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See detailSalmonella infections in young children due to turtle contamination
MATHY, F.; CHIARADIA, F.; MASTOURI, M. et al

Conference (2013, March)

Detailed reference viewed: 22 (1 ULg)
See detailDesign Synthesis and Use of Polypeptides as Biosynthetic Nanomachines
Asano, Marie ULg

Conference (2013, March)

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See detailEXAP 15254-5 Extrapolation of height above 4m in partition of metal sandwich panels
Dumont, Fabien ULg; Wellens, Eric ULg

Conference (2013, March)

When testing the fire resistance of metal sandwich panels, the annex B of EN 15254-5 gives rules for the consequently allowed extension of span length. The processing of these rules requires that specific ... [more ▼]

When testing the fire resistance of metal sandwich panels, the annex B of EN 15254-5 gives rules for the consequently allowed extension of span length. The processing of these rules requires that specific measurements are carried out on joints between panels during the test. When a set of tests has been realised on panels of different thicknesses, but no measurement has been carried out on joints during these tests, the relevance of the following processing is analysed : 1. redo only the tests on panels of minimum and maximum thicknesses and carry out the measurement on joints ; 2. deduce the extended height allowed for these tests ; 3. interpolate these results to panels of intermediate thicknesses. [less ▲]

Detailed reference viewed: 151 (5 ULg)
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See detailControlled and automatic memory retrieval in Alzheimer's disease
Bastin, Christine ULg

Conference (2013, February 28)

Detailed reference viewed: 26 (1 ULg)
See detailEvaluations à court et à long terme de la qualité vocale après microchirurgie cordale
Finck, Camille ULg

Conference (2013, February 27)

comment évaluer la qualité vocale après microchirurgie cordale? L'évaluation est à la fois subjective et objective. description des variables mesurables, des outils d'analyse vocale et des méthodes ... [more ▼]

comment évaluer la qualité vocale après microchirurgie cordale? L'évaluation est à la fois subjective et objective. description des variables mesurables, des outils d'analyse vocale et des méthodes statitiques utilisées [less ▲]

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See detailMetal homeostasis in plants: what can we learn from zinc hyperaccumulators?
Hanikenne, Marc ULg

Conference (2013, February 26)

Detailed reference viewed: 13 (1 ULg)
See detailStochastic Dimension Reduction of Multi Physics Systems through Measure Transformation
Phipps, Eric; Constantine, Paul; Red-Horse, John et al

Conference (2013, February 26)

Uncertainty quantification of multiphysics systems represents numerous mathematical and computational challenges. Indeed, uncertainties that arise in each physics in a fully coupled system must be ... [more ▼]

Uncertainty quantification of multiphysics systems represents numerous mathematical and computational challenges. Indeed, uncertainties that arise in each physics in a fully coupled system must be captured throughout the whole system, the so-called curse of dimensionality. We present techniques for mitigating the curse of dimensionality in network-coupled multiphysics systems by using the structure of the network to transform uncertainty representations as they pass between components. Examples from the simulation of nuclear power plants will be discussed. [less ▲]

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See detailLes problèmes cutanés liés aux médicaments
GADISSEUR, Romy ULg

Conference (2013, February 25)

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See detailLes candidats d’ouverture sur les listes électorales au scrutin communal de 2012
Dodeigne, Jérémy ULg

Conference (2013, February 25)

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See detailDébats européens sur les formes de la vie marine au Siècle des Lumières
Vandersmissen, Jan ULg

Conference (2013, February 22)

Detailed reference viewed: 26 (1 ULg)
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See detailLe tutorat: pour un accompagnement réflexif et interactif centré sur l'étudiant / Développer des compétences de tuteur dans un modèle socioconstructiviste et interactif
Dury, Cécile ULg

Conference (2013, February 22)

Public: 300 personnes de tout secteur d'activité des établissements sanitaires et sociaux Présentation de deux interventions ayant pour objectifs: - Une présentation interactive (60')des grands concepts ... [more ▼]

Public: 300 personnes de tout secteur d'activité des établissements sanitaires et sociaux Présentation de deux interventions ayant pour objectifs: - Une présentation interactive (60')des grands concepts liés à l'agir avec compétences et à l'accompagnement au développement de compétences dans un modèle socioconstructiviste et interactif - une présentation pour faire émerger les "nouvelles" compétences du tuteur en stage. A partir d'une vidéo pour amener à l'analyse de la pratique, la pratique réflexive, l'entretien et le questionnement. Un état des lieux au niveau européen est présenté et les perspectives associées à cette problématique sont discutées. [less ▲]

Detailed reference viewed: 200 (9 ULg)
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See detailTraitement perceptif et phonologique atypique dans le syndrome de Williams.
Majerus, Steve ULg

Conference (2013, February 22)

Detailed reference viewed: 12 (0 ULg)
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See detailFemina chez Sénèque : apports et limites de la statistique textuelle
Vandersmissen, Marc ULg

Conference (2013, February 21)

Detailed reference viewed: 43 (7 ULg)
See detailAllergie alimentaire de l'enfant
GADISSEUR, Romy ULg

Conference (2013, February 21)

Detailed reference viewed: 7 (0 ULg)
See detailVideo multitracking and study of the collective behaviour in tadpoles
Delcourt, Johann ULg

Conference (2013, February 21)

Detailed reference viewed: 35 (9 ULg)
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See detailLes nouveaux traitements du diabète de type 2
RADERMECKER, Régis ULg

Conference (2013, February 21)

Detailed reference viewed: 25 (2 ULg)
See detailParticipation à la Table ronde autour du livre de Denis Seron Ce que voir veut dire
Gyemant, Maria ULg

Conference (2013, February 20)

Detailed reference viewed: 8 (0 ULg)
See detailNouveautés dans le diagnostic des allergies
GADISSEUR, Romy ULg

Conference (2013, February 19)

Detailed reference viewed: 4 (0 ULg)
See detailLe genre musical sous l’œil de la sociologie des sciences
Levaux, Christophe ULg

Conference (2013, February 17)

Detailed reference viewed: 14 (1 ULg)
See detailLa dendrochronologie au service des embarcations gallo-romaines de Pommeroeul
Thiebaux, Aurélie ULg

Conference (2013, February 16)

Detailed reference viewed: 14 (4 ULg)
Peer Reviewed
See detailMarvel Studios : du crossover au cross-média. Analyse d’un couplage entre comics et cinéma
Tomasovic, Dick ULg

Conference (2013, February 15)

La firme Marvel, célèbre maison d’édition de comics devenue également maison de production audiovisuelle, a développé durant les années 2000 une stratégie originale d’adaptation cinématographique des ... [more ▼]

La firme Marvel, célèbre maison d’édition de comics devenue également maison de production audiovisuelle, a développé durant les années 2000 une stratégie originale d’adaptation cinématographique des œuvres imprimées qui marque par son caractère hybride et son intermédialité. D’une part, ces films empruntent nombre de caractéristiques propres à l’écriture des comics pour renouveler la poétique des blockbusters. D’autre part, ces adaptations filmiques influent ensuite sur l’esthétique des comics, bouleversant ainsi la hiérarchie habituelle entre œuvres sources et œuvres adaptées. La question de l’adaptation de ces comics superhéroiques s’avère d’autant plus complexe que la bande dessinée et le cinéma ne sont pas les seuls médias ou les seules pratiques en jeu (animation, industrie du jouet et jeux vidéos doivent être également considérés). Pour tenter de cerner les enjeux de l’actuelle stratégie des adaptations Marvel, cet article tente d’appréhender le film de superhéros en tant que genre à part entière (renouvellement des codes du film d’action, des modes de production et de convergences industriels) en s’attachant, notamment, à un film emblématique de cette production : The Avengers (Joss Whedon, 2012). [less ▲]

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See detailRandom generation of dichotomous CAT response patterns with the R package catR
Magis, David ULg

Conference (2013, February 14)

The purpose of this talk is to briefly introduce the R package catR that permits random generation of response patterns under a computerized adaptive testing (CAT) framework. First, an outline of the CAT ... [more ▼]

The purpose of this talk is to briefly introduce the R package catR that permits random generation of response patterns under a computerized adaptive testing (CAT) framework. First, an outline of the CAT is proposed, with emphasis on the main concepts (item bank, ability estimation, next item selection, stopping rule, item exposure and content balancing). Then, the performance of the catR package is described by making connections between the general CAT framework and the functionalities of the R functions within catR. An example will be displayed, either as a “live” demonstration of catR or as part of the talk. Potential extensions of catR will also be discussed. The catR package was jointly developed by Gilles Raîche (Université du Québec à Montréal, Canada). [less ▲]

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See detailQuestionnements autour de nouvelles parentalités
Naziri, Despina ULg

Conference (2013, February 14)

Detailed reference viewed: 23 (0 ULg)
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See detailElective Course Allocation with numerical preferences
Bay, Maud ULg; Homburg, David ULg

Conference (2013, February 14)

In Universities, students have to select a specified number of elective courses to be included in their curriculum. Elective courses are a good way to increase students motivation and improve their ... [more ▼]

In Universities, students have to select a specified number of elective courses to be included in their curriculum. Elective courses are a good way to increase students motivation and improve their academic success. At HEC- Management School of the University of Liège, each student has to set a preference value for each course offered and taking a number of courses is mandatory to fulfill his curriculum. The Elective Course Allocation with Numerical Preferences (ECANP) is the problem of assigning to each student the requested number of courses such as to maximize the total preference score (i.e. the overall sum of preference values associated by each student to the courses he has been granted). The course assignment problem often comes along with the course time tabling problem. This issue is not considered in this work as a complete course schedule is available at the time of registration. Each student provides his own schedule availability and can only attend one course at a time. An additional constraint is that a course cannot be granted to a student if his preference value for this course is null. We present the set of rules defined to ensure that a feasible assignment can be obtained for each student. The ECANP problem is modeled as a mixed integer programming model and we use CPLEX to obtain optimal solutions for a set of realistic instances. The ECANP problem is compared to the Elective Course Planning problem solved with heuristic methods in [2], to the course Allocation problem for which a bidding mechanism is described in [1] and to the College Admission (CA) problem as presented in [3]. In particular in the CA each student provides a preference order instead of numerical values and each student must be granted only one college. We discuss the differences between the mathematical formulations of theses problems and the ECANP problem, and their properties. [less ▲]

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See detailDiálogo entre un poeta medieval y una obra aurisecular: Antón de Montoro a partir de "La Lozana Andaluza" de Francisco Delicado
François, Jéromine ULg

Conference (2013, February 13)

Entre los múltiples juegos intertextuales del Retrato de la Lozana andaluza, obra del presbítero Francisco Delicado publicada en 1528 en Venecia, están bien representados los autores del siglo XV y sus ... [more ▼]

Entre los múltiples juegos intertextuales del Retrato de la Lozana andaluza, obra del presbítero Francisco Delicado publicada en 1528 en Venecia, están bien representados los autores del siglo XV y sus obras, a los que se refiere mediante sencillas menciones, citas o aun a través de una reescritura. Así, tanto los textos de Fernando del Pulgar como La Cárcel de amor de Diego de San Pedro o La Celestina de Fernando de Rojas constituyen parte de los hipotextos que pueblan el mundo variopinto de la cortesana andaluza que nos retrata Delicado. Ahora bien el poeta cancioneril converso Antón de Montoro (¿1404-1477?) sobresale dentro de esta pléyade, aunque no por la frecuencia de las alusiones a esta figura, pues éstas se reducen a una única mención del poeta mediante su apodo « El Ropero », sino más bien por la peculiaridad del contexto en el que se inserta esta mención, entre alusiones a Séneca, Lucano y Marcial. Nuestra comunicación pretende demostrar que esta presencia del cordobés cuatrocentista caracterizado por su agudeza verbal entre los mamotretos del siglo XVI no se reduce a una sencilla intrusión entre autores clásicos en son de burla. Correrá a nuestro cargo determinar en qué medida ciertas afinidades, de índole estética y temática, que comparten Montoro y Delicado podrían explicar la mención de aquél por éste en tan halagador entorno textual. Ahora bien, destacar los principales puntos de contacto entre La Lozana del autor aurisecular y la figura del Ropero de hecho nos permitirá perfilar la peculiaridad del estatuto social de Antón de Montoro y de su quehacer poético. [less ▲]

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See detailAn adaptive large neighborhood search for a vehicle routing problem with multiple trips and driver shifts
Arda, Yasemin ULg; Crama, Yves ULg; François, Véronique ULg

Conference (2013, February 13)

This study analyzes a rich vehicle routing problem with multiple trips and driver shifts. The considered problem features are inspired from the practical case of a Belgian distribution company. Along with ... [more ▼]

This study analyzes a rich vehicle routing problem with multiple trips and driver shifts. The considered problem features are inspired from the practical case of a Belgian distribution company. Along with the multi-trip component, characteristics of this particular problem include time windows, pickup and delivery customers, and site-vehicle dependencies. Internal and external fleets are considered with different cost structures and driver shifts constraints. An adpative large neighborhood search is used to treat the problem. [less ▲]

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See detailWhat is the potential increase in the heart graft pool by cardiac donation after circulatory death?
Noterdaeme, Timothée; HANS, Marie-France ULg; NELLESSEN, Eric ULg et al

Conference (2013, February 09)

Detailed reference viewed: 34 (10 ULg)
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See detailViruses and Cancer
Barez, Pierre-Yves ULg; Carpentier, Alexandre ULg; Willems, Luc ULg

Conference (2013, February 08)

Detailed reference viewed: 46 (14 ULg)
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See detailA general lot-sizing problem in a closed-loop supply chain with returns
Amand, Guillaume ULg; Arda, Yasemin ULg

Conference (2013, February 08)

We consider a stochastic version of the multi-product multi-level capacitated lotsizing and scheduling problem with sequence-dependent setups. A bottler needs to determine its production schedule over a ... [more ▼]

We consider a stochastic version of the multi-product multi-level capacitated lotsizing and scheduling problem with sequence-dependent setups. A bottler needs to determine its production schedule over a finite horizon in order to satisfy a deterministic demand. The raw materials are supplied through two different sources: uncapacitated reserves of new bottles and the uncertain returns of used bottles. We present results for the single-item case. [less ▲]

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See detailFunctional screening of a metagenomic library from algal biofilms
Martin, Marjolaine ULg

Conference (2013, February 08)

Macroalgae, and particularly their lignin-free polysaccharides, are increasingly used for their gelling and therapeutic properties and for the production of biofuels and renewable chemical compounds. To ... [more ▼]

Macroalgae, and particularly their lignin-free polysaccharides, are increasingly used for their gelling and therapeutic properties and for the production of biofuels and renewable chemical compounds. To extract, hydrolyze and purify this biomass, algae hydrolyzing enzymes are needed. Our work aims to identify and characterize algal biomass hydrolyzing enzymes expressed by microorganisms living on the surface of algae, by functional metagenomics. Therefore, a microbial DNA extraction method was developed to isolate the gDNA from the microorganisms of the brown algae Ascophyllum nodosum and a metagenomic library was constructed in Escherichia coli. The library was screened for diverse enzymatic activities (esterases, xylanases, cellulases, α-amylases, arabinanases, caseinases and β-glucosidases) on agar plates with specific enzymes substrates. Several new microbial enzymes (esterases, β-glucosidases, α-amylases and cellulases) were identified revealing the wealth of our library. Furthermore, those enzymes had less than 50% sequence identity with known protein sequences; meaning that our approach allows to identify new microbial enzymes expressed by uncultured microorganisms. Plate tests for medium-throughput screening of specific enzymes hydrolyzing algal polysaccharides (agarases, carrageenases and alginate lyases) are currently being developed. Our approach will probably allow us to identify new families of those ill-known enzymes, with particular enzymatic activities. [less ▲]

Detailed reference viewed: 236 (20 ULg)
See detailTwo-stage stochastic integer programming models for strategic disaster preparedness
Döyen, Alper ULg; Aras, Necati; Arda, Yasemin ULg

Conference (2013, February 08)

We are interested in two distinct disaster management models which are modeled by two-stage stochastic integer programming. While the first model solution provides optimal post-disaster response related ... [more ▼]

We are interested in two distinct disaster management models which are modeled by two-stage stochastic integer programming. While the first model solution provides optimal post-disaster response related decisions and pre-disaster retrofitting decisions to minimize the total cost, in addition to the first model, the second model considers the recovery actions and the time of earthquake occurrence. In the models, retrofitting decisions are given for both buildings and bridges under a limited budget. Effective and efficient solution methods are proposed in the study. [less ▲]

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See detailLes infections respiratoires: méthodes de diagnostic au laboratoire.
HUYNEN, Pascale ULg

Conference (2013, February 08)

Detailed reference viewed: 14 (1 ULg)
See detail(Re)productive Traditions, Cultural Transmission and Egyptology
Gillen, Todd Jonathan ULg

Conference (2013, February 08)

Detailed reference viewed: 23 (0 ULg)
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See detailMultiperiod vehicle loading with stochastic release dates
Pironet, Thierry ULg

Conference (2013, February 08)

Detailed reference viewed: 9 (0 ULg)
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See detailOn-line flow cytometry profiling of Escherichia coli stress response
Brognaux, Alison ULg; Han, Shanshan; Sorensen, Soren et al

Conference (2013, February 08)

Detailed reference viewed: 43 (10 ULg)
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See detailGeochemistry and XRD to differentiate oolitic ironstone geological levels from Germany, Belgium and France and application to the archaeological artefacts
Salomon, Hélène ULg; Goemaere, Eric; Mathis, François ULg et al

Conference (2013, February 07)

Particle Induced X-ray Emission (PIXE) and Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) have largely demonstrated their capability to analyse trace elements for determining the ... [more ▼]

Particle Induced X-ray Emission (PIXE) and Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) have largely demonstrated their capability to analyse trace elements for determining the origin of archaeological materials. Trace elements can in fact be used as fingerprint of the geological origin and thus contribute to provenance investigations. This point is an important question for prehistoric studies, as it provides information on mobility, exchanges and interaction between groups of population. We present experimental PIXE configurations which allow to investigate prehistoric oolithic haematite, at the ppm level without any preparation or sampling. We compare the data obtained with two devices, namely AGLAE (Accélérateur Grand Louvre d'Analyse Elémentaire) in Paris and the cyclotron in the Centre Européen d'archéométrie in Liège and we determined the uncertainties of measures. The geological samples were compared in order to estimate de geochemical variability in stratigraphy and in width of oolithic haematite from the Ordovician in Caen region (France) and from the Devonian in Hesbaye (Belgium). These data were also compared to oolithic haematite used during Mesolithic and LBK (Early Neolithic) in both the regions. Furthermore we looked for mineralogical fingerprints by X-Ray Diffraction on disoriented powders. The mineralogical composition is ubiquitous and no discrimination between the stratigraphical layers was possible. [less ▲]

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See detailGeological record and sedimentology of the Palaeozoic oolitic ironstone deposits in Western Europe. Spatial relationships with the Linienbandkeramik settlements (LBK) in Belgium.
Goemaere, Eric; Dreesen, Roland; Katsch, A. et al

Conference (2013, February 07)

Mined since prehistoric times, oolitic ironstones (OIS) were a very important world source of iron from 1850 to 1945: hereafter they have been progressively replaced by the Precambrian Banded Iron ... [more ▼]

Mined since prehistoric times, oolitic ironstones (OIS) were a very important world source of iron from 1850 to 1945: hereafter they have been progressively replaced by the Precambrian Banded Iron- Formations (BIF). OIS are iron-rich sedimentary rocks bearing ferruginous ooids. They consist of at least 15% iron. In Western Europe, their overall depositional environment is that of a shallow shelf, most often located close to the transition from non-marine to marine environments. Their main age range is concentrated within the Ordovician through Devonian and the Jurassic through Paleogene. Proterozoic occurrences are known but these occur outside Europe. The host rocks of the ironstones are predominantly clastic, whereas the host sediment of the ferruginous ooids can be either clastic or carbonate or both. The OIS occur at the top of coarsening and shoaling upward cycles. They represent condensed deposits and transgressive system tracts. Numerous oolitic ironstone deposits are interpreted as tempestites or as intertidal deposits. It is generally agreed that ferruginous ooids formed in shallow marine water conditions, near the water-sediment interface, with repeated reworking of the sediment. Such an environment implies oxidizing conditions, the sedimentary iron being in the ferric state. The exact source of the iron is still a matter of discussion and speculation, just as the primary or secondary origin of the ferruginous ooids. Besides hematite (or goethite), also siderite, Fe-dolomite and berthierine/chamosite are present in the OIS as iron-bearing minerals. Due to weathering processes the carbonate matrix is often removed, the iron is released and oxidized, whereas the ferrous silicates are converted into ferric oxides or ferric hydroxides. Many old mining activities are based on occurrences of this weathered ore. The latter material has also strong staining properties. 1. Germany OIS are outcropping in the Eifel area. The latter is part of the Ardenno-Rhenish Massif and lies in the eastern extension of the Neufchateau Synclinorium, south of the Ardenne Anticlinorium (enclosing the Cambro-Ordovician Stavelot-Venn inlier). The general structure of the Eifel corresponds to an intensively folded and faulted synclinorium In the center of this synclinorium, outcrops of OIS occur on both flanks of successive synclines that are individually named (from the north to the south): the Sötenicher Mulde, the Blankenheimer Mulde the Rohrer Mulde, the Dollendorfer Mulde, the Ahrdorfer Mulde and the Hillesheimer Mulde. Two important stratigraphic levels with IOS are known and they coincide more or less with the Lower-Middle Devonian boundary (Uppermost Emsian- Lowermost Eifelian). These OIS represent excellent marker beds for geological mapping. 2. The Netherlands There is no outcrop of OIS in this country. 3. Belgium Oolitic iron ores were formed during different periods in Belgium: the Lochkovian (Lower Devonian, Dinant Synclinorium, restricted to the Belgian-French border), the Givetian (Middle Devonian, Dinant Synclinorium), the Frasnian (Upper Devonian, Dinant Synclinorium), the Famennian (Upper Devonian, Namur S., Dinant S. & Vesdre S.) and the Toarcian-Aalenian (Jurassic, Lorraine area, Paris Basin – called “minette ore”). The most important OIS level is the Lower Famennian one. It has been intensively mined until the middle of the 20th century, essentially in the Namur Synclinorium, between the cities of Namur and Huy. In this area, its important thickness (until 1.85m) and the number of layers triggered the development of an important economic activity. Outcrops were restricted to the tributaries of the Meuse River. The Famennian oolitic ironstone facies change from north to south by a gradual decrease in the number of layers, in their thickness, grain size, ooid concentration, clast size and iron content. They represent also excellent lithostratigraphical marker beds. The clay-dolomitic matrix is being progressively replaced by a calcitic cement. The other Devonian OIS levels are not of great economic importance, they were only mined locally, to supply smith’s working places. Due to surface mining, outcrops are now very rare, and often indicated by a light depression in the topography only. 4. Grand-Duchy of Luxembourg OIS are restricted to the Jurassic (Aalenian-Lower Bajocian) in the NW part of the Paris Basin. This essentially goethitic ore (“minette”) was intensively mined in the three adjacent country borders area (FR-BE-LU). No OIS levels in the Lower Devonian are outcropping in the northern part of the Grand Duchy. 5. France Numerous OIS layers are known in France at several stratigraphical levels, but a lot of them cannot be considered as a real ore. Paleozoic OIS belonging to the Armorican Massif were mined in the Normandy area (Urville Fm, Llanvirn, Middle Ordovician) and in the Bretagne area (Arenig, Lower Ordovician). In Normandy, OIS do outcrop inside several synclines (e.g. May and Urville Sy.), as one thick composite layer.  The spatial relationships of the different oolitic ironstone levels with the Linienbandkeramik settlements (LBK) in the studied area, will be presented. [less ▲]

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See detailPetrographical differentiation between Palaeozoic oolitic ironstones from France, Belgium and Germany and application to the provenance study of archaeological artefacts – preliminary results
Dreesen, Roland; Savary, Xavier; Goemaere, Eric et al

Conference (2013, February 07)

Samples of Palaeozoic oolitic ironstone beds susceptible of having being used as raw materials for Neolithic red ochres, have been petrographically investigated. The preliminary results of this first ... [more ▼]

Samples of Palaeozoic oolitic ironstone beds susceptible of having being used as raw materials for Neolithic red ochres, have been petrographically investigated. The preliminary results of this first comparative analysis are quite encouraging: microfacies differences have been observed between Ordovician oolitic ironstones from Normandy (France), late Upper Devonian oolitic ironstones from Belgium and uppermost Lower Devonian to lowermost Middle-Devonian (Emsian-Eifelian) oolitic ironstones from the Eifel area (Germany). Petrographical differentiation is based upon contrasting grain size, mineralogy (hematite/chlorite ratio) and typology of the ferruginous ooids, besides differences in mineralogy, diagenetic history and lithologic nature of the host sediments. Most conspicuous are differences in ferruginous ooid typology, including “true” concentric ooids, superficial ooids, algal oncoids and pseudo-ooids (ferruginized cortoids and rounded bioclasts). “Flax seed” or Clinton-type iron ores (rich in flattened ooids) and “fossil iron ores” (essentially composed of ferruginized bioclasts) can be identified as well as transitional or mixed types. Homogenous and well-sorted, often flattened and fine-grained ferruginous “true” ooids (flax seed ore) with alternating hematite and chlorite cortices in a sideritic- chloritic or fine siliciclastic matrix, are characteristic for the Ordovician (Llanvirn) oolitic ironstones of Normandy (basal part of the Urville Shales). Locally, weathered levels exist, enclosing limonitic (goethitic) crusts. Medium-sorted, fine-to coarse- grained ferruginous hematitic pseudo-ooids (ferruginized bioclasts) in a bioclastic limestone matrix (fossil ore) characterize the Lower-Middle Devonian boundary oolitic ironstone beds (Heisdorf and Lauch Formations, Eifel Synclines). Finally, well- to medium-sorted heterogenous, fine- to medium-grained, pure or mixed flax seed- and fossil ore-type hematitic oolitic ironstones in siliclastic and/ore carbonate matrices, characterize the Belgian Latest Upper Devonian (Famennian) ironstone deposits (Hodimont Formation, Famenne Shales Group). Several stratigraphic levels do exist within the Lower Famennian and basal part of the Upper Famennian in the Namur, Dinant and Vesdre Synclinoria, but the lowermost Famennian one is the only level that has been mined. Within some of the younger Famennian oolitic ironstone levels, proximal and distal facies can be distinguished on the basis of microfacies differences and mineralogy of the ferruginous pseudo-ooids. Only the proximal hematitic facies of the lowest stratigraphical oolitic ironstone level (level I) is supposed to have been used in prehistoric times for the manufacturing of ochre. Diagenetic sideritization and dolomitization, particle deformation as well as sulphide mineralizations, affect most of the studied oolitic ironstones. However, the intensity of these mineralizations varies strongly (even within the same deposit) and depends on local tectonics. A distinction can be made between the Emsian-Eifelian and Famennian fossil iron ores, based on the nature of the bioclasts and other ferruginzed components). Eifelian oolitic ironstones contain ferruginized crinoids, bryozoans, trilobites, brachiopods, goniatites besides ferruginized siliciclastic intraclasts, whereas the Famennian ones are dominated by ferruginous ooids and algal oncoids, mixed with ferruginized bioclasts including crinoids, bryozoans, brachiopods, ostracods, algae and incertae sedis, and locally intraclasts (ferruginized stromatolitic crusts). Distal facies contain slightly Fe-impregnated bioclasts only such as crinoid ossicles and display a higher chlorite/hematite ratio. Thin sections have been made in archeological objects (red ochre), allowing a first comparative petrographical analysis indicating their probable geological and geographical provenance. References Ph. Joseph, 1982. Le minerai de fer oolithique Ordovicien du Massif Armoricain: sédimentologie et paléogéographie. Thèse présentée à l’Ecole Nationale Supérieure des Mines de Paris. 325 p. R. Dreesen, 1989. Oolitic ironstones as event-stratigraphical marker beds within the Upper Devonian of the Ardenno-Rhenish Massif, in: Young, T.P. & Taylor, W.E.G. (eds), Phanerozoic Ironstones. Geological Society Special Publications, n°46, pp. 65-78 Rath, S., 2003. Die Erforschungsgeschichtede Eifel-Geologie. Ph.D. Dissertation, Rheinisch- Westfälische Technische Hochschule Aachen, 239 p. [less ▲]

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See detailAutomatic Aircraft Cargo Load Planning with Pick-up and Delivery
Lurkin, Virginie ULg; Schyns, Michael ULg

Conference (2013, February 07)

This research aims to develop a new mixed integer linear program to solve the containers assignment problem when pickup and deliveries are considered. Given a pool of ULDs and an aircraft with multiple ... [more ▼]

This research aims to develop a new mixed integer linear program to solve the containers assignment problem when pickup and deliveries are considered. Given a pool of ULDs and an aircraft with multiple destinations, we want to obtain a loading plan determining at which positions the ULDs must be assigned in order to minimize simultaneous the quantity of fuel consumed and the number of re-handles. The loading plan should also ensure a number of structural, safety and manoeuvrability constraints. The model has been tested on real instances and provides encouraging results. [less ▲]

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See detailOptimization model for empty container repositioning
Salmon, Frédéric ULg; Limbourg, Sabine ULg

Conference (2013, February 07)

Empty container management is a transportation issue relating to the imbalance of container demand and supply in various parts of the world. Hence the necessity for shippers to move empty containers to ... [more ▼]

Empty container management is a transportation issue relating to the imbalance of container demand and supply in various parts of the world. Hence the necessity for shippers to move empty containers to supply areas. The purpose of this research is to develop a decision support tool applying to intermodal freight transport. This project aims at minimizing the overall cost of empty container management in the hinterlands of the ports of Antwerp and Rotterdam. The proposed model is a two-stage stochastic network model which takes account of transit time between ports and terminals, shipping cost, the carrying capacity of the various modes of transport, the stochastic demand and supply of each terminal and port as well as other parameters such as substitution or holding costs. In addition, the proposed model considers the possibility of intermodality with road transportation. Along with the optimal solution, our experimental data should yield an understanding of the impact of costs on the repartition of ows and inventories [less ▲]

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See detailIntermodal network design for freight transportation in Belgium - location of rail/road and road/inland waterway terminals
Mostert, Martine ULg; Limbourg, Sabine ULg

Conference (2013, February 07)

In the recent years, growing concerns about environmental, societal and economic issues have emerged in the society. The improvement and the expansion of the multimodal network is one way of solving those ... [more ▼]

In the recent years, growing concerns about environmental, societal and economic issues have emerged in the society. The improvement and the expansion of the multimodal network is one way of solving those kinds of problems. The objective of this work is therefore the integration of inland waterway, rail and road transport into the linear modeling of intermodal terminal location problems, based on transportation costs functions which are nonlinear with the distance traveled. The model should also take into account the capacity constraints linked to the different modes of transport. [less ▲]

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See detailRenewed in Translation: The Persea Tree from Egypt to the Greeks
Caneva, Stefano ULg

Conference (2013, February 07)

The paper investigates continuities and ruptures in the meaning and use of the sacred persea tree from Pharaonic to Graeco-Roman tradition, by focusing on a period from III cent. BC to late Antiquity.

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See detail(Re)productive Tradition in Ancient Egyptian
Winand, Jean ULg

Conference (2013, February 06)

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Peer Reviewed
See detailLes problèmes cutanés liés aux médicaments
GADISSEUR, Romy ULg

Conference (2013, February 05)

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Peer Reviewed
See detailNeuroimagerie et états de conscience altérée
VANHAUDENHUYSE, Audrey ULg

Conference (2013, February 04)

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See detailComment les circuits « alternatifs » de consommation alimentaire s’intègrent-ils dans une dynamique durable, incluant dimensions sociales, économiques et environnementales? Le cas des GAC et du Commerce équitable.
Thys, Séverine ULg

Conference (2013, February 01)

Cette contribution interroge l’existence d’un référentiel critique et argumentatif commun à des initiatives d’Economie Sociale. En utilisant l’appareillage théorique de la « sociologie des épreuves », les ... [more ▼]

Cette contribution interroge l’existence d’un référentiel critique et argumentatif commun à des initiatives d’Economie Sociale. En utilisant l’appareillage théorique de la « sociologie des épreuves », les propos de GACEURS et de bénévoles/salariés du commerce équitable seront analysés afin de voir si le concept de Développement Durable porte en lui un projet sociétal, un référentiel fédérateur, apte à mobiliser des consom’acteurs autour de revendications partagées. [less ▲]

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See detailRisk Taking of Executives under Different Incentive Contracts : Experimental Evidence
Lefebvre, Mathieu ULg

Conference (2013, February 01)

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See detailAcceptation et vulgarisation de l’irrigation de complément dans la province du Bam, au Burkina Faso
Zongo, Bétéo ULg; Fossi, Sévère; Ouédraogo, Désiré et al

Conference (2013, February)

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See detailMéthodes Booléennes en recherche opérationnelle
Crama, Yves ULg

Conference (2013, February)

Le titre de cette conférence est celui d'une monographie cosignée par Peter L. Hammer et Sergiu Rudeanu, et dont la publication en 1968 a inspiré un nombre important de travaux de recherche. Très ... [more ▼]

Le titre de cette conférence est celui d'une monographie cosignée par Peter L. Hammer et Sergiu Rudeanu, et dont la publication en 1968 a inspiré un nombre important de travaux de recherche. Très récemment, le regretté Peter Hammer et moi-même avons publié deux lointaines mises à jour de cet ouvrage classique: une monographie intitulée Boolean Functions: Theory, Algorithms, and Applications (700 pages, Cambridge University Press, 2011) et une collection de surveys sur le thème Boolean Models and Methods in Mathematics, Computer Science and Engineering (780 pages, Cambridge University Press, 2010). La taille de ces deux volumes et de leurs sections bibliographiques sont les témoins de la vitalité de ce domaine de recherche et de son développement impressionnant. Les fonctions booléennes comptent en effet parmi les objets les plus fondamentaux étudiés en mathématiques. Elles interviennent dans de nombreux modèles utilisés en recherche opérationnelle, informatique, intelligence artificielle, économie, ingénierie, cryptographie, biologie et autres domaines d'application. Dans cet exposé, nous proposons un bref aperçu de quelques modèles booléens fondamentaux et de leurs applications. [less ▲]

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See detailPostnatal growth assessment and charts for premature infants.
SENTERRE, Thibault ULg

Conference (2013, February)

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See detailPerformance evaluation of methods for correcting ocular artifacts in electroencephalographic (EEG) recordings
Kirkove, Murielle ULg; François, Clémentine ULg; Libotte, Aurélie et al

Conference (2013, February)

The presence of ocular artifacts (OA) due to eye movements and eye blinks is a major problem for the analysis of electroencephalographic (EEG) recordings in most applications. A large variety of methods ... [more ▼]

The presence of ocular artifacts (OA) due to eye movements and eye blinks is a major problem for the analysis of electroencephalographic (EEG) recordings in most applications. A large variety of methods (algorithms) exist for detecting or/and correcting OA’s. We identified the most promising methods, implemented them, and compared their performance for correctly detecting the presence of OA’s. These methods are based on signal processing “tools” that can be classified into three categories: wavelet transform, adaptive filtering, and blind source separation. We evaluated the methods using EEG signals recorded from three healthy persons subjected to a driving task in a driving simulator. We performed a thorough comparison of the methods in terms of the usual performances measures (sensitivity, specificity, and ROC curves), using our own manual scoring of the recordings as ground truth. Our results show that methods based on adaptive filtering such as LMS and RLS appear to be the best to successfully identify OA’s in EEG recordings. [less ▲]

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See detailEtats de conscience altérée: traitements
Thibaut, Aurore ULg

Conference (2013, February)

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See detailQu'est-ce qu'apprendre à penser ?
Gauvry, Charlotte ULg

Conference (2013, February)

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See detailFIRST, Fibered Imager foR a Single Telescope
Huby, Elsa ULg

Conference (2013, February)

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See detailBrain function in coma
Charland-Verville, Vanessa ULg; Laureys, Steven ULg

Conference (2013, February)

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See detailProjets éoliens en Région wallonne : quand le processus décisionnel met à mal l’acceptabilité locale.
Rossignol, Nicolas ULg; Parotte, Céline ULg; Fallon, Catherine ULg

Conference (2013, January 31)

Alors que l’énergie éolienne bénéficie du soutien de la population dans les pays européens (Wolsink, 2007b), de nombreuses études notent l’existence de groupes d’opposition structurés et actifs au niveau ... [more ▼]

Alors que l’énergie éolienne bénéficie du soutien de la population dans les pays européens (Wolsink, 2007b), de nombreuses études notent l’existence de groupes d’opposition structurés et actifs au niveau local, près des projets de parcs ou des parcs existants (Breukers & Wolsink, 2007). La Belgique et plus précisément la Région wallonne ne semblent pas déroger à ces observations. En effet, la population wallonne dans un récent sondage IPSOS (2010), montre un soutien relatif à l’énergie éolienne (86% des riverains d’un parc éolien se montrent favorables à l’énergie éolienne). Pourtant les promoteurs éoliens wallons et les décideurs publics font aussi état de façon paradoxal des limites de cette adhésion sociale par la rencontre de groupes d’opposants organisés ou des riverains des communes concernées capables d’influencer l’issue du projet. De là, on observe l’intérêt des différents acteurs pour le citoyen et son intégration dans le processus de décision. Ceci se traduit comme tel : l’intérêt du promoteur privé pour les citoyens résulte d’un constat d’échecs de projets précédemment introduits et de la volonté de voir les suivants acceptés. Par ailleurs, les pouvoirs publics aussi soulignent l’intérêt d’intégrer le citoyen dans le processus décisionnel. Aussi, le vade mecum réalisé sur initiative du ministère de la Région wallonne et le cadre de référence pour l’implantation d’éoliennes en Région wallonne de 2002 le promeuvent également : « une communication efficace et complète envers la population (est) un élément essentiel à la réussite d’un projet ». Dans le cadre d’un projet de recherche commandité par Electrabel en 2010, le Spiral (ULg) en collaboration avec le Centre Environnement et le Département de Psychologie, Cognition et Comportement (ULg), a eu l’occasion d’étudier les ressorts de l’acceptabilité locale en Région wallonne en vue de l’analyse et du développement d’outils adaptés permettant d’améliorer les processus décisionnels et de participation. Cette contribution se présentera en deux parties. Dans un premier temps, nous montrerons que le processus décisionnel en vigueur en Région Wallonne n’est pas étranger à l’acceptation difficile de certains projets de parc éolien. Le processus (au sens large, formel et informel) d’implantation d’un parc éolien est aux mains des promoteurs, de l’autorité politico-administrative et des citoyens. Chacun d’eux a des objectifs, une vision du projet et des discours qui leur sont propres. Pourtant, malgré leurs dynamiques propres, tous sont soumis à la même dynamique procédurale avec des armes parfois inégales. C’est précisément la manière dont les interactions, les rapports de forces entre ces entités se nouent et se jouent qui influencera l’issue du projet. Le processus tel qu’il est observé met en lui-même à mal le sentiment de justice procédurale des riverains, entendue comme le droit à un traitement équitable, comme le droit aux mêmes considérations que les autres dans le cadre d’une décision politique concernant la manière dont des biens et opportunités doivent être distribués (Kuehn, 2000). Dans un deuxième temps, nous présenterons les pistes de réflexion avancées par les acteurs de terrain pour construire un processus qui permette une meilleure appropriation. Les résultats de cette recherche empirique sont issus d’une combinaison de méthodes qualitatives mobilisées (38 entretiens semi-directifs, 4 focus group et un Atelier Scénario) dans le cadre d’un protocole précis. Quatre cas de projets d’implantation d’éoliennes répartis sur le territoire wallon et sélectionnés selon des critères bien établis ont pu être étudiés. En complément de l’analyse un grand nombre de documents issus des dossiers relatifs aux projets éoliens, disponibles aux administrations communales en question, dans la presse, sur Internet, quatre focus group (Stewart, Shamdasani & Rook, 2007) avec les riverains concernés et des entretiens semi-directifs ont été menés avec les différentes parties prenantes aux projets de parc éolien (bourgmestres, échevins, promoteurs, riverains, responsables de coopératives, fonctionnaires régionaux, etc.). L’identification des structures et les caractéristiques institutionnelles génératrices de conflit a permis d’envisager la base de contenu de la réflexion de Atelier Scénario (Fung, 2007 ; Sintomer, 2007) avec l’ensemble des acteurs liés au processus décisionnel d’implantation de parc éolien en Région wallonne pour mieux envisager les améliorations à y apporter au travers de l’exercice de prospective. [less ▲]

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See detailDuality induced by canonical extension: The boolean case
Cavus, Rukiye ULg; Hansoul, Georges ULg

Conference (2013, January 31)

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See detailVitamin D testing and clinical practice
CAVALIER, Etienne ULg

Conference (2013, January 31)

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See detailEvaluation clinique des patients en état de conscience altérée
VANHAUDENHUYSE, Audrey ULg

Conference (2013, January 31)

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See detailLa réforme de la nationalité belge 2013 - évolution ou révolution
Wautelet, Patrick ULg

Conference (2013, January 31)

Ces documents ont comme ambition de présenter de manière synthétique les modifications apportées au Code de la nationalité belge par la loi du 4 décembre 2012. Ils permettent au lecteur d'embrasser de ... [more ▼]

Ces documents ont comme ambition de présenter de manière synthétique les modifications apportées au Code de la nationalité belge par la loi du 4 décembre 2012. Ils permettent au lecteur d'embrasser de manière rapide les modifications les plus importantes, sans s'arrêter à l'ensemble des détails. Ces documents ont été distribués lors d'une conférence qui s'est tenue le 31 janv 2013 à Liège. [less ▲]

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See detailYBCO superconducting thick films: electrophoretic deposition (EPD) on non-planar silver substrates
Namburi, Devendra Kumar ULg; Closset, Raphaël ULg; Fagnard, Jean-François ULg et al

Conference (2013, January 30)

A new formulation of a stable YBa2Cu3O7-δ (YBCO) suspension is proposed in which butanol is preferred to the commonly-used acetone as the suspension medium. Appropriate surfactant has been used to develop ... [more ▼]

A new formulation of a stable YBa2Cu3O7-δ (YBCO) suspension is proposed in which butanol is preferred to the commonly-used acetone as the suspension medium. Appropriate surfactant has been used to develop the superficial charge on the YBCO particles in order to promote migration during the process of electrophoresis. YBCO thick films were deposited on silver tubes and half-tubes by electrophoretic deposition (EPD). The EPD parameters (deposition voltage, deposition time, number of layers etc.) were optimized with respect to the microstructural properties of the YBCO layers after an intermediate heat treatment at 920°C. An essential criterion is the minimization of macrocracks after the 920°C heat treatment, since it was found to favour good superconducting properties after the final heat treatment. This final heat treatment involves (i) partial melting above the peritectic temperature, (ii) peritectic recombination at lower temperature and (iii) reoxygenation at 500°C. Finally, the superconducting properties of the best films are discussed. A uniformly coated 55μm-thick YBCO film on a curved Ag substrate showed excellent superconducting properties with the onset of critical temperature at 92.2 K and an associated sharp resistive transition with transition width < 1 K. [less ▲]

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See detailUse of specific in-situ sensors : enose
Romain, Anne-Claude ULg

Conference (2013, January 30)

e-nose principle explanation

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See detailVeneered zirconia : the chipping problem.
MAINJOT, Amélie ULg

Conference (2013, January 30)

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See detailJNK/ROS Signaling Pathway Is Responsible for Induction of Autophagy in HDAC5 depleted Cancer Cells
Hendrick, Elodie ULg; Mathéus, Nicolas; Peixoto, Paul ULg et al

Conference (2013, January 29)

Introduction: Histone deacetylases (HDAC) is a family of eighteen enzymes which modulates the acetylation level of histones and non-histone proteins to regulate gene expression and chromatin structure ... [more ▼]

Introduction: Histone deacetylases (HDAC) is a family of eighteen enzymes which modulates the acetylation level of histones and non-histone proteins to regulate gene expression and chromatin structure. Broad spectrum inhibitors of these enzymes such as SAHA can inhibit tumor growth both in vitro and in vivo and are currently used as anti-cancer agents in clinic. For many years, we are investigating the specific role of individual HDAC members in cancer biology and we have recently demonstrated that depletion of HDAC5 using siRNA technology triggered cancer cells to both autophagy and apoptosis (ref papier). The study of autophagy in cancer is a new research field that has recently generated tremendous attention due to the recognition that autophagy can have either pro-survival or pro-death functions depending on its level of activation. In addition, more and more studies indicate that a complex relationship exists between autophagy and apoptosis, and that the interplay between these two processes determines whether a cell will live or die. Aims: The goal of this study is to further understand the role of autophagy induced by HDAC5 depletion. Current investigations include determining the molecular mechanisms by which HDAC5 depletion induces autophagy and exploring regulatory relationship between autophagy and apoptosis on cancer cell death in absence of HDAC5. Results: The set up of the autophagy in absence of HDAC5 was demonstrated by the conversion of LC3 and development of autophagosomes by electronic microscopy. Transcriptomic study demonstrated a deregulation of a set of genes involved in ROS detoxification in HDAC5 depleted cancer cells leading to significant increase of ROS levels. Further investigations showed that pretreatment with NAC, a ROS scavenger, effectively blocked the accumulation of ROS and autopahgy triggered by HDAC5 silencing. Moreover, HDAC5 depletion induces activation of JNK, and knockdown of JNK by siRNA inhibited ROS production and autophagy, but antioxidant NAC failed to block JNK activation induced by HDAC5 depletion indicating that JNK activation may be a upstream signaling of ROS and should be a core component in HDAC5 silencing-induced autophagic signaling pathway. Finally, blocking of autophagy induced by HDAC5 silencing with NAC or chloroquine and bafilomycin enhanced pro-apoptotic effect. Conclusion: Autophagy functions as a prosurvival mechanism to mitigate HDAC5 depletion-induced apoptotic cell death, suggesting that targeting autophagy might improve the therapeutic effects of specific HDAC5 inhibition. [less ▲]

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See detailMéthodologie de calcul des flux turbulents : Corrections de fréquence
Heinesch, Bernard ULg

Conference (2013, January 29)

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See detailInteraction of HTLV-­1 Tax with minichromosome maintenance proteins accelerates the replication timing program
Carpentier, Alexandre ULg; Barez, Pierre-Yves ULg; Willems, Luc ULg

Conference (2013, January 28)

Human T-lymphotropic virus type 1 (HTLV-1) is a retrovirus that infects about twenty million individuals worldwide. HTLV-1 is the causative agent of different diseases among which the most common are the ... [more ▼]

Human T-lymphotropic virus type 1 (HTLV-1) is a retrovirus that infects about twenty million individuals worldwide. HTLV-1 is the causative agent of different diseases among which the most common are the adult T-cell leukemia (ATL) and a neurodegenerative disorder called HAM/TSP (Human associated myelopathy/ Tropical spastic paraparesis). A key parameter of HTLV-1 pathogenesis is faster replication of provirus-carrying lymphocytes allowing clonal expansion of infected cell populations. The virally-encoded Tax oncoprotein plays an essential role in this process by interacting with DNA replication origins and accelerating S phase progression. By reprogramming the timing of origin firing, Tax also creates a replicative stress leading to DNA double strand breaks. This mechanism further triggers the DNA damage response (DDR) that induces cell cycle arrest and initiates either apoptosis or senescence. However, HTLV-1 infected cells have developed strategies to interfere with the DDR and are adapted to checkpoint control. These cells are thus able to proliferate despite occurrence of DNA damage. Based on these observations, we now propose a novel therapeutic approach based on the principle of synthetic lethality. [less ▲]

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See detailHuman papillomavirus entry into NK cells requires CD16 expression and triggers cytotoxic activity and cytokine secretion.
Renoux, Virginie; Langers, Inge; Dortu, Estelle et al

Conference (2013, January 28)

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See detailMéthodologie de calcul des flux turbulents : rotation du système de coordonnées
Heinesch, Bernard ULg

Conference (2013, January 28)

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See detailDespina Naziri, "How lesbian parenting leads to reassess bisexuality and thirdness"
Naziri, Despina ULg

Conference (2013, January 28)

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See detailThe Intercellular Transfer of Endothelial-­‐Circulating-­‐MiR-­‐503 Inhibits Tumor Growth
Bovy, Nicolas; Frères, Pierre; Carnet, Oriane et al

Conference (2013, January 28)

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See detailLymphangiogenesis and extracellular matrix remodeling
Erpicum, Charlotte ULg; Detry, Benoît ULg; Paupert, Jenny ULg et al

Conference (2013, January 28)

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See detailtax evasion and peer effects: an experiment in Belgium, France and the Netherlands
Lefebvre, Mathieu ULg

Conference (2013, January 28)

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See detailVie et différences anthropologiques
Pieron, Julien ULg

Conference (2013, January 26)

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See detailLe point sur l'émaillage de la zircone: aspects cliniques et scientifiques
MAINJOT, Amélie ULg

Conference (2013, January 25)

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See detailIntervention en tant que discutante
Mancuso, Eva ULg

Conference (2013, January 25)

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