References of "Scientific congresses and symposiums"
     in
Bookmark and Share    
Full Text
See detailThe last 1,000 years in the Northern Congo Basin
Morin, Julie ULg; Fayolle, Adeline ULg; Favier, Charly et al

Conference (2015, November)

Review of the events that happened in the northern Congo basin during the last 1,000 yr. Positive impact of human disturbances on the regeneration of light-demanding trees. Negative impact of the European ... [more ▼]

Review of the events that happened in the northern Congo basin during the last 1,000 yr. Positive impact of human disturbances on the regeneration of light-demanding trees. Negative impact of the European colonization and following events on human populations and tree regeneration. [less ▲]

Detailed reference viewed: 20 (4 ULg)
Full Text
Peer Reviewed
See detailLa mise en scène du travail à distance: proposition d'une lecture goffmanienne
Franssen, Marine ULg; Rondeaux, Giseline ULg

Conference (2015, November)

Cette communication s’appuie sur les résultats issus d’une recherche menée dans une entreprise européenne du secteur des télécommunications, portant sur le travail à distance. Elle valorise en particulier ... [more ▼]

Cette communication s’appuie sur les résultats issus d’une recherche menée dans une entreprise européenne du secteur des télécommunications, portant sur le travail à distance. Elle valorise en particulier les apports des travaux de Goffman dans l’analyse de ce phénomène, tant sur le plan méthodologique que sur le plan de l’analyse. Dans le cadre de cette étude, l’équipe de recherche a élaboré une méthodologie d’observation multifocale, visant à cerner certains aspects du travail à distance généralement oblitérés par la littérature, essentiellement basée sur des pratiques déclaratives. Le recours à cette méthode d’observation permet ainsi de mettre en évidence des stratégies d’interaction mises en place par les acteurs à distance, choisissant de rendre visibles ou, a contrario, de maintenir cachées certaines attitudes lors d’interactions à distance. Par ailleurs, la mobilisation du concept de cadres de l’expérience, au coeur des travaux de Goffman, met également en évidence deux enjeux pour lesquels les différents cadrages d’une même situation influence la perception de dispositifs RH. Les résultats obtenus enrichissent l’appréhension des dispositifs de gestion du travail et du management à distance, en intégrant la compréhension et l’expérience qu’ont les acteurs des dispositifs ainsi que la manière dont ils se les approprient. [less ▲]

Detailed reference viewed: 43 (4 ULg)
Full Text
Peer Reviewed
See detailImproving the Installation of Offshore Wind Farms by the use of Discrete Event Simulation
Muhabie, Yohannes Tekle ULg; Caprace, Jean-David ULg; Petcu, Cristian ULg et al

in Improving the Installation of Offshore Wind Farms by the use of Discrete Event Simulation (2015, November)

The offshore wind energy development is highly affected by the condition of the weather at sea. Hence, it demands a well-organized planning of the overall process starting from the producers’ sites until ... [more ▼]

The offshore wind energy development is highly affected by the condition of the weather at sea. Hence, it demands a well-organized planning of the overall process starting from the producers’ sites until the offshore site where the turbines will finally be installed. The planning phase can be supported with the help of Discrete Event Simulation (DES) where weather restrictions, distance matrix, vessel characteristics and assembly scenarios are taken into account. The purpose of this paper is to simulate the overall transport, assembly and installation of the wind turbine components at sea. The analysis is carried out through DES considering both the real historical weather data (wind speed and wave height) and probabilistic approach. Results of the study, applied to the real Offshore Wind Farm (OWF) configuration, are showing a good agreement between the two proposed models. The results point out that the probabilistic approach is highly affected by the semi-random numbers used to model the stochastic behavior of the input variable so that several iterations (200 to 400) are required to reach the convergence of the simulation outputs. We suggest that seasonality of the outputs of both models are preserved, i.e. the variation of the results depending on the variation of the weather along the year. These findings provide a new framework to address risks and uncertainties in OWF installations. [less ▲]

Detailed reference viewed: 59 (14 ULg)
Full Text
Peer Reviewed
See detailPourcentage de femmes atteignant des T-scores de DMO non ostéoporotiques au rachis lombaire (RL) et à la hanche totale (HT) après 8 ans de traitement par denosumab (DMAb)
Ferrari, S.; Libanati, C.; Lin, J. et al

in Revue du Rhumatisme (2015, November), 82(S1), 35-36

Detailed reference viewed: 14 (2 ULg)
Full Text
Peer Reviewed
See detailImpact of model reduction on the dynamic simulation of a micro-scale concentrated solar power system integrated with a thermal storage
Dickes, Rémi ULg; Wéber, Noé ULg; Lemort, Vincent ULg et al

in Proceedings of the ISES Solar World Congress 2015 (2015, November)

Because of the intermittent nature of solar irradiances, micro-scale solar thermal power systems almost never operate in nominal operating conditions. They are characterized by strong transients and ... [more ▼]

Because of the intermittent nature of solar irradiances, micro-scale solar thermal power systems almost never operate in nominal operating conditions. They are characterized by strong transients and require robust, fast and accurate dynamic simulation tools to permit a proper evaluation of their performance. Model reduction, i.e. the simplification of detailed models, is an attractive method to improve the computational efficiency while simulating such systems. In this context, a µCSP plant featuring a solar field of parabolic troughs, a thermocline storage and a 5kWe power unit is investigated. Both the solar field and the thermocline storage are modeled with complex and simplified methods. The whole power plant is simulated under identical operating condition and deviations between the simulation results are analyzed. Benefits and limitations of the current modeling approach are assessed. Improvements for the modeling of the thermocline storage are identified, implemented and validated. The Modelica language is used as simulation tool and the models developed in this work are integrated in the open-source ThermoCycle library. [less ▲]

Detailed reference viewed: 84 (11 ULg)
Peer Reviewed
See detailThe 'twelfth camel' and the inheritance of the deconstruction in architectural practices.
Bodart, Céline ULg

Conference (2015, November)

Most of recent anthologies on architectural theory concede that the encounter between architects and the derridean philosophy of deconstruction has marked a kind of turning point in our architectural ... [more ▼]

Most of recent anthologies on architectural theory concede that the encounter between architects and the derridean philosophy of deconstruction has marked a kind of turning point in our architectural practices (Sykes, 2010; Mallgrave, Goodman, 2011; Greig, Cairns, Heynen, 2012). Yet this specific episode of our late history seem still provoke a kind of discomfort in the French-speaking part of the contemporary architectural debate. It is as if no one could take on what this disciplinary crossing of the mid-eighties both has produced and has not succeeded in producing. So now, thirty years later, how to be the heirs of such a theoretical experiment? “Inheritance is never a given; it is always a task. It remains before us” (Derrida, 1994). The present paper will attempt to develop what is at stake in the question of the inheritance of deconstruction in architecture. But if inheritance is a “task”, the concern is not here to simply describe it but to take on this task; the concern is to take part at the always ongoing building of this theoretical inheritance. Based on a thesis research still in progress, the paper will present some of the methodological experiments (Despret, 2001) set up in order to build an inheritance for deconstruction in the French-speaking part of architectural debate, and more specifically the original French translation of Wigley's essay, “The Architecture of Deconstruction: Derrida's Haunt”. The translation is here to be understood as an artifact from which new ways to inherit this historical turning of architectural theory can be built. But how to build such an inheritance in a way that doesn't erase its contradictions? And what does it mean to build it today ? The entire methodological apparatus of this attempt of translation will be display as a speculative process, considering theory as a living material for architectural creation. [less ▲]

Detailed reference viewed: 9 (0 ULg)
Full Text
Peer Reviewed
See detailComparable transplant outcomes between DBD and DCD kidney grafts up to 5 years post-transplant: single centre experience
Ledinh, H; DETRY, Olivier ULg; DE ROOVER, Arnaud ULg et al

in Transplant International (2015, November), 28(S4), 193-194188

Introduction: This study aimed to determine the most recent results of kidney transplantation (KT) from donation after brain death (DBD) and circulatory death (DCD). Primary endpoints were graft and ... [more ▼]

Introduction: This study aimed to determine the most recent results of kidney transplantation (KT) from donation after brain death (DBD) and circulatory death (DCD). Primary endpoints were graft and patient survival, and graft function. Acute rejection and post-operative complications were assessed as secondary endpoints. Patient and Methods: This retrospective mono-center review consisted of 226 DBD- and 104 DCD-KT between 2008 and 2014. Results: Graft survival was comparable between two groups (95.1 vs. 91.1% at 1 year, 92.8 vs. 91.1% at 3 years and 89.2 vs. 91.1% at 5 years). 46% and 40% of graft loss were attributed to patient death with a functioning graft and rejection. Patient survival was comparable between 2 groups (97.8 vs. 95.1% at 1 year, 94.1 vs. 91.2% at 3 years, and 89.6 vs. 82.3% at five years). Etiology of patient death included cardiac arrest (16.7%), infection (16.7%), cancer (13.3%), and unknown cause (46.7%). Delayed graft function occurred in 14.6% of DBD- and 30.8% of DCD-KT (p = 0.001). Primary non function was encountered in 2.6% DBD- and 4.8% DCD-KT (p = ns). Graft function was worse in DCD than DBD up to 3 months post-transplant (p = 0.034), however, no difference existed afterwards. Biopsy-proven acute rejection was found in 12.8% and 13.5% of DBD- and DCD-KT during an average 3 months post- transplant (p = ns). This rate was 7.1% vs. 8.9% on surveillance biopsy performed between 3 and 6 months post-transplant (p = ns). Post-operativecomplication rate was comparable between 2 groups, concerning patient death, reoperation, transfusion, perirenal hematoma, macroscopic hematuria, urinary obstruction, wound problem, and infection. Nevertheless, contamination of preservation solution occurred more commonly in DCD than DBD (0.4% vs. 3.8%, p = 0.036). Conclusions: Despite worse early graft function, DCD-KT was not inferior to that originating from DBD up to 5 years post-transplant, therefore deserves to be used. [less ▲]

Detailed reference viewed: 38 (17 ULg)
Full Text
Peer Reviewed
See detailOrgan donation after euthanasia on specific patients' request in Belgium
Ysebaert, D; DETRY, Olivier ULg; Verfaillie, G et al

in Transplant International (2015, November), 28(S4), 114313

Euthanasia is since 2002 legalized in Belgium for adults under strict conditions. The patient must be in a medically futile condition, of constant and unbearable physical or mental suffering that cannot ... [more ▼]

Euthanasia is since 2002 legalized in Belgium for adults under strict conditions. The patient must be in a medically futile condition, of constant and unbearable physical or mental suffering that cannot be alleviated, resulting from a serious and incurable disorder caused by illness. This implies that also non-terminal not-cancer patients can request for euthanasia for instance in case of debilitating neurological disorder. From 2005 till 2015 more than 25 patients, suffering from diverse neuropsychiatric diseases, got their request for euthanasia granted, and subsequently asked spontaneously for the possibility of organ donation. The involved physicians, the transplant teams and the Institutional Ethics Commit- tees, had the well-discussed opinion that this strong request for organ donation after euthanasia could not be denied. A clear separation between the euthanasia request, the euthanasia procedure and the organ procurement procedure was judged necessary. After extensive preparation, finally, in Belgium, 17 patients got their wish for organ donation after euthanasia fulfilled, in several academic or non-academic hospitals and in different regions. Several requests and preparations were started for other patients but ultimately did not lead to organ donation due to patients’ personal choices or logistically reasons. The euthanasia procedure was carried out by three physicians involved in the euthanasia granting. After clinical diagnosis of cardiac death, the procurement team came in and performed the organ procurement similar as in a DCD type III procedure. Almost always, liver, two kidneys and sometimes lungs and pancreatic islets were successfully recovered and transplanted, after allocation by Eurotransplant. The possibility of organ donation after their euthanasia provides a very much improved self-image of these patients, and adds something really positive to the unfortunate end-of-life of these patients. [less ▲]

Detailed reference viewed: 58 (1 ULg)
Peer Reviewed
See detailTransformational Leadership, Role Conflict, and the Moderating Role of Uncertainty Avoidance
Selzer, Veronika Luisa; Schumann, Jan Hendrik; Büttgen, Marion et al

Conference (2015, November)

Detailed reference viewed: 29 (2 ULg)
Full Text
See detailHemipteran - host plant interactions: focus on some model insect saliva
Serteyn, Laurent ULg; Moreau, Sophie; Delatour, Anaïs et al

Poster (2015, November)

Insect salivary components play important roles in plant-insect interactions, stimulating the plant defence or promoting infestation by manipulating plant physiology. Indeed, a variety of enzymes and ... [more ▼]

Insect salivary components play important roles in plant-insect interactions, stimulating the plant defence or promoting infestation by manipulating plant physiology. Indeed, a variety of enzymes and organic components in saliva of herbivory insects can induce series of biochemical responses in damaged plants. In our lab, several studies have been screening proteins in different aphid species saliva. The purpose of our current and future works is to widen that field of study to other piercing-sucking pests and host plants models. Three models will be compared: the pea aphid (Acyrtosiphon pisum Harris), the invasive Asian brown marmorated stink bug (Halyomorpha halys Stål) and the invasive South American green vegetable stink bug (Nezara viridula L.). A preliminary study showed differential expressions in bacterial proteins in salivary glands when N. viridula were exposed to tomato with or without glandular trichomes. This led to questioning whether the internal symbionts influence the adaptability of the pest to the host by manipulating saliva compounds. Then, a study can be led to assess the impact of symbiont profiles on pea aphid saliva proteins. We also began to analyse the impact of several diets on stink bugs salivary glands proteome. We use especially proteomic techniques, such as SDS-PAGE and 2D-DIGE followed by LC-MS/MS and MALDI-TOF analysis, but also liquid chromatography gel free approaches. The perspective would be applying saliva or salivary glands extracts on plant in order to screen its defensive responses by complementary “omic” approaches and, in term, to identify candidate proteins playing a role in plant defence induction or bypass. [less ▲]

Detailed reference viewed: 6 (0 ULg)
See detailNew Observations of Molecular Nitrogen by the Imaging Ultraviolet Spectrograph on MAVEN
Stevens; Evans; Schneider et al

Poster (2015, November)

Detailed reference viewed: 14 (2 ULg)
Full Text
Peer Reviewed
See detailInnovative methods for the determination of the taxonomic origin of processed animal proteins in feed.
Veys, Pascal; Ngo Njembe, M.; Lecrenier, Marie-Caroline ULg et al

Poster (2015, November)

The use of animal by-products in feed depends on their nature defined by the type of tissue or body parts and the species of origin. Currently, the detection of unauthorised processed animal proteins ... [more ▼]

The use of animal by-products in feed depends on their nature defined by the type of tissue or body parts and the species of origin. Currently, the detection of unauthorised processed animal proteins (PAPs) is based on light microscopy and PCR methods. Light microscopy identifies structures on the basis of their morphology and enables identification of particles (such as bones, cartilages, muscle fibres,…) while PCR is able to detect and identify the presence of specific animal DNA in feed. Nevertheless, for some scenarios, even combined, these methods do not succeed in determining the taxonomic origin of the PAPs. A typical example is that of an aquafeed containing authorised porcine PAP together with dairy products: the analysis will conclude of the potential presence of ruminant PAP. Therefore, there is a need for developing methods allowing a taxonomic characterisation of visual structures such as bones fragments and muscle fibres. For the characterisation of bones, NIRM has yet demonstrated its potential. However the limitation of NIRM is when the presence of bones is reduced or absent. This study investigated the potential of NIRM for the determination of the taxonomic origin of muscle fibres. The NIRM was experimented on 2 porcine PAPs vs. 6 ruminant PAPs and 7 fishmeals all of industrial origin. Results showed that NIRM allows differentiating muscle fibres from different taxonomic origins: fish, ruminant and pig. In addition to this taxonomic classification, results also reveal differences inside taxonomic clusters of PAPs (e.g among different ruminant PAPs and porcine PAPs). The results obtained on this type of meals are promising and offer new perspectives. Tests on adulterated feeds need to be performed by NIRM prior to validation. [less ▲]

Detailed reference viewed: 7 (1 ULg)
Full Text
See detailThe pragmatics of correlation or how models reshape the government of technical objects
Thoreau, François ULg; Laurent, Brice

Conference (2015, November)

In this paper we focus on how models carry out correlations and how correlations are used as techniques of government. Correlations are fragile exercises which put together two phenomenon, e.g. one ... [more ▼]

In this paper we focus on how models carry out correlations and how correlations are used as techniques of government. Correlations are fragile exercises which put together two phenomenon, e.g. one nanoparticle and one toxic effect, without linking them with a straight causality. We examine correlations in the situated case of QSAR (quantitative structure-activity relationship) models applied to the toxicity of nanoparticles. Using scientific and regulatory documentation related to QSAR, and the preliminary results of an empirical study of a QSAR project conducted in France, we analyze the initial expectations, i.e. providing knowledge on nanoparticles useful for regulatory purposes, and how this ambition was confronted to the refusal of nanoparticles to feed the QSAR models in a satisfying way. We argue that this led to "thinking on the edge" the wonders and worries of correlation. This calls for a pragmatics of correlation: what does it do? Which are the effects and consequences of a "co-relating" approach? Exploring these questions leads us to examine the type of knowledge produced through models applied to large sets of data, and how it contributes to certain types of regulatory objectivity, particularly in the European legal context. Thus, we discuss the ways in which a pragmatics of correlation offers analytical entry points for the study of the contemporary transformation of the public administration of technical objects.   [less ▲]

Detailed reference viewed: 20 (0 ULg)
See detailIntra-cultivar potential of Desmanthus spp. as a greenhouse gas mitigation strategy for tropical livestock pastoral systems
Vandermeulen, Sophie ULg; Ramírez-Restrepo, Carlos Alberto; Singh, Sultan et al

Poster (2015, November)

Improved agricultural efficiency and reduction in the impacts of tropical livestock farming on habitat degradation require global approaches that enhance ruminant farming functionality in terms of feed ... [more ▼]

Improved agricultural efficiency and reduction in the impacts of tropical livestock farming on habitat degradation require global approaches that enhance ruminant farming functionality in terms of feed use efficiency, emissions and food security. This study evaluated the in vitro mitigation potential of the prostrate to erect, herbaceous Desmanthus spp. pasture legume adapted to semiarid clay soil land types in northern Australia. D. bicornutus, D. leptophyllus and D. virgatus were seasonally harvested from commercial plots by Agrimix Pty. Ltd. Samples of the legumes and the control Rhodes grass (Chloris gayana) using ruminal fluid from grazing Brahman (Bos indicus) steers were incubated in vitro (Ankom RF1 Technology) for 24, 48 and 72 h. Overall, the in vitro organic matter degradability (OMD) and methane production between Desmanthus species differed (P < 0.001). Compared to the control (0.656 ± 0.027 proportion of total OM) at 48 h of incubation, D. leptophyllus showed lower OMD (0.479 ± 0.016), while D. bicornutus (0.688 ± 0.016) and D. virgatus (0.619 ± 0.015) were different from each other, but similar to the control. Methane production (ml/g OM) was 15.7 ± 1.54, 3.7 ± 0.89, 12.0 ± 0.95 and 11.7 ± 0.95, respectively. It is suggested that the impact of these attributes may benefit household farmers in developing economies to expand productivity, improve livelihoods and meet the growing food consumption. Further analyses of the intra-cultivar characteristics of Desmanthus spp. will complement the design of sustainable and efficient interventions across tropical pastoral feeding systems, with a particular emphasis on large-scale grazing operations. [less ▲]

Detailed reference viewed: 45 (8 ULg)
See detailMaintenir la banque de proximité à l’heure du digital: des pressions du contexte aux jeux d’acteurs
Pichault, François ULg; Jarnias, S.; Reydet, S.

Conference (2015, November)

Detailed reference viewed: 33 (0 ULg)
Full Text
Peer Reviewed
See detailPièges à considérer lors de l’évaluation isocinétique
Croisier, Jean-Louis ULg; Kaux, Jean-François ULg; Crielaard, Jean-Michel ULg et al

in Abstract book des XVIIèmes RENCONTRES ISOCINETIQUES DE MEDIMEX (2015, November)

Detailed reference viewed: 59 (2 ULg)
Full Text
See detailMulti-allergens detection by flow cytometric immunoassay
Otto; Planque; Lamote et al

Poster (2015, November)

Detailed reference viewed: 19 (1 ULg)
Full Text
Peer Reviewed
See detailEvaluation isocinétique et fonctionnelle de la rupture de coiffe des rotateurs non opérée
Forthomme, Bénédicte ULg; Schwartz, Cédric ULg; MAHIEU, Xavier ULg et al

in Abstract book des XVIIèmes RENCONTRES ISOCINETIQUES DE MEDIMEX (2015, November)

Detailed reference viewed: 96 (16 ULg)
Full Text
Peer Reviewed
See detailTransfusion needs during liver transplantation at the chu of liege (belgium): characteristics and preoperative predictive factors
PAGE, Isaline ULg; HANS, Grégory ULg; DETRY, Olivier ULg et al

in Transplant International (2015, November), 28(S4), 461272

Introduction: Liver transplantation (LT) can result in significant bleeding requiring transfusion of allogenic blood products, which potentially leads to postoperative morbidity and mortality (1). This ... [more ▼]

Introduction: Liver transplantation (LT) can result in significant bleeding requiring transfusion of allogenic blood products, which potentially leads to postoperative morbidity and mortality (1). This study aimed to determine transfusion needs during LT in our institution and its preoperative predictive factors. Material and Methods: Two hundred LT performed at the CHU Liege between 2006 and 2012 were respectively reviewed (age = 55 ` 11 yo, BMI = 25.5 ` 4.4 kg/m2, F/M = 45/155, MELD score = 19 ` 10). Transfu- sion needs of the different blood products during POD 0, and POD 0–7 were recorded. Parameters associated with the transfusion of more than 2 units of RBC (p ≤ 0.1) were identified using the Kruskal Wallis and chi square tests (table 1). These parameters were then placed into a backward stepwise logistic regression model for the transfusion of more than two units of RBC at POD 0. A p value threshold ≥0.1 was used for leaving the model. Results: Transfusion needs were: RBC = 2[0–4], FFP = 4[2–7], PLT = 1[0– 1] during POD 0; and RBC = 3[0–6], FFP = 6[3–10], PLT = 1[0–2] during POD 0–7. Preoperative factors independently associated with the transfusion of more than two units of RBC were preop Hb (0.6 [0.46–0.79], p < 0.001) and MELD score (1.13 [1.06–1.20], p < 0.001). Discussion: These results suggest that preop Hb and MELD score are associated with blood requirements during LT. [less ▲]

Detailed reference viewed: 18 (3 ULg)
Full Text
Peer Reviewed
See detailTraitement par denosumab chez des hommes à masse osseuse basse: résultats à 24 mois de l'étude ADAMO
Chapurlat, R.; Langdahl, B.; Teglbjaerg, C. et al

in Revue du Rhumatisme (2015, November), 82(S1), 123-124

Detailed reference viewed: 18 (2 ULg)
See detailPolymer chemistry for theragnostics
Liu, Ji; Detrembleur, Christophe ULg; Duguet, Etienne et al

Conference (2015, November)

Stimuli-responsive nano-materials have been playing increasingly important roles in the biomedical field due to their ability to adapt their physico-chemical properties in response to external stimuli ... [more ▼]

Stimuli-responsive nano-materials have been playing increasingly important roles in the biomedical field due to their ability to adapt their physico-chemical properties in response to external stimuli, such as temperature, pH, ionic strength, magnetic field, etc. Nanohybrids combining inorganic particles and stimuli-responsive polymers are particularly well-suited to develop advanced drug nanocarriers for targeted delivery and concomitant diagnostics. Based on the recent developments in controlled radical polymerization, especially cobalt-mediated radical polymerization, various hybrid nanostructures have been synthesized and tested as drug delivery systems able to trigger the drug release in response to dedicated environment conditions or external stimuli. Studies on cytotoxicity, cellular uptake and in vitro triggered release with cell culture will also highlight the potential of these new materials. [less ▲]

Detailed reference viewed: 56 (7 ULg)
Full Text
See detailEtude technique et dendrochronologique de la roue découverte dans le puits du château fort de logne
Hoffsummer, Patrick ULg; Delye, Emmanuel ULg; Wéry, Benoit

in Frébutte, Christian (Ed.) Pré-actes des Journées d'Archéologie en Wallonie (2015, November)

Detailed reference viewed: 28 (7 ULg)
Full Text
Peer Reviewed
See detailBurundi: L'enseignement et apprentissage du français aux élèves rapatriés
Nshinyabashira, Guy-André ULg

Conference (2015, November)

Burundi: The teaching and learning of French returnees students Summary of the report 1965, 1969, 1972 and from April 2015 1988.1993 alas, Burundi lives recurrently a political-ethnic violence spiral that ... [more ▼]

Burundi: The teaching and learning of French returnees students Summary of the report 1965, 1969, 1972 and from April 2015 1988.1993 alas, Burundi lives recurrently a political-ethnic violence spiral that claimed the lives of hundreds of thousands of Burundian and forced into internal and external exile more one million Burundi. Since 2006, most of these exiles began returning voluntarily, while others are forcibly evicted from Tanzania to neighboring provinces of Burundi. In total, 478 865 people have been repatriated since 2002 and 95.068 in 2008. And since August 2013, following the political tensions between Rwanda (northern Burundi) and Tanzania (east and southern Burundi) 10,000 5à Burundi refugees were forcibly repatriated a week. People in school age integrate the education system in place where French is a language taught and teaching language. It was initiated in classes, intercultural dialogue of languages and cultures in contact between students who speak Swahili and English on one hand and on the other hand their hosts who speak Kirundi and French elementary level. However, resistors extending to verbal or physical violence are seen following their remoteness of linguistic realities of their migratory journey To achieve the objectives of social inclusion and school integration strategies have been implemented to allow newcomers to develop a practice more or less adequate French. Cultural sessions with spontaneous participation and freedom to use the language they master the most (French, English, Swahili and Kirundi) facilitated the initiation of a synergy in training in French with other languages of the course migration of our learners Based on a work tool, basic lexicon in four languages taught in Burundi in 2011 funded a priority solidarity fund for French cooperation I introduced theatrical improvisations activities such as motivational tools and learning about living together and reconciliation and for the personal development of learners pleasure of learning French and to learn French we have prepared and performed a sequence on reconciliation Patrice Faye and each repetition was , simultaneously, subject to a French lesson . This was a source of cohesion among our learners. The motivation was strengthened and despite their learning difficulties and communicate a positive report to the French language has gradually developed and installed. Note , for all practical purposes, a dramatic decision in 2006 , months after the end of a terrible war , was to install the compulsory teaching of languages in the first four primary year to a student population of six years following a 90% rural population . This was to teach simultaneously Kirundi (L1) , mother tongue, French (L2 ), English (L3) and Kiswahili (L4) , widespread language in the neighboring States. This measure was the subject of a scientific and political debate it is easy to guess. This issue has , subsequently made subject of my thesis project title ; " Burundi : The teaching and learning of French to college kids repatriated from Tanzania and the East of the DRC .Profils language , school conditions and educational proposals" Burundi : L’enseignement et apprentissage du français aux élèves rapatriés Résumé de la communication 1965, 1969, 1972, 1988,1993 et depuis avril 2015 hélas, le Burundi vit de manière récurrente une spirale de violences politico-ethnique qui a emporté la vie des centaines de milliers de burundais et contraint à l’exil intérieur et extérieur plus d’un million de burundais. Depuis 2006, la plupart de ces exilés ont commencé à rentrer de façon volontaire, tandis que d’autres sont expulsés de force de la Tanzanie, vers des provinces limitrophes du Burundi. Au total, 478.865 personnes ont été rapatriées depuis 2002, et 95.068 en 2008. Et depuis août 2013, suite aux tensions politiques entre le Rwanda (au nord du Burundi) et la Tanzanie (à l’Est et sud du Burundi), 5à 10.000 réfugiés burundais étaient rapatriés de force par semaine . Les personnes en âge scolaires intègrent le système éducatif en place où le français est une langue enseignée et langue d’enseignement. Il s’agissait d’initier, dans les classes, un dialogue interculturel des langues et cultures en contact entre les élèves qui parlent le swahili et l’anglais d’une part et d’autre part leurs hôtes qui parlent le kirundi et un français de niveau élémentaire. Cependant, des résistances allant jusqu’aux violences verbales voire physiques s’observent suite à leur éloignement des réalités linguistiques de leur parcours migratoire. Afin de réaliser les objectifs d’insertion sociale et d’intégration scolaire, des stratégies ont été mises en œuvre pour permettre aux nouveaux arrivants de développer une pratique plus ou moins suffisante du français. Des séances culturelles avec une participation spontanée et liberté d’utiliser la langue qu’on maîtrise le plus (français, anglais, swahili et le kirundi ) ont facilité la mise en route d’une formation en français en synergie avec les autres langues du parcours migratoire de nos apprenants en nous basant sur un outil de travail, Lexique de base en quatre langues enseignées au Burundi,2011 financé par un fonds de solidarité prioritaire de la coopération française . J’ai introduit des activités d’improvisations théâtrales, comme outils de motivation et d’apprentissage, sur le vivre ensemble et la réconciliation, puis, pour l’épanouissement personnel des apprenants au plaisir d’apprendre en français et d’apprendre le français, nous avons préparé et joué une séquence sur la réconciliation de Patrice FAYE et chaque répétition faisait, en même temps, objet d’une leçon de français. Ceci a été une source de cohésion entre nos apprenants. La motivation s’était renforcée et malgré leurs difficultés d’apprentissage et de communiquer, un rapport positif à la langue française s’est peu à peu élaboré et installé. Notons, pour toutes fins utiles, qu'une décision spectaculaire prise en 2006, quelques mois après la fin d'une épouvantable guerre, était d'installer l'enseignement obligatoire de quatre langues dès la première année du primaire, à une clientèle scolaire de six ans issue d'une population à 90 % rurale. Il s'agissait d'enseigner en même temps le kirundi (L1), langue maternelle, le français (L2), l'anglais (L3) et le kiswahili (L4), langue répandue dans les États voisins. Cette mesure a été l'objet d'un débat scientifique et politique qu'il est aisé de deviner. Cette question a, par la suite, fait objet du titre mon projet de thèse ; « Burundi : L’enseignement et apprentissage du français aux jeunes collégiens rapatriés de Tanzanie et de l’Est de la RDC .Profils linguistiques, conditions scolaires et propositions didactiques » [less ▲]

Detailed reference viewed: 45 (2 ULg)
Full Text
Peer Reviewed
See detailA consecutive series of 100 controlled DCD liver transplantation
DETRY, Olivier ULg; DE ROOVER, Arnaud ULg; Ledinh, H et al

in Transplant International (2015, November), 28(S4), 109296

Introduction: Donation after circulatory death (DCD) have been proposed to partially overcome the organ donor shortage. DCD-LT remains controversial, with reported increased risk of graft loss and ... [more ▼]

Introduction: Donation after circulatory death (DCD) have been proposed to partially overcome the organ donor shortage. DCD-LT remains controversial, with reported increased risk of graft loss and retransplantation. The authors retrospectively reviewed a single centre experience with controlled DCD-LT in a 12-year period. Patients and Methods: 100 DCD-LT were consecutively performed between 2003 and 2014. All donation and procurement procedures were performed as controlled DCD in operative rooms. Data are presented as median (ranges). Median donor age was 57 years (16–83). Median DRI was 2.16 (1.4–3.4). Most grafts were flushed with HTK solution. Allocation was centre-based. Median recipient MELD score at LT was 15 (7–40). Mean follow-up was 35 months. No patient was lost to follow-up. Results: Median total DCD warm ischemia was 19 min (10–39). Median cold ischemia was 235 min (113–576). Median peak AST was 1132 U/l (282– 21 928). Median peak bilirubin was 28 mg/dL. Patient survivals were 90.7%, 75.5% and 70.7% at 1.3 and 5 years, respectively. Graft survivals were 88.7%, 72.1% and 67.1% at 1.3 and 5 years, respectively. Biliary complications included mainly anastomotic strictures and extrahepatic main bile duct ischemic obstruction, that were managed either by endoscopy or hepatico- jejunostomy. No PNF or graft loss due to ischemic cholangiopathy was observed in this series. Discussion: In this series, DCD LT appears to provide results similar to classical LT. Short cold ischemia and recipient selection with low MELD score may be the keys to good results in DCD LT, in terms of graft survival and avoidance of ischemic cholangiopathy. If symptomatic ischemic cholangiopa- thy is diagnosed, adequate management with endoscopy and surgical hepaticojejunostomy may avoid graft loss and retransplantation. [less ▲]

Detailed reference viewed: 25 (0 ULg)
See detailTwo Types of Aurora on Mars as Observed by MAVEN's Imaging UltraViolet Spectrograph
Schneider; Deighan; Jain et al

Poster (2015, November)

Detailed reference viewed: 16 (1 ULg)
See detailStructure and variability of the Martian upper atmosphere: Ultraviolet dayglow observations by MAVEN/IUVS
Deighan; Jain; Lo et al

Conference (2015, November)

Detailed reference viewed: 16 (0 ULg)
See detailLa dissolution des mœurs à Liège aux XVIIe et XVIIIe siècles
Drécourt, Aurore ULg

Conference (2015, November)

Detailed reference viewed: 23 (3 ULg)
Full Text
Peer Reviewed
See detailInfusion of third-party mesenchymal stream cells after liver transplantation: a phase-1, open-label, clinical study
DETRY, Olivier ULg; VANDERMEULEN, Morgan ULg; DELBOUILLE, Marie-Hélène ULg et al

in Transplant International (2015, November), 28(S4), 1027

Background: Mesenchymal stromal cells (MSC) are multipotent bone mar- row progenitors that have demonstrated significant immunosuppressive effects in various in vivo and in vitro studies. This study aimed ... [more ▼]

Background: Mesenchymal stromal cells (MSC) are multipotent bone mar- row progenitors that have demonstrated significant immunosuppressive effects in various in vivo and in vitro studies. This study aimed to be the first evaluation of the safety and tolerability of MSC infusion after liver transplantation in a prospective, controlled phase-1 study. Methods: 10 liver transplant recipients under standard immunosuppression (TAC-MMF-low dose steroids until day 30) received 1.5–3 9 106/kg third party MSC on post-operative day 3 ` 2. These patients were prospectively compared to a group of 10 control liver recipients. Primary endpoints were MSC infusion toxicity, and incidence of cancer and opportunistic infections at month 6. Secondary endpoints were patient and graft survivals and rejection at month 6, as well as the effects of MSC on recipients’ immune function and on immunohistology of at month 6 graft biopsies. Results: No MSC infusional toxicity was observed. Both groups were comparable in terms of donor and recipient characteristics. There was no difference in primary end-points between control and MSC groups. No patient developed de novo cancer. There was no statistical difference in patient and graft survivals or in rejection rates. There was no graft rejection in the MSC group. Month-6 graft biopsies were not different according to Banff and fibrosis scores. Discussion: This phase 1 study showed excellent tolerability and safety of a single infusion of third-party MSC after liver transplantation. There were no graft safety issues and no excess of immunosuppression after MSC injection. Further analyses of consequences of MSC injection on the immune profile are needed. The possibility of avoiding calcineurin-inhibitors with repeated MSC injections as main immunosuppressive therapy and/of tolerance induction by MSC infusion should be investigated by further studies. This study is in part supported by an ESOT Senior Clinical Research Grant and by the University of Liege. [less ▲]

Detailed reference viewed: 25 (3 ULg)
Peer Reviewed
See detailRimbaud fétiche
Saint-Amand, Denis ULg

Conference (2015, November)

Detailed reference viewed: 15 (1 ULg)
Full Text
Peer Reviewed
See detailPourquoi dort-on?
BARREA, Christophe ULg

in 72ème Congrès du Gbpf: De Morphée au cauchemar (2015, November)

Detailed reference viewed: 18 (0 ULg)
Full Text
See detailActivity vs. Stability: a multi-proxy approach to reconstruct fluvial morphodynamics of Wadi Selloum in the vicinity of the rock shelter Ifri n’ammar (Morocco)
Bartz, Melanie; Rhixon, Gilles; El Ouahabi, Meriam ULg et al

Conference (2015, November)

The impact of environmental changes on the emergence and dispersal of anatomically modern humans (AMH) is particularly important in North Africa, since the Straits of Gibraltar might have served as ... [more ▼]

The impact of environmental changes on the emergence and dispersal of anatomically modern humans (AMH) is particularly important in North Africa, since the Straits of Gibraltar might have served as western migration route for AMH from Africa to Europe. The prehistoric rock shelter of Ifri n’Ammar in NE Morocco reveals discontinuous Middle and Late Palaeolithic occupation phases since ~170 ka. Our study focuses on Wadi Selloum deposits to unravel palaeoenvironmental features and geomorphological aspects of the direct vicinity of Ifri n’Ammar. As a tributary of the Moulouya River, the catchment area of this ephemeral stream amounts to ~290 km², spanning elevations between ~700 and 200 m above sea level. Headwaters of the 35 km long Wadi Selloum drain Mesozoic limestone and dolomite. The application of luminescence dating techniques on Wadi Selloum deposits yielded burial ages between 1.3 ± 0.2 ka and 78 ± 7 ka, covering morphodynamically stable and active phases. Overbank fines include well-developed soil horizons as evidence of stability and of more humid periods than today around 80 ka and during the Holocene. This is supported by pedofeatures discovered in thin sections as well as the composition of clay minerals of the wadi sediments. Disordered clay minerals and partly illite/chlorite mixed-layer characterize the soil levels. Levels relatively rich in chlorite, illite, ankerite and quartz are interpreted as corresponding to relatively dry periods, while more humid periods lead to more intensive weathering and consequently to the dominance of clay minerals more advanced in the relative stability scale, such as kaolinite. Smectite is taken to indicate a climate with contrasting seasons and a pronounced dry season. In contrast, coarse-grained deposits, which are partly characterised by calcrete layers, point to drier conditions after 80 ka and 14 ka. In addition, the lack of palaeosols confirms morphodynamic activity during these periods. Acknowledgement. This research is supported by the German Research Foundation (DFG) within the framework of the CRC 806 “Our Way to Europe” (http://www.sfb806.uni-koeln.de/). [less ▲]

Detailed reference viewed: 14 (0 ULg)
Full Text
Peer Reviewed
See detailImpact of timing administration of mesenchymal stromal cells on serum creatinine following renal ischemia/ reperfusion in rats
ERPICUM, Pauline ULg; Rowart, Pascal ULg; POMA, Laurence ULg et al

in Transplant International (2015, November), 28(S4), 1129

Experimental models of renal ischemia/reperfusion (I/R) have suggested protective effects of mesenchymal stromal cells (MSC) therapy. Still, param- eters of MSC injection, including volume, route and ... [more ▼]

Experimental models of renal ischemia/reperfusion (I/R) have suggested protective effects of mesenchymal stromal cells (MSC) therapy. Still, param- eters of MSC injection, including volume, route and timing of cell administration, remain largely debated. Particularly, MSC infusion in mouse has been shown to be beneficial “a priori” but deleterious “a posteriori” of renal I/R injury. In order to further investigate the influence of the timing of MSC administration, we used 10-week-old Lewis rats categorized in 4 groups. Groups 1 (MSC D-7, n = 10) and 2 (MSC D + 1, n = 7) received caudal i.v. injection of MSC (1.5 9 106 in 1 ml of saline) 7 days before or 1 day after renal I/R, respectively. Control groups 3 (saline D-7, n = 6) and 4 (saline D + 1, n = 6) received equal volume of saline at similar time points. Left renal ischemia (by clamping of the renal pedicle) lasted 45 min. Right nephrectomy was simultaneously performed. Blood sample was collected from inferior vena cava at 48 h post reperfusion. MSC phenotype was confirmed by FACS analysis. In groups 1 and 3, serum creatinine (SCr) reached 1.4 ` 0.7 versus 2.4 ` 0.8 mg/dl, respectively (p < 0.05). In groups 2 and 4, SCr was 4.9 ` 0.7 versus 3.3 ` 0.9 mg/dl, respectively (p < 0.001). Furthermore, SCr levels were statistically worse when MSC were administered after renal I/R in comparison to a priori infusion (p < 0.0001). In conclusion, MSC administration 7 days prior to renal I/R attenuates kidney injury in comparison to (i) saline infusion or (ii) MSC infusion 1 day after renal I/R. Conversely, on the basis of SCr levels, MSC therapy performed after renal I/R worsens kidney injury in rats. [less ▲]

Detailed reference viewed: 41 (13 ULg)
Full Text
Peer Reviewed
See detailIncreased risk of interstitial fibrosis and tubular atrophy in controlled donation after circulatory death kidney transplantation
WEEKERS, Laurent ULg; Ledinh, H; BONVOISIN, Catherine ULg et al

in Transplant International (2015, November), 28(S4), 49118

Introduction: Comparable transplant outcomes between controlled donation after circulatory death (cDCD) and donation after brain death (DBD) kidney transplantation (KT) have been confirmed. However, few ... [more ▼]

Introduction: Comparable transplant outcomes between controlled donation after circulatory death (cDCD) and donation after brain death (DBD) kidney transplantation (KT) have been confirmed. However, few data describes the histology of cDCD-KT which is subjected to prolonged procurement warm ischemia. This study aimed to evaluate the rate of interstitial fibrosis (IF) and tubular atrophy (TA) on the surveillance biopsy performed in our unit between the 2 and 6 months post KT. Acute rejection was considered as secondary endpoint. Patients and Methods: 330 KT (226 DBD and 104 DCD) have been performed between 2008 and 2014. Surveillance or per-cause biopsy was performed in 272 recipients. Among them, the rate of adequate (≥8 glomeruli and ≥1 large-sized artery) was 76.8%. Results: IFTA was found in 11.5% and 25.7% of DBD and cDCD-KT, respectively (p = 0.004). Considering IF and TA separately, the corresponding rates were 20.4% vs 32% (p = 0.04) and 23% vs 36% (p = 0.03), respectively. If acute rejection before routine biopsy was excluded, either IF or TA rate was significantly higher in cDCD- than DBD-KT (12.6% vs 27.1%, p = 0.006; 17.6% vs 31.4%, p = 0.016; and 20.9% vs 35.7%, p = 0.015 in case of IF-TA, IF, and TA, respectively). A cDCD-KT compared to a DBD-KT was 3.11 (95%CI 1.51– 6.43, p = 0.002), 2.34 (95%CI 1.21–4.53, p = 0.011) and 2.29 (95%CI 1.23– 4.27, p = 0.009) times more likely to have IFTA, IF, and TA, respectively. Extended criteria donor (ECD) vs standard criteria donor (SCD) was also an independent risk factor for IFTA (OR = 3.11, 95%CI 1.51–6.43, p = 0.002), IF (OR = 4.86, 95%CI 1.96–12.05, p = 0.001), and TA (OR = 4.09, 95%CI 1.68– 9.93, p = 0.002). The rate of acute rejection diagnosed by SB was 7.1% and 8.9% in DBD and cDCD kidney grafts (p = ns), respectively.Conclusion: KT from cDCD increased the risk of IF-TA between 3 and 6 months post-transplant. Further studies are warranted to investigate the evolution of this phenomenon over time and its effect on graft function. [less ▲]

Detailed reference viewed: 27 (2 ULg)
Full Text
Peer Reviewed
See detailThird-party mesenchymal stem cell infusion in kidney transplant recipient: 6-month safety interim analysis
WEEKERS, Laurent ULg; ERPICUM, Pauline ULg; DETRY, Olivier ULg et al

in Transplant International (2015, November), 28(S4), 223-224278

Background: Mesenchymal stromal cell (MSC) have immunomodulating properties and could be used as immunosuppressive agents. We report the 6- month safety results for the 5 first patients treated with MSC ... [more ▼]

Background: Mesenchymal stromal cell (MSC) have immunomodulating properties and could be used as immunosuppressive agents. We report the 6- month safety results for the 5 first patients treated with MSC after kidney transplantation (KTx). Here, we address 3 specific safety issues: immunization against MSC and engraftment syndrome defined as acute graft dysfunction not related to rejection and over-immunosuppression. Patients and method: MSC production was carried out locally. MSC were not matched with kidney recipients’ HLA. Included patients were non-immunized, first transplant recipients from deceased donors. MSC (1.5–3.0 9 106/kg) infusion was planned 3 to 5 days post KTx. Patients with cardiovascular instability post KTx were excluded. All patients were treated with Basiliximab induction, Tacrolimus, Mycophenolate Mofetil and Steroid. We prospectively screened for anti-HLA antibodies at month 1, 3 and 6. Informed consent was obtained from all participants. The local ethical committee approved the protocol. Results: Collectively there were 23/50 and 29/50 HLA mismatches (MM) with kidney and MSC donor respectively, out of which 5 were shared MM. One patient developed de novo DSA, 2 patients anti-HLA antibodies against shared kidney/MSC MM and 1 patient developed 2 specific antibodies against MSC (MSCSA) at month 6. All antibodies were anti HLA class I except for 1. We did not observe any “engraftment” syndrome. Three patients experienced non- severe opportunistic infections: 1 CMV reactivation and 2 polyoma-BK virus viremia.Conclusion: We did not observe any strong safety signal. We did however observe some degree of immunization in 3 patients: 2 developed antibodies against shared kidney/MSC donor HLA MM and 1 MSCSA. [less ▲]

Detailed reference viewed: 28 (8 ULg)
See detailRethinking the "case mémorable" : Olivier Josso Hamel's Memories of Comics in "Au travail"
Crucifix, Benoît ULg

Conference (2015, October 31)

In 1984, introducing a new section of Les Cahiers de la bande dessinée, Pierre Sterckx coined the concept of “case mémorable” (remembered panel) to refer to specific comics panels remembered from ... [more ▼]

In 1984, introducing a new section of Les Cahiers de la bande dessinée, Pierre Sterckx coined the concept of “case mémorable” (remembered panel) to refer to specific comics panels remembered from childhood reading because of their visual effect. The idea of a case mémorable, however, was not only a cognitive concept: it implied an active remembrance, as the magazine section urged readers to send in their analyses of their own remembered panels. It consisted in an intimate act of canonization based on the collective sharing of a personal history of comics. As Sterckx wrote, the case mémorable is “an atom of comics history.” French cartoonists Blutch and Olivier Josso Hamel have put the concept to fruitful uses in their autobiographical work, coupling the remembrance of their childhood to that of their reading experiences. This paper focuses in particular on Josso Hamel's Au travail, sketching out how the author represents an anti-narrative reading experience, projecting his own experiences onto the albums, reshaping their narratives along other axes. Redrawing these panels further compels the artist to reinvent his own graphic style. In this sense, Josso Hamel portrays what it means to remember and possess an image, raising compelling questions not only about quotation and appropriation but also about the relation between the single image and the narrative sequence, which are examined under the light of comics theory (Baetens, Marion) and film studies (Burgin, Mulvey). Through the analysis of Josso Hamel's bande dessinée, this paper revisits Sterckx's concept of the remembered panel as a citational practice loaded with memory-making effects. [less ▲]

Detailed reference viewed: 24 (3 ULg)
Full Text
See detailLe nouveau régime fiscal des intercommunales
Garroy, Sabine ULg

Conference (2015, October 31)

Detailed reference viewed: 24 (4 ULg)
Full Text
Peer Reviewed
See detailTowards a TEI compliant interchange format for Ancient Egyptian-Coptic textual resources
Coulon, Laurent; Elwert, Frederik; Morlock, Emmanuelle et al

Conference (2015, October 30)

Sharing digital textual resources is an actual challenge for scholars working on Ancient Egyptian-Coptic (3000 BC-1350 AD). There are two types of reasons for this: first, the different writing systems ... [more ▼]

Sharing digital textual resources is an actual challenge for scholars working on Ancient Egyptian-Coptic (3000 BC-1350 AD). There are two types of reasons for this: first, the different writing systems that have been used throughout the history of this language (hieroglyphic and hieratic scripts, demotic, Coptic) led to various solutions as regards the encoding of texts; second, the diverging aims and scopes of the projects involved in creating annotated corpora of Ancient Egyptian-Coptic generated representation formats with few characteristics in common. As a result, the resources themselves cannot be shared, and no standard tool can be used for encoding, annotating, querying or analyzing these resources. In order to overcome these issues, several leading projects in the field join forces and introduce a TEI compliant interchange data model that has the following characteristics: 1) The ancient Egyptian-Coptic TEI interchange data model represents an agreement on a subset of the EpiDoc schema towards which the textual data of each project can be converted. Project specific annotations are dealt with either using stand-off markup that refers to tokens of transliterated texts (Bański 2010; Pose et al. 2014), or on the basis of data models that are true expansions of the kernel interchange data model. 2) The specialized metadata elements and attributes referring to Egyptological concepts are based on controlled vocabularies that are shared and enriched collaboratively by the projects. 3) These metadata apply either to physical text-bearing objects, inscribed physical features, witnesses (on documents) or texts (Morlock & Santin 2014). As the conceptualization of the relationship between these entities is shared between projects, coherence and precision when describing both the material, philological and linguistic dimensions of textual resources can be obtained. [less ▲]

Detailed reference viewed: 221 (7 ULg)
Full Text
See detailThe Body Beautiful: Le corps en résistance dans le cinéma de Ngozi Onwurah.
Herbert, Emilie ULg

Conference (2015, October 30)

Detailed reference viewed: 15 (1 ULg)
Full Text
See detailImproving laboratory diagnostic capacity of epizootic diseases in Belgium
Cargnel, Mickaël ULg; Roelandt, Sophie; Van der Stede, Yves et al

Poster (2015, October 30)

Belgium and other European neighbouring countries faced several emerging and re-emerging diseases as well as zoonotic diseases over the last decade. However, it has been noticed that during these episodes ... [more ▼]

Belgium and other European neighbouring countries faced several emerging and re-emerging diseases as well as zoonotic diseases over the last decade. However, it has been noticed that during these episodes, the laboratory diagnostic capabilities were surpassed, which led to an increase in the time required for the control and the eradication of these diseases. Belgium is a European hub and can be affected by these diseases which can via different paths e.g. trade of live animals or animal products from around the world or via wildlife. It is therefore crucial to react rapidly to these diseases, to establish contingency plans and to develop appropriate diagnostic tests. Moreover, there are only few publications looking at the issues of increased diagnostic capacities for epizootic diseases based on [less ▲]

Detailed reference viewed: 26 (9 ULg)
See detailThe potential of OpenStreetMap for land use/land cover mapping
Minet, Julien ULg; Robert, Brieuc; Tychon, Bernard ULg

Conference (2015, October 29)

Land use and land cover (LULC) maps are important tools for the management of the environment, in particular for the modelling of biogeochemical cycles and climate. LULC maps are typically produced using ... [more ▼]

Land use and land cover (LULC) maps are important tools for the management of the environment, in particular for the modelling of biogeochemical cycles and climate. LULC maps are typically produced using supervised classification of satellite images supported by expert knowledge. Nowadays, the advance of the crowdsourced project OpenStreetMap (OSM) offers an alternative to official LULC maps. In OSM, LULC is usually mapped by manual digitalisation of satellite imagery and/or by the import of existing databases. We explored the potential of OSM to contribute to the improvement of an existing LULC map, Corine Land Cover (CLC), by comparing forest cover in Southern Belgium and Luxembourg. We focused on three forest types that were common to the two databases: coniferous, deciduous and mixed forest. Confusion matrices showed that the two databases differed in terms of classes over about one quarter of the forest area. Moreover, 9.9% and 8.0% of the forest area in OSM and CLC, respectively, were unmapped as forest area compared to the other database. Compared to CLC data, small patches of forest areas are mapped in OSM data. This study is a first attempt to show the potential of a crowdsourced project, i.e., OSM, to contribute to an official geodatabase. While current drawbacks of OSM such as the lack of completeness may limit its application in some operational applications, we claim that its large accessibility and its potentially high reactiveness makes OSM a serious alternative to existing geodatabase. [less ▲]

Detailed reference viewed: 115 (2 ULg)
Full Text
Peer Reviewed
See detailFaculty engagement with blended learning - A study based on the Theory of Planned Behavior
Huart, Johanne ULg; Detroz, Pascal ULg; Verpoorten, Dominique ULg

Conference (2015, October 29)

The paper presents the methodology and results of a survey research conducted at the University of Liege (Belgium) about blended learning (Garrison & Vaughan, 2012). It investigates the level of use of ... [more ▼]

The paper presents the methodology and results of a survey research conducted at the University of Liege (Belgium) about blended learning (Garrison & Vaughan, 2012). It investigates the level of use of this instructional practice and elicits determinants that predict or prevent its implementation. [less ▲]

Detailed reference viewed: 48 (14 ULg)
Full Text
See detailTraitements médicaux des tendinopathies
Kaux, Jean-François ULg

Conference (2015, October 29)

Detailed reference viewed: 34 (10 ULg)
Full Text
Peer Reviewed
See detailInfusing SoTL components in staff training - A faculty development continuum at the university of Liège
Verpoorten, Dominique ULg; Jérôme, Françoise ULg; Delfosse, Catherine ULg et al

Conference (2015, October 29)

This presentation documents the attempt of the University of Liège (Belgium) to establish a "pedagogical development continuum" by offering three nested programs, each likely to be credited in the next ... [more ▼]

This presentation documents the attempt of the University of Liège (Belgium) to establish a "pedagogical development continuum" by offering three nested programs, each likely to be credited in the next one, thanks to a single overarching competency framework (the CREER model). At a proper level of intensity, each program builds upon components of SoTL, defined after Potter & Kustra (2011) as: "the systematic study of teaching and learning, using established or validated criteria of scholarship, to understand how teaching (beliefs, behaviours, attitudes, and values) can maximize learning, and/or develop a more accurate understanding of learning, resulting in products that are publicly shared for critique and use by an appropriate community". [less ▲]

Detailed reference viewed: 37 (10 ULg)
Full Text
Peer Reviewed
See detailIn vitro and in vivo evaluation of an optimized fenofibrate lipid based solid dispersion produced by a PGSS process
Pestieau, Aude ULg; Lebrun, Sonia; Cahay, Bernard et al

Conference (2015, October 28)

Detailed reference viewed: 21 (1 ULg)
Full Text
See detailComputing k-binomial equivalence and avoiding binomial repetitions
Rigo, Michel ULg

Conference (2015, October 28)

In this talk, I will first recall basic results on binomial coefficients of words, then review the connections and differences with Parikh matrices. As a generalization of abelian equivalence, two words u ... [more ▼]

In this talk, I will first recall basic results on binomial coefficients of words, then review the connections and differences with Parikh matrices. As a generalization of abelian equivalence, two words u and v are k-binomially equivalent if every word of length at most k appears as a subword of u exactly as many times as it appears as a subword of v. So a k-binomial square is a word uv where u and v are k-binomially equivalent. We will discuss avoidance of squares and cubes in infinite words (this is a joint word with M. Rao). Finally, I will consider the question of deciding whether or not two finite words are k-binomially equivalent. This problem has recently been shown to be decidable in polynomial time by Freydenberger, Gawrychowski et al. [less ▲]

Detailed reference viewed: 48 (8 ULg)
Full Text
Peer Reviewed
See detailIn vitro and in vivo evaluation of an optimized fenofibrate lipid based solid dispersion produced by a PGSS process
Pestieau, Aude ULg; Lebrun, Sonia; Cahay, Bernard et al

Poster (2015, October 28)

Detailed reference viewed: 27 (3 ULg)
Full Text
See detailLes exigences de la « terrestrialité »: une épreuve pour l’enquête
Thoreau, François ULg

Conference (2015, October 27)

Detailed reference viewed: 19 (2 ULg)
Full Text
See detailWhat is Quaternary prevention ?
Jamoulle, Marc ULg

Conference (2015, October 27)

Principle of quaternary prevention

Detailed reference viewed: 73 (9 ULg)
Full Text
See detailPourquoi l'écriture importe
Pieron, Julien ULg

Conference (2015, October 27)

Detailed reference viewed: 24 (5 ULg)
Full Text
Peer Reviewed
See detailDynamics of Internalization and Recycling of the pro-Metastatic Membrane Type 4-Matrix Metalloproteinase (MT4-MMP) in Breast Cancer cells
Truong, Alice ULg; Yip, Cassandre ULg; PAYE, Alexandra ULg et al

Poster (2015, October 26)

MT4-MMP (MMP17) is a glycosyl-phosphatidyl inositol-anchored membrane-type matrix metalloproteinase expressed at the cell surface of human breast cancer cells. In triple negative breast cancer, MT4-MMP ... [more ▼]

MT4-MMP (MMP17) is a glycosyl-phosphatidyl inositol-anchored membrane-type matrix metalloproteinase expressed at the cell surface of human breast cancer cells. In triple negative breast cancer, MT4-MMP promotes primary tumor growth and lung metastases. Recently, we demonstrated that EGFR activation and signaling are enhanced by MT4-MMP in a non-proteolytic dependent manner. While trafficking and internalization of EGFR was extensively investigated, little is known about MT4-MMP. Here, we investigated the dimerization, internalization and recycling dynamics of MT4-MMP and its mutated inactive form MT4-MMP-E249A. We demonstrate that MT4-MMP forms dimers and oligomers at the cell surface, a process that was not inhibited neither by broad-spectrum MMP inhibitors (GM6001 and BB94) nor TIMP-2. MT4-MMP is internalized in early endosomes from 10 minutes to 60 minutes. Once internalized, some amount of MT4-MMP is auto-degraded, whereas its inert form E249A was found intact. Large part of the internalized enzyme was recycled intact at the cell surface. By exploring its endocytosis, we found that MT4-MMP is internalized by the CLIC/GEEC pathway, a mechanism that differs from other MT-MMP members. Overall, we provided a new mechanistic insight on the regulatory mechanisms of MT4-MMP in human breast cancer cells. We also, highlighted unique features of MT4-MMP among membrane-associated MMPs, which may be useful for the design of novel therapeutic strategies for metastatic breast cancer. [less ▲]

Detailed reference viewed: 33 (20 ULg)
Full Text
See detailProduction of alumina foundry moulds by additive manufacturing for low and high melting points alloys prototypes
Bister, Geoffroy; Deschuyteneer, Dorian; Hautcoeur, Dominique et al

Poster (2015, October 26)

Detailed reference viewed: 18 (4 ULg)
Full Text
See detailInnovative semiconducting oxide materials reducing the energy footprint of buildings
Dewalque, Jennifer ULg; Maho, Anthony ULg; Spronck, Gilles ULg et al

Conference (2015, October 26)

In the current energy context, many efforts are devoted to the reduction of the energy footprint of buildings. To meet this challenge, the LCIS-GREENMAT laboratory developes a front edge research in the ... [more ▼]

In the current energy context, many efforts are devoted to the reduction of the energy footprint of buildings. To meet this challenge, the LCIS-GREENMAT laboratory developes a front edge research in the field of advanced materials associated to energy and environment, including structured materials for dye-sensitized solar cells (DSSCs) and electrochromic coatings. DSSCs have been reported by O’Regan and Grätzel in the early nineties as a very promising alternative to conventional photovoltaic silicon devices. Main benefits of these cells are their low cost as well as their mild manufacturing process. In most of the specific literature, DSSCs are made of TiO2 films prepared by doctor-blade or screen-printing of anatase nanoparticles paste. However, due to the random organization of the nanoparticles, pore accessibility by the dye and electrolyte could be incomplete. Moreover, some anatase crystallites could suffer from a lack of connectivity, leading to electron transfer issues. The strategy adopted by our group to improve photovoltaic efficiencies involves a templating-assisted process to prepare highly porous layers with well-ordered and accessible pores as well as improved crystallites connectivity. This talk especially focuses on the templating-assisted synthesis of TiO2 and ZnO semiconducting layers used as photoelectrode in DSSCs. Due to the surface area improvement as well as the perfect control of the pore organization and the pore size, the templating strategy is an effective solution to maximize the adsorption of active dye and the electrolyte infiltration inside the porous network. Besides, in the last few years, there has been increasing interest in electrochromic glazing due to its potential use as an energy-efficient component for buildings, as it could reduce considerably their CO2 emission by decreasing their energy consumption up to 30%. The crucial issues of such devices are the durability, the coloration efficiency and the reversibility upon coloration and bleaching of the electrochromic layers. In order to improve the performances of those electrochromic films, we have investigated a surfactant-assisted deposition process for WO3 layer and the insertion of lithium in the NiO layer. All films have been deposited on FTO glass substrates by ultrasonic spray pyrolysis (USP), which is a low-cost alternative to industrial vacuum processes for manufacturing high quality thin films. The presence of lithium ions in nickel oxide films has shown improved coloration efficiency compared to the undoped films. The higher active surface of surfactant-assisted tungsten oxide films has led to higher reversibility and coloration contrast. [less ▲]

Detailed reference viewed: 74 (7 ULg)
Peer Reviewed
See detailThe thickness of words : politique et biologie chez Donna Haraway
Caeymaex, Florence ULg

Conference (2015, October 26)

Detailed reference viewed: 6 (2 ULg)
Full Text
See detailEnquête, SF, politique. Comment nous avons croisé Haraway
Pieron, Julien ULg

Conference (2015, October 26)

Detailed reference viewed: 20 (2 ULg)
Full Text
Peer Reviewed
See detailEvaluation isocinétique de la fatigabilité musculaire du genou: qu'en est-il de la reproductibilité intra-dynamomètre et de la compatibilité inter-dynamomètre?
Paulus, Julien ULg; Krecke, Roland; Bosquet, Laurent et al

Poster (2015, October 26)

Abstract Certains aspects de l'isocinétisme, bien que considéré comme un gold standard de l'évaluation musculaire [1], restent à explorer: entre autre la reproductibilité intra-dynamomètre des index de ... [more ▼]

Abstract Certains aspects de l'isocinétisme, bien que considéré comme un gold standard de l'évaluation musculaire [1], restent à explorer: entre autre la reproductibilité intra-dynamomètre des index de fatigue (quotient des n dernières répétitions par les x premières par exemple) et des paramètres mesurés lors d'une épreuve de fatigabilité musculaire pour le genou mais également la compatibilité inter-dynamomètre de cette même épreuve de résistance à la fatigue. Après étude via à un test-retest, la reproductibilité des index de fatigue semble très insuffisante pour une utilisation clinique ou scientifique, au contraire des paramètres mesurés. De plus, après exploration via la réalisation du protocole sur trois modèles différents, il apparait que la reproductibilité insuffisante des fléchisseurs du genou ne permettrait pas de comparer les résultats obtenus sur différents dynamomètres. Introduction Les tests isocinétiques contribuent largement à l'évaluation de la performance musculaire et en sont considérés comme un gold standard [1]. Les tests de fatigabilité peuvent s'avérer complémentaires des épreuves courtes de force notamment pour évaluer un athlète sollicitant particulièrement la filière anaérobie lactique ou dans des contextes pathologiques spécifiques [2]. Bien que Bosquet et al. [3] aient démontré la reproductibilité d'un protocole de fatigabilité pour le genou, 30 flexions-extensions maximales à 180°.s-1 avec une amplitude de 100°, à notre connaissance, aucune étude, ayant pour objectif d'être exhaustive dans son analyse, n'a été menée sur la reproductibilité des paramètres mesurés (meilleure répétition, cumuls total et partiels) et index de fatigue (quotient des n dernières répétitions par les x premières, du cumul des répétitions par la meilleure,…) bien qu'ils soient proposés directement par les dynamomètres et/ou utilisés en clinique et dans la littérature lors de l'étude de la fatigabilité du genou [4]. Sont-ils suffisamment reproductibles pour que leur utilisation soit scientifiquement validée? La compatibilité des résultats d'une épreuve de fatigabilité du genou entre différents dynamomètres isocinétiques n'a également, à notre connaissance, pas été évaluée récemment, qui plus est sur plus de deux dynamomètres de marques différentes [5]. Est-il envisageable de comparer les résultats obtenus sur des dynamomètres de marques différentes et de généraliser les normes? Méthodes Pour tenter d'apporter un élément de réponse à la première question, dix-huit hommes sains, modérément actifs, ont réalisé trente extensions-flexions maximales du genou à trois occasions sur un Biodex System 3 Pro, en observant sept à dix jours de repos entre chaque session. Afin de compiler onze paramètres mesurés et de construire quarante-quatre index, le moment de force maximum (MFM) et le travail maximal (Wmax) de chaque répétition ont été enregistrés. La reproductibilité de chaque paramètre et index a été évaluée via leur ICC (2,1), SEM et MD respectifs. Pour évaluer la compatibilité inter-dynamomètre du Biodex System 3 Pro, du Con-Trex MJ PM-2 et du Cybex Humac CSMI, vingt-et-un sujets sains, modérément actifs, ont réalisé trente extensions-flexions maximales du genou à trois occasions, en observant six à dix jours de repos entre chaque session. Le MFM et le Wmax de chaque répétition ont été enregistrés. La compatibilité inter-dynamomètre deux-à-deux a été évaluée à l'aide des ICC (3,1), SEM et MD des paramètres mesurés.   Résultats En ce qui concerne la reproductibilité intra-dynamomètre, les valeurs d'ICC des paramètres mesurés pour les extenseurs du genou sont quasi-systématiquement supérieures à 0.8 tandis que celles pour les fléchisseurs oscillent entre 0.7 et 0.8. Les index de fatigue présentent quant à eux des ICC inférieurs à 0.7 et 0.5 respectivement pour les extenseurs et fléchisseurs. Les valeurs d'ICC ne diffèrent guère entre le MFM et le Wmax (que ce soit pour les extenseurs ou les fléchisseurs ou pour les paramètres mesurés et les index de fatigue). Pour le volet compatibilité inter-dynamomètre, les ICC des paramètres mesurés lors de l'épreuve de fatigabilité musculaire des extenseurs du genou sont très majoritairement supérieurs à 0.8, quelle que soit la paire de dynamomètres considérée. A contrario, les ICC de ces mêmes paramètres mesurés sont presque tous inférieurs à 0.7 pour les fléchisseurs. Les valeurs d'ICC ne diffèrent guère entre le MFM et le Wmax (que ce soit pour les extenseurs ou les fléchisseurs). Logiquement, la compatibilité inter-dynamométrique des index de fatigue n'a pas été étudiée puisque leur reproductibilité intra-dynamomètre a été démontrée comme insuffisante dans la première partie de notre étude. Discussion Considérant qu'un ICC supérieur à 0.8 soit acceptable pour une utilisation clinique [6], nous pouvons conclure que, compte tenu des valeurs obtenues sur notre population, aucun index de fatigue, bien que séduisant compte tenu de leur capacité théorique à caractériser la décroissance de la performance lors d'une épreuve de fatigabilité, ne semble présenter une reproductibilité intra-dynamométrique suffisante pour une utilisation clinique ou de recherche. Seuls les paramètres mesurés tels que la meilleure répétition, les cumuls total ou partiels apparaissent utilisables, en clinique et dans un contexte de recherche, en raison d'une reproductibilité intra-dynamométrique qui peut être qualifiée de (très) haute voire excellente [7, 8]. Des index de fatigue sont donc fréquemment utilisés alors que leur reproductibilité semble très largement insuffisante. La reproductibilité inter-dynamomètre des paramètres mesurés du protocole de fatigue défini par Bosquet et al. [3] permet leur utilisation clinique pour les extenseurs du genou mais est très insuffisante pour les fléchisseurs. Il apparaît donc nécessaire de réaliser les tests à chaque reprise sur le même dynamomètre dans le cadre de suivis longitudinaux ou des comparaisons transversales impliquant les fléchisseurs du genou. Ce manque de compatibilité inter-dynamomètre implique également que les normes soient spécifiques à chaque modèle de dynamomètre isocinétique. Conclusion Nos résultats indiquent que les index de fatigue ne peuvent être utilisés que ce soit dans un contexte clinique ou de recherche pour l'évaluation isocinétique du genou. Seuls les paramètres mesurés sont suffisamment reproductibles pour être employés. Le manque de compatibilité inter-dynamomètre pour les fléchisseurs du genou impliquent d'utiliser le même dynamomètre isocinétique lors de suivis longitudinaux ou de comparaisons transversales. [less ▲]

Detailed reference viewed: 86 (8 ULg)
See detailHPV infection, squamo-columnar junction and potential cancer prevention
Herfs, Michael ULg

Conference (2015, October 26)

Detailed reference viewed: 12 (1 ULg)
Full Text
Peer Reviewed
See detailHome Blood Pressure in Kidney Transplant Recipients (ktr)- Validity of different schedules of self-monitoring
Saint-Remy, Annie ULg; WEEKERS, Laurent ULg; BONVOISIN, Catherine ULg et al

Conference (2015, October 24)

HOME BLOOD PRESSURE IN KIDNEY TRANSPLANT RECIPIENTS (KTR)-Validity of different schedules of self-monitoring A. Saint-Remy, L. Weekers, C. Bonvoisin, P. Xhignesse, B.Dubois, JM. Krzesinski NEPHROLOGY ... [more ▼]

HOME BLOOD PRESSURE IN KIDNEY TRANSPLANT RECIPIENTS (KTR)-Validity of different schedules of self-monitoring A. Saint-Remy, L. Weekers, C. Bonvoisin, P. Xhignesse, B.Dubois, JM. Krzesinski NEPHROLOGY - CHU LIEGE AIM: Office blood pressure (OBP), 24-h ambulatory monitoring (ABPM) and home self- monitoring (HBP) allow assessing BP control in treated HT patients. For HBP, ESH guidelines recommend 7 days of measurements but that duration is questioned. The present study analyzed the agreement between daytime ABP and different schedules for HBP in 70 treated hypertensive KTR. METHOD: BP control defined by OBP <140/90 and daytime ABP or HBP <135/85 mmHg was tested in 70 KTR (mean age 56 ± 11 y; mean graft survival 7 ± 6.6 y). OBP and HBP were measured with an Omron M6 and 24-h ABPM with a Spacelabs 90207. HBP was measured on consecutive days (2 times in morning and 2 times at evening/day), the first day was discarded for the mean calculation. Agreement between daytime and HBP was studied when HBP was measured during 7, 5 or 3 days. RESULTS: BP was uncontrolled in 50% of the KTR based on OBP, in 61 % according to daytime ABP and even in 64 % with HBP. Sensitivity (Se) testing agreement between daytime ABP and HBP decreased progressively when number of days was shortened: the highest Se was observed for a 7 days duration with 1st day discarded (86 %). Specificity (Sp) fluctuated around 70 % and was the highest for a 5 (73 %) and 3 days schedule. However the 5 days schedule had higher Se (83 %) than the 3 days. Proportions of KTR correctly classified according to daytime ABP were 79 %, 79 % and 78 % with the 7, 5 or 3 days schedule, respectively. CONCLUSIONS: HBP, easier and less restricting method than 24h ABPM, is a good alternative to daytime ABPM as nearly 80 % of treated KTR were similarly classified. HBP recording period can be shortened to 5 days according to Se and Sp. A 3 days schedule seems more risky reducing the chance to identify masked HT due to a decreased drug adherence. [less ▲]

Detailed reference viewed: 67 (17 ULg)
Full Text
See detailCommotion cérébrale
Kaux, Jean-François ULg

Conference (2015, October 24)

Detailed reference viewed: 62 (10 ULg)
See detailSommeil et maladie neurodégénérative
Vandewalle, Gilles ULg

Conference (2015, October 23)

Detailed reference viewed: 16 (1 ULg)
Full Text
See detail2D Thermal model of powder injection laser cladding of high speed steels (HSS)
Hashemi, Seyedeh Neda ULg; Gilles, Gatën; Tomé Jardin, Ruben Antonio ULg et al

Conference (2015, October 23)

A two-dimensional multi-layer model for the transient temperature field analysis of Laser cladding process is developed. This model allows studying the thermal field of the multilayer deposits during ... [more ▼]

A two-dimensional multi-layer model for the transient temperature field analysis of Laser cladding process is developed. This model allows studying the thermal field of the multilayer deposits during their development by laser, and the "flat" substrate on which the deposition is carried. [less ▲]

Detailed reference viewed: 23 (12 ULg)
Peer Reviewed
See detailVideo Games in French Speaking Belgium : Practices, Discourses, and Legitimacy
Delbouille, Julie ULg

Conference (2015, October 23)

Longtemps décrié dans l’espace public et ignoré dans le champ de la recherche francophone, le jeu vidéo occupe aujourd’hui une place de choix dans les pratiques et les discours en Belgique et en France ... [more ▼]

Longtemps décrié dans l’espace public et ignoré dans le champ de la recherche francophone, le jeu vidéo occupe aujourd’hui une place de choix dans les pratiques et les discours en Belgique et en France. Dans le cadre de nos recherches, nous nous sommes intéressée à l’histoire de cette transformation progressive du statut du médium : nous avons pu mettre en évidence plusieurs processus de légitimation — qui touchent à la fois au jeu vidéo comme pratique et comme objet culturel, patrimonial et artistique — et qui affectent actuellement son image sur notre territoire. Fondée sur l’étude de ces différents processus, notre communication aura pour objectif de retracer l’évolution du statut du jeu vidéo en Belgique et en France au cours des dernières décennies, passant d’un objet commercial controversé à un produit culturel digne d’intérêt. [less ▲]

Detailed reference viewed: 10 (1 ULg)
Full Text
See detailLes constructions relatives du néo-égyptien
Sojic, Nathalie ULg

Conference (2015, October 23)

Detailed reference viewed: 12 (0 ULg)
See detailQuadratizations of pseudo-Boolean functions
Crama, Yves ULg

Conference (2015, October 23)

A pseudo-Boolean function is a real-valued function of 0-1 variables. Every pseudo-Boolean function can be represented by various analytical expressions, e.g., as a polynomial in its variables, or as a ... [more ▼]

A pseudo-Boolean function is a real-valued function of 0-1 variables. Every pseudo-Boolean function can be represented by various analytical expressions, e.g., as a polynomial in its variables, or as a polynomial in its variables and in their Boolean complements, or as a disjunctive form, or as pointwise minimum of a family of affine functions, and so forth. Motivated by the problem of minimizing pseudo-Boolean functions, we consider yet another class of representations. Namely, we say that g(x,y) is a quadratization of the pseudo-Boolean function f(x) if g(x,y) is a quadratic pseudo-Boolean function of x and of m auxiliary binary variables y such that, for all x, f(x) = min g(x,y), where the minimum is taken over all possible values of the y-variables. It can be shown that every pseudo-Boolean function has at least one, and usually, many quadratizations. In recent years, several authors have proposed to reduce the problem of minimizing an arbitrary function f(x) (say, expressed as a high-degree polynomial) to the (presumably easier) problem of minimizing one of its quadratizations. In this talk, we discuss the size of ``small'' quadratizations, that is, the number of auxiliary variables required in any quadratization. We provide lower and upper bounds on the number of auxiliary variables for the case of an arbitrary function f(x), as well as for the special case where f(x) is a symmetric function of its variables. [less ▲]

Detailed reference viewed: 28 (2 ULg)
Peer Reviewed
See detailComment concevoir notre rôle d'accompagnateur d'enseignants en formation continuée pour que les acquis issus de la recherche en didactique deviennent, au-delà de l’intérêt des seuls initiés, une préoccupation des enseignants.
Daro, Sabine; Graftiau, Marie Christine; Stouvenakers, Nadine et al

Conference (2015, October 23)

Une des priorités contemporaines en éducation scientifique est d’envisager une utilisation des acquis de la recherche en didactique des sciences pour la formation afin que la recherche qui parle des ... [more ▼]

Une des priorités contemporaines en éducation scientifique est d’envisager une utilisation des acquis de la recherche en didactique des sciences pour la formation afin que la recherche qui parle des pratiques d’enseignants parle également aux enseignants. Les formateurs ont, dans cette perspective, un rôle de passeurs à jouer. Il serait utile de définir les conditions nécessaires pour que les apports des chercheurs deviennent un éclairage usuel du praticien. Ces conditions sont relatives au mode d’accompagnement et à la posture du formateur; au contenu de la recherche elle-même; au parcours de l’enseignant; aux attentes prescrites… C’est par l’analyse d’exemples vécus d’intégration réussie, ou non, d’apports de la recherche dans la construction de réponses à des questions d’ordre didactique par des enseignants en formation, que nous tenterons de repérer des conditions favorables à une telle intégration. [less ▲]

Detailed reference viewed: 16 (0 ULg)
Full Text
See detailHydrology and gravimetry (Assessing groundwater mass balance: Keynote lecture: Hydrogeodesy in Membach and Rochefort)
Van Camp, Michel; Vanclooster, Marnik; Watlet, A. et al

Conference (2015, October 23)

For the 10 last years, terrestrial and satellite (GRACE) gravity measurements have reached such a precision that they can be of interest to better monitor underground water masses. First, we show that ... [more ▼]

For the 10 last years, terrestrial and satellite (GRACE) gravity measurements have reached such a precision that they can be of interest to better monitor underground water masses. First, we show that terrestrial measurements provide high-precision information about the time evolution of mass changes in the few kilometres square around the gravimeter. Then, examples of the possibilities and limitations of terrestrial measurements are given in Membach, close to Eupen, and in the Rochefort karst system. In Membach, we show that the evapotranspiration can be directly inferred from continuous gravity measurements: as water evaporates and transpires from terrestrial ecosystems, the mass distribution varies through the system, changing its gravity field at the level of, or smaller than 10-10 g per day. This corresponds to 2.0 mm of water over an area of 50 ha. The strength of this method is its ability to ensure a direct, traceable and continuous monitoring of actual ET for years at the mesoscale (~50 ha) with a precision of a few tenths of mm of water. In Rochefort, gravity measurements at the surface and in the cave allows separating the water contained in the unsaturated zone from the saturated one and therefore monitoring groundwater content changes that occur in the unsaturated zone only. [less ▲]

Detailed reference viewed: 83 (2 ULg)
Full Text
Peer Reviewed
See detailInternational Classification of Primary Care in a cross-lingual terminology portal (Poster)
Jamoulle, Marc ULg; Kuehlein, Thomas; Pizzanelli, Miguel et al

Poster (2015, October 23)

ICPC, reflecting the burden of family medicine, is available in the HeTOP cross-lingual terminology portal (URL: www.hetop.eu) in 19 languages, mostly European (e.g. Spanish, Portuguese) but also in ... [more ▼]

ICPC, reflecting the burden of family medicine, is available in the HeTOP cross-lingual terminology portal (URL: www.hetop.eu) in 19 languages, mostly European (e.g. Spanish, Portuguese) but also in Japanese or Mandarin. The HeTOP interface has been also translated in 10 languages by Wonca colleagues (including in Turkish, Vietnamese and Romanian). [less ▲]

Detailed reference viewed: 53 (17 ULg)
Peer Reviewed
See detailLe créateur amateur de jeux vidéo : entre l'auteur et l'assembleur
Hurel, Pierre-Yves ULg

Conference (2015, October 23)

Abstract en ligne : https://research.ncl.ac.uk/media/sites/researchwebsites/frenchmediaresearchgroup/HUREL%20abstract.pdf

Detailed reference viewed: 21 (5 ULg)
Full Text
Peer Reviewed
See detailCommunity based participatory research about the multiculturality of second generation migrants after 50 years of Moroccan and Turkish immigration . 50-50 : The “ elli – khemsin ” project
Tatli, Hülya; Laurent, Geoffroy; Henry, Anne Pascal et al

Poster (2015, October 23)

Key words : Family Practice / Community-Based Participatory Research / Intergenerational Relations / loyalty conflict Introduction “Would you consider yourself more Turkish or more Belgian”? To make a ... [more ▼]

Key words : Family Practice / Community-Based Participatory Research / Intergenerational Relations / loyalty conflict Introduction “Would you consider yourself more Turkish or more Belgian”? To make a choice between Belgium and Turkey is like making one between my mother and my father claims a Belgian-Turkish teenager. That reveals the deep feeling of the descendants of the Moroccan or Turkish immigration in Belgium we commemorate the 50th anniversary this year. When two objects of desire are in contradiction with each other, that may give rise to a loyalty conflict. And that is exactly what we are interested in: the loyalty feeling between parental culture and the one of the native country. This project aims to take interest in the fruits of the immigration and more particularly in the teenagers born of immigrant parents in Belgium by the realization of a video by whom it concerns first, with the help of professionals. How do these teenagers daily manage this far-out situation? The aim of this project is to illustrate these silent questionings. The realized video will be broadcasted in schools to allow other teenagers to identify with the characters and to open up the debate. Methods The non-profit association ETMS (Private health center Espace Temps) has signed a partnership declaration with the Regional Center of Immigration of Charleroi and the non-profit association Accompaniment of Teenagers in Open Custody (AJMO) to elaborate a participatory research in community health. Recruitment of participants, meetings with the teenagers, storylines writing, shooting, editing and presentation of the video to an interested audience were the following steps. Results A psychologist, a family doctor, a nurse practitioner, a cameraman, a social worker, an educator and six teenagers of Turkish, Moroccan or Algerian origin take part to the project that has lasted for one year. The video will be ready end 2015 and will allow to debate sensitive topics and the creation of a partnership with schools that are interested in using this tool for educational purposes. [less ▲]

Detailed reference viewed: 154 (4 ULg)
Full Text
See detailPour une approche poétique du détournement de jeux vidéo : deux obstacles théoriques
Barnabé, Fanny ULg

Poster (2015, October 23)

Cette recherche prend pour objet les différentes formes de détournement du jeu vidéo, avec pour particularité de les étudier, non pas d’un point de vue sociologique, mais sous un angle formel. La ... [more ▼]

Cette recherche prend pour objet les différentes formes de détournement du jeu vidéo, avec pour particularité de les étudier, non pas d’un point de vue sociologique, mais sous un angle formel. La réception créative qu’est le détournement est donc abordée à travers les « traces d’usage » observables dans les œuvres produites, et ce, dans le but de mesurer et de caractériser l’écart que ces textes « au second degré » construisent par rapport à une pratique consensuelle du jeu. L’objectif final est d’ébaucher une poétique du détournement vidéoludique. [less ▲]

Detailed reference viewed: 67 (6 ULg)
Full Text
Peer Reviewed
See detailNeonatal brain injury : pathophysiology and current therapeutic options
VIELLEVOYE, Renaud ULg

Conference (2015, October 23)

Perinatal brain injury is a major contributor to neonatal morbidity and mortality and is a common cause of disability with devastating impact on individuals and families. The mechanisms involved in the ... [more ▼]

Perinatal brain injury is a major contributor to neonatal morbidity and mortality and is a common cause of disability with devastating impact on individuals and families. The mechanisms involved in the genesis of brain lesions depend of the the gestational age at which brain development is altered. In the term infant, the most common pathology implicated in brain damage is hypoxic-ischemic encephalopathy (HIE). HIE is the consequence of an excitotoxic cascade leading to cortical and/or basal ganglia lesions. Therapeutic hypothermia induced in the 6 hours following HIE reduces the risk of death or major neurodevelopmental disability in the neonate with moderate or severe encephalopathy and is the only neuroprotective treatment available in clinical practice. Research is now being focused on other promising strategies such as xenon, allopurinol, N-acetyl cystein, melatonin, anticonvulsant, erythropoietin or stem cell transplantation. In the preterm infant, diffuse white matter injury (dWMI) is the main pathological condition associated with neurological impairment. Based on experimental models, pathophysiological mechanisms of dWMI potentially include infection/inflammation, hypoxia-ischemia and oxidative stress. Experimental studies suggest a sensitizing effect of systemic inflammation that makes the perinatal brain more vulnerable to further insults. Antenatal magnesium sulfate therapy given to women at risk of preterm birth substantially reduced the risk of motor disorders in childhood but is unfortunately unable to reduce long term cognitive impairment or behavioural disorders. Antenatal steroids and caffeine therapy for apnea of prematurity are two other treatments with positive impact on neurodevelopment. Randomized controlled trials studying erythropoietin or melatonin are currently under process. Finally, research performed at the University of Liege suggests that Estetrol (E4), an estrogen synthetized exclusively by the human foetus, has neuroprotective properties in animal models of HIE as well as in inflammatory-induced dWMI. [less ▲]

Detailed reference viewed: 46 (0 ULg)
Peer Reviewed
See detail“Lambertus pictor” in the Saint Denis church accounts of 1533: new developments
Joly, Emmanuel ULg

Conference (2015, October 22)

The State archives in Liège preserve some of the 16th century “fabrique“ accounts of the Saint Denis collegiate church of Liège. Among them, accounts of the year 1533 drew the attention of Jean Yernaux in ... [more ▼]

The State archives in Liège preserve some of the 16th century “fabrique“ accounts of the Saint Denis collegiate church of Liège. Among them, accounts of the year 1533 drew the attention of Jean Yernaux in his 1958 study about Lambert Lombard. Indeed he found what he thought to be the proof of the Liège Renaissance Master’s intervention in the painting of the Saint Denis Altarpiece panels, before giving up the attribution in 1970. Since then, these two mentions have been used to illustrate either the involvement of Lombard or of another painter named “Lambert” in the painting of the panels. But looking closer at the original document, it is obvious that Yernaux committed huge mistakes in the transcript of these mentions. Not only was he wrong about the sums paid to the artist but also about the work mentioned in this account. In order to understand this document fully and correctly, it is therefore essential to propose a transcription from which new interpretations can be generated. This new understanding can then lead to further contextualization of the mentions. These accounts need to be looked at in close relationship with the rest of the document. This would shed new light on the writer’s habits, especially when it comes to designate individuals. The amount of money given to the painter Lambert also needs to be assessed. Comparisons to other payments of the same period conserved in the archives of the Saint Denis church and of other churches in or around Liège are going to be unveiled and investigated. This will give interesting clues to understand better the extent of the work done by the artist as well as his social status. [less ▲]

Detailed reference viewed: 20 (1 ULg)
Peer Reviewed
See detailEntre libertés et contraintes, entre pro- et réactivité. Le cas d'un Centre de formation initiale des enseignants en Fédération Wallonie-Bruxelles
Beckers, Jacqueline ULg; Simons, Germain ULg

Conference (2015, October 22)

Dans cette contribution, nous analyserons l'évolution des enjeux et priorités que s'est progressivement donné le Centre interfacultaire de formation des enseignants (Cifen) de l'Université de Liège depuis ... [more ▼]

Dans cette contribution, nous analyserons l'évolution des enjeux et priorités que s'est progressivement donné le Centre interfacultaire de formation des enseignants (Cifen) de l'Université de Liège depuis sa création officielle en 1995, et nous nous interrogerons sur leur pertinence. Comment prendre la mesure des changements effectivement mis en place, apprécier leur pertinence, réguler leurs effets, éviter l'essoufflement des partenaires du système ? Telles sont quelques unes des questions qui baliseront notre contribution. [less ▲]

Detailed reference viewed: 53 (7 ULg)
Peer Reviewed
See detailLire les textes informatifs au début de l'enseignement secondaire : influence d'un dispositif didactique sur les apprentissages des élèves
De Croix, Séverine ULg; Penneman, Jessica

Conference (2015, October 22)

Les spécificités et les difficultés de la « lecture pour apprendre » au début du secondaire sont à l’origine du projet de recherche longitudinale de type quasi-expérimental dans lequel s’inscrit notre ... [more ▼]

Les spécificités et les difficultés de la « lecture pour apprendre » au début du secondaire sont à l’origine du projet de recherche longitudinale de type quasi-expérimental dans lequel s’inscrit notre contribution. « Lirécrire pour apprendre » a pour principaux objectifs d’expérimenter, durant deux années successives (2014-2016), un programme didactique centré sur le développement de la compréhension et de la production des textes à visée informative-explicative ; de tester la valeur de cet outil sur un large échantillon d’élèves du premier degré de l’enseignement secondaire et d’évaluer les conditions d’implémentation et de mise en œuvre de l’outil les plus favorables au changement de pratiques pédagogiques et au maintien de l’innovation. Dans le cadre de cette contribution, à l’issue de la première année de l’expérimentation, nous évoquons quelques éléments de définition et de modélisation préalables (première partie), quelques-uns des constats posés en amont de la conception du programme (deuxième partie) ainsi que le design de la recherche et les caractéristiques du dispositif didactique (troisième partie). Ces éléments constituent le cadre de référence dans lequel s’inscrit l’étude développée dans la quatrième partie du texte, relative aux premiers résultats quantitatifs de l’expérimentation du dispositif. Les données recueillies auprès d’un échantillon de 1690 élèves (scores bruts), limitées aux apprentissages en lecture, sont examinées à la lumière de la question suivante : les élèves peuvent-ils, sous l’influence d’un outil structuré, progresser dans leur capacité à comprendre un texte ou un dossier de documents informatifs-explicatifs et à rendre compte de leur compréhension ? Seule l’évolution des performances des élèves est ici étudiée. Deux autres variables prépondérantes, qui influencent les résultats des élèves, à savoir l’appropriation de l’instrument didactique par les enseignants ainsi que les pratiques effectives d’enseignement, seront analysées ultérieurement, à la lumière de l’ensemble des données de la recherche. [less ▲]

Detailed reference viewed: 26 (1 ULg)
Full Text
See detailL’empreinte environnementale des pierres ornementales? Pour qui, pourquoi, comment?
Belboom, Sandra ULg; Renzoni, Roberto ULg; Tourneur, Francis ULg et al

Conference (2015, October 22)

Dans les matériaux de construction, la notion d’environnement et d’empreinte des produits devient de plus en plus importante que ce soit dans un cadre législatif ou comme objet de marketing. Dans ce ... [more ▼]

Dans les matériaux de construction, la notion d’environnement et d’empreinte des produits devient de plus en plus importante que ce soit dans un cadre législatif ou comme objet de marketing. Dans ce contexte, des études environnementales ont été réalisées sur divers produits belges en pierre bleue (dalles, bordures, marches) ainsi qu’en grès (pavés). Ces études ont été menées en utilisant la méthodologie de l’Analyse du Cycle de Vie (ACV) et ont permis de mettre en évidence les étapes prépondérantes de leur production dans une optique d’écoconception ainsi que de les comparer à d’autres produits sur le marché tels que leurs concurrents asiatiques. Les frontières du système comprennent les étapes depuis l’extraction des matières premières, en passant par la production des produits finis ainsi que leur transport sur chantier situé en Belgique. Cette présentation reprend le pourquoi et le comment d’une Analyse du Cycle de Vie, les différentes étapes nécessaires à l’application de l’ACV aux produits en pierre belge ainsi que les principaux résultats. Cette présentation permettra la mise en évidence de l’intérêt de l’ACV et des fiches de déclaration environnementale qui y sont associées ainsi que les perspectives qui peuvent en découler dans le domaine des matériaux et plus précisément pour les matières minérales. [less ▲]

Detailed reference viewed: 24 (1 ULg)
Full Text
See detailLa temporalité dans les SIG
Hallot, Pierre ULg

Conference (2015, October 22)

La gestion de la temporalité dans les SIG (système d'information géographique). Applications actuelles, modélisation et vision future.

Detailed reference viewed: 7 (0 ULg)
Full Text
Peer Reviewed
See detailConcept identification and context analysis of the Wonca Europe 2015 book by instance-based categorization of general practice activities
Jamoulle, Marc ULg; Steylaert, Carl

Poster (2015, October 22)

Context: Family physicians are large producers of knowledge. The site of Wonca Europe provides access to almost 20,000 abstracts produced by family physicians since 1995 (from Europe) and 1998 (from World ... [more ▼]

Context: Family physicians are large producers of knowledge. The site of Wonca Europe provides access to almost 20,000 abstracts produced by family physicians since 1995 (from Europe) and 1998 (from World Conferences). On the occasion of 20 years of Wonca Europe, an editorial committee selected 100 of the best abstracts and has asked each author (or a substitute) to make a chapter for the Wonca Book published in 2015 at the Wonca Europe congress. The content analysis of medical texts is generally achieved by the use of MeSH. To fill gaps in MeSH, a specific family medicine classification has been developed under the name Core Content Classification of General Practice / Family Medicine (3CGP). A combination of ICPC + Q-Codes (new tool for non-clinical items) provides just fewer than 900 concepts for analyzing the contents of specific texts to family medicine. Method: The 100 chapters of the Wonca Book 2015 were analyzed using 3CGP by a single observer not involved in the editorial committee of the book. Every text has been carefully read and a maximum of two concepts by chapter were reported in an Excel spreadsheet. Result: 150 codes were used of which 143 from the classification of non-clinical items Q-codes and 7 coming from ICPC. Among the topics discussed by 143 authors and identified by Q-codes, 35 relate to knowledge management which includes family medicine education, 29 codes concern research and development, 29 doctor's specific area, 24 patients’ issues, 11 relate to the structure and 8 deal with ethics. Discussion: Despite limitations (unique observer – not validated tools) the study reveals striking facts. It is noted that the editorial board has favored themes that affect the structure and organization of knowledge of the profession. Clinical items or affecting directly the patients are very poorly represented. More about 3CGP on http://docpatient.net/3CGP The chapter of the book are also used as source of knowledge in the Q-Codes content study (ongoing) available on www.hetop.eu (inscription needed) [less ▲]

Detailed reference viewed: 94 (12 ULg)