References of "Scientific congresses and symposiums"
     in
Bookmark and Share    
Full Text
See detailImmunomodulatory effects of Rapamycin in xenogeneic GVHD
Ehx, Grégory ULg; HANNON, Muriel ULg; DUBOIS, Sophie ULg et al

Poster (2014, January 27)

Detailed reference viewed: 8 (3 ULg)
Full Text
See detailKisspeptin and neuronal nitric oxide signaling are important in female sexual behavior
Hellier, Vincent ULg; Bakker, Julie

Poster (2014, January 27)

Detailed reference viewed: 20 (1 ULg)
Full Text
See detailL'oxydation des poudres: un défi pour l'avenir
Blecker, Christophe ULg

Poster (2014, January 27)

Detailed reference viewed: 4 (0 ULg)
Full Text
See detailScikit-Learn: Machine Learning in the Python ecosystem
Joly, Arnaud ULg; Louppe, Gilles ULg

Poster (2014, January 27)

The scikit-learn project is an increasingly popular machine learning library written in Python. It is designed to be simple and efficient, useful to both experts and non-experts, and reusable in a variety ... [more ▼]

The scikit-learn project is an increasingly popular machine learning library written in Python. It is designed to be simple and efficient, useful to both experts and non-experts, and reusable in a variety of contexts. The primary aim of the project is to provide a compendium of efficient implementations of classic, well-established machine learning algorithms. Among other things, it includes classical supervised and unsupervised learning algorithms, tools for model evaluation and selection, as well as tools for data preprocessing and feature engineering. This presentation will illustrate the use of scikit-learn as a component of the larger scientific Python environment to solve complex data analysis tasks. Examples will include end-to-end workflows based on powerful and popular algorithms in the library. Among others, we will show how to use out-of-core learning with on-the-fly feature extraction to tackle very large natural language processing tasks, how to exploit an IPython cluster for distributed cross-validation, or how to build and use random forests to explore biological data. [less ▲]

Detailed reference viewed: 57 (11 ULg)
Full Text
See detailL’apport des cultes royaux hellénistiques au débat sur la polis religion dans le monde hellénistique
Caneva, Stefano ULg

Conference (2014, January 25)

La contribution suivante attire l’attention sur quelques enjeux du projet de recherche mené par l’Auteur, intitulé « Ritual Practicalities of Hellenistic Ruler Cults: A ‘Practice-Turn’ in the religious ... [more ▼]

La contribution suivante attire l’attention sur quelques enjeux du projet de recherche mené par l’Auteur, intitulé « Ritual Practicalities of Hellenistic Ruler Cults: A ‘Practice-Turn’ in the religious and social history of the Hellenistic period ». Le but de ce projet est de combler une lacune dans la recherche sur les cultes royaux hellénistiques en déplaçant l’attention de leurs justifications idéologiques, qui a occupé jusqu’ici une position prioritaire dans les études, à la pratique religieuse et à ses fondements sociaux. L’attention se concentrera donc sur les actes cultuels, en se posant la question de savoir comment, par qui et dans quels contextes les rituels pour les souverains furent intégrés dans la vie religieuse des communautés hellénistiques. Il s’agira de combiner l’histoire religieuse (usage, adaptation et innovation des traditions religieuses antérieures et d’éléments particuliers du culte en relation avec les cultes royaux) et l’histoire sociale et politique (les cultes royaux dans les dynamiques locales et globales ; développements diachroniques). L’aspect sur lequel se concentre la communication présente concerne la place méthodologique de l’étude des cultes royaux dans le débat sur la « polis religion » et l’ « individualisation du religieux » dans le monde gréco-romain. [less ▲]

Detailed reference viewed: 13 (1 ULg)
Peer Reviewed
See detailAspetti prosodici e testuali del raccontare: dalla letteratura orale al parlato dei media
Moreno, Paola ULg; Di Salvo, Margherita

Conference (2014, January 23)

Detailed reference viewed: 8 (0 ULg)
Full Text
See detailTailoring the Properties of Metallic Clusters by Ligand Coatings
Fresch, Barbara ULg

Conference (2014, January 23)

Tuning the properties of metallic clusters using different protecting ligand shells is an important step toward the application-orientated design of nanoparticles for nano-electronics and catalysis. An ... [more ▼]

Tuning the properties of metallic clusters using different protecting ligand shells is an important step toward the application-orientated design of nanoparticles for nano-electronics and catalysis. An attractive property of these materials is the ability to engineer ligand shells composed of different molecules that influence the electronic structure of the system due to their chemical interaction with the metal core. Sometimes properties are not simply additive, and cooperative effects emerge so that the presence of more than one ligand type in the ligand shell imparts novel properties to the nanoparticles. We theoretically investigate at the DFT level palladium and gold metal cores interacting with only-thiol, only-phosphine and mixed phosphine-thiol ligand shells. In this talk, we present some examples of how these capping systems affect structural, optical, magnetic and charging properties of metallic clusters. For Au11 and Au13, we show that ligation stabilizes structural isomers characterized by a flake geometry of the metal core, and they show different optical properties than isomers with a compact gold core. The magnetic ground state of small bare Pd13 clusters is a high spin state, nonet or septet depending on the structural isomer. We demonstrate that interaction with thiols and phosphines differently affect structure and magnetic ground state in these systems. The mixed ligand species Pd13(SCH3)6(PH3)6 shows multiple energetically accessible spin states and consequently an unusual thermal behaviour of the average magnetic moment. The charge transfer character of the metal-ligand interaction is studied in small Pd13 and truly nano-sized Pd55 ligand protected metal cores. We discuss cooperative effects in the ligand induced charge redistribution and demonstrate that the electron donor or acceptor character of the ligand molecules affects the energetics of charging processes [less ▲]

Detailed reference viewed: 19 (0 ULg)
Full Text
See detailLosses – Marks&Spencer
Richelle, Isabelle ULg

Conference (2014, January 23)

This conference will explore the history, impact, and potential for further development of the CJEU’s and the EFTA Court’s landmark decisions relating to direct taxation.

Detailed reference viewed: 7 (2 ULg)
Peer Reviewed
See detailArt et schizophrénie : étude comparative de biographies d’artistes d’art brut et de sujets schizophrènes peintres
Moffarts, Aloïse; Englebert, Jérôme ULg

Poster (2014, January 22)

La psychopathologie phénoménologique explique la schizophrénie en termes de perte de l'évidence naturelle (Blankenburg, 1991/1971) ou de psychopathologie du sens commun (Stanghellini, 2000, 2004, 2007 ... [more ▼]

La psychopathologie phénoménologique explique la schizophrénie en termes de perte de l'évidence naturelle (Blankenburg, 1991/1971) ou de psychopathologie du sens commun (Stanghellini, 2000, 2004, 2007). Concernant les théories consacrées à l'art et la psychopathologie, nous nous penchons sur la théorie de la Gestaltung de Prinzhorn (1984), sur l’hypothèse de l’« l'art révolutionnaire » de Sass (1992 ; Spaniol, 2001) et analysons la classification de Jádi (Hulak, 1990). Enfin, à partir de ces travaux, nous avons établi trois types d'art qui peuvent se retrouver chez des artistes malades mentaux : art brut, art naïf et art de recherche. Notre méthodologie consiste à analyser la biographie de deux artistes peintres de la famille de « l'art brut » (Aloïse Cobraz et Adolf Wölfli) en les comparant aux biographies et analyses de cas de deux patients schizophrènes se considérant comme artistes peintres. Nous avons élaboré un questionnaire semi-structuré pour questionner les artistes sur leur parcours artistique et leur rapport à l’art. Après nos analyses et le croisement avec les théories existantes, nous émettons comme hypothèse que les schizophrènes artistes se distinguent des autres types d’artistes (pathologiques ou non) dans leur rapport à la créativité. Ceci est congruent avec le concept d’« art révolutionnaire » de Sass (1992). La classification de Jádi nous permet de suggérer qu’il n’est pas cohérent de parler d’un art des malades mentaux et que le trouble psychiatrique ne peut donc pas être considéré comme l’essence de l'art brut. Enfin, nous pouvons émettre l’hypothèse que l'art semble conférer aux schizophrènes artistes une forme d'adaptation sociale eu égard au sens commun « perdu ». [less ▲]

Detailed reference viewed: 75 (6 ULg)
Peer Reviewed
See detailLe problème des protocoles longs au test de Rorschach
Dufour, Cristelle; Englebert, Jérôme ULg

Poster (2014, January 22)

Notre étude s’intéresse aux protocoles exceptionnellement longs (supérieurs à 50 réponses) fournis par cinq sujets au test du Rorschach administré et interprété selon la méthode du Système Intégré (Exner ... [more ▼]

Notre étude s’intéresse aux protocoles exceptionnellement longs (supérieurs à 50 réponses) fournis par cinq sujets au test du Rorschach administré et interprété selon la méthode du Système Intégré (Exner, 2003). Afin de mieux comprendre quelle attitude adopter face à ce type de protocole, nous avons effectué une réduction a posteriori du nombre de réponses en nous basant sur les recommandations d’Exner (1988, 1992, 2003). Nous avons ensuite réalisé une étude comparative entre l’interprétation clinique réalisée avec la totalité des réponses et avec seulement les cinq premières réponses par planche. Nous avons également reproduit cette méthodologie de réduction a posteriori du nombre de réponses avec quatre réponses par planche en nous inspirant des nouvelles recommandations du système R-PAS de Meyer et al. (2009). Selon ces propositions, un protocole de test de Rorschach serait valide lorsque le sujet fournit entre 20 et 40 réponses (entre 2 et 4 par planche). L’échantillon est composé de trois sujets tout-venant et deux sujets psychiatriques. Notre analyse a mis en évidence une stabilité de certaines variables (EB, Lambda, EA) mais d’importantes différences dans le profil psychologique des sujets après réduction. Nous avons observé une clarification des difficultés fondamentales chez les sujets psychiatriques et plutôt une neutralisation de ces difficultés pour les sujets tout-venant, avec notamment des stratégies défensives qui apparaissent plus adaptées. Selon les résultats obtenus à partir de notre échantillon, nous pouvons suggérer que la prise en compte de la totalité des réponses ou seulement du protocole partiel induit une différence dans l’interprétation clinique. En conséquence, toute réduction du nombre de réponses devrait se faire avec grande prudence. Notre étude permet de discuter des pratiques actuelles du test de Rorschach, en faisant dialoguer les contraintes inhérentes à la validité du test et les questions de la réduction de la complexité clinique propres à toute entreprise de standardisation. [less ▲]

Detailed reference viewed: 29 (2 ULg)
Peer Reviewed
See detailLe Rorschach selon le Système Intégré et le TCI-R : comparaison et intégration
Rentmeister, Daniel; Englebert, Jérôme ULg; Blavier, Adelaïde ULg

Poster (2014, January 22)

Pour cette étude, un double objectif est recherché. Premièrement, nous comparons statistiquement le test de Rorschach selon le Système Intégré de J.E.Exner et le Temperament and Character Inventory – ... [more ▼]

Pour cette étude, un double objectif est recherché. Premièrement, nous comparons statistiquement le test de Rorschach selon le Système Intégré de J.E.Exner et le Temperament and Character Inventory – Revised de R. Cloninger afin de mettre en évidence leurs divergences et convergences. Deuxièmement, à l’aide de cas cliniques, nous discutons de la pertinence de l’intégration des résultats obtenus par ces deux outils en vue d’établir le profil psychologique complet et cohérent d’un individu. Pour la comparaison statistique, notre échantillon de 27 sujets tout-venant (M = 24,37 ans ; SD = 2,75) a d’abord été soumis au test de Rorschach. Directement après, chaque sujet a complété le TCI-R. Une analyse de corrélation (Rho de Pearson) a été calculée entre les indices et un ajustement de Bonferroni a été effectué. Pour l’analyse de cas, 3 sujets cliniques ont été recrutés. Une anamnèse a été réalisée et le test de Rorschach et TCI-R administré. Nos premiers résultats, qui sont à prendre avec prudence au vu du faible nombre de sujet de l’échantillon, sont à nuancer et discuter. À partir de 2016 comparaisons statistiques, nous sélectionnons les résultats les plus pertinents et discutons des différentes corrélations observées. Les analyses de cas nous montrent une concordance au niveau des relations sociales et de l’impulsivité ; et nous montrent que les informations propres à chaque test permettent de compléter le profil du sujet. Enfin, c’est en abordant les deux épistémologies différentes sur lesquelles reposent ces deux tests que nous pouvons expliquer au mieux les différences psychologiques mises en évidence à propos des mêmes individus. Nous concluons en suggérant que cette différence de résultats doit certainement être comprise selon une logique intégrative et souligne la complémentarité existant entre ces deux épreuves. [less ▲]

Detailed reference viewed: 43 (5 ULg)
See detailEpigenetics and local adaptation
Hanikenne, Marc ULg

Conference (2014, January 22)

Detailed reference viewed: 12 (1 ULg)
Full Text
Peer Reviewed
See detailQuantitative approaches based on Surface-Enhanced Raman Scattering (SERS) and Surface-Enhanced Raman Chemical Imaging (SER-CI)
De Bleye, Charlotte ULg; Sacre, Pierre-Yves ULg; Dumont, Elodie ULg et al

Conference (2014, January 20)

Surface-enhanced Raman scattering (SERS), discovered in 1978, is a recent technique enabling to circumvent the main limitations of classical Raman spectroscopy by dramatically exalting the Raman ... [more ▼]

Surface-enhanced Raman scattering (SERS), discovered in 1978, is a recent technique enabling to circumvent the main limitations of classical Raman spectroscopy by dramatically exalting the Raman scattering of the target molecules which are adsorbed or very closed to metallic surfaces while reducing the fluorescence impact on spectra [1]. This technique combines the sensitivity of the fluorescence keeping the structural information of molecules obtained from the SERS spectrum [2]. This last point allows to implement multiplex analyses. Moreover, it is possible to perform Surface-enhanced Raman chemical imaging (SER-CI) analyses which enable to acquire a visual representation of samples combining spectral and spatial measurements. Therefore SERS could become an attractive technique in numerous fields such as pharmaceutical and biomedical research. In this context, the feasibility of developing quantitative approaches using SERS and SER-CI on a pharmaceutical model was studied. The aim was to develop methods allowing the quantification of 4-aminophenol (4-AP) in a pharmaceutical formulation based on paracetamol. 4-AP is the main impurity of paracetamol and is actively research because of its toxicity. This pharmaceutical model was first investigated using SERS and a quantitative method enabling to quantify 4-AP from 3 to15 µg/mL was developed and validated using the standard addition method as a calibration method [3]. From these results, the possibility of developing a quantitative approach using SER-CI was investigated. Tablets based on paracetamol comprising different concentrations of 4-AP were prepared. Different ways to cover the sample surface by the SERS substrate were tested and a homogeneity study was performed to improve the repeatability of SER-CI analyses. Different spectral intensity normalizations were also tested in order to optimize the SER-CI method. Finally, a quantitative approach using SER-CI was developed allowing the quantification of 4-AP from 0.025% to 0.2% (w/w) in paracetamol tablets [4]. This first quantitative approach could pave the way to quantitative analysis of small molecules using SER-CI in complex matrices. References [1] P.L. Stiles, J.A. Dieringer, N.C. Shah, R.P. Van Duyne, Annu. Rev. Anal. Chem. 1 (2008) 601-626. [2] R.F. Aroca, R.A. Alvarez-Puebla, N. Pieczonka, S. Sanchez-Cortez, J.V. Garcia-Ramos, Adv. Colloid Interface Sci. 116 (2005) 45-61. [3] C. De Bleye, E. Dumont, E. Rozet, P.-Y. Sacré, P.-F. Chavez, L. Netchacovitch, G. Piel, Ph. Hubert, E. Ziemons, Talanta 116 (2013) 899-905. [4] C. De Bleye, P.-Y. Sacré, E. Dumont, L. Netchacovitch, P.-F. Chavez, G. Piel, P. Lebrun, Ph. Hubert, E. Ziemons, J. Pharm. Biomed. Anal. (in Press) [less ▲]

Detailed reference viewed: 101 (3 ULg)
See detailAt which level of vitamin D should we aim?
CAVALIER, Etienne ULg

Conference (2014, January 18)

Detailed reference viewed: 15 (0 ULg)
See detailSharing the Civic Sacrifice: Between Honorific Portions and Equal Division
Carbon, Jan-Mathieu ULg; Paul, Stéphanie ULg

Conference (2014, January 18)

The granting of a sacrificial portion, much like dinner in the prytaneion (sitesis, deipnon), is one of the major benefits bestowed to recipients of Greek honorific and proxeny decrees, across all regions ... [more ▼]

The granting of a sacrificial portion, much like dinner in the prytaneion (sitesis, deipnon), is one of the major benefits bestowed to recipients of Greek honorific and proxeny decrees, across all regions and periods. Yet the highlighting of an individual over and above his peers runs to some extent counter to his inclusion into a citizenship or another form of civic parity. Various inscriptions attest to this sort of tension, which can in fact be viewed as representative of the dialectic between hierarchy and equality that is characteristic of Greek sacrifice: between gods and priests, for instance, or between priests and other worshippers. These relationships were articulated in all manner of sacrifices and civic feasts, from the offering of a divine portion on the altar or cult-table, to the attribution of priestly and honorific portions of meat which were anatomically related to this divine portion, and finally to the distribution of the remaining meat among the other participants (cp. Ekroth). Several important questions can be raised concerning honorific decrees and similar epigraphic materials: Why was a specific portion sometimes, albeit not usually, granted to honoured individuals in these texts? What did the difference between a generic portion or a priestly portion (a leg, an osphys, etc.) entail concerning the status of these honourees? Did it reflect only a local custom or rather a specific intention by the polis in recognising these individuals? And what were the practical and the conceptual differences between direct participation in a civic feast (such as a demothoinia, the civic banquet par excellence) and the sending (apostellein) of perquisites to honoured individuals absent from the feast? In the end, could a distribution of meat (dais, kreanomia) ever be truly "equal", regardless of what a polis might affirm to the contrary? This paper will explore these questions in a more systematic light than has been shed on them up to the present (Schmitt Pantel, Jacquemin). One of the implications will be a partial reconsideration of the prevalent notion of "equal" division (isomoiria) with regard to Greek sacrificial animals. Despite a rhetorical emphasis on commensality and equal sharing, some individuals in the polis were necessarily "more equal than others". In certain cases, the issue was simply the inclusion of a given honouree within the sacrificial community, while in others, the prerogatives at a feast were used to indicate a special status. From a realistic perspective, one can clearly see that the dialectical tension between sacrificial hierarchy and equality was a tool, which was expressed by the varying forms of commensality in civic feasts, and which could be moulded by the polis to suit its needs. [less ▲]

Detailed reference viewed: 19 (1 ULg)
Full Text
Peer Reviewed
See detailDendrochronological analysis of large tropical trees: a new approach combining photogrammetry, image processing and GIS tools
Latte, Nicolas ULg; Bauwens, Sébastien ULg; Bonnet, Stéphanie ULg et al

Conference (2014, January 17)

Tree-ring analysis of tropical trees is especially time-consuming for the largest trees. Because of large dimensions and irregular shapes, the tree-ring measurements are generally achieved (semi-)manually ... [more ▼]

Tree-ring analysis of tropical trees is especially time-consuming for the largest trees. Because of large dimensions and irregular shapes, the tree-ring measurements are generally achieved (semi-)manually directly from wood samples. The aim of this study is to present a new approach of tree-ring measurements combining photogrammetry, image processing and GIS tools that is appropriate for very large wood samples. Disks are sawed from felled trees above buttress. Small diameters holes are drilled to the disk surface to be later used as control points. Images are taken with an off-the-shelf camera and assembled with PhotoScan in order to produce an orthoimage of the green disk surface. After drying, disks are sanded (grain 80-400) and scanned with a flatbed scanner (A3 size) at high resolution (1200-2400 dpi). The scans are then mosaicked together with Autopano into one single image. Based on the control points of the green orthoimage, the ‘dry’ image is georeferenced and rectified. Using a GIS environment, tree-rings are delimited and ring widths and/or areas measured. Disks are entirely digitalized into high resolution images (0.02-0.04mm per pixel) offering a wide range of analysis possibilities. The image-based procedure reduces cost of disk handling and transportation, facilitates data processing and transfer and, is adaptable to any type of wood samples. [less ▲]

Detailed reference viewed: 110 (32 ULg)
Full Text
Peer Reviewed
See detailExamens Certificatifs Multimedia, Etude de cas et premier bilan dans le cadre d’un cours de travaux pratiques d’Anatomie
Defaweux, Valérie ULg; Bonnet, Pierre ULg; Schaffer, Patrick ULg et al

Conference (2014, January 17)

L’évaluation assistée par ordinateur se présente, sous ses multiples formes, comme un domaine important d’innovation technique et pédagogique (Winkley, 2010). Ses avantages par rapport aux méthodes ... [more ▼]

L’évaluation assistée par ordinateur se présente, sous ses multiples formes, comme un domaine important d’innovation technique et pédagogique (Winkley, 2010). Ses avantages par rapport aux méthodes traditionnelles ont été bien synthétisés (Boyle, & Hutchison, 2009) et les institutions d’enseignement supérieur s’interrogent sur les façons concrètes de matérialiser ceux-ci aux bénéfices de leurs enseignants et étudiants (JISC, 2007). A l’Université de Liège, les travaux pratiques d’Anatomie en Faculté de Médecine ont tout récemment donné lieu à une réflexion de ce type. Elle s’est soldée par la mise en place d’un nouveau dispositif d’examen. Cette innovation prend place dans le cadre d’un remaniement fondamental du cours, qui trouve son origine dans une augmentation significative du nombre d'étudiants et dans une volonté des enseignants de faire évoluer leurs méthodes pédagogiques. Un point majeur de la réforme a consisté à mettre à disposition des étudiants des ressources numériques inédites (images de scanners, de coupes, de bocaux digitalisés ou vidéos de dissection) et d’intégrer celles-ci à un parcours de formation revisité tant sur le plan des séances en présentiel que des possibilités de travail en autonomie. Ces changements ont entrainé la mise en oeuvre d’un dispositif d’examen sur écrans, conçu pour garantir la cohérence entre la manière d'évaluer, les méthodes d’apprentissage, les ressources manipulées et les objectifs revisités. La communication présentera les aspects techniques et pédagogiques de la nouvelle modalité d’examen, la situera dans le contexte général des travaux pratiques d’anatomie et suggèrera des pistes d’amélioration possibles, en s’appuyant notamment sur le feedback collecté, via un questionnaire, auprès des étudiants. [less ▲]

Detailed reference viewed: 33 (6 ULg)
See detailPsychogériatrie : à la croisée entre gériatrie et psychiatrie
Adam, Stéphane ULg; Schuerch, Mike ULg; PETERMANS, Jean ULg

Conference (2014, January 16)

Detailed reference viewed: 15 (1 ULg)
Full Text
See detailEvaluation of pitch accuracy: from occasional to operatic singers
Larrouy, Pauline ULg; Nowak, Marion; Roig-Sanchis, Virginie et al

Conference (2014, January 15)

Detailed reference viewed: 19 (3 ULg)
Full Text
See detailDendroecology and Dendroclimatology of a Tasmanian Bog Forest
Balanzategui, Daniel; Copenheaver, Carolyn; Frank, David et al

Poster (2014, January 14)

Detailed reference viewed: 18 (3 ULg)
Full Text
Peer Reviewed
See detailSelves Impairment in Bipolar Disorder through Self-Concept Clarity, Self-Defining Memories and Self-Esteem
Wagener, Aurélie ULg; Boulanger, Marie ULg; Van Limbergen, Coralie et al

Poster (2014, January 13)

Detailed reference viewed: 38 (1 ULg)
Full Text
Peer Reviewed
See detailDepression and autobiographical memory: which are the characteristics of depressed patients' self-defining memories?
Wagener, Aurélie ULg; Weigend, Alicia; Boulanger, Marie ULg et al

Poster (2014, January 13)

BACKGROUND. Depressed patients suffer from autobiographical memory deficits. Indeed, depressed patients present an overgeneralization and a mood congruence biases. Moreover, they seem to have difficulties ... [more ▼]

BACKGROUND. Depressed patients suffer from autobiographical memory deficits. Indeed, depressed patients present an overgeneralization and a mood congruence biases. Moreover, they seem to have difficulties to recall positive memories. Our aim is to focus on a specific kind of memories called “self-defining memories” (SDM) which are highly pertinent for self-building. Their characteristics (e.g. specificity, meaning making) were assessed and compared to those of healthy subjects. HYPOTHESES. Depressed patients relate less specific and meaning making events than control group. A mood congruence bias is observed. METHOD. 17 depressed patients and 18 healthy subjects fulfilled SDM exercises: subjects were asked to relate six important events that happened in their life. These SDM were assessed on several variables: specificity, impact, meaning making, contain. Moreover, subjects were assessed on depression severity and self-esteem (explicit and implicit). RESULTS. No difference between depressed patients and healthy subjects has been found for specificity. A marginal effect appeared for meaning making: control group seemed to relate more meaning making events than depressed patients. Depressed patients related more negative events than control group: this negative emotional valence was positively correlated with higher depression severity. Depressed subjects presented a lower explicit self-esteem than healthy subjects but no difference has been found for implicit self-esteem. Higher explicit self-esteem was positively correlated with positive emotional valence of SDM. DISCUSSION. Results partially support our hypotheses. Experimental and clinical implications of our results will be discussed. [less ▲]

Detailed reference viewed: 73 (4 ULg)
Peer Reviewed
See detailDes répertoires en dialogue. Gemmes et monnaies à types isiaques
Veymiers, Richard ULg

Conference (2014, January 10)

Detailed reference viewed: 10 (0 ULg)
See detailCritique et modernité
Filipucci, Alexis ULg; Pieron, Julien ULg

Conference (2014, January 09)

Detailed reference viewed: 13 (0 ULg)
Full Text
Peer Reviewed
See detailSpray retention assment combining high-speed shadow imagery and fluorescence techniques
Massinon, Mathieu ULg; Boukhalfa, Hassina dite Hafida ULg; Lebeau, Frédéric ULg

in International Advances in Pesticide Application: Aspects of Applied Biology 122, 2014 (2014, January 08)

Droplet behaviour during impact affects retention by leaves. The increase of droplet adhesion to plant leaves is the objective when applying crop protection products, while droplet bouncing and ... [more ▼]

Droplet behaviour during impact affects retention by leaves. The increase of droplet adhesion to plant leaves is the objective when applying crop protection products, while droplet bouncing and fragmentation are usually seen as detrimental to spray retention. However, observation of droplet impacts on barley using high speed imaging showed that fragmentation impact outcome can occur in two different wetting regimes: Cassie-Baxter or Wenzel’s regime. In the latter, a fraction of the droplet is anchored in the surface roughness, what contributes to retention. Three mixtures were sprayed on excised barley leaves with an 11003 flat-fan nozzle operating at 0.2 MPa. Simultaneous measurements were performed using high speed imaging for droplet impact characterisation. A fluorescent tracer was added to the spray mixture for retention assessment. Retention was related to impact type considering the fraction of the droplet remaining on the leaf surface after a droplet splashing occurring in Wenzel’s wetting regime. This fraction varied from 28‒46% depending on the spray mixture and was correlated to the Volume Median Diameter DV0.5 of the impacting droplets. [less ▲]

Detailed reference viewed: 42 (13 ULg)
See detailRain-operated Foliar Disease Transmission
Gilet, Tristan ULg

Conference (2014, January 07)

Plant diseases are a major cause of crop loss worldwide. They are known to be triggered by rainfalls. We here combine high-speed visualizations and physical modelling to elucidate the causal link between ... [more ▼]

Plant diseases are a major cause of crop loss worldwide. They are known to be triggered by rainfalls. We here combine high-speed visualizations and physical modelling to elucidate the causal link between rain impact on foliage and pathogen spreading. We identify two dominant scenarios by which the pathogens get ejected from leaves. The leaf compliance is shown to strongly affect these mechanisms. The laws of fluid dynamics set tight limits on this epidemiological problem. They suggest a revision of the current agricultural practices in order to contain the spread of foliar diseases. [less ▲]

Detailed reference viewed: 12 (2 ULg)
Peer Reviewed
See detailOn the Vedic Yajamâna-
Swennen, Philippe ULg

Conference (2014, January 07)

When he is consecrated, the Vedic Yajamâna symbolically becomes an embryo because he originally had the become a new Mârtânda in order to conquer the same divine status obtained by Vivasvant thanks to the ... [more ▼]

When he is consecrated, the Vedic Yajamâna symbolically becomes an embryo because he originally had the become a new Mârtânda in order to conquer the same divine status obtained by Vivasvant thanks to the realization of the first sacrifice. [less ▲]

Detailed reference viewed: 13 (1 ULg)
Full Text
Peer Reviewed
See detailNumerical Simulation of a Conical Shape Made By Single Point Incremental
Velosa De Sena, José ULg; Guzmán Inostroza, Carlos Felipe ULg; Duchene, Laurent ULg et al

in Incremental sheet forming (2014, January 06)

Detailed reference viewed: 21 (11 ULg)
See detailQuadratic reformulations of nonlinear binary optimization problems
Crama, Yves ULg

Conference (2014, January 06)

Detailed reference viewed: 14 (1 ULg)
See detailThe Delta Ori Very Large Project: X-ray Emission and Stellar Variability
Corcoran, Michael F.; Nichols, J. S.; Moffat, A. F. et al

in American Astronomical Society Meeting Abstracts (2014, January 01)

Delt Ori is the nearest massive, single-lined eclipsing binary (O9. II+OB, $P=5^{d}.7324$). High resolution X-ray spectrometry combined with high-precision photometry from space offers a unique ... [more ▼]

Delt Ori is the nearest massive, single-lined eclipsing binary (O9. II+OB, $P=5^{d}.7324$). High resolution X-ray spectrometry combined with high-precision photometry from space offers a unique opportunity to geometrically measure the dynamics of the shocked gas around the primary star. We summarize our recent campaign of phase-constrained high-resolution X-ray spectra obtained with the CHANDRA/HETGS plus high-precision optical photometry with MOST. These observations provide local measurement of the distribution of the embedded, X-ray emitting shocks in the wind of an O star via radial velocity variations and occultation effects, along with standard $f/i$ ratio diagnostics, and enable us to look for correlations with the broad-band photometric variability. We discuss how these observations can help determine the primary star's clumping-corrected mass loss rate, and resolve critical uncertainties in our understanding of the connection between stellar and mass loss parameters. [less ▲]

Detailed reference viewed: 5 (0 ULg)
Peer Reviewed
See detailGeophysical Monitoring of Artificial Landslide Dam of Kambarata Hydro Power Plant-2 (Kyrgyzstan)
Torgoev, Isakbek; Havenith, Hans-Balder ULg; Torgoev, Almaz

in Landslide Science for a Safer Geoenvironment (2014, January 01)

Detailed reference viewed: 12 (0 ULg)
Full Text
See detailThe VLTi/PIONIER survey of southern TTauri disks
Anthonioz, F.; Ménard, F.; Pinte, C. et al

in Booth, Mark; Matthews, Brenda; Graham, James (Eds.) Exploring the Formation and Evolution of Planetary Systems (2014, January 01)

Studying the inner regions of protoplanetary disks (1-10 AU) is of importance to understand the formation of planets and the accretion process feeding the forming central star. Herbig AeBe stars are ... [more ▼]

Studying the inner regions of protoplanetary disks (1-10 AU) is of importance to understand the formation of planets and the accretion process feeding the forming central star. Herbig AeBe stars are bright enough to be routinely observed by Near IR interferometers. The data for the fainter T Tauri stars is much more sparse. In this contribution we present the results of our ongoing survey at the VLTI. We used the PIONIER combiner that allows the simultaneous use of 4 telescopes, yielding 6 baselines and 3 independent closure phases at once. PIONIER's integrated optics technology makes it a sensitive instrument. We have observed 22 T Tauri stars so far, the largest survey for T Tauri stars to this date. Our results demonstrate the very significant contribution of an extended component to the interferometric signal. The extended component is different from source to source and the data, with several baselines, offer a way to improve our knowledge of the disk geometry and/or composition. These results validate an earlier study by Pinte et al. 2008 and show that the dust inner radii of T Tauri disks now appear to be in better agreement with the expected position of the dust sublimation radius, contrary to previous claims. [less ▲]

Detailed reference viewed: 7 (0 ULg)
See detailCompanion search around β Pictoris with the newly commissioned L'-band vector vortex coronagraph on VLT/NACO
Mawet, D.; Absil, Olivier ULg; Milli, J. et al

in Booth, Mark; Matthews, Brenda; Graham, James (Eds.) Exploring the Formation and Evolution of Planetary Systems (2014, January 01)

Here we present the installation and successful commissioning of an L'-band Annular Groove Phase Mask (AGPM) coronagraph on VLT/NACO. The AGPM is a vector vortex coronagraph made from diamond ... [more ▼]

Here we present the installation and successful commissioning of an L'-band Annular Groove Phase Mask (AGPM) coronagraph on VLT/NACO. The AGPM is a vector vortex coronagraph made from diamond subwavelength gratings tuned to the L' band. The vector vortex coronagraph enables high contrast imaging at very small inner working angle (here 0''.09, the diffraction limit of the VLT at L'), potentially being the key to a new parameter space. During technical and science verification runs, we discovered a late-type companion at two beamwidths from an F0V star (Mawet et al. 2013), and imaged the inner regions of β Pictoris down to the previously unexplored projected radius of 1.75 AU. The circumstellar disk was also resolved from ~= 1'' to 5'' (see J. Milli et al., these proceedings). These results showcase the potential of the NACO L-band AGPM over a wide range of spatial scales. [less ▲]

Detailed reference viewed: 14 (3 ULg)
Peer Reviewed
See detailHazard and risk related to earthquake-triggered landslide events
Havenith, Hans-Balder ULg

in Landslide Science for a Safer Geoenvironment (2014, January 01)

Detailed reference viewed: 13 (3 ULg)
See detailTime-Resolved X-ray Spectroscopy of the Massive Binary delta Ori
Nichols, Joy S.; Nazé, Yaël ULg; Corcoran, M. F. et al

in American Astronomical Society Meeting Abstracts (2014, January 01)

We have obtained 500 ks of Chandra HETG observations of the massive binary delta Ori (O9.5II+unseen companion), one of the fundamental calibrators of the mass-luminosity-radius relation in the upper HR ... [more ▼]

We have obtained 500 ks of Chandra HETG observations of the massive binary delta Ori (O9.5II+unseen companion), one of the fundamental calibrators of the mass-luminosity-radius relation in the upper HR diagram. The program is intended to map the emission line parameters as the secondary moves through the wind of the primary star. Custom extraction techniques have been developed to create 12 time-resolved 40 ks spectra from these observations, each of which is properly calibrated for time and temperature effects. Emission line fluxes for these time slice spectra are presented, as well as phase analysis of the variability of the fluxes. We discuss the interpretation of the resulting data, such as colliding winds and occultation of various temperature regimes of the primary wind by the secondary. [less ▲]

Detailed reference viewed: 6 (1 ULg)
Full Text
See detailUnraveling the Mystery of Exozodiacal Dust
Ertel, S.; Augereau, J.-C.; Thébault, P. et al

in Booth, Mark; Matthews, Brenda; Graham, James (Eds.) Exploring the Formation and Evolution of Planetary Systems (2014, January 01)

Exozodiacal dust clouds are thought to be the extrasolar analogs of the Solar System's zodiacal dust. Studying these systems provides insights in the architecture of the innermost regions of planetary ... [more ▼]

Exozodiacal dust clouds are thought to be the extrasolar analogs of the Solar System's zodiacal dust. Studying these systems provides insights in the architecture of the innermost regions of planetary systems, including the Habitable Zone. Furthermore, the mere presence of the dust may result in major obstacles for direct imaging of earth-like planets. Our EXOZODI project aims to detect and study exozodiacal dust and to explain its origin. We are carrying out the first large, near-infrared interferometric survey in the northern (CHARA/FLUOR) and southern (VLTI/PIONIER) hemispheres. Preliminary results suggest a detection rate of up to 30% around A to K type stars and interesting trends with spectral type and age. We focus here on presenting the observational work carried out by our team. [less ▲]

Detailed reference viewed: 10 (0 ULg)
Full Text
See detailFirst High-Angular Resolution L' Images of the β Pictoris Debris Disc with the VLT / NaCo
Milli, Julien; Mawet, Dimitri; Absil, Olivier ULg et al

in Booth, Mark; Matthews, Brenda; Graham, James (Eds.) Exploring the Formation and Evolution of Planetary Systems (2014, January 01)

Imaging debris discs in the L'-band (3.8 μm) is a difficult task. Quasi-static speckles from imperfect optics prevail below 1'' whereas background emission is the dominant noise source beyond that ... [more ▼]

Imaging debris discs in the L'-band (3.8 μm) is a difficult task. Quasi-static speckles from imperfect optics prevail below 1'' whereas background emission is the dominant noise source beyond that separation and is much larger than at shorter wavelengths. We demonstrate here the potential of the newly commissioned AGPM coronograph on VLT/NaCo combined with advanced star and sky subtraction technique based on Principal Component Analysis, and we analyze the morphology of the β Pictoris disc. [less ▲]

Detailed reference viewed: 10 (1 ULg)
Full Text
Peer Reviewed
See detailSperm Motility and Lactate production at different sperm concentrations
Ponthier, Jérôme ULg; De Tullio, Pascal ULg; Blommaert, Didier ULg et al

in Journal of Equine Veterinary Science (2014, January), 34(1), 75-76

Lactate production is associated with total spermatozoa concentration. It negatively affects preservation of total and progressive motility, showing an effect of by-products of anaerobic metabolism on ... [more ▼]

Lactate production is associated with total spermatozoa concentration. It negatively affects preservation of total and progressive motility, showing an effect of by-products of anaerobic metabolism on long-term storage. Moreover, our data show that non-progressive motile spermatozoa are highly associated to lactate concentration, and thus, anaerobic glycolysis. More studies are required to determine relative contributions of aerobiosis and anaerobiosis to spermatozoa motility under different storage conditions. [less ▲]

Detailed reference viewed: 44 (14 ULg)
Full Text
Peer Reviewed
See detailAnalysis of POPs in 20μL blood by MEPS-GC-MS/MS
L'Homme, Benjamin ULg; Focant, Jean-François ULg

in Hyphenated Techniques in Chromatography HTC-13 - Book of abstracts (2014, January)

Detailed reference viewed: 28 (1 ULg)
Full Text
Peer Reviewed
See detailUse of rotary atomiser to optimize retention on barley leaves while reducing driftable droplets
Ouled Taleb Salah, Sofiene ULg; Massinon, Mathieu ULg; Boukhalfa, Hassina dite Hafida ULg et al

in International Advances in Pesticide Application, Aspects of Applied Biology 122 (2014, January)

Controlled Droplet Application using rotary atomiser is based on an improved control of droplet size and trajectory comparatively to hydraulic nozzles. On the basis of literature, it was stated that the ... [more ▼]

Controlled Droplet Application using rotary atomiser is based on an improved control of droplet size and trajectory comparatively to hydraulic nozzles. On the basis of literature, it was stated that the use of 60° forward angled spray combined with the narrow drop size distribution of a rotary atomiser could lead to low drift and high retention on monocotyledonous and superhydrophobic weeds at early stage. A Micromax120 atomiser was tuned to emit 270 µm VMD, 60° angled forward, to increase interception by the canopy structure. A spray mixture containing a superspreader adjuvant was used to avoid drop bouncing. An increase of spray retention comparatively to a Teejet 11002 at 1.4 bars was observed, although not proved statistically significant by these preliminary trials. On the drift side, the tilted spinning disc seemed to be advantageous since droplet spectra contains a low percentage of droplets under 100 µm and presents an ejection velocity of 25 m.s-1 at 5000 RPM. The spray drift was reduced about 50%. However, these setting were not found as efficient as expected. Indeed, angled spray proved to be more sensitive to advection and turbulence, as the spray was more exposed to the airflow than for the vertical position. It appears that angling the spray and choosing a drop size spectrum with a Volume Median Diameter as big as 270 µm is not sufficient to reduce significantly this issue. Some alternatives as decreasing the emission height are possible with angled sprays but require height control that seems difficult to reach in practical situations. [less ▲]

Detailed reference viewed: 49 (12 ULg)
Full Text
Peer Reviewed
See detailGC×GC-TOFMS identification of new cadaveric VOCs
Pesesse, Romain ULg; Stefanuto, Pierre-Hugues ULg; Stadler, S et al

in Hyphenated Techniques in Chromatography HTC-13 - Book of abstracts (2014, January)

Detailed reference viewed: 30 (2 ULg)
Peer Reviewed
See detailEnhanced Multivariate Analysis of Mainstream Tobacco Smoke Particulate Phase by HS-SPME-GC×GC-TOFMS
Brokl, Michal ULg; Bishop, L; Wright, c et al

in Hyphenated Techniques in Chromatography HTC-13 - Book of abstracts (2014, January)

Detailed reference viewed: 22 (0 ULg)
Full Text
See detailAnalyse de stray-light d’un moyen d’essai de mesure de lumière parasite pour des instruments d’observation de la terre
Clermont, Lionel ULg

Conference (2014, January)

Description of the development of a facility for measuring stray light for earth observation instruments. Performance analysis by simulation (ASAP), and applications on instruments like ProbaV or Solar ... [more ▼]

Description of the development of a facility for measuring stray light for earth observation instruments. Performance analysis by simulation (ASAP), and applications on instruments like ProbaV or Solar Orbiter [less ▲]

Detailed reference viewed: 10 (1 ULg)
Full Text
Peer Reviewed
See detailUn approccio sociolinguistico allo studio dell’emigrazione campana in provincia di Liegi (Belgio)
Moreno, Paola ULg

in Di Salvo, Margherita; Moreno, Paola; Sornicola, Rosanna (Eds.) Multilinguismo in contesto migratorio. Metodologia e progetti di ricerca sulle dinamiche linguistiche degli italiani all'estero (2014, January)

Detailed reference viewed: 33 (5 ULg)
Full Text
Peer Reviewed
See detailMyocardial expression of cytokines influence postoperative outcome after cardiac surgery for congenital cardiac defects
Sprute, Johanna; Heying, Ruth; Buding, Brigitte et al

Conference (2014, January)

Detailed reference viewed: 7 (1 ULg)
See detailFast chromatographic method for explosive profiling
Stefanuto, Pierre-Hugues ULg; Peyrrault, Katelynn; Focant, Jean-François ULg et al

Conference (2014, January)

Detailed reference viewed: 15 (2 ULg)
Full Text
See detailMigrations congolaises (RDC) en Belgique et postcolonialismes
Demart, Sarah ULg

in La lutte contre les discriminations au regard de l’histoire et de la mémoire coloniales : état des lieux (2014, January)

Detailed reference viewed: 12 (0 ULg)
See detailFluxonics
Silhanek, Alejandro ULg

Conference (2014, January)

Detailed reference viewed: 17 (4 ULg)
See detailInnovative analytical strategies for small molecules analysis by ion-mobility mass spectrometry
Eppe, Gauthier ULg; Goscinny, Séverine; Far, Johann ULg et al

Conference (2014, January)

Detailed reference viewed: 33 (11 ULg)
Full Text
Peer Reviewed
See detailCardiac malformations in neonates born from mothers with gestational diabetes
Antole, Nathalie; Jacquemart, Caroline; GKIOUGKI, Evangelia ULg et al

Conference (2014, January)

Detailed reference viewed: 27 (4 ULg)
See detailReading the decomposition chemistry of human remains with a new pair of glasses
Stefanuto, Pierre-Hugues ULg; Stadler, Sonja; Perrault, Katelynn et al

Conference (2014, January)

Detailed reference viewed: 8 (0 ULg)
Full Text
See detailEdging towards better accounting
Schumesch, Patrice ULg

in Accounting and Business Magazine of the Association of Certified Chartered Accountants (2014, January)

The ACCA's International Public Sector Conference explored the direction of public sector reporting, and rebuilding public trust through improved financial reporting. Other speakers included Carla Moordy ... [more ▼]

The ACCA's International Public Sector Conference explored the direction of public sector reporting, and rebuilding public trust through improved financial reporting. Other speakers included Carla Moordy of Monitory UK, Zinga Venner of the World Bank, and Professor Michael Parker of Henley Business School. [less ▲]

Detailed reference viewed: 5 (0 ULg)
Full Text
Peer Reviewed
See detailUse of automatic stapling device during castration to prevent (re)occurrence of inguinal hernia in horses with large vaginal rings.
Salciccia, Alexandra ULg; de la Rebière de Pouyade, Geoffroy ULg; Ponthier, Jérôme ULg et al

in Journal of Equine Veterinary Science (2014, January), 34(1), 99-100

(Re)ocurrence of inguinal hernia in case of very large vaginal rings may simply be prevented by closure of the vaginal tunic by TA staples during castration by inguinal approach. This method provides a ... [more ▼]

(Re)ocurrence of inguinal hernia in case of very large vaginal rings may simply be prevented by closure of the vaginal tunic by TA staples during castration by inguinal approach. This method provides a good resistance to internal pressure, appears to be safe, fast and easy to perform and may therefore be an interesting alternative to laparoscopic techniques when castration is considered. [less ▲]

Detailed reference viewed: 21 (4 ULg)
Full Text
Peer Reviewed
See detailReading the decomposition chemistry of human remains with a new pair of glasses
Stefanuto, Pierre-Hugues ULg; Stadler, s; Perrault, K et al

in Hyphenated Techniques in Chromatography HTC-13 - Book of abstracts (2014, January)

Detailed reference viewed: 17 (2 ULg)
Full Text
Peer Reviewed
See detailFast chromatographic method for explosives profiling
Stefanuto, Pierre-Hugues ULg; Perrault, K; Perrault, K et al

in Hyphenated Techniques in Chromatography HTC-13 - Book of abstracts (2014, January)

Detailed reference viewed: 13 (1 ULg)
Full Text
Peer Reviewed
See detailL’associationnisme ethnique à l’épreuve du temps : étude de cas. Le Movimiento Asociativo de Emigrantes Españoles en Bélgica
Molina Marmol, Maïté ULg

in Actes des journée d’étude du 10 novembre 2011 « Immigration et troisième âge. Vieillir en migration, constats et solutions pour des populations silencieuses » (2014, January)

Detailed reference viewed: 13 (1 ULg)
Full Text
Peer Reviewed
See detailPerturbation methods for the determination of the statistical response of nonlinear Volterra systems
Denoël, Vincent ULg; Carassale, Luigi

in Proceedings of the Eurodyn 2014 Conference (2014)

The point-like quasi-steady aerodynamic loading in a turbulent flow is formally expressed as a function of the squared relative velocity between the fluid and the investigated structure. The three major ... [more ▼]

The point-like quasi-steady aerodynamic loading in a turbulent flow is formally expressed as a function of the squared relative velocity between the fluid and the investigated structure. The three major terms governing the low-order statistics of the response are known to be related to the average loading, the linear turbulent loading and the aerodynamic damping. The three other terms in the loading, namely the quadratic turbulence term, the parametric velocity feedback term and the squared velocity term, may significantly affect the higher order statistical cumulants of the response. These latter two sources of fluid-structure interaction are usually disregarded, by lack of efficient simulation tools, except a Monte Carlo simulation of the nonlinear equation. In this paper, we provide a formal analysis of the complete nonlinear model, including thus all six terms, but mainly focusing on the importance of the two nonlinear coupling terms of the loading. Closed form solutions of the response are derived for a second-order Volterra model of this problem, under the assumption of different timescales in the loading and in the structural behavior. Two major outcomes of the analysis are, on the one hand, that the squared structural velocity term has no influence on the cumulants of the response up to order 4 and, on the other hand, that the parametric velocity feedback acts as a reduction of the non Gaussianity of the response. [less ▲]

Detailed reference viewed: 15 (0 ULg)
Full Text
Peer Reviewed
See detailClimatological influences on inland waterway transport capacity
Cools, Mario ULg; Limbourg, Sabine ULg

Conference (2014)

Climate change may affect inland waterway transport through disturbances in waterway hydrology: longer periods with strong water swells and drops. To allow fully loaded barges, the water level must be ... [more ▼]

Climate change may affect inland waterway transport through disturbances in waterway hydrology: longer periods with strong water swells and drops. To allow fully loaded barges, the water level must be neither too high (limited air draught) nor too low (limited draught). Therefore, the water level impacts the load factor of barges and thus the transportation costs. Moreover, in winter, ice jams can paralyze inland waterway traffic on the river. In this paper, the effect of various climatological changes on the capacity of inland waterway in terms of barge transport is examined. The paper focusses on the development of a methodology for assessing the sensitivity of inland waterway systems to climatological changes and takes into account an experts' opinion survey that provides insight into the perceived likelihood of the different scenarios that are investigated. The analysis focusses on the inland waterway systems in Belgium, which has the second highest density of European inland waterways. It enables the integration of inland waterway transport in the intermodal supply chain. The results are related to investment planning and management in inland waterways transport. They are intended to be interesting to researchers and to inland waterways actors developing intermodal transport as well. [less ▲]

Detailed reference viewed: 36 (0 ULg)
Full Text
See detailImpact de la musculation sur la performance en natation
Jidovtseff, Boris ULg

Conference (2014)

Detailed reference viewed: 15 (0 ULg)
Full Text
Peer Reviewed
See detailClimate-proofing of large reservoirs in Belgium by the development of enhanced operation rules
Bruwier, Martin ULg; Dewals, Benjamin ULg; Erpicum, Sébastien ULg et al

in 3rd IAHR Europe Congress (2014)

Available climate change scenarios project drier summers and more humid winters for Belgium. This study addresses the impacts of those changes on the management of two multi-purpose reservoirs located in ... [more ▼]

Available climate change scenarios project drier summers and more humid winters for Belgium. This study addresses the impacts of those changes on the management of two multi-purpose reservoirs located in the Vesdre basin, and the search of enhanced operation rules to mitigate those changes. For this purpose, an integrated model is used, including a hydrological model of the Vesdre watershed, a hydraulic model of this river, a model of the dam complex operation rules and a flood risk model. Performance indicators of the dams are defined, representing drinking water production, damages due to floods, hydropower production and low-flow enrichment. First, a sensitivity analysis of the main parameters of the dam operation rules on the performance indicators is achieved. Afterwards, for two extreme climate scenarios at the time horizons 2021-2050 and 2071-2100, impacts of climate change on the reservoir performances are determined. Then, the results of the sensitivity analysis are used to indicate if climate change impacts may be mitigated by means of enhanced operation rules. [less ▲]

Detailed reference viewed: 45 (28 ULg)
See detailEvaluating functional data for the European Middle Palaeolithic
Rots, Veerle ULg

Conference (2014)

Detailed reference viewed: 13 (0 ULg)
Full Text
Peer Reviewed
See detailAssessing the Probability of Training Image-Based Geological Scenarios Using Geophysical Data
Hermans, Thomas ULg; Caers, Jef; Nguyen, Frédéric ULg

in Pardo-Iguzquiza, Eulogio; Guardiola-Albert, Carolina; Heredia, Javier (Eds.) et al Mathematics of Planet Earth - Proceedings of the 15th Annual Conference of the International Association for Mathematical Geosciences (2014)

In multiple-point statistics (MPS), the construction of training im-ages (TIs) is one of the most critical steps. Reliable geological studies may not always be available to depict with certainty what ... [more ▼]

In multiple-point statistics (MPS), the construction of training im-ages (TIs) is one of the most critical steps. Reliable geological studies may not always be available to depict with certainty what geological patterns or heterogeneity are present. In this context, geophysical techniques may provide additional information to reduce the possible large uncertainty in the understanding of prior geological scenarios. To overcome this problem, we developed a methodology to verify the consistency of geophysical data with independently-built TIs representing different plausible geological scenarios. If a TI is deemed consistent with the field geophysical survey, then in a sec-ond step we calculate a likelihood probability for each consistent TI. Our methodology starts by creating subsurface models with each TI. From these models we create synthetic geophysical data and from this synthetic data, synthetic inverted models. These models are now compared with a single inverted model obtained from the field sur-vey, allowing for our definition of what is “consistent”. To that ex-tent, we calculate the Euclidean distance between any two inverted models as well as field data and visualize the results in a 2D or 3D space using multidimensional scaling (MDS). With this technique, it is possible to verify if field cases fall in the distribution represented by synthetic cases, and thus are consistent with them. In a second step, we present a cluster analysis on the MDS-map to highlight which parameters are the most sensitive for the construction of TI. Based on this analysis, a probability of each geological scenario is computed through kernel smoothing of the densities in reduced pro-jected metric space. This approach was tested using electrical resistivity tomography as geophysical data to analyze TI scenarios for the Meuse alluvial aqui-fer (Belgium), where the lack of reliable sedimentological data lead to the definition of a multitude of geological scenarios, hence TIs. [less ▲]

Detailed reference viewed: 38 (15 ULg)
Full Text
Peer Reviewed
See detailMeandering jets in shallow rectangular reservoir
Peltier, Yann ULg; Erpicum, Sébastien ULg; Archambeau, Pierre ULg et al

in 7th International Conference in River Hydraulics, River Flow 2014 (2014)

In this article, meandering flows in a shallow rectangular reservoir are experimentally and numerically investigated. Two experiments were performed in a smooth shallow horizontal flume and the surface ... [more ▼]

In this article, meandering flows in a shallow rectangular reservoir are experimentally and numerically investigated. Two experiments were performed in a smooth shallow horizontal flume and the surface velocity fields were measured by Large-Scale PIV (LSPIV). The flow conditions were chosen in such a way that the friction regime of both flows was different. These flows were then modelled using the academic code WOLF2D, which solves the 2D shallow water equations and uses a depth-averaged k- model for modelling turbulence. The main characteristics of the measured and simulated flows were finally extracted from a Proper Orthogonal Decomposition (POD) of the surface velocity fields and depth-averaged velocity fields respectively and were compared. When the mean fluctuating kinetic energy of the considered POD mode is greater than 1×10-5 m²/s², the numerical modelling and the experiments are in good agreement whatever the friction regime of the flow. [less ▲]

Detailed reference viewed: 16 (7 ULg)
Full Text
Peer Reviewed
See detailImpact of components of the metabolic syndrome on progression of knee osteoarthritis in the SEKOIA study
Edwards, MH; Parsons, C; Eymard, F et al

in Rheumatology (2014), 53(1), 31

Detailed reference viewed: 8 (2 ULg)
Full Text
Peer Reviewed
See detailToward redesigning the relationship between farming systems and biodiversity conservation
Brédart, David ULg; Denayer, Dorothée ULg; Mormont, Marc ULg

in Proceedings of the 11th European IFSA Symposium. Farming systems facing global challenges: capacities and strategies. (2014)

Detailed reference viewed: 21 (6 ULg)
Full Text
Peer Reviewed
See detailLes pseudo-déonomastiques arabes en français : Étude de cas et tentative de typologie
Baiwir, Esther ULg; Steffens, Marie ULg

in Dworkin, Steven; García arias, Xosé Lluis; Kramer, Johannes (Eds.) Actes du XXVIIe Congrès international de linguistique et de philologie romanes (Nancy, 15-20 juillet 2013). Section 6 : Étymologie (2014)

Detailed reference viewed: 26 (3 ULg)
Full Text
Peer Reviewed
See detailEnseignant de langues : de l’homme-orchestre au chef d’orchestre. Etat des lieux d’une discipline et d’une profession en questionnement
Defays, Jean-Marc ULg

in Maurer, Marie-Thérèse (Ed.) « L’enseignant au sein du dispositif d’enseignement/ apprentissage de la langue étrangère », Actes du Ve de l’Association des Directeurs de Centres Universitaires d’Etudes Françaises pour Etrangers (ADCUEFE), Université de Bourgogne, Dijon, 27-28 mai 2011 (2014)

Detailed reference viewed: 52 (7 ULg)
Full Text
Peer Reviewed
See detailMiddle Miocene climate and vegetation model reconstructions and their validation with the NECLIME database
François, Louis ULg; Henrot, Alexandra-Jane ULg; Utescher, Torsten et al

in Geophys. Res. Abstracts (2014), 16

The NECLIME database gathers data of the fossil flora recorded at many localities around the world at different times of the Miocene. François et al. (Palaeogeography, Palaeoclimatology, Palaeoecology ... [more ▼]

The NECLIME database gathers data of the fossil flora recorded at many localities around the world at different times of the Miocene. François et al. (Palaeogeography, Palaeoclimatology, Palaeoecology, 304, 359–378, 2011) have presented a new method for evaluating palaeoclimate model simulations from such fossil floras. In this method, palaeovegetation is simulated from climate model outputs, using a dynamic vegetation model. Model vegetation reconstruction is then compared to the vegetation cover indicated by the fossil flora record at the various localities, using a common classification of plant functional types (PFTs) in the data and the model. Here, we apply this method to test several published Middle Miocene climate simulations conducted with General Circulation Models of different complexity: (a) Planet Simulator, (b) FOAM-LMDZ4, (c) MPI-ESM, (d) CCSM3.0 and (4) CESM1.0. Corresponding palaeovegetation distributions are simulated with the CARAIB dynamic vegetation model, in which an upgraded vegetation classification involving 26 PFTs has been imple- mented. The NECLIME palaeoflora data from 154 localities distributed worldwide have been translated in terms of the presence/absence of these PFTs. A comparison of models and data is then undertaken globally and in selected regions of the world, using all available localities. The level of agreement varies among models, among PFTs and among regions. For instance, some models are able to produce tropical and subtropical PFTs in Europe consistently with the data, but the agreement for these PFTs may be much poorer in other parts of the world, such as in northeastern Eurasia. [less ▲]

Detailed reference viewed: 9 (1 ULg)
See detailLa contribution des lobes frontaux au fonctionnement exécutif
Collette, Fabienne ULg

Conference (2014)

Detailed reference viewed: 15 (1 ULg)
Full Text
Peer Reviewed
See detailRisk factors for falls among elderly nursing home residents: a 2-year prospective study
Buckinx, Fanny ULg; Beaudart, Charlotte ULg; Slomian, Justine ULg et al

in Osteoporosis International (2014), 25(2), 36-37

Detailed reference viewed: 20 (2 ULg)
Full Text
See detailMode Identification in Subdwarf B Stars from Multi-Wavelength Observations
Randall, Suzanna K; Fontaine, Gilles; Brassard, Pierre et al

in Astronomical Society of the Pacific Conference Series (2014), 481

We present several examples of partial mode identification for rapidly pulsating subdwarf B stars on the basis of multi-colour observations. Three targets (V391 Per, Balloon 090100001, and EC 11583−2708 ... [more ▼]

We present several examples of partial mode identification for rapidly pulsating subdwarf B stars on the basis of multi-colour observations. Three targets (V391 Per, Balloon 090100001, and EC 11583−2708) were analysed from multi-colour photometry, while studies were conducted from time-series spectrophotometry for two further stars (EC 20338−1925 and EC 01541−1409). In all cases, periodicities strongly dominating the frequency spectrum are associated with radial modes, indicating a clear hierarchy according to visibility when integrating over the visible disk of the star. [less ▲]

Detailed reference viewed: 13 (0 ULg)
Full Text
Peer Reviewed
See detailSaharan dust: An under-studied but significant source of air pollution in West Africa
Ozer, Pierre ULg; De Longueville, Florence ULg

in Belviso, Claudia; Fiore, Saverio; Giannossi, Maria Luigia (Eds.) DUST2014 - International Conference on Atmospheric Dust _ Book of Abstracts (2014)

Recently, the World Health Organization’s International Association for Research on Cancer (IARC) classified outdoor air pollution as carcinogenic to humans and now puts air pollution in the same category ... [more ▼]

Recently, the World Health Organization’s International Association for Research on Cancer (IARC) classified outdoor air pollution as carcinogenic to humans and now puts air pollution in the same category as tobacco smoke, UV radiation and plutonium. Exposure to ambient fine particles was recently estimated to have contributed 3.2 million premature deaths worldwide in 2010. The ambient air across the globe is polluted by emissions from motor vehicles, industrial processes, power generation, household combustion of solid fuel, and other sources. Dust storms lead to particulate levels that exceed internationally recommended levels especially in West Africa but this source of air pollution is under-studied, particularly in the literature devoted to human health impacts. [less ▲]

Detailed reference viewed: 24 (1 ULg)
Peer Reviewed
See detailLe Théâtre Flamand. Le progrès en scène.
Prina, Daniela ULg

Conference (2014)

Detailed reference viewed: 16 (5 ULg)
Full Text
Peer Reviewed
See detailVitamine D et sujet âgé
Bruyère, Olivier ULg; Reginster, Jean-Yves ULg

in Gériatrie et Psychologie Neuropsychiatrie du Vieillissement (2014), 12(1), 5-6

Detailed reference viewed: 9 (3 ULg)
Peer Reviewed
See detailRamesside Registers of Égyptien de Tradition: the Medinet Habu Inscriptions
Gillen, Todd Jonathan ULg

in Grossman, Eitan; Polis, Stéphane (Eds.) New Directions in Egyptian Syntax (2014)

Detailed reference viewed: 34 (0 ULg)
See detailLignin as a raw material for industrial materials applications
Richel, Aurore ULg; Vanderghem, Caroline ULg; Jacquet, Nicolas ULg et al

Poster (2014)

Native lignin is an abundant biopolymer on earth and represents 15-30% by weight of the lignocellulosic biomass. Lignin is a heterogeneous cross-linked polymer composed of phenylpropane units (guaiacyl ... [more ▼]

Native lignin is an abundant biopolymer on earth and represents 15-30% by weight of the lignocellulosic biomass. Lignin is a heterogeneous cross-linked polymer composed of phenylpropane units (guaiacyl, syringyl or p-hydroxyphenyl) linked together by a panel of specific ether or carbon-carbon bonds.[1] Nowadays, large amounts of lignins and lignin-based wastes are available and originate either from the pulp and paper manufacturing or from the production of bioethanol from lignocellulose. [2] Typically, these lignins are dedicated to energetic purposes by combustion. In recent years however, novel axes for high added value applications have emerged and concern, notably, the use of lignin as performance products (e.g. polymer additives, binders) or specialty chemicals (e.g. surface-active agents) for materials applications.[3] Herein, several applications of lignin in materials sciences with industrial issues are presented. A correlation is established between the extraction processes from lignocellulosic materials and the chemical structure and physico-chemical properties of lignins.[4] Our research group has also developed new methodologies for the extraction of highly pure lignins from several starting materials, including food wastes, herbaceous raw materials and wood biomass. These methodologies include microwave-assisted extraction and two-step conventional pretreatment involving steam explosion. These methodologies are described in this presentation. [less ▲]

Detailed reference viewed: 34 (14 ULg)
Full Text
Peer Reviewed
See detailLa Brigade d'intervention de la MONUSCO et le peacebuilding
Baenda Fimbo, Zacharie ULg

Conference (2014)

Detailed reference viewed: 10 (1 ULg)
Full Text
Peer Reviewed
See detailImplicit implementation of the Prevost model
Cerfontaine, Benjamin ULg; Charlier, Robert ULg

in Hicks, Michael A.; Brinkgreve, Ronald, R.J; Rohe, Alexander (Eds.) Numerical Methods in Geotechnical Engineering (2014)

The Prevost model for cohesionless soils (Prevost 1985) is currently used for the modelling of their cyclic behaviour, especially in earthquake engineering (Zerfa and Loret 2003) and (Yang and Elgamal ... [more ▼]

The Prevost model for cohesionless soils (Prevost 1985) is currently used for the modelling of their cyclic behaviour, especially in earthquake engineering (Zerfa and Loret 2003) and (Yang and Elgamal 2008). It’s made of conical yield surfaces that allow for plastic deformations in both loading and unloading. Its non-associated volumetric flow rule can roughly take into account pore pressure build-up and cyclic mobility. The method of implementation of a constitutive law is a crucial issue (Montáns and Caminero 2007) and (Mira et al. 2009). On one hand the accuracy of the solution must be ensured, especially when a large number of cycles are considered. But on the other hand, the cost of the computation must be minimized which implies step size as large as possible. In this paper, an implicit implementation of the Prevost model is proposed. The plastic flow rule is computed through a trapezoidal rule, at the time step n + 1/2, in order to increase the accuracy.An iterative process has to be solved, due to the implicit formulation.The Jacobian matrix of the internal Newton-Raphson process is computed analytically to enhance efficiency. The algorithm is implemented in the finite element code LAGAMINE that carries out fully-coupled analysis. Simulations of triaxial tests are compared with “exact” solution. [less ▲]

Detailed reference viewed: 11 (3 ULg)