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See detailGuided group purchases of energy renovation services and works in deprived urban neighbourhoods
Ruelle, Christine ULg; Teller, Jacques ULg

in Energy Efficiency (2015)

The energy retrofitting of housings is progressing very slowly in Wallonia (Belgium) despite individual fiscal measures and subsidies offered by public authorities to support households engaging in this ... [more ▼]

The energy retrofitting of housings is progressing very slowly in Wallonia (Belgium) despite individual fiscal measures and subsidies offered by public authorities to support households engaging in this process. This paper explores the use of a method called ‘Guided Group Purchases’ (GPPs), i.e. an approach combining support, guidance and group purchasing of energy renovation services and works, as a possible method to accelerate the retrofitting of the existing housing stock. It reports on an action research experiment conducted in the context of the Interreg project ‘SUN’ (Sustainable Urban Neighbourhoods). The results of this experiment are quite promising. Within a few months, some 80 energy retrofitting interventions (energy audits or insulation works) were implemented in one neighbourhood of the city of Liège. Our evaluation of the experiment showed that the prospect of achieving cost reductions was one of the main initial expectations of participants to the GGPs. Still the participants rather insisted on other benefits after taking part to the initiative. These benefits were mostly related to the guidance they received, to the facilitation with contractors and to the social dynamics generated by the initiative. Several weaknesses were also identified by participants, like the lack of follow-up during and after the works. Our evaluation also highlighted that the main landlords did not participate in the initiative and that the influence of GGPs on costs was limited to specific types of interventions. Despite observed limitations and possible improvements, such a neighbourhood-based approach certainly constitutes a promising avenue for public authorities to support and accelerate the energy retrofitting of private residential buildings in urban neighbourhoods. [less ▲]

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See detailDirect exoplanet detection and characterization using the ANDROMEDA method: Performance on VLT/NaCo data
Cantalloube, F.; Mouillet, D.; Mugnier, L. M. et al

in Astronomy and Astrophysics (2015), 582

Context. The direct detection of exoplanets with high-contrast imaging requires advanced data processing methods to disentangle potential planetary signals from bright quasi-static speckles. Among them ... [more ▼]

Context. The direct detection of exoplanets with high-contrast imaging requires advanced data processing methods to disentangle potential planetary signals from bright quasi-static speckles. Among them, angular differential imaging (ADI) permits potential planetary signals with a known rotation rate to be separated from instrumental speckles that are either statics or slowly variable. The method presented in this paper, called ANDROMEDA for ANgular Differential OptiMal Exoplanet Detection Algorithm is based on a maximum likelihood approach to ADI and is used to estimate the position and the flux of any point source present in the field of view. Aims. In order to optimize and experimentally validate this previously proposed method, we applied ANDROMEDA to real VLT/NaCo data. In addition to its pure detection capability, we investigated the possibility of defining simple and efficient criteria for automatic point source extraction able to support the processing of large surveys. Methods. To assess the performance of the method, we applied ANDROMEDA on VLT/NaCo data of TYC-8979-1683-1 which is surrounded by numerous bright stars and on which we added synthetic planets of known position and flux in the field. In order to accommodate the real data properties, it was necessary to develop additional pre-processing and post-processing steps to the initially proposed algorithm. We then investigated its skill in the challenging case of a well-known target, $\beta$ Pictoris, whose companion is close to the detection limit and we compared our results to those obtained by another method based on principal component analysis (PCA). Results. Application on VLT/NaCo data demonstrates the ability of ANDROMEDA to automatically detect and characterize point sources present in the image field. We end up with a robust method bringing consistent results with a sensitivity similar to the recently published algorithms, with only two parameters to be fine tuned. Moreover, the companion flux estimates are not biased by the algorithm parameters and do not require a posteriori corrections. Conclusions. ANDROMEDA is an attractive alternative to current standard image processing methods that can be readily applied to on-sky data. [less ▲]

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See detailPourquoi et comment enseigner l'histoire à l'école secondaire ?
Jadoulle, Jean-Louis ULg

Conference given outside the academic context (2015)

Cette conférence avait pour objet de présenter l'ouvrage de synthèse de J.-L. Jadoulle, Faire apprendre l’histoire. Pratiques et fondements d’une « didactique de l’enquête » en classe du secondaire, Namur ... [more ▼]

Cette conférence avait pour objet de présenter l'ouvrage de synthèse de J.-L. Jadoulle, Faire apprendre l’histoire. Pratiques et fondements d’une « didactique de l’enquête » en classe du secondaire, Namur, Erasme, 2015. [less ▲]

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See detailCircuits Courts Locaux comme réponse au défi climatique
Ozer, Pierre ULg

Conference given outside the academic context (2015)

Manger de façon plus respectueuse de l'environnement n'est pas seulement nécessaire, c'est aussi délicieux ! Lors de cette soirée, nous aborderons la question du lien entre alimentation et environnement ... [more ▼]

Manger de façon plus respectueuse de l'environnement n'est pas seulement nécessaire, c'est aussi délicieux ! Lors de cette soirée, nous aborderons la question du lien entre alimentation et environnement avec Pierre Ozer, docteur en géographie, spécialiste du climat et bon vivant. Nous échangerons également avec Micheline Halleux, qui tient le Temps des Cerises, magasin bio bien connu du Laveu, Mario Gotto, qui a lancé le Como en Casa, restaurant tout autant gastronomique que biologique, où se déroulera cette assemblée et Benoit Noël, de la Ceinture Aliment-Terre. Des dégustations illustreront les propos tout au long de la soirée. [less ▲]

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See detailL’approche par compétences, un atout pour la professionnalisation des étudiants ?
Georges, François ULg

Scientific conference (2015, October 14)

Notre intervention propose un tour d’horizon de l’approche compétence et de son potentiel en terme de professionnalisation. Après avoir défini le concept de compétence et mis en garde contre certains ... [more ▼]

Notre intervention propose un tour d’horizon de l’approche compétence et de son potentiel en terme de professionnalisation. Après avoir défini le concept de compétence et mis en garde contre certains écueils, nous présentons quelques méthodes susceptibles de servir le développement et l’évaluation des compétences. Une attention particulière est prêtée à la notion de progression et à au nécessaire changement de paradigme qu’impose l’approche compétence en matière d’évaluation. [less ▲]

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See detailBarthes et Robbe-Grillet : "Je n'aurais pas voulu qu'il fasse du cinéma"
Lorent, Fanny ULg

Conference (2015, October 14)

Detailed reference viewed: 24 (2 ULg)
See detailMémoire et fonctions exécutives: Nouvelles pistes de recherche
Collette, Fabienne ULg

Conference (2015, October 14)

Detailed reference viewed: 15 (0 ULg)
See detailPisot property for Arnoux-Rauzy-Poincaré algorithm
Labbé, Sébastien ULg

Conference (2015, October 14)

Detailed reference viewed: 14 (7 ULg)
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See detailAgeism among nurses in oncology
Schroyen, Sarah ULg; Missotten, Pierre ULg; JERUSALEM, Guy ULg et al

Poster (2015, October 14)

Detailed reference viewed: 19 (2 ULg)
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See detailWildlife conservation at Madagascar - A global overview
Wilmet, Leslie ULg; Vermeulen, Cédric ULg; Beudels Jamar, Roseline C.

Scientific conference (2015, October 13)

Detailed reference viewed: 25 (1 ULg)
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See detailA lysine cluster in domain II of Bacillus subtilis PBP4a plays a role in the membrane attachment of this C1-PBP
Vanden Broeck, Arnaud; Van Der Heiden, Edwige ULg; Sauvage, Eric ULg et al

in PLoS ONE (2015)

In PBP4a, a Bacillus subtilis class-C1 penicillin-binding protein (PBP), four clustered lysine (K) residues, K86, K114, K119, and K265, protrude from domain II. Replacement of these amino acids with ... [more ▼]

In PBP4a, a Bacillus subtilis class-C1 penicillin-binding protein (PBP), four clustered lysine (K) residues, K86, K114, K119, and K265, protrude from domain II. Replacement of these amino acids with glutamine (Q) residues by site-directed mutagenesis yielded Mut4KQ PBP4a. When produced in Escherichia coli without its predicted Sec-signal peptide, wildtype (WT) PBP4a was found mainly associated with the host cytoplasmic membrane, whereas Mut4KQ PBP4a remained largely unbound. After purification, the capacities of the two proteins to bind to B. subtilis membranes were compared. The results were similar to those obtained in E. coli: in vitro, a much higher percentage of WT PBP4a than of Mut4KQ PBP4a was found to interact with B. subtilis membranes. Immunodetection of PBP4a in B. subtilis membrane extracts revealed that a processed form of this PBP (as indicated by its size) associates with the B. subtilis cytoplasmic membrane. In the absence of any amphiphilic peptide in PBP4a, the crown of positive charges on the surface of domain II is likely responsible for the cellular localization of this PBP and its attachment to the cytoplasmic membrane. [less ▲]

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See detailWiMUAS: New inventory method to perform wildlife counts with UAS and review the large datasets
Linchant, Julie ULg; Lhoest, Simon ULg; Semeki, Jean et al

Conference (2015, October 13)

Detailed reference viewed: 31 (8 ULg)
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See detailPopulation density evaluation of Lepilemur mittermeieri in the Northwest Madagascar - Ampasindava peninsula
Commans, Morgane; Wilmet, Leslie ULg; Vermeulen, Cédric ULg

Scientific conference (2015, October 13)

Detailed reference viewed: 22 (10 ULg)