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See detailThe Solar Energetic Particle experiment on MAVEN: first results
Larson, Davin; Lillis; Dunn et al

Conference (2015, March)

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See detailMulti-period stochastic optimization problems in transportation management (Ph. D. Thesis Summary)
Pironet, Thierry ULg

in 4OR : Quarterly Journal of the Belgian, French and Italian Operations Research Societies (2015), 13(1), 113-114

Ph. D Thesis summary see other reference on ORBI

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See detailRitournelles et territoires professionnels. Le cas des conseillers emploi
Orianne, Jean-François ULg

in Langage et Société (2015), 151

L’objectif de ce texte est d’utiliser le concept de ritournelle pour analyser la formation d’un groupe professionnel dans le champ des politiques d’emploi en Belgique : les conseillers emploi du FOREM ... [more ▼]

L’objectif de ce texte est d’utiliser le concept de ritournelle pour analyser la formation d’un groupe professionnel dans le champ des politiques d’emploi en Belgique : les conseillers emploi du FOREM. L’auteur commence par définir et opérationnaliser le concept, emprunté à Deleuze et Guattari, en suivant les apports des théories de la communication réflexive. Il esquisse brièvement le contexte politique et institutionnel au sein duquel le groupe professionnel apparaît. Ensuite, il analyse trois ritournelles professionnelles, trois procédés de territorialisation des identités professionnelles des conseillers emploi. Il précise, en conclusion, la complémentarité du concept de ritournelle avec celui de rhétorique professionnelle. [less ▲]

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See detailA comparison of grey-box and black-box approaches in nonlinear state-space modelling and identification
Noël, Jean-Philippe ULg; Schoukens, Johan; Kerschen, Gaëtan ULg

Conference (2015, March)

In the present contribution, it is shown that, in the case of mechanical systems where nonlinearities are physically localised, the general structure of black-box nonlinear state-space models can be ... [more ▼]

In the present contribution, it is shown that, in the case of mechanical systems where nonlinearities are physically localised, the general structure of black-box nonlinear state-space models can be drastically simplified. A more parsimonious, grey-box state-space representation is derived, which is found to be compatible with Newton's second law of dynamics. For demonstration purposes, black-box and grey-box state-space models of the Silverbox benchmark, i.e. an electrical mimicry of a single-degree-of-freedom mechanical system with cubic nonlinearity, are identified using a maximum likelihood estimator. It is found that the grey-box approach allows to reduce markedly modelling errors with respect to a black-box model with a comparable number of parameters. It is also suggested that the greater accuracy of the grey-box model lends itself to the computation of reliable confidence bounds on the model parameters. [less ▲]

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See detailAlignments of quasar axes with large-scale structures
Hutsemekers, Damien ULg; Braibant, Lorraine ULg; Pelgrims, Vincent ULg et al

Poster (2015, March)

Based on measurements of optical linear polarization of quasars belonging to large groups at redshift z ~ 1.3, we found that quasar spin axes are likely parallel to their host large-scale structures ... [more ▼]

Based on measurements of optical linear polarization of quasars belonging to large groups at redshift z ~ 1.3, we found that quasar spin axes are likely parallel to their host large-scale structures (Hutsemékers et al. 2014). These observations can constrain models of the coevolution of AGN, galaxies and large-scale structures. [less ▲]

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See detailMeasuring nonlinear distortions: from test case to an F-16 fighter
Vaes, Mark; Schoukens, Johan; Rolain, Yves et al

Conference (2015, March)

What are the similarities and differences between the behavior of a small vibrating test system and an F-16 fighter? To find it out, we compare measurements of the test system to measurements from the ... [more ▼]

What are the similarities and differences between the behavior of a small vibrating test system and an F-16 fighter? To find it out, we compare measurements of the test system to measurements from the bolted connection of the wing and the missile of a F-16 Fighter Falcon from the Belgian air force. These measurements were done during a ground vibration test (GVT) campaign. Essentially, the behavior of these systems match, even though the test system is only the heart of a self-study kit for nonlinear system identification and the F-16 is a complex real life mechanical structure. This clearly shows the added value of an experiment driven nonlinear educational system identification package. It provides safe small-scale toy examples for hands-on exercises that react like real systems. We believe that this practical approach lowers the gap between learning system identification concepts and applying it on real systems. [less ▲]

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See detailÉvaluation et analyse de la performance par accélérométrie lors des mouvements de musculation
Jidovtseff, Boris ULg; Laffaye, Guillaume

in Arfaoui, Ahlem; Bertucci, William (Eds.) Métrologie et biomécanique (2015)

Since a decade, the accelerometry allows new measurements in biomechanics of sport. Small, light and transportable, these sensors allow to liberate from heavy force plates and offers new perspectives in ... [more ▼]

Since a decade, the accelerometry allows new measurements in biomechanics of sport. Small, light and transportable, these sensors allow to liberate from heavy force plates and offers new perspectives in the understanding of the performance in sport. The goal of this chapter is to present the concept of the accelerometry and to understand practical possibilities and limits in the assessment of muscular performance. The reliability of the accelerometers are highly depending on the level of technology and in the respect of manufacturer recommendations. These devices are used during exercises such as bench press or squat, allowing to analyze force-velocity-power profile, to estimate the 1-RM, to achieve biomechanical analysis or to track free weight exercises during work out. All of these applications are very precious for scientists and for coaches during training program or athletes follow-up. [less ▲]

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See detailScreening of microorganisms producing polygalacturonase (PG) in microbiota of fermented cassava
Kouhounde, Sonagnon Hermann Serge ULg

in International Journal of Biochemistry and Biotechnology (2015)

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See detailEquipements remarquable: Passeport santé pour bananier
Massart, Sébastien ULg

in 15e Jour du Mois (Le) (2015), (242),

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See detailAnalyse des sauts et de la course à pied par accélérométrie
Laffaye, Guillaume; Jidovtseff, Boris ULg

in Arfaoui, Ahlem; Bertucci, William (Eds.) Métrologie en biomécanique (2015)

The goal of this article is to understand the interests and limits of the accelerometry for assessing the performance in sport. More specifically, accelerometers are used during jumping tests (squat jump ... [more ▼]

The goal of this article is to understand the interests and limits of the accelerometry for assessing the performance in sport. More specifically, accelerometers are used during jumping tests (squat jump, countermovement jump, hopping on place test) to measure jump height, power, force and leg stiffness as well. During running, they are used for assessing velocity, step frequency, and other useful parameters for trainers or scientists in the understanding of this mode of locomotion. [less ▲]

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See detailRecherche concernant les formations initiales des professionnel(le)s de l’enfance (0-12 ans) et des équipes d’encadrement. À la découverte d’autres systèmes éducatifs européens : Flandre
Francois, Nathalie ULg; Pools, Elodie ULg; Pirard, Florence ULg

Report (2015)

Ce rapport a été produit dans le cadre d'une recherche-action, menée en Fédération Wallonie Bruxelles (Belgique) de novembre 2013 à juin 2015, et qui propose un cadre de réflexion pour repenser les ... [more ▼]

Ce rapport a été produit dans le cadre d'une recherche-action, menée en Fédération Wallonie Bruxelles (Belgique) de novembre 2013 à juin 2015, et qui propose un cadre de réflexion pour repenser les formations initiales dans le champ de l'accueil de l'enfance (0-12 ans) inscrites dans un système compétent (Urban et al., 2011) en tenant compte des recommandations internationales, des savoirs scientifiques, des valeurs, de l’analyse d’expériences européennes de référence dans le domaine. Ce deuxième rapport est centré sur le cas de la Flandre où une série de réformes ont été engagées, dont certaines sont encore en cours actuellement. Citons la parution en septembre 2014 du premier curriculum socio-psycho-pédagogique pour l’accueil de la petite enfance et en matière de formation, depuis l’année académique 2011-2012, l’implémentation d’une formation coaching (bachelier en pédagogie du jeune enfant 0-12 ans - Bachelor pedagogie van het jonge kind) alliant approche éducative et sociale dans l’accueil 0-12 ans. Ce rapport fait suite à celui consacré à la France. Deux autres rapports porteront ensuite sur le cas de l'Angleterre et de la Suède. La partie des rapports consacrées à une analyse des consultations des participants à partir des systèmes européens reste à usage interne et n'est pas diffusée. [less ▲]

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See detailThe inevitable downfall of the Belgian electrical power industry?
Ernst, Damien ULg

Speech/Talk (2015)

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See detailLaTeX, un peu, beaucoup (7. Tableaux (encore))
Dupont, Pascal ULg

in Losanges (2015), 28

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See detailREPORT OF THE EGOLF ROUND-ROBIN NR. TC2 14-1 IN FIRE RESISTANCE TESTING
Dumont, Fabien ULg; Boström, Lars; Łukomski, Marek et al

Report (2015)

This document reports the statistical analysis conducted on the raw data issued from the TC2 14-1 round-robin performed by 16 fire testing laboratories members of EGOLF. The test specimen is a HEB300 hot ... [more ▼]

This document reports the statistical analysis conducted on the raw data issued from the TC2 14-1 round-robin performed by 16 fire testing laboratories members of EGOLF. The test specimen is a HEB300 hot rolled steel beam tested according to EN 1365-3. [less ▲]

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See detailELICITOR SCREENING TO PROTECT WINTER WHEAT AGAINST ZYMOSEPTORIA TRITICI BLOTCH
Le Mire, Géraldine ULg; Siah, Ali; Jijakli, Haissam ULg

Poster (2015, March)

Plant protection strategies are strongly focused today on the development of alternative methods in order to complete or replace conventional chemical inputs. Elicitors of biological origin are ... [more ▼]

Plant protection strategies are strongly focused today on the development of alternative methods in order to complete or replace conventional chemical inputs. Elicitors of biological origin are increasingly considered as a promising tool as biocontrol agents. They offer the possibility, through the induction of plant natural defences, to preventively protect plants against a large spectra of diseases. Multiple elicitors have already been identified since their first discovery in the late 70s, but few research has been focused on crop pathogens although such diseases can strongly impact both yield and grain quality. We describe hereby a method of elicitor screening to protect wheat against Zymoseptoria tritici. Focus is made on the importance of a good disease infection protocol in order to achieve screening tests. [less ▲]

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See detailUnique recurrence patterns of cervical intraepithelial neoplasia following excision of the squamo-columnar junction.
Herfs, Michael ULg; SOMJA, Joan ULg; Howitt, Brooke E. et al

in International journal of cancer. Journal international du cancer (2015), 136

Recent studies have identified a putative cell of origin for cervical intraepithelial neoplasia (CIN) and cervical cancer at the squamo-columnar junction (SCJ) and suggest that these cells may not ... [more ▼]

Recent studies have identified a putative cell of origin for cervical intraepithelial neoplasia (CIN) and cervical cancer at the squamo-columnar junction (SCJ) and suggest that these cells may not regenerate following excision (LEEP). This study addressed the impact of SCJ excision on the temporal dynamics, histologic and viral (HPV) characteristics of recurrent CIN. One hundred thirty one consecutive patients treated by excision and attending follow-up visits were enrolled. We compared recurrent and initial CIN with attention to excision margins, timing of recurrence, CIN grade, HPV types, p16 immunophenotype, and SCJ immunophenotype. During the follow-up period (up to four years), sixteen (12.2%) recurrences were identified. Four (25%) were identified at the first follow-up visit, closely resembled the initial CIN 2/3 in grade and HPV type, and were typically SCJ marker positive [SCJ(+)], suggesting non-excised (residual) disease. Twelve (75%) manifested after the first postoperative visit and all were in the ectocervix or in mature metaplastic epithelium. All of the 12 delayed recurrences were classified as CIN 1 and were SCJ (-). Nine of 11 SCJ (-) recurrences (82%) followed regressed spontaneously. Taken together, these results show that new lesions developing from any HPV infection are delayed and occur within the ectocervix or metaplastic epithelium. This dramatically lower risk of CIN 2/3 following successful SCJ excision suggests that removal of the SCJ could be a critical variable in reducing the risk of subsequent CIN 2/3 and cervical cancer. (c) 2014 Wiley Periodicals, Inc. [less ▲]

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See detailQuel sort pour les déchets moyennement et hautement radioactifs belges ? Controverses et traitements médiatiques entourant le choix de l’option
Parotte, Céline ULg; Lits, Grégoire

in Wintgens, Sophie; Grandjean, Geoffrey; Vanhaeren, Stéphanie (Eds.) L'insécurité en question. Définitions, enjeux et perspectives (2015)

Nous faisons le choix d’analyser le traitement médiatique du Plan Déchets, en le situant dans un processus plus large, c’est- à-dire incluant une pluralité d’acteurs intéressés, de construction du ... [more ▼]

Nous faisons le choix d’analyser le traitement médiatique du Plan Déchets, en le situant dans un processus plus large, c’est- à-dire incluant une pluralité d’acteurs intéressés, de construction du problème des déchets radioactifs en Belgique. Cette analyse repose sur une « conception relationnelle »3 de la définition des problèmes publics – ou sociaux. Il s’agit de comprendre les problèmes publics, et plus généralement la construction de po- litiques publiques destinées à les résoudre, à partir des relations liant différents types d’acteurs, ou, comme l’assemblage « des pratiques qui les produisent et les transforment sans cesse ». Nous nous intéresserons ici précisément aux actions et interactions liant plusieurs groupes d’acteurs participant à ce processus dynamique de construction du problème public : l’organisme d’intérêt public – l’ONDRAF –, les médias, le public, certaines associations environnementales ainsi que les représentants politiques à tous niveaux de pouvoir. [less ▲]

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See detailControl of plankton phenology by climate variation in a Mediterranean coastal area : results from a long-term study (1979-2011)
Goffart, Anne ULg; Collignon, Amandine ULg; Hecq, Jean-Henri ULg

Conference (2015, March)

Physical processes are known to play major roles in marine plankton succession. However, few studies have addressed the mechanisms that regulate phyto- and zooplankton phenology in a context of changing ... [more ▼]

Physical processes are known to play major roles in marine plankton succession. However, few studies have addressed the mechanisms that regulate phyto- and zooplankton phenology in a context of changing climate. Here we used a unique long-term (1979-2011) time series performed in a Mediterranean coastal area unbiased by local anthropogenic pressure (PHYTOCLY station, Bay of Calvi, Corsica) to understand how environmental forcing affects the timing, duration and magnitude of the winter-spring phyto- and zooplankton blooms. We showed that phyto- and zooplankton blooms were bottom-up controlled by the establishment of favourable abiotic conditions, i.e. nutrient replenishment by vertical mixing under specific water temperature and wind conditions, for which thresholds were defined. According to the intensity of winter characteristics, there were strong differences in both the abundance and composition of phyto- and zooplankton during the winter-spring period. Our study is consistent with the recent reports that, when occurring, diatoms peaks were added to the initial phytoplankton groups instead of replacing them. In contrast, zooplankton groups followed a replacement sequence. Based on the results provided by our time series, we show that plankton phenology in the Bay of Calvi is highly controlled by climate variation and exhibits contrasted patterns in response to different scenarios of environmental forcing. [less ▲]

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See detailL'accoutumance à l'eau: un préalable au savoir-nager.
Mornard, Manhattan ULg; Delvaux, Anne ULg; Cloes, Marc ULg et al

in Éducation Physique et Sport (2015), (364), 16-20

Synthèse de la méthodologie et des travaux scientifiques réalisés au cours de ces dernières années par le cereki dans le domaine de l'accoutumance à l'eau.

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