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See detailAnalyse des transformations du secteur des ONG belges de développement : vers une professionnalisation.
Contor, Justine ULiege

Conference (2017)

Cette communication revient sur le processus de transformation à l’œuvre dans le secteur des ONG observée depuis quelques années. Cette transformation porte à la fois sur l'organisation et sur le ... [more ▼]

Cette communication revient sur le processus de transformation à l’œuvre dans le secteur des ONG observée depuis quelques années. Cette transformation porte à la fois sur l'organisation et sur le travailleur. En effet, il semblerait que nous sommes face à une nouvelles génération d'ONG, "gestionnaire", dans laquelle de nouveau profil de travailleur (marketing, gestion, communication) coexiste avant d'autres travailleurs avec des profils plus techniques et souvent plus engagés aussi. [less ▲]

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See detailLocutif: une catégorie syntaxique de marqueurs de discours
Mazziotta, Nicolas ULiege; Kahane, Sylvain

Conference (2017)

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See detailDurabilité du maraîchage urbain : entre ancrage territorial et trajectoires de mise en œuvre
Plateau, Lou; Maughan, Noémie; Visser, Marjolein et al

Conference (2017)

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See detailSeasonal Transport in Mars’ Mesosphere revealed by Nitric Oxide Nightglow vertical profiles and global images from IUVS/MAVEN
Stiepen, Arnaud ULiege; Stewart; Jain et al

Conference (2017)

We analyze the ultraviolet nightglow in the atmosphere of Mars through Nitric Oxide (NO) δ and γ bands emis- sions. On the dayside thermosphere of Mars, solar extreme ultraviolet radiation partly ... [more ▼]

We analyze the ultraviolet nightglow in the atmosphere of Mars through Nitric Oxide (NO) δ and γ bands emis- sions. On the dayside thermosphere of Mars, solar extreme ultraviolet radiation partly dissociates CO2 and N2 molecules. O(3P) and N(4S) atoms are carried by the day-to-night hemispheric transport. They preferentially descend in the nightside mesosphere in the winter hemisphere, where they can radiatively recombine to form NO(C2Π). The excited molecules promptly relax by emitting photons in the UV δ bands and in the γ bands through cascades via the A2Σ, v’ = 0 state. These emissions are thus indicators of the N and O atom fluxes transported from the dayside to Mars’ nightside and the winter descending circulation pattern from the nightside thermosphere to the mesosphere (e.g. Bertaux et al., 2005 ; Bougher et al., 1990 ; Cox et al., 2008 ; Gagné et al., 2013 ; Gérard et al., 2008 ; Stiepen et al., 2015). Observations of these emissions have been accumulated on a large dataset of nightside disk images and vertical profiles obtained at the limb by the Imaging Ultraviolet Spectrograph (IUVS, McClintock et al., 2015) instrument when the Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft is at its apoapsis and its periapsis phases along its orbit, respectively. We present discussion on the variability in the brightness, altitude and topside scale height of the emission with season, geographical position and local time and possible interpretation for local and global changes in the meso- sphere dynamics. IUVS images and limb scans reveal unexpected complex structure of the emission. The brightest emission is observed close to the winter pole. The emission is also surprisingly more intense in some sectors located close to the equator : at 120 ̊ and 150 ̊ longitude. Observations also reveal spots and streaks, indicating irregularities in the wind circulation pattern and possible impact of waves and tides. The disk images and limb profiles are compared to the LMD-MGCM model (Gonzàlez-Galindo et al., 2009 ; Lopez-Valverde et al., 2011) to focus on the seasonal, local time and geographical influences on the NO Nightglow emission. We will also provide a statistical study of the regions of enhanced brightness (i.e. splotches and streaks) and discuss possible interpretation from the comparison to the GCM. [less ▲]

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See detailCT-assisted retrograde urethrography in male dogs
Porato, Mathilde ULiege; Hamaide, Annick ULiege; Noël, Stéphanie ULiege et al

Conference (2017)

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See detailThiamine and lipophilic thiamine precursors protect against oxidative damage in cultured neuroblastoma cells
Sambon, Margaux ULiege; Wins, Pierre; Bettendorff, Lucien ULiege

Conference (2017)

Recent evidence suggests that thiamine (vitamin B1) and some of its derivatives can exert prominent neuroprotective effects in the mammalian brain, particularly in mouse models of Alzheimer’s disease and ... [more ▼]

Recent evidence suggests that thiamine (vitamin B1) and some of its derivatives can exert prominent neuroprotective effects in the mammalian brain, particularly in mouse models of Alzheimer’s disease and tauopathies. As orally administered thiamine crosses intestinal and blood-brain barriers only slowly, precursors with higher bioavailability e.g. sulbutiamine, benfotiamine and dibenzoylthiamine, have been developed. We investigated the protective effects of thiamine and those precursors in neuroblastoma cells cultured in a medium containing minimal amounts of thiamine (10 nM). We induced oxidative stress by incubating the cells (24h) in the presence of the neurotoxic agent paraquat (0.25 mM). This treatment reduced cell viability by 40%. When thiamine or the precursors were present simultaneously, we observed protective effects by the precursors while free thiamine was ineffective.Dibenzoylthiamine was most efficient, affording complete protection of cells at 10-20 μM. It also caused the highest increase in intracellular thiamine, suggesting that the protection from oxidative damage is linked to increased levels of free thiamine (rather than thiamine diphosphate) in the neuroblastoma cells. These results and others from our laboratory raise the possibility that dibenzoylthiamine might useful as a neuroprotective agent in neurodegenerative disease. [less ▲]

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See detailOverall borrowing and borrowing in basic vocabulary: A typological perspective on lexical change in Ancient Egyptian-Coptic
Grossman, Eitan; Polis, Stéphane ULiege

Conference (2017)

The notion of ‘basic vocabulary’ is associated with the name of Morris Swadesh, who proposed a list of 200 (and later 100) items. These lists, widely used in historical and comparative linguistics, were ... [more ▼]

The notion of ‘basic vocabulary’ is associated with the name of Morris Swadesh, who proposed a list of 200 (and later 100) items. These lists, widely used in historical and comparative linguistics, were based on intuition rather than on empirical research. More recently, however, the Leipzig Loanword Typology Project conducted a cross-linguistic survey of loanwords (Haspelmath & Tadmor 2009). One of the results is a 100-item list of basic vocabulary items — the ‘Leipzig-Jakarta list of basic vocabulary.’ This list is the product of four factors, computed for a database of 1440 meanings in 41 languages: borrowability, representation in the database, analyzability / simplicity, and age. As Tadmor (2009) states, this is the first list of basic vocabulary items based on extensive cross-linguistic comparison, and it constitutes a ‘full-fledged basic vocabulary’ that ‘comprises the notions normally associated with this concept: stability (our age score), universality (our representation score) and simplicity (our analyzability score), as well as resistance to borrowing (our unborrowed score)’ (2009: 68). In this talk, we examine this list of 100 meanings in order to evaluate the influence of Greek (Indo- European) on the basic vocabulary of Coptic (Afroasiatic), which shows massive lexical borrowing. First, Coptic data were collected from Crum (1939) for four dialects: Sahidic, Bohairic, Fayyumic, and Akhmimic. Additionally, a questionnaire was submitted to specialists in order to detect Greek loanwords that also lexicalized these meanings. Furthermore, we used etymological dictionaries (Černý 1976; Westendorf 1977; Vycichl 1983) in order to attribute an age score (from 0 = Greek loanword to 4 = Old Egyptian) to the lexemes at two levels: the formal level (when is the word first attested in Ancient Egyptian) and the semantic level (when is the meaning attested in Coptic first associated with this word). As a result of this study, we (1) evaluate the influence of Greek on the basic vocabulary of the main Coptic dialects, (2) describe the basic vocabulary of Coptic dialects independently and to observe how they differ from one another, (3) produce a first estimate of the rate of change in basic vocabularies over the course of Egyptian as a whole. Some of our main findings are as follows: 233 items lexicalize the 100 meanings. Of these, nearly half are attested already in the oldest Egyptian texts; a major peak in lexical replacement is around 1500 BCE, a time of considerable political and cultural upheaval in Egypt. Rates of lexical change do not always correspond to neat semantic categories: while body part terms were generally replaced, semantic categories like perception show heterogeneity (e.g., the verb ‘to hear’ remained throughout the entire history of Egyptian, while the verb ‘to see’ was replaced several times; similarly, ‘to come’ remained stable, while ‘to go’ was replaced several times). All in all, very few of the meanings on the Leipzig-Jakarta list are lexicalized by loanwords in Coptic, and no meanings show complete replacement of a native word by a loanword. This study has broader methodological implications. One is the clear distinction between (and possible independence of) overall lexical borrowing and borrowing of basic vocabulary: while Coptic borrowed an estimated 5000 lexical items (types), with a basic vocabulary borrowing score of 7.53, it is only a low-to-middle borrower in terms of basic vocabulary (cf. Fig. 1). The comparison of scores in overall borrowing vs. borrowing of basic vocabulary raises important questions about the types of socio-historical contact situations that lead to these different situations. [less ▲]

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See detailAnosognosie et monitoring des souvenirs associés au « soi » dans la Maladie d’Alzheimer
Genon, Sarah ULiege; Mélon, Marlène; Collette, Fabienne ULiege et al

Conference (2017)

Chez les patients atteints de maladie d’Alzheimer (MA), on observe dès les stades débutants d’une part un phénomène d’anosognosie, qui peut être considéré comme une altération de la conscience de soi, et ... [more ▼]

Chez les patients atteints de maladie d’Alzheimer (MA), on observe dès les stades débutants d’une part un phénomène d’anosognosie, qui peut être considéré comme une altération de la conscience de soi, et d’autre part un dysfonctionnement des processus de monitoring mnésique [1]. En outre, l’interaction entre le soi et la mémoire (conférant un bénéfice mnésique pour les informations associées à soi), apparaît significativement altérée dans la MA. Dans la présente étude, nous avons examiné les relations entre l’anosognosie et le monitoring lors de la récupération en mémoire d’informations expérimentalement associées à soi. Nous avons évalué les processus de monitoring lors de la récupération en mémoire à l’aide d’une tâche expérimentale de 32 paires visage-prénom, ainsi que l’anosognosie à l’aide du questionnaire d’anosognosie dans la démence (AQD, [2]) chez 20 patients MA et 20 personnes âgées contrôles (AC). Durant la phase d’encodage, les paires visage-prénom ont été présentées aux participants soit comme des personnes faisant partie de leur famille (soi) soit comme des personnes faisant partie de la famille de l’expérimentateur (autrui). Ensuite, nous avons évalué les jugements de « sentiment de savoir » (FOK), les performances de rappel et de reconnaissance, ainsi que les jugements de confiance (JOC) des participants pour le nom de chaque personne lorsque son visage était présenté. Nos résultats ont confirmé l’altération de la conscience de soi (c’est-à-dire l’anosognosie mesurée par l’AQD), l’altération du bénéfice mnésique pour les informations associées à soi, ainsi que l’altération des processus de monitoring lors de la récupération en mémoire (FOK et JOC) chez les patients MA. Néanmoins, une modification de l’interaction entre le soi et les processus de monitoring chez ces patients a été observée uniquement au niveau des sentiments de confiance pour des souvenirs erronés. Nous avons également observé que l’anosognosie des troubles comportementaux était significativement corrélée à la proportion de sentiments de confiance pour des reconnaissances erronées sur les items associés à soi. En conclusion, notre étude suggère que l’altération de la conscience des troubles comportementaux chez les patients MA pourrait être liée à un déficit de monitoring des souvenirs liés à soi. C’est-à-dire que la conscience altérée du dysfonctionnement au quotidien pourrait s’appuyer sur des souvenirs personnels déformés. [less ▲]

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See detailPsychiatrie et liberté : approche phénoménologique
Englebert, Jérôme ULiege; Cormann, Grégory ULiege

Conference (2017)

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See detailL’ECOS en orthophonie : exercer et évaluer les attitudes professionnelles
Martinez Perez, Trecy ULiege; Maillart, Christelle ULiege

Conference (2017)

Introduction L’Examen Clinique Objectif Structuré (ECOS) est utilisé comme un outil pour exercer et évaluer les compétences cliniques des étudiants dans les formations en sciences de la santé ... [more ▼]

Introduction L’Examen Clinique Objectif Structuré (ECOS) est utilisé comme un outil pour exercer et évaluer les compétences cliniques des étudiants dans les formations en sciences de la santé, essentiellement en Médecine (p.e. Hastie et al., 2015) et en Soins infirmiers (p.e. Zhu et al., 2017). L’expérience de ce type de dispositif au niveau de la formation en logopédie/orthophonie est par contre limitée, notamment en Belgique francophone. Dans sa forme classique, l’ECOS consiste en une consultation ou partie de consultation en présence d’un patient simulé (un malade formé, un acteur ou un enseignant), d’un étudiant et d’un évaluateur. Avant de pénétrer dans la pièce de consultation, l’étudiant reçoit quelques informations sur la consultation à réaliser. Ensuite, pendant un laps de temps déterminé, l’étudiant exécute différentes tâches cliniques avec le patient simulé. Les compétences exercées et évaluées chez l’étudiant renvoient majoritairement à des actes techniques et du raisonnement clinique (p.e. Lukas et al., 2012 ; Zhu et al., 2017). Les compétences communicationnelles et relationnelles peuvent également être exercées et évaluées mais ces compétences soulèvent davantage de questions au niveau de la fiabilité des jugements réalisés par l’évaluateur (Selim et al., 2012). Notre communication s’inscrit dans la lignée des études qui se sont plus particulièrement intéressées à l’ECOS comme outil d’évaluation des attitudes professionnelles (et pas seulement cliniques) des étudiants (Bagnasco et al., 2016 ; O’Sullivan et al., 2008 ; Saraiva et al., 2016) Objectif L’objectif de notre communication est double : d’une part, partager notre expérience d’un ECOS formatif avec des étudiants en 3e année d’orthophonie à l’Université de Liège (Belgique) ; d’autre part, présenter les analyses de la fidélité inter-juge de la grille utilisée afin d’évaluer spécifiquement les attitudes professionnelles mobilisées par les étudiants. Méthodologie Au total, 52 étudiants de 3e année en orthophonie à l’Université de Liège (Belgique) ont participé à un ECOS formatif dans le courant de l’année académique 2016-2017. Chaque étudiant a réalisé une station de 7 minutes autour d’une vignette clinique classiquement rencontrée par les orthophonistes. Des secrétaires de l’Université de Liège ont simulé les patients et des orthophonistes ont évalué les comportements des étudiants. Trois questionnaires ont été proposés aux étudiants : un questionnaire préalable à la réalisation de l’ECOS afin d’évaluer leur niveau d’anxiété, de motivation et leur préparation; un questionnaire complété dans la suite de l’ECOS afin de connaître leur regard sur leurs performances ; un questionnaire complété trois jours après l’ECOS afin d’obtenir leur avis sur les aspects organisationnels de l’ECOS. Les réponses des étudiants ont été analysées et sont discutées lors de la communication. Par ailleurs, 12 étudiants choisis aléatoirement ont été filmés pendant leur réalisation de l’ECOS. Ces vidéos ont été visionnées par plusieurs orthophonistes qui complètent la grille d’évaluation des compétences communicationnelles et relationnelles utilisées lors de l’ECOS (dans des conditions standardisées et identiques à celles de l’ECOS réalisé). La fidélité inter-juge a été analysée et les résultats sont discutés lors de la communication. [less ▲]

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See detailLa Célestine versus Lazarillo: un cas de crossover littéraire
Francois, Jeromine ULiege

Conference (2017)

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See detailBlending of Radial HF Radar Surface Current and Model Using ETKF Scheme For The Sunda Strait
Subekti Mujiasih, ULiege; Riyadi, Mochammad; Wandono, Dr et al

Conference (2017)

Preliminary study of data blending of surface current for Sunda Strait-Indonesia has been done using the analysis scheme of the Ensemble Transform Kalman Filter (ETKF). The method is utilized to combine ... [more ▼]

Preliminary study of data blending of surface current for Sunda Strait-Indonesia has been done using the analysis scheme of the Ensemble Transform Kalman Filter (ETKF). The method is utilized to combine radial velocity from HF Radar and u and v component of velocity from Global Copernicus - Marine environment monitoring service (CMEMS) model. The initial ensemble is based on the time variability of the CMEMS model result. Data tested are from 2 CODAR Seasonde radar sites in Sunda Strait and 2 dates such as 09 September 2013 and 08 February 2016 at 12.00 UTC. The radial HF Radar data has a hourly temporal resolution, 20-60 km of spatial range, 3 km of range resolution, 5 degree of angular resolution and spatial resolution and 11.5-14 MHz of frequency range. The u and v component of the model velocity represents a daily mean with 1/12 degree spatial resolution. The radial data from one HF radar site is analyzed and the result compared to the equivalent radial velocity from CMEMS for the second HF radar site. Error checking is calculated by root mean squared error (RMSE). Calculation of ensemble analysis and ensemble mean is using Sangoma software package. The tested R which represents observation error covariance matrix, is a diagonal matrix with diagonal elements equal 0.05, 0.5 or 1.0 m 2 /s 2 . The initial ensemble members comes from a model simulation spanning a month (September 2013 or February 2016), one year (2013) or 4 years (2013-2016). The spatial distribution of the radial current are analyzed and the RMSE values obtained from independent HF radar station are optimized. It was verified that the analysis reproduces well the structure included in the analyzed HF radar data. More importantly, the analysis was also improved relative to the second independent HF radar site. RMSE of the improved analysis is better than first HF Radar site Analysis. The best result of the blending exercise was obtained for observation error variance equal to 0.05 m 2 /s 2 . This study is still preliminary step, but it gives promising result for bigger size of data, combining other model and further development [less ▲]

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See detailInternal return migration in rural of Vietnam: reasons and consequences
Ngo Trung Thanh, ULiege; Lebailly, Philippe ULiege; Nguyen Thi, Dien

Conference (2017)

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See detailEffect of moderate increasing exercice on the mechanical balance of the knee joint in young rats
Rahnamay Moshtagh, Parisa; Korthagen, N; Plomp, S et al

Conference (2017)

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See detailShape and size variations of the bony components of sperm whale cochleae
Schnitzler, Joseph ULiege; Frederich, Bruno ULiege; Früchtnicht, Sven et al

Conference (2017)

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See detailMeasured soil erosion and catchment sediment yield data from Africa: an overview
Vanmaercke, Matthias ULiege; Poesen, Jean; Broeckx, Jente

Conference (2017)

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See detailBenthic contributions to Adriatic and Mediterranean biogeochemical cycles
Capet, Arthur ULiege; Lazzari, Paolo; Spagnoli, Federico et al

Conference (2017)

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See detailRéécrire la Conquête: mélodrame et nostalgie dans l'uchronie
Francois, Jeromine ULiege

Conference (2017)

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See detailGrowth velocity of preterm infants - analysis and recommendations
Fenton, Tanis; Hoyaos, Angela; Groh-Wargo, Sharon et al

Conference (2017)

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See detailNaissance d'un Hôpital de Jour : Quand l'Hôpital Général s'ouvre vers l'Hôpital de Jour Psychiatrique
Valassopoulou, Eftychia; Schmits, Emilie ULiege

Conference (2017)

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See detailGrowth velocity of preterm infants - analysis and recommendations
Fenton, Tanis; Hoyos, Angela; Groh-Wargo, Sharon et al

Conference (2017)

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See detailPegmatite phosphates: from the field to the lab
Hatert, Frédéric ULiege

Conference (2017)

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See detailTime course of familiarity and novelty decisions in aging
Delhaye, Emma ULiege; Bastin, Christine ULiege; Moulin, Christopher et al

Conference (2017)

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See detailMelibea, personaje transficcional del siglo XX
Francois, Jeromine ULiege

Conference (2017)

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See detailVirus Discovery: After the deluge ... ...the framework!!!
Massart, Sébastien ULiege

Conference (2017)

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See detailThe Upper Paleolithic site of Les Prés de Laure (France) sheds new light on Palaeolithic weaponry
Tomasso, Antonin ULiege; Rots, Veerle ULiege; Purdue, Louise et al

Conference (2017)

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See detailLes circuits courts : organisations hybrides sous haute(s) tension(s) ?
Maréchal, Kevin ULiege; Plateau, Lou; Holzemer, Laurence

Conference (2017)

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See detailOn the materiality of research: a multidimensional and multisensory ethnography of food and migration.
Mescoli, Elsa ULiege

Conference (2017)

This paper stems from my doctoral research on the culinary practices of a group of Moroccan women living in Milan hinterland (Italy). Through a praxeological approach to subjectivation , I could study the ... [more ▼]

This paper stems from my doctoral research on the culinary practices of a group of Moroccan women living in Milan hinterland (Italy). Through a praxeological approach to subjectivation , I could study the food issues at stake in the definition of the self at the individual level and in the statement of a shared belonging at the public one. A micro-anthropological analysis of the material culture involved was possible thanks to the combination of some multidimensional and multisensory data. First, the use of audio and video recording devices let me register visual and audio records which were later employed together to reconstruct the environment of the ethnographic set, or separately to break up complex data into different significant parts. Secondly, my own body was the instrument through which I gathered sets of sensory information about my object of study, thus incorporating them to be analysed at a further stage of the research. The use of devices and of my own body throughout my study was also objet of constant reflexivity, addressing both the relationships set between the actors involved and the ethnographer on the basis of such use, and the interferences occurred between different instruments or different sensory levels of the research. This presentation, which will be supported by visual and audio materials, aims at illustrating this research and analysis approach and at proving its relevance for an unconventional study of food issues related to migration. [less ▲]

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See detailProcessus cognitifs et neurobiologiques sous-jacents aux déficits de mémoire épisodique dans la maladie d’Alzheimer
Collette, Fabienne ULiege

Conference (2017)

Les troubles de la mémoire épisodique représentent une des caractéristiques majeures et précoces de la maladie d’Alzheimer. Ces difficultés sont classiquement attribuées à des déficits au niveau de ... [more ▼]

Les troubles de la mémoire épisodique représentent une des caractéristiques majeures et précoces de la maladie d’Alzheimer. Ces difficultés sont classiquement attribuées à des déficits au niveau de l’encodage et de la consolidation de l’information, processus dépendant notamment des régions temporales internes (et plus particulièrement de l’hippocampe) qui sont atteintes très tôt dans le décours de la maladie. Un certain nombre de données récentes ont toutefois amené à raffiner cette conceptualisation initiale. Il est en effet progressivement apparu que des processus très spécifiques sous-tendent la performance aux tâches de mémoire épisodique utilisées en clinique pour le diagnostic de la maladie, tels que la capacité à créer des liens associatifs entre les items ou à créer des représentations mnésiques très distinctives, ou encore la capacité à faire appel à des processus auto-référentiels. L’efficacité de ces processus semble par ailleurs affectée de façon relativement sélective par différents processus neuropathologiques tels que l’atrophie de certaines régions hippocampiques, la diminution de l’épaisseur corticale, la déconnexion entre réseaux cérébraux, la charge amyloide, ou même la présence de facteurs plus subjectifs tels qu’une plainte mnésique. Les troubles de mémoire épisodique associés à la maladie d’Alzheimer semblent donc clairement multidéterminés. En lien avec ces données cognitives et neurobiologiques, nous discuterons également brièvement l’intérêt des classifications actuelles des troubles cognitifs associés au vieillissement pour comprendre le fonctionnement mnésique et ses bases cérébrales. [less ▲]

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See detailHuile d’amande un produit de valorisation de brisures d’amandes issues de décorticage des amandes dans des coopératives de la région Oriental du Maroc
Houmy, Nadia ULiege; Sindic, Marianne ULiege; Fauconnier, Marie-Laure ULiege et al

Conference (2016, December 28)

La culture d’amandier joue un rôle socio-économique important dans plusieurs zones rural du Maroc oriental. Le projet de Filière Amandier (*PROFAO) porte sur l’extension des surfaces plantées d’amandier ... [more ▼]

La culture d’amandier joue un rôle socio-économique important dans plusieurs zones rural du Maroc oriental. Le projet de Filière Amandier (*PROFAO) porte sur l’extension des surfaces plantées d’amandier avec création des nouveaux vergers et des nouvelles unités de concassage des amandes et de valorisation des dérivées d’amandes. En termes de profil variétal les principales variétés plantés dans le cadre du projet PROFAO sont Beldi (Be) Marcona (Mr), et Fournat (Fr) et l’association Ferragnes / Ferraduel (F/F). Le présent travail de recherche appliquée s’intéresse aux possibilités et moyens de valorisation en poste récolte des fruits d’amande et leurs dérivées (Huile d’amande et Tourteau) au niveau des coopératives de la région orientale du Maroc. La récolte des amandes se fait encore par Gaulage, par contre l’extraction des « amandons » de leurs coques, est facilitée par des machines de concassage. Les brisures issues du concassage sont valorisées sous forme d’huile d’amande. Les rendements en huile varient entre un minimum de 51% pour Be et un maximum de 56,6% pour l’association F/F. Le profil en acides gras (AG) se distingue par sa richesse en AG insaturés (principalement des deux AG: Oléique et Linoléique) et une teneur en AG saturés ne dépassant pas les 10%. Ces huiles de brisures d’amandes grâce à leurs teneurs en antioxydant naturels t (Tocophérols), et selon les tests au rancimat présentent de bons indices de stabilité oxydative (OSI) qui varient entre minimum pour l’huile Fr (OSIFr = 20h) et un maximum pour l’huile F/F (OSIF/F= 27h) [less ▲]

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See detailBiostratigraphy of the JLMD-EW8 borehole and palaeogeographic interpretation
Steemans, Philippe ULiege; Breuer, P.; Al-Hajri, S. et al

Conference (2016, December 21)

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See detailLe retour du Loup (Canis lupus) en Belgique : quel(s) rôle(s) pour le secteur associatif?
Geboes, Anne-Laure ULiege; Kohler, Anthony

Conference (2016, December 21)

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See detailSize and Value Matter But Not the Way You Thought
Lambert, Marie ULiege; Fays, Boris ULiege; Hübner, Georges ULiege

Conference (2016, December 20)

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See detail"Osez le Doctorat": contribution orale lors d'un séminaire pour aspirants doctorants
Quintart, Aurélie ULiege

Conference (2016, December 20)

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See detailObservational signatures of past mass-exchange episodes in massive binaries : The cases of HD17505 and HD206267
Raucq, Françoise ULiege; Rauw, Grégor ULiege

Conference (2016, December 19)

Mass and angular momentum exchanges through Roche Lobe Overflow interactions within close massive binaries are known to play an important role in the subsequent evolution of the components of such systems ... [more ▼]

Mass and angular momentum exchanges through Roche Lobe Overflow interactions within close massive binaries are known to play an important role in the subsequent evolution of the components of such systems, and produce several observational signatures, such as asynchronous rotation and altered chemical compositions, that remain once the stars detach again. We have started to investigate these effects in a sample of massive O-star binaries that are thought to have previously experienced a Case A Roche Lobe Overflow episode. Using phase-resolved spectroscopy, we perform the disentangling of the optical spectra of the two stars. The reconstructed primary and secondary spectra are then analysed with the CMFGEN model atmosphere code to determine stellar parameters such as the effective temperatures, surface gravities and rotational velocities, and to constrain the chemical composition of the components. In this contribution, we present the results of our analyses of the triple system HD17505 ([O7V + O7V, P = 8.57 days] + O6.5III). We also present the first results of our analyses of the triple system HD206267 ([O6.5V + O9.5V,P = 3.71 days] + OB). [less ▲]

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See detailTrophic ecology of Southern Ocean sea stars inferred from stable isotopes ratios of C and N
Le Bourg, Baptiste ULiege; Blanchard, Alice; Danis, Bruno et al

Conference (2016, December 17)

The Southern Ocean undergoes strong and contrasted impacts of climate change. Increasing seawater temperature and sea ice cover reduction in Western Antarctic Peninsula and associated regions will likely ... [more ▼]

The Southern Ocean undergoes strong and contrasted impacts of climate change. Increasing seawater temperature and sea ice cover reduction in Western Antarctic Peninsula and associated regions will likely impact food web structure and function. Sea stars (Echinoderms: Asteroidea) are an important group of the Southern Ocean benthos. They typically have highly variable feeding habits and are potentially more resistant than other organisms to temperature changes. Consequently, they will likely be impacted by modifications of the food web rather than by direct warming. Investigating their trophic ecology is therefore necessary to infer how climate change will impact them. In this context, the aim of this study was to use stable isotopes ratios of C, N and S to infer sea stars trophic ecology. During austral summers 2006 and 2009, sea stars were sampled in Subantarctic and Antarctic locations, with most of the samples coming from South Shetland Islands and South Georgia. The isotopic niche (proxy of the trophic niche) associated to each sea star population was explored through SIBER (Stable Isotope Bayesian Ellipses in R) metrics. Stable isotope ratios of sea stars were clearly different between South Shetland Islands and South Georgia. Sea stars of South Shetland Islands had smaller isotopic niches than sea stars of South Georgia. The overlap between the isotopic niches of sea star species was also important in South Shetland Islands, while isotopic niches of South Georgia were well separated. Difference of niche width and overlap between the two regions may be the result of different environmental conditions. In South Shetland Islands, sea star species may exploit a common benthic community relying on organic matter released during sea ice summer melting. In contrast, South Georgia is an oligotrophic environment with no sea ice. As resources are more limited, a higher trophic segregation between sea stars may appear to limit competition. Ultimately, this project highlighted the importance of sea ice in the trophic ecology of Antarctic sea stars. Our results suggest that future reduction of sea ice extent in Western Antarctica may have deleterious effect on sea star populations. [less ▲]

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See detailInterspecific variation of warning calls in piranhas: a comparative analysis
Melotte, Geoffrey ULiege; Vigouroux, Régis; Michel, Christian ULiege et al

Conference (2016, December 17)

Fish sounds are known to be species-specific, possessing unique temporal and spectral features. We have recorded and compared sounds in eight piranha species to evaluate the potential role of acoustic ... [more ▼]

Fish sounds are known to be species-specific, possessing unique temporal and spectral features. We have recorded and compared sounds in eight piranha species to evaluate the potential role of acoustic communication as a driving force in clade diversification. All piranha species showed the same kind of sound-producing mechanism: sonic muscles originate on vertebrae and attach to a tendon surrounding the bladder ventrally. Contractions of the sound-producing muscles force swimbladder vibration and dictate the fundamental frequency. It results the calling features of the eight piranha species logically share many common characteristics. In all the species, the calls are harmonic sounds composed of multiple continuous cycles. However, the sounds of Serrasalmus elongatus (higher number of cycles and high fundamental frequency) and S. manueli (long cycle periods and low fundamental frequency) are clearly distinguishable from the other species. The sonic mechanism being largely conserved throughout piranha evolution, acoustic communication can hardly be considered as the main driving force in the diversification process. However, sounds of some species are clearly distinguishable despite the short space for variations supporting the need for specific communication. Behavioural studies are needed to clearly understand the eventual role of the calls during spawning events. [less ▲]

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See detailImportance de l'utilisation des Systèmes d'Information Géographique pour les vastes sites de plein air du Paléolithique Moyen en France septentrionale. L'exemple de Caours (Somme, France).
Moreau, Gwénaëlle ULiege; Locht, Jean-Luc

Conference (2016, December 17)

During the middle Palaeolithic, the northern France was only occupied by Neanderthals groups. However, successions of glacial and interglacial cycles explain a complex and discontinuous settlement ... [more ▼]

During the middle Palaeolithic, the northern France was only occupied by Neanderthals groups. However, successions of glacial and interglacial cycles explain a complex and discontinuous settlement, raising complication in the study of its dynamics at a regional scale. Therefore, some aspects of Neanderthals behaviour are still mischaracterize: in most cases, the function of the site and its territorial management over the northern France have to be specified. The spatial analysis of open air sites from northern France will help us to answer those questions. However, for Middle Palaeolithic sites, we can’t see systematically on the field the spatial organisation directly, we sometimes need modelization. Therefore, we started to build a spatial analysis protocol adapted to this site and applied to such sites. The sites of Caours (Somme, France) and Beauvais (Oise, France) are two open air sites that are exceptionally well preserved and displaying a large amount of faunal and lithic rests. Both are perfect candidate to apply and test the new protocol. First results proved that for each site the existence of a spatial organisation as remains concentration zones. Then, we characterize this areas – number, distribution. Finally, we were able to associate them to human activity areas like hearths, butchery or knapping areas. [less ▲]

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See detailManufacture and use of points at Maisières-Canal
Touzé, Olivier ULiege; Coppe, Justin ULiege; Taipale, Noora ULiege et al

Conference (2016, December 17)

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See detailStream-aquifer interactions: a combined field - methodological approach in fractured carbonate catchments
Brouyère, Serge ULiege; Briers, Pierre ULiege; Orban, Philippe ULiege et al

Conference (2016, December 16)

Stream-aquifer studies remain a challenge due to numerous factors impacting these interactions. They play a fundamental role in terms of quantity and quality of water, in particular on the ecological ... [more ▼]

Stream-aquifer studies remain a challenge due to numerous factors impacting these interactions. They play a fundamental role in terms of quantity and quality of water, in particular on the ecological status of rivers. Field quantification of such interactions is a first step but it has to be in relation with the whole budgets of water and transported substances across the catchment in order to represent their importance on overall fluxes. Numerous complementary investigations have to be undertaken to achieve such understanding of catchment behavior, in particular to estimate specific indicators and to achieve representative data for modeling stream-aquifer interactions. From that situation, our study aims to characterize and quantify stream-aquifer interactions to assess reliability of diverse field experiments methodologies. A catchment has been studied for 3 years in quantitative and qualitative ways via a dense instrumentation and monitoring. Numerous complementary investigations (discharge measurements, hydrogeochemistry, distributed temperature sensing, base flow separation…) have been applied to reach the objectives. We achieved a large and diversified measurement dataset of groundwater-surface water interactions and whole water budget. This allowed reaching an improved understanding of the catchment behavior to quantify importance of the groundwater component on the dynamics and chemistry of the stream and on the consequences on river ecological status. The investigations on several subcatchments allows also to propose a general typology of stream catchment in terms of groundwater dependence based on the combination of various groundwater contexts and groundwater-stream interaction indicators. Methodologies applied in this study allow to emphasize strength and weakness of numerous investigations in a stream aquifer project and conclusions can be reproduced and generalized to other contexts. [less ▲]

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See detailChapter VIII "Equations and languages" in J.-É. Pin, Mathematical Foundations of Automata Theory
Stipulanti, Manon ULiege

Conference (2016, December 16)

We present the chapter VIII titled "Equations and Langages" in Jean-Éric Pin, Mathematical Foundations of Automata Theory.

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See detailWho would want to live in there? A history of Posidonia oceanica detritus accumulations, the associated invertebrate community, and its food web…
Remy, François ULiege; Michel, Loïc ULiege; Darchambeau, François ULiege et al

Conference (2016, December 16)

Most seagrasses are rarely consumed directly by herbivore organisms. The "detrital pathway" thus represents a potentially important way of transfer of the seagrasses production to the coastal food webs ... [more ▼]

Most seagrasses are rarely consumed directly by herbivore organisms. The "detrital pathway" thus represents a potentially important way of transfer of the seagrasses production to the coastal food webs. The case of Posidonia oceanica is particularly interesting since up to 90% of its foliar primary production may constitute extensive and highly dynamic exported litter accumulations. Preliminary studies concerning these detritus accumulations suggest that an abundant community of vagile macro invertebrates (size > 500μm) lives inside them. We characterized for the first time this community in an exhaustive way (multi-site, seasonal and multi-year study), we linked the observed density and diversity variations to environmental parameters, but also described the trophic web these invertebrates compose. We sampled an abundant (up to 5000 organisms/m²) community composed of 115 species. We showed that crustaceans were massively dominant, followed by annelids and mollusks, and that one single amphipod species Gammarella fucicola represented from 20 to 85% of the whole sampled community. Observed variations appeared to be mostly linked to litter oxygen water concentration in a very species specific way. Most species were linked to no measured environmental parameter at all, but several dominant species were demonstrated (observation and in situ experimentation) to be linked positively or negatively to litter oxygen concentration. The described food web was composed of more than 3 trophic levels, indicating the presence of a trophic web composed of primary consumers/detritivore species, of omnivore species, but also of first and second order predators, each level occupying a distinct isotopic niche. From a specific point of view, we highlighted several different feeding preferences, with SIAR mixing model runs indicating that some species feed mostly on detrital material, other species feed on a mixture of detrital and algal material, other species feed on both animal and vegetal material and finally predator species feed exclusively on animal material. The fact that P. oceanica detritus constituted a non-negligible food source for some dominant species confirmed the importance of this macrofauna community as a key transfer link of seagrass organic matter from P. oceanica to the coastal food webs. [less ▲]

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See detailRelationship between jaw morphology, bite performance and diet in Serrasalmidae (Characiformes, Teleostei)
Huby, Alessia ULiege; Lowie, Aurélien; Herrel, Anthony et al

Conference (2016, December 16)

Serrasalmidae are mainly known for “piranhas” and their negative reputation of ferocious predatory fishes. A recent study demonstrated that the piranha $Serrasalmus rhombeus£ had an extreme bite force ... [more ▼]

Serrasalmidae are mainly known for “piranhas” and their negative reputation of ferocious predatory fishes. A recent study demonstrated that the piranha $Serrasalmus rhombeus£ had an extreme bite force that is even proportionally greater than that of the white shark. However, these sharp teeth fishes represent only a minority of Serrasalmidae. Other serrasalmid species (pacus and myleus) feed on plants, fruits or seeds and their bite force and feeding capacities are still uninvestigated. In the present research, in vivo bite forces were measured and compared according to jaw morphology in ten species of Serrasalmidae including six herbivorous and four carnivorous species. The Bite Force Quotient (BFQ) was calculated for each individual to compare the jaw strength across species. The results of the analysis showed that species feeding on fins and fish flesh have a significant greater bite force than species feeding on plants, fruits or seeds. This difference can be explained by the larger adductor mandibulae muscle in carnivorous species which have comparatively longer and higher skull than herbivorous species. In addition, there is a significant difference in the lower jaw morphology between piranhas and pacus and relatives. The piranha species have longer lower jaws than pacus and myleus species which have shorter and higher lower jaws. This study shows that the Serrasalmidae family regroups remarkable biters whose bite performance is mostly related to diet. [less ▲]

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See detailHydrothermal synthesis of tailored new  promising phosphate particles for lithium and sodium ion batteries
Karegeya, Claude ULiege; Mahmoud, Abdelfattah ULiege; Sougrati Tahar, Moulay et al

Conference (2016, December 16)

The rechargeable Li-ion batteries dominate the currently used storage systems due to their unrivalled electrochemical properties. However, this technology needs more improvements to meet coast, high ... [more ▼]

The rechargeable Li-ion batteries dominate the currently used storage systems due to their unrivalled electrochemical properties. However, this technology needs more improvements to meet coast, high capacity, safety and environmental requirements. Current researches on Li-ion batteries are focusing on the development of safe and cheap electrode compounds with good electrochemical performance. Iron phosphate-based electrodes have attracted increasing interest due to their environmental compatibility, low cost and its promising electrochemical performance as positive electrode materials in LIB. In this work, we report the electrochemical properties of Fex(PO4)(OH)y.zH2O) cathode material obtained by one-pot hydrothermal synthesis route, a technique which produces the particles with suitable properties for electrode application. We show that the addition of a conducting carbon (carbon black or carbon nanotubes) into the solution has a strong influence on reducing the size and tailoring morphology of material particles. These are among the main factors to enhance the electrochemical performance of the material. Combined with electrochemical and XRD studies, operando Mössbauer analysis shows that Fex(PO4)(OH)y.zH2O) undergoes a reversible reduction/oxidation during lithium intercalation/ deintercalation processes. Acknowledgments This work was supported by the Walloon Region through the BATWAL project [PE Plan Marshall 2.vert]; and the Beware Fellowship Academia [2015-1, RESIBAT n° 1510399]. [less ▲]

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See detailDe niet-toepassing van de mainplévie in Maastricht
Lagasse, Benoît ULiege

Conference (2016, December 16)

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Peer Reviewed
See detailLabels du patrimoine culturel, ordres juridiques et effectivité de la norme
Desseilles, François ULiege

Conference (2016, December 15)

Detailed reference viewed: 31 (4 ULiège)
See detailBIM état de la situation
Boutemadja, Abdelkader ULiege

Conference (2016, December 15)

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See detailTraduction et jeu dans le théâtre de Marius von Mayenburg et Nurkan Erpulat
Neelsen, Sarah ULiege

Conference (2016, December 15)

La violence est au cœur des deux pièces de théâtre germanophones contemporaines Verrücktes Blut et Märtyrer, qui illustrent les confrontations quotidiennes au sein d’une salle de classe, où chacun s’est ... [more ▼]

La violence est au cœur des deux pièces de théâtre germanophones contemporaines Verrücktes Blut et Märtyrer, qui illustrent les confrontations quotidiennes au sein d’une salle de classe, où chacun s’est crispé sur ses positions et menace de se radicaliser. Les rôles sont figés, les paroles gelées et plus aucune interaction ne semble possible. Dans cette Babel contemporaine, la diversité des langues et des langages ne permet plus de négocier du commun. Pour remettre du jeu sur scène et dans les rapports humains, Erpulat et Mayenburg convoquent la traduction dans toutes ses formes. Entre les langues, puisque tous les personnages manient au moins deux idiomes, en général le turc et l’allemand. Entre sociolectes, c’est-à-dire une langue dite « standard » (Hochdeutsch) devenue, dans le cadre scolaire, un technolecte autoritaire et pauvre, et la « Kanak Sprak » dévaluée car bâtarde et agressive. Entre les époques, puisqu’un texte classique est l’objet même du conflit (Schiller dans un cas, la Bible dans l’autre), et s’avère incompréhensible tant que son caractère canonique interdit toute réinterprétation. Les vertus de la traduction comme actualisation, négociation et déplacement du sens sont donc mises à profit au cours de la représentation afin d’interroger et de renouveler les modalités de la transmission épistémologique. Ce sont ces rapports entre traduction et « jeu », terme emprunté notamment à l’Education esthétique de l’homme (1794), cité longuement dans l’une des pièces et où Schiller écrit que « l’homme n’est tout à fait homme que lorsqu’il joue », qu’on examinera dans cette communication. [less ▲]

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See detailTraduction et musique: le cas de Leonard Cohen
Mus, Francis ULiege

Conference (2016, December 15)

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See detailEnjeux de l’intervention auprès de parents dans un contexte de vulnérabilité psychosociale
Halin, Stéphanie ULiege; Fohn, Bruno; Glowacz, Fabienne ULiege

Conference (2016, December 15)

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See detailDétours et retours du roman hispano-américain du XXe siècle : naissance d'un projet de thèse
Belleflamme, Clémence ULiege

Conference (2016, December 15)

Présentation d'un projet de thèse doctorale portant sur les retraductions en français de romans hispano-américains de la deuxième moitié du XXe siècle.

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See detailIntroduction à la perspective en première personne : le cas de l’anorexie
Englebert, Jérôme ULiege

Conference (2016, December 15)

La distinction des perspectives en première et troisième personnes est un apport récent et décisif de la phénoménologie à la psychopathologie (Parnas, Sass & Zahavi, 2012). La perspective en troisième ... [more ▼]

La distinction des perspectives en première et troisième personnes est un apport récent et décisif de la phénoménologie à la psychopathologie (Parnas, Sass & Zahavi, 2012). La perspective en troisième personne, campée par les dernières versions du DSM ou par l’evidence based medicine, consiste en l’attribution depuis une position externe de signes cliniques repérés indépendamment du ressenti exprimé par le patient. L’exemple typique de ces signes est le délire et l’hallucination du schizophrène. Ces symptômes cristallisent les difficultés qu’éprouve le sujet à se reconnaitre affecté du trouble (l’anosognosie), et ce point est considéré par les modèles dominants comme une cible thérapeutique prioritaire. La visée de ces techniques, orthopédiques et psycho-éducatives, est que le patient parvienne à « reconnaitre » sa maladie. Selon cette perspective en troisième personne, il est attendu qu’il adopte, intègre la position propre à son évaluateur, et externe à sa subjectivité intrinsèque. La démarche opposée, celle de la prise en considération d’une perspective en première personne, interroge, considère et concentre son attention sur l’expérience subjective exprimée par le patient. Si l’on reprend l’exemple princeps de la schizophrénie, ce sont la « perte de l’évidence naturelle » des choses, un « trouble du sens commun » ou un « sentiment de diminution du soi » que verbalisent les patients. Ces signes cliniques, révélant l’expérience du soi, deviennent l’élément psychopathologique structurant et mettent en évidence une manière d’être-au-monde, ici schizophrénique. Le pari de cette journée d’étude consacrée à l’anorexie est de chercher à appliquer ce passage vers une perspective compréhensive en première personne pour les sujets affectés de ce trouble. Des travaux pionniers en la matière, bien que ne se réclamant pas de la phénoménologie, sont certainement ceux du psychiatre éthologue liégeois Albert Demaret (1979). Celui-ci, suggère, de façon quelque peu déconcertante, de ne plus focaliser l’attention prioritairement sur l’aspect purement médical relatif à la perte de poids et au refus alimentaire. Le comportement qui retient particulièrement son attention est l’altruisme (souvent alimentaire), qu’il considère comme « la composante la plus fondamentale du syndrome » (p. 152). Outre le fait de révéler les composantes adaptatives du trouble, son étonnant modèle permet d’entrer en consonance avec le discours des patients anorexiques qui, bien souvent, ne perçoivent pas leur minceur (mécanisme de déni) ou expriment que leur problématique ne se situe pas, selon eux, dans leur sous-alimentation. L’anosognosie anorexique et cet effroyable tendance à se priver d’alimentation au risque de mettre sa vie en danger, si l’on ouvre la porte à la perspective en première personne – si on laisse la parole au sujet –, laissent la place à un besoin (dont l’excessivité peut être reconnue) de s’occuper des autres, de les nourrir, mais aussi une hyper-attention au regard qu’on leur porte. L’investissement émotionnel et corporel des relations est souvent présenté comme étant insatisfaisant, voire comme étant l’élément moteur de leur mal-être. Ce pas de côté de la vision omnisciente du médical, assumant une remise en cause du pouvoir de domination qu’entraine la perspective en troisième personne, se révèle être un outil psychothérapeutique tout à fait pertinent. Il désacralise le problème de l’anosognosie, remet en cause le déni (ce mécanisme devient également celui de l’entourage de l’anorexique qui ne peut percevoir le surinvestissement altruiste), et ouvre la voie à une perspective intersubjective, co-construite. Cette journée d’étude a pour ambition de mettre en lumière cette préoccupation pour l’éprouvé anorexique, évoquer les modes de communication de ces patients et laisser place au discours qu’ils ont souvent du mal à livrer. Il se révèle que les apports de disciplines comme la philosophie ou l’anthropologie, ainsi que ceux de la pratique clinique sont des détours essentiels à ce programme d’étude. Nous discuterons également du symptôme anorexique lorsqu’il est secondaire à un psychotraumatisme (quelle place cette tendance à la restriction vient combler dans l’expérience de vie du sujet traumatisé). Cette journée est ouverte tant aux praticiens de terrain et personnes intéressées par les matières cliniques qu’aux chercheurs universitaires en sciences humaines. [less ▲]

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See detailHealth literacy en Belgique : diagnostic et pistes d’interventions
Bragard, Isabelle ULiege; Pétré, Benoît ULiege; Coucke, Philippe ULiege et al

Conference (2016, December 14)

Detailed reference viewed: 51 (7 ULiège)
See detailQuadratic reformulations of nonlinear binary optimization problems
Crama, Yves ULiege

Conference (2016, December 14)

Detailed reference viewed: 16 (0 ULiège)
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See detailHow tree architecture varies across coexisting tropical tree species and relate to ecological strategies?
Loubota Panzou, Grâce Jopaul ULiege; Ligot, Gauthier ULiege; Loumeto, Jean-Joël et al

Conference (2016, December 14)

Architecture refers to the overall shape of a tree and the spatial position of its components. Tree height determines the position in the forest canopy and access to light, while the amount and spatial ... [more ▼]

Architecture refers to the overall shape of a tree and the spatial position of its components. Tree height determines the position in the forest canopy and access to light, while the amount and spatial distribution of the foliage depend on the depth and the width of the crown. The aim of this study is to understand how tree architecture varies across coexisting tropical tree species and relates to ecological strategies. Forty five coexisting tree species were sampled in the semi-deciduous forests of Northern Congo. Species were classified according to ecological strategies, specifically regeneration guilds: shade bearers (27 species), non-pioneers light demanding (14 species) and pioneers (4 species). For each species, 14–72 trees (968 trees in total) were measured over a large range of diameter (10–162 cm). At the tree level, we measured the diameter (D in cm), height (H in m), crown radius (Cr in m) and crown depth (Cd in m) and crown exposure index (CEI) was visually estimated. At species level, architectural traits were estimated at juvenile tree with diameter of 10 cm (H10, Cr10 and Cd10) and at adult stature with maximum diameter (Hmax, Crmax and Cdmax), life history traits (dispersal mode, phenology and regeneration guild) and functional traits (wood density and light requirement) were obtained. Our results showed a significant variation in tree allometry between coexisting species. The interspecific variation was related to light requirement (H-D allometry), dispersal mode (Cr-D allometry) and liana infestation (Cd-D allometry). Large-statured tree species were light demanding, deciduous and wind dispersed, while small-statured tree species were evergreen, dense wooded, and animal dispersed. Architectural traits strongly differed between regeneration guilds. [less ▲]

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See detailPrésentation des activités du PCNSW
Legrain, Xavier ULiege; Michel, Brieuc ULiege; Roda, Mathilde ULiege et al

Conference (2016, December 14)

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See detailA class of valid inequalities for multilinear 0-1 optimization problems
Rodriguez Heck, Elisabeth ULiege; Crama, Yves ULiege

Conference (2016, December 14)

Detailed reference viewed: 31 (1 ULiège)
See detailNouveautés en matière d’accès à un avocat - Directive et loi « Salduz II »
Jacques, Elodie ULiege

Conference (2016, December 13)

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See detailJupiter’s auroras during the Juno approach phase as observed by the Hubble Space Telescope
Nichols, Jonathan D; Clarke, John T; Orton, Glennn S et al

Conference (2016, December 13)

We present movies of the Hubble Space Telescope (HST) observations of Jupiter’s FUV auroras observed during the Juno approach phase and first capture orbit, and compare with Juno observations of the ... [more ▼]

We present movies of the Hubble Space Telescope (HST) observations of Jupiter’s FUV auroras observed during the Juno approach phase and first capture orbit, and compare with Juno observations of the interplanetary medium near Jupiter and inside the magnetosphere. Jupiter’s FUV auroras indicate the nature of the dynamic processes occurring in Jupiter’s magnetosphere, and the approach phase provided a unique opportunity to obtain a full set of interplanetary data near to Jupiter at the time of a program of HST observations, along with the first simultaneous with Juno observations inside the magnetosphere. The overall goal was to determine the nature of the solar wind effect on Jupiter’s magnetosphere. HST observations were obtained with typically 1 orbit per day over three intervals: 16 May – 7 June, 22-30 June and 11-18 July, i.e. while Juno was in the solar wind, around the bow shock and magnetosphere crossings, and in the mid-latitude middle-outer magnetospheres. We show that these intervals are characterised by particularly dynamic polar auroras, and significant variations in the auroral power output caused by e.g. dawn storms, intense main emission and poleward forms. We compare the variation of these features with Juno observations of interplanetary compression regions and the magnetospheric environment during the intervals of these observations. [less ▲]

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See detailSearch for low-latitude atmospheric hydrocarbon variations on Jupiter from Juno-UVS measurements
Hue, Vincent; Gladstone, Randy; Greathouse, Thomas et al

Conference (2016, December 13)

The Juno mission offers the opportunity to study Jupiter, from its inner structure, up to its magnetospheric environment. Juno was launched on August 2011 and its Jupiter orbit insertion (JOI) occurred on ... [more ▼]

The Juno mission offers the opportunity to study Jupiter, from its inner structure, up to its magnetospheric environment. Juno was launched on August 2011 and its Jupiter orbit insertion (JOI) occurred on July 4th 2016. The nominal Juno mission involves 35 science polar-orbits of 14-days period, with perijove and apojove distances located at 0.06 Rj and 45 Rj, respectively. Juno-UVS is a UV spectrograph with a bandpass of 70<λ<205 nm, designed to characterize Jupiter UV emissions. One of the main additions of UVS compared to its predecessors (New Horizons- and Rosetta- Alice, LRO-LAMP) is a 2.54 mm tantalum shielding, to protect it from the harsh radiation environment at Jupiter, and a scan mirror, to allow for targeting specific auroral and atmospheric features at +/- 30˚ perpendicular to the Juno spin plane. It will provide new constraints on Jupiter’s auroral morphology, spectral features, and vertical structure, while providing remote-sensing constraints for the onboard waves and particle instruments. It will also be used to probe upper-atmospheric composition through absorption features found in the UV spectra using reflected solar UV radiation. For example, stratospheric hydrocarbons such as C2H2 and C2H6 are known to absorb significantly in the 150-180 nm regions, and these absorption features can be used to determine their abundances. We will present our search for the spectroscopic features seen in Jupiter’s reflected sunlight during the first perijove. [less ▲]

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See detailHistory and Sociology of French Video Game Magazines
Dozo, Björn-Olav ULiege

Conference (2016, December 13)

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See detailPhysicochemical properties of African wild mango (Irvingia gabonensis) seed fat and its potentialities in food industries
Yamoneka Wasso, Juste ULiege

Conference (2016, December 13)

African wild mango (Irvingia gabonensis) is recognized for its numerous food and medicinal uses (Leakey et al., 2005). This plant produces seeds rich in fat, which is traditionally used as a soup ... [more ▼]

African wild mango (Irvingia gabonensis) is recognized for its numerous food and medicinal uses (Leakey et al., 2005). This plant produces seeds rich in fat, which is traditionally used as a soup thickener (Adeyeye & Kenni, 2011; Kayode et al., 2010; Leakey et al., 2005). In the present study, fat from I. gabonensis seeds was solvent extracted and characterized. Melting and crystallization behaviour of the extracted fat was studied by pNMR, DSC and X-ray diffraction in order to get basic information regarding its physical properties and more particularly, about its polymorphism and its applicability in food industries. Results of this investigation showed that this seed represent an important source of lipids (69-75 g/100 g), rich in myristic (49.8 g/100 g) and lauric acid (37 g/100 g). Due to his high saturated fatty acids content, I. gabonensis fat (IGF) presents a high SFC (solid fat content) at room temperature. The melting profiles of IGF can be compared to that of cocoa butter, but the melting point of IGF is higher, even after tempering, which has moreover no effect on IGF properties. This fat remains solid at temperatures up to 30°C and the complete melting was detected at around 40°C. The most stable polymorph of this fat is the β’1-form, even after tempering and storage. Due to this high melting point, IGF could be used in fat blends, as hard stock, for structured product formulation (i.e margarine, shortenings and cacao butter substitute). [less ▲]

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See detailInitial observations of Jupiter’s aurora from Juno’s Ultraviolet Spectrograph (Juno-UVS)
Gladstone, Randy; Versteeg; Greathouse, Thomas et al

Conference (2016, December 13)

Juno-UVS is an imaging spectrograph with a bandpass of 70<λ<205 nm. This wavelength range includes important far-ultraviolet (FUV) emissions from the H2 bands and the H Lyman series which are produced in ... [more ▼]

Juno-UVS is an imaging spectrograph with a bandpass of 70<λ<205 nm. This wavelength range includes important far-ultraviolet (FUV) emissions from the H2 bands and the H Lyman series which are produced in Jupiter’s auroras, and also the absorption signatures of aurorally-produced hydrocarbons. The Juno-UVS instrument telescope has a 4x4 cm2 input aperture and uses an off-axis parabolic primary mirror. A flat scan mirror situated near the entrance of the telescope is used to observe at up to ±30° perpendicular to the Juno spin plane. The light is focused onto the spectrograph entrance slit, which has a “dog-bone” shape, with three sections of 2.55°x0.2°, 2.0°x0.025°, and 2.55°x0.2° (as projected onto the sky). Light entering the slit is dispersed by a toroidal grating which focuses FUV light onto a curved microchannel plate (MCP) cross delay line (XDL) detector with a solar blind UV-sensitive CsI photocathode. The two mirrors and the grating are coated with MgF2 to improve FUV reflectivity. Tantalum surrounds the spectrograph assembly to shield the detector and its electronics from high-energy electrons. All other electronics are located in Juno’s spacecraft vault, including redundant low-voltage and high-voltage power supplies, command and data handling electronics, heater/actuator electronics, scan mirror electronics, and event processing electronics. The purpose of Juno-UVS is to remotely sense Jupiter’s auroral morphology and brightness to provide context for in situ measurements by Juno’s particle instruments. Here we present the first near-Jupiter results from the UVS instrument following measurements made during PJ1, Juno’s first perijove pass with its instruments powered on and taking data. [less ▲]

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See detailNanoparticles-nanosubstrates hybrids through one pot synthesis by plasma treatment: towards optimization of Pt/carbon catalysts for PEM fuel cells
Busby, Yan; Gulas, Michal; Laurent-Brocq, Mathilde et al

Conference (2016, December 12)

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See detailExploitation of coastal fish communities by harbour porpoises Phocoena phocoena during nursing periods in German Baltic waters.
Pinzone, Marianna ULiege; Michel, Loïc ULiege; Gallus, Anja et al

Conference (2016, December 11)

Baltic sub-populations of harbour porpoises Phocoena phocoena meet in in Southwestern waters in Spring when females reach the coastal areas for calving and nursing. In Autumn they separate again for ... [more ▼]

Baltic sub-populations of harbour porpoises Phocoena phocoena meet in in Southwestern waters in Spring when females reach the coastal areas for calving and nursing. In Autumn they separate again for reproduction : the Belt sea populations westwards in the Kattegat/Skarregat region, the Baltic proper population northwards in the central basin. The increased number of juvenile and newborn strandings along the German Baltic coasts give evidence for a possible existence of local calving grounds in this area. Calving and nursing habitats are the most important areas for management purposes. This project aimed to describe inhabitancy and diet of females and calves along the German Baltic coast, in order to achieve effective conservation measures. Nitrogen, carbon and, for the first time, sulphur stable isotopes (δ13C, δ15N and δ34S) were analysed in coastal species of fish and invertebrates in spring, autumn and winter 2015/2016 and in four different areas, to assess for seasonal and geographical variation of porpoises habitat use. The structure of ecological niches was inferred within and between communities using the SIBER model, and was compared to results from stomach content analysis. N, C and S values of fish and invertebrates strongly varied, seasonally and geographically, as a consequence of environmental factors characteristic of each sampling area. Additionally, each species presented large isotopic variability, suggesting possible intraspecific dietary specialisations. Females δ13C and δ34S signatures integrated both open-waters and coastal feeding, while juveniles presented a more coastal distribution. The absence of difference in δ15N values between age classes confirmed persistence of milk assimilation from the mothers. Niches structures and overlaps and stomach content analysis suggested gobies (Potamoschistus spp and Neogobius spp in particular), crabs and small coastal fish (ex. three-spined stickleback) as the main preys of juveniles. The integration of all three stable isotopes together permitted to well delineate even the highly dynamic food web of the Baltic German waters, confirming the use of sulphur isotopes in marine ecological studies. [less ▲]

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See detailNi visionnaires, ni obsolètes : penser les récits d'anticipation dans l'histoire (littéraire)
Stienon, Valérie ULiege

Conference (2016, December 09)

Situer le récit d’anticipation dans l’histoire des pratiques culturelles, en particulier dans l’histoire littéraire, est une démarche problématique à plus d’un titre. L’une des résistances majeures est la ... [more ▼]

Situer le récit d’anticipation dans l’histoire des pratiques culturelles, en particulier dans l’histoire littéraire, est une démarche problématique à plus d’un titre. L’une des résistances majeures est la tendance normative à réinterpréter les textes concernés en les classant soit dans les œuvres visionnaires géniales à sauver ponctuellement de l’oubli, soit dans les nombreuses prophéties non advenues ayant périmé à juste titre. Récit bref, roman ou essai fictionnel, le texte d’anticipation semble de la sorte condamné à cette réception binaire qu’il programme dans son pacte de lecture. Il s’emploie à traiter du futur alors même qu’il est étroitement lié à son premier contexte d’écriture par les réseaux éditoriaux, les supports médiatiques et les référents des représentations qui le composent. Cela contribue à le dater très fortement et à restreindre sa postérité à l’adéquation entre une visée prospective de la fiction et sa validation par l’Histoire. Le cas du récit d’anticipation invite ainsi à étudier la durée de vie de certaines productions culturelles au regard des constructions rétrospectives qui en sont faites : dans quelle mesure l’obsolescence contrainte d’un certain corpus littéraire peut-elle aider à penser la généricité dans l’histoire ? Les exemples choisis porteront sur un corpus francophone situé entre 1800 et 1950, période précédant l’émergence des collections françaises de science-fiction. On examinera spécifiquement les trois cas de figure suivants : les assises idéologiques du discours social (progrès, hygiénisme, saint-simonisme) chez Émile Souvestre (Le monde tel qu’il sera, 1846) ; l’anticipation mêlée à la satire journalistique dans l’œuvre d’Albert Robida et le tropisme du spectacle (théâtre, féérie, magie) dans l’esthétique du « merveilleux scientifique ». [less ▲]

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See detailLa démocratie liquide au sein du Parti Pirate belge
Macq, Hadrien ULiege

Conference (2016, December 09)

This communication aims at describing how the Belgian Pirate Party implements a system of Liquid Democracy on an online platform.

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See detailComic strips et papier glacé. Rétro-réflexivité de la bande dessinée chez Cole Closser
Crucifix, Benoît ULiege

Conference (2016, December 09)

La « rétromania » bat son plein dans le champ de la bande dessinée qui, aujourd'hui, ne compte plus les rééditions luxueuses des œuvres, canoniques ou oubliées, de son passé1. Les Sunday comics, pages ... [more ▼]

La « rétromania » bat son plein dans le champ de la bande dessinée qui, aujourd'hui, ne compte plus les rééditions luxueuses des œuvres, canoniques ou oubliées, de son passé1. Les Sunday comics, pages dominicales des quotidiens américains où paraissaient en couleur le supplément de bande dessinée, ont fait l'objet d'une attention toute particulière, comme en atteste les rééditions à l'échelle originale réalisées par Sunday Press, magnifiant ces œuvres éphémères au sein d'ouvrages monumentaux. Art Spiegelman et Chris Ware, auteurs clés du roman graphique, ont directement été impliqués dans de tels projets, manifestant une continuité entre ces Sunday pages et leurs propres expérimentations avec la forme, illustrant bien l'adage de Spiegelman, « the future of comics is in the past ». La bande dessinée contemporaine, donc, semble être crucialement située à l'intersection d'une fascination rétrospective pour son passé, et d'une réinvention de ce passé, de l'exploration de « nouvelles » formes. Partant de ce contexte précis, qu'il s'agira d'approfondir, cette présentation examinera les Sunday comics comme « objets en mouvement » à travers l'œuvre de Cole Closser2, qui manifeste une « rétro-réflexivité3 » basée sur l'imitation non seulement du style de comic strips mais aussi sur l'évocation de leurs récentes rééditions. Closser mélange outils numériques et techniques obsolètes pour produire quelque chose qui veut se faire passer pour un objet du passé. L'œuvre de Closser ainsi met en avant les aspects matériels et haptiques liés à la reproduction de « vieux » comic strips, ainsi que le fétichisme lié à cette mise en scène matérielle de ces objets telle qu'on peut la trouver dans les designs des livres de Dan Nadel ou Chip Kidd4. Le cas de Closser est paradigmatique de la manière dont cette forme de rétro-réflexivité dépasse la question d'intertextualité pour interroger comment de « vieilles » bandes dessinées re-circulent en tant qu'objets au sein de la production contemporaine et donc au-delà du marché des collectionneurs. À partir du cas de Closser, cette présentation cherchera à mettre en lumière différents usages que ces objets du passé de la bande dessinée recouvrent au cœur du roman graphique contemporain, cartographiant un mouvement simultanément rétrospectif et orienté vers le futur. [less ▲]

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See detailChapter VII "Varieties" in J.-É. Pin, Mathematical Foundations of Automata Theory
Massuir, Adeline ULiege

Conference (2016, December 09)

Presentation of the chapter VII, "Varieties", in Jean-Éric Pin, Mathematical Foundations of Automata Theory.

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See detailThe (non)-Effects of Public Experiments on High-Level Radioactive Waste Programs
Parotte, Céline ULiege

Conference (2016, December 09)

Siting processes of high-level radioactive wastes remain a sensitive step for nuclear waste management organizations. At this stage, radioactive wastes programs become highly visible. Such concreteness ... [more ▼]

Siting processes of high-level radioactive wastes remain a sensitive step for nuclear waste management organizations. At this stage, radioactive wastes programs become highly visible. Such concreteness increases controversies leading to modification or temporary standstill of the program (see e.g. strong local oppositions in the 80’s in Canada and in France). These controversies have often forced nuclear waste management organizations to include larger societal groups (civil society, NGO’s, parliamentarians, lay people,…) and to recognize the societal dimension of such issue. The program is thus recognized as a sociotechnical one, compelling authorities to a new approach to territorial development (Leloup 2010). At the local scale, new instruments and strategies have been adopted and implemented to tackle this territorial question. One of these tools is the local information committee. Considering nuclear waste management as an art of government (Dean, 2010), this presentation focuses on the siting processes of radioactive wastes programs and analyzes the coproduction between territory and program (Jasanoff 2004). It therefore studies the influence on the programs of the local publics through their local information committee in two specific cases: the French and the Canadian high-level radioactive wastes programs. To do so, it mobilizes official documents, participatory observations, two ethnographic fieldworks (Bure – France and Manitouwadge, Ignace, Schreiber and Nipigon – Canada), and semi-structured interviews. These interviews were conducted with French and Canadian nuclear waste management organizations’ member, regulators, local representatives and local consultation committee’s members. In analyzing such siting processes, we first analytically describe the shift from a national radioactive waste management program to a territorialized management in France and in Canada. Second, it aims at understanding the concrete and sometimes unanticipated effects of implementing a management program at the local level by focusing on the integration of local publics and stakeholders in the decision-making of such processes. Finally, it discusses the dual relationship between program and territory in these processes. Our results highlight that the territorial development of the high-level radioactive wastes programs started within R&D programs although the program was officially presented as “placeless” (Murphy 2009). They also show that the siting processes have been designed very differently. In Canada, the siting process has been co-designed with publics while the French national Parliament has imposed a siting location for the industrial project. Third, through the (in)actions of such local committees considered as invited critics (Wynne 2007), new socio-technical adjustments has occurred in these programs. Even though, we stress that the dichotomy between expert-based and participatory is still pregnant (for different reasons) and reinforce the dichotomy between nature/experts/underground and society/publics/ground. [less ▲]

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See detailIntroduction
Mormont, Hugo ULiege

Conference (2016, December 09)

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See detailInvasive Alien Species in HeidelbergCement’s quarries in the European Union
Monty, Arnaud ULiege

Conference (2016, December 09)

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