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See detaildilemmas in cluster analysis
Sauvageot, Nicolas ULg

Conference (2013, November 27)

Cluster analysis is a set of multivariate procedures to detect natural groupings in data. The objective of those methods is to group a set of objects in such a way that objects in the same group (called ... [more ▼]

Cluster analysis is a set of multivariate procedures to detect natural groupings in data. The objective of those methods is to group a set of objects in such a way that objects in the same group (called cluster) are more similar to each other than to those in other groups. Organizing data into sensible groupings arises naturally in many scientific fields as psychology, biology, statistics, bioinformatics, marketing, and so on. However, the obtained solution is not unique and it strongly depends upon the analyst’s choices. Representation and normalization scheme, selection of distance measures and a clustering algorithm, choice of the number of clusters and their interpretations are all subjective choices which change the final output. Those decisions are mainly guided by the purpose of grouping, domain knowledge and the individual data set. Therefore, cluster validity assessment should be performed to evaluate the validity of the obtained clusters and to find the partitioning that best fits the underlying data. I provide a brief overview of clustering, summarize well known algorithms, and discuss the major challenges and key issues in performing clustering analysis. [less ▲]

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See detailElasto-inertial turbulence in polymeric flows
Terrapon, Vincent ULg; Dubief, Yves; Soria, Julio

Conference (2013, November 26)

The dynamics of elasto-inertial turbulence (EIT) is investigated numerically from the perspective of the coupling between polymer dynamics and flow structures. In particular, direct numerical simulations ... [more ▼]

The dynamics of elasto-inertial turbulence (EIT) is investigated numerically from the perspective of the coupling between polymer dynamics and flow structures. In particular, direct numerical simulations of channel flow with Reynolds numbers ranging from 1000 to 6000 are used to study the formation and dynamics of elastic instabilities and their effects on the flow. Based on the splitting of the pressure into inertial and polymeric contributions, it is shown that the trains of cylindrical structures around thin sheets of high polymer extension that are characteristics to elasto-inertial turbulence are mostly driven by polymeric contributions. [less ▲]

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See detailLa psychologie du travail au service de l'approche qualité
Nyssen, Anne-Sophie ULg

Conference (2013, November 26)

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See detailDensification et qualité de vie : objectifs de la conférence et cadrage des travaux
Godart, Marie-Françoise; Halleux, Jean-Marie ULg; Hanin, Yves

Conference (2013, November 26)

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See detailProduction de l’habitat et enjeux territoriaux : comment soutenir la transition vers un nouveau système de production pour l’habitat wallon ?
Halleux, Jean-Marie ULg

Conference (2013, November 26)

En Wallonie, la maison isolée demeure le type de logement le plus fréquemment construit. La construction résidentielle continue donc à se caractériser par un usage peu parcimonieux du sol. Pour autant ... [more ▼]

En Wallonie, la maison isolée demeure le type de logement le plus fréquemment construit. La construction résidentielle continue donc à se caractériser par un usage peu parcimonieux du sol. Pour autant, des signaux annonciateurs de la mise en place d’un système de production plus vertueux semblent se manifester, en lien avec la représentation croissante des logements collectifs et des logements mitoyens dans la production immobilière. Les traitements opérés afin de rendre compte de ces évolutions mettent en avant le rôle central de la disponibilité en zones d’habitat. En effet, ces tendances caractérisent surtout des régions où l’offre foncière constructible est en pénurie. La première partie de notre intervention sera focalisée sur ce sujet des relations entre la disponibilité en terrains et les modes de production du logement. En deuxième partie, nous présenterons les résultats d’une enquête menée auprès de ménages ayant choisi d’habiter un logement neuf. Les résultats de cette enquête témoignent du fait que la rareté foncière renforce l’acceptation des ménages pour les produits immobiliers de la maison jointive et de l’appartement. Par ailleurs, ils attestent de l’opportunité de développer une politique foncière active visant, d’une part, à renforcer la production de maisons mitoyennes à proximité des centres urbains et, d’autre part, à contrôler les développements de type Bimby. [less ▲]

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See detailTraitement médical des tendinopathies du genou
Kaux, Jean-François ULg

Conference (2013, November 23)

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See detailQuand les traducteurs parlent de traduction. Ou le genre de la préface détourné
Letawe, Céline ULg

Conference (2013, November 23)

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See detailRéintroduction d'Aedes albopictus, une menace pour la Belgique? (Diptera: Culicidae)
Boukraa, Slimane ULg; Raharimalala, Fara Nantenaina ULg; Zimmer, Jean-Yves ULg et al

Conference (2013, November 23)

Actuellement, l’espèce Aedes albopictus Skuse est considérée comme le moustique le plus invasif dans le monde entier et l’un des plus importants vecteurs d’arbovirus (notamment chikungunya et dengue). En ... [more ▼]

Actuellement, l’espèce Aedes albopictus Skuse est considérée comme le moustique le plus invasif dans le monde entier et l’un des plus importants vecteurs d’arbovirus (notamment chikungunya et dengue). En Belgique, Ae. albopictus a été introduit pour la première fois en 2000 à Vrasene (Province de Flandre-Orientale), dans une entreprise de recyclage des pneus usagés en provenance des États-Unis et du Japon. Plusieurs autres inspections ont été effectuées (2001-2012) après ce premier rapport, mais aucun autre spécimen n’a été trouvé. L’espèce était considérée comme éliminée naturellement et aucune nouvelle introduction n’avait été signalée. Dans le cadre d'une étude de surveillance de moustiques réalisée dans plusieurs endroits à travers la Belgique en 2013, un adulte mâle d’Ae. albopictus a été capturé à l'aide d’un piège à CO2 à Vrasene dans la même entreprise de recyclage de pneus (51 ° 12'49 "N, 4 ° 11'37" E; juillet 2013). L’espèce a été confirmée par identification morphologique et moléculaire. Cette redécouverte d’Ae. albopictus ainsi que son absence durant les treize dernières années, démontrent sa réintroduction en Belgique via le commerce de pneus usagés. Une étude sur la survie et la dispersion de ce moustique en Belgique, ainsi que de son écologie dans les pays voisins pourrait fournir des indications importantes pour élucider davantage son caractère invasif et identifier les zones à haut risque. [less ▲]

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See detailEFFECTS OF CHONDROITIN SULFATE ON THE GENE EXPRESSION PROFILE IN THE INFLAMED SYNOVIAL MEMBRANE
Lambert, Cécile ULg; Dubuc, Jean-Emile; Montell, E et al

Conference (2013, November 23)

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See detailEFFECTS OF CHONDROITIN SULFATE ON THE GENE EXPRESSION PROFILE IN INTERLEUKIN-1Β STIMULATED SYNOVIAL FIBROBLAST CELLS CULTURES
Lambert, Cécile ULg; Dubuc, Jean-Emile; Montell, E et al

Conference (2013, November 23)

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See detailOleuropein or rutin consumption decreases the spontaneous development of OA in Hartley guinea pig
Sanchez, Christelle ULg; Horcajada, Marie-Noëlle; Membrez, Fanny et al

Conference (2013, November 23)

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See detailProtective effect of a new CHITOSAN BIOMATERIAL against the development of experimental osteoarthritis lesions in rabbit
Oprenyeszk, Frédéric ULg; Chausson, M; Maquet, V et al

Conference (2013, November 23)

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See detailLe développement langagier des enfants dysphasiques
Maillart, Christelle ULg

Conference (2013, November 22)

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See detailComparaison de la qualité vocale chez des patients souffrant d’un cancer des cordes vocales classé T1a ayant suivi une résection endoscopique au laser ou une radiothérapie externe
Poncelet, Mélanie ULg; DEMEZ, Pierre ULg; PIRET, Yves et al

Conference (2013, November 22)

Thème général : le choix du traitement concernant les cancers glottiques à un stade précoce reste controversé. Les deux principaux traitements sont la chirurgie endoscopique au laser et la radiothérapie ... [more ▼]

Thème général : le choix du traitement concernant les cancers glottiques à un stade précoce reste controversé. Les deux principaux traitements sont la chirurgie endoscopique au laser et la radiothérapie. Nous nous sommes intéressée aux conséquences des traitements sur une fonction importante, à savoir la phonation. Hypothèse de recherche : la qualité vocale des patients ayant souffert d’une tumeur T1a du plan glottique varie en fonction du traitement reçu, à savoir une résection endoscopique au laser CO2 ou une radiothérapie. Matériel et méthodes : nous avons recruté 18 patients traités par cordectomie, 7 traités par radiothérapie et 31 sujets contrôles. Un bilan vocal recommandé par l’European Voice Society a été réalisé chez tous les participants. Ce bilan comprenait des mesures acoustiques, aérodynamiques et des mesures perceptives (évaluation par le sujet lui-même ainsi que par un jury naïf composé de 38 juges). Résultats : les sujets traités par cordectomie obtiennent un score au jitter plus élevé et une étendue fréquentielle réduite par rapport aux sujets contrôles. Leur temps maximum phonatoire est plus faible alors que leur Mean flow rate est plus élevé par rapport aux sujets contrôles. Leurs scores au VHI total ainsi qu’à l’échelle physique sont plus élevés. Au niveau des mesures acoustiques, aérodynamiques et perceptives nous n’obtenons pas de différence significative entre les patients traités par cordectomie et ceux traités par radiothérapie. On constate néanmoins que les voix des sujets traités par cordectomie ont tendance à être jugées par le jury comme moins altérées. Conclusion : notre étude ne permet pas d’affirmer la supériorité d’un des traitements en ce qui concerne la qualité vocale post-traitement. L’analyse perceptive réalisée par un jury naïf permet d’observer que les voix des sujets traités pas radiothérapie ont tendance à être jugées comme étant légèrement plus altérées que celles des sujets traités pas cordectomie. Bien que certains prolongements soient possibles, notre étude apporte néanmoins une évaluation multiparamétrique de la qualité vocale après un cancer des cordes vocales classé T1a et traité soit par cordectomie endoscopique au laser CO2 soit par radiothérapie externe. Elle est la première à utiliser un jury naïf dans l’évaluation perceptive de la qualité vocale. [less ▲]

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See detailAccompagner les etudiants infirmiers en stage: enjeux et defis
Dury, Cécile ULg

Conference (2013, November 21)

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See detailClostridium difficile: an emerging zoonotic pathogen ?
Rodriguez Diaz, Cristina ULg; Taminiau, Bernard ULg; Avesani, Véronique et al

Conference (2013, November 21)

Clostridium difficile is an anaerobic, spore-forming bacterium that remains the main cause of nosocomial diarrhoea in humans after use of antibiotics. C. difficile has also been described in other ... [more ▼]

Clostridium difficile is an anaerobic, spore-forming bacterium that remains the main cause of nosocomial diarrhoea in humans after use of antibiotics. C. difficile has also been described in other environments outside of hospitals, such as soil, river and seawater samples (Pasquale et al., 2011) and in animals, in which it can also cause enteric disease (Songer and Anderson, 2006). The possibility of transmission of C. difficile pathogenic isolates between animals, environments and humans has been suggested (Janezic et al., 2012). In recent years, the interest in C. difficile in food and in food animals has increased, leading to studying animals as a possible reservoir and a potential risk for food borne infections linked to C. difficile. Studies in various countries have determined differences in the prevalence of C. difficile in animals just before slaughter (Houser et al., 2012; Rodriguez et al., 2012) as well as in retail meat (Houser et al., 2012). In addition, many types, including PCR-ribotype 078, are present in humans, animals and meat (Janezic et al.; Weese et al., 2009). The objective of this study was to evaluate the presence of C. difficile at the slaughterhouse and in retail meat. Intestinal and carcass samples were collected from pigs and cattle at a single slaughterhouse. Raw meat (beef and pork) was obtained from the retail trade. C. difficile was isolated in 1% and 9.9% of the pig and cattle intestinal contents and in 7.9% and 7% of cattle and pig carcass samples respectively. From retail meat, C. difficile was recovered from 2.3% of the beef samples and from 4.7% of the pork samples. A total of 21 different PCR-ribotypes were identified with a large percentage of types 078 and 014. This study confirms that animals are carriers of C. difficile at slaughter, and that carcass contamination occurs inside the slaughterhouse. Furthermore the results obtained also reveal the presence of toxigenic C. difficile in retail meat in Belgium with a predominance of isolates correlated with the PCR-ribotypes involved in human C. difficile infections. [less ▲]

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See detailUse of supercritical carbon dioxide to prepare drug-loaded polymer implants
Champeau, Mathilde; Tassaing, Thierry; Thomassin, Jean-Michel ULg et al

Conference (2013, November 20)

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See detailSwitching to the Dark Side: Repositioning of Polyglutamine Repeat Promotes Amyloid Fibril Formation by the Model Protein, β-Lactamase BlaP
Thorn, David ULg; Pain, Coralie ULg; Scarafone, Natacha et al

Conference (2013, November 20)

Background: The expansion of polyglutamine (polyQ) repeats is associated with an increased propensity of the protein to aggregate into amyloid fibrils. There are ten human proteins presently known within ... [more ▼]

Background: The expansion of polyglutamine (polyQ) repeats is associated with an increased propensity of the protein to aggregate into amyloid fibrils. There are ten human proteins presently known within which polyQ expansion above a threshold length, e.g. 35-50 residues, leads to ten distinct neurodegenerative disorders [1], the most well-known being Huntington’s disease. While repeat length, aggregation, and disease are well correlated, recent studies suggest the non-polyQ regions of these proteins can also play a significant role, both preventative and facilitative, in the aggregation process. With the aim of exploring this role in more detail, we have engineered chimeric proteins via the insertion of polyQ repeats of various length (23, 30, 55, 79 Q) into two sites of antibiotic resistance enzyme BlaP β-lactamase from Bacillus licheniformis 749/C [2]. Questions addressed: How does polyQ repeat position affect the structure, stability and aggregation of polyQ proteins? Methods: Aggregation kinetics determined by monitoring the decrease in soluble protein fraction over time. Aggregate morphology examined by transmission electron microscopy. Protein stability derived from thermal or chemical unfolding transitions monitored by far-UV CD and intrinsic fluorescence. Results and discussion: PolyQ insertion at either of the two positions led to a decrease in thermodynamic stability that was largely independent of polyQ length. Chimeras with polyQ insertions at position 216 were destabilised to a much greater extent than those with insertions at position 197. The reduced stability of the 216 chimeras was associated with an increased aggregation propensity: (i) the minimum polyQ length leading to aggregation was lower, and (ii) the aggregation rate was significantly higher than that observed by 197 chimeras with equivalent polyQ lengths. Remarkably, the two sites of polyQ insertion are indeed very similar, both residing within flexible loop regions between stable α-helices. Moreover, the 216 chimeras exhibited a higher aggregation propensity than their 197 counterparts even under denaturing conditions, suggesting the disparity between the two chimeras cannot be accounted for by structural differences alone. These findings highlight the strong and complex influence of the overall protein context on polyQ-mediated aggregation. The molecular basis for the observed changes in stability and aggregation propensity is the subject of on-going work. [less ▲]

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See detailBio-inspired polymers for the functionalization of surfaces by green processes
Detrembleur, Christophe ULg

Conference (2013, November 20)

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See detailReversibly cross-linked polymer micelle as smart drug dellivery device
Lecomte, Philippe ULg; Riva, Raphaël ULg; Cajot, Sébastien et al

Conference (2013, November 20)

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See detailOrganocatalyzed ring-opening polymerization of cyclic phosphate monomers
Clement, Benoît ULg; Vanslambrouck, Stéphanie ULg; Koole, Leo H. et al

Conference (2013, November 19)

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See detailLe rêve dans la Théorie du film ou l'épistémologie de l'exilé
Barbion, Sébastien ULg

Conference (2013, November 19)

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See detailA Management Control Perspective of Sustainability Reporting in Higher Education: In Search of a Holistic View
Ceulemans, Kim; Van Caillie, Didier ULg; Molderez, Ingrid et al

Conference (2013, November 18)

Higher education institutions have been actively attempting to integrate sustainability in their curricula, research, operations, and outreach activities over the last decades. Despite the efforts ... [more ▼]

Higher education institutions have been actively attempting to integrate sustainability in their curricula, research, operations, and outreach activities over the last decades. Despite the efforts undertaken, it is currently still challenging for their internal and external stakeholders to assess an institution’s sustainability-related activities and the extent of their implementation within the different activities of higher education. Since sustainability reporting in higher education is currently still in its early stages, and because a holistic view of sustainability integration in higher education on a management level is often lacking, this paper researches possible contributions of management control to sustainability reporting and the sustainability integration process in higher education. The paper adheres to a management control approach by applying Simons’ (1995) Levers of Control Framework to the field of sustainability in higher education, in search for a theoretical framework for reporting and integrating sustainability on a strategic level into higher education institutions. The research stresses the need for a holistic approach and for further in-depth study into certain aspects of the control framework, i.e., practical implementation of vision and mission statements, the concept of materiality, staff development, diagnostic indicator development, and the study of stakeholder engagement processes in higher education [less ▲]

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See detailQuelles activités pour nos seniors souffrant de maladie de la mémoire ?
Adam, Stéphane ULg

Conference (2013, November 16)

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See detailVitamine D et Allergie
GADISSEUR, Romy ULg

Conference (2013, November 16)

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See detailLa vitamine D, état des lieux et recommandations
CAVALIER, Etienne ULg

Conference (2013, November 16)

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See detailLe plomb atmosphérique enregistré dans les stalagmites de Han-sur-Lesse
Allan, Mouhamd ULg; Verheyden, sophie

Conference (2013, November 16)

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See detailL’Afrique et la science impériale britannique dans une phase de transition: une étude de cas de l’expédition au Congo en 1816 sous la direction de James Hingston Tuckey
Vandersmissen, Jan ULg

Conference (2013, November 16)

This paper fits in a broader research project funded by the Belgian F.R.S.-Fonds national de la Recherche scientifique. It is entitled: Africa in the “science policies” of France and Great Britain from ... [more ▼]

This paper fits in a broader research project funded by the Belgian F.R.S.-Fonds national de la Recherche scientifique. It is entitled: Africa in the “science policies” of France and Great Britain from the eighteenth to the mid- nineteenth century: the scholarly background of the Scramble. This general project aims at completing in an original way recent studies on the interactions between the “New Science” derived from the Scientific Revolution and the building of colonial empires in the Atlantic area from the Enlightenment to the apogee of the first Industrial Revolution. Its objective is to investigate how in this period Africa has become a scientific object in its own right for the colonial administrations of France and Great Britain. Botanical knowledge (industrial plants, food crops and medicinal herbs) that originated in Africa was first applied in the plantations of slave economies in the Caribbean and North America. It was increased with knowledge about the geography and natural history of the continent’s interior through a revival of exploration in Africa itself. The project aims to relate the increased interest from scholars for Africa to the intensification of economic and military competition between the powers. It also wants to demonstrate how a more precise knowledge of the African terrain influenced the ways in which the governments of both countries have integrated colonial expertise in a complex science policy adapted to the specific needs of the two states. In this paper I will focus on the British side of the spectrum. I will investigate the changing British attitude towards Africa in the early nineteenth century through a case study of an expedition to the River Congo organized in 1816. Although this expedition ended in disaster (a majority of the members died in the course of the undertaking), it offers a series of useful examples that help to illustrate the transformation of British science policies under the pressure of competition with the French. Thus, it is my aim to show how Great Britain in the face of state-oriented French science has abandoned its policy of informal relationships and started to encourage its administration and scientific institutions to intervene more directly in exploration. Crucial in this evolution was the way in which the Admiralty absorbed the scholarly input of a number of learned societies and institutions, such as the Royal Society, the British Museum or the so-called “African Association” – the latter combining both scientific and commercial objectives. Thus the expedition illustrates the transition from Late Enlightenment “Banksian” exploration, inspired by the omnipotent science organizer Sir Joseph Banks (1743-1820), towards a more thorough imperial design of exploration under the command of Sir John Barrow (1764-1848). Already since the French conquest of Egypt, “scientific” expeditions relied on the collaboration between learned networks and the military, an example that would be copied later in Algeria. At the British side, it was the Admiralty that strengthened its grip on exploration. Tuckey’s expedition illustrates very well the amplification of operations, the more direct intervention by the government, and the growing importance of the commercial agendas of science. I will focus here on the interaction between the Admiralty and the learned societies with regard to the composition of the instruction text given to the leader of the expedition on the eve of his departure, on the specific choice of the area he had to explore (related to the “Niger question”), on the practical organization (e.g. the development of special steam engines by the engineer Watt, the scientific equipment offered with the help of the British Museum, etc.), on the choice of the scientists who formed a real team of experts (e.g. Christen Smith, John Cranch, etc.), on the collection of scientific data and their integration in collections in Britain, on the presentation of the expedition’s results in a published report entitled Narrative of an expedition to explore the river Zaire, usually called the Congo, in South Africa, in 1816, under the direction of Captain J. K. Tuckey, R.N., (London, 1818), and finally, on the circulation of these results in the rest of Europe due to the translation of the report in Dutch and French. [less ▲]

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See detailFilamentous fungi in water distribution systems: what is the risk?
Hayette, Marie-Pierre ULg

Conference (2013, November 14)

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See detailP.Vatic.Gr. inv. 11r : le "cadastre de Marmarique"
Ricciardetto, Antonio ULg

Conference (2013, November 14)

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See detailDo recent West African rainfall variations really impact the livestock in the Sahel?
Ozer, Pierre ULg

Conference (2013, November 14)

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See detailObservations sur la forme, l'état du support et la mise en page du P.Vat.gr. 11
Carlig, Nathan ULg

Conference (2013, November 14)

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See detailLe dossier papyrologique de Favorinos d'Arles
Marganne, Marie-Hélène ULg

Conference (2013, November 14)

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See detailVulnérabilité du patient âgé (en partenariat avec le Professeur A. BENETOS)
Petermans, Jean ULg

Conference (2013, November 14)

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See detailEUTHANASIE ET DEMENCE
Barthélemy, Nicole ULg; DAMAS, François ULg; ALLEPAERTS, Sophie ULg et al

Conference (2013, November 13)

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See detailSAHBNET, An Accessible Surface-Based Elastic Network to Insert a Protein in a Complex Lipid Membrane
Dony, Nicolas ULg; Crowet, Jean-Marc ULg; Joris, Bernard ULg et al

Conference (2013, November 11)

Study of membrane proteins have become one of the most challenging fields in biology. Solving their structure is one important step toward the understanding of their physiological activity but despite the ... [more ▼]

Study of membrane proteins have become one of the most challenging fields in biology. Solving their structure is one important step toward the understanding of their physiological activity but despite the recent advances in membrane protein crystallization, it represents less than 1 % of the entries in the Protein Data Bank. Therefore, calculation methods to study membrane proteins are helpful to complement experimental studies and fill the gap between the information obtained from the sequence and/or structure, the experimental results and the biological activity. Molecular Dynamics is a method of choice for membrane simulations and the rising of coarse-grained forcefields has opened the way to longer simulations with reduced calculations times. However, these approaches have two main drawbacks, the preparation of complex systems and the preservation of the 3D protein structure, which is not trivial in coarse grained approach. To circumvent these problems, we propose to use a modified version of the Gromacs tool genbox to easily insert lipids and a network based on hydrogen bonds and accessible surface to maintain the protein 3D structure. This protocol is available through a website (gcgs.gembloux.ulg.ac.be). [less ▲]

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See detailInfinite Depth: du Movie Ride à la 3D relief, l'expérience de la profondeur.
Thonon, Jonathan ULg

Conference (2013, November 10)

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See detailM.G. Vassanji’s A Place Within: Thinking through India, Transnationally
Munos, Delphine ULg

Conference (2013, November 10)

In their groundbreaking collection, Minor Transnationalism, Françoise Lionnet and Shu-mei Shih advocate a new approach to transnationalism, which, by shifting the ground of analysis to “transversal” ... [more ▼]

In their groundbreaking collection, Minor Transnationalism, Françoise Lionnet and Shu-mei Shih advocate a new approach to transnationalism, which, by shifting the ground of analysis to “transversal” movements of culture, departs from existing theoretical frameworks and allows for the emergence of “minor-to-minor networks” (8) that have the potential to circumvent the major altogether. Lionnet’s and Shih’s understanding of transnationalism not in terms of vertical relations between center and margin, but in terms of cultural transversalism, is particularly apt in the context of MG Vassanji’s writings, notably because his books often complicate those hackneyed notions of hybridity constructing Western locales as the privileged sites of plurality. In this paper, my contention is that Lionnet’s and Shih’s concept of ‘minor transnationalism’ also proves useful to deconstruct the discourse of ‘dominant’ Western-based diasporas that style themselves as “the legitimate archive with which to explore diasporic subjectivities” (Vijay Mishra, 3) — such as the hyper-visible ‘new’ Indian diaspora of global capital. Taking its cue from Lionnet’s and Shih’s concept of minor transnationalism, this paper looks at A Place Within (2008), the memoir of Vassanji’s travels across the land of his ancestors over two decades, with a view to showing how the author’s positionality as a ‘minor’ transnational (i.e. as a Canadian writer of Indian descent born on East-African soil) gives a new twist to the now-classic ‘return to the Indian homeland’ narrative — a staple, indeed, of the enormously popular Indian diasporic literature. At stake is the contention that Vassanji’s own brand of ‘minor transnationalism’ allows for a unique descent into the messiness of India, the ‘slippery’ nature of its past — well beyond diaspora’s dubious politics of retrieval and its investment in purist readings of the Indian homeland [less ▲]

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See detailCoupes sombres (Martin Arnold et Walt Disney)
Belloi, Livio ULg

Conference (2013, November 09)

À partir de 2010, l'œuvre du cinéaste expérimental autrichien Martin Arnold a connu une mutation profonde. Alors que ses œuvres précédentes s'employaient à détourner des films de fiction hollywoodiens, le ... [more ▼]

À partir de 2010, l'œuvre du cinéaste expérimental autrichien Martin Arnold a connu une mutation profonde. Alors que ses œuvres précédentes s'employaient à détourner des films de fiction hollywoodiens, le travail contemporain d'Arnold vise, quant à lui, à retravailler des fragments de dessins animés issus de la production Disney. La présente communication se propose d'examiner ce corpus contemporain et d'en dégager les enjeux. Une attention toute particulière est réservée à "Shadow Cuts" (2010), film à l'occasion duquel Arnold renoue avec ses premières amours (le scratching visuel et sonore). [less ▲]

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See detailY avait-il vraiment des Gestalten dans L’analyse des sensations d’E. Mach ?
Zincq, Aurélien ULg

Conference (2013, November 08)

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See detailLibraries and their Role in Open Access: Challenges and Opportunities
Morse, Laura; Renaville, François ULg; Stohn, Christine

Conference (2013, November 08)

The open access movement gains momentum with an increasing number of institutions and funders adopting open access mandates for their funded research. Consequently, an increasing amount of material ... [more ▼]

The open access movement gains momentum with an increasing number of institutions and funders adopting open access mandates for their funded research. Consequently, an increasing amount of material becomes freely available, either from institutional repositories or from traditional or newly established journals. Libraries can play a dual role in supporting this movement: Firstly, they can provide services supporting the deposit of research output in their institutional repositories, including support for making it widely discoverable via indexes such as Google Scholar and library discovery systems. Secondly, libraries can make open access materials discoverable by their patrons through such indexes, thus expanding their collection to include materials that they would not necessarily license. This session will describe the experience of the University Libraries of Liège in Belgium and Harvard. University of Liège chose a top-down approach and made it compulsory for researchers to deposit their output in the institutional repository—ORBi. To support this mandate, the library offers services that help researchers deposit and disseminate their publications. Both libraries—Liège and Harvard—enable their students and faculty to discover open access content beyond their library’s acquired collection via their library discovery system. The session will also address challenges that arise from indexing open access publications and how index providers and libraries can deal with such publications, especially with articles that are deposited in different institutional repositories or published in so-called hybrid journals that contain a mix of open access and subscription articles. Finally, we will discuss with the audience how they see libraries’ role evolving in this area, what challenges they are currently facing, and the solutions and opportunities they have found. [less ▲]

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See detailHéritages et stimulants à la courte histoire de la PESD/PSDC
Dumoulin, André ULg

Conference (2013, November 08)

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See detailInto the deep. La profondeur comme attraction dans les productions des Studios Disney
Tomasovic, Dick ULg

Conference (2013, November 08)

Depuis l’invention de la caméra multiplane en 1933 par l’ingénieur Bill Garity au sein des studios Disney, jusqu’à la création de la marque Disney Digital 3-D, en 2005, qui promeut le cinéma en relief ... [more ▼]

Depuis l’invention de la caméra multiplane en 1933 par l’ingénieur Bill Garity au sein des studios Disney, jusqu’à la création de la marque Disney Digital 3-D, en 2005, qui promeut le cinéma en relief stéréoscopique, les départements des effets spéciaux de la compagnie Disney se sont fortement investis dans la quête pour une restitution impressionnante, voire spectaculaire, de la profondeur de champ. Détaillant les illusions optiques de films aussi divers que The Old Mill (1937), Snow White and the Seven Dwarfs (1937), Bolt (2008), Alice in Wonderland (2010), ou Tron : Legacy (2011), cette intervention s’interroge également sur les présupposés idéologiques du simulacre de la profondeur chez Disney, qui se trouvent par ailleurs prolongés tant dans l’architecture des parcs à thèmes Disney que dans les dispositifs de nombre de leurs attractions. [less ▲]

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See detailMeasuring the thermophysical properties of materials at high temperature - Application to the additive manufacturing of alloy Ti-6Al-4V and of stainless steel 316L
Mertens, Anne ULg; Paydas, Hakan ULg; Reginster, Sylvie ULg et al

Conference (2013, November 07)

In view of optimising the microstructures of metallic materials and obtaining the desired properties, the accurate characterisation of the thermophysical behaviour of these materials has long been ... [more ▼]

In view of optimising the microstructures of metallic materials and obtaining the desired properties, the accurate characterisation of the thermophysical behaviour of these materials has long been considered of paramount importance e.g. by allowing for the in-situ study of phase transformations, by providing data for numerical simulations and, essentially, by contributing to a better understanding of the fundamental mechanisms at play during processing. In the present work, the thermophysical behaviour of Ti-alloy Ti-6Al-4V and of stainless steel 316L has been characterised in details, in order to reach a better understanding of the phenomena controlling the microstructures and mechanical properties of parts made by additive manufacturing techniques that appear nowadays very promising in view of the economic production of near-net-shape, complex and (almost) fully dense parts from metallic materials. In particular, the thermal conductivity of Ti-alloy Ti-6Al-4V and of stainless steel 316L at high temperature has been determined by combining dilatometry, Differential Scanning Calorimetry (DSC) and laser flash diffusivimetry based on Laplace’s equation : k(T)=α(T)ρ(T)Cp(T) where k(T) is the thermal conductivity (W/m*K) α(T) is the thermal diffusivity (mm2/s) ρ(T) is the specific mass (g/cm3) Cp(T) is the specific heat capacity (J/g*K). Since Ti-alloy Ti-6Al-4V and stainless steel 316L exhibit quite different physical behaviours, their careful comparison is shown to shed more light into the role of phenomena such as epitaxial growth, out-of-equilibrium phase transformations and/or internal stresses in the additive manufacturing of metallic materials. [less ▲]

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See detailStudying Vulnerability: Participation and Incident Reports
Rossignol, Nicolas ULg

Conference (2013, November 07)

Scholars in many fields of research have developed models, theories and concepts attempting to grasp and manage dangers that are often difficult to concretely imagine. Their final objective is to maintain ... [more ▼]

Scholars in many fields of research have developed models, theories and concepts attempting to grasp and manage dangers that are often difficult to concretely imagine. Their final objective is to maintain the safety of the system considered. Dealing with potential hazards, some researchers distinguish between the vulnerability approach and the risk approach. The risk based approach is focused on acquiring accurate probabilistic information about the events themselves. Yet, Sarewitz (2003: 806) reminds that “there are numerous cases in which accurate assessment of risk is impossible” and that “lack of experience with many phenomena and outcomes means that understanding the uncertainty of the uncertainty estimates is impossible”. Thus, beyond the risk-based approach, another perspective emerged: vulnerability analysis (VA). Vulnerability can be described as “the degree to which a system, subsystem, or system component is likely to experience harm due to exposure to a hazard” (Turner et al. 2003: 8074). VA seems capable of overcoming the shortcomings of risk analysis in situations where knowledge about both probabilities and outcomes is incomplete or insufficient (Sarewitz 2003). The vulnerability approach and the classical risk analysis approach are thus based on different premises (Gilbert 2006): while risk analysis focuses on the hazard, VA focuses on the system under threat. From that starting point, we realized in order to analyse the state-of-the art in the field of vulnerability analysis, with particular emphasis on participatory approaches. The aims were: i) to study how the concept of vulnerability has been defined and used in different fields of application (e.g. natural and industrial hazards) and ii) to analyse whether the theoretical claim that participatory approaches to vulnerability analysis have the potential for great scientific and political outputs has been actually demonstrated in practice. Based on this study we formulate a threefold critique: first, VA has been treated separately in natural and technological hazards fields. This separation is unproductive for a fine-grained understanding of what vulnerability can provide as a concept, as it prevents vulnerability to unleash the full range of its potential. Second, VA focused on assessment tools that are mainly quantitative, whereas qualitative appraisal is a key to assess vulnerability in a comprehensive way and to inform policy-making. Third, a systematic literature review on participatory VA case studies allows us to argue that participation has been important to address the above, but it remains too closed down in its approach and would rather benefit from embracing a more opened, encompassing perspective. Therefore, we suggest re-thinking participatory VA as one part of a dynamic process between opening-up and closing-down strategies, in order to support a reflexive vulnerability governance framework. Doing so is not exempt of challenges, though. Since analytical reflection on vulnerability is to be transferred into practices of risk and vulnerability governance, taking into account the context in which governance agents need to take appropriate decisions is of primary importance. Thus, based on the conclusion of this presentation, the practical ways of realizing a reflexive vulnerability governance should now be explored. [less ▲]

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See detailMeasuring feet trajectories: challenges and applications
Pierard, Sébastien ULg; Azrour, Samir ULg; Van Droogenbroeck, Marc ULg

Conference (2013, November 07)

Measuring reliable feet trajectories is needed in many applications. This paper provides the principles used in GAIMS, which is a non-intrusive system that measures feet trajectories based on multiple ... [more ▼]

Measuring reliable feet trajectories is needed in many applications. This paper provides the principles used in GAIMS, which is a non-intrusive system that measures feet trajectories based on multiple range laser scanners. We present the technical challenges that we had to address, as well as an overview of the implemented processing pipeline of GAIMS. [less ▲]

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See detail"Climate change" and vulnerability analysis: poor will become poorer
Ozer, Pierre ULg

Conference (2013, November 07)

The recent Intergovernmental Panel on Climate Change’s Fifth Assessment Report (IPCC-AR5) considers new evidence of climate change based on many independent scientific analyses from observations of the ... [more ▼]

The recent Intergovernmental Panel on Climate Change’s Fifth Assessment Report (IPCC-AR5) considers new evidence of climate change based on many independent scientific analyses from observations of the climate system, paleoclimate archives, theoretical studies of climate processes and simulations using climate models. “Warming of the climate system is unequivocal, and since the 1950s, many of the observed changes are unprecedented over decades to millennia. The atmosphere and ocean have warmed, the amounts of snow and ice have diminished, sea level has risen, and the concentrations of greenhouse gases have increased”. “Changes in many extreme weather and climate events have been observed since about 1950. It is very likely that the number of cold days and nights has decreased and the number of warm days and nights has increased on the global scale”. “It is likely that the frequency of heat waves has increased”. “There are likely more land regions where the number of heavy precipitation events has increased than where it has decreased”. “The frequency or intensity of heavy precipitation events has likely increased”. In the meantime, it is now well known that climate change consequences (increasing magnitude and frequency of droughts, floods, storms and/or coastal erosion) will mainly impact the most vulnerable. Although there are multiple ways to define vulnerability, we here define vulnerability as the exposure of individuals or collective groups to livelihood stress as a result of the impacts of such climate change and consecutive socioeconomic and environmental changes. In the context of this paper, we will focus on natural disasters induced by “climate change”. We will travel across developing countries to illustrate the increasing vulnerability of the poor and the way they –sometimes– develop effective adaptation responses. We conclude that, for many reasons (mainly the protection of individual, financial and/or political interests), the poor will become poorer. [less ▲]

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See detailPotential paleoseismological records in the Western Gulf of Corinth sediments (Greece) for the last 500 years
Beckers, Arnaud ULg; Mortier, Clément; Beck, Christian et al

Conference (2013, November 06)

Related to the Gulf of Corinth rifting, five earthquakes of magnitude greater than 5.8 occurred in the last 35 years. Consequently, the question of earthquake (EQ) hazard is particularly relevant. Onland ... [more ▼]

Related to the Gulf of Corinth rifting, five earthquakes of magnitude greater than 5.8 occurred in the last 35 years. Consequently, the question of earthquake (EQ) hazard is particularly relevant. Onland paleoseismological data are scarce and offshore data were absent before the present study. We investigated recent sediments bounding three well-defined major seismogenic faults: Aegion, Trizonia and Psathopyrgos faults. We retrieved 12 gravity cores from 50 to 85 cm long in three distinct sites: the southern shelf (40 to 50 m deep), a 180 m deep sub-basin, and a transect from the southern coast to the center of the gulf. Chronology is based on 137Cs (Atmospheric Nuclear Experiments) and 210Pb decay for two sites (Aegion and Trizonia). Considering sedimentation rates estimates in these areas, the longer cores record about 500 years of sedimentary archives. We performed granulometry, magnetic susceptibility, loss on ignition and geochemical (X-Ray Fluorescence) measurements on cores from each site. Some samples were observed with a binocular to identify the nature of the grains. We sought to identify layers potentially attributed to EQ-related processes like liquefaction and tsunamis for the sites on the shelves or mass transport and turbidity currents for the basins. In Aegion, 3 coarser layers have been identified at identical depth in 3 cores across the scarp. 210Pb decay show erosion just under the first event, that we attributed to the 1995 tsunami (backwash deposit) (figure). In the Trizonia Sub-Basin, among 3 clear grain-size peaks, two have been attributed to the 1817 Aegion EQ and the 1660 Galaxidi EQ. In Psathopyrgos, 10 “events” (grain-size and Zr/Rb peaks) have been identified in the deepest part of the transect and at least 2 on the shelf. Their analysis is in progress. [less ▲]

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See detailNew tools for the dairy sector based on MIR and NIR spectroscopy
Grelet, Clément; Dehareng, Frédéric; Vanlierde, Amélie et al

Conference (2013, November 05)

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See detailTechniques de marquages et de suivis de poissons de repeuplement
Ovidio, Michaël ULg

Conference (2013, November 05)

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See detailProbiotics and health claims in Europe
Delcenserie, Véronique ULg

Conference (2013, November 05)

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See detailBeyond the "three-second fish memory" folk psychology belief: experimental evidences from active avoidance conditioning in goldfish to olfactory learning in carp and miscellaneous training in zebrafish or other teleost fishes.
Ylieff, Marc ULg

Conference (2013, November 05)

Learning abilities have been widely documented in rodents from experimental psychological studies for a long time. However, learning and memory play a pivotal role in the behavioural development of all ... [more ▼]

Learning abilities have been widely documented in rodents from experimental psychological studies for a long time. However, learning and memory play a pivotal role in the behavioural development of all vertebrates, and fish are no exception. Several typical “fish examples” illustrate the oral presentation. [less ▲]

Detailed reference viewed: 28 (8 ULg)
See detailQuelques clés pour comprendre le DICTIONNAIRE ÉTYMOLOGIQUE ROMAN (DÉRom)
Baiwir, Esther ULg

Conference (2013, November 04)

Le projet DÉRom est certainement l'entreprise la plus innovante pour l'étude historique du lexique roman depuis le Romanisches Etymologisches Wörterbuch de Wilhelm Meyer-Lübke. Lors de cette communication ... [more ▼]

Le projet DÉRom est certainement l'entreprise la plus innovante pour l'étude historique du lexique roman depuis le Romanisches Etymologisches Wörterbuch de Wilhelm Meyer-Lübke. Lors de cette communication, nous avons tenté de mettre en lumière quelques-uns des apports théoriques et méthodologiques du projet, lancé en janvier 2008 par Éva Buchi (aujourd'hui directrice du laboratoire ATILF, Nancy) et Wolfgang Schweickard (professeur de philologie romane à l'Université de la Sarre, Sarrebruck). L'axiome principal, qui semble tout à fait évident mais dont les implications ont rarement été mesurées en linguistique romane, est qu'une langue écrite ne peut être l'ancêtre d'une langue orale. Dès lors, la reconstruction de la proto-langue ne peut s'appuyer que sur la comparaison des cognats romans, sans tenir compte, dans un premier temps, du témoignage des textes latins. [less ▲]

Detailed reference viewed: 27 (9 ULg)
See detailADAMTS-3 deficiency is embryonic lethal in mouse and zebrafish.
Janssen, Lauriane ULg; Dubail, Johanne; Dupont, Laura ULg et al

Conference (2013, November)

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See detailTowards a typology of sustainable job transition supports
Lorquet, Nadège ULg

Conference (2013, November)

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See detailAntitrust Damages in EU Law and Policy : Jurisdiction Issues and Applicable Law: Brussels I, Rome I and II
Francq, Stéphanie; Wautelet, Patrick ULg

Conference (2013, November)

This presentation (co-authored with Prof. Stéphanie Francq - UCLouvain) gives an overview of the main issues arising in relation to the private enforcement of competition law within the EU, from a private ... [more ▼]

This presentation (co-authored with Prof. Stéphanie Francq - UCLouvain) gives an overview of the main issues arising in relation to the private enforcement of competition law within the EU, from a private international law perspective. The focus is on the determination of the jurisdiction and of the applicable law [less ▲]

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See detailA comparison of within-season yield prediction methodologies
Dumont, Benjamin ULg; Basso, Bruno; Bodson, Bernard ULg et al

Conference (2013, November)

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See detailCorps commun et rupture anthropologique dans la schizophrénie
Englebert, Jérôme ULg

Conference (2013, November)

S’agissant d’une référence qui demeure incontournable en psychologie clinique et en psychopathologie, nous proposons de partir du cadre psychanalytique. Nous ferons le constat de difficultés tant ... [more ▼]

S’agissant d’une référence qui demeure incontournable en psychologie clinique et en psychopathologie, nous proposons de partir du cadre psychanalytique. Nous ferons le constat de difficultés tant théoriques que techniques concernant les notions d’espace, de temps et, plus fondamentalement, concernant le corps qui est cantonné à sa disposition hystérique. Par ailleurs, nous verrons que la phénoménologie permet de penser ce corps en tant que fondement de notre identité et de notre relation à l’autre. Il s’agit d’une donnée implicite qui n’est pas interrogée, une « sentinelle silencieuse » pour reprendre les propos de Merleau-Ponty. À partir de là, nous pourrons exposer en quoi la problématique schizophrénique se situe au niveau d’une rupture anthropologique quant à la manière de vivre son corps. Nous développerons également la différence qu’il y a entre le corps-pour-soi et le corps-pour-autrui et celle entre le corps paranoïde et le corps paranoïaque. Enfin, en guise de mise en perspective, nous développerons les concepts deleuzien de territorialisation et de ritournelle et montrerons en quoi le clinicien, s’il a à prendre en compte le corps de son patient dans sa réflexion, doit avant tout accepter de mobiliser son propre corps, de toucher son patient, de l’observer et de se laisser toucher par lui. [less ▲]

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See detailFeedbacks correctifs écrits en anglais langue étrangère et attentes des élèves du secondaire
Noiroux, Kevin ULg

Conference (2013, November)

Grâce à des recherches qui montrent que l’élève ne s’améliore pas après avoir été corrigé, certains chercheurs pensent que la correction des erreurs écrites n’a pas sa place dans l’enseignement d’une ... [more ▼]

Grâce à des recherches qui montrent que l’élève ne s’améliore pas après avoir été corrigé, certains chercheurs pensent que la correction des erreurs écrites n’a pas sa place dans l’enseignement d’une langue étrangère. Cet article a pour but d’analyser les attentes des élèves pour voir s’ils sont demandeurs ou pas de corrections. Nos résultats montrent que les élèves du secondaire de Fédération Wallonie-Bruxelles veulent non seulement être corrigés, mais qu’ils s’intéressent de très près à la compréhension de leurs erreurs. Il faut cependant noter que les erreurs semblent être corrigées dans le cadre d’évaluations certificatives, ce qui est potentiellement inéquitable. [less ▲]

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See detailIntensification durable de l’agriculture au Bénin, mythe ou réalité ? Une analyse à partir des systèmes de coton biologique et Cotton made in Africa.
Assogba, Sonagnon Claude-Gervais ULg; Tossou, Cocou Rigobert; Lebailly, Philippe ULg et al

Conference (2013, November)

In agriculture, the concept of sustainable development emergence and its omnipresence in political discourses suggests that farming systems move toward systems considered as more environment-friendly and ... [more ▼]

In agriculture, the concept of sustainable development emergence and its omnipresence in political discourses suggests that farming systems move toward systems considered as more environment-friendly and human health-friendly. In Benin, cotton is one of the most sectors concerned by this transformation. Indeed, in spite of the importance of cotton in the economy of Benin, its sustainable production is nowadays threatened by conventional production approach. Various alternatives of production are developed and considered as more environment-friendly than the conventional production approach. This article analyses the sustainability of the organic and cotton made in Africa (CmiA) farming alternatives from the sustainable agricultural intensification theoretical perspective. Structured and non-structured interviews with individuals and focus groups were used to collect data from 90 organic cotton farmers of the municipality of Kandi, and 100 CmiA farmers of the municipality of Pehunco, one of the largest areas of cotton production in the North of Benin. Data were analyzed with methods of normative and relativist comparison, descriptive statistics and analysis of variance. Kolmogorov-Smirnov (K-S) test was used to verify the normality conditions and in some cases, logarithmic transformation was done to test the variance homogeneity. The comparison of means was done with the test of Least Significant Difference. It appears from the results that in the current condition of implementation, the alternatives system to conventional cotton production approach are not intensively sustainable. Soils fertility and pests’ management face enormous constraints and do not allow improvement of yields, economic performances, and environment protection. So, the sustainability of the alternative systems of cotton production is not guaranteed and can hardly become a reality if additional relevant conditions are not created. [less ▲]

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See detailLIPID INTERACTION PROPERTIES OF NOVEL RHAMNOLIPIDS
Nasir, Mehmet Nail ULg; Crowet, Jean-Marc ULg; Lins, Laurence ULg et al

Conference (2013, November)

Biosurfactants which are surface active molecules produced by micro-organisms present a wide structural diversity (glycolipids, lipoaminoacids, lipopeptides, polymers,...) and numerous advantages compared ... [more ▼]

Biosurfactants which are surface active molecules produced by micro-organisms present a wide structural diversity (glycolipids, lipoaminoacids, lipopeptides, polymers,...) and numerous advantages compared to their chemically synthesized counterparts. Among glycolipids, rhamnolipids which are secondary metabolites produced mainly by strains of Pseudomonas aeruginosa, have drawn particular attention as they have several interesting biological properties such as antimicrobial, antiphytoviral, zoosporicidal and plant defense elicitor activities [1-3]. It is generally recognized that these activities must be linked to the interaction of these molecules with constituents of biological membranes [4] but the detailed mechanism is far from being fully understood. In our laboratory, new rhamnolipids with various chain lengths and with or without a terminal carboxylic acid function were obtained via the development of a synthesis procedure consisting of two biocatalyzed steps involving naringinase and lipase [5]. The objective of this work was to investigate their interaction with model membranes in relation with their structure in order to give insight about the mechanism of their biological action. A range of complementary experimental and modelling methods was used to analyze their interaction with membrane models. Results reveal differential interaction with lipids according to the structure of the rhamnolipid. The nature of the lipid is also a key parameter for the ınteractions. [less ▲]

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See detailBONE SIALOPROTEIN AS A KEY FACTOR IN THE PATHOPHYSIOLOGY OF OSTEOARTHRITIS
Pesesse, Laurence ULg; Sanchez, Christelle ULg; Walsh, David et al

Conference (2013, November)

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See detailComment concilier flexibilité et sécurité en TPE/PME ?
Beuker, Laura ULg; Gérard, Julie ULg; Schoenaers, Frédéric ULg et al

Conference (2013, November)

Face à la libéralisation du marché, à l’externalisation des échanges et aux progrès technologiques, les entreprises doivent, à présent, jongler entre des dispositifs et des mesures destinés à assouplir le ... [more ▼]

Face à la libéralisation du marché, à l’externalisation des échanges et aux progrès technologiques, les entreprises doivent, à présent, jongler entre des dispositifs et des mesures destinés à assouplir le marché du travail, tout en procurant une certaine sécurité et stabilité à leur main-d’œuvre. C’est dans ce cadre que cette communication vise à comprendre et à saisir la manière dont les très petites entreprises (TPE) et les petites et moyennes entreprises (PME) belges francophones tentent de concilier flexibilité et sécurité dans ce contexte de mondialisation et de concurrence exacerbée (Auer, 2008). En d’autres termes, nous verrons d’une part, quels dispositifs de flexibilité et de sécurité ces deux types d’entreprise mobilisent dans leur gestion de l’emploi et d’autre part, dans quelle mesure ces dispositifs sont propres à leurs structures configurationnelles et pratiques de gestion des ressources humaines (GRH), à l’aune de la théorie de la contingence structurelle (Mintzberg, 1982 ; Pichault et Nizet, 2000). À l’aide de 67 entretiens semi-directifs réalisés au sein de 54 TPE/PME belges, nous déterminerons tout d’abord, les pratiques de GRH véhiculées sur base d’indicateurs de flexibilité et de sécurité préalablement définis et ensuite, le type de configuration prédominant en proposant un modèle explicatif des facteurs et enjeux influençant ces pratiques. [less ▲]

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See detailASSOCIATION BETWEEN CHONDROCYTE HYPERTROPHY AND ANGIOGENESIS OF CARTILAGE IN OSTEOARTHRITIS
Pesesse, Laurence ULg; Sanchez, Christelle ULg; Delcour, Jean-Pierre et al

Conference (2013, November)

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See detailComparaison de techniques CND émergentes sur des pièces aéronautiques en matériaux composites
Georges, Marc ULg; Thizy, Cédric ULg; Lewandowski, Jacques et al

Conference (2013, November)

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See detailNouveaux modes de prise en charge des carrières « déliées » : une innovation institutionnelle ?
Pichault, François ULg; Dervaux, Amélie ULg; Vrancken, Didier ULg et al

Conference (2013, November)

La notion de « carrières déliées » a souvent été associée à un pilotage de la trajectoire professionnelle par l’individu lui-même. Divers dispositifs d’intermédiation ont pourtant vu le jour pour aider à ... [more ▼]

La notion de « carrières déliées » a souvent été associée à un pilotage de la trajectoire professionnelle par l’individu lui-même. Divers dispositifs d’intermédiation ont pourtant vu le jour pour aider à la prise en charge de ces nouvelles formes de carrière. A l’aide d’une étude de cas dans le secteur artistique belge, nous approfondissons ici la capacité d’un dispositif militant, explicitement tourné vers une transformation du marché du travail, à s’inscrire dans un processus d’innovation institutionnelle. Nous montrons que cette innovation consiste en un déplacement de l’objet même de la prise en charge, passant désormais de la relation d’emploi à la transition professionnelle, probablement annonciatrice de mutations plus profondes sur le marché du travail. [less ▲]

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See detailDechloranes: The next Emerging POP?
Brasseur, Catherine ULg; L'Homme, Benjamin ULg; PIRARD, Catherine ULg et al

Conference (2013, November)

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See detailGeneralized Pointwise Hölder Spaces
Nicolay, Samuel ULg; Kreit, Damien

Conference (2013, October 31)

In [8,7], the properties of generalized uniform Hölder spaces have been investigated. The idea underlying the definition is to replace the exponent α of the usual spaces Λ^α(R^d) (see e.g. [6]) with a ... [more ▼]

In [8,7], the properties of generalized uniform Hölder spaces have been investigated. The idea underlying the definition is to replace the exponent α of the usual spaces Λ^α(R^d) (see e.g. [6]) with a sequence σ satisfying some conditions. The so-obtained spaces Λ^σ(R^d) generalize the spaces Λ^α(R^d); the spaces Λ^σ(R^d) are actually the spaces B^{1/σ_{∞,∞}(R^d), but they present specific properties (induced by L^∞-norms) when compared to the more general spaces B^{1/σ}_{p,q}(R^d) studied in [2,4,1,5,9,10] for example. Indeed it is shown in [8,7] that most of the usual properties holding for the spaces Λ^α(R^d) can be transposed to the spaces Λ^σ(R^d). Here, we introduce the pointwise version of these spaces: the spaces Λ^{σ,M}(x_0), with x_0∈R^d. Let us recall that a function f∈L^∞_loc(R^d) belongs to the usual pointwise Hölder space Λ^α(x_0) (α>0) if and only if there exist C,J>0 and a polynomial P of degree at most α such that sup_{|h|≤2^{−j}} |f(x_0+h)−P(h)|≤C2^{−jα}. As in [8,7], the idea is again to replace the sequence (2^{−jα})_j appearing in this inequality with a positive sequence (σ_j)j such that σ_{j+1}/σ_j is bounded (for any j); the number M stands for the maximal degree of the polynomial (this degree can not be induced by a sequence σ). By doing so, one tries to get a better characterization of the regularity of the studied function f. Generalizations of the pointwise Hölder spaces have already been proposed (see e.g. [3]), but, to our knowledge, the definition we give here is the most general version and leads to the sharpest results. [1] Alexandre Almeida. Wavelet bases in generalized Besov spaces. J. Math. Anal. Appl., 304(1):198–211, 2005. [2] António M. Caetano and Susana D. Moura. Local growth envelopes of spaces of generalized smoothness: the critical case. Math. Inequal. Appl., 7(4):573–606, 2004. [3] Marianne Clausel. Quelques notions d'irrégularité uniforme et ponctuelle : le point de vue ondelettes. PhD thesis, University of Paris XII, 2008. [4] Walter Farkas. Function spaces of generalised smoothness and pseudo-differential operators associated to a continuous negative definite function. Habilitation Thesis, 2002. [5] Walter Farkas and Hans-Gerd Leopold. Characterisations of function spaces of generalised smoothness. Ann. Mat. Pura Appl., IV. Ser., 185(1):1–62, 2006. [6] Steven G. Krantz. Lipschitz spaces, smoothness of functions, and approximation theory. Exposition. Math., 1(3):193–260, 1983. [7] Damien Kreit and Samuel Nicolay. Characterizations of the elements of generalized Hölder-Zygmund spaces by means of their representation. J. Approx. Theory, to appear, 10.1016/j.jat.2013.04.003. [8] Damien Kreit and Samuel Nicolay. Some characterizations of generalized Hölder spaces. Math. Nachr., 285(17-18):2157–2172, 2012. [9] Thomas Kühn, Hans-Gerd Leopold, Winfried Sickel, and Leszek Skrzypczak. Entropy numbers of embeddings of weighted Besov spaces II. Proceedings of the Edinburgh Mathematical Society (Series 2), 49(02):331–359, 2006. [10] Susana D. Moura. On some characterizations of Besov spaces of generalized smoothness. Math. Nachr., 280(9-10):1190–1199, 2007. [less ▲]

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See detailL’activité physique Quoi? Pourquoi? Comment?
Cloes, Marc ULg

Conference (2013, October 30)

L’activité physique et la sédentarité sont deux notions qui font partie de notre vie quotidienne. Il apparait toutefois que le public ne se construit pas toujours des représentations adéquates à leur ... [more ▼]

L’activité physique et la sédentarité sont deux notions qui font partie de notre vie quotidienne. Il apparait toutefois que le public ne se construit pas toujours des représentations adéquates à leur propos alors que, parties intégrantes de notre style de vie, elles jouent un rôle fondamental dans la santé de chacun d’entre nous. L’exposé, qui se veut interactif, portera donc sur la définition des concepts avant d’aborder les effets de la pratique et d’analyser les recommandations internationales en la matière. Par son côté ludique, l’intervention permet de prendre conscience de certaines mauvaises représentations et/ou de lacunes au niveau de connaissances qui concernent la santé publique. Les échanges permettront par ailleurs de dégager des pistes d’action concrètes pouvant aisément être mises en place. [less ▲]

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See detailRe-reading decorum – Introducing formality
Gillen, Todd Jonathan ULg

Conference (2013, October 30)

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See detailAnatase TiO2 colloidal nanocrystal-based architectures: models to assess the role of porosity and nanocrystal morphology in Li battery electrode
Krins, Natacha ULg; Buonsanti, Raffaella; Kim, Chunjoong et al

Conference (2013, October 30)

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See detailAs if spoken: What do we really know about Late Egyptian as a vernacular language?
Winand, Jean ULg

Conference (2013, October 29)

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See detailLa perception des Gestalten selon Chr. von Ehrenfels
Zincq, Aurélien ULg

Conference (2013, October 28)

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See detailThe role of siblings in the coming out process: research and vignettes
Haxhe, Stéphanie ULg; D'Amore, Salvatore ULg

Conference (2013, October 26)

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See detailA four-year inventory of the invasive ladybeetle Harmonia axyridis in agricultural ecosystems
Vandereycken, Axel ULg; Durieux, Delphine ULg; Joie, Emilie ULg et al

Conference (2013, October 26)

The Multicoloured Asian Ladybird, Harmonia axyridis Pallas (Coleoptera: Coccinellidae) is known to thrive principally in shrubby and arboreal habitats. Its occurrence in agroecosystems remains poorly ... [more ▼]

The Multicoloured Asian Ladybird, Harmonia axyridis Pallas (Coleoptera: Coccinellidae) is known to thrive principally in shrubby and arboreal habitats. Its occurrence in agroecosystems remains poorly documented. This study focuses on the occurrence of this exotic species and its seasonal abundance in various field crops. The abundance of adults and larvae of H. axyridis was evaluated over a four-year period, from 2009 to 2012, in four important agronomical crops (wheat, corn, broad bean and potato) in Belgium. A total of 28 aphid predator species were observed including 14 coccinellid species, 13 hoverfly species and one lacewing species. H. axyridis is present and reproduces in all of the four crops studied, with the largest numbers recorded in corn and broad bean crops. In corn, H. axyridis numbers were found to increase over the four inventoried year, reaching 86% of the aphid predators in 2012, while it represented only 15% in 2009. H. axyridis was not always recorded where aphids were abundant, e.g. aphids were abundant on wheat where no H. axyridis were recorded. H. axyridis starts reproducing after the peak in aphid population, suggesting that H. axyridis is able to complete its development by feeding on alternative prey such as larvae and pupae of the same and other species of ladybird and other aphidophagous species. H. axyridis is often considered to be bivoltine but it only completes one generation per year in field crops. The second generation generally develops late in the season in other habitats. Harmonia axyridis is an invasive and an intraguild predator present in high quantities in some specific crops. In these crops, H. axyridis could negatively impact on population of native species due to IGP observed in several other studies. [less ▲]

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