References of "Paper published in a book"      in Complete repository Arts & humanities   Archaeology   Art & art history   Classical & oriental studies   History   Languages & linguistics   Literature   Performing arts   Philosophy & ethics   Religion & theology   Multidisciplinary, general & others Business & economic sciences   Accounting & auditing   Production, distribution & supply chain management   Finance   General management & organizational theory   Human resources management   Management information systems   Marketing   Strategy & innovation   Quantitative methods in economics & management   General economics & history of economic thought   International economics   Macroeconomics & monetary economics   Microeconomics   Economic systems & public economics   Social economics   Special economic topics (health, labor, transportation…)   Multidisciplinary, general & others Engineering, computing & technology   Aerospace & aeronautics engineering   Architecture   Chemical engineering   Civil engineering   Computer science   Electrical & electronics engineering   Energy   Geological, petroleum & mining engineering   Materials science & engineering   Mechanical engineering   Multidisciplinary, general & others Human health sciences   Alternative medicine   Anesthesia & intensive care   Cardiovascular & respiratory systems   Dentistry & oral medicine   Dermatology   Endocrinology, metabolism & nutrition   Forensic medicine   Gastroenterology & hepatology   General & internal medicine   Geriatrics   Hematology   Immunology & infectious disease   Laboratory medicine & medical technology   Neurology   Oncology   Ophthalmology   Orthopedics, rehabilitation & sports medicine   Otolaryngology   Pediatrics   Pharmacy, pharmacology & toxicology   Psychiatry   Public health, health care sciences & services   Radiology, nuclear medicine & imaging   Reproductive medicine (gynecology, andrology, obstetrics)   Rheumatology   Surgery   Urology & nephrology   Multidisciplinary, general & others Law, criminology & political science   Civil law   Criminal law & procedure   Criminology   Economic & commercial law   European & international law   Judicial law   Metalaw, Roman law, history of law & comparative law   Political science, public administration & international relations   Public law   Social law   Tax law   Multidisciplinary, general & others Life sciences   Agriculture & agronomy   Anatomy (cytology, histology, embryology...) & physiology   Animal production & animal husbandry   Aquatic sciences & oceanology   Biochemistry, biophysics & molecular biology   Biotechnology   Entomology & pest control   Environmental sciences & ecology   Food science   Genetics & genetic processes   Microbiology   Phytobiology (plant sciences, forestry, mycology...)   Veterinary medicine & animal health   Zoology   Multidisciplinary, general & others Physical, chemical, mathematical & earth Sciences   Chemistry   Earth sciences & physical geography   Mathematics   Physics   Space science, astronomy & astrophysics   Multidisciplinary, general & others Social & behavioral sciences, psychology   Animal psychology, ethology & psychobiology   Anthropology   Communication & mass media   Education & instruction   Human geography & demography   Library & information sciences   Neurosciences & behavior   Regional & inter-regional studies   Social work & social policy   Sociology & social sciences   Social, industrial & organizational psychology   Theoretical & cognitive psychology   Treatment & clinical psychology   Multidisciplinary, general & others     Showing results 801 to 900 of 13420     4 5 6 7 8 9 10 11 12 13 14     Évaluation des réparations en béton et identification des principaux facteurs d’influenceBissonnette, Benoît; Courard, Luc ; Garbacz, Andrzej et alin Courard, Luc; Collin, Frédéric; Cerfontaine, Benjamin (Eds.) RUGC 2016 (2016)La réparation et le renforcement des structures existantes en béton comptent parmi les plus importants défis auxquels les ingénieurs civils sont confrontés aujourd’hui et qu’ils devront relever dans les ... [more ▼]La réparation et le renforcement des structures existantes en béton comptent parmi les plus importants défis auxquels les ingénieurs civils sont confrontés aujourd’hui et qu’ils devront relever dans les années à venir. Les préoccupations actuelles concernant le développement durable favorisent la réfection au détriment de la construction neuve et ne peuvent que renforcer cette tendance. Des efforts concertés de la part des scientifiques et ingénieurs sont encore nécessaires afin d’améliorer la conception des réparations en béton et d’en assurer la qualité et la fiabilité attendues. L’un des aspects essentiels de la durabilité des réparations en béton et des revêtements ou traitements de surface est la qualité de l’adhérence entre le matériau de réparation et le béton existant. Le présent article résume les principales conclusions de travaux réalisés en collaboration en vue d’identifier les facteurs influençant l’adhérence des réparations (la rugosité, le degré de saturation et la carbonatation du substrat) et l’évaluation de celle-ci en conditions in situ (type de chargement, alignement de l’appareil). Sur la base des résultats recueillis, des recommandations ont été émises dans un guide du USBR [less ▲]Detailed reference viewed: 44 (4 ULg) Contract Farming as a Determinant of Promoting Tea Marketing Channel for Small Producers in Phu Tho ProvinceLe Thi Kim, Oanh ; Vu Dinh, Ton; Tran Huu, Cuong et alin Global Business Research Journals (GBRJ) (Ed.) Proceedings of the Doctoral Research Conference in Business Studies & Management Sciences (2016)Making contracts between farmers and firms (contract farming, for short) plays an important role in establishing access to the agricultural markets for the small producers, especially in the developing ... [more ▼]Making contracts between farmers and firms (contract farming, for short) plays an important role in establishing access to the agricultural markets for the small producers, especially in the developing and less developed countries. It is argued that contract farming provides farmers with the assured sale of their crops and agro-business firms with a steady supply of agricultural products required by the market. This paper focuses on analyzing benefits of tea producers through signing contract with firms. By using relevant research methods of verifying studying areas, making Participatory Rural Appraisal (PRA), and surveying farmers, the paper finds that although contract farmers receive lower fresh tea price in compared with the price received by non-contract farmers, they would have higher price stability and are provided with market guarantee mechanism. These benefits are really important in context of globalization and market liberalization with the demand for high quality and high value products. It is highly recommended that small farmers therefore should participate in the coordination model between farmers and firms in the process of tea production and marketing in Phu Tho Province, Vietnam. [less ▲]Detailed reference viewed: 35 (5 ULg) Limitation of self-organization within a confined aquiferWesthoff, M. C.; Erpicum, Sébastien ; Archambeau, Pierre et alin Dewals, Benjamin; Archambeau, Pierre; Pirotton, Michel (Eds.) et al Sustainable Hydraulics in the Era of Global Change (2016)Preferential flow paths are omnipresent in the subsurface, but very hard to observe or parameterize. Often they are even sub-grid processes requiring effective parametrization. In an ongoing study ... [more ▼]Preferential flow paths are omnipresent in the subsurface, but very hard to observe or parameterize. Often they are even sub-grid processes requiring effective parametrization. In an ongoing study,Westhoff et al. (2016) show within a lab experiment that the steady state effective hydraulic conductance evolves (under certain circumstances) to the conductance that maximizes power by the flux through the confined aquifer. Here we explore why in one setup the effective conductance did obey this maximum power principle, while the same setup with slightly different boundary conditions did not lead to this.We suggest here, with a detailed numerical setup of the experiment, that the degrees of freedom to create a long enough preferential flowpathwas too limited in the latter case: a foam rubber layer, placed between the sand and the plate covering the sand (to pressurize the sand layer) prevented further development of the preferential flow path. While this preferential flow path was long enough to result in an effective conductance leading to maximum power in the first setup, it needed to be longer in the second setup. © 2016 Taylor & Francis Group, London. [less ▲]Detailed reference viewed: 15 (0 ULg) Les formations à silex dans le sud de la France : élaboration en multipartenariat d’une base de données géoréférencées, premiers résultatsFernandes, Paul; Tuffery, Christophe; Raynal, Jean-Paul et alin Tomasso, Antonin; Binder, Didier; Martino, Gabriele (Eds.) et al Ressources lithiques, productions et transferts entre Alpes et Méditerranée (2016)Detailed reference viewed: 7 (0 ULg) Bode, Nicolai und Elisa von der Recke: Korrespondenzen und NetzwerkeLeyh, Valérie in Kinzel, Till; Berghahn, Cord-Friedrich (Eds.) Johann Joachim Christoph Bode (1731-1793) - ein Aufklärer aus Braunschweig in den kulturellen Netzwerken seiner Zeit (2016)Detailed reference viewed: 24 (2 ULg) The ultimate role of the perirhinal cortex in familiarity: a novel hypothesisBesson, Gabriel ; Bastin, Christine in Proceedings of the 6th International Conference on Memory (2016)Detailed reference viewed: 21 (1 ULg) The Cybernetic Tower by Nicolas Schöffer: the conservator’s role between continuity and historicity of the productionD'Haenens, Manon in Hermens, E, Robertson, Fr. (Ed.) Authenticity in Transition, Changing practices in art making and conservation, Proceedings of the NeCCAR Conference, Glasgow december 2014 (2016)Detailed reference viewed: 43 (7 ULg) Perino del Vaga maestro di Marcello VenustiGeremicca, Antonio in Agosti, Barbara; Leone, Giorgio (Eds.) Intorno a Marcello Venusti (2016)Detailed reference viewed: 27 (4 ULg) Différents manomètres pour améliorer la ventilation au masque et ballonRIGO, Vincent ; Kreins, Nathalie; Eiras da Silva, Sandra et alin Baud, Olivier; Saliba, Elie (Eds.) Congrès SFN-JFRN 2016, livre des communications (2015, December 17)INTRODUCTION Les pressions employées lors de la ventilation au ballon sont difficiles à évaluer et souvent inadéquates. Les ballons disposent d’un connecteur où brancher un manomètre (manom) à ressort ou ... [more ▼]INTRODUCTION Les pressions employées lors de la ventilation au ballon sont difficiles à évaluer et souvent inadéquates. Les ballons disposent d’un connecteur où brancher un manomètre (manom) à ressort ou une ligne vers un manom à cadran. Cependant, l’addition d’une variable à surveiller pourrait constituer une interférence et majorer le risque de fuite ou de rythme ventilatoire inadéquat. Cette étude évalue l’influence de manom simples sur la qualité de la ventilation. MÉTHODES Les participants aux Journées Belges de Pédiatrie pouvaient ventiler un mannequin aux voies respiratoires étanches avec un capteur de débit trachéal. Une pression de 25 mbar et une fréquence de 40 à 60/’ étaient visées. Une séquence de 45’’ avec un manom à ressort (R), une séquence avec un manom à cadran (C) et une sans (O) étaient réalisées dans un ordre aléatoire. La pression de pointe du ballon (P), le volume inspiratoire (VTi), et la fréquence de ventilation (FR) de chaque insufflation ont été analysées. La fuite autour du masque fut estimée en comparant VTi à un volume théorique dérivé d’une calibration avec masque scellé. RÉSULTATS Cinq néonatologues (Néo), 15 pédiatres et 11 internes ont réalisé 5279 insufflations. Les P obtenues avec un manom étaient plus élevées (O:176 mbar; R:184 mbar*; C:194 mbar*#) [*p<.05 vs O; #:p<.05 vs R] VTi augmentait légèrement (O:31 ml; R:3.11 ml*; C:3.21 ml*) FR était systématiquement trop élevé (77-82 bpm). L’usage d’un manom ne modifiait pas les paramètres pour les internes. Pour les Néo, ajouter un manom améliorait P, VTi et la fuite (P -O: 167 mbar; R and C: 204 mbar*) Sur les premières séquences de ventilation, le manom améliorait les paramètres (P-O: 124 mbar;R: 163 mbar*; C: 204 mbar*#), (VTi-O:21 ml; R:30.8 ml*; C:3.31 ml*#), (Fuite-O: 3816%; R: 2712%*; C: 3413%*#). CONCLUSIONS La ventilation au ballon reste difficile. Les pressions obtenues étaient éloignées de l’objectif, et le rythme souvent trop élevé. Si le manomètre permet d’améliorer les pressions et volumes obtenus, surtout en cas de ventilation sans feed-back préalable, cet effet bénéfique s’observe surtout pour les opérateurs expérimentés. Enfin, un congrès scientifique permet de recruter une population variée pour une étude de simulation simple. [less ▲]Detailed reference viewed: 22 (1 ULg) Imitative Learning for Online Planning in MicrogridsAittahar, Samy ; François-Lavet, Vincent ; Lodeweyckx, Stefan et alin Woon, Wei Lee; Zeyar, Aung; Stuart, Madnick (Eds.) Data Analytics for Renewable Energy Integration (2015, December 15)This paper aims to design an algorithm dedicated to operational planning for microgrids in the challenging case where the scenarios of production and consumption are not known in advance. Using expert ... [more ▼]This paper aims to design an algorithm dedicated to operational planning for microgrids in the challenging case where the scenarios of production and consumption are not known in advance. Using expert knowledge obtained from solving a family of linear programs, we build a learning set for training a decision-making agent. The empirical performances in terms of Levelized Energy Cost (LEC) of the obtained agent are compared to the expert performances obtained in the case where the scenarios are known in advance. Preliminary results are promising. [less ▲]Detailed reference viewed: 149 (53 ULg) La renonciation, l'abdication et la rupture du contrat de travailKéfer, Fabienne in La rupture du contrat de travail : entre harmonisation et discrimination (2015, December 04)L’étude, limitée au contexte de la dissolution du contrat de travail, aborde, dans une première partie, la possibilité pour les parties au contrat de travail de renoncer au bénéfice d’une disposition ... [more ▼]L’étude, limitée au contexte de la dissolution du contrat de travail, aborde, dans une première partie, la possibilité pour les parties au contrat de travail de renoncer au bénéfice d’une disposition, possibilité liée au caractère impératif ou d’ordre de la disposition en cause. Est particulièrement étudié le lien entre le rapport de subordination et la faculté d’abdiquer un droit. Le document effectue ensuite une incursion dans la question de la preuve de la renonciation. La troisième partie passe en revue un large éventail de droits auxquels les parties pourraient être tentées de renoncer : clauses d’écolage, clauses de stabilité d’emploi, renonciation au droit d’invoquer la rupture du contrat de travail en cas d’acte équipollent à rupture ou de préavis nul, renonciation à la durée du préavis ou à l’indemnité en tenant lieu, renonciation au reclassement professionnel, aux droits découlant d’une convention collective, renonciation par un délégué du personnel, renonciation par la voie d’une convention collective, etc. Si la matière reste incertaine à bien des égards, elle est aussi en évolution, tant par l’effet de la jurisprudence que par l’action de la loi, et notamment celle du 26 décembre 2013 dite « statut unique », qui a modifié de manière sensible le champ de la licéité des renonciations au délai ou à l’indemnité compensatoire de préavis. [less ▲]Detailed reference viewed: 137 (28 ULg) Estimation de la quantité de matière sèche ingérée par les vaches laitières au pâturage en traite robotisée, utilisation de l’analyse des fèces en spectrométrie dans le proche infrarougeLessire, Françoise ; Dufrasne, Isabelle ; Decruyenaere, Virginiein Agabriel, Jacques; Boichard, Didier; Choisis, Jean-Philippe (Eds.) et al 22èmes Rencontres autour des recherches sur les ruminants. (2015, December 02)Malgré l’intérêt nutritionnel et économique de l’herbe dans la ration des vaches laitières, le pâturage est de plus en plus délaissé en raison notamment de l’automatisation de la traite et de l’extension ... [more ▼]Malgré l’intérêt nutritionnel et économique de l’herbe dans la ration des vaches laitières, le pâturage est de plus en plus délaissé en raison notamment de l’automatisation de la traite et de l’extension de la taille des troupeaux. Une des raisons invoquées par les éleveurs pour cet abandon est leur manque de confiance par rapport aux quantités d’herbe réellement ingérées par les animaux et la crainte que ces apports inconstants se traduisent par des fluctuations de production laitière tant qualitative que quantitative. Or Decruyenaere et al. (2009, 2012) ont développé une méthode d’estimation de la matière sèche volontairement ingérée (MSVI) par analyse des bouses par spectrométrie dans le proche infra-rouge. Cette méthode présente l’avantage d’être non invasive, facile à mettre en œuvre sur le terrain et peu onéreuse. Le but de cette étude était donc d’évaluer l’utilisation de cette méthode dans un troupeau de vaches laitières traites par un robot mobile en pâture. Le troupeau (n=53) était divisé en 2 groupes dont le niveau de complémentation journalière était différent. Lors de la traite, le groupe 1 (GR1) recevait en moyenne 2,6 kg de concentrés/vache alors que le groupe 2 (GR2) en recevait 4,2 kg/vache. L’objectif était de vérifier l’impact du niveau de complémentation sur les résultats obtenus. Des prélèvements de fèces ont été faits une fois par mois sur 10 vaches (5 vaches par groupe) pendant 4 mois. Les spectres d’absorption dans le proche infra-rouge (NIR) ont été confrontés à des étalonnages NIR permettant l’estimation de la MSVI exprimée soit par rapport au poids vif (MSVI1), soit par rapport au poids métabolique (MSVI2). Ces estimations d’ingestion ont permis le calcul de la matière sèche journalière ingérée par vache (MSI1 et MSI2). Par ailleurs, les mesures d’herbe à l’entrée et à la sortie des parcelles pâturées ont été relevées ainsi que la densité du couvert herbacé pour évaluer la quantité d’herbe disponible. A ces valeurs de biomasses disponibles ont été additionnées des quantités de concentrés distribuées lors du passage des animaux au robot. Les valeurs moyennes de matière sèche ingérée (kg/vache/jour) pour le GR1 étaient de 15,20 ± 2,60 kg MS par la MSI1 et de 16,99 ± 1,80 kg MS pour la MSI2. Pour le GR2, la MSI1moyenne était de 20,20 ± 4,95 kg MS et la MSI2 moyenne de 21,95 ± 3,36 kg MS. L’estimation de la ration disponible par vache (kg MS herbe + kg MS concentrés) était de 17,25 ± 0,73 kg MS pour le GR1 et de 18,69 ±0,83 kg MS pour le GR2. Les valeurs obtenues par l’analyse NIR sont donc compatibles avec les quantités d’herbe et de concentrés disponibles. Les valeurs estimées par les 2 méthodes étaient hautement corrélées entre elles à part en période de faible ingestion (<10 kgMS). En ce cas la MSI2 semble donner des résultats plus fiables. En conclusion, l’analyse NIR des bouses apparaît une technique intéressante pour l’estimation de la quantité d’herbe ingérée au pâturage. [less ▲]Detailed reference viewed: 125 (12 ULg) Asteroseismic hare & hound exercises: the case of β Cephei starsSalmon, Sébastien ; Montalbán, J.; Miglio, A. et alin Martins, F.; Boissier, S.; Buat, V. (Eds.) et al SF2A-2015: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics. Eds.: F. Martins, S. Boissier, V. Buat, L. Cambrésy, P. Petit, pp.423-428 (2015, December 01)The β Cephei pulsating stars present a unique opportunity to test and probe our knowledge of the interior of massive stars. The information that we can get depends on the quality and number of ... [more ▼]The β Cephei pulsating stars present a unique opportunity to test and probe our knowledge of the interior of massive stars. The information that we can get depends on the quality and number of observational constraints, both seismic and classical ones. The asteroseismology of β Cephei stars proceeds by a forward approach, which can result in multiple solutions, without clear indication on the level of confidence. We seek a method to derive confidence intervals on stellar parameters and investigate how these latter behave depending on the seismic data accessible to the observer. We realise forward modelling with the help of a grid of pre-computed models. We also use Monte-Carlo simulations to build confidence intervals on the inferred stellar parameters. We apply and test this method in a series of hare and hound exercises on a subset of theoretical models simulating observed stars. Results show that a set of 5 frequencies (with knowledge of their associated angular degree) yields precise seismic constraints. Significant errors on the determination of the extent of the central mixed region may result when the theoretical models do not present the same chemical mixture as the observed star. [less ▲]Detailed reference viewed: 17 (3 ULg) Switch from Hashimoto Thyroiditis (HT) to Graves Basedow (GB) disease : a controlled study in a series of 15 patientsMaiga, I; BETEA, Daniela ; Geenen, Vincent et alin Abstract book - 20th Annual Congress of the Belgian Society of Internal Medicine (2015, December)Detailed reference viewed: 64 (4 ULg) How to Discount Deep Reinforcement Learning: Towards New Dynamic StrategiesFrançois-Lavet, Vincent ; Fonteneau, Raphaël ; Ernst, Damien in NIPS 2015 Workshop on Deep Reinforcement Learning (2015, December)Using deep neural nets as function approximator for reinforcement learning tasks have recently been shown to be very powerful for solving problems approaching real-world complexity. Using these results as ... [more ▼]Using deep neural nets as function approximator for reinforcement learning tasks have recently been shown to be very powerful for solving problems approaching real-world complexity. Using these results as a benchmark, we discuss the role that the discount factor may play in the quality of the learning process of a deep Q-network (DQN). When the discount factor progressively increases up to its final value, we empirically show that it is possible to significantly reduce the number of learning steps. When used in conjunction with a varying learning rate, we empirically show that it outperforms original DQN on several experiments. We relate this phenomenon with the instabilities of neural networks when they are used in an approximate Dynamic Programming setting. We also describe the possibility to fall within a local optimum during the learning process, thus connecting our discussion with the exploration/exploitation dilemma. [less ▲]Detailed reference viewed: 153 (42 ULg) Familial thyrogastric autoimmune syndrome : a study of 22 kindredsSid, Sélim ; LUTTERI, Laurence ; BEGUIN, Yves et alin Abstract book - 20th Annual Congress of the Belgian Society of Internal Medicine (2015, December)Detailed reference viewed: 33 (5 ULg) Towards DisNETPerf: a Distributed Internet Paths Performance AnalyzerWassermann, Sarah ; Casas, Pedro; Donnet, Benoît in ACM CoNEXT Student Workshop: Heidelberg 1 décembre 2015 (2015, December)For more than 25 years now, traceroute has demonstrated its supremacy for network-path measurement, becoming the most widely used Internet path diagnosis tool today. A major limitation of traceroute when ... [more ▼]For more than 25 years now, traceroute has demonstrated its supremacy for network-path measurement, becoming the most widely used Internet path diagnosis tool today. A major limitation of traceroute when the destination is not controllable by the user is its inability to measure reverse paths, i.e., the path from a destination back to the source. Proposed techniques to address this issue rely on IP address spoofing, which might lead to security concerns. In this paper we introduce and evaluate DisNETPerf, a new tool for locating probes that are the closest to a distant server. Those probes are then used to collect data from the server point-of-view to the service user for path performance monitoring and troubleshooting purposes. We propose two techniques for probe location, and demonstrate that the reverse path can be measured with very high accuracy in certain scenarios. [less ▲]Detailed reference viewed: 212 (55 ULg) Saint Paul 3D - Acquisition tridimensionnelle de la cathédrale via LaserScanHallot, Pierre in Journée d'étude organisée par l'Institut du Patrimoine Wallon et le Comité Patrimoine et Histoire de la FABI (2015, November 27)Les nouvelles techniques LiDAR (Light Detection and Ranging) et photogrammétriques permettent d’acquérir rapidement un volume important de données 3D. Le terme LiDAR désigne tout instrument de mesure ... [more ▼]Les nouvelles techniques LiDAR (Light Detection and Ranging) et photogrammétriques permettent d’acquérir rapidement un volume important de données 3D. Le terme LiDAR désigne tout instrument de mesure (terrestre, aéroporté) basé sur l’analyse des propriétés d’un faisceau renvoyé vers un émetteur (Poux et al. 2014). Conscient de l’énorme potentiel de ces techniques, l’Unité de Géomatique de l’Université de Liège a réalisé la numérisation de la Cathédrale Saint‐Paul de Liège. Ce projet a été initié via une collaboration avec le Matthieu Piavaux (FUNDP) et financée par le FNRS. Au‐delà des aspects de conservation et d’analyse du bâti, cette numérisation nous a permis de mettre en lumière les principes et limitations de la technique même d’acquisition de données 3D via LiDAR ainsi que ses limitations tant matérielles (sur terrain) que logicielles (traitement des données). Le jeu de donnée obtenu de la numérisation sert également de base fondamentale à un ensemble de projets de recherches (notamment via la réalisation de thèses de doctorats) visant à la segmentation automatique de nuages de points, de reconstruction d’objets tridimensionnelles, d’analyse de qualité d’ajustements. Par la suite, nous détaillons la méthodologie utilisée pour l’acquisition du nuage de points 3D ainsi que les différents principes de calage de nuages. Le chapitre suivant sera consacré à la présentation de résultats ainsi que de premiers développements en termes de segmentation automatique. Finalement, nous dresserons quelques perspectives de représentations. [less ▲]Detailed reference viewed: 45 (8 ULg) Parameter Correlation Analysis in Four Mathematical Models of Left Ventricular RelaxationPironet, Antoine ; MORIMONT, Philippe ; Dauby, Pierre et alin Proceedings of the IEEE-EMBS Benelux chapter 2015 meeting (2015, November 26)Detailed reference viewed: 18 (6 ULg) Cardio-pulmonary mechanics and minimal modelling in critical carede Bournonville, Sébastien; Pironet, Antoine ; Desaive, Thomas et alin Proceedings of the IEEE-EMBS Benelux chapter 2015 meeting (2015, November 26)Detailed reference viewed: 17 (4 ULg) L’Entéropathie Epizootique des lapins : passé, présent et futurMarlier, Didier in ITAVI (Ed.) Proceedings des 16èmes journées de la recherche cunicole (2015, November 24)Detailed reference viewed: 34 (8 ULg) A Lightweight Network Proximity Service Based On Neighborhood ModelsLiao, Yongjun; Du, Wei; Leduc, Guy in 22nd IEEE Symposium on Communications and Vehicular Technology in the Benelux (SCVT) (2015, November 24)This paper proposes a network proximity service based on the neighborhood models used in recommender systems. Unlike previous approaches, our service infers network proximity without trying to recover the ... [more ▼]This paper proposes a network proximity service based on the neighborhood models used in recommender systems. Unlike previous approaches, our service infers network proximity without trying to recover the latency between network nodes. By asking each node to probe a number of landmark nodes which can be servers at Google, Yahoo and Facebook, etc., a simple proximity measure is computed and allows the direct ranking and rating of network nodes by their proximity to a target node. The service is thus lightweight and can be easily deployed in e.g. P2P and CDN applications. Simulations on existing datasets and experiments with a deployment over PlanetLab showed that our service achieves an accurate proximity inference that is comparable to state-of-the-art latency prediction approaches, while being much simpler. [less ▲]Detailed reference viewed: 81 (4 ULg) Determinants of Access to Agricultural Credits for Small Scale Farmers in the Southern Province of RwandaMusabanganji, Edouard ; Antoine, Karangwa; Lebailly, Philippe in Book of Proceedings Sixth International Scientific Agricultural Symposium "AgroSym 2015" (2015, November 15)This study investigated the determinants of financial inclusion for small scale farmers by focusing on the access to formal and informal agricultural credits in the Southern Province of Rwanda. Data were ... [more ▼]This study investigated the determinants of financial inclusion for small scale farmers by focusing on the access to formal and informal agricultural credits in the Southern Province of Rwanda. Data were collected from 310 farmers from Huye and Nyamagabe districts through an open-ended structured questionnaire and analysed using the binary logistic regression method. The major findings, on one hand, showed that among the requested and approved agricultural loans, 87.2% and 12.7% were from informal and formal financial institutions respectively. Among those who accessed agricultural credits, 59.7% were from Huye and 40.3% from Nyamagabe. On the other hand, it was revealed that the household characteristics and the community attributes are the most important determinants. Those household characteristics include household income and expenditure, Ubudehe socio-economic category of the household, off-farm employment and the size of the land owned by the household whereas community attributes involve residence area, transport and informal financial services availability. Regarding farmer characteristics, the education level was found to be the only factor affecting the smallholder farmers' access to agricultural credit. In light of the findings, it was recommended to conduct sensitization sessions focusing on the importance of agricultural credits for smallholder farmers especially in the areas with high level of poverty. In addition, there is need to work on alleviating the formal agricultural credits access barriers, and to conduct a study on the dynamics of informal and formal agricultural credits up take and usage by smallholder farmers to explore all dimensions of financial inclusion in the study area. [less ▲]Detailed reference viewed: 62 (18 ULg) The Roll of Small Businesses in Traditional Handcraft in Rural Development: A Case-Study Of Hanoi Suburban Rattan EnterprisesNguyen, Thi Thu Hien ; Lebailly, Philippe ; NGUYEN, Van Nghienin International Conference on Emerging Challenges, Hanoi 12 november 2015 (2015, November 12)Rural industrial development and new rural development programmes are the main target of Vietnam in the process of industrialization – modernization of the country. To expedite this process, it is ... [more ▼]Rural industrial development and new rural development programmes are the main target of Vietnam in the process of industrialization – modernization of the country. To expedite this process, it is necessary to promote the development and encourage the contributions of small enterprise in general and small enterprise rural in particular because practices in many countries show the important role of small and micro enterprises in local development. This paper presents the initial results of research to understand the economic–social contributions of rural enterprises to local development through the mobilization of local resources as well as establishment of the economic-social relations in local of rattan’s enterprises in the suburb of Hanoi, and then propose some measures to facilitate the operation of enterprises and promote the contribution of rattan’s enterprises for local development. [less ▲]Detailed reference viewed: 50 (10 ULg) Dynamic modeling and control strategies analysis of a novel small CSP biomass plant for cogeneration applications in buildingDesideri, Adriano ; Amicabile, Simone; Alberti, Fabrizio et alin Dynamic modeling and control strategies analysis of a novel small CSP biomass plant for cogeneration applications in building (2015, November 12)A concentrated solar power (CSP) biomass combined heat and power (CHP) system based on organic Rankine cycle (ORC) technology developed in the framework of the EU founded BRICKER project is presented. The ... [more ▼]A concentrated solar power (CSP) biomass combined heat and power (CHP) system based on organic Rankine cycle (ORC) technology developed in the framework of the EU founded BRICKER project is presented. The CHP system coupled with heat recovery ventilation technology and novel insulation material has the aim of reducing the energy consumption of existing building by up to 50%. A simplified approach to implement a dynamic model of the CHP system is proposed. The model is firstly used to investigate the performances of the CHP system control logic under extreme working condition. Secondly, the effectiveness in ensuring safe working conditions and in maximizing the sun power usage of two different solar field control approaches is investigated simulating the developed model over a reference day [less ▲]Detailed reference viewed: 64 (4 ULg) ETUDE DE LA MICROSTRUCTURE DU MORTIER DE CIMENT A TRAVERS LES COURBES DE SORPTIONKahlerras, Loubna ; Belhamri, Azeddine; Fraikin, Laurent et alin kahlerras, loubna (Ed.) Proceedings du séminaire International sur le Génie Climatique et l’Energétique, SIGCLE’2015 (2015, November 09)La présente étude se focalise sur l’étude à travers les courbes de sorption de vapeur d’eau du comportement hydrique du mortier de ciment. Les expériences sont effectuées sur trois types de mortiers dont ... [more ▼]La présente étude se focalise sur l’étude à travers les courbes de sorption de vapeur d’eau du comportement hydrique du mortier de ciment. Les expériences sont effectuées sur trois types de mortiers dont la seule différence est dans le rapport eau/ciment (E/C = 0,4, 0,5 et 0,6) afin d’étudier l’influence de ce rapport sur la microstructure du matériau. La méthode dynamique est utilisée pour l’obtention des isothermes de sorption en utilisant le « DVS (dynamic vapour sorption) Des échantillons en forme de concassât de quelques millimètres de diamètre sont utilisés, l’étude est complété par la porosité à mercure. Deux principaux modes poreux sont déterminés. [less ▲]Detailed reference viewed: 32 (5 ULg) Adaptive Façades System Assessment: An initial reviewAttia, Shady ; Favoino, Fabio; Loonen, Roel et alin Advanced Building Skins (2015, November 03)The assessment of adaptive facades presents a challenge because there is no established evaluation strategy to systematically reach this goal and many of the available building energy standards and codes ... [more ▼]The assessment of adaptive facades presents a challenge because there is no established evaluation strategy to systematically reach this goal and many of the available building energy standards and codes have limited applicability for such advanced facades system. This paper reviews current evaluation methods for assessing adaptive facades system through a literature review. It also discusses occupant behaviour, post occupancy evaluation and commissioning issues and presents the procedures. The paper is part of the activities of Working Group 3 in COST Action TU1403 - Adaptive Facades Network. So far we could not find a protocol for assessment of adaptive facades. The reviewed literature is scattered lacking a focus on adaptive facades. There is no agreement on defining what are adaptive facades (sometimes named intelligent, smart, dynamic). We could define specialized technology monitoring techniques to assess the performance of technologies such as fabric-integrated solutions (e.g. electrochromic glazing, phase-change materials, building-Integrated Photovoltaics with heat recovery (BIPV/T, shade shutters) and advanced controls. The review is used to identify gaps in existing assessment methods and helps develop strategies for the holistic evaluation and assessment of adaptive facade systems as part of high performance buildings. [less ▲]Detailed reference viewed: 446 (12 ULg) Two Types of Aurora on Mars as Observed by MAVEN's Imaging UltraViolet SpectrographSchneider, Nicholas M.; Deighan, J.; Jain, S. K. et alin AAS/Division for Planetary Sciences Meeting Abstracts (2015, November 01)The Imaging UltraViolet Spectrograph (IUVS) on the MAVEN spacecraft has detected two distinct types of auroral emission on Mars. First, we report the discovery of a low altitude, diffuse aurora spanning ... [more ▼]The Imaging UltraViolet Spectrograph (IUVS) on the MAVEN spacecraft has detected two distinct types of auroral emission on Mars. First, we report the discovery of a low altitude, diffuse aurora spanning much of Mars’ northern hemisphere coincident with a solar energetic particle outburst. IUVS observed northerly latitudes during late December 2014, detecting auroral emission in virtually all nightside observations for ~5 days spanning virtually all geographic longitudes. The vertical profile showed emission down to ~70 km altitude (1 microbar), deeper than confirmed at any other planet. The onset and duration of emission coincide with the observed arrival of solar energetic particles up to 200 keV precipitating directly and deeply into the atmosphere. Preliminary modeling of the precipitation, energy deposition and spectral line emission yields good matches to the observations. These observations represent a new class of planetary auroras produced in the Martian middle atmosphere. Given minimal magnetic fields over most of the planet, Mars is likely to exhibit aurora more globally than Earth.Second, we confirm the existence of small patches of discrete aurora near crustal magnetic fields in Mars' southern hemisphere, as observed previously by SPICAM on Mars Express (Bertaux et al., Nature, 435, 790-794 (2005)). IUVS observed southern latitudes in July and August 2015, detecting discrete auroral emission in ~1% of suitable observations. Limb scans resolved both vertically and along-slit indicate this type of auroral emission was patchy on the scale of ~40 km, and located at higher altitudes ~140 km. The higher altitudes imply a lower energy of precipitating particles. The mix of spectral emissions also differed signficiantly from the diffuse aurora, indicating different excitation and quenching processes.We will discuss the observed properties of the aurora and associated charged particle precipitation, as well as the broader implications of this high-energy deposition into Mars' atmopshere. [less ▲]Detailed reference viewed: 9 (1 ULg) Structure and variability of the Martian upper atmosphere: Ultraviolet dayglow observations by MAVEN/IUVSDeighan, Justin; Jain, Sonal K.; Lo, Daniel Y. et alin AAS/Division for Planetary Sciences Meeting Abstracts (2015, November 01)Mars has been studied extensively at ultraviolet wavelengths starting from Mariner 6 and 7, Mariner 9, and more recently by SPICAM aboard Mars Express. The results from these measurements reveal a large ... [more ▼]Mars has been studied extensively at ultraviolet wavelengths starting from Mariner 6 and 7, Mariner 9, and more recently by SPICAM aboard Mars Express. The results from these measurements reveal a large variability in the composition and structure of the Martian upper atmosphere. However, due to the lack of simultaneous measurements of energy input (such as solar electromagnetic and particle flux), and limitations in the observation geometry and data itself, this variability is still not fully understood.We report a comprehensive study of Mars dayglow observations by the Imaging Ultraviolet Spectrograph (IUVS) aboard the Mars Atmosphere and Volatile EvolutioN (MAVEN) satellite, focusing on vertical and global upper atmospheric structure and seasonal variability. The dayglow emission spectra show features similar to previous UV measurements at Mars. IUVS has detected a second, low-altitude peak in the emission profile of OI 297.2 nm, confirming the prediction that the absorption of solar Lyman alpha emission is an important energy source there. We find a significant drop in thermospheric scale height and temperature between Ls = 218° and Ls = 337 - 352°, attributed primarily to the decrease in solar activity and increase in heliocentric distance. The CO[SUB]2[/SUB][SUP]+[/SUP] UVD peak intensity is well correlated with simultaneous observations of solar 17 - 22 nm irradiance at Mars by Extreme Ultraviolet Monitor (EUVM) aboard MAVEN. Variations of the derived CO[SUB]2[/SUB] density also exhibit significant persistent global structure with longitudinal wavenumbers 1, 2 and 3 in a fixed local solar time frame, pointing to non-migrating atmospheric tides driven by diurnal solar heating. We will present and discuss the variability in Martian UV dayglow, its dependence on solar EUV flux, and the importance of IUVS observations in our current understanding of Mars’ thermosphere. [less ▲]Detailed reference viewed: 11 (1 ULg) Mars atmospheric escape constrained using MAVEN IUVS coronal observationsChaffin, Michael S.; Deighan, Justin; Chaufray, Jean-Yves et alin AAS/Division for Planetary Sciences Meeting Abstracts (2015, November 01)Every planetary atmosphere is capped by a corona: an extended, extremely tenuous region where collisions are negligible and particles follow ballistic trajectories. At Mars, the corona is especially ... [more ▼]Every planetary atmosphere is capped by a corona: an extended, extremely tenuous region where collisions are negligible and particles follow ballistic trajectories. At Mars, the corona is especially extended due to the low gravity of the planet, and a large number of coronal particles are on escaping trajectories. Such escape has played a critical role in the history of the Mars system, likely removing a substantial fraction of the water initially present on the planet, but the mechanism and magnitude of this escape remains poorly constrained. Currently in orbit at Mars, MAVEN's Imaging Ultraviolet Spectrograph (IUVS) is mapping the distribution of oxygen and hydrogen above 200 km at a high spatial and temporal cadence, revealing a dynamic corona in unprecedented detail. Results will be presented demonstrating that the H in the corona is not spherically symmetric in its distribution, and can potentially be used as a tracer of thermospheric general circulation; and that non-thermal "hot" O (in contrast with more spatially confined "cold" thermal O) is ionospherically sourced with a characteristic energy of 1.1 eV and responds to solar EUV forcing. These results will be interpreted in terms of their impact on our current understanding of how atmospheric escape operates today. We will also discuss how these processes may have acted in the past to deplete Mars' initial water inventory, potentially altering the redox balance of the planet and atmosphere through differential escape of H and O. [less ▲]Detailed reference viewed: 5 (1 ULg) Gustave Serrurier-Bovy : un architecte à l’aube de la modernitéFolville, Xavier in Art nouveau et écologie : Mélanges (2015, November 01)Abstract A l'extrême fin du 19e siècle, l'Art nouveau s’épanouit sous des formes diversifiées, parfois contradictoires, mais partageant généralement la même volonté de rompre avec l'académisme et l ... [more ▼]Abstract A l'extrême fin du 19e siècle, l'Art nouveau s’épanouit sous des formes diversifiées, parfois contradictoires, mais partageant généralement la même volonté de rompre avec l'académisme et l'historicisme du siècle finissant. Parmi les acteurs de cet Art nouveau, certains ne retiennent que le côté décoratif d’une nouvelle esthétique. Très tôt cependant, au cœur même de ce mouvement d’avant-garde, apparaissent les prémices du renouvellement qui le condamnera et conduira au Modernisme. Quelques travaux de Gustave Serrurier – mobilier ou architecture – méritent d’être observés sous cet angle. [less ▲]Detailed reference viewed: 56 (19 ULg) Gustave Serrurier-Bovy, architecte, commerçant et industrielFolville, Xavier in Art nouveau et écologie : Mélanges (2015, November 01)« Il ne faut pas travailler pour un monde qui disparaît mais pour un monde nouveau dont on peut prévoir l’avènement ». Architecte par vocation et formation, puis commerçant, ensuite créateur et industriel ... [more ▼]« Il ne faut pas travailler pour un monde qui disparaît mais pour un monde nouveau dont on peut prévoir l’avènement ». Architecte par vocation et formation, puis commerçant, ensuite créateur et industriel, le Liégeois Gustave Serrurier (1858-1910) est rapidement convaincu de la nécessité de lier l’architecture aux arts décoratifs. Il le fait avec la conviction politique et esthétique qu’une production industrialisée permettra de donner au plus grand nombre l’environnement artistique auquel tout être peut prétendre. Il pressent que le temps de l’artisanat est en passe d’être révolu et équipe progressivement ses ateliers de machines modernes. Si ses premières créations restent empreintes de l’esprit constructif des artisans néogothiques, s’il emploie ensuite des jeux de lignes courbes, tendues et maîtrisées, le début du XXe siècle le voit évoluer vers toujours plus de simplicité constructive et plus de rigueur géométrique. Grâce au mobilier, aux objets et aux aménagements d’intérieurs qu’il crée et fait réaliser par la centaine d’ouvriers de ses ateliers liégeois, sa firme prend rapidement une ampleur internationale et se fait remarquer dans les expositions universelles comme celle de Saint-Louis (U.S.A.) en 1904. Anticipant sur ce que seront les motivations d’un Bauhaus, ses préoccupations sociales et esthétiques conduisent Serrurier à imaginer un mobilier de plus en plus économique, rationnellement construit, adapté à l’usage et au lieu de destination, par exemple pour une habitation ouvrière à l’Exposition universelle de Liège en 1905. Là, un mobilier en orme équipe la salle commune égayée d’une frise au pochoir et de rideaux de lin garnis de carrés colorés. On y remarque un meuble à usage multiple, tout à la fois armoire, secrétaire et bibliothèque, sans autre décor que sa composition équilibrée ; banc, table et chaises sont faits d’éléments assemblés par des vis apparentes. C’est à cette même époque que Serrurier développe la ligne “Silex”, particulièrement représentative ; conçue de façon tout à fait originale et pragmatique, exécutée en bois blanc et décorée au pochoir, la plupart des assemblages de menuiserie sont remplacés par des vis apparentes. La découpe des planches se montre économe en matière. Une chaise, objet d’utilité commune, se doit d’être robuste, ergonomique et peu coûteuse à produire : ici, la production en série est aisée et pourra être assurée dans ses ateliers équipés de scies mécaniques et autres machines-outils. A l’examen, une chaise de cette série exprime bien les qualités de designer industriel de son concepteur et le place à l’avant-garde de son temps ; elle illustre aussi ses ambitions, tant sociales qu’esthétiques, et sa volonté d’un « art pour tous ». [less ▲]Detailed reference viewed: 77 (6 ULg) New Observations of Molecular Nitrogen by the Imaging Ultraviolet Spectrograph on MAVENStevens, Michael H.; Evans, J. S.; Schneider, Nicholas M. et alin AAS/Division for Planetary Sciences Meeting Abstracts (2015, November 01)The Martian ultraviolet dayglow provides information on the basic state of the Martian upper atmosphere. The Imaging Ultraviolet Spectrograph (IUVS) on NASA’s Mars Atmosphere and Volatile Evolution (MAVEN ... [more ▼]The Martian ultraviolet dayglow provides information on the basic state of the Martian upper atmosphere. The Imaging Ultraviolet Spectrograph (IUVS) on NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) mission has observed Mars at mid and far-UV wavelengths since its arrival in September 2014. In this work, we describe a linear regression method used to extract components of UV spectra from IUVS limb observations and focus in particular on molecular nitrogen (N[SUB]2[/SUB]) photoelectron excited emissions. We identify N[SUB]2[/SUB] Lyman-Birge-Hopfield (LBH) emissions for the first time at Mars and we also confirm the tentative identification of N[SUB]2[/SUB] Vegard-Kaplan (VK) emissions. We compare observed VK and LBH limb radiance profiles to model results between 90 and 210 km. Finally, we compare retrieved N[SUB]2[/SUB] density profiles to general circulation (GCM) model results. Contrary to earlier analyses using other satellite data that indicated N[SUB]2[/SUB] densities were a factor of three less than predictions, we find that N[SUB]2[/SUB] abundances exceed GCM results by about a factor of two at 130 km but are in agreement at 150 km. [less ▲]Detailed reference viewed: 5 (1 ULg) Pièges à considérer lors de l’évaluation isocinétiqueCroisier, Jean-Louis ; Kaux, Jean-François ; Crielaard, Jean-Michel et alin Abstract book des XVIIèmes RENCONTRES ISOCINETIQUES DE MEDIMEX (2015, November)Detailed reference viewed: 93 (9 ULg) Etude technique et dendrochronologique de la roue découverte dans le puits du château fort de logneHoffsummer, Patrick ; Delye, Emmanuel ; Wéry, Benoitin Frébutte, Christian (Ed.) Pré-actes des Journées d'Archéologie en Wallonie (2015, November)Detailed reference viewed: 41 (9 ULg) Evaluation isocinétique et fonctionnelle de la rupture de coiffe des rotateurs non opéréeForthomme, Bénédicte ; Schwartz, Cédric ; MAHIEU, Xavier et alin Abstract book des XVIIèmes RENCONTRES ISOCINETIQUES DE MEDIMEX (2015, November)Detailed reference viewed: 168 (25 ULg) Improving the Installation of Offshore Wind Farms by the use of Discrete Event SimulationMuhabie, Yohannes Tekle ; Caprace, Jean-David ; Petcu, Cristian et alin Improving the Installation of Offshore Wind Farms by the use of Discrete Event Simulation (2015, November)The offshore wind energy development is highly affected by the condition of the weather at sea. Hence, it demands a well-organized planning of the overall process starting from the producers’ sites until ... [more ▼]The offshore wind energy development is highly affected by the condition of the weather at sea. Hence, it demands a well-organized planning of the overall process starting from the producers’ sites until the offshore site where the turbines will finally be installed. The planning phase can be supported with the help of Discrete Event Simulation (DES) where weather restrictions, distance matrix, vessel characteristics and assembly scenarios are taken into account. The purpose of this paper is to simulate the overall transport, assembly and installation of the wind turbine components at sea. The analysis is carried out through DES considering both the real historical weather data (wind speed and wave height) and probabilistic approach. Results of the study, applied to the real Offshore Wind Farm (OWF) configuration, are showing a good agreement between the two proposed models. The results point out that the probabilistic approach is highly affected by the semi-random numbers used to model the stochastic behavior of the input variable so that several iterations (200 to 400) are required to reach the convergence of the simulation outputs. We suggest that seasonality of the outputs of both models are preserved, i.e. the variation of the results depending on the variation of the weather along the year. These findings provide a new framework to address risks and uncertainties in OWF installations. [less ▲]Detailed reference viewed: 111 (18 ULg) MASH2-0 electromechanical sigma-delta modulator for capacitive MEMS sensors with digital filter calibration using simulated annealingAlmutairy, Bader; Kraft, Michael in Proceedings of the IEEE Sensors Conference, Nov. 2015 (2015, November)Detailed reference viewed: 8 (3 ULg) Sensor based on the mode-localization effect in electrostatically-coupled MEMS resonators fabricated using an SOI processWood, Graham; Zhao, Chun; Pu, Suan et alin Proceedings of the IEEE Sensors Conference, Nov. 2015 (2015, November)Detailed reference viewed: 12 (3 ULg) ERT monitoring of water infiltration process through a landfill cover layerDumont, Gaël ; Pilawski, Tamara ; Robert, Tanguy et alin Berichte der Geologischen Bundesanstalt, 112 (2015, November)Detailed reference viewed: 35 (7 ULg) Impact of model reduction on the dynamic simulation of a micro-scale concentrated solar power system integrated with a thermal storageDickes, Rémi ; Wéber, Noé ; Lemort, Vincent et alin Proceedings of the ISES Solar World Congress 2015 (2015, November)Because of the intermittent nature of solar irradiances, micro-scale solar thermal power systems almost never operate in nominal operating conditions. They are characterized by strong transients and ... [more ▼]Because of the intermittent nature of solar irradiances, micro-scale solar thermal power systems almost never operate in nominal operating conditions. They are characterized by strong transients and require robust, fast and accurate dynamic simulation tools to permit a proper evaluation of their performance. Model reduction, i.e. the simplification of detailed models, is an attractive method to improve the computational efficiency while simulating such systems. In this context, a µCSP plant featuring a solar field of parabolic troughs, a thermocline storage and a 5kWe power unit is investigated. Both the solar field and the thermocline storage are modeled with complex and simplified methods. The whole power plant is simulated under identical operating condition and deviations between the simulation results are analyzed. Benefits and limitations of the current modeling approach are assessed. Improvements for the modeling of the thermocline storage are identified, implemented and validated. The Modelica language is used as simulation tool and the models developed in this work are integrated in the open-source ThermoCycle library. [less ▲]Detailed reference viewed: 114 (16 ULg) Importance of microbiota in pets.Diez, Marianne in Proceedings of the Petfood Day Tereos Syral (2015, October 30)Detailed reference viewed: 30 (6 ULg) Sensitivity of structures to fire decay phases: quantitative comparison of structural components made of different materialsGernay, Thomas in Wald, F.; Burgess, I.; Jelcic Rukavina, M. (Eds.) et al Proceedings of the Int. Conf. ASFE in Dubrovnik, 15-16 October 2015 (2015, October 16)This work presents an analysis of the behaviour of different structural members under natural fires, with the aim to characterize their sensitivity to the fire decay phase. Thermo-mechanical numerical ... [more ▼]This work presents an analysis of the behaviour of different structural members under natural fires, with the aim to characterize their sensitivity to the fire decay phase. Thermo-mechanical numerical simulations based on the non-linear finite element method are conducted using the parametric fire model of Eurocode to represent the natural fires. Results show that, for all the studied members (column, beam) and materials (reinforced concrete, steel, timber), structural failure during or after the cooling phase of a fire is a possible event. The major factors that promote delayed structural failure are the thermal inertia and the constituting material of the member. An indicator is proposed to quantify the propensity to delayed failure for structural members under natural fire. This work enhances the understanding of the structural behaviour under natural fires and has implications for the safety of the fire brigades and people proceeding to a building inspection after a fire. [less ▲]Detailed reference viewed: 43 (13 ULg) L'approche typologique processuelle comme modèle systémique de lecture des représentations graphiques dans les concours d'architectureBoutemadja, Abdelkader ; Reiter, Sigrid in ESS 2015 (2015, October 16)Dans le cadre de cet article nous allons expliquer la démarche entreprise pour essayer de mieux comprendre les productions actuelles d’image d’architecture. Pour ce faire, nous avons effectué des ... [more ▼]Dans le cadre de cet article nous allons expliquer la démarche entreprise pour essayer de mieux comprendre les productions actuelles d’image d’architecture. Pour ce faire, nous avons effectué des recherches sur deux niveaux complémentaire ; la systémique et la sémiotique. Si la deuxième nous permet d’utiliser des outils concrets d’analyse de l’image la première nous offre les bases théoriques pour expliquer l’objet d’étude qu’est l’image. Nous nous attarderons dans cet article sur les emprunts fait à la typologie processuelle comme approche systémique étudiants le territoire et le bâti et plus particulièrement sur la notion de moment de crise point de départ de la compréhension d’un phénomène aussi complexe que la représentation graphique du projet. [less ▲]Detailed reference viewed: 101 (11 ULg) Analysis of a concrete building exposed to natural fireSauca, Ana ; Gernay, Thomas ; Robert, Fabienne et alin Wald, F.; Burgess, I.; Jelcic Rukavina, M. (Eds.) et al Proceedings of the Int. Conf. ASFE in Dubrovnik, 15-16 October 2015 (2015, October 16)In this paper is presented the analysis of a concrete building exposed to OZone fire. The temperature development in the elements and the structural behaviour were calculated in SAFIR using beam elements ... [more ▼]In this paper is presented the analysis of a concrete building exposed to OZone fire. The temperature development in the elements and the structural behaviour were calculated in SAFIR using beam elements for the columns and beams and shell elements for the floor slabs. The first floor was modelled and the effects of action from the upper storeys are applied as external loads. It is shown how the numerical analysis allows understanding the behaviour of the structure when exposed to a natural fire until complete cooling by analysing the evolution of displacements, the distributions of bending moments in the beams, the membrane forces in the slab, and the stresses in the elements. All this detailed information would not be available from an experimental test. [less ▲]Detailed reference viewed: 82 (17 ULg) TESTING AND MODELING A VANE EXPANDER USED IN AN ORC WORKING WITH HEXAMETHYLDISILOXANE (MM)Vodicka, Vaclav; Guillaume, Ludovic ; Mascuch, Jakub et alin ASME ORC 2015 (2015, October 15)Detailed reference viewed: 27 (6 ULg) TOWARDS THE OPTIMAL OPERATION OF AN ORGANIC RANKINE CYCLE UNIT BY MEANS OF MODEL PREDICTIVE CONTROL AndresHernandez Naranjo, Jairo Andres ; Desideri, Adriano ; Ionescu, Clara et alin TOWARDS THE OPTIMAL OPERATION OF AN ORGANIC RANKINE CYCLE UNIT BY MEANS OF MODEL PREDICTIVE CONTROL (2015, October 14)In this paper the optimal operation of an Organic Rankine Cycle (ORC) unit is investigated both in terms of energy production and safety conditions. Simulations on a validated dynamic model of a real re ... [more ▼]In this paper the optimal operation of an Organic Rankine Cycle (ORC) unit is investigated both in terms of energy production and safety conditions. Simulations on a validated dynamic model of a real re- generative ORC unit, are used to illustrate the existence of an optimal evaporating temperature which maximizes energy production for some given heat source conditions. This idea is further extended using a perturbation based Extremum Seeking (ES) algorithm to find online the optimal evaporating tempera- ture. Regarding safety conditions we propose the use of the Extended Prediction Self-Adaptive Control (EPSAC) approach to constrained Model Predictive Control (MPC). Since it uses input/output models for prediction, it avoids the need of state estimators, making of it a suitable tool for industrial applica- tions. The performance of the proposed control strategy is compared to PID-like schemes. Results show that EPSAC-MPC is a more effective control strategy as it allows a safer and more efficient operation of the ORC unit, as it can handle constraints in a natural way, operating close to the boundary conditions where power generation is maximized. [less ▲]Detailed reference viewed: 46 (2 ULg) Tu gme 10: Efficiency of shaft sealing for co2 sequestration in coal minesBertrand, François ; Charlier, Robert ; Collin, Frédéric et alin International Workshop on Geomechanics and Energy: The Ground as Energy Source and Storage (2015, October 13)This work examined the efficiency of a shaft sealing system for the CO2 sequestration in abandoned coal mines. The particular case of the coal mine of Anderlues was considered. The performed simulation ... [more ▼]This work examined the efficiency of a shaft sealing system for the CO2 sequestration in abandoned coal mines. The particular case of the coal mine of Anderlues was considered. The performed simulation took into account the anisotropic behaviour of shale and the presence of coalbeds. [less ▲]Detailed reference viewed: 98 (28 ULg) Analysis and comparison of different modeling approaches for the simulation of a micro-scale organic Rankine cycle power plantDickes, Rémi ; Dumont, Olivier ; Legros, Arnaud et alin Proceedings of the 3rd International Seminar on ORC Power Systems (2015, October 12)When simulating a system based on the organic Rankine cycle (ORC), different modeling methods can be used to predict its performance. Each method is characterized by advantages, limitations and a level of ... [more ▼]When simulating a system based on the organic Rankine cycle (ORC), different modeling methods can be used to predict its performance. Each method is characterized by advantages, limitations and a level of complexity. This contribution aims to assess the impact of the modeling approach on the performance prediction of ORC systems. To this end, a 2.8 kWe ORC unit is investigated as case study. In this paper, the components of the test bench are modeled using different approaches of increasing complexity and each model is calibrated using experimental data from the test rig. The goodness of fit as well as the benefits and limitations of each modeling methods are analyzed and discussed. [less ▲]Detailed reference viewed: 192 (24 ULg) A new proposal for predicting the bearing resistance of bolted connections for tubular racking structuresArmenante, Vittorio; Latour, Massimo; Rizzano, Gianvittorio et alin Proceeding of the XXV Congresso CTA (2015, October)In the field of shelving structures for the storage of goods realized adopting tubular members, an interesting connection typology to be used to fasten the vertical columns to the beams is represented by ... [more ▼]In the field of shelving structures for the storage of goods realized adopting tubular members, an interesting connection typology to be used to fasten the vertical columns to the beams is represented by bolted connections with long bolts in shear. With reference to this kind of connections, the authors have already performed a wide experimental and numerical investigation highlighting the occurrence, in this specific case, of local buckling phenomena. In this paper, the attention is focused on the influence of local buckling on the connection resistance, which is neglected by the current version of EC3 in the prediction of the resistance of shear connections of plates. In particular, starting from the results of the experimental and numerical analyses previously performed, in the present paper a formulation for predicting the bearing resistance of the examined connection able to account for the phenomenon of local instability is set up. [less ▲]Detailed reference viewed: 47 (1 ULg) Trade secrets: Overlap with restraint of trade, aspects of enforcement - BelgiumKaesmacher, Dominique; Vanbrabant, Bernard ; Thoumsin, Pierre-Yves et alin AIPPI Yearbook 2014 (2015, October)Detailed reference viewed: 28 (1 ULg) Time Ordering Shuffling for Improving Background SubtractionLaugraud, Benjamin ; Latour, Philippe ; Van Droogenbroeck, Marc in Advanced Concepts for Intelligent Vision Systems (2015, October)By construction, a video is a series of ordered frames, whose order is defined at the time of the acquisition process. Background subtraction methods then take this input video and produce a series of ... [more ▼]By construction, a video is a series of ordered frames, whose order is defined at the time of the acquisition process. Background subtraction methods then take this input video and produce a series of segmentation maps expressed in terms of foreground objects and scene background. To our knowledge, this natural ordering of frames has never been questioned or challenged. In this paper, we propose to challenge, in a prospective view, the natural ordering of video frames in the context of background subtraction, and examine alternative time orderings. The idea consists in changing the order before background subtraction is applied, by means of shuffling strategies, and re-ordering the segmentation maps afterwards. For this purpose, we propose several shuffling strategies and show that, for some background subtraction methods, results are preserved or even improved. The practical advantage of time shuffling is that it can been applied to any existing background subtraction seamlessly. [less ▲]Detailed reference viewed: 234 (98 ULg) Etude et prévalence des troubles neuroendocriniens dans une série de 65 patients avec dommages cérébraux post-traumatiques (TBI) recrutés à partir de la médecine d'expertiseVALDES SOCIN, Hernan Gonzalo ; Potorac, J; Matagne et alin Abstract book - Annales d'Endocrinologie - 32ème Congrès de la Société Française d'Endocrinologie (2015, October)Detailed reference viewed: 56 (2 ULg) Is the Darwin´s “Abominable Mystery” still a mystery?Cascales-Miñana, Borja ; Cleal, Chris J.; Gerrienne, Philippe in Proceedings of the XXXI Annual Meeting of the Spanish Society of Palaeontology (abstract book) (2015, October)Detailed reference viewed: 13 (3 ULg) Etude moléculaire du gène AIP sur plus de 1400 individus atteints d'adénome hypophysaireCASTERMANS, Emilie ; Auriemma, R; Rostomyan, Liliya et alin Abstract book - Annales d'Endocrinologie - 32ème Congrès de la Société Française d'Endocrinologie (2015, October)Detailed reference viewed: 37 (5 ULg) Syndrome thyrogastrique autoimmun (STGA) : la gastrite auto-immune isolée (GAI) et celle associée à Helicobacter (Hp) ont des caractéristiques anatomocliniques différentesVALDES SOCIN, Hernan Gonzalo ; MESUREUR, Thierry ; POLUS, Marc et alin Abstract book - Annales d'Endocrinologie - 32ème Congrès de la Société Française d'Endocrinologie (2015, October)Detailed reference viewed: 69 (7 ULg) A Generic Feature Selection Method for Background Subtraction Using Global Foreground ModelsBraham, Marc ; Van Droogenbroeck, Marc in Advanced Concepts for Intelligent Vision Systems (ACIVS), Catania 26-29 October 2015 (2015, October)Over the last few years, a wide variety of background subtraction algorithms have been proposed for the detection of moving objects in videos acquired with a static camera. While much effort have been ... [more ▼]Over the last few years, a wide variety of background subtraction algorithms have been proposed for the detection of moving objects in videos acquired with a static camera. While much effort have been devoted to the development of robust background models, the automatic spatial selection of useful features for representing the background has been neglected. In this paper, we propose a generic and tractable feature selection method. Interesting contributions of this work are the proposal of a selection process coherent with the segmentation process and the exploitation of global foreground models in the selection strategy. Experiments conducted on the ViBe algorithm show that our feature selection technique improves the segmentation results. [less ▲]Detailed reference viewed: 184 (76 ULg) Hyperthyroïdie sur maladie de Basedow survenant après une hypothyroïdie de Hashimoto : étude clinique et biologique sur 10 casMaiga, Ibrahima ; BETEA, Daniela ; Beckers, Albert et alin Abstract book - Annales d'Endocrinologie - 32ème Congrès de la Société Française d'Endocrinologie (2015, October)Detailed reference viewed: 56 (11 ULg) Perinatal Group B streptococcal DiseaseMelin, Pierrette in Melin, Pierrette (Ed.) Les infections de la sphères génitales (2015, October)Detailed reference viewed: 33 (2 ULg) Une forme compliquée d'hypercalcémie hypocalciurique familialePotorac, Iulia ; BETEA, Daniela ; MALAISE, Olivier et alin Abstract book - Annales d'Endocrinologie - 32ème Congrès de la Société Française d'Endocrinologie (2015, October)Detailed reference viewed: 38 (6 ULg) How T2-weighted signal intensity of GH-secreting adenomas correlates wit response to primary somatostatin analogue therapy in acromegalyPotorac, Iulia ; PETROSSIANS, Patrick ; Daly, Adrian et alin Abstract book - 25th meeting of the Belgian Endocrine Society (2015, October)Detailed reference viewed: 34 (6 ULg) We gme P08: Fiber-optic temperature profiles analysis for closed-loop geothermal systems-a case studyRadioti, Georgia ; Delvoie, Simon ; Sartor, Kevin et alin Second EAGE Workshop on Geomechanics and Energy: The ground as energy source and storage (2015, October)In order to study the behaviour of shallow closed-loop geothermal systems four borehole heat exchangers equipped with fiber optics were installed on the campus of the University of Liege (Liege, Belgium ... [more ▼]In order to study the behaviour of shallow closed-loop geothermal systems four borehole heat exchangers equipped with fiber optics were installed on the campus of the University of Liege (Liege, Belgium) over a surface area of 32m². This paper presents the analysis of continuous, high-resolution temperature profiles measured along the boreholes length. The undisturbed ground temperature measurements indicate heat loss from ground structures located close to the boreholes. A 3D numerical model is presented to reproduce the measured temperature profiles. Temperature profiles during hardening of the grouting material indicate extended fractured zones in the rock mass. Temperature measurements during the recovery phase of a Distributed Thermal Response Test indicate the succession of rock layers with different mineral content. The results are in good agreement with those of the borehole televiewer logging method. The presented analysis could provide information on bedrock heterogeneity, on the anisotropic thermal behaviour of the rock mass and on the ground temperature variations due to heat loss from ground structures. These information could significantly contribute to the long-term behaviour prediction of the geothermal system and the geothermal reservoir potential. [less ▲]Detailed reference viewed: 86 (27 ULg) Hyperparathyroïdie primaire familiale isolée - corrélation génotype - phénotype des mutations MEN 1?Potorac, Iulia ; BETEA, Daniela ; PETROSSIANS, Patrick et alin Abstract book - Annales d'Endocrinologie - 32ème Congrès de la Société Française d'Endocrinologie (2015, October)Detailed reference viewed: 52 (9 ULg) Une lésion sellaire d'évolution hautement fluctuanteBETEA, Daniela ; Potorac, Iulia ; BONNEVILLE, Jean-François et alin Abstract book - Annales d'Endocrinologie - 32ème Congrès de la Société Française d'Endocrinologie (2015, October)Detailed reference viewed: 40 (4 ULg) Hypogonadisme hypogonadotrope normosmique familial : identification d'une nouvelle mutation c.1664-2A> T du gène FGFR1VALDES SOCIN, Hernan Gonzalo ; Pintiaux, Axelle ; LIBIOULLE, Cécile et alin Abstract book - Annales d'Endocrinologie - 32ème Congrès de la Société Française d'Endocrinologie (2015, October)Detailed reference viewed: 30 (4 ULg) Potential damping of extreme floods in the river Meuse between Ampsin (B) and the Belgian-Dutch borderBruwier, Martin ; Archambeau, Pierre ; Erpicum, Sébastien et alin Lenders, H.J.R.; Collas, F.P.L.; Geerling, G.W. (Eds.) et al Bridging gaps between river science, governance and management. Book of Abstracts NCR-Days 2015 (2015, October)In the framework of the Interreg IVB project AMICE, hydraulic modelling of floods in the river Meuse was performed by coordinating existing models (Dewals et al. 2012a). The influence of climate change ... [more ▼]In the framework of the Interreg IVB project AMICE, hydraulic modelling of floods in the river Meuse was performed by coordinating existing models (Dewals et al. 2012a). The influence of climate change scenarios was incorporated indirectly in the simulations through a transnational hydrological scenario (Drogue et al. 2010; Dewals et al. 2013). For a “wet” future climate, this scenario assumes that the peak discharge Q100 of the 100-year flood would increase by 15 % for the time horizon 2021-2050 and by 30 % for the time horizon 2071-2100. However, the design discharge currently used for planning in the Netherlands is higher than those considered to date in the AMICE project. From this perspective, it becomes relevant to analyse flood scenarios corresponding to a peak discharge above Q100+30 %, referred to hereafter as an “extreme” flood. The aim of the study is to give an appreciation of the potential damping of one extreme flood scenario along the river Meuse between Ampsin (Belgium) and the Belgian-Dutch border (Figure 1). This analysis is based on the hydraulic model WOLF 2D (Erpicum et al. 2010) applied to a coarse grid with simplifications in the schematisation. The hydraulic model WOLF 2D has been already used in several studies to simulate floods (Ernst et al. 2010; Beckers et al. 2013, Bruwier et al. 2015, Detrembleur et al. 2015). The coarsening of the grid for simulating the extreme flood scenario is necessary to preserve the computational efficiency, since both the total flood duration and the inundation extents (hence the number of grid cells) increase considerably between the Q100 + 30 % scenario considered previously and the extreme scenario considered here. [less ▲]Detailed reference viewed: 48 (17 ULg) Primeros datos sobre las interacciones planta-insecto del yacimiento de La Val (Estadilla, Huesca, NE Spain)Moreno-Domiguez, Rafael; Cascales-Miñana, Borja ; Santos, Artai I et alin Proceedings of the XXXI Annual Meeting of the Spanish Society of Palaeontology (abstract book) (2015, October)Detailed reference viewed: 32 (0 ULg) Nouvelle mutation du Fibroblast Growth Factor Receptor 1 (FGFR1)-cause d'hypogonadisme hypogonadotrope idiopathique normosmiquePotorac, Iulia ; Chachati, Anne-Sophie ; Debray, François-Guillaume et alin Abstract book- Annales d'Endocrinologie - 32ème Congrès de la Société Française d'Endocrinologie (2015, October)Detailed reference viewed: 19 (4 ULg) SILURIAN – DEVONIAN OF THE ORIENTAL ALGERIAN SAHARA: implication of new field data from Tassili n'Ajjer outcrops and Berkine Basin (SE, Algeria) for shale gas exploration.Djouder, Hocine ; Boulvain, Frédéric ; Da Silva, Anne-Christine et alin EPC'2015 THE THIRTEENTH TUNISIAN PETROLEUM EXPLORATION & PRODUCTION CONFERENCE (2015, October)The Silurian – Devonian succession have been deposited in wide sags and sub-basins in a cratonic setting, along the northwestern passive margin of the Gondwana during the opening of the proto-Tethyan ... [more ▼]The Silurian – Devonian succession have been deposited in wide sags and sub-basins in a cratonic setting, along the northwestern passive margin of the Gondwana during the opening of the proto-Tethyan ocean. During this Siluro-Devonian Period, a high subsidence occurs stacked sediment bodies and organic-rich shales were deposited in many places that respectively form important hydrocarbon reservoirs and source rocks throughout North Africa basins and Arabia (Boot et al., 1998 ; Lüning et al., 2000), which lead Algeria to hold the fourth position in terms of the estimates of technically recoverable shale oil and shale gas resources, based on major basin assessment in the world (EIA, 2013). In the prolific Illizi and Berkine basins (western Ghadames, Algeria) a basin-wide approach is needed, especially with the new “shale gas and shale oil” frontier in the upcoming years, in order to capture regional trends and re-assessment on organic-rich (‘hot’) shale unites which in smaller-scale industrial studies are overlooked. Berkine Basin covers nearly 102.000 km2. This basin has been a thick sedimentary series of 7000 m corresponding to complex reservoirs but also black shales of the basal Silurian and Frasnian respectively major and secondary source rock systems. Wireline-logs from more than 146 (Berkine – Illizi Basins) Algerian petroleum exploration wells have been studies (Djouder et al., 2012; Djouder et al., 2014), and recently 03 months extensive field study of outcrops of the Siluro-Devonian sediments was carried out at the south margin (SE, Tassili n’Ajjer) of the basin. The following analysis incorporates biostratigraphic, ichnological, sedimentological and high resolution stratigraphic data, which provides a framework evolution from offshore to deltaic deposition for the Silurian then fluvial to normal-marine depositional conditions for the Devonian. A total of 06 short-term, third-order sequences can be identified for the Silurian deposits: (i) 'Hot Shale' Oued Imihrou Formation, organic-rich shales with carbonates nodules (Si-1); (ii) above is the Atafaïtafa Formation 500 to 650 m thick with HCS, gutter casts and Cruziana Ichnofacies (Si-2, Si-3); (iii) then overlaid by coarsening-shallowing-upward units. These sequences (Si-4, Si-5 & Si-6) with Storm-wave dominated and Skolithos Ichnofacies are interpreted to reflect deltaic origin. This delta is the result of a significant sea-level drop during the Upper Silurian (Beuf et al, 1971) but also from the high sedimentation rates prograding northwards (Eschard et al., 2005). Devonian deposit also can be divided into fourth third-order sequences (Dev-1 to 4), by the same previous analysis. The base of the cycle is the Caledonian unconformity linked to a tectonic event which affected most of the Gondwanan margin at the Silurian – Devonian boundary and a major relative sea-level fall (Eschard et al., 2005). Previous sequences defined from Tassili n’Ajjer outcrops are well recognized at the basin-scale (Berkine Basin) and can be correlated in the subsurface of the Illizi – Berkine basins (Djouder et al., 2012). Finally, the full depositional cycle for the Silurian – Devonian is reached and capped by the Frasnian maximum flooding surface, with black shales across North Africa (Algeria, western Libya and southern Tunisia) and which are also developed in many parts of the world (Lüning et al., 2003). [less ▲]Detailed reference viewed: 208 (16 ULg) Symboliser et conceptualiser, deux facettes indispensables de la pensée mathématique. L'exemple de l'algèbre.Vlassis, Joëlle; Fagnant, Annick ; Demonty, Isabelle in Actes du congrès EMF 2015. Pluralités culturelles et universalité des mathématiques : enjeux et perspectives pour leur enseignement et leur apprentissage. (2015, October)Detailed reference viewed: 39 (1 ULg) Anthropogenic particles in stomachs of anchovies (Engraulis encrasicolus) related to gill rakers morphologyCollard, France ; Das, Krishna ; Gilbert, Bernard et alin Proceedings of In the Wake of Plastics, Venice, October 13-15, 2015 (2015, October)Anthropogenic debris (AB) contaminate oceans and affect marine organisms in several ways. Plastic production is constantly increasing and it is estimated that 10% of this production end in the seas. As a ... [more ▼]Anthropogenic debris (AB) contaminate oceans and affect marine organisms in several ways. Plastic production is constantly increasing and it is estimated that 10% of this production end in the seas. As a consequence, plastic is considered as an emerging contaminant and ingestions by organisms are increasingly reported. Microdebris (< 5mm) are available for a high range of organisms, including planktivorous fish, such as the European anchovy (Engraulis encrasicolus). Planktivorous fish have a particular gill basket, with long and tight gill rakers, related to their diet. Upon these gill rakers, small structures called denticles are present. These gill rakers act as a net to trap organic particles and AB. The aim of our study was to correlate sizes of AB ingested with the mesh constituted by the gill rakers and associated structures. Fifteen stomach contents were analyzed by Raman spectroscopy and particles were measured. Five gill arches were observed with a scanning electron microscope. Cellulose fibers and microplastics were the most AB ingested. Comparing to other Clupeiformes (pilchard and Atlantic herring), anchovies have more denticles on each gill rakers (personal data). AB ingestion by fish is poorly studied and impacts of AB are not much understood. Clupeiformes play a major role in marine ecosystems and is the most consumed order by humans. As the branchial basket constitutes a food selective apparatus, more morphological studies dealing with AB ingestion on Clupeiformes are needed. [less ▲]Detailed reference viewed: 130 (8 ULg) Infections des voies génitales: Introduction et Infections Sexuellement TransmissiblesMelin, Pierrette in Melin, Pierrette (Ed.) Les infections de la sphères génitales (2015, October)Detailed reference viewed: 35 (1 ULg) New genetic cause of gigantism and FIPARostomyan, Liliya ; Daly, Adrian ; Trivellin, G et alin Abstract book - 25th meeting of the Belgian Endocrine Society (2015, October)Detailed reference viewed: 23 (4 ULg) Anthocyanin-rich blackcurrant juice induces a redox-sensitive caspase 3-related pro-apoptotic effect in leukemia Jurkat cells: role of delphinidin-3-O-glucoside and delphinidin-3-O-rutinosideLeon-Gonzalez; Sharif, T; Kayali, A et alin 7th International Conference on Polyphenols and Health (2015, October)Detailed reference viewed: 28 (0 ULg) La participation et ses distorsions: du malentendu aux bénéfices secondairesItaliano, Patrick in Bingen, Aline; Pilet, Jean-Benoît (Eds.) L'art de la participation (2015, October)Les dispositifs participatifs, dans la vie réelle, sont souvent soit verrouillés soit déconnectés de la décision finale sur laquelle ils sont censés porter. Cela peut avoir des effets délétères sur les ... [more ▼]Les dispositifs participatifs, dans la vie réelle, sont souvent soit verrouillés soit déconnectés de la décision finale sur laquelle ils sont censés porter. Cela peut avoir des effets délétères sur les publics que ces dispositifs voulaient impliquer. Il n'est pas rare que l'on donne le label "participation" à des processus dont la nature est mieux décrite par d'autres concepts. En définitive, c'est probablement dans des dispositifs centrés sur les personnes, et non sur des prises de décisions politiques, que l'exercice participatif est le plus susceptible d'avoir un effet positif univoque. [less ▲]Detailed reference viewed: 45 (6 ULg) SURFACE ENGINEERING FOR PARTS MADE BY ADDITIVE MANUFACTURINGNutal, Nicolas; Rochus, Pierre ; Collette, Jean-Paul et alin 66th International Astronautical Congress (2015, October)the surface preparation of metal parts made by additive manufacturing (AM). AM is a technology of choice for manufacturing of parts with complex shapes (heat exchangers, RF supports, optical parts…) and ... [more ▼]the surface preparation of metal parts made by additive manufacturing (AM). AM is a technology of choice for manufacturing of parts with complex shapes (heat exchangers, RF supports, optical parts…) and integrated functions such as conformal cooling channels, clips, hinges, etc. This opens the door for lightweight parts which are of prime importance for space applications. The potential of the AM technologies is however impeded by the quite rough surface finish that is observed on the as-manufactured parts. It is known that such a finish is likely to impact the performance of the parts. Several post-treatment techniques can be applied to improve the surface condition of the AM parts. However, so far, the influence of the successive post-processing steps on the final properties is not well established. Therefore, a better understanding of the impact of surface characteristics on the material behaviour is needed to expand the use of AM for high performance parts. The objective of this study, supported by ESA, is to propose and evaluate various surface finishing techniques for parts made by the AM technologies, in order to check their compatibility, evaluate their properties and derive guidelines for future applications. CRM is the prime proposer of this study and is in charge of the surface treatment and characterisations. Sirris additive manufacturing facilities are used to produce the parts. Thales Alenia Space and Walopt are included into the industrial team to provide concrete application cases. The study focuses on metals. Two metals under study are presented here: AlSi10Mg and Ti6Al4V. This paper is devoted to the early results of the first steps of surface preparation, namely material removal from the surface of the produced parts in order to improve their surface properties. As a first phase, tribo-finishing (TF) is tested on prototype parts to check its capabilities. Surface and volume parameters are analyzed, namely achieved roughness, material removal rate, location of removed material. The limitations in terms of geometry and applicability are discussed as well. These first observations should serve as guidelines for further application of AM for the design of parts used in space industry. [less ▲]Detailed reference viewed: 182 (20 ULg) Combining Features for Cover Song IdentificationOsmalsky, Julien ; Embrechts, Jean-Jacques ; Foster, Peter et alin 16th International Society for Music Information Retrieval Conference (2015, October)In this paper, we evaluate a set of methods for combining features for cover song identification. We first create multiple classifiers based on global tempo, duration, loudness, beats and chroma average ... [more ▼]In this paper, we evaluate a set of methods for combining features for cover song identification. We first create multiple classifiers based on global tempo, duration, loudness, beats and chroma average features, training a random forest for each feature. Subsequently, we evaluate standard combination rules for merging these single classifiers into a composite classifier based on global features. We further obtain two higher level classifiers based on chroma features: one based on comparing histograms of quantized chroma features, and a second one based on computing cross-correlations between sequences of chroma features, to account for temporal information. For combining the latter chroma-based classifiers with the composite classifier based on global features, we use standard rank aggregation methods adapted from the information retrieval literature. We evaluate performance with the Second Hand Song dataset, where we quantify performance using multiple statistics. We observe that each combination rule outperforms single methods in terms of the total number of identified queries. Experiments with rank aggregation me- thods show an increase of up to 23.5 % of the number of identified queries, compared to single classifiers. [less ▲]Detailed reference viewed: 164 (29 ULg) Further observations on the endPermian mass extinction based on the palaeobotanical recordCascales-Miñana, Borja ; Diez, José B.; Gerrienne, Philippe et alin Proceedings of the XXXI Annual Meeting of the Spanish Society of Palaeontology (abstract book) (2015, October)Detailed reference viewed: 28 (0 ULg) Le développement de la pensée algébrique : quelles différences entre les raisonnements mis en place par les élèves avant et après l'introduction de l'algèbre ?Demonty, Isabelle ; Fagnant, Annick ; Vlassis, Joëllein Actes du congrès EMF 2015. Pluralités culturelles et universalité des mathématiques : enjeux et perspectives pour leur enseignement et leur apprentissage. (2015, October)Detailed reference viewed: 79 (3 ULg) La vulnerabilidad como valor jurídico-ético para asegurar el «best interest» de los menores: comparación entre el tribunal europeo de derechos humanos y el tribunal de justicia de la Unión EuropeaColussi, Ilaria Anna in Alvarez Vélez, Isabel; Rey Pérez, José Louis (Eds.) Derecho y pobreza (2015, October)Within the concept of "vulnerability" - considered as an inherent or innate value of the human being, from which it is necessary to start in order to build a genuine social policy- the children's ... [more ▼]Within the concept of "vulnerability" - considered as an inherent or innate value of the human being, from which it is necessary to start in order to build a genuine social policy- the children's vulnerability occupies a special position. Traditionally, children have been treated as objects of protection and not as subjects of rights according to an authoritarian and paternalistic perspective. Over time, a different view of this matter has developed, and it has put the child at the center of attention, considering his vulnerabilities, needs and interests. This perspective has been reflected in the legislation, in case law and doctrine, both internationally and nationally. The concept of "best interest" is the key for addressing children's vulnerability of children and developing substantive equality for them. The European Court of Human Rights in Strasbourg and the Court of Justice of the European Union in Luxembourg have defined this concept in different areas: in the field of international child abduction, immigration, asylum and family reunification, custody and parental responsibility. Although these two tribunals have grounded their arguments on different legal perspectives, both have shown and still show a trend towards convergence to common points, through a balanced consideration of rights in this area. This communication aims at examining the relevant jurisprudence of the aforementioned tribunals about the notion of "best interest" of the child. The case-law since 2011 until 2015 has been taken into account. [less ▲]Detailed reference viewed: 65 (4 ULg) On the plant diversity changes during the Ordovician-Mississippian time intervalCascales-Miñana, Borja in Proceedings of the XXXI Annual Meeting of the Spanish Society of Palaeontology (abstract book) (2015, October)Detailed reference viewed: 13 (0 ULg) Le projet expérimental multidisciplinaire (PEMD) en 3ème Bachelier à GemblouxColaux, Catherine ; Pochet, Bernard in Former aux compétences informationnelles à l'heure du web 2.0 et des discovery tools (2015, September 28)Cette courte présentation, dans l'atelier 3 du colloque ILIB15, décrit l'intégration d'un cours (« littérature scientifique et méthodologie documentaire »), dont le titulaire est un bibliothécaire, dans ... [more ▼]Cette courte présentation, dans l'atelier 3 du colloque ILIB15, décrit l'intégration d'un cours (« littérature scientifique et méthodologie documentaire »), dont le titulaire est un bibliothécaire, dans une unité d’apprentissage intégrée basée sur la résolution d'un problème concret de recherche dans un contexte scientifique non familier. Ce cours a été proposé pour la première fois durant l'année académique 2014-2015 à une partie des étudiants du bloc trois du Master Bioingénieur, orientation Sciences et technologies de l’environnement de l'Université de Liège. Cette activité se déroule en plusieurs phases sur les deux quadrimestres. [less ▲]Detailed reference viewed: 105 (40 ULg) Milk production, milking frequency and rumination time of grazing dairy cows milked by a mobile milking robot.Lessire, Françoise ; Hornick, Jean-Luc ; Minet, Julien et alin Conington, J; Klopcic, M; Lauridsen, C (Eds.) et al Book of abstracts of the 66th Annual meeting of the European Federation of animal science (2015, September 28)In Europe, analysis of meteorological data shows that the average temperature has increased by ~1°C over the past hundred years (IPCC, 2013). Heat stress periods are thus expected to be more frequent even ... [more ▼]In Europe, analysis of meteorological data shows that the average temperature has increased by ~1°C over the past hundred years (IPCC, 2013). Heat stress periods are thus expected to be more frequent even in temperate areas. The use of an automatic milking system (AMS) implies the need to stimulate cows’ traffic to the robot, especially with grazing cows. Describing how heat stress influenced cows’ traffic to the robot is the aim of this study. Grazing dairy cows milked by an automatic system (AMS) experienced heat stress (HS) periods, twice during the summer 2013 in July (J) and August (A). The daily temperature humidity index (THI) during these periods were higher than 75. Each HS period was compared with a “normal period”(N), presenting the same number of cows, similar lactation number, days in milk, distance to come back to the robot and an equal access to water. The first HS period of 5 days with a mean THI of 78.4 was chosen in J, and a second that lasted for 6 days in A with a THI value of 77.3. Heat stress periods were cut off with the same duration of days with no stress (N) and mean THI <70. Milk production, milkings and refusals to the robot during HS were compared with N periods. Milkings and refusals were significantly more numerous in HS periods in July (HS: 2.54 ± 0.11 vs N: 2.19 ± 0.08, 1.87 ± 0.20 vs 0.72 ± 0.16) but milk production dropped from 21.8 ±0.6 kg per cow and per day during N periods to 18.9 ± 0.8 kg in HS. In August, MY increased slightly during HS. This could be explained by less high ambient temperatures and decreased distance to walk inducing less energy expenditure. The increase in milkings and refusals to the robot during HS could be linked to water availability nearby the robot and confirmed previous findings (Lessire et al., 2014). [less ▲]Detailed reference viewed: 85 (16 ULg) Psychological benefits of a multidisciplinary rehabilitation program after breast cancerLeclerc, Anne-France ; FOIDART-DESSALLE, Marguerite ; Bury, Thierry et alin European Cancer Congress : Abstract book (2015, September 27)Background : Breast cancer is the most frequent cancer in women, affecting 8 women out of 100. With early detection and improved treatments, the number of deaths linked to this disease has declined ... [more ▼]Background : Breast cancer is the most frequent cancer in women, affecting 8 women out of 100. With early detection and improved treatments, the number of deaths linked to this disease has declined. However, the disease and its treatments are at the origin of many undesirable side effects such as fatigue, anxiety, weight gain and sleep disorders. The objective of this study is to determine the psychological benefits of a multidisciplinary rehabilitation program among women treated for breast cancer (on average six months after the end of the adjuvant radiotherapy or chimiotherapy). Material and methods : 122 patients were included into a control group (n = 61) and a treated group (n = 61). All participants were submitted to evaluations before the beginning of the trial and after three months. These evaluations included different questionnaires exploring the quality of life, anxiety, depression and various functions and other symptoms related to cancer (EORTC QLQ-C30, EQ-5D, STAI, HADS) and functional assessments. The control group has received no intervention unlike the treated group that received a three-month rehabilitation including supervised physical training (90 min) with three times a week and various psycho-educational sessions (120 min) once a week. Results : After three months, the health status (quality of life) (p < 0,0001), the functional role (p = 0,031), emotional state (p < 0,0001) and physical (p = 0,0045), cognitive (p = 0,0027) and social functions (p = 0,0018) improve significantly in the treated group. This observation also applies to symptoms of fatigue (p < 0,0001), insomnia (p < 0,0001), pain (p = 0,002), dyspnea (p = 0,009), loss of appetite (p = 0,04), anxiety (p < 0,0001) and depression (p < 0,0001) as well as physical parameters obtained through functional assessments. In the control group, these improvements do not appear. Conclusions : This study shows the feasibility and psychological benefits of such a multidisciplinary oncological rehabilitation program in women after their treatments for breast cancer. Additional studies are needed to know the optimal time of beginning (during treatments or after them) and the optimal management time for this support. [less ▲]Detailed reference viewed: 161 (35 ULg) Tools for Measuring a City’s Resilience in a Fire Following Earthquake ScenarioElhami Khorasani, Negar; Gernay, Thomas ; Garlock, Mariain Proceedings of IABSE Conference - Structural Engineering: Providing Solutions to Global Challenges (2015, September 25)The paper provides a framework to evaluate the response of buildings in a community subject to fire following earthquake. First, a model is developed to determine the probability of ignition in buildings ... [more ▼]The paper provides a framework to evaluate the response of buildings in a community subject to fire following earthquake. First, a model is developed to determine the probability of ignition in buildings of a community due to an earthquake. Second, fragility functions are developed for buildings subject to fire, to quantify the structural damage and the expected losses. The ignition model, combined with the fragility functions, can be implemented in a GIS based risk management platform to evaluate economical losses in a region from fire following an earthquake. [less ▲]Detailed reference viewed: 135 (14 ULg) Design and modelisation of ASPIICS opticsGaly, Camille ; Fineschi, S.; Galano, D. et alin Proc. SPIE Volume 9604 Solar Physics and Space Weather Instrumentation VI (2015, September 21)In the framework of development of ASPIICS (Association of Spacecraft for Polarimetric and Imaging Investigation of the Corona of the Sun), the Centre Spatial de Liege is responsible of the optical design ... [more ▼]In the framework of development of ASPIICS (Association of Spacecraft for Polarimetric and Imaging Investigation of the Corona of the Sun), the Centre Spatial de Liege is responsible of the optical design of the coronagraph and the optics will be manufactured by TOPTEC. The particularity of this coronagraph is to have an external occulter located 150 m ahead of the first imaging lens. This external occulter is re-imaged on an internal occulter which function is - as in a classical externally occulted Lyot coronagraph - to block the sun light diffracted by the external occulter and to reduce the straylight on the detector. The selection of this configuration is driven by the requirement to observe the corona as close as possible to the solar limb (i.e. 1 RSun) without imaging the limb itself. A requirement of 1.08 RSun is specified at optical design level to grant 1.2 Rsun at instrument level. The coronograph instrument is designed to have a field of view of 1.6° x 1.6° with a resolution of less than 6 arcsec. Its performances are limited by diffraction in a 530 – 590 nm wavelength range. This paper presents the optical design and demonstrates that by design the requirements are fulfilled within the misalignment, manufacturing and thermo-elastic error contributions. [less ▲]Detailed reference viewed: 55 (31 ULg) Significance of the occulter diffraction for the PROBA3/ASPIICS formation flight metrologyLandini, F.; Bemporad, A.; Focardi, M. et alin Proc. SPIE Volume 9604 Solar Physics and Space Weather Instrumentation VI (2015, September 21)PROBA-3/ASPIICS is a formation Flying coronagraph selected by ESA and currently in its C/D phase. It is constituted by two spacecrafts (OSC, Occulter SpaceCraft, carrying the occulter, diameter 142 cm ... [more ▼]PROBA-3/ASPIICS is a formation Flying coronagraph selected by ESA and currently in its C/D phase. It is constituted by two spacecrafts (OSC, Occulter SpaceCraft, carrying the occulter, diameter 142 cm, and CSC, Coronagraph SpaceCraft, with the telescope) separated by ~144 m, kept in strict alignment by means of an active custom system. The alignment active system most critical components are the Shadow Positioning Sensors (SPS), a series of Si-PM (Silicon Photomultiplier) measuring the penumbra generated by the occulter. The arrangement of the SPSs around the telescope entrance aperture is defined as a trade-off between mechanical constraints and maximum sensitivity to misalignments. The signal detected by the SPSs can be approximately simulated with a geometrical analysis based on the variation of the penumbra generated by the external occulter. The stray light generated by the diffraction from the external occulter may affect the SPSs signal. It is mandatory to carefully evaluate its level in order to refine the active alignment adjustment algorithm. This work is dedicated to the description of the preliminary investigation performed in order to evaluate the impact of the diffraction on the SPSs signal. [less ▲]Detailed reference viewed: 16 (5 ULg) OPSE metrology system onboard of the PROBA3 mission of ESALoreggia, D.; Bemporad, A.; Capobianco, G. et alin Proc. SPIE Volume 9604 Solar Physics and Space Weather Instrumentation VI (2015, September 21)In recent years, ESA has assessed several mission involving formation flying (FF). The great interest in this topics is mainly driven by the need for moving from ground to space the location of next ... [more ▼]In recent years, ESA has assessed several mission involving formation flying (FF). The great interest in this topics is mainly driven by the need for moving from ground to space the location of next generation astronomical telescopes overcoming most of the critical problems, as example the construction of huge baselines for interferometry. In this scenario, metrology systems play a critical role. PROBA3 is an ESA technology mission devoted to in-orbit demonstration of the FF technique, with two satellites, an occulter and a main satellite housing a coronagraph named ASPIICS, kept at an average inter-distance by about 144m, with micron scale accuracy. The guiding proposal is to test several metrology solution for spacecraft alignment, with the important scientific return of having observation of Corona at never reached before angular field. The Shadow Position Sensors (SPS), and the Optical Position Emitters Sensors (OPSE) are two of the systems used for FF fine tracking. The SPS are finalized to monitor the position of the two spacecraft with respect to the Sun and are discussed in dedicated papers presented in this conference. The OPSE will monitor the relative position of the two satellites and consists of 3 emitters positioned on the rear surface of the occulter, that will be observed by the coronagraph itself. By following the evolution of the emitters images at the focal plane the alignment of the two spacecrafts is retrieved via dedicated centroiding algoritm. We present an overview of the OPSE system and of the centroiding approach. [less ▲]Detailed reference viewed: 40 (4 ULg) The Shadow Positioning Sensors (SPS) for formation flying metrology on-board the ESA-PROBA3 missionBemporad, A.; Baccani, C.; Capobianco, G. et alin Proc. SPIE Volume 9604 Solar Physics and Space Weather Instrumentation VI (2015, September 21)PROBA3 is an ESA technology mission devoted to in-orbit demonstration of the formation flight (FF) technique, with two satellites kept at an average inter-distance by about 144 m. The ASPIICS instrument ... [more ▼]PROBA3 is an ESA technology mission devoted to in-orbit demonstration of the formation flight (FF) technique, with two satellites kept at an average inter-distance by about 144 m. The ASPIICS instrument on-board PROBA3 will be the first ever space-based coronagraph working on one satellite and having the external occulter located on the second satellite, thus allowing observations of the inner solar corona with unprecedented reduction of stray light. During the observational periods, the FF configuration will be maintained with very high precision and two different techniques will be implemented: the use of Shadow Positioning Sensors (SPS) located on the Coronagraph Spacecraft (diodes measuring the penumbral light intensity on the entrance pupil plane) and the use of Occulter Position Sensor LEDs (OPSE) located on the back side of the Occulter Spacecraft. This paper will review the main instrumental requirements on the SPS needed to determine the 3-dimensional relative positioning of the two PROBA3 satellites with the high precision and frequency. [less ▲]Detailed reference viewed: 23 (6 ULg) Formation flying metrology for the ESA-PROBA3 mission: the Shadow Position Sensors (SPS) silicon photomultipliers (SiPMs) readout electronicsFocardi, M.; Bemporad, A.; Buckley, S. et alin Proc. SPIE Volume 9604 Solar Physics and Space Weather Instrumentation VI (2015, September 21)The European Space Agency (ESA) is planning to launch in 2018 the PROBA3 Mission, designed to demonstrate the inorbit formation flying (FF) attitude capability of its two satellites and to observe the ... [more ▼]The European Space Agency (ESA) is planning to launch in 2018 the PROBA3 Mission, designed to demonstrate the inorbit formation flying (FF) attitude capability of its two satellites and to observe the inner part of the visible solar corona as the main scientific objective. The solar corona will be observed thanks to the presence on the first satellite, facing the Sun, of an external occulter producing an artificial eclipse of the Sun disk. The second satellite will carry on the coronagraph telescope and the digital camera system in order to perform imaging of the inner part of the corona in visible polarized light, from 1.08 Rsun up to about 3 Rsun. One of the main metrological subsystems used to control and to maintain the relative (i.e. between the two satellites) and absolute (i.e. with respect to the Sun) FF attitude is the Shadow Position Sensor (SPS) assembly. It is composed of eight micro arrays of silicon photomultipliers (SiPMs) able to measure with the required sensitivity and dynamic range the penumbral light intensity on the Coronagraph entrance pupil. In the following of the present paper we describe the overall SPS subsystem and its readout electronics with respect to the capability to satisfy the mission requirements, from the light conversion process on board the silicon-based SPS devices up to the digital signal readout and sampling. [less ▲]Detailed reference viewed: 22 (5 ULg) Design status of ASPIICS, an externally occulted coronagraph for PROBA-3Renotte, Etienne ; Alia, A.; Bemporad, A. et alin Proc. SPIE Volume 9604 Solar Physics and Space Weather Instrumentation VI (2015, September 21)The “sonic region” of the Sun corona remains extremely difficult to observe with spatial resolution and sensitivity sufficient to understand the fine scale phenomena that govern the quiescent solar corona ... [more ▼]The “sonic region” of the Sun corona remains extremely difficult to observe with spatial resolution and sensitivity sufficient to understand the fine scale phenomena that govern the quiescent solar corona, as well as phenomena that lead to coronal mass ejections (CMEs), which influence space weather. Improvement on this front requires eclipse-like conditions over long observation times. The space-borne coronagraphs flown so far provided a continuous coverage of the external parts of the corona but their over-occulting system did not permit to analyse the part of the white-light corona where the main coronal mass is concentrated. The proposed PROBA-3 Coronagraph System, also known as ASPIICS (Association of Spacecraft for Polarimetric and Imaging Investigation of the Corona of the Sun), with its novel design, will be the first space coronagraph to cover the range of radial distances between ~1.15 and 3 solar radii where the magnetic field plays a crucial role in the coronal dynamics, thus providing continuous observational conditions very close to those during a total solar eclipse. PROBA-3 is first a mission devoted to the in-orbit demonstration of precise formation flying techniques and technologies for future European missions, which will fly ASPIICS as primary payload. The instrument is distributed over two satellites flying in formation (approx. 150m apart) to form a giant coronagraph capable of producing a nearly perfect eclipse allowing observing the sun corona closer to the rim than ever before. The coronagraph instrument is developed by a large European consortium including about 20 partners from 7 countries under the auspices of the European Space Agency. This paper is reviewing the recent improvements and design updates of the ASPIICS instrument as it is stepping into the detailed design phase. [less ▲]Detailed reference viewed: 98 (33 ULg) Exoplanet science with the LBTI: instrument status and plansDefrere, Denis ; Hinz, P.; Skemer, A. et alin Shaklan, Stuart (Ed.) Techniques and Instrumentation for Detection of Exoplanets VII (2015, September 16)The Large Binocular Telescope Interferometer (LBTI) is a strategic instrument of the LBT designed for high-sensitivity, high-contrast, and high-resolution infrared (1.5-13 $\mu$m) imaging of nearby ... [more ▼]The Large Binocular Telescope Interferometer (LBTI) is a strategic instrument of the LBT designed for high-sensitivity, high-contrast, and high-resolution infrared (1.5-13 $\mu$m) imaging of nearby planetary systems. To carry out a wide range of high-spatial resolution observations, it can combine the two AO-corrected 8.4-m apertures of the LBT in various ways including direct (non-interferometric) imaging, coronagraphy (APP and AGPM), Fizeau imaging, non-redundant aperture masking, and nulling interferometry. It also has broadband, narrowband, and spectrally dispersed capabilities. In this paper, we review the performance of these modes in terms of exoplanet science capabilities and describe recent instrumental milestones such as first-light Fizeau images (with the angular resolution of an equivalent 22.8-m telescope) and deep interferometric nulling observations. [less ▲]Detailed reference viewed: 37 (10 ULg) Learning to look - Purpose and design of an awareness-raising online course in veterinary sciencesTasnier, Sophie ; Busoni, Valeria ; Hanzen, Christian et alin Prilla, M; Ullmann, T; Kravcik, M (Eds.) et al Proceedings of the 5th Workshop on Awareness and Reflection in Technology-Enhanced Learning (2015, September 15)This paper reports on a work in progress: an online self-instruction course created to stimulate students’ awareness processes when dealing with pictures. Using non-clinical material, the “Learning to ... [more ▼]This paper reports on a work in progress: an online self-instruction course created to stimulate students’ awareness processes when dealing with pictures. Using non-clinical material, the “Learning to Look” course was de-signed as a preliminary training to the observation of histological sections, radi-ological graphs, and other specialized visual material. Following a presentation of the project, salient results of a feedback questionnaire completed by 382 stu-dents about their experience of the course are provided. [less ▲]Detailed reference viewed: 76 (14 ULg) Annotations as reflection amplifiers in online learning - An exploratory studyVerpoorten, Dominique ; Specht, Marcus; Westera, Wimin Ullmann, T; Kravcik, M; Mikroyannidis, A (Eds.) et al Proceedings of the 5th Workshop on Awareness and Reflection in Technology-Enhanced Learning (ARTEL). In conjunction with the 10th european conference on technology enhanced learning: Design for teaching and learning in a networked world. (2015, September 15)In a controlled experiment on the effects of frequent and local digital annotations, 137 volunteers covered an online course at 3 conditions: no/free/question-based electronic annotations. Results show no ... [more ▼]In a controlled experiment on the effects of frequent and local digital annotations, 137 volunteers covered an online course at 3 conditions: no/free/question-based electronic annotations. Results show no difference in performance between groups. However, analyses conducted within treatments suggest positive impacts on performance when annotation rates are taken into consideration, and coupled with other reflective enactments. [less ▲]Detailed reference viewed: 84 (4 ULg) Optimized focal and pupil plane masks for vortex coronagraphs on telescopes with obstructed aperturesRuane, Garreth; Absil, Olivier ; Huby, Elsa et alin Shaklan, Stuart (Ed.) Techniques and Instrumentation for Detection of Exoplanets VII (2015, September 11)We present methods for optimizing pupil and focal plane optical elements that improve the performance of vortex coronagraphs on telescopes with obstructed or segmented apertures. Phase-only and complex ... [more ▼]We present methods for optimizing pupil and focal plane optical elements that improve the performance of vortex coronagraphs on telescopes with obstructed or segmented apertures. Phase-only and complex masks are designed for the entrance pupil, focal plane, and the plane of the Lyot stop. Optimal masks are obtained using both analytical and numerical methods. The latter makes use of an iterative error reduction algorithm to calculate "correcting" optics that mitigate unwanted diffraction from aperture obstructions. We analyze the achieved performance in terms of starlight suppression, contrast, off-axis image quality, and chromatic dependence. Manufacturing considerations and sensitivity to aberrations are also discussed. This work provides a path to joint optimization of multiple coronagraph planes to maximize sensitivity to exoplanets and other faint companions. [less ▲]Detailed reference viewed: 45 (13 ULg) A Mach-Zehnder interferometer based on orbital angular momentum for improved vortex coronagraph efficiencyPiron, Pierre ; Delacroix, Christian; Huby, Elsa et alin Shaklan, Stuart (Ed.) Techniques and Instrumentation for Detection of Exoplanets VII (2015, September 11)The Annular Groove Phase Mask (AGPM) is a vectorial vortex phase mask. It acts as a half-wave plate with a radial fast axis orientation operating in the mid infrared domain. When placed at the focus of a ... [more ▼]The Annular Groove Phase Mask (AGPM) is a vectorial vortex phase mask. It acts as a half-wave plate with a radial fast axis orientation operating in the mid infrared domain. When placed at the focus of a telescope element provides a continuous helical phase ramp for an on axis sources, which creates the orbital angular momentum. Thanks to that phase, the intensity of the central source is canceled by a down-stream pupil stop, while the off axis sources are not affected. However due to experimental conditions the nulling is hardly perfect. To improve the null, a Mach-Zehnder interferometer containing Dove prisms differently oriented can be proposed to sort out light based on its orbital angular momentum (OAM). Thanks to the differential rotation of the beam, a π phase shift is achieved for the on axis light affected by a non zero OAM. Therefore the contrast between the star and its faint companion is enhanced. Nevertheless, due the Dove prisms birefringence, the performance of the interferometer is relatively poor. To solve this problem, we propose to add a birefringent wave-plate in each arm to compensate this birefringence. In this paper, we will develop the mathematical model of the wave front using the Jones formalism. The performance of the interferometer is at first computed for the simple version without the birefringent plate. Then the effect of the birefringent plate is be mathematically described and the performance is re-computed. [less ▲]Detailed reference viewed: 42 (10 ULg) 6. Protection intégrée des semis et des jeunes emblavuresHenriet, François; Chavalle, Sandrine ; Bataille, Charlotte et alin Bodson, Bernard; Watillon, Bernard (Eds.) Livre Blanc Céréales (2015, September 10)Detailed reference viewed: 25 (2 ULg) 1. Actualités en ravageurs - 1. Saison 2015 : attaque et dégâts de cécidomyie orange du bléHautier, Louis; Chavalle, Sandrine ; De Proft, Michelin Bodson, Bernard; Watillon, Bernard (Eds.) Livre Blanc Céréales (2015, September 10)Detailed reference viewed: 105 (5 ULg) Nutritional treatment of food allergy in dogs and cats : an update.Diez, Marianne in Proceedings of the 25th ECVIM Congress (2015, September 10)Detailed reference viewed: 76 (2 ULg) 5. Froment 2015: Enfin une récolte sereineSinnaeve, Georges; Gofflot, S.; Chandelier, Anne et alin Bodson, Bernard; Watillon, Bernard (Eds.) Livre Blanc Céréales (2015, September 10)Detailed reference viewed: 8 (0 ULg)