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See detailPatrones de evolución morfológica de la región cefálica en damiselas (Perciformes, Pomacentridae) del Pacífico Oriental
Aguilar-Medrano, Rosalia; Frederich, Bruno ULg; De Luna, Efrain et al

Conference (2010, October)

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See detailImmeubles et responsabilité extracontractuelle : questions diverses
Lecocq, Pascale ULg; Kohl, Benoît ULg

Conference (2010, October)

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See detailReconsidering the extinction of ichthyosaurs
Fischer, Valentin ULg

Conference (2010, October)

Despite their extreme adaptation to life in open sea, ichthyosaurs were one of the first major groups of post-Triassic marine reptiles to disappear, at the end of Cenomanian, whereas plesiosaurs ... [more ▼]

Despite their extreme adaptation to life in open sea, ichthyosaurs were one of the first major groups of post-Triassic marine reptiles to disappear, at the end of Cenomanian, whereas plesiosaurs, mosasaurs and numerous families of marine crocodiles and sea turtles disappeared during the Cretaceous/Paleocene Extinction Event. It has been proposed that unique biological factors drove ichthyosaurs to extinction, namely a break in the food chain at the level of belemnites or a progressive ecological replacement by teleost fishes since the Middle Jurassic. However, new discoveries in France and Russia turn both these hypotheses unsatisfactory because ichthyosaur diversity remained high during the Early Cretaceous both from taxonomic and ecological points of view, with the persistence of several Late Jurassic genera into the Early Cretaceous and the colonization of various feeding guilds. The extinction of ichthyosaurs during the Cenomanian was therefore more sudden than previously described. The present study aims at replacing the extinction of ichthyosaurs within the global context of changes in marine ecosystems during the ‘middle’ Cretaceous. The ‘middle’ Cretaceous (Aptian-Turonian) is indeed punctuated by numerous and profound global climatic and oceanic changes, as well as intense underwater volcanism. These factors led to recurrent anoxic events, sometimes of worldwide extension. Interestingly, the peak of changes in the geosphere, taking place during the Cenomanian, coincides with major biological changes within the marine realm: the rise of polycotylid plesiosaurs, marine squamates, teleost fishes and chondrichtyans, the onset of the “Chalk sea”, and an extinction within marine invertebrates communities. Ichthyosaurs disappeared during this profound reorganization of the marine ecosystems. However, the precise mechanisms that lead to the sudden extinction of these successful marine reptiles cannot be understood in the current state of our knowledge given the multitude of possible causes occurring at the same time. [less ▲]

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See detailChanging species diversities in Pennsylvanian tropical wetland communities
Cleal, Christopher J.; King, Sara C.; Cascales - Miñana, Borja ULg et al

Conference (2010, October)

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See detailEffect of parent materials and land use on soil phosphorus characteristics in Southern Belgium
Renneson, Malorie ULg; Dufey, Joseph; Bock, Laurent ULg et al

Conference (2010, September 29)

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See detailOptimization of ligand-binding assay in a QbD environment. Use of Bayesian non-linear regression to set up probability profile as quality response
Lebrun, Pierre ULg; Boulanger, Bruno ULg; Hubert, Philippe ULg

Conference (2010, September 28)

For ligan-binding assay, different parameters are controlled in routine. In a development phase, we will show how design of experiment can be used to select these parameters to obtain reliable results in ... [more ▼]

For ligan-binding assay, different parameters are controlled in routine. In a development phase, we will show how design of experiment can be used to select these parameters to obtain reliable results in the future use of the ELISA test. Uncertainties of measurements and models should be taken into account in a predictive manner. Bayesian modelling and MCMC simulations are well suited for this purpose and are flexible enough to include random effects on the parameters on non-linear model. We will focus on 4PL regression as it is encountered in most applications. We will also show that deriving a quality response such as a precision profile is clear and direct in the Bayesian setting. The approach is fully compliant with QbD guidelines and Design Space definition. [less ▲]

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See detailSedation and locoregional Anesthesias of the head in the horse
Verwilghen, Denis ULg

Conference (2010, September 25)

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See detailNIR AND RAMAN SPECTROSCOPY AS PAT TOOLS FOR THE MANUFACTURING OF SILICONE-BASED DRUG RESERVOIRS
Mantanus, Jérôme ULg; Ziemons, Eric ULg; Van Butsele, Kathy et al

Conference (2010, September 24)

Detailed reference viewed: 126 (30 ULg)
See detailOrthodontic corrections (Overjet/overbite) foals and osteodistraction adult horse
Verwilghen, Denis ULg

Conference (2010, September 24)

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See detailDes idéologies aux dénominations et des dénominations à l'histoire : les enjeux de la terminologie métalinguistique dans l'historiographie du français d'Acadie et de Louisiane
Urbain, Emilie ULg

Conference (2010, September 23)

Par l’analyse d’un ensemble de textes rédigés aussi bien par des anglophones que des francophones d’Amérique du Nord dans la seconde moitié du 20e siècle, nous nous proposons d’envisager les conceptions ... [more ▼]

Par l’analyse d’un ensemble de textes rédigés aussi bien par des anglophones que des francophones d’Amérique du Nord dans la seconde moitié du 20e siècle, nous nous proposons d’envisager les conceptions présidant à la rédaction de l’histoire de la langue. Par le biais de l’étude de la dénomination des variétés de langue (qu’il s’agisse des variétés vernaculaires ou de la variété prise comme étalon de référence), nous mettons au jour les idéologies et représentations linguistiques bien vivantes qui transparaissent derrières des catégorisations souvent considérées comme consensuelles. La mise en rapport des choix terminologiques et des hypothèses historiographiques défendues (encore très diversifiées) semble montrer comment les idéologies orientent la description historique. Ce n’est pas seulement dans les thèmes développés qu’elles se reflètent, mais aussi dans les événements ou polémiques passés sous silence. Dans des contextes comme l’Acadie et la Louisiane, où le français est minoritaire, la place de la langue dans l’affirmation identitaire est prépondérante. Au même titre que l’histoire, la religion et la culture, elle fait l’objet de représentations qui ont pu se marquer dans tous les types de discours. Cependant, il peut paraître paradoxal, dans ces deux ensembles francophones hétérogènes, que l’histoire de la langue soit aussi parcellaire et toujours subordonnée à d’autres problématiques et préoccupations. Il s’agira, lors de cette présentation, d’esquisser des réflexions sur les conséquences de ce traitement historiographique conditionné de la langue ainsi que sur les conditions sociohistoriques et sociolinguistiques qui peuvent expliquer une telle situation. [less ▲]

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See detailEpitaxial Si, SiGe and Ge for high-performance devices
Loo, Roger; Hikavyy, Andriy; Vincent, Benjamin et al

Conference (2010, September 23)

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See detailWho Are Ready to Vote at 16? New Perspectives in the Study of Political Reasoning
Fournier, Bernard ULg

Conference (2010, September 23)

The question of lowering the voting age to 16 has long been debated in university circles. In the last Austrian elections, young people aged 16 and older were invited to vote, even if young people ... [more ▼]

The question of lowering the voting age to 16 has long been debated in university circles. In the last Austrian elections, young people aged 16 and older were invited to vote, even if young people themselves are divided over this issue, even hostile to the idea. Nevertheless, isn’t such a question, which is rarely discussed by the larger public and touches on several dimensions of a person’s life, an ideal topic for a debate, where the confrontation of ideas may change opinions and reveal – or even modify – young people’s global attitudes towards political interest and participation? A non-random sample of nearly two hundred 16- to 22-year-old youth in French-speaking Belgium was selected to discuss the possibility of lowering the voting age to 16, as well as political interest and political participation, during one day with four experts. The same questionnaire was filled in in the beginning and at the end of the day to measure the changes in opinion. But those changes are not the most interesting ones in this research. When we analysed the discussions of the young people during the focus groups, it was possible to bring out real patterns of political reasoning in the discourses. The first results presented here open interesting research paths, particularly for the study of political socialization. [less ▲]

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See detailL’âge de la retraite affecte-t-il le fonctionnement cognitif de la personne âgée?
Adam, Stéphane ULg; Bonsang, Eric; Perelman, Sergio ULg

Conference (2010, September 23)

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See detailInvestigating the intraspecific biodiversity of the threatened rodent Leopoldamys neilli in Southeast Asia
Latinne, Alice ULg; Waengsothorn, Surachit; Herbreteau, Vincent et al

Conference (2010, September 23)

We study the phylogeography of Leopoldamys neilli, a threatened murine rodent species endemic to limestone karsts of Thailand, in order to assess the influence of its endemicity to karstic habitat on its ... [more ▼]

We study the phylogeography of Leopoldamys neilli, a threatened murine rodent species endemic to limestone karsts of Thailand, in order to assess the influence of its endemicity to karstic habitat on its intraspecific biodiversity and phylogeographic pattern. Samples of L. neilli were collected in limestone karsts from 20 localities in seven provinces of Thailand. Two mitochondrial markers, the cytochrome b gene (cytb) and the cytochrome c oxydase subunit I gene (COI), were sequenced for 115 L. neilli individuals. A nuclear fragment, the β-fibrinogen intron 7 (bfibr), was amplified in a subset of 65 samples. Phylogenetic reconstructions and median joining networks were used to explore relationships between haplotypes of the studied populations. Haplotype and nucleotide diversities of the main lineages were estimated for each locus. Divergence times of the main lineages of L. neilli were estimated using Bayesian inference. The demographic histories of the main lineages of L.neilli were also examined. Our study gave evidence of a strong geographic structure of the genetic diversity for L. neilli. Six highly differentiated genetic lineages were observed in the phylogenetic and phylogeographic analyses. These lineages are allopatric and correspond to particular regions of Thailand. They exhibit very high degree of genetic divergence and gene flows between them are extremely low. Within each lineage, the levels of haplotype and nucleotide diversities are very low for each gene. These results suggest a severe fragmentation of L. neilli’s populations, correlated to the fragmented distribution of its habitat and highlight its high endemicity to limestone karsts. The strong phylogeographic pattern of L. neilli and the very ancient separation of some lineages could be explained by the geological history of Thailand during Tertiary and Quaternary era. In conclusion, this study revealed an unexpectedly high level of intraspecific biodiversity within the species L. neilli. These results consolidate the importance to strengthen the protection of limestone habitats and to preserve not only their huge interspecific but also intraspecific biodiversity. [less ▲]

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See detailImpact of the Asian ladybeetles’ invasions on agro-ecosystems (Belgium)
Vandereycken, Axel ULg; Durieux, Delphine ULg; Joie, Emilie ULg et al

Conference (2010, September 23)

Detailed reference viewed: 18 (7 ULg)
See detailImplants dans le secteur esthétique: choix du timing et de la technique chirurgicale.
LAMBERT, France ULg

Conference (2010, September 22)

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See detailPoor management in small firms : three typical failure patterns
Crutzen, Nathalie ULg

Conference (2010, September 22)

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See detailWALPHY : un projet pilote de réhabilitation de cours d’eau
Verniers, Gisèle; Peeters, Alexandre ULg; Hallot, Eric ULg et al

Conference (2010, September 20)

Grâce au co-financement de l’Union européenne dans le cadre de la ligne budgétaire LIFE Environnement, un projet pilote sur la restauration physique des cours d’eau a démarré en janvier 2009 pour une ... [more ▼]

Grâce au co-financement de l’Union européenne dans le cadre de la ligne budgétaire LIFE Environnement, un projet pilote sur la restauration physique des cours d’eau a démarré en janvier 2009 pour une durée de 5 ans. Son nom : WALPHY pour « Wallonie – physique ». Le projet est coordonné par la Direction des Cours d’Eau Non Navigables DCENN (Service Public de Wallonie SPW - Belgique) dont le district de Namur assure la réalisation des travaux de restauration. Deux partenaires scientifiques assument l’évaluation et le suivi de ces travaux : le Laboratoire d’Hydrographie et de Géomorphologie Fluviatile de l’Université de Liège et l’Unité de Recherche en Biologie des Organismes des Facultés Universitaires de Namur. [less ▲]

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See detailParticle packing of concrete containing blended cement
He, Huan ULg; Courard, Luc ULg; Pirard, Eric ULg

Conference (2010, September 20)

Physical particle packing is becoming a hot topic in concrete technology as more and more types of granular materials are used in concrete either for ecological or for engineering purposes. Aggregate is ... [more ▼]

Physical particle packing is becoming a hot topic in concrete technology as more and more types of granular materials are used in concrete either for ecological or for engineering purposes. Aggregate is used as concrete’s skeleton, whereby the particles are stabilized by the cementitious matrix. Packing efficiency governs the spatial characteristics of this structure and thereby influences concrete’s properties. Fine-grained sand can be used to further improve density of the aggregate structure. The particulate cement is also frequently blended by fine mineral admixtures to influence performance of the paste and the properties of the matured concrete. The so-called filler effects increase packing density of the blended cement and possibly reduce water demand. High performance characteristics require suitable blending materials of proper properties (fineness, shape, chemical components, etc.). A number of theoretical packing models have been proposed for prediction of packing characteristics and the resulting concrete properties. A minimum voids ratio has been mathematically derived for certain particle size distributions. This allowed establishment of some optimum graded mixtures for concrete production. On the other hand, the computer simulation approach provides a powerful tool for simulating particle packing. Computational concrete (compucrete) has been developed for a wide range of research purposes. Application of computer simulation to particle packing offers a promising perspective in concrete technology; it provides a proper representation of the heterogeneous concrete material, and renders the possibility of studying the effects of a wide range of technological parameters. In this study, an advanced DEM will be utilized for investigate the packing properties of admixtures blended cement. This new-developed system is capable of packing simulations of arbitrary-shaped particles. Experimental shape analysis of each identical group of particles provides fundamental references of shape simulation strategy. Finally, computer simulation structures of blended cement paste both in fresh and hardened states will be compared with the experimental approach. Correlation of particle packing characteristics and properties of blended cement paste will be analyzed and discussed. Optimization of blending efficiency and improvement of concrete properties are pursued using packing modeling. [less ▲]

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See detailComparaison de deux modes de préparation des médicaments dans une MRS en Communauté germanophone : impact quantitatif et qualitatif sur la pharmacothérapie
Van Hees, Thierry ULg; Schroeder, Béatrice ULg

Conference (2010, September 18)

1) Introduction La préparation de semainiers pour les patients des maisons de repos et de soins (MRS) par le pharmacien d’officine permet de diminuer les erreurs liées à l’administration des médicaments ... [more ▼]

1) Introduction La préparation de semainiers pour les patients des maisons de repos et de soins (MRS) par le pharmacien d’officine permet de diminuer les erreurs liées à l’administration des médicaments. Outre ce bénéfice, l’accès pour le pharmacien à l’ensemble du traitement devrait faciliter la validation pharmaceutique des prescriptions et le développement de soins pharmaceutiques de qualité pour les patients résidant en communauté. 2) Contexte de l’étude La MRS étudiée est une institution publique de la Communauté Germanophone où résident 143 patients répartis dans 6 services différents. Le système de gestion des médicaments est en phase de transition. Pour 3 salles, la préparation et la distribution des médicaments sont assurées par les infirmières de salle (=groupe contrôle). Pour les 3 autres salles, le pharmacien d’officine prépare des semainiers pour les formes orales solides, la préparation des autres formes pharmaceutiques et la distribution des médicaments étant assurées par les infirmières (=groupe intervention). 3) Objectifs Le but de l’étude est de comparer ces deux modes de préparation des médicaments en termes quantitatifs (nombre de médicaments et nombre de prises) et qualitatifs (médicaments inappropriés et interactions). 4) Méthode En octobre 2009, les traitements de tous les patients de l’institution ont été enregistrés sur base des plans d’administration de la MRS. Les médicaments inappropriés ont été évalués sur base d’une adaptation française de la liste de Beers. Les interactions médicamenteuses a été analysées à l’aide du logiciel Micromedex® sur un échantillon de 20 patients par groupe, stratifié selon le nombre de médicaments. 5) Résultats 143 patients ont été enrôlés dans l’étude (67 pour le groupe contrôle et 76 pour le groupe intervention). L’âge moyen (82,4±8,3) est semblable entre les groupes, contrairement à la répartition homme/femme, la durée de séjour et le score de Katz. Le nombre de médicaments/patient (7,9±4,4 vs 8,7±3,7 ; p=0,23), le nombre de prises/patient (10,8±6,9 vs 11,8±5,5 ; p=0,36) et le nombre de médicaments inappropriés/patient (1,0±0,9 vs 1,0±0,9 ; p=0,73) ne sont pas différents entre les deux groupes, même après ajustement pour le sexe, la durée de séjour et le score de Katz. Le nombre d’interactions majeures/patient (0,8±1,3 vs 0,9±1,5 ; p=0,73) est similaire dans les deux groupes. 6) Conclusion En résumé, la préparation de semainiers par le pharmacien d’officine n’entraine pas de différence statistiquement significative du point de vue quantitatif et qualitatif sur la pharmacothérapie des patients en MRS. [less ▲]

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See detailOrdre social et désordres psychiques : Le regard de Zola sur le Second Empire
Ledent, David ULg

Conference (2010, September 18)

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See detailLa vitamine D: le point en 2010.
Cavalier, Etienne ULg

Conference (2010, September 17)

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See detailL'intercommunale, entité hybride aux frontières du droit public et du droit privé
Durviaux, Ann-Lawrence ULg

Conference (2010, September 17)

Exposé du régime juridique des intercommunales en Région wallonne

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See detailImpact of grazing by amphipods on the dynamics of the epiphytic cover of the Posidonia oceanica leaves : an in vitro experiment.
Michel, Loïc ULg; Gobert, Sylvie ULg; Dauby, Patrick ULg et al

Conference (2010, September 17)

It is now established that several species of amphipods associated to Mediterranean Posidonia oceanica meadows consume the epiphytes present on the leaves of the seagrass. However, little or no work has ... [more ▼]

It is now established that several species of amphipods associated to Mediterranean Posidonia oceanica meadows consume the epiphytes present on the leaves of the seagrass. However, little or no work has been undertaken to quantify this interaction. Here, we present the results of an in vitro experiment that used seagrass mimics to estimate the impact of grazing by the amphipods Apherusa chiereghinii, Dexamine spiniventris and Gammarus spp on the dynamics of the epiphytic cover. All species reduced epiphyte biomass in a significant way, and grazers preferentially fed on erected algae. Assimilation of epiphyte-derived carbon and nitrogen was monitored using stable isotopes (13C and 15N) labelling, and was obvious in the three taxa. Moreover, grazing activity of amphipods seemed to influence epiphyte physiology, notably by increasing nitrogen uptake by the erected algae. These results shed light on trophic interactions between the amphipods from Posidonia oceanica meadows and the seagrass epiphytic cover, and thus enhance our understanding of the role of these grazers in the functioning of the meadow as an ecosystem. [less ▲]

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See detailEmergence of coagulase negative staphylococci in Southern Belgium - Facts and Figures
Theron, Léonard ULg; Bughin, Jean; Detilleux, Johann ULg et al

Conference (2010, September 16)

Since the early 1990s in Wallonia, coagulase negative staphylococci (CNS) have been identified as mastitis agent, both clinical and subclinical. As there epidemiological cluster has not yet been clearly ... [more ▼]

Since the early 1990s in Wallonia, coagulase negative staphylococci (CNS) have been identified as mastitis agent, both clinical and subclinical. As there epidemiological cluster has not yet been clearly classified between environmental and contagious pathogen, several questions subsists toward this class of mastitis etiological agents. From the late 1990s were the CNS represented 12% of infected quarters to 23% of all positive identifications in 2008, the CNS have taken a large part of the clinical cases of mastitis. Comparatively, CNS in Flanders represents only 7% of clinical cases identifications and 24% of subclinical cases. They still represent low inflammation pathogens, as for the average somatic cell count (SCC) of a CNS infection is 450.000 cells/ml (DETILLEUX, J. 1999. Preventive Veterinary Medicine, 41, 75-88.) but they represent for sure a source of treatment events in farm as for they provoke clinical mastitis. So, however they are seen as minor pathogens of a lesser matter regarding milk production drop, they still can imply a treatment a loss of discarded milk. Whether or not they should be treated could be approached through the Mammipack® project results. 124 common clinical mastitis events where sampled for bacteriology at day 0 and day 21 (Fig. 1). Farmer were asked to qualify the severity of the mastitis whether it had abnormal milk (score 1); abnormal quarter (score 2) or hyperthermia/anorexia (score 3). Also, they recorded the treatment used and we collected the SCC of each cow recorded, 2 months before the clinical signs until 3 months after. We decided to define as “chronic cases” cows showing SCC > 250.000 cells/ml the month before the clinical event and as “cured” cows showing SCC < 250.000 cells/ml the month after the event or the next one if the mastitis took place less than 15 days before test day. We could show that CNS infections still account for the least severe cases (Fig. 2), except for S. simulans, S. saprophyticus and S. hominis that shown some quarter indurations. While only 10% of clinical infection does remain clinically uncured to the farmer, figure 3 explains how 50% of CNS infections in our essay remained globally cured (Bacteriological and tissular), even if 40% of their treatments shown to be inadequate. Also, only one infection could be referred as a chronic case, all the others were acute cases. Though this study recorded a small amount of cases, yet we did not find any results differing from known characteristics of CNS infections. One interesting facts is the quite easy cure of the infected quarters given the poor quality of treatment. [less ▲]

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See detailMacromolecular engineering to the service of advanced drug delivery systems
Jérôme, Christine ULg

Conference (2010, September 16)

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See detailTransnational Relations and Family Transformations. Congo-Kinshasa--Liège/Bruxelles--Kinshasa
Meiers, Bénédicte ULg

Conference (2010, September 14)

premier état des lieux des formes sociales que prennent les liens entre les migrants rencontrés à Liège et leurs familles à Kinshasa. Indépendamment des familles transnationalisées dont les configurations ... [more ▼]

premier état des lieux des formes sociales que prennent les liens entre les migrants rencontrés à Liège et leurs familles à Kinshasa. Indépendamment des familles transnationalisées dont les configurations varient d’un individu à l’autre, deux grandes formes de « néo-parenté » (parentalisation primant parfois sur la parenté généalogique) semblent se dégager : le quartier-famille (bana quartier) et la famille spirituelle (mouvement religieux). [less ▲]

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See detailCaught on the Boundary: The Micro-Processes of Social Movement-Corporate Relationships
Huybrechts, Benjamin ULg; Nicholls, Alex

Conference (2010, September 13)

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See detailSocietal vulnerability and adolescent offending. Exploring the role of violent values, low self-control and troublesome youth group involvement
Vettenburg, Nicole; Pauwels, lieven; Brondeel, Ruben et al

Conference (2010, September 11)

the direct/indirect explanation power of societal vulnerability > juvenile delinquency is discussed

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See detailProspective study of hemodynamic disorders mesured by echocardiography and associated with endotoxemia in horses
Borde, Laura ULg; Amory, Hélène ULg; Leroux, Aurélia ULg et al

Conference (2010, September 11)

Endotoxemia is the first mortality cause in intensive care horses. In human, hemodynamic disturbances have been showed to be associated with septic shock whereas in horses, this facet of endotoxemia has ... [more ▼]

Endotoxemia is the first mortality cause in intensive care horses. In human, hemodynamic disturbances have been showed to be associated with septic shock whereas in horses, this facet of endotoxemia has not yet been studied. The aim of the study was to assess the impact of endotoxin shock on equine cardiac function. Fifty horses admitted in clinic with signs of endotoxic shock and 17 healthy control horses were submitted to a doppler echocardiographic exam. The endotoxemic horses were classified in 4 groups according to their shock score based on clinical evaluation (heart rate (HR) and respiratory rate), non invasive systolic blood pressure, and blood tests (Packed cell volume and lactates). Score 1, 2, 3 and 4 groups included 11, 17, 12 and 10 horses, respectively. Left ventricular (LV) echocardiographic and Doppler parameters were compared between the 5 groups using a multivariable ANOVA analysis. The LV internal diameter, ejection time, ejection time corrected for HR and mean velocity of circumferential fiber shortening corrected for HR, the aortic velocity time integral and deceleration time, and the stroke volume were significantly lower, whereas the HR and the peak velocity of the late diastolic filling of the mitral Doppler flow and its velocity time integral were significantly higher in grade 2 to 4 endotoxemic horses than in control horses. Because of the tachycardia compensating the lower stroke volume in endotoxemic horses, the cardiac output was not significantly different between groups. Despite the fact that the increase in HR, the fall in preload and a probable decrease in afterload doubtless played a role in the observed changes, the results of this study suggest an impaired systolic and diastolic LV function in horses with moderate to severe endotoxemia. Doppler echocardiographic monitoring of the cardiovascular function could thus be of interest in equine intensive care. [less ▲]

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See detailVandalism among adolescents - a comparison of european countries
Gavray, Claire ULg; Vettenburg, Nicole

Conference (2010, September 10)

ISRD results show it' s important not to banalize vandalism. They also show that different factors lead girls and boys to adopt this behaviour. It's significantly due to gendered socialization.

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See detailFootball and community problems in Belgium
Fincoeur, Bertrand ULg

Conference (2010, September 10)

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See detailSerial offenders' spatial behaviour: revisiting the marauder/commuter dichotomy
Trotta, Marie ULg

Conference (2010, September 10)

Geographic profiling is a methodology that uses the location of a series of crimes attributed to the same offender in order to determine the residence of this latter. This recent discipline links the ... [more ▼]

Geographic profiling is a methodology that uses the location of a series of crimes attributed to the same offender in order to determine the residence of this latter. This recent discipline links the theories of environmental criminology, such as the routine activity theory, with the techniques of spatial analysis offered by the Geographic Information Systems such as centrographic statistics and distance decay functions. The literature differentiates two categories of serial offenders according to their mobility: the marauder committing his crimes in the nearby area of his home and the commuter travelling outside his daily activities area. Until now, geographic profiling methodologies have proven to be effective only for the marauder behaviours. Before applying these spatial techniques, it is therefore essential to know what kind of offenders we are facing. However, few studies have tried to determine how these two behaviours could be identified on the basis of crime scene information and suspect’s characteristics. Moreover, spatiotemporal aspects have very often been underexploited. After an introduction to geographic profiling, we present the existing typologies of offender spatial behaviours, among which the commuter/ marauder dichotomy. We set out the crucial information identified in the literature aiming at their differentiation and their implication on the method used to reduce the search area. We draw a conclusion that some spatial inconsistencies persist, requiring to revisit the typologies according to multiple spatiotemporal patterns. Particularly we demonstrate how these typologies can be enhanced by taking into account the relation between the moment of the crime and the location of the crime site. Finally, we show that these new patterns can improve the analysis of commuters thanks to techniques based on spatiotemporal constraints. [less ▲]

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See detailTowards international criminology and victimology
Pierre, Alexia ULg

Conference (2010, September 10)

Classical criminology was mostly developed in the field of local penal law. Thus, protective and repressive measures taking part in these judicial systems are often limited to local aims. In this ... [more ▼]

Classical criminology was mostly developed in the field of local penal law. Thus, protective and repressive measures taking part in these judicial systems are often limited to local aims. In this criminology, the State is protective, the care for victims is institutionalized. Moreover, the relation between criminology and penal qualification of the act against the victim as a crime is essential to access the status of victim. This entails an epistemological presupposition in victimology, science considered as a specialized field of criminology. Indeed, this presupposition makes the victim of serious violations of penal Law the prototype of victims of serious offenses. Furthermore, crime is not only a matter of individuals but also of structural possibilities, as is the case in criminal organizations. In the subject matter of organized criminality, the sides taking in concern in classical criminology are mostly related to economical delinquency. State or governmental army criminality is rarely explored by researchers. Previously, these topics seemed to be unreachable, but the nature of the recent armed conflicts, and the present evolution of International penal Law, entailed to the visibility of massive atrocities during wars. Today, criminology must face new fields of involvement, larger than these investigated in classical criminology. Presently, an international criminology is emerging, which is different and liberated from classical criminology. In this international criminology, a special kind of criminality is studied, due to its massiveness, its extent and is systematic nature. In addition, a strong war victimology is emerging as well, victimology tends thus to be an autonomous discipline. The challenge is now to turn crisis criminology and victimology into a strong scientific discipline. [less ▲]

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See detailOpening the black box : agencies as socio-technical networks
Fallon, Catherine ULg; Thoreau, François ULg; Joris, Geoffrey ULg

Conference (2010, September 09)

Agencies have historically developed in Belgium, endorsing public activities not only at the federal level, but also at the level of decentralised governments (regions and communities). The current ... [more ▼]

Agencies have historically developed in Belgium, endorsing public activities not only at the federal level, but also at the level of decentralised governments (regions and communities). The current landscape in the Southern part of the county is more and more taking the form of a mosaic with very little efforts in terms of cooperation : this is particularly true when the agencies addressing similar target groups in a given sector are responding to different levels of governments with very little interaction, the coordination being organised by the users' themselves, according to their own strategies. At the same time, some agencies are taking more of a centre stage position : they not only provide services and support to their target group, they also fruitfully contribute to their status and identity building. Using a cultural approach may help study the "art of the state" in its diversity (Hood, 1998). We propose to concentrate the analysis on the emergence of two Agencies whose mission is to support professionals working in the public sector. Based on a recent field work on the transformation of the sector of public research, we will analyse how the FNRS (an agency funding public research) succeeded to survive as an independent agency through since 1928 (Halleux & Xhayet, 2008), adapting to the transforming socio-political context: it emerged as an industry based project and transformed into a "mertonian" institution of knowledge contributing to unify the scientific community at the level of the country, while bypassing the historical divisions of the three worlds of universities in the country (Fallon, 2009). A diachronic analysis helps underline how socially constructed is such an institution, and how the configuration of networks are continuously reshaping themselves to better be embedded in a specific historic society (Laborier, 2003). The FNRS is currently struggling to define new forms of cooperation with the universities (and their researchers) which are themselves embarked in the current stream of transformations introducing techniques derived from New Public Management in research organisations (de Boer, Enders, Schimank, 2007). In quite a different sector, another field work using the same methodological approach analysed the emergence of a very recent agency, EASI-WAL, serving the regional administration in order to encourage administrative simplicity (OCDE, 2003, 2005) and reported the shortcomings of this organisation in organising avenues for professional change with the civil servants (Thoreau, Fallon, Joris,2009). The two field work research were organised as case study analysis, with document analysis, face to face interviews and in situ observation, using research tools derived from the sociology of science (Actor-Network Theory in Callon,1986). The paper will present the outcomes of the analysis of the dynamics of the cooperation between the agency and its target groups (FNRS & researchers; EASI-WAL & civil servants) and their outcomes in terms of innovation and organisational learning. We observe the implementation of two institutions both designed to support the emergence of some common goal within their target collectives (elitist -research; administrative simplicity): they autonomously gave shape to their internal procedures of categorisation and hierarchisation, with identification processes contributing to the definition of institutional boundaries defining a specific field while ensuring its inscription in the network through a specific legitimating strategy (Douglas, 1986). This analysis will unveil some of the mechanisms of cooperation of the different stakeholders supporting the institution, and also the struggle between stakeholders for the definition of settings of participation and administrative and political control. [less ▲]

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See detailHeroin-Assisted Treatment as a treatment of criminal behaviour?
Demaret, Isabelle ULg; Litran, Géraldine; ANSSEAU, Marc ULg et al

Conference (2010, September 08)

Background: TADAM, a randomised controlled trial of heroin-assisted treatment, will begin in Liège, Belgium, in 2010. This trial will compare two groups of patients: one in a heroin-assisted treatment and ... [more ▼]

Background: TADAM, a randomised controlled trial of heroin-assisted treatment, will begin in Liège, Belgium, in 2010. This trial will compare two groups of patients: one in a heroin-assisted treatment and the other in oral methadone treatment. In this new medical treatment, the criminal behaviour of the patients will also be assessed. It is one of the three efficacy criteria. Why? Methodology: We based our presentation on papers published on heroin-assisted treatment concerning changes in criminal behaviour. Results: Heroin-assisted treatment of treatment resistant heroin addicts has been successfully tested in six countries: Switzerland, The Netherlands, Spain, Germany, Canada and United-Kingdom. Each country has also assessed the criminal behaviour before and after the treatment with better results for heroin-assisted treatment than for methadone treatment. Conclusion: HAT seems a good way to treat criminal behaviour of a group: severely heroin addicts who already tried other treatments. [less ▲]

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See detailEffets respiratoires de l'anesthésie locorégionale
Brichant, Jean-François ULg

Conference (2010, September 07)

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See detailMigration and climate change: an escape from environmental determinism
Gemenne, François ULg

Conference (2010, September 04)

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See detailMultiple sources in the copularization of become
Petré, Peter ULg

Conference (2010, September 04)

Multiple sources in the copularization of become This paper shows how general productivity (see Barðdal 2009: 38) of the copular function of the verb become abruptly followed when a pre-copular stage had ... [more ▼]

Multiple sources in the copularization of become This paper shows how general productivity (see Barðdal 2009: 38) of the copular function of the verb become abruptly followed when a pre-copular stage had reached a threshold value about 1150, prior to which become only occurred with a spatial sense ‘arrive’, and with extensions of this sense. It is argued that this abrupt switch to general productivity rather than a gradual increase in productivity results from the fact that copular become is not the end result of a single diachronic lineage of constructions (i.e. a simple grammaticalization process, see Croft 2000: 32-37), but instead resulted from an interaction between lineages, as well as external influence, and from the coming together of all factors involved in the twelfth century. First, certain constructions in which become occurred gradually changed and interacted with each other. In a first stage, two constructions developed (through metaphor) out of become ‘arrive’. These are the constructions in (1), with a human subject and become meaning ‘attain’, and in (2), with an inanimate subject, a dative experiencer and become meaning ‘come upon’. (1) Heo becom to soþum wisdome. ‘She attained to true wisdom.’ (2) Seo þearlwisnis þæs heardan lifes him becwom. ‘The austerity of life came upon him.’ In a second stage a two-participant resultative construction, as in (3), developed as a syntactic blend of (1) and (2) (cf. De Smet 2009: 1747), which provided a formal template for a one-participant prepositional copular construction as in (4). (3) Andetnysse him becumeð to hæle ‘Confession results (for him) in salvation’ (4) Þii fader bi-com to one childe ‘Your father turned into a child.’ Another, unrelated construction provided a formal template for the adjectival copular construction. This is the depictive construction given in (5), in which an adjective serves as a secondary predicate, but become does not have a linking function (is not a copula). (5) He gesund becom to Æðelingege. ‘He arrived (and was) safe at Æðelinge.’ Second, the already existing copula weorðan ‘become’ (see Petré & Cuyckens 2009) provided a template of general productivity upon which the resultative construction could graft once it had become semantically sufficiently similar to a copular construction, and, once the copular stage was reached, the depictive construction also started to serve as a formal input for this analogical process, with as a result adjectival and nominal copular constructions. Finally, Old French probably also contributed (though only as a strengthening factor) to the success of copular become in precisely the twelfth century. From a balanced explanation taking into account all of these factors it is concluded that the sudden emergence of copular becuman is not as catastrophic as it at first seemed. References Barðdal, Jóhanna. 2009. Productivity: Evidence from case and argument structure in Icelandic (Constructional Approaches to Language 8). Amsterdam: John Benjamins. Croft, William. 2000. Explaining language change: an evolutionary approach. London: Longman. De Smet, Hendrik. 2009. Analysing reanalysis. Lingua 119: 1728-1755. Petré, Peter & Hubert Cuyckens. 2009. Constructional change in Old and Middle English Copular Constructions and its impact on the lexicon. Folia Lingistuica Historia 30: 311-365. [less ▲]

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See detailAdaptative struggle in "institutions of knowledge" : constructing internal orders in the chaos of social transformation
Fallon, Catherine ULg

Conference (2010, September 04)

Since the 19th century, universities are the locus of most public research in Belgium, with a ongoing interaction with industry. After WWI, a group of industrialists succeeded launching a privately ... [more ▼]

Since the 19th century, universities are the locus of most public research in Belgium, with a ongoing interaction with industry. After WWI, a group of industrialists succeeded launching a privately financed "Research Council", the FNRS (Fondation Nationale de la Recherche Scientifique) with the support of the highest political authority, King Albert 1st. Historians (Halleux & Xhayet, 2008) documented how this specific institution emerged, from an industry based project towards a "mertonian" institution of knowledge contributing to unify the scientific community at the level of the country, while bypassing the historical divisions of the three worlds of universities (state; catholic; free). Based on a recent field work on the transformation of the instruments of science policy in Belgium, this paper proposes to analyse in some depth the dynamics of transformation of the FNRS at its emergence as well as the transformations this institution had to go through in order to survive till now : under the same acronym, the institution had to transform itself in order to adapt to social change and pressure for transformation. The main steps were to maintain its independence while being funded by the state (after WWII); to reinforce its identity in competition against emerging strategic science policy instruments; to stand the pressure to democratisation which opposed its elitist model in the organisation of research; to survive the decentralisation process which affected all political structures in the country after 1968 onwards. This analysis will unveil some of the mechanisms of adjustment which it had to mobilise in order to survive, and particularly the practicalities of the forms of cooperation of the different stakeholders supporting the institution through 80 years of existence: the researchers themselves as members of the "community" this institution is serving; the authorities of the three main universities whose positions have continuously grown; industry partners and political authorities. We propose to prolong this analyse by a comparison with the processes of emergence of the ERC (European Research Council), an institution also devoted to the identity construction of a specific scientific community ( but a community without a real "polity") and also struggling with stakeholders for the definition of settings of community participation and administrative and political control. At 80 years of distance, we observe the emergence of two institutions similarly designed to support the emergence of a "scientific collective" : they design autonomously their internal procedures of categorisation and hierarchisation, with identification processes contributing to the definition of institutional boundaries defining a specific field while ensuring its inscription in the society through a specific legitimating strategy (Douglas, 1986). A diachronic analysis helps underline how socially constructed are these institutions, and how the configuration of networks are continuously redesigned to better be embedded in a specific historic society (Laborier, 2003). [less ▲]

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See detailBiometallurgy for a greener E-wastes recycling
Lewis, Grégory ULg

Conference (2010, September 03)

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See detailMonitoring endocrine profiles for prediction of stillbirth in Holstein-Friesian dairy cattle
Szenci, O.; Bajcsy, A. C.; Brydl, E. et al

Conference (2010, September 03)

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See detailVingt ans de recherche sur les jeunes : un bilan
Fournier, Bernard ULg

Conference (2010, September 02)

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See detailL'importance de ne pas être aveugle à la dimension de genre dans l'étude de la participation sociale, civique et politique des jeunes
Gavray, Claire ULg; Born; Waxweiler, Charline ULg

Conference (2010, September 02)

le traitement des données de l'European Social Survey' montre l'intérêt de prendre en compte la question de la socialisation genrée dans l'analyse de l'engagement politique et civique des jeunes

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See detailTotal error as natural decision criteria for analytical methods validation and transfer
Rozet, Eric ULg; Boulanger, Bruno ULg; Dewe et al

Conference (2010, September)

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See detailSédation par gamma-hydroxybutyrate et effets sur l'indice bispectral chez l'enfant.
ROUSSEAU, Anne-Françoise ULg; SABOURDIN, Nada; RICHARD, Granados et al

Conference (2010, September)

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See detailMining and Biodiversity: The Study Case of Ecosystem Reconstruction in Katanga (DRC)
Lebrun, Julie ULg; Semereab, Ezana; Rensonnet, Audrey et al

Conference (2010, September)

The Katangan copper-cobalt deposits (Democratic Republic of Congo) are part of the Central African Copperbelt, one of the world’s greatest metallogenic province. The ore comes to the surface in a series ... [more ▼]

The Katangan copper-cobalt deposits (Democratic Republic of Congo) are part of the Central African Copperbelt, one of the world’s greatest metallogenic province. The ore comes to the surface in a series of hills isolated in the miombo woodland. These unique ecosystems present high metals concentration levels where a specific vegetation develops. Flora comprises more than 600 species from which 30 are endemics. Due to the recent revival of mining activities in the region, copper plant communities of Katanga and their associated flora are now critically threatened. Tenke Fungurume Mining sarl (TFM), an important mining company operating in Katanga, has developed a Biological Diversity Action Plan (BDAP) to conserve copper-cobalt flora and mitigate potential species extinction risk. One of the most original BDAP tasks is an ecosystem reconstruction experiment that should preserve plant communities representative of the diversity found on the exploited hill and to provide the plant material for further post-exploitation restoration. From December 2007 to April 2009, full vegetation blocks were translocated with their soil mat on an adequate mineral substrate of 1500m². Since 2008, the artificial ecosystem is monitored every year. Three communities were successfully recreated. A total of 125 species were found in the ecosystem which represents half of the original species richness. Population size decreased for only 12 out of 32 surveyed species. This first experience shows that ecosystem reconstruction is successful and may be used as a strategy to conserve copper-cobalt plant communities in their habitat. [less ▲]

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See detailThe distributions of the OH (Δv=1) and (Δv=2) emissions on the Venus nightside
Soret, Lauriane ULg; Gérard, Jean-Claude ULg; Piccioni, Giuseppe et al

Conference (2010, September)

The presence of OH was detected in the spectrum of the Venus mesosphere observed at the limb with the VIRTIS instrument on board the Venus Express spacecraft [3]. The (1-0) and (2-1) transitions at 2.80 ... [more ▼]

The presence of OH was detected in the spectrum of the Venus mesosphere observed at the limb with the VIRTIS instrument on board the Venus Express spacecraft [3]. The (1-0) and (2-1) transitions at 2.80 and 2.94 mm, respectively and the (2-0) band at 1.43 mm were clearly identified. The results of this study show that a correlation is observed between the emissions associated to the Δv=1 and the Δv=2 sequences. [less ▲]

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See detailLinking design and production in computer applications for increased efficiency
Caprace, Jean-David ULg

Conference (2010, September)

Shipbuilding has been severely affected by the global economic crisis. Demand for new ships has collapsed world wide since summer 2008 causing an unprecedented levels of overcapacity in the global cargo ... [more ▼]

Shipbuilding has been severely affected by the global economic crisis. Demand for new ships has collapsed world wide since summer 2008 causing an unprecedented levels of overcapacity in the global cargo ship fleets. The current crisis gives impulses for a radical think to adopt new designs to reduce the life cycle costs and to decrease the environmental impact. Leading shipping companies recognise that low life cycle cost and low emission save costs, open quality sensitive markets and will be the key driver to profitability in the future. The speaker will present some possible techniques to improve the link between design and production in order to boost the competitiveness of worldwide shipyards. Modularizations, ease of manufacturing, standardization, virtual reality, production simulation, product life cycle management, are some of these techniques illustrated in the presentation. The speaker will also draw the trends for the future years. [less ▲]

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See detailThe 2500 yr long paleoseismological record of the Hazar Lake, East Anatolian fault, Turkey
Hubert, Aurelia ULg; Vanneste, K.; Cagatay, N et al

Conference (2010, September)

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See detailImpact of storage at 4°C on the study of sludge drying emissions
Fraikin, Laurent ULg; Herbreteau, Benjamin; Chaucherie, Xavier et al

Conference (2010, September)

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See detailValidation of musculoskeletal models: the importance of trend validations
De Zee, Mark; Lund, Morten; Schwartz, Cédric ULg et al

Conference (2010, September)

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See detailImpact of liming operating conditions on the convective drying kinetics of urban residual sludges
Royer, Sandrine; Blandin, Gaëtan; Salmon, Thierry ULg et al

Conference (2010, September)

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See detailThermo-elastic distortion measurements by holographic interferometry and correlation with finite element models for SiC connections/junctions on spacecraft
Thizy, Cédric ULg; Stockman, Yvan ULg; Eliot, Fabienne et al

Conference (2010, September)

Scientific, earth observation and telecommunication spacecrafts are submitted to severe thermal environments while their mission performance requires more and more high stable structures. Due to on-ground ... [more ▼]

Scientific, earth observation and telecommunication spacecrafts are submitted to severe thermal environments while their mission performance requires more and more high stable structures. Due to on-ground constraints, the verification by test of the performances of these stable structures is usually limited. However accurate prediction methodology and verification capability of thermal distortions becomes mandatory for ensuring the in-orbit performance objectives of future programs. The main thermo-elastic contributors of the final stability performances are: - Material and assembly physical properties knowledge (Coefficient of Thermal Expansion, Young modulus, Poisson ratio…) - Modeling and simulation capabilities: temperature mapping, accurate thermo-elastic finite element models… - Verification test performances: advanced measurement techniques are required to characterize and determine the different main contributors to the final end to end performance and to perform accurate correlation. In this study, material characteristics are assumed to be well known. The objective was to improve and develop analytical predictions and verification of thermo elastic distortions using sample testing for modeling correlation. The samples have been chosen to be representative of the connections/junctions that can be encountered in stable structures on spacecraft and can have a dominant impact on the instrument stability. The results presented in this paper concern SiC/SiC and SiC/TA6V bonded and bolted samples. For the tests, temperature variations between -20°C and +15°C from ambient have been applied to the samples. Thermo-elastic distortions have been measured with a holographic camera. This holographic camera can measure displacements in the range of 20 nm to 20 m without physical contact with the samples. The tests results have been compared to the predictions obtained by Finite Element Modelling. From this comparison modelling guidelines have been issued with the aim of improving the accuracy of computed thermo elastic distortions: the FEM predictions lead to quite good correlation with the test data, with most of the time less than 10% discrepancies. A second phase to this study is planned. The objective is to implement all the benefits on improvement of thermo-elastic distortions predictions and verification achieved during the first phase on real spacecraft hardware. [less ▲]

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See detailMigrazioni e processi insediativi la visione dello Spazio-Nazione sionista in Palestina negli anni Venti letta attraverso i progetti di Richard Kauffmann
Fisher, Axel ULg

Conference (2010, September)

Il Grande Incendio di Salonicco (1917) e la sua ricostruzione contribuirono a ridisegnare la geografia etno-confessionale lungo il nuovo confine greco-turco, ma anche alla transizione della città da ... [more ▼]

Il Grande Incendio di Salonicco (1917) e la sua ricostruzione contribuirono a ridisegnare la geografia etno-confessionale lungo il nuovo confine greco-turco, ma anche alla transizione della città da “Gerusalemme dei Balcani” a “Capitale dei profughi”. Pochi decenni prima dell’incendio che avrebbe colpito nel corpo la comunità ebraica europea – l’Olocausto – quello di Salonicco concorse ad alimentare fenomeni migratori e progetti di ricostruzione in luoghi distanti : calcando le orme dei loro correligionari centreuropei, gli ebrei di Salonicco emigrarono verso l’Europa occidentale, le Americhe. Alcuni preferirono la Palestina.Dalla fine dell’Ottocento, le persecuzioni razziali in Europa – spesso accompagnate dall’incendio dei luoghi di culto – avevano provocato regolari ondate migratorie verso questa remota provincia dell’Impero ottomano, ora sotto Mandato britannico. A ciascuna di queste ondate corrispondevano altrettante campagne insediative accomunate dallo sforzo di diverse generazioni di agronomi, architetti e urbanisti nella definizione dei caratteri e delle forme del villaggio agricolo ebraico ; « topos » prioritario nella ricostruzione delle nuove identità individuali e collettive ebraiche.Nei primi anni Venti, il riassetto geopolitico del Mediterraneo orientale rappresenta l’occasione per l’Organizzazione sionista di guidare il « ritorno degli ebrei alla loro terra d’origine » e all’agricoltura. Nella Valle di Jesreel si mette in atto un ambizioso progetto di ricostruzione e diradicamento, fisico e culturale a un tempo : un giovane architetto e urbanista di origini tedesche – Richard Kauffmann (1887-1958) – progetta numerosi villaggi agricoli, una piccola agro-città (Afula) e lo sviluppo della Baia di Haifa. La sequenza di questi progetti prefigura un precoce esperimento di pianificazione regionale pre-statale dal quale emerge la prima espressione compiuta di un’idea dello Spazio-Nazione sionista : un sistema insediativo lineare fondato sull’agricoltura, gerarchicamente organizzato e funzionalmente integrato, in cui è possibile apprezzare il grado di necessità del progetto di architettura nel quadro di una strategia di ampio respiro che stabilisce rapporti originali con la natura, la storia e l’« impianto geografico » a scala nazionale. [less ▲]

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See detailNEW INSIGHTS INTO THE Early EVOLUTION OF LiFe: EVIDENCE FROM THE pilbara craton
Sugitani, Ken; Grey, Kath; Van Kranendonk, Martin et al

Conference (2010, September)

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See detailJupiter's ultraviolet polar emission: a statistical study
Coumans, Valérie ULg; Bonfond, Bertrand ULg; Grodent, Denis ULg et al

Conference (2010, September)

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See detailE-voting: Eid Card in action
Parotte, Céline ULg

Conference (2010, September)

Presentation included in the track number 4 of EASST conference: What objects do: design, consumption and social practices.

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See detailTraitement des unités morphémiques lors de la reconnaissance des mots écrits chez les jeunes lecteurs
Quemart, Pauline ULg; Casalis, Séverine; Colé, Pascale

Conference (2010, September)

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See detailEtude des processus d’adaptation aux nouvelles technologies par l’analyse des communications : le cas de la chirurgie robotique
Blavier, Adelaïde ULg; Nyssen, Anne-Sophie ULg

Conference (2010, September)

Ce papier propose d’étudier les processus d’adaptation lors de l’introduction d’une nouvelle technologie en chirurgie, par l’analyse des communications recueillies en situation réelle. Nous avons comparé ... [more ▼]

Ce papier propose d’étudier les processus d’adaptation lors de l’introduction d’une nouvelle technologie en chirurgie, par l’analyse des communications recueillies en situation réelle. Nous avons comparé les communications lors de l’utilisation de deux techniques différentes (laparoscopie classique et système robotique, étude 1) ainsi que les communications lorsque les équipes sont composées de chirurgiens experts ou novices avec la nouvelle technologie (étude 2). Nous mettons également en évidence l’existence de deux types de communications qui se distinguent selon l’expertise des acteurs: 1) les communications qui traitent de la manipulation et de l’orientation spatiale, elles disparaissent avec l’expertise et mettent en évidence un stratégie d’adaptation à court terme ; 2) les ordres et les confirmations qui restent présentes dans la pratique experte et qui témoignent d’un changement radical de structure de la tâche, induisant un mode de contrôle symbolique basé sur l’adressage verbal et augmentant le coût cognitif dans les situations de télé-opération. Centre(s) de recherche : Centre d'expertise en psychotraumatisme et psychologie légale [less ▲]

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See detailThe Venus oxygen nightglow and density distributions
Soret, Lauriane ULg; Gérard, Jean-Claude ULg; Montmessin, Franck et al

Conference (2010, September)

Observing Venus nightglow is a key tool to understand the composition and the dynamics of its atmosphere. Results deduced from observations can be implemented to produce a data model of Venus atmosphere ... [more ▼]

Observing Venus nightglow is a key tool to understand the composition and the dynamics of its atmosphere. Results deduced from observations can be implemented to produce a data model of Venus atmosphere. For instance, the Visible and Infra-Red Thermal Imaging Spectrometer (VIRTIS) instrument on board the Venus Express spacecraft is very useful to analyze the O2(a1Δ) nightglow at 1.27 µm in the Venus mesosphere. Nadir observations can be used to create a statistical map of the emission on Venus nightside. It appears that the maximum of the emission is located near the antisolar point. Limb observations also provide information on the altitude and on the shape of the emission layer. Combining nadir observations and vertically integrated limb observations improves the statistics of the emission map on Venus nightside. An associated limb profile can also be deduced for any point of the nightside. Given all these O2(a1Δ) intensity profiles, O2* density profiles can be calculated. O density profiles can also be calculated as long as CO2 density profiles are available. These can be retrieved either from the VTS3 model or from SPICAV stellar occultation measurements. Finally, three-dimensional maps of excited molecular and atomic oxygen densities can be generated. The oxygen density map shows significant differences from the VTS3 model predictions. [less ▲]

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See detailPreliminary study of effects of anaerobic digestion of manure on VFA content and Odor concentration
Ubeda, Yolanda; Nicolas, Jacques ULg; Calvet, S. et al

Conference (2010, September)

In this study, the potential reduction of odor of anaerobic digestion has been evaluated in three commercial facilities located in Belgium, Luxembourg and Germany. Odor concentrations were measured by ... [more ▼]

In this study, the potential reduction of odor of anaerobic digestion has been evaluated in three commercial facilities located in Belgium, Luxembourg and Germany. Odor concentrations were measured by olfactometric analyses in two different situations: at normal conditions and after the stirring the odor source. Parallel to these measures, representative samples were taken for digested and untreated manure and other co-substrates present in the facilities. Volatile solids, total solids, total suspended solids, volatile suspended solids, soluble chemical oxygen demand, ammonia nitrogen, total kjeldhal nitrogen, volatile fatty acids, and pH were determined in laboratory. The performance of anaerobic digestion in terms of VFA concentration reduction achieved values of 77-96%. Odor concentration was reduced by anaerobic digestion in the two studied scenarios: at normal conditions and after the stirring the odor source. No significant effect of anaerobic digestion on chemical analyses was observed, except for an increase in the ammonia nitrogen content. Significant correlations were found between the logarithm of odor concentration and different odor compounds (VFA, acetic, butyric, isobutyric, isovaleric). Correlations between odor concentration, VFA and other parameters (VS, VSS and pH) were also obtained. These results confirm that anaerobic digestion may reduce odor annoyance potential and VFA concentrations. In addition, odor concentration seems to be related with other chemical parameters, therefore more research is needed to obtain further conclusions. [less ▲]

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See detailNature des traitements morphologiques chez les dyslexiques : une étude en amorçage masqué
Quemart, Pauline ULg; Casalis, Séverine

Conference (2010, September)

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See detailOdour evaluation of a dairy farm with anaerobic digestion
Ubeda, Yolanda; Neyrinck, Roland ULg; Calvet, S. et al

Conference (2010, September)

The present work focuses on odour evaluation of a dairy farm with anaerobic digestion, located in the Luxembourg province (Belgium). This study pursues three main goals: 1.- To evaluate the effect of the ... [more ▼]

The present work focuses on odour evaluation of a dairy farm with anaerobic digestion, located in the Luxembourg province (Belgium). This study pursues three main goals: 1.- To evaluate the effect of the anaerobic digestion process on the odour level in the farm, 2.- To compare field and laboratory odour measurement techniques and 3.-To study the influence of the meteorological observation frequency on the odour plume, through the use of dispersion models. Three different approaches were used to characterize the odour: dynamic and field olfactometry and sniffing team method. Odour emissions from all sources were measured by duplicated through dynamic chamber and olfactometric analysis in two different situations: in normal conditions and after stirring the odour source. Two odour field measurement campaigns were conduced in the surroundings of the farm, and meteorological conditions were recorded two times per minute with a weather station. After comparing odour emissions with field measurements through dispersion modeling, we concluded that the best results were obtained using minimum and averaged odour emission rates. Emission rates measured in stirring conditions overestimated the reach of odour perceived in the field in three field campaigns. Overall odour emitted from the farm increased with the anaerobic digestion process. Although odour emission from digested manure is reduced in comparison with non-treated manure, the presence of agricultural wastes increases global odour emission. Finally, meteorological data were averaged each one, five and fifteen minutes. Odour shape was thinner and more extended with 15-minutes data, whereas it was larger and shorter with 30-secondes records. One minute and 5-minute values showed intermediate situations. In conclusion, different techniques to measure odours were compared in this study and, according to the results, field techniques seemed to be more realistic than dynamic olfactometry. [less ▲]

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See detailChosen, arranged or forced marriage: a case study
Duchêne, Judith ULg

Conference (2010, September)

This paper is the result of an ethnographic research conducted in the Turkish and Moroccan communities of the Hodimont neighborhood in Verviers. The analysis aims to highlight the matrimonial strategies ... [more ▼]

This paper is the result of an ethnographic research conducted in the Turkish and Moroccan communities of the Hodimont neighborhood in Verviers. The analysis aims to highlight the matrimonial strategies and the influence of the community into these ones.   A triangular interaction between parents / child / community is at the hart of each wedding’s decision. The modality of this interaction – more or less flexible – seems to be crucial in the determination of the marriage’s form and in the constraining force that can weigh on young people for the choice of their partner. Moreover, every component of young people’s life within the community is influenced by the relations with the parents and the community members. Education, socialization, religious experience, gender perceptions, economic contingencies are dimensions that are crossed by parental and community recommendations. In this context, it can be hard for young people to find a right balance between the fulfillment of the family’s wills and the respect of their own desire. This situation might cause constraints or acts of violence but it might also produce reconciliations and self‐affirmations.   [less ▲]

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See detailPrimary school in Congo: heritage, hybridity and resilience
Andre, Géraldine ULg; Poncelet, Marc ULg

Conference (2010, September)

Detailed reference viewed: 19 (0 ULg)
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See detailWhat to learn from drug-users about the drug-crime nexus?
Lemaître, André ULg; Born, Michel ULg; Witvrouw, Line ULg

Conference (2010, September)

Detailed reference viewed: 30 (11 ULg)
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See detailPrice Competition under Universal Service Obligations
Gautier, Axel ULg

Conference (2010, September)

In industries like telecom, postal services or energy provision, universal service obligations (uniform price and universal coverage) are often imposed on one market participant. Universal service ... [more ▼]

In industries like telecom, postal services or energy provision, universal service obligations (uniform price and universal coverage) are often imposed on one market participant. Universal service obligations are likely to alter firms' strategic behavior in such competitive markets. In this paper we show that, depending on the entrant's market coverage and the degree of product differentiation, the Nash equilibrium in prices involves either pure or mixed strategies. We show that the pure strategy market sharing equilibrium, as identified by Valletti et al. (2002) defines a lower bound on the level of equilibrium prices. [less ▲]

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See detailRelation entre le regard expert et la mémoire visuelle à partir de l’enregistrement du mouvement oculaire
Blavier, Adelaïde ULg; Nyssen, Anne-Sophie ULg

Conference (2010, September)

Cette communication a pour objectif d’étudier le caractère adaptatif de la mémoire visuelle ainsi que ses limites. Nous comparons les performances mnésiques de sujets experts (historiens de l’art) et ... [more ▼]

Cette communication a pour objectif d’étudier le caractère adaptatif de la mémoire visuelle ainsi que ses limites. Nous comparons les performances mnésiques de sujets experts (historiens de l’art) et novices en fonction du mouvement du regard et en fonction du type de détail (background, intérêt central versus marginal). Nos données montrent que les experts n'explorent pas une oeuvre de la même façon que les novices. Ce premier résultat montre que le regard évolue en fonction des expériences passées. Nous mettons en évidence que la performance mnésique de tous les sujets dépend principalement de l’importance conceptuelle (les détails centraux sont mieux rappelés que les autres). En outre, nous montrons que les performances des novices sont influencées par le traitement visuel qu’ils sont opéré tandis que les experts se basent principalement sur leurs représentations mentales qu’ils ont en mémoire et cela, même si elles sont erronées. Ces études montrent le caractère adaptatif de la mémoire visuelle qui ne mémorise pas toute l’information visuelle traitée mais qui en sélectionne une partie avec les erreurs qui peuvent sous-tendre ce processus de sélection. [less ▲]

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See detailThe role of fish predation in the structure of amphipod community associated with Posidonia oceanica seagrass meadows
Sturaro, Nicolas ULg; Lepoint, Gilles ULg; Panzalis, Pier et al

Conference (2010, September)

Despite the major ecological importance of Posidonia oceanica seagrass meadows in the Mediterranean Sea, little attention has been given to community structuring forces by predators in this ecosystem. To ... [more ▼]

Despite the major ecological importance of Posidonia oceanica seagrass meadows in the Mediterranean Sea, little attention has been given to community structuring forces by predators in this ecosystem. To better understand the mechanisms by which fishes affect amphipod community structure associated to P. oceanica beds, experimental manipulations of predation intensity (enclosure and exclusion cages) were set up in the Tavolara-Punta Coda Cavallo Marine Protected Area (Sardinia, NW Mediterranean). In totally protected area, where high abundance of predatory fishes is recorded, we have performed exclusion experiment. Total amphipod abundance increased at the end of the experiment, but diversity and specific composition were unaffected. At the species taxonomic level, significant increase in abundance between treatments appeared only for Caprella acanthifera. In partially protected area, where fish abundance is lower and amphipod abundance higher, individuals of the carnivorous fish Coris julis (Labridae) were enclosed in cages to provide an estimate of the potential for this species to impact on amphipod community. There was a small but measurable effect on amphipod abundance between enclosures and unmanipulated controls. A few dominant amphipod species responded to fish predation by significant decrease in abundance. These results suggest that fish predation may determine the relative abundances in the community of some amphipod species and to some degree, through an untested link with habitat complexity, determine the spatial distribution of amphipod abundance within P. oceanica beds. Moreover, patterns observed at the species level, suggest parallel complex interactions probably mainly related to ecological behaviour of amphipod species. [less ▲]

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See detailThe smell of death - a new method to detect buried remains: GCxGC-TOFMS
Dekeirsschieter, Jessica ULg; Brasseur, Catherine ULg; De Koning, Sjaak et al

Conference (2010, September)

Detailed reference viewed: 79 (26 ULg)