References of "Scientific congresses and symposiums"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailCommenter une vidéo de classe - Un marqueur d’apprentissage pédagogique ?
Jérôme, Françoise ULg; Delfosse, Catherine ULg; Detroz, Pascal ULg et al

Conference (2016, June)

Cette proposition de communication porte sur une tentative d’appréhender l’évolution d’enseignants en formation pédagogique par le biais d’une analyse comparative de leurs commentaires d’une séquence ... [more ▼]

Cette proposition de communication porte sur une tentative d’appréhender l’évolution d’enseignants en formation pédagogique par le biais d’une analyse comparative de leurs commentaires d’une séquence vidéo présentée en début et en fin de parcours. La vidéo comme support privilégié de l’analyse critique des pratiques enseignantes à des fins de développement professionnel fait déjà l’objet d’une abondante littérature. Nous avons voulu tester le potentiel de cette approche dans le cadre du cours « Description et analyse critique de pratiques d’enseignement et d’évaluation », commun aux formations CAPAES et Formasup organisées à l’Université de Liège. Le cours aborde les thématiques pédagogiques jugées incontournables pour procéder à une planification de qualité d’un dispositif d’enseignement. Les thématiques sont traitées par le biais des représentations spontanées des enseignants-participants et grâce à divers modèles et théories. Quinze enseignants observent et commentent la même séquence vidéo en début (septembre 2015) et en fin de cours (décembre 2015). La première série de commentaires représente leur appréhension spontanée d’une situation de classe « criblée » de maladresses pédagogiques en mobilisant leurs savoirs antérieurs au cours tandis que la deuxième série devrait mobiliser également des savoirs acquis pendant le cours. Il s’agit là d’une hypothèse à vérifier. La communication au congrès AIPU présentera les résultats de l’analyse comparative des écrits des enseignants. Nous pouvons déjà formuler quelques constats relatifs aux commentaires rédigés au temps 1. Les enseignants expriment en moyenne trois à cinq avis critiques pertinents concernant les attitudes de l’enseignant observé. Les élèves sont également critiqués mais des liens de cause à effet entre les comportements respectifs de l’enseignant et des élèves sont rarement établis. Aucune référence explicite à des théories pédagogiques n’est faite et peu de pistes de régulation sont proposées. Les enseignants mentionnent des points communs entre leurs expériences et la situation observée ou rejettent toute identification. Berliner, D.C. (2004). Describing the Behavior and Documenting the Accomplishments of Expert Teachers. Bulletin of Science, Technology & Society, Vol. 24, No. 3, June 2004, 200-212. Calandra, B., Brantley-Dias, L., Lee, J.K. & Fox, D.L. (2009). Using Video Editing to Cultivate Novice Teachers' Practice. Journal of Research on Technology in Education, 42(1), 73-94. Daujeard, C., Surrel, P. (2011). L'ABC des profs. 123 clés pour faire cours. Collection : Ressources Formation. Les clefs du quotidien. Fadde, P., & Sullivan, P. (2013). Using interactive video to develop preservice teachers’ classroom awareness. Contemporary Issues in Technology and Teacher Education, 13(2). Retrieved from http://www.citejournal.org/vol13/iss2/general/article1.cfm Missaoui, O.E.K. (2013). La vidéo pour la formation continue des enseignants. Thot Cursus. Formation et culture numérique. http://cursus.edu/article/19440/video-pour-formation-continue-des-enseignants/#.VkyHhL9m0dc Meyer, F. (2012). Les vidéos d’exemples de pratique pour susciter le changement. Revue internationale de pédagogie de l’enseignement supérieur, 28-2 | 2012. [less ▲]

Detailed reference viewed: 45 (3 ULg)
Full Text
Peer Reviewed
See detailPhysiological response to training and competition in 1-star to 4-star eventing horses
KIRSCH, Katharina; Düe, Michael; Holzhausen, Hermann et al

Poster (2016, June)

Abstract 034 – Physiological response to training and competition in 1-star to 4-star eventing horses – Post Review Authors’ names and affiliations Author 1: Katharina Kirsch* (German Olympic Committee ... [more ▼]

Abstract 034 – Physiological response to training and competition in 1-star to 4-star eventing horses – Post Review Authors’ names and affiliations Author 1: Katharina Kirsch* (German Olympic Committee for Equestrian Sports, Germany and PhD Student, University of Liège, Belgium) Author 2: Michael Düe (German Equestrian Federation, Germany) Author 3: Hermann Holzhausen (Olympic Support Center Westphalia – Warendorf, Germany) Author 4: Stephanie Horstmann (German Olympic Committee for Equestrian Sports, Germany) Author 5: Markus Scharmann (German Equestrian Federation, Germany) Author 6: Charlotte Sandersen (University of Liège, Belgium) *Address of the presenting author: Katharina Kirsch, Freiherr-von-Langen-Str. 15, 48231 Warendorf, GERMANY E-mail of the presenting author: kkirsch@fn-dokr.de Abstract Physiological response to training and competition in 1-star to 4-star eventing horses To prepare horses for the requirements of international eventing competitions and simultaneously maintain their health and welfare, appropriate training is mandatory. Specific training and competition management necessitates information about exercise intensities and fitness, which are usually assessed by standardized exercise tests. Our purpose was to identify parameters whose measurement can be largely integrated in the daily training and competition routine and which provide information on fitness and adequacy of applied training. Further, we evaluated training and competition intensities of eventing horses, based on data generated by a proportionally large group of horses over several years. Data of 187 horses from 1-star to 4-star level over a time period of six years were collected during 410 training sessions and 916 Cross Country rides, including measurement of covered distance and speed (GPS, Fidelak EquiPILOT), continuously recording of heart rate (HR) (Polar T52H) and determination of blood lactate concentrations (BLC) (Dr. Lange photometer). Characteristics of the track, altitude profile, ambient temperature and humidity were recorded at each session. The results of the one-way ANOVA indicated a significant effect of competition level on HR (F3,373=23.29; p<0.001) and BLC (F3,763=46.12; p<0.001). Under competition conditions, HR and BLC increased from 1-star to 3-star level (1-star: HR=194±9 bpm, BLC=7.7±5.6 mmol/l; 2-star: HR=198±9 bpm, BLC=9.6±6.2 mmol/l; 3-star: HR=205±10, BLC=15.6±9.8 mmol/l; 4-star: HR=207±2 bpm, BLC=12.4±9.3 mmol/l), while under training conditions, they decreased with increasing competition level (1-star: HR=184±29 bpm; BLC=18.9±11.1 mmol/l; 2-star: HR=182±19 bpm; BLC=12.1±9.0; 3-star: HR=174±25 bpm; BLC=6.9±7.1 mmol/l; 4-star: HR=161±24 bpm, BLC=4.0±5.6 mmol/l). On 1-/2-star level, BLCs after training exceeded those after competition. Reverse applied for 3-/4-star level. On 3-star level, the percentage of HRs above 200 bpm during Cross Country was considerably greater than on lower levels (1-star: 33%; 2-star: 54%; 3-star: 94%). The competition format (CCI/CIC) had no significant effect on the progress of HR. The altitude profile however, had a significant effect on HR (F1,201=26.72, p<0.001) and BLC (F1,89=25.56; p<0.001). Evaluation of physiological response to training and competition through implementation of measurement technology allows an assessment of the different impacts on exercise intensities and should be more commonly used to assess appropriateness of training and competition management in eventing horses. It should be further investigated if the detected discrepancies in the response to training and competition between levels are a result of different fitness ore varying training strategies. LP To meet the demands of international Eventing competitions, a systematic training of horses is necessary. Close monitoring of physiological response to exercise during training and competition can help to improve training. Keywords Exercise physiology; training; eventing; heart rate; lactate. [less ▲]

Detailed reference viewed: 27 (8 ULg)
Peer Reviewed
See detailSharing a Car? Yuck, No! An Investigation of Consumer Contamination in Access-Based Services
Hazee, Simon ULg; Delcourt, Cécile ULg; Van Vaerenbergh, Yves

Conference (2016, June)

Detailed reference viewed: 19 (1 ULg)
Full Text
Peer Reviewed
See detailSpeech characteristic of French-speaking children with Dysarthria: Pilot study
MacLeod, andrea; Maillart, Christelle ULg; Ancelle, J. et al

Poster (2016, June)

Detailed reference viewed: 44 (2 ULg)
See detailADAMTS3 activity is mandatory for embryonic lymphangiogenesis and regulates placental angiogenesis.
Dupont, Laura ULg; Janssen, Lauriane; Bekhouche, Mourad et al

Conference (2016, June)

Detailed reference viewed: 19 (4 ULg)
Full Text
See detailDes mini-jeux pour apprendre - Retour d'expérience dans un cours de chimie à l'université
le Maire, Nathalie ULg; Colaux, Catherine ULg; Fauconnier, Marie-Laure ULg et al

Conference (2016, June)

Dans le champ éducatif, les jeux ont régulièrement fait l’objet de réflexions et d’expérimentations visant à en exploiter leur potentiel au service de la compréhension, la motivation, la créativité ... [more ▼]

Dans le champ éducatif, les jeux ont régulièrement fait l’objet de réflexions et d’expérimentations visant à en exploiter leur potentiel au service de la compréhension, la motivation, la créativité, l’esprit critique etc. des étudiants. De la tortue LOGO aux jeux de simulation, l’exploitation du jeu dans l’enseignement a revêtu de multiples formes. Récemment la notion de gamification a enrichi cette ligne de recherche sur le jeu. Le concept de « gamification » désigne l’application d’éléments, de mécanismes, de processus ludiques à des situations, des contextes, des visées non ludiques. En la matière, Candy Crush, Farm Ville, Clash of Clans, etc. sont autant de jeux commerciaux qui remportent un grand succès aujourd’hui et peuvent fournir une source d’inspiration pour la création de mini-jeux pédagogiques. La présente communication relate la mise en place de « World of Chemistry », un parcours ludique mis en place de septembre à décembre 2015 en complément des supports de cours traditionnels. Ce parcours était composé de quatre mini-jeux portant sur des savoirs et des compétences identifiés comme difficiles en chimie et conçus explicitement pour incorporer des éléments de gamification issus de mini-jeux commerciaux variés. Cette expérimentation avait pour objectif d’étudier dans quelle mesure et à quelles conditions ces mini-jeux étaient susceptibles d’augmenter la fréquentation de la matière de chimie par les étudiants. A la lumière de l’usage fait des mini-jeux par 159 étudiants de première année d’université et de questionnaires de feedback qui leur ont été adressés, la communication évaluera la valeur de cette initiative pédagogique. [less ▲]

Detailed reference viewed: 97 (16 ULg)
See detailPolyphosphoesters as a new platform for the design of particulate drug delivery systems
Vanslambrouck, Stéphanie; Ergul Yilmaz, Zeynep; Debuigne, Antoine ULg et al

Conference (2016, June)

Thanks to their biocompatibility and degradability properties, polyphosphates are appealing polymers for biomedical applications. In contrast to aliphatic polyesters, such as poly(ε-caprolactone) and poly ... [more ▼]

Thanks to their biocompatibility and degradability properties, polyphosphates are appealing polymers for biomedical applications. In contrast to aliphatic polyesters, such as poly(ε-caprolactone) and poly(lactide), the pentavalency of the phosphorus atom allows the easy modification of the polyphosphate properties by simply adjusting the nature, the length and the functionality of the polyphosphate pendant groups. Therefore, macromolecular engineering of polyphosphoesters was applied to design well-defined architectures and functionalities adapted to drug nanocarriers. In a first approach, amphiphilic block copolymers are synthesized by organo-catalyzed ring-opening polymerization process for the synthesis of a range of PEO-b-polyphosphate bearing various pendant groups. Post-polymerization thiol-ene click reactions preformed on PEO-b-polyphosphate copolymers was also investigated to improve the hydrophobicity of the polyphosphate. The self-assembly of these PEO-b-polyphosphate copolymers into micelles was investigated, particularly, the effect of the nature of the polyphosphate pendant groups (i) on the micelles characteristics, (ii) on the encapsulation of a poorly soluble drug and (iii) on the drug release profile. The toxicity of the different amphiphilic block copolymers was also evaluated by live/dead cell viability assays. In a second approach, double hydrophilic copolymers based on polyphosphoesters have been used as templating agent for the synthesis of calcium carbonate particles. Indeed, the use of such microparticles is becoming more and more attractive in many fields especially for biomedical applications for which fine tuning of size, morphology and crystalline form of CaCO3 particles is crucial. Although some structuring compounds, like hyaluronic acid, give satisfying results, the control of the particle structure still has to be improved. To this end, we evaluated the CaCO3 structuring capacity of the well-defined double hydrophilic block copolymers composed of poly(ethylene oxide) and of a polyphosphoester segment with affinity for calcium like poly(phosphotriester)s bearing pendant carboxylic acids or poly(phosphodiester)s with a negatively charged oxygen atom on each repeating monomer unit. [less ▲]

Detailed reference viewed: 157 (12 ULg)
Full Text
Peer Reviewed
See detailCan serum progesterone be used to decide altrenogest supplementation discontinuation in problem pregnancies in mares?
Parrilla Hernandez, Sonia ULg; Delahaut, Philippe; Ponthier, Jérôme ULg et al

Poster (2016, June)

Use of oral altrenogest as exogenous progesterone (P4) in mares in an effort to maintain high-risk pregnancies is a widespread practice. Treatment is sometimes initiated as early as 2 days after ovulation ... [more ▼]

Use of oral altrenogest as exogenous progesterone (P4) in mares in an effort to maintain high-risk pregnancies is a widespread practice. Treatment is sometimes initiated as early as 2 days after ovulation. Timing when it can safely be stopped is frequently uncertain and therefore, supplementation is often continued until 100-120 days, when the placental secretion of progestagens has taken over. The aim of this study was to determine if altrenogest interfered with progesterone assay and if timing of altrenogest administration discontinuation could be based on the blood concentration of P4. Data were obtained from 7 healthy standard breed mares in seasonal anoestrus and in dioestrus. Mares were considered anoestrus when no follicles larger than 15 mm in diameter or corpus luteum (CL) were found at 2 consequent ultrasound examinations 7 days apart. They were confirmed dioestrus based on an observed ovulation and the presence of a CL 2 days after. Mares were treated with 0.044 mg/kg of altrenogest (Regumate®, Intervet, Boxmeer, Netherlands) orally once per day during 12 days beginning at any time for the anestrus group and at day 2 after ovulation for the dioestrus group. Blood was collected at day 0, 6, 12, 18 right before altrenogest administration and the serum was stored at -20°C until analysis. P4 concentration was obtained by radioimmunoassay and altrenogest by liquid chromatography-mass spectrometry. Differences in P4 and in altrenogest concentrations between different sampling days were determined by Friedman non parametric test. Concentrations of altrenogest before treatment were almost not detectable (negative control). At day 6, they were significantly higher (p<0.05), and were back to basal, almost not detectable values at day 18, in both groups. P4 concentration was basal with values < 0.4 ng/ml all through the experiment in the anoestrus group. In the dioestrus group, P4 concentration was variable from one mare to another, but it was significantly higher in mid-dioestrus (day 6) as compared to the time of the impending next oestrus (day12). No cross-reaction between P4 and altrenogest assays was observed as illustrated by the fact that concentration of P4 during anoestrus remained basal with or without supplementation. Despite the treatment, the variation of P4 over time was as expected in both groups. Altrenogest was no longer detectable 6 days after the last administration. Further studies with larger numbers and sampling in dioestrus to compare P4 levels in treated and untreated mares to investigate the potential effect of altrenogest on endogenous P4 production by the CL are needed. However, our experiment shows that P4 levels assayed by RIA can be trusted to evaluate if the secondary CL’s have become functional and can thus maintain the pregnancy while oral altrenogest supplementation is discontinued. [less ▲]

Detailed reference viewed: 17 (4 ULg)
Peer Reviewed
See detailUnderstanding Usage Behaviour in a Peer-to-Peer Task Community
Deliège, Fanny ULg; Ates, Zelal ULg; Benoit, Sabine et al

Conference (2016, June)

Detailed reference viewed: 29 (4 ULg)
Full Text
Peer Reviewed
See detailDevelopment of improved preservation techniques for cyanobacterial and diatom strains in the BCCM collections
Crahay, Charlotte ULg; Chepurnova, Olga; Day, John G et al

Poster (2016, June)

Detailed reference viewed: 22 (1 ULg)
Full Text
See detailSome results about diametral dimensions
Demeulenaere, Loïc ULg

Poster (2016, June)

The diametral dimension is an important topological invariant, especially in the context of Köthe sequence spaces. This poster presents some results concerning the equality of the diametral dimension with ... [more ▼]

The diametral dimension is an important topological invariant, especially in the context of Köthe sequence spaces. This poster presents some results concerning the equality of the diametral dimension with one of its variants. It is based on a joint work with Françoise Bastin, Leonhard Frerick, and Jochen Wengenroth. Firstly, it gives sufficient conditions to have the equality between the two diametral dimensions for a Fréchet space. Secondly, it provides some examples of spaces verifying these conditions. Finally, it gives a family of Schwartz - or even nuclear - (non metrizable) locally convex spaces for which the two diametral dimensions are different. [less ▲]

Detailed reference viewed: 26 (18 ULg)
Full Text
Peer Reviewed
See detailFormation collective et individualisée à la planification pédagogique : Quels résultats par rapport à la rédaction progressive d’un plan de cours ?
Jérôme, Françoise ULg; Delfosse, Catherine ULg; Detroz, Pascal ULg et al

Conference (2016, June)

Cette proposition de communication porte sur le cours « Description et analyse critique de pratiques d’enseignement et d’évaluation », commun aux formations CAPAES et Formasup organisées à l’Université de ... [more ▼]

Cette proposition de communication porte sur le cours « Description et analyse critique de pratiques d’enseignement et d’évaluation », commun aux formations CAPAES et Formasup organisées à l’Université de Liège. Le cours aborde les thématiques pédagogiques jugées incontournables pour la planification d’un dispositif d’enseignement. Les thématiques sont traitées par le biais des représentations spontanées des enseignants-participants et grâce à divers modèles et théories. Leur appropriation est évaluée grâce à la rédaction d’un plan de cours qui décrit et justifie théoriquement le dispositif créé par l’enseignant. La rédaction du plan de cours se déroule en trois temps. D’abord, chaque enseignant fournit une version spontanée rédigée en autonomie. Cette version correspond souvent à la fiche signalétique imposée par la Haute Ecole. Ensuite, un canevas et des consignes de rédaction sont communiqués. Les enseignants soumettent une version retravaillée de leur plan de cours pour évaluation formative. Ils reçoivent alors des commentaires individualisés et collectifs leur permettant de finaliser leur production pour l’évaluation certificative. Afin d’observer comment les enseignants exploitent les ressources mises à leur disposition, nous avons analysé, à l’aide de critères préétablis, les trois versions du plan de cours de huit enseignants inscrits à la formation en 2014-2015. Notre communication portera sur cette analyse et les constats qui en résultent concernant l’efficacité de notre approche. Nous pouvons déjà affirmer que chaque enseignant progresse dans la rédaction des objectifs, méthodes et évaluations associés à son cours. Les modèles pédagogiques choisis pour structurer ces rubriques contribuent à clarifier le projet pédagogique et à en renforcer la cohérence. L’étape de l’évaluation formative est décisive car elle permet d’identifier les faiblesses et de les mettre en relation avec les thématiques abordées en formation. Les rubriques jugées insatisfaisantes sont alors revues par l’enseignant et le passage à un niveau de qualité supérieur est presque toujours garanti. Berthiaume D. & Rege Colet N. (2013). La pédagogie de l’enseignement supérieur : repères théoriques et applications pratiques. Peter Lang (Bern). Leduc L. (2013). Rédiger des plans de cours. De la théorie à la pratique. De Boeck Supérieur (Bruxelles). Prégent R ., Bernard H. & Kozanitis A. (2009). Enseigner à l’université dans une approche-programme. Guide à l’intention des nouveaux professeurs et chargés de cours. Presses internationales Polytechnique (Québec). Svinicki M. & McKeachie W. J. (2011). McKeachie’s Teaching Tips. Strategies, Research, and Theory for College and University Teachers. Wadsworth (Belmont, USA), 13th edition. [less ▲]

Detailed reference viewed: 96 (1 ULg)
Full Text
Peer Reviewed
See detailA Gaussian mixture approach to model stochastic processes in power systems
Gemine, Quentin ULg; Cornélusse, Bertrand ULg; Glavic, Mevludin ULg et al

in Proceedings of the 19th Power Systems Computation Conference (PSCC'16) (2016, June)

Probabilistic methods are emerging for operating electrical networks, driven by the integration of renewable generation. We present an algorithm that models a stochastic process as a Markov process using ... [more ▼]

Probabilistic methods are emerging for operating electrical networks, driven by the integration of renewable generation. We present an algorithm that models a stochastic process as a Markov process using a multivariate Gaussian Mixture Model, as well as a model selection technique to search for the adequate Markov order and number of components. The main motivation is to sample future trajectories of these processes from their last available observations (i.e. measurements). An accurate model that can generate these synthetic trajectories is critical for applications such as security analysis or decision making based on lookahead models. The proposed approach is evaluated in a lookahead security analysis framework, i.e. by estimating the probability of future system states to respect operational constraints. The evaluation is performed using a 33-bus distribution test system, for power consumption and wind speed processes. Empirical results show that the GMM approach slightly outperforms an ARMA approach. [less ▲]

Detailed reference viewed: 154 (42 ULg)
Peer Reviewed
See detailCartels in the EU: who appeals and who wins?
Gautier, Axel ULg

Conference (2016, June)

Detailed reference viewed: 10 (1 ULg)
Full Text
Peer Reviewed
See detailPhotoionization as a Soft Ionization Source for Comprehensive Two-dimensional GC (GCxGC) and High-Resolution TOFMS
Ubukata, M; Cody, RB; Dane, J et al

Poster (2016, June)

Detailed reference viewed: 37 (0 ULg)
Peer Reviewed
See detailDelivering Bad News to Customers: An Employee Perspective
Delcourt, Cécile ULg; Gremler, Dwayne; Greer, Dominique

Conference (2016, June)

Detailed reference viewed: 41 (4 ULg)
Full Text
See detailDisentangling soil from plant methanol exchanges in a maize field: a first step
Bachy, Aurélie ULg; Mozaffar, Ahsan ULg; Aubinet, Marc ULg et al

Poster (2016, June)

This poster presents the current research done in order to disentangle soil from plant methanol exchanges in a maize field. Methanol exchanges were calculated at ecosystem-scale (therefore including both ... [more ▼]

This poster presents the current research done in order to disentangle soil from plant methanol exchanges in a maize field. Methanol exchanges were calculated at ecosystem-scale (therefore including both components). It bases on the following observation: methanol exchanges on bare soil (measured when maize was at germination stage) were as important as when plants were fast growing (and thereby, when the highest methanol plant methanol emissions were expected), and this under similar weather conditions. The goal of this poster is thus to understand why emissions were similar at these two periods. First, it addresses the question of the actual contribution of maize plants in methanol exchanges, by comparing up-scaled methanol exchanges measured on maize at leaf-scale (Mozaffar A.) to those measured at ecosystem-scale. Then, it investigates methanol exchanges mechanisms in order to evaluate how did soil methanol emissions evolve along the maize growing season. At the end of this poster, the hypothesis of decreasing soil methanol emissions along the maize growing season is proposed. [less ▲]

Detailed reference viewed: 36 (5 ULg)
Full Text
Peer Reviewed
See detailProbabilistic reliability management approach and criteria for power system real-time operation
Karangelos, Efthymios ULg; Wehenkel, Louis ULg

in Power Systems Computation Conference (2016, June)

This paper develops a probabilistic approach for power system reliability management in real-time operation where risk is a product of i) the potential occurrence of contingencies, ii) the possible ... [more ▼]

This paper develops a probabilistic approach for power system reliability management in real-time operation where risk is a product of i) the potential occurrence of contingencies, ii) the possible failure of corrective (i.e., post-contingency) control and, iii) the socio-economic impact of service interruptions to end-users. Stressing the spatiotemporal variability of these factors, we argue for reliability criteria assuring a high enough probability of avoiding service interruptions of severe socio-economic impact by dynamically identifying events of nonnegligible implied risk. We formalise the corresponding decision making problem as a chance-constrained two-stage stochastic programming problem, and study its main features on the single area IEEE RTS-96 system. We also discuss how to leverage this proposal for the construction of a globally coherent reliability management framework for long-term system development, midterm asset management, and short-term operation planning. [less ▲]

Detailed reference viewed: 250 (22 ULg)
Full Text
Peer Reviewed
See detailPOP measurements: Tracking Down the Part in the Quintillion
Focant, Jean-François ULg

Conference (2016, June)

Detailed reference viewed: 13 (2 ULg)
Full Text
Peer Reviewed
See detailEffects of protein source and cooking procedure on intestinal microbiota and on fermentation end-products in rats
POELAERT, Christine ULg; Despret, Xavier; Portetelle, Daniel ULg et al

Poster (2016, June)

Animal and plant proteins are major proteins sources in the human diet. After their enzymatic degradation in the upper gastro-intestinal tract, the undigested fraction of these proteins is available for ... [more ▼]

Animal and plant proteins are major proteins sources in the human diet. After their enzymatic degradation in the upper gastro-intestinal tract, the undigested fraction of these proteins is available for fermentation by the microbiota of the large intestine leading to the production of short-chain fatty acids (SCFA), branched-chain fatty acids (BCFA), ammonia, biogenic amines, sulphur metabolites, phenols and indoles. As some of these compounds have genotoxic and cytotoxic effects, protein fermentation is considered as detrimental to the host’s epithelial health. BCFA are usually used as a marker of intestinal protein fermentation. We studied in vivo the impact of proteins from animal and plant origin, raw or after a cooking procedure, on the composition of gut microbiota and on fermentation end-products. Weanling rats were used as models of the human gut microbiota. Eight experimental diets were formulated with beef meat (Longissimus dorsi), chicken meat (Pectoralis major), white pea beans (Phaseolus vulgaris), soybeans (Glycine max), used raw and cooked, as sole source of protein in the diet. One casein diet was used as control. All diets, formulated to contain 15% of raw protein, were given to seven rats for four weeks. After euthanasia, caecal contents were collected. Pyrosequencing analyses (Roche 454 GS Junior Genome Sequencer) were performed to study the microbial composition. SCFA and BCFA were measured using HPLC (Waters 2690). Microbial composition in the caecum is associated to the type of dietary protein and to the cooking procedure applied. The proportion of BCFA in the caecal content is mainly affected by the type of protein. So BCFA represent respectively 04-06% and 35-44% of total SCFA with diets based on plant and on animal proteins. In conclusion, both the type of protein and the cooking procedure could impact the gut microbiota in terms of composition and of fermentative capacity. [less ▲]

Detailed reference viewed: 54 (14 ULg)
Full Text
Peer Reviewed
See detailVUV Optical Ground System Equipment and its application to the ICON FUV flight grating characterization and selection
Blain, Pascal ULg; Desselle, Richard ULg; Domken, Isabelle ULg et al

in Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation (2016, June)

ICON FUV is a two channel spectrographic imager that measures intensity and spatial distribution of oxygen (135.6 nm) and molecular nitrogen (157 nm) of the ionosphere. As those wavelengths are strongly ... [more ▼]

ICON FUV is a two channel spectrographic imager that measures intensity and spatial distribution of oxygen (135.6 nm) and molecular nitrogen (157 nm) of the ionosphere. As those wavelengths are strongly absorbed by the atmosphere, the optical elements of the system have to be tested inside vacuum chambers. Prior to the instrument alignment and calibration, two 3600 gr/mm gratings were characterized. The primary focus is the measurement of the diffraction efficiencies; while the second objective is to select the best grating and to define which is the flight and the spare. A dedicated setup has been developed to assess the grating optical performances under vacuum. A 1 cm diameter collimated beam is generated using an off-axis parabola and a UV source at its focal point. The grating is placed at the center of two rotation stages collinearly aligned. One detector is placed on a rotating arm, deported from its rotation center. A PMT detector records diffracted light intensity with respect to its angular position and its wavelength. Angular incidence on the grating is tuned with the help of the second rotation stage. The grating efficiency homogeneity and scattering properties are measured through a Y-X scan. [less ▲]

Detailed reference viewed: 26 (15 ULg)
Full Text
Peer Reviewed
See detailALERBLOT: Interest of 2D Immunoblot for the diagnosis of allergy to wheat
BERTHOLET, Catherine ULg; GADISSEUR, Romy ULg; quinting, birgit et al

in Allergy (2016, June), 71

Detailed reference viewed: 20 (4 ULg)
Full Text
See detailImpact d'un programme d'activation comportementale sur l'humeur, le niveau d'engagement dans des activités, les ruminations et les biais attentionnels chez des étudiantes universitaires
Krings, Audrey ULg; Wagener, Aurélie ULg; Blairy, Sylvie ULg

Poster (2016, June)

A Behavioral activation program was proposed to undergraduated students with difficulties to deal with their mood. Six sessions of a Martell's program was proposed with two evaluations, before (T0) and ... [more ▼]

A Behavioral activation program was proposed to undergraduated students with difficulties to deal with their mood. Six sessions of a Martell's program was proposed with two evaluations, before (T0) and after (T1) the sessions. Different psychological processes were evaluated (behavioral activation, avoidance, rumination and attentional biases). Compared to the control group, a significal reduction was observed for abstract rumination, avoidance and a significant enhancement of selective attention to positive faces in the dot probe task was also observed. [less ▲]

Detailed reference viewed: 23 (2 ULg)
Peer Reviewed
See detailThe antioxidant responses differ between Symbiodinium strains from different geographic origins
Roberty, Stéphane ULg; Furla, Paola; Plumier, Jean-Christophe ULg

Conference (2016, June)

Studies conducted these last two decades have revealed that high sea surface temperatures accompanied by high levels of solar irradiance are responsible for an over production of reactive oxygen species ... [more ▼]

Studies conducted these last two decades have revealed that high sea surface temperatures accompanied by high levels of solar irradiance are responsible for an over production of reactive oxygen species (ROS) leading to the disruption of the symbiosis between cnidarians and their symbiotic Symbiodinium. But, all coral species do not show the same sensitivity to stress. In this context we examined how the antioxidant network of different Symbiodinium species responds to oxidative stress. We bypassed the various thermal and light tolerances existing among the genus Symbiodinium by using a chemical approach, i.e., a treatment with menadione. ROS produced during this oxidative burst reduced photosynthesis by 30 to 50% and significantly decreased the activity of superoxide dismutase. In addition, the low level of lipid peroxidation concomitantly with the decrease in the concentration of diatoxanthin and other carotenoids during the oxidative stress confirms their function of antioxidants and their role in the stabilization of membrane lipids. The analysis of the cellular damages also indicates that proteins were damaged and most likely eliminated by the ubiquitin-proteasome pathway. Finally, caspase-like activity decreased suggesting that cell death mechanisms are not initiated at the early stage of the stress. Although, the mechanisms at play seem to be the same, we found that the temperate Symbiodinium strain (A1) was less impacted by the treatment with menadione than the tropical strain (F1) suggesting that the variations observed are related to their geographic origin. [less ▲]

Detailed reference viewed: 53 (4 ULg)
Peer Reviewed
See detailUnderstanding Usage Behaviour in a Peer-to-Peer Task Community
Deliège, Fanny ULg; Ates, Zelal ULg; Benoit, Sabine et al

Conference (2016, June)

Detailed reference viewed: 32 (2 ULg)
Full Text
Peer Reviewed
See detailECCO2 Removal The Perfusionists’ Perspective
HELLA, Dominique ULg

Conference (2016, June)

ECCO2 Removal, new technique, study to approve the methodology

Detailed reference viewed: 18 (0 ULg)
Full Text
Peer Reviewed
See detailMot à mot, brin par brin : les suites [Nom préposition Nom] comme indices de littérarité ?
Purnelle, Gérald ULg; Magri, Véronique; Legallois, Dominique

in Mayaffre, Damon; Poudat, Céline; Vanni, Laurent (Eds.) et al Statistical Analysis on Textual Data - Proceedings of 13th International Conference on Statistical Analysis of Textual Data (2016, June)

For the JADT 2012, we applied the text pattern theory to Noun-preposition-Noun (NpN) sequences, where both nouns surrounding the preposition are identical. Our working corpus was composed of texts from ... [more ▼]

For the JADT 2012, we applied the text pattern theory to Noun-preposition-Noun (NpN) sequences, where both nouns surrounding the preposition are identical. Our working corpus was composed of texts from the four main literary genres, memoirs (109 texts), novels (740 texts), poetry (191 texts) and theater (210 texts), 85 million words, sampled out of Frantext, a categorized database. That exploratory research allowed us to pinpoint the specific place of the NpN sequence, between language and discourse, its blooming into a full discursive pattern, able to produce a stylistic effect linked to lexical innovation, as well as its possible use as a generic litterarity marker. This paper aims at pursuing the work by extending the corpus and proposing new contrastive studies, showing the role of the NpN sequence as a litterarity marker. [less ▲]

Detailed reference viewed: 16 (0 ULg)
Peer Reviewed
See detailShedding Light on the Dark Side of Customer Participation: Investigating Customer Participation Stress
Treger, Stephanie; Büttgen, Marion; Schumann, Jan Hendrik et al

Conference (2016, June)

Detailed reference viewed: 22 (1 ULg)
Full Text
Peer Reviewed
See detailDirect control service from residential heat pump aggregation with specified payback
Georges, Emeline ULg; Cornélusse, Bertrand ULg; Ernst, Damien ULg et al

in Proceedings of the 19th Power Systems Computation Conference (PSCC) (2016, June)

This paper addresses the problem of an aggregator controlling residential heat pumps to offer a direct control flexibility service. The service is defined by a 15 minute power modulation, upward or ... [more ▼]

This paper addresses the problem of an aggregator controlling residential heat pumps to offer a direct control flexibility service. The service is defined by a 15 minute power modulation, upward or downward, followed by a payback of one hour and 15 minutes. The service modulation is relative to an optimized baseline that minimizes the energy costs. The potential amount of modulable power and the payback effect are computed by solving mixed integer linear problems. Within these problems, the building thermal behavior is modeled by an equivalent thermal network made of resistances and lumped capacitances whose parameters are identified from validated models. Simulations are performed on 100 freestanding houses. For an average 4.3 kW heat pump, results show a potential of 1.2 kW upward modulation with a payback of 600 Wh and 150 Wh of overconsumption. A downward modulation of 500 W per house can be achieved with a payback of 420 Wh and 120 Wh of overconsumption. [less ▲]

Detailed reference viewed: 193 (31 ULg)
Full Text
Peer Reviewed
See detailA TOPSAR Processor based on the Omega-K Algorithm: Evaluation with Sentinel-1 Data
Kirkove, Murielle ULg; Orban, Anne ULg; De Rauw, Dominique ULg et al

in A TOPSAR Processor based on the Omega-K Algorithm: Evaluation with Sentinel-1 Data (2016, June)

This paper presents a processor for the TOPS (Terrain Observation by Progressive Scans) imaging mode. TOPS signals have two characteristics that make the use of Stripmap SAR processors inconvenient, i.e ... [more ▼]

This paper presents a processor for the TOPS (Terrain Observation by Progressive Scans) imaging mode. TOPS signals have two characteristics that make the use of Stripmap SAR processors inconvenient, i.e., azimuth frequency and azimuth time foldings. This paper describes a processor based on the Omega-K (Ω-k) algorithm, combined with pre-processing by frequency unfolding and post-processing by time unfolding. Raw data acquired by Sentinel-1 have been used to assess the quality of image reconstruction [less ▲]

Detailed reference viewed: 48 (3 ULg)
See detailMyoclonin-1 modulates the post-translational modification of microtubules
Medard, Laurie ULg; Coumans, Bernard ULg; Lakaye, Bernard ULg et al

Poster (2016, June)

Juvenile myoclonic epilepsy is one of the most common forms of generalized genetic epilepsy. Genetic studies have shown that heterozygous mutations in Myoclonin1 are responsible for 3-9% of clinical cases ... [more ▼]

Juvenile myoclonic epilepsy is one of the most common forms of generalized genetic epilepsy. Genetic studies have shown that heterozygous mutations in Myoclonin1 are responsible for 3-9% of clinical cases worldwide. This protein contains three DM10 domains of unknown function and an EF-hand domain. We have previously demonstrated that Myoclonin1 is a microtubule-associated protein involved in cell division and radial migration during neocortex development. In cells, this protein co-localized with specific structures rich in microtubules (MTs) such as the centrosome, the poles of the mitotic spindle or the motile cilia but not with cytoplasmic MTs. This suggests post-translational modifications (PTM) of MTs may be important for the interaction between Myoclonin1 and MTs. We have co-express the different enzymes catalyzing PTM of MTs with Myoclonin1 in U2OS cell line. With one of these enzymes, we observed a strong increase in PTM in the presence of Myoclonin-1. This suggests that Myoclonin1 may interact with and modulate the activity of this enzyme. By using luciferase complementation assay and pull down experiments, we could demonstrate that it is indeed the case. Interestingly, the effect is observed even when a DM10 domain alone is co-expressed with the enzyme, suggesting for the first time a role for this domain. In conclusion our data suggest myoclonin-1 modulates specific PTM of MTs. This is of prime importance for microtubule dynamic and notably for neuroblast precursor migration during neocortex development. This could be the mechanism that explains why pathological forms of myoclonin-1 affect brain development. [less ▲]

Detailed reference viewed: 37 (4 ULg)
Full Text
Peer Reviewed
See detailUpdating Failure Probability Of A Welded Joint In Offshore Wind Turbine Substructures
Mai, Anh Quang ULg; Sørensen, John D.; Rigo, Philippe ULg

in The 35th International Conference on Ocean, Offshore and Arctic Engineering (OMAE) (2016, June)

For offshore wind turbines, the support structure contributes with a significant part to the Levelized Cost Of Energy (LCOE). LCOE is the total cost to build and operate a whole offshore wind turbine ... [more ▼]

For offshore wind turbines, the support structure contributes with a significant part to the Levelized Cost Of Energy (LCOE). LCOE is the total cost to build and operate a whole offshore wind turbine structure over its lifetime divided by the total energy output of the wind turbine over that lifetime. That total expected cost of operation & maintenance may be lowered by application of reliability- and risk-based maintenance strategies and updating of the reliability based on e.g. inspections performed during the design lifetime. Updating the reliability (or alternatively the failure probability) of a welded joint can theoretically be done using Bayesian updating. However, for tubular joints in offshore wind turbine substructure when considering a two dimensional crack growth and a failure criterion combined brittle fracture and material strength, the updating is quite complex due to the wind turbine loading obtained during operation. This paper considers how the reliability (or the probability of failure) of welded steel details can be updated in the case where the fatigue failure is modelled by a fracture mechanics approach and a Failure Assessment Diagram (FAD) is used to define a limit state equation. Besides, it is shown how the probability of failure of fatigue critical joints can be updated for various inspection scenarios. A two dimensional bi-linear model is considered for the crack growth. Calculation of the crack depth and the crack length are coupled. The stress intensity factor is calculated following the sophisticated procedure in BS 7910:2005. The initial crack size, the yield and ultimate strengths of steel, the fracture toughness, the stress intensity factor, and the stress-ranges are considered as uncertain and modelled by random variables. The probability of detection is used to account for uncertainty in crack inspections. By using Monte Carlo simulations, stress-range histories are generated randomly and together with the calculated stress intensity factors used to check the limit state condition using the FAD approach. The probability of failure updating is done for three inspection scenarios: No crack detected; Crack detected and repaired; Crack detected but not repaired. The paper presents illustrative results for offshore wind applications for the three scenarios, including comparisons of application of the FAD approach for modelling the limit state equation with a ‘conventional’ approach where it is assumed that failure happens when crack-depth reaches the plate thickness or the stress intensity factor is equal to or larger than the fracture toughness of the material. Finally, it is discussed how application of the updating procedure can be used for inspection planning for offshore wind turbine support structures, and thus also for reducing the required safety factors at the design stage. [less ▲]

Detailed reference viewed: 124 (55 ULg)
Full Text
Peer Reviewed
See detailOptical design and optical properties of a VUV spectrographic imager for ICON mission
Loicq, Jerôme ULg; Kintziger, Christian ULg; Mazzoli, Alexandra ULg et al

in Proceedings of SPIE (2016, June)

In the frame of the ICON (Ionospheric Connection Explorer) mission of NASA led by UC Berkeley, CSL and SSL Berkeley have designed in cooperation a new Far UV spectro-imager. The instrument is based on a ... [more ▼]

In the frame of the ICON (Ionospheric Connection Explorer) mission of NASA led by UC Berkeley, CSL and SSL Berkeley have designed in cooperation a new Far UV spectro-imager. The instrument is based on a Czerny-Turner spectrograph coupled with two back imagers. The whole field of view covers [± 12° vertical, ± 9° horizontal]. The instrument is surmounted by a rotating mirror to adjust the horizontal field of view pointing by ± 30°. To meet the scientific imaging and spectral requirements the instrument has been optimized. The optimization philosophy and related analysis are presented in the present paper. PSF, distortion map and spectral properties are described. A tolerance study and alignment cases were performed to prove the instrument can be built and aligned. Finally straylight and out of band properties are discussed. [less ▲]

Detailed reference viewed: 20 (8 ULg)
Peer Reviewed
See detailLes manuels de littérature, outils au service du dialogue des arts?
Scheepers, Caroline ULg; Obravodic, Elisa

Conference (2016, June)

Dans quelle mesure la littérature est-elle enseignée dans les manuels belges et français contemporains en interaction avec d’autres formes artistiques, qu’elles soient plastiques, visuelles, musicales ... [more ▼]

Dans quelle mesure la littérature est-elle enseignée dans les manuels belges et français contemporains en interaction avec d’autres formes artistiques, qu’elles soient plastiques, visuelles, musicales, architecturales, cinématographiques… ? Voici la question qui s’inscrit au cœur de notre propos. En effet, la présente contribution étudie l’articulation entre littérature et art telle qu’elle se donne à voir dans les manuels belges et français actuels destinés aux élèves du secondaire inférieur (collège) et supérieur (lycée). Pour ce faire, nous commencerons par décliner plusieurs questions de recherches plus circonscrites avant de discuter les concepts-clés de notre problématique. L’étude repose sur des fondements théoriques multiples et hétérogènes, puisqu’ont été convoqués notamment les travaux de Choppin (2005, 2008), de Bautier et al. (2012), de Perret-Truchot (2015) ou de Bonnery (2015). Nos résultats s’appuient sur l’analyse fine de trente-neuf manuels. Si la recherche revêt un caractère exploratoire, les résultats qu’elle a induits invitent à prendre en compte ultérieurement un corpus plus important et suscitent des questions vives, tant du côté de la conception des manuels que de leur réception auprès des élèves, mais aussi des enseignants ou de leurs formateurs. [less ▲]

Detailed reference viewed: 15 (0 ULg)
Peer Reviewed
See detailThe influence of customer characteristics on the customer need knowledge of frontline employees
Hüttel, Björn; Schumann, Jan Hendrik; Büttgen, Marion et al

Conference (2016, June)

Detailed reference viewed: 64 (2 ULg)
Full Text
Peer Reviewed
See detailWelfare and the creation of Undocumented EU migrants in Belgium
Mescoli, Elsa ULg; Lafleur, Jean-Michel ULg

Conference (2016, June)

Detailed reference viewed: 39 (3 ULg)
Full Text
See detailCultural stratigraphy at Sibudu and its implications for our understanding of the MSA
Conard, Nicholas; Miller, Christopher; Rots, Veerle ULg et al

Conference (2016, June)

Detailed reference viewed: 13 (1 ULg)
Full Text
Peer Reviewed
See detailLe marquage et les soins vétérinaires appliqués aux camélidés d'après la documentation papyrologique grecque d’Égypte
Ricciardetto, Antonio ULg

in Gitton-Ripoll, Valérie (Ed.) La trousse du vétérinaire dans l'Antiquité et au Moyen Âge. Instruments et pratiques (2016, June)

Detailed reference viewed: 35 (12 ULg)
Peer Reviewed
See detailDetection of myocardial ischemic memory using 99mTc-fucoidan: preclinical validation
Mikail, N; Louedec, L; Aid, R et al

Conference (2016, June)

Detailed reference viewed: 24 (1 ULg)
Full Text
Peer Reviewed
See detailContext-dependent feature analysis with random forests
Sutera, Antonio ULg; Louppe, Gilles; Huynh-Thu, Vân Anh ULg et al

in Uncertainty In Artificial Intelligence: Proceedings of the Thirty-Two Conference (2016) (2016, June)

Detailed reference viewed: 71 (21 ULg)
Peer Reviewed
See detailModeling, sensitivity analysis and parameter identification of a twin screw extruder
Grimard, Jonathan; Dewasme, Laurent; Thiry, Justine ULg et al

Conference (2016, June)

Detailed reference viewed: 34 (3 ULg)
Full Text
Peer Reviewed
See detailAnalogical reasoning in children with Specific Language Impairment: Evidence from a scene analogy task
Krzemien, Magali ULg; Jemel, Boutheina; Maillart, Christelle ULg

Poster (2016, June)

Analogical reasoning development maintains a mutual influence with language acquisition: the use of relational labels helps to resolve analogical reasoning tasks (Christie & Gentner, 2014) while ... [more ▼]

Analogical reasoning development maintains a mutual influence with language acquisition: the use of relational labels helps to resolve analogical reasoning tasks (Christie & Gentner, 2014) while analogical reasoning enables the acquisition of new linguistic concepts or structures (Gentner & Namy, 2006). This link has driven some authors to examine the analogical reasoning ability of children with Specific Language Impairment. Those children have poorer analogical reasoning performance than their age-matched peers without language disorders (Leroy et al., 2012 ; Leroy et al., 2014). So, children with SLI seem to have an analogical reasoning weakness which could be linked to their language disorders. Thus, our goal here is to measure the ability of children with SLI to solve analogies, and to compare it to chronological age-matched but also to linguistic age-matched peers without language disorders. Our hypotheses here are the followings: children with SLI have weaker analogical reasoning competence compared to chronological age-matched peers and similar or weaker analogical reasoning competence compared to language-matched peers. To test these hypotheses, we use a scene analogy task composed of pictures of 20 relations (Richland et al., 2006) varying in relational complexity (binary or ternary relations) and in perceptual distraction. Twenty children with SLI are matched to chronological age and linguistic age peers without language disorders. Children with SLI have poorer performance then their age-matched peers but they have similar performance to their language-matched peers. This data reinforces the idea of a link between analogical reasoning and language, also in children with SLI. However, the nature of this link should still be clarified. [less ▲]

Detailed reference viewed: 61 (4 ULg)
Full Text
Peer Reviewed
See detailBeyond stuttering : Speech disfluencies in normally fluent, French-speaking children at age four
Leclercq, Anne-Lise ULg; Suaire, Pauline; Moyse, Astrid

Poster (2016, June)

The aim of the present study is to establish normative data concerning the speech disfluencies existing in normally fluent children speaking French at age 4, an age at which stuttering has begun in 95% of ... [more ▼]

The aim of the present study is to establish normative data concerning the speech disfluencies existing in normally fluent children speaking French at age 4, an age at which stuttering has begun in 95% of children who stutter (Yairi & Ambrose, 2013). [less ▲]

Detailed reference viewed: 21 (3 ULg)
Full Text
Peer Reviewed
See detailMethodology to fish peptide ligands of nAChRs from Cone snail venoms by MALDI-TOF mass spectrometry
Echterbille, Julien ULg; Gilles, Nicolas; Araoz, Romulo et al

Poster (2016, June)

More than 50,000 of venomous species are currently indexed in the world. Each of their venom is composed of hundreds of toxins which potentially exhibit a high selectivity for membrane receptors such as ... [more ▼]

More than 50,000 of venomous species are currently indexed in the world. Each of their venom is composed of hundreds of toxins which potentially exhibit a high selectivity for membrane receptors such as GPCRs or ion channels. Among them, nAChRs are a target for drug discovery, primarily for treating central nervous system troubles. Therefore, the discovery of pharmacological tools and innovative drugs targeting nAChRs from animal venoms appears as an evidence. This study proposes the use a mass-spectrometry based methodology1 to discover new nAChRs ligands from cone snails venoms, and particularly -conotoxins (a-CTXs), known as potential antagonists of nAChRs2. in few words, Torpedo membranes, containing a high concentration of nAChRs, are incubated with BSA tryptic digests (>100 peptides) doped by small amounts of known a-CTXs. After two hours incubation, free (i.e. containing molecules remaining in solution) and bound (i.e. peptides bound to the membranes) fractions were analyzed with a MALDI-TOF/TOF mass spectrometer. The POC (positive and negative controls) as well as a real screening of Conus ermineus venom are presented. [less ▲]

Detailed reference viewed: 54 (8 ULg)
Full Text
Peer Reviewed
See detailÉtude statistique de la syntaxe des lexèmes _chetif_, _dolent_, _las_ et _maleüré_ en français médiéval
Mazziotta, Nicolas ULg

in Mayaffre, Damon; Poudat, Céline; Vanni, Laurent (Eds.) et al JADT 2016 - Proceedings of the 13th International Conference on Statistical Analysis of Textual Data (2016, June)

Detailed reference viewed: 21 (1 ULg)
Peer Reviewed
See detailFactorization of minimal substitutive subshifts
Leroy, Julien ULg

Conference (2016, June)

Detailed reference viewed: 12 (5 ULg)
Full Text
See detailEducation of instructors of a physical activity program for cancer patients and survivors: planning and evaluation of interactive adapted physical activity working groups
Rompen, Jérôme ULg; Korycki, Marta ULg; Ortmans, Sabine et al

Conference (2016, June)

Introduction Raviva is a Belgian adapted physical activity (APA) program for cancer patients and survivors, developed by the Belgian Foundation against Cancer (http://www.cancer.be/aide-aux-patients/la ... [more ▼]

Introduction Raviva is a Belgian adapted physical activity (APA) program for cancer patients and survivors, developed by the Belgian Foundation against Cancer (http://www.cancer.be/aide-aux-patients/la-fondation-votre-service/raviva-bouger-pour-se-sentir-mieux). Activities supported by this foundation are supervised by instructors with inconstant trainings and experiences. Indeed, in Belgium, APA instructors do not necessarily follow specific training programs such those proposed by the ACSM (Schmitz et al., 2010). As it is the case in sport coaches’ education (Erickson et al., 2008), interacting with colleagues and sharing knowledge could be an interesting way to improve APA instructors’ competencies. The aim of this study was to plan and analyse interactive APA working groups, as part of a training day intended for all Raviva instructors. Methods As part of this training, we proposed three practical physical activity working groups, each one concerning a specific activity: fitness, relaxation and aqua-aerobics. They were designed to generate some good practices in intervention with Raviva groups and had to be interactive: all participants had the opportunity to present their own practices and to discuss and comment the practices of the others. Three methods were used to analyse the activities: interviews of the organizers (n=4), a questionnaire for all trainees (n=35) and participant observation. Results Many examples of practical situations and good practices have been identified.79.4% of the trainees considered that the proposed method was interesting and 88.3% mentioned that they have been actively involved. The organizers were less convinced as they highlighted a lack of ideas sharing as well as low active participation and dynamism. Observations confirmed the organizers’ opinions. Conclusions Participants appeared to be globally satisfied with the practical activities. However, further research is needed to measure the impact of such methods on their future practices. [less ▲]

Detailed reference viewed: 13 (5 ULg)
Full Text
See detailAssessment of fine scale population genetic diversity and regeneration in Congo basin logged forests
Evrard, Quentin ULg; Daïnou, Kasso ULg; Hardy, Olivier et al

Poster (2016, June)

Background In the Congo Basin most of the light-demanding timber tree species display a deficit of natural regeneration which is a major handicap for sustainable production and certification. Whilst the ... [more ▼]

Background In the Congo Basin most of the light-demanding timber tree species display a deficit of natural regeneration which is a major handicap for sustainable production and certification. Whilst the majority of scientists investigate abiotic and biotic factors explaining that pattern, we hypothesize that tree population density or individual spatial isolation may also affect the tree fitness through inbreeding. In this study, we integrate ecological and genetic approaches to characterize the regeneration potential of a set of priority timber species by (i) estimating pollen dispersal distances at various tree population densities, and (ii) evaluating the impact of increasing spatial isolation on mating characteristics and tree fitness. The ultimate goal is the proposal of minimum population density that prevents inbreeding consequences. Method This ongoing study focuses on 10 timber species (Pericopsis elata, Milicia excelsa, Baillonella toxisperma, Entandrophragma cylindricum, E. utile, E. angolense, E. candollei, Afzelia bipindensis, Erythrophleum suaveloens, Terminalia superba). The data collection was carried out in the logging concession granted to Pallisco in Cameroon. We established two 400-ha plots, where all individuals (DBH > 10 cm) of the target species were inventoried and mapped. A sample of leave or cambium was collected for each of these individuals, as well as for seedlings to characterize patterns of gene flow using genetic tools (nuclear microsatellites). Dispersal agents were identified by direct observations and camera traps. Germination success was characterized in nursery for seeds collected on trees under an increasing isolation gradient. Results Main dispersal agents (wind, bat, rodent) and predators (rodent) were identified for all the species. The gene flow and germination data is still being analyzed and the main results will be presented in the poster. Conclusion Our data will allow characterizing the reproductive biology of a set of important timber species from the Congo basin. These information will strengthen sustainable forest management and the application of certification by adjusting harvesting norms through the use of scientifically-relevant data. In particular, we will tentatively define a maximum distance to be maintained between two adults to allow a qualitative reproduction. [less ▲]

Detailed reference viewed: 15 (0 ULg)
Full Text
Peer Reviewed
See detailQuelles sont les valeurs professionnelles identifiées et partagées par les encadrants d'un Master Professionnalisant en Enseignement Supérieur (Formasup)?
Delfosse, Catherine ULg; Jérôme, Françoise ULg; Detroz, Pascal ULg et al

Conference (2016, June)

Quelles sont les valeurs professionnelles identifiées et partagées par les encadrants d’un Master Professionnalisant en Enseignement Supérieur (Formasup) ? Les participants y sont-ils sensibles ? Le ... [more ▼]

Quelles sont les valeurs professionnelles identifiées et partagées par les encadrants d’un Master Professionnalisant en Enseignement Supérieur (Formasup) ? Les participants y sont-ils sensibles ? Le Master de spécialisation en pédagogie universitaire Formasup, formation diplômante de 60 ECTS organisée à l’Université de Liège, s’adresse à des enseignants du supérieur qui souhaitent s’engager dans une démarche rigoureuse de développement professionnel. Le dispositif de formation est porté principalement par quatre personnes (deux chargés de cours et deux accompagnatrices pédagogiques) et compte une dizaine de participants par an. Les enseignants-participants entrent dans le dispositif avec un « cours-projet » pour lequel ils identifient des éléments perfectibles. Ils améliorent ensuite leur cours en y intégrant une innovation pédagogique dont ils tentent d’évaluer l’impact sur la motivation et l’apprentissage de leurs étudiants. Les méthodes employées pour aider les enseignants à développer les compétences nécessaires à cette démarche combinent des séances de cours en présentiel et à distance et prévoient un transfert systématique des apprentissages théoriques au cours projet de l’enseignant. Un accompagnement individualisé est également proposé, une spécificité perçue par les enseignants-participants comme une force. Si le dispositif a bien sûr évolué au fil des années, il nous a aussi donné l’occasion de nous interroger sur nos valeurs et de réfléchir à la manière dont ces valeurs étaient partagées et se traduisaient effectivement dans nos postures, nos actions et nos modalités d’évaluation. ¬¬¬Cette recherche vise à répondre aux questions suivantes : « dans les préoccupations quotidiennes des encadrants, quels sont les éléments qui peuvent être qualifiés de « valeurs » ? Ces valeurs sont-elles réellement partagées par les quatre encadrants ? Quelle perception les acteurs ont-ils de la « traduction » de ces valeurs dans la conception, l’animation et l’évaluation de ce dispositif de formation ? Nous nous centrerons essentiellement ici sur l’analyse des perceptions croisées des encadrants et des participants, obtenues sur la base d’écrits professionnels et de réponses à des questionnaires et entretiens. Nous sommes bien conscients de l’intérêt de futures investigations concernant leurs comportements de terrain. Références : Jenson, J. D. (2002). If I knew then what I know now: A first year faculty consultant’s top ten list. In K. H. Gillespie (Ed.), A guide to faculty development. Practical advice, examples and resources (pp. 92-98). San Francisco, CA: Anker Publishing Company, Inc. Langevin, L. (2009). Accompagnement pédagogique: une expertise à développer. Dans D. Bédard & J. Béchard (Éd.), Innover dans l’enseignement supérieur (pp. 139-150). Paris: PUF. Lebrun, M. (…) 12 commandements pour le conseiller pédagogique dans l’enseignement supérieur et à l’université – Le Blog de Marcel, page consultée le 20 novembre Lecloux, S. & Kozlowski, D. (2012). Evaluer les compétences professionnelles des conseillers pédagogiques à l’université à l’aide d’un référentiel. Colloque de l’Admee, Luxembourg. Paul Maela (2004). L’accompagnement : une posture professionnelle spécifique », Recherche et formation [En ligne], 52 | 2006, mis en ligne le 06 décembre 2011, consulté le 19 novembre 2015. URL : http://rechercheformation.revues.org/1242 Simondi, E. et Perrenoud, B. « Savoirs et éthique dans l’accompagnement », Recherche et formation [En ligne], 66 | 2011, mis en ligne le 01 mars 2013, consulté le 20 novembre 2015. URL : http://rechercheformation.revues.org/1121». TLS (Teaching and Learning Services) Mission and Guiding Principles. http://www.mcgill.ca/tls/about/mission page consultée le 20 novembre Udave, J.-P. (2003) L’accompagnement est un humanisme, posture, déontologie, éthique de l’accompagnement. Pratiques innovantes – Débattre « accompagner les démarches innovantes » [less ▲]

Detailed reference viewed: 36 (2 ULg)
Peer Reviewed
See detailAccounting for the legacy of soil and crop management when assessing climate change impact on crop production"
Basso, Bruno; Dumont, Benjamin ULg; Shcherbak, Iurii et al

Conference (2016, June)

Detailed reference viewed: 40 (2 ULg)
Full Text
Peer Reviewed
See detailPour une conception deleuzienne de l'interdiscursivité
Franck, Thomas ULg

Conference (2016, June)

Detailed reference viewed: 129 (89 ULg)
Full Text
See detailMitigation of the torsional flutter phenomenon of bridge deck section during a lifting phase
Andrianne, Thomas ULg; De Ville De Goyet, Vincent ULg

in Mitigation of the torsional flutter phenomenon of bridge deck section during a lifting phase (2016, June)

This paper presents a complete analysis of the aeroelastic behaviour of a deck section during the construction stage of the Third Bosphorus Bridge in Istanbul, Turkey. The combination of the low torsional ... [more ▼]

This paper presents a complete analysis of the aeroelastic behaviour of a deck section during the construction stage of the Third Bosphorus Bridge in Istanbul, Turkey. The combination of the low torsional stiffness along the vertical axis and the unstable aerodynamic shape of the suspended deck section led to a torsional flutter instability for a low wind speed (9.6 m/s). This low critical wind speed was obviously very likely to occur on the site of construction, so that mitigation actions were be implemented. It was decided to cover partially the sides of the deck section in order to modify adequately its aerodynamic shape. It is demonstrated that the proposed aerodynamic counter-measures increase the critical torsional flutter wind speed up to 39.5 m/s (worst configuration), which is acceptable for the construction phase of the bridge. The proposed mitigation solution was implemented and no torsional oscillations were observed. [less ▲]

Detailed reference viewed: 30 (6 ULg)
Full Text
Peer Reviewed
See detailInstauration d'un trajet de réintégration multidisciplinaire au sein de l'Assurance Maladie belge : ombres et lumière
Mairiaux, Philippe ULg

in Archives des Maladies Professionnelles et de l'Environnement (2016, June), 77(3), 363

Le modèle dit de Sherbrooke développé par P. Loisel au Québec constitue le fondement des recommandations internationales en matière de programmes de retour au travail pour les travailleurs souffrant de ... [more ▼]

Le modèle dit de Sherbrooke développé par P. Loisel au Québec constitue le fondement des recommandations internationales en matière de programmes de retour au travail pour les travailleurs souffrant de lombalgie. Ce modèle a inspiré les recommandations belges et françaises (HAS 2013) en la matière. De nombreuses études explorent maintenant la possibilité d’une intervention précoce en milieu de travail – un des axes essentiels du modèle de Sherbrooke - dans d’autres problématiques de santé que la lombalgie, et notamment en cas de décompensation psychique. La combinaison d’une telle intervention avec les approches propres aux milieux de soin représente cependant un réel défi. Le programme de prévention secondaire de la lombalgie initié en Belgique en 2004 dans le cadre de l’assurance maladies professionnelles permet d’illustrer quelques-unes des difficultés à surmonter : information du public-cible (tout travailleur exposé à la manutention de charges et/ou aux vibrations corps-entier) et des médecins traitants concernés, mise en place d’une collaboration, jusque-là inexistante, entre médecins de revalidation et médecins du travail, sensibilisation des employeurs. Même la collaboration entre médecins se heurte à de sérieuses barrières. Elle implique en effet un dialogue et une relation de confiance entre le médecin traitant qui considère prioritairement la protection de son patient, le médecin du travail qui a à juger l’aptitude d’un travailleur pour une activité de travail définie et un médecin-conseil de la sécurité sociale dont la fonction centrale était encore récemment le contrôle du bien-fondé de l’arrêt de travail afin de préserver l’équilibre financier du système. La prévention de la désinsertion professionnelle devrait idéalement constituer un objectif commun à ces trois métiers médicaux mais il s’agit à l’évidence d’un chantier de longue haleine. La décision du gouvernement belge d’instaurer un trajet de réintégration multidisciplinaire au sein de l'Assurance Maladie pour tout assuré en arrêt-maladie depuis 3 mois a révélé, avant même sa mise en application prévue en 2016, les enjeux sous-jacents à un tel projet. Les négociations avec les partenaires sociaux ont abordé plusieurs questions. Veut-on promouvoir plus d’équité sociale, ou simplement limiter l’augmentation alarmante des dépenses d’invalidité ? L’entrée de l’assuré dans le trajet proposé va-t-elle se faire sur base volontaire, ou faut-il prévoir une sanction financière en cas de refus ? A quel médecin confier la direction du trajet ? Quelle place réserver au médecin du travail, et au médecin traitant ? Faut-il prévoir une responsabilisation financière de l’entreprise ou faire confiance à la bonne volonté des employeurs ? [less ▲]

Detailed reference viewed: 12 (0 ULg)
Full Text
Peer Reviewed
See detailAlignment and calibration of the ICON-FUV instrument: Development of a vacuum UV facility
Loicq, Jerôme ULg; Blain, Pascal ULg; Kintziger, Christian ULg et al

in Proceedings of SPIE (2016, June)

The optical calibration of the ICON-FUV instrument requires designing specific ground support equipment (GSE). The ICON-FUV instrument is a spectrographic imager that operates on two specific wavelengths ... [more ▼]

The optical calibration of the ICON-FUV instrument requires designing specific ground support equipment (GSE). The ICON-FUV instrument is a spectrographic imager that operates on two specific wavelengths in the UV (135.6 nm and 157 nm). All the operations have to be performed under vacuum UV light. The optical setup is based on a VUV monochromator coupled with a collimator that illuminates the FUV entrance slit. The instrument is placed on a manipulator providing fields pointing. Image quality and spectral properties can be then characterized for each field. OGSE, MGSE, optical calibration plan and vacuum alignment of the instrument are described. [less ▲]

Detailed reference viewed: 35 (18 ULg)
Peer Reviewed
See detailSeasonal variation in human COGNITIVE brain responses
Meyer, Christelle; Muto, Vincenzo ULg; Jaspar, Mathieu ULg et al

Poster (2016, June)

Detailed reference viewed: 18 (3 ULg)
Peer Reviewed
See detailUn outil e-Health pour tous ? Le cas de l'informatisation du dossier infirmier au sein d'un hôpital belge
Slomian, Cynthia ULg; Schoenaers, Frédéric ULg

in Lovis, Christian; Séroussi, Brigitte; Ugon, Adrien (Eds.) et al eSanté pour tous (2016, June)

Contexte. Les soins de santé en Belgique et ailleurs sont confrontés à deux réalités : l’augmentation de la demande de soins, d’une part, et la volonté de l’Etat de diminuer les dépenses de santé, d’autre ... [more ▼]

Contexte. Les soins de santé en Belgique et ailleurs sont confrontés à deux réalités : l’augmentation de la demande de soins, d’une part, et la volonté de l’Etat de diminuer les dépenses de santé, d’autre part. Dans ce contexte, l’e-Health est souvent présentée comme la solution qui permettra de rationaliser les moyens, mais également d’augmenter l’efficience du système. Cet article se propose d’étudier une facette de l’e-Health : l’informatisation du dossier infirmier au sein d’un hôpital belge. Méthodes. Le matériau empirique rassemble des entretiens semi-directifs (n=30), des heures d’observation du travail infirmier (n=25) ainsi que l’étude de documents organisationnels. L’analyse du matériau repose sur la sociologie de l’action organisée. Résultats. L’introduction de l’ordinateur provoque des changements, mais également la persistance de routines organisationnelles. Discussion. Les infirmières s’approprient le dossier infirmier informatisé et tentent de maximiser leur pouvoir au sein de l’organisation. Conclusion. Un outil informatique n’est jamais totalement contraignant. Les acteurs se saisissent des marges de manœuvre laissée par celui-ci pour maximiser leur pouvoir. L’appropriation contingente du dispositif est au cœur de cette démarche de changement. [less ▲]

Detailed reference viewed: 65 (5 ULg)
Full Text
Peer Reviewed
See detailDevelopment of a semi-analytical model of volumetric expander for system-level simulation.
Oudkerk, Jean-François ULg

in Proceedings of ECOS 2016 (2016, June)

Organic Rankine cycles are particularly well suited for recovering energy from low-grade heat sources, such as industrial waste, engine exhaust gas or solar concentrated power. In ow-capacity systems ... [more ▼]

Organic Rankine cycles are particularly well suited for recovering energy from low-grade heat sources, such as industrial waste, engine exhaust gas or solar concentrated power. In ow-capacity systems, volumetric expanders are often preferred to turbomachines because of their reliability, robustness, low rotational speed and their ability to handle high pressure ratios… Different types of machines have been investigated and successfully tested by the uthors and tools have been developed in order to analyse experimental data. Semi-empirical odel was built to analyse losses, detect potential improvement and simulate performances. This paper present a simple and fastcomputing semi-analytical model useful for simulate dynamic system integrating volumetric expander. This model is validated on experimental data and compare to black-box model. [less ▲]

Detailed reference viewed: 27 (8 ULg)
Full Text
See detailEducation of instructors of a physical activity program for cancer patients and survivors: planning and evaluation of a poster presentation session
Rompen, Jérôme ULg; Korycki, Marta ULg; Ortmans, Sabine et al

Poster (2016, June)

Introduction The Belgian Foundation against Cancer proposes an adapted physical activity (APA) program for cancer patients and survivors, called Raviva (http://www.cancer.be/raviva-bouger-pour-se-sentir ... [more ▼]

Introduction The Belgian Foundation against Cancer proposes an adapted physical activity (APA) program for cancer patients and survivors, called Raviva (http://www.cancer.be/raviva-bouger-pour-se-sentir-mieux).The activities are supervised by instructors with inconstant trainings and experiences. Contrary to other countries, Belgian APA instructors do not necessarily need to follow specific education programs such those proposed by the ACSM (Schmitz et al., 2010).We were involved in the implementation of a specific training day for in-service Raviva instructors. As it is the case in sport coaches’ education (Erickson et al., 2008), interacting with colleagues seemed to be an appropriate method to improve APA instructors’ skills. Therefore, interactive methods were proposed to be used in order to increase the participants’ interest. The aim of this paper was to describe and analyse a poster presentation session as well as to identify good practices. Methods As part of the training day, the poster presentation session consisted to create groups of 4 to 5 persons and to ask them to imagine and share solutions to specific problems linked with psycho-emotional aspects of the instruction process with Raviva groups. Three methods were used to collect the data: interviews of the organizers (n=4), a questionnaire for all trainees (n=35) and participant observation. Results Examples of good practices were listed and exchanged between the participants. All trainees considered that the poster presentation session was interesting and most of them (94%) reported that appropriate themes were discussed. Moreover, 88.2% of the participants mentioned that they were able to share their experiences. Three expressed negative opinions about the organization. These opinions were supported by all organizers as well as by the observation. Conclusions This educational tool seems to be interesting. However, organizers should plan enough time for such activity. Moreover, the time allocation between each part of the session should be better prepared and controlled. [less ▲]

Detailed reference viewed: 20 (6 ULg)
Peer Reviewed
See detailShedding Light on the Dark Side of Customer Participation: Investigating Customer Participation Stress
Treger, Stephanie; Büttgen, Marion; Schumann, Jan Hendrik et al

Conference (2016, June)

Detailed reference viewed: 48 (2 ULg)
Full Text
Peer Reviewed
See detailEfficient Computation of the Extrema of Algebraic Quality Measures for Curvilinear Finite Elements
Johnen, Amaury ULg; Geuzaine, Christophe ULg; remacle, Jean-François

Conference (2016, June)

The development of high-order computational methods for solving partial differential equations on unstructured grids has been underway for many years. Such methods critically depend on the availability of ... [more ▼]

The development of high-order computational methods for solving partial differential equations on unstructured grids has been underway for many years. Such methods critically depend on the availability of high-quality curvilinear meshes, as one bad element can degrade the solution in the whole domain. The usual way of generating curved meshes is to first generate a (high-quality) straight-sided mesh. Then, mesh entities that are classified on the boundaries of the domain are curved. This operation introduces a "shape-distortion" that should be controlled. Quality measures allow to quantify to which point an element is well-shaped. They also provide tools to improve the quality of meshes through optimization. In this work we propose an efficient method to compute several quality measures for curved elements, based on the Jacobian of the mapping between the straight-sided elements and the curved ones. Contrary to the approach presented in "A. Gargallo-Peiró, X. Roca, J. Peraire, and J. Sarrate. Distortion and quality measures for validating and generating high-order tetrahedral meshes. Engineering with Computers, pages 1–15, 2014.", which relies on an L2-norm over the elements, we compute the actual minimum and maximum of the local quality measure for each element. The method is an extension of previous works on the validity of those elements (A. Johnen et al., 2013). The key feature is that we can adaptively expand functions based on the Jacobian matrix and its determinant in terms of Bézier functions. Bézier functions have both properties of boundedness and positivity, which allow sharp computation of minimum or maximum of the interpolated functions. [less ▲]

Detailed reference viewed: 58 (4 ULg)
Full Text
Peer Reviewed
See detailAnalyse de la main d’œuvre dans la riziculture de la plaine de la Ruzizi des pays de la CEPGL
Furaha Mirindi, Germaine ULg; Lebailly, Philippe ULg

Conference (2016, June)

Le salariat agricole se développe et les exploitations agricoles y ont de plus en plus recours, notamment dans la riziculture traditionnellement familiale. Jusque-là peu de travaux s’y sont intéressés ... [more ▼]

Le salariat agricole se développe et les exploitations agricoles y ont de plus en plus recours, notamment dans la riziculture traditionnellement familiale. Jusque-là peu de travaux s’y sont intéressés alors qu’il permet de repenser le fonctionnement des exploitations et d’assurer dans certains cas leur reproduction. Nous proposons ici de nous intéresser au salariat, du point de vu des exploitants rizicoles et d’identifier les facteurs qui influencent le recours à la main d’œuvre salariale locale et étrangère selon le cas. L’étude se base sur les données des enquêtes menées auprès de 240 exploitants rizicoles choisis à partir de la méthode des quotas sur la base d'une stratification des exploitations rizicoles et 60 salariés agricoles choisis de manière aléatoire et répartis de manière équitable entre les trois pays. La main d’œuvre agricole est relativement jeune à prédominance masculine. Alors que dans les sites rwandais et burundais, la main d’œuvre locative est locale, dans le site congolais, on y observe un certain flux de la main d’œuvre car 72% de la main d’œuvre travaillant dans les exploitations rizicoles est étrangère dont 47% en provenance du Burundi et 25% en provenance du Rwanda. A partir du test de Levene et celui de Brown et Forsythe, pour les riziculteurs congolais, les facteurs qui influence le recours à la main d’œuvre étrangère sont notamment la superficie rizicole exploitée, une main d’œuvre étrangère bon marché, la facilité d’accès aux intrants bon marché, l’insuffisance de la main d’œuvre locale. En plus, cette main d’œuvre joue un rôle crucial dans la cohésion des peuples dans un contexte post -conflits. [less ▲]

Detailed reference viewed: 21 (2 ULg)
Peer Reviewed
See detailTranscranial magnetic stimulation in sleep consciousness
Gosseries, Olivia ULg; Niemienen, Jaakko; Jason, Samaha et al

Poster (2016, June)

Detailed reference viewed: 27 (1 ULg)
Peer Reviewed
See detailSharing a Car? Yuck, No! An Investigation of Consumer Contamination in Access-Based Services
Hazee, Simon ULg; Delcourt, Cécile ULg; Van Vaerenbergh, Yves

Conference (2016, June)

Detailed reference viewed: 18 (3 ULg)
Full Text
Peer Reviewed
See detailECCO2 Removal; The Perfusionists’ Perspective
AMAND, Théophile ULg; KOCH, Jean-Noël ULg; HELLA, Dominique ULg

Conference (2016, June)

ECCO2 Removal is a new technique. Lab approach.New study to validate the technique.

Detailed reference viewed: 18 (4 ULg)
Full Text
See detailInfluence of propeller configuration on propulsion system efficiency of multi-rotor Unmanned Aerial Vehicles
Theys, Bart; Dimitriadis, Grigorios ULg; Hendrick, Patrick et al

in Proceedings of the International Conference on Unmanned Aircraft Systems, ICUAS 2016 (2016, June)

Multi-rotor Unmanned Aerial Vehicles make use of multiple propellers, mounted on arms, to produce the required lift. This article investigates the influence on propulsion system efficiency in hover due to ... [more ▼]

Multi-rotor Unmanned Aerial Vehicles make use of multiple propellers, mounted on arms, to produce the required lift. This article investigates the influence on propulsion system efficiency in hover due to the configuration of these propellers. Influence of pusher or puller configuration of the propeller, number of blades, shape and dimensions of the arm, coaxial and overlapping propellers, is presented. A dedicated test bench that allows testing of various experimental setups is designed and built in order to realistically represent multi-rotor arms. Test results show that a two-bladed pusher configuration is most efficient and slenderness of the arm has more influence on efficiency than shape. A coaxial propulsion system approaches the efficiency of a single-prop system at high disk loadings. Finally, interference effects due to overlapping propellers are discussed. [less ▲]

Detailed reference viewed: 32 (3 ULg)
Peer Reviewed
See detailCustomer Coping With Service Failures Across Cultures: A Multilevel Investigation
Van Vaerenbergh, Yves; De Keyser, Arne; Hazee, Simon ULg et al

Conference (2016, June)

Detailed reference viewed: 20 (1 ULg)
Peer Reviewed
See detailHow to enhance citizenship and reduce dysfunctional patient behavior during service interactions: An empirical study in the nursing context
Lerch, Jennifer; Schmitz, Gertrud; Büttgen, Marion et al

Conference (2016, June)

Detailed reference viewed: 30 (1 ULg)
Full Text
Peer Reviewed
See detailModifying Indoor Facilities Appropriate to Children
Jidovtseff, Boris ULg; Delvaux, Anne ULg; Mornard, Manhattan ULg et al

in Book of abstracts AISEP 2016 (2016, June)

Introduction Physical literacy development during childhood is critical not only to favor sport performance outcomes but also to develop long term physical activity. It’s very important for children to ... [more ▼]

Introduction Physical literacy development during childhood is critical not only to favor sport performance outcomes but also to develop long term physical activity. It’s very important for children to move in a thinking way. Diversified activities are important to develop a large panel of fundamental motor skills and to stimulate perception. It is important for children to move, but it has to be done in a thinking way. Focus on inquiry With young children it is important to maximize active time, to develop fundamental motor skills and perception, to take into account inter-individual differences, to favor enjoyment, self-confidence and to guarantee optimal security. Most of these pedagogical challenges can be reached by appropriate instruction and by an adapted environment. Contribution There is clear evidence that modifying exercise facilities influence children’s behaviour with consequences for motivation, activity level and motor development. For 25 years a reflexive approach has been used at CEReKi (Liège, Belgium) in order to determine how indoor facilities can be modified with the aim to meet children needs and to favor motor development. Attractive circuits have been developed to stimulate specific motor skills (gymnastic, athletic or ball circuits). They were created to afford action possibilities and challenges for children to explore their own abilities for exercise. According to the children’s age and level of ability different pedagogical conditions can be provided: spontaneous play, guided discovery or structured games. Circuits have to be organised in such a way that children can do most exercises on their own. The arrangement of equipment offers multiple possibilities for movement, favouring active discovery for all children. The autonomy of children allows the teacher to move throughout the circuit and assist children by scaffolding their learning. Conclusion Our experience confirms that modifying indoor facilities is relevant for 3 to 8 years old children activities. [less ▲]

Detailed reference viewed: 21 (2 ULg)
Full Text
Peer Reviewed
See detailEffect of chondroitin sulfate on soluble biomarkers of osteoarthritis: how to analyze and interpret the results from an open-label trial in unilateral knee osteoarthritis patients
Möller, I; Gharbi, Myriam; Martinez, H et al

in Annals of the Rheumatic Diseases (2016, June), 75(Suppl 2), 1167

Detailed reference viewed: 8 (3 ULg)
Full Text
See detailIntegrated microfluidic device for gold nanoparticles synthesis
Emonds-Alt, Gauthier ULg; Malherbe, Cédric ULg; Monbaliu, Jean-Christophe ULg et al

Poster (2016, May 31)

In order to perform the analysis of organic pollutant in trace by Raman spectroscopy, it is necessary to develop SERS substrates, such as noble metal nanoparticles (NPs). The synthesis of gold or silver ... [more ▼]

In order to perform the analysis of organic pollutant in trace by Raman spectroscopy, it is necessary to develop SERS substrates, such as noble metal nanoparticles (NPs). The synthesis of gold or silver NPs is used for analytical applications. It is therefore important to precisely control the synthesis of these SERS substrates to achieve reproducible measurements. Microfluidics is a very attractive technology for the control of the synthesis parameters such as temperature, reaction time and mixing conditions which affect both the size and the morphology of NPs. The synthesis of gold or silver NPs in microreactor is a technique we are already developing in the laboratory. We develop a method for the continuous synthesis of gold and silver NPs in a segmented regime capillary microreactor. The residence time and temperature have a significant effect on the size of the NPs, enabling to prepare different sizes of NPs using the same microreactor and the same precursor solutions. [less ▲]

Detailed reference viewed: 52 (10 ULg)
Peer Reviewed
See detailI Am Very Sorry Sir! Breaking Bad News to Customers
Delcourt, Cécile ULg; GREMLER, Dwayne; GREER, Dominique

Conference (2016, May 31)

Detailed reference viewed: 34 (2 ULg)
Full Text
Peer Reviewed
See detailStructural classification and characterization of heavy petroleum base oil hydrocarbons by GC×GC-HR-TOF/MS
Giri, Anupam ULg; Courtiade, Marion; Racaud, Amandine et al

Conference (2016, May 31)

Detailed reference viewed: 28 (1 ULg)
Full Text
Peer Reviewed
See detailPeak dispersion evaluation and optimization in GC×GC
Stefanuto, Pierre-Hugues ULg; Dimandja, Jean-Marie; Focant, Jean-François ULg

Poster (2016, May 30)

Detailed reference viewed: 23 (3 ULg)
Full Text
Peer Reviewed
See detailGC×GC-TOFMS for forensic blood VOC profiling
Dubois, Lena ULg; Perrault, Katelynn ULg; Stefanuto, Pierre-Hugues ULg et al

Poster (2016, May 30)

Detailed reference viewed: 20 (3 ULg)
Full Text
See detailEstetrol, a natural SERM exhibiting combined estrogenic and anti-estrogenic properties on mammary gland and breast cancer
Gallez, Anne ULg; Gérard, Céline ULg; Blacher, Silvia ULg et al

Poster (2016, May 30)

The increased risk of breast cancer and thromboembolism in women who take hormone replacement therapy (HRT) is a major public health problem. The discovery of new drugs with better safety profile would ... [more ▼]

The increased risk of breast cancer and thromboembolism in women who take hormone replacement therapy (HRT) is a major public health problem. The discovery of new drugs with better safety profile would provide useful advances for patient care. Estetrol (E4) is a liver friendly promising candidate for HRT. In preclinical and/or clinical studies, E4 has been effective against the main symptoms of menopause from a starting dose of 0.3 mg/kg/day. The aim of this study was to define the impact of E4 on mammary gland and breast cancer development. Our preclinical data show that E4 is less efficient than estradiol (E2) to induce mammary gland growth. Treatment with several concentrations of E4 has shown that E4 did not increase tumor development, when it is used at 0.3 mg/kg/day. However, at 3 mg/kg/day, E4 increased tumor growth similarly to E2 (0.08 mg/kg/day). E4 presents also some anti-estrogenic effects on mammary gland and antitumor activity on breast cancer by decreasing the strong proliferative effect of E2. While ERα is the predominant receptor mediating its effects, the dual weak-estrogenic/anti-estrogenic feature of E4 results from differential signaling pathways activation. Both nuclear and rapid extra-nuclear signaling pathways are necessary for a complete estrogenic effect of E4. However, the antitumor action of E4 is not due to a capacity to antagonize E2-induced nuclear activity. In conclusion, our results support that E4, if it is used in strictly controlled clinical applications, could have no or only limited impact on breast and breast cancer. [less ▲]

Detailed reference viewed: 54 (5 ULg)
Full Text
Peer Reviewed
See detailGC×GC-HRTOFMS to better understand cloak-and-dagger activities of Madagascar Mantella frogs
Stefanuto, Pierre-Hugues ULg; Brasseur, Catherine; Cecchini, Harisoa et al

Poster (2016, May 30)

Detailed reference viewed: 30 (3 ULg)