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See detailCaractérisation des propriétés hydrauliques de sols caillouteux
Pichault, Mathieu; Garré, Sarah ULg

Conference (2015, November 24)

La détermination des propriétés hydrauliques du sol est une préoccupation majeure dans différents domaines d’études. Bien que les sols caillouteux soient répandus dans le monde entier, la plupart des ... [more ▼]

La détermination des propriétés hydrauliques du sol est une préoccupation majeure dans différents domaines d’études. Bien que les sols caillouteux soient répandus dans le monde entier, la plupart des études ne caractérisent que la fraction fine des sols, si bien que la littérature décrivant l’impact des cailloux sur les propriétés hydrauliques du sol est encore rare. Certains modèles ayant pour but de caractériser ces propriétés hydrauliques reposent sur la même hypothèse simplificatrice, qui stipule que le seul effet des cailloux est de diminuer le volume disponible pour l’écoulement de l’eau. L’objectif de cette étude est de vérifier cette hypothèse et, le cas échéant, d’identifier les facteurs déterminant ou non son respect. L’effet des cailloux sur la conductivité hydraulique à saturation effective du sol a été testé au moyen d’expériences de laboratoire et d’expériences numériques, impliquant différentes quantités et types de fragments grossiers. Nos résultats montrent que plusieurs facteurs supplémentaires, non considérés par ces modèles, peuvent affecter significativement la conductivité hydraulique à saturation. D’une part, la forme et la taille des inclusions altèrent de manière substantielle la conductivité hydraulique. D’autre part, la présence de cailloux peut contrer -voire dominer- les effets liés à la réduction du volume disponible pour l’écoulement en conditions saturantes. Nous attribuons cela à la création de macropores à l’interface entre la terre fine et les cailloux. [less ▲]

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See detailCurrent issues in the processing of Ti alloy Ti6Al4V by laser additive manufacturing techniques
Mertens, Anne ULg

Learning material (2015)

This powerpoint presentation was used as teaching material in a seminar given as part of the course “Advanced Manufacturing technologies” at Université catholique de Louvain. It outlines important current ... [more ▼]

This powerpoint presentation was used as teaching material in a seminar given as part of the course “Advanced Manufacturing technologies” at Université catholique de Louvain. It outlines important current issues in the development of additive technologies for the processing of metallic materials in general, and particularly of Ti alloy Ti-6Al-4V. This includes issues related to the dimensional accuracy of the produced components, as well as the control of their microstructures and usage properties. [less ▲]

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See detailMultimedia-enhanced learning productions - A typology based on instructional use and needed resources
Van de Poël, Jean-François ULg; Martin, Pierre; Verpoorten, Dominique ULg

Poster (2015, November 24)

This poster introduces a typology of educational multimedia objects stemming from an analysis of 400 audiovisual items produced by IFRES-eCampus, the staff development unit of the University of Liège ... [more ▼]

This poster introduces a typology of educational multimedia objects stemming from an analysis of 400 audiovisual items produced by IFRES-eCampus, the staff development unit of the University of Liège (Belgium). The classification of the multimedia productions is based on their instructional use and is enriched by additional qualifications in terms of time investment by the faculty and the Teaching and Learning center. [less ▲]

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See detailDes processus de (dé)subjectivation dans l’activisme associatif: enquête ethnographique au sein du mouvement belge "Inclusion"
Borotto, Jessica ULg; Duysens, Fanny ULg

Conference (2015, November 24)

L’activisme associatif dans le domaine de la déficience intellectuelle a connu des évolutions significatives depuis quelques décennies. Suivant les principes fondateurs de la Convention des Nations Unies ... [more ▼]

L’activisme associatif dans le domaine de la déficience intellectuelle a connu des évolutions significatives depuis quelques décennies. Suivant les principes fondateurs de la Convention des Nations Unies relative aux droits des personnes handicapées (2006), les associations de personnes concernées revendiquent leur légitimité à s’impliquer activement dans la gouvernance des questions qui les concernent. Cette communication porte sur les manières dont de jeunes adultes dits porteurs de déficience intellectuelle sont sujets à des processus de subjectivation et de désubjectivation au travers de discours et pratiques associatives qui revendiquent leur pleine inclusion et participation à la société. Croisant nos recherches respectives en sciences sociales et en philosophie politique, nous mobilisons une approche du sujet observé en situation (Agier, 2012) en vue d'envisager des « scènes de subjectivation » formelles et informelles dans le cadre d'une association belge francophone, en ce qu’elles nous semblent effectivement donner à voir de telles dynamiques de (dé)subjectivation par lesquelles se (re)construisent constamment les sujets porteurs de déficience intellectuelle et leur capacité d’agir. [less ▲]

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See detailPanorama du Nouveau Cinéma Allemand: entre esthétique et politique.
Hamers, Jérémy ULg

Scientific conference (2015, November 23)

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See detailThe mysterious droplet birth in a microfluidic cross junction
Van Loo, Stéphanie ULg; Gilet, Tristan ULg

Conference (2015, November 23)

In microfluidics flow focusing is widely used to produce water-in-oil droplets in microchannels at high frequency. Nevertheless, the scaling laws associated to droplet length, speed and frequency could ... [more ▼]

In microfluidics flow focusing is widely used to produce water-in-oil droplets in microchannels at high frequency. Nevertheless, the scaling laws associated to droplet length, speed and frequency could not be identified yet, owing to the large number of parameters involved (incl. complex geometry). We here present an experimental study of droplet formation in a microfluidic cross-junction with a minimum number of geometrical parameters. We mostly focus on the dripping regime. The formation sequence is decomposed in two steps, inflation and squeezing, that vary differently according to both water and oil flow rates. These variations reveal several insights about the fluid flows in both phases. From there we infer the scaling law that relates droplet volume and frequency to the Capillary number associated to each inlet flow rate. This law involves a minimum of fitting parameters. We finally discuss the influence of inlet control (flow rate vs. pressure) and surfactants on the formation dynamics. [less ▲]

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See detailContinuer à faire travailler la raison
Durand, Pascal ULg; Bourton, William

Article for general public (2015)

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See detailPrimary osteosarcoma of the breast : a case report
Crevecoeur, Julie; Jossa, Véronique; GENNIGENS, Christine ULg et al

in Clinical Case Reports (2015)

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See detailWho are my Visitors and Where do They Come From? An Analysis Based on Foursquare Check-ins and Place-based Semantics.
Hallot, Pierre ULg; Stewart, Kathleen; Billen, Roland ULg

in Eurographics Workshop on Urban Data Modelling and Visualisation 2015 (2015, November 23)

Activity recommendation systems aims at providing relevant information depending on targeted users' groups. For instance in a city, it makes sense to differentiate local residents from tourists. This ... [more ▼]

Activity recommendation systems aims at providing relevant information depending on targeted users' groups. For instance in a city, it makes sense to differentiate local residents from tourists. This research investigates to what extent the anonymized data collected from social networks can be used as a basis for making activity recommendations associated with local residents versus tourists when visiting a public place, such as a museum or gallery. Using rules based on the spatial, temporal and semantics of visited places, we are able to infer if a user is likely to be local or a tourist, based on anonymous sample Foursquare data and place-based semantics retrieved using Google Places API. Using semantics of visited places, it becomes possible to infer additional information about a user based on their movements over space and time. Depending on the kind and frequency of visited places, inferences about the aim of a visit to a location are possible. This analysis could provide information to users in the form of recommendations based on their movements while travelling around an area. This study has been performed using Foursquare check-ins for visitors to the Art Institute of Chicago between March 2010 and January 2011. [less ▲]

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See detailNeuropathies périphériques (intro)
WANG, François-Charles ULg

Learning material (2015)

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See detailPIV-based estimation of unsteady loads on a flat plate at high angle of attack using momentum equation approaches
Guissart, Amandine ULg; Bernal, Luis; Dimitriadis, Grigorios ULg et al

Conference (2015, November 23)

The direct measurement of loads with force balance can become challenging when the forces are small or when the body is moving. An alternative is the use of Particle Image Velocimetry (PIV) velocity ... [more ▼]

The direct measurement of loads with force balance can become challenging when the forces are small or when the body is moving. An alternative is the use of Particle Image Velocimetry (PIV) velocity fields to indirectly obtain the aerodynamic coefficients. This can be done by the use of control volume approaches which lead to the integration of velocities, and other fields deriving from them, on a contour surrounding the studied body and its supporting surface. This work exposes and discusses results obtained with two different methods: the direct use of the integral formulation of the Navier-Stokes equations and the so-called Noca's method. The latter is a reformulation of the integral Navier-Stokes equations in order to get rid of the pressure. Results obtained using the two methods are compared and the influence of different parameters is discussed. The methods are applied to PIV data obtained from water channel testing for the flow around a 16:1 plate. Two cases are considered: a static plate at high angle of attack and a large amplitude imposed pitching motion. Two-dimensional PIV velocity fields are used to compute the aerodynamic forces. Direct measurements of dynamic loads are also carried out in order to assess the quality of the indirectly calculated coefficients. [less ▲]

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See detailSous le regard de Zeus Horios. Borner la terre en pays grec.
Lebreton, Sylvain ULg

Conference (2015, November 23)

La diversité des sources relatives aux horoi – limites, frontières, bornes – dans le monde grec antique est sans doute révélatrice de l'importance de la délimitation et du bornage de la terre aux yeux des ... [more ▼]

La diversité des sources relatives aux horoi – limites, frontières, bornes – dans le monde grec antique est sans doute révélatrice de l'importance de la délimitation et du bornage de la terre aux yeux des anciens Grecs. C'est la retranscription de cet enjeu multiforme – tant symbolique que matériel, politique qu'économique – dans le champ du polythéisme qui fera l'objet de cette présentation. Si l'on se borne aux puissances divines explicitement invoquées comme garantes de ces horoi, on constate qu'au sein d'un ensemble où l'on rencontre Apollon, Athéna, Héra, émerge incontestablement la figure du Zeus Horios. La mise en contexte et en série des données relatives au culte de ce dernier, ainsi que l'examen des logiques théologiques qui les soutiennent et les procédés rituels qui les accompagnent, formeront par conséquent le cœur de cette étude. Au-delà des possibilités d'expérimentation sur le fonctionnement du polythéisme hellénique qu'elle offre, cette étude de cas permettra, on l'espère, d'éclairer la manière grecque d'investir symboliquement la terre, en l'occurrence de justifier sur le plan religieux les délimitations appliquées à celle-ci. [less ▲]

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Peer Reviewed
See detailLa subjectivité au dehors : du Saint Genet à la Conférence de Rome
Caeymaex, Florence ULg

Conference (2015, November 23)

Detailed reference viewed: 7 (0 ULg)
See detailPegylated Polyplexes Based On HDAC5 siRNA And Aliphatic Polycarbonate Polymers For An Anticancer Therapy
Frère, Antoine ULg; Baroni, Alexandra; Peulen, Olivier ULg et al

Poster (2015, November 23)

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See detailDiachronic lexical semantics in Ancient Egyptian–Coptic: The Egyptianness of basic vocabulary in Coptic
Grossman, Eitan; Polis, Stéphane ULg

Conference (2015, November 21)

Coptic, as it comes down to us in written texts, is massively influenced by Greek in the domain of lexicon. The Leipzig-Berlin Dictionary and Database of Greek Loanwords in Coptic project has already ... [more ▼]

Coptic, as it comes down to us in written texts, is massively influenced by Greek in the domain of lexicon. The Leipzig-Berlin Dictionary and Database of Greek Loanwords in Coptic project has already recorded c. 5000 loan word types and c. 60.000 loan word tokens. On this basis, linguists, philologists, and historians often make assumptions about the nature and extent of bilingualism. Some linguists have even proposed that Coptic is a case of ‘code-mixing’ of Egyptian and Greek, which assumes extensive bilingualism among Egyptians in Late Antiquity. In this paper, we tackle this question from another angle, by determining the extent to which Greek influenced Coptic in terms of its *basic vocabulary*. It may be that we can learn more about bilingualism in Late Antique Egypt this way, since overall lexical borrowing need not correlate with lexical borrowing in the domain of basic vocabulary. As a (significant) side effect of this study, we can also describe the rate of replacement of basic vocabulary in Egyptian-Coptic across its 4000 years of attestation, as well as the semantic domains and periods in which lexical replacement was faster or slower. [less ▲]

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See detailLa sexualité au fil des âges: l'adolescence
Glowacz, Fabienne ULg; Loumaye, Sylvie

Conference (2015, November 21)

Detailed reference viewed: 15 (2 ULg)