penetration in a superconducting film partially capped with a conducting layer
Brisbois, Jérémy ULg; Gladilin, V. N.; Tempere, J. et al

in Physical Review B (2017), 95

The influence of a conducting layer on the magnetic flux penetration in a superconducting Nb film is studied by magneto-optical imaging. The metallic layer partially covering the superconductor provides ... [more ▼]

The influence of a conducting layer on the magnetic flux penetration in a superconducting Nb film is studied by magneto-optical imaging. The metallic layer partially covering the superconductor provides an additional velocity-dependent damping mechanism for the flux motion that helps protecting the superconducting state when thermomagnetic instabilities develop. If the flux advances with a velocity slower than w = 2/µ0σt, where σ is the cap layer conductivity and t is its thickness, the flux penetration remains unaffected, whereas for incoming flux moving faster than w, the metallic layer becomes an active screening shield. When the metallic layer is replaced by a perfect conductor, it is expected that the flux braking effect will occur for all flux velocities. We demonstrate this effect by investigating Nb samples with a thickness step. Some of the observed features, namely the deflection and the branching of the flux trajectories at the border of the thick centre, as well as the favoured flux penetration at the indentation, are reproduced by time-dependent Ginzburg-Landau simulations. [less ▲]

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See detailDe l’information (légale) à l'action (illégale) : Tests génétiques et technologies de pouvoir
Fallon, Catherine ULg

in Revue de la Faculté de Droit de l'Université de Liège (2017)

sur la base de l’étude des transformations technologiques récentes en matière de tests génétiques prénataux, ce texte propose une analyse comparée de l’évolution de ces dispositifs et des pratiques en ... [more ▼]

sur la base de l’étude des transformations technologiques récentes en matière de tests génétiques prénataux, ce texte propose une analyse comparée de l’évolution de ces dispositifs et des pratiques en Belgique et en Argentine. Les mêmes techniques et les mêmes connaissances sont disponibles dans les deux pays, que ce soit en matière de dépistage prénatal ou d’avortement médicamenteux, mais les conditions normatives, économiques, sociales et culturelles sont très différentes dans les deux pays. La prise en charge par les programmes publics médicaux assure un suivi « émancipateur » aux couples belges pendant la grossesse. En Argentine, où le recours à l'avortement légal est très restrictif, le dispositif public de dépistage prénatal reste inachevé. Dans les deux pays, il est possible de comparer comment ces dispositifs de « biopolitique » sont transformés par les innovations technologiques au niveau des réseaux de savoir et des relations de pouvoir entre l’état, le corps médical et les familles. Dans un tel cadre, la question de l’illégalité est moins centrale que l’étude de la normativité émergente [less ▲]

See detailDe l’intérêt des études de cas : l’exemple du procès pour viol de Marie Barbe Blavier
Drécourt, Aurore ULg

Scientific conference (2017, March)

Le viol de Marie Barbe Blavier en 1768 n’est pas un évènement singulier sous l’Ancien Régime. Ce viol, qui a débouché sur un procès, illustre toutefois ce qu’une étude de cas peut apporter au travail de ... [more ▼]

Le viol de Marie Barbe Blavier en 1768 n’est pas un évènement singulier sous l’Ancien Régime. Ce viol, qui a débouché sur un procès, illustre toutefois ce qu’une étude de cas peut apporter au travail de l’historien. Cette affaire permet au chercheur de mieux appréhender des processus de conciliations souvent peu documentés ainsi qu’une manière de penser différente de celle de notre société actuelle. [less ▲]

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See detailMicro-mechanical testing of magnesium based composites reinforced by carbon fibers manufactured by friction stir processing
Simar, Aude; Ryelandt, Sophie; Delannay, Francis et al

Conference (2017, February 28)

Short C fibres–Mg matrix (AZ91D) composites have been produced by friction stir processing sandwiches made of a layer of C fabric stacked between two sheets of Mg alloy. The process parameters have been ... [more ▼]

Short C fibres–Mg matrix (AZ91D) composites have been produced by friction stir processing sandwiches made of a layer of C fabric stacked between two sheets of Mg alloy. The process parameters have been optimized to ensure a good fiber distribution. 3D X-ray tomography reveals that the fibers orient like onion rings. Thermal treatments have allowed to modify the flow stress level of the matrix material. Tensile testing inside the scanning electron microscope have revealed the decohesion at the fiber/matrix interface if the fibers are preferentially oriented perpendicularly to the loading direction. Modelling allows to estimate the stress needed to initiate this decohesion is about 250 MPa, i.e. appearing early in heat treated samples. To compare with different loading conditions, micro-compression and instrumented micro-indentation testing have also been performed. The consequence of the loading path on the decohesion is discussed. [less ▲]

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See detailOptimized integration of heat storage into district heating networks fed by a biomass CHP plant.
Sartor, Kevin ULg

in Proceedings (2017, February 28)

Biomass Combined Heat and Power (CHP) plants connected to district heating networks (DHN) are recognized as a very good opportunity to increase the share of renewable sources into energy systems. However ... [more ▼]

Biomass Combined Heat and Power (CHP) plants connected to district heating networks (DHN) are recognized as a very good opportunity to increase the share of renewable sources into energy systems. However, as CHP plants are not optimized for electricity production, their operation is profitable only if a sufficient heat demand is available throughout the year. On the other hand, these plants often work for baseline operation and back-up boilers are used to supply the peak demand. To extend the use of the CHP plants and reduce costs, conventional fuel use and emissions, it is proposed to study the feasibility of using additional high temperature heat storage as retrofit of an existing CHP plant. This work is based on a simple and effective methodology that provides accurate estimations of economic, environmental and energetic performances of CHP plants connected to district heating networks. The DHN of the University in Liège (Belgium) is used as an application framework to demonstrate the effectiveness of the selected approach. The potential energy and pollutant emissions savings and resulting energy costs are estimated and the current policy limitations will be discussed. [less ▲]

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See detailLiens entre mathématiques et jeux
Bair, Jacques ULg

E-print/Working paper (2017)

Le présent travail se compose de plusieurs parties. En premier lieu, nous définissons le concept général de jeu et présentons quelques mathématiciens célèbres, de toutes époques, qui étaient (ou sont ... [more ▼]

Le présent travail se compose de plusieurs parties. En premier lieu, nous définissons le concept général de jeu et présentons quelques mathématiciens célèbres, de toutes époques, qui étaient (ou sont encore) des adeptes de jeux mathématiques. Ensuite, nous établissons une typologie des jeux mathématiques. Une deuxième partie est consacrée à l’intervention des jeux dans l’enseignement des mathématiques. Nous donnons divers avantages des activités ludiques en classe, mais également des objections relatives à leur usage à des fins pédagogiques. Nous nous demandons aussi comment sélectionner un jeu pour des élèves et exhibons des exemples concrets de jeux exploitables en classe. Ce travail se termine par une bibliographie sur le sujet, ainsi que par une annexe composée de diapositives présentées lors d’un exposé réalisé à l’Université du Luxembourg dans le cadre de la Formation Pédagogique (FOPED) : nous y décrivons brièvement différentes épreuves ludiques proposées ces dernières années à des élèves de l’enseignement secondaire en France, Belgique et au Luxembourg. [less ▲]

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See detailThermal comfort models for net zero energy buildings in hot climates
Belkhouane, Hamza ULg; Hensen, Jan; Attia, Shady ULg

in Second International Conference on Energy and Indoor Environment for Hot Climates (2017, February 26)

Several energy efficiency concepts and comfort models emerged in the last 15 years seeking high performance buildings and optimal occupant comfort conditions. The aim of high performance buildings is to ... [more ▼]

Several energy efficiency concepts and comfort models emerged in the last 15 years seeking high performance buildings and optimal occupant comfort conditions. The aim of high performance buildings is to reduce the carbon footprint and energy consumption of buildings while maintain a fit to purpose comfort. In this context, this work raises the question of fir to purpose comfort models that can from one side reduce the energy consumption of typical office buildings in hot climates (cooling dominated) while on the other side ensuring indoor thermal comfort. Indeed, studies that address energy efficiency are many, however it is in most cases applied to temperate or cold climates and barely explored for hot climates. The objective of this paper is to (1) combine several comfort models for a net zero energy building in hot climates, (2) select the comfort model that shows the optimal comfort quality of indoor environment and (3) compare the building's annual energy consumption for each used comfort model. To respond to our research problems, a methodology has been established, which goes through several phases. First identifying the different comfort models comfortable to use in hot climates (ISO 7730 / EN 15251 / adaptive ASHRAE / Givoni), secondly selecting a typical validated office building model as a reference building and finally selecting representative cities in the Mediterranean arid and hot climate (Algiers / Sicily / Cairo / Dubai). The study used building performance simulation to generate the different results on the energy consumption and the operative temperatures of the different models of comfort in each city. The paper ultimately identifies the fit to purpose comfort models for a medium size net zero energy office building in hot climates. The paper presents a comparison that can help building professional to identify the most appropriate comfort model that allows optimizing energy consumption, ensuring thermal comfort for robust perfromnce of net zero energy buildings in hot climates. [less ▲]

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See detailI Am Very Sorry Sir! Breaking Bad News to Customers
Delcourt, Cécile ULg; Gremler, Dwayne; Greer, Dominique

Scientific conference (2017, February 25)

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See detailGenscript meeting invited by GIGA viral vector platform
Golestan Hashemi, Farahnaz Sadat ULg

Learning material (2017)

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See detailMethylglyoxal-induced carbonyl stress: perspectives of a new anti-GBM therapy
Nokin, Marie-Julie ULg

Conference (2017, February 24)

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