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See detailInfluence of the inter‐stage coupling flexibility on the dynamics of multi‐stage rotors
Nyssen, Florence ULg; Golinval, Jean-Claude ULg

in Proceedings of the ASME Turbo Expo 2016 (2016, June)

In this work, a characterization of the inter-stage coupling in a one-piece multi-stage bladed structure is performed. More particularly, the effect of the inter-stage coupling flexibility on the mode ... [more ▼]

In this work, a characterization of the inter-stage coupling in a one-piece multi-stage bladed structure is performed. More particularly, the effect of the inter-stage coupling flexibility on the mode-shapes is evaluated. To this purpose, the MAC matrix between the mono-stage and multi-stage modes is computed for different drum Young’s modulus of the inter-stage coupling. In parallel, the strain energy located in the blades and in the connecting structure is computed for different levels of inter-stage coupling. This enables to establish a criterion to determine when a multi-stage finite element analysis is necessary instead of only computing the different mono-stage models separately. This criterion is based on the localization of the energy in the structure. Numerical analyses are performed on a two-stages academic bladed structure. [less ▲]

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See detailECCO2 Removal The Perfusionists’ Perspective
HELLA, Dominique ULg

Conference (2016, June)

ECCO2 Removal, new technique, study to approve the methodology

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See detailMethodology to fish peptide ligands of nAChRs from Cone snail venoms by MALDI-TOF mass spectrometry
Echterbille, Julien ULg; Gilles, Nicolas; Araoz, Romulo et al

Poster (2016, June)

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

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

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See detailThe antioxidant responses differ between Symbiodinium strains from different geographic origins
Roberty, Stéphane ULg; Furla, Paola; Plumier, Jean-Christophe ULg

Conference (2016, June)

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

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

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See detailOptical design and optical properties of a VUV spectrographic imager for ICON mission
Loicq, Jerôme ULg; Kintziger, Christian ULg; Mazzoli, Alexandra ULg et al

in Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray (2016, June)

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

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

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See detailÉtude statistique de la syntaxe des lexèmes _chetif_, _dolent_, _las_ et _maleüré_ en français médiéval
Mazziotta, Nicolas ULg

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

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See detailSharing a Car? Yuck, No! An Investigation of Consumer Contamination in Access-Based Services
Hazee, Simon ULg; Delcourt, Cécile ULg; Van Vaerenbergh, Yves

Conference (2016, June)

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See detailEducation of instructors of a physical activity program for cancer patients and survivors: planning and evaluation of interactive adapted physical activity working groups
Rompen, Jérôme ULg; Korycki, Marta ULg; Ortmans, Sabine et al

Conference (2016, June)

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

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

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See detailECCO2 Removal; The Perfusionists’ Perspective
AMAND, Théophile ULg; KOCH, Jean-Noël ULg; HELLA, Dominique ULg

Conference (2016, June)

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

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See detailContext-dependent feature analysis with random forests
Sutera, Antonio ULg; Louppe, Gilles; Huynh-Thu, Vân Anh ULg et al

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

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See detailDirect control service from residential heat pump aggregation with specified payback
Georges, Emeline ULg; Cornélusse, Bertrand ULg; Ernst, Damien ULg et al

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

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

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

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See detailUn outil e-Health pour tous ? Le cas de l'informatisation du dossier infirmier au sein d'un hôpital belge
Slomian, Cynthia ULg; Schoenaers, Frédéric ULg

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

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

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

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See detailUpdating Failure Probability Of A Welded Joint In Offshore Wind Turbine Substructures
Mai, Anh Quang ULg; Sørensen, John D.; Rigo, Philippe ULg

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

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

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

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See detailAnalogical reasoning in children with Specific Language Impairment: Evidence from a scene analogy task
Krzemien, Magali ULg; Jemel, Boutheina; Maillart, Christelle ULg

Poster (2016, June)

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

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

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See detailCustomer Coping With Service Failures Across Cultures: A Multilevel Investigation
Van Vaerenbergh, Yves; De Keyser, Arne; Hazee, Simon ULg et al

Conference (2016, June)

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See detailBeyond stuttering : Speech disfluencies in normally fluent, French-speaking children at age four
Leclercq, Anne-Lise ULg; Suaire, Pauline; Moyse, Astrid

Poster (2016, June)

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

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

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See detailWelfare and the creation of Undocumented EU migrants in Belgium
Mescoli, Elsa ULg; Lafleur, Jean-Michel ULg

Conference (2016, June)

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See detailEffects of protein source and cooking procedure on intestinal microbiota and on fermentation end-products in rats
POELAERT, Christine ULg; Despret, Xavier; Portetelle, Daniel ULg et al

Poster (2016, June)

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

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

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See detailLe marquage et les soins vétérinaires appliqués aux camélidés d'après la documentation papyrologique grecque d’Égypte
Ricciardetto, Antonio ULg

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

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See detailMyoclonin-1 modulates the post-translational modification of microtubules
Medard, Laurie ULg; Coumans, Bernard ULg; Lakaye, Bernard ULg et al

Poster (2016, June)

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

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

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See detailSpeech characteristic of French-speaking children with Dysarthria: Pilot study
MacLeod, andrea; Maillart, Christelle ULg; Ancelle, J. et al

Poster (2016, June)

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See detailCultural stratigraphy at Sibudu and its implications for our understanding of the MSA
Conard, Nicholas; Miller, Christopher; Rots, Veerle ULg et al

Conference (2016, June)

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See detailProbabilistic reliability management approach and criteria for power system real-time operation
Karangelos, Efthymios ULg; Wehenkel, Louis ULg

in Power Systems Computation Conference (2016, June)

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

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

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See detailModeling, sensitivity analysis and parameter identification of a twin screw extruder
Grimard, Jonathan; Dewasme, Laurent; Thiry, Justine ULg et al

Conference (2016, June)

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See detailDetection of myocardial ischemic memory using 99mTc-fucoidan: preclinical validation
Mikail, N; Louedec, L; Aid, R et al

Conference (2016, June)

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See detailImpact d'un programme d'activation comportementale sur l'humeur, le niveau d'engagement dans des activités, les ruminations et les biais attentionnels chez des étudiantes universitaires
Krings, Audrey ULg; Wagener, Aurélie ULg; Blairy, Sylvie ULg

Poster (2016, June)

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

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

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See detailThe influence of customer characteristics on the customer need knowledge of frontline employees
Hüttel, Björn; Schumann, Jan Hendrik; Büttgen, Marion et al

Conference (2016, June)

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See detailPOP measurements: Tracking Down the Part in the Quintillion
Focant, Jean-François ULg

Conference (2016, June)

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See detailShedding Light on the Dark Side of Customer Participation: Investigating Customer Participation Stress
Treger, Stephanie; Büttgen, Marion; Schumann, Jan Hendrik et al

Conference (2016, June)

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See detailShedding Light on the Dark Side of Customer Participation: Investigating Customer Participation Stress
Treger, Stephanie; Büttgen, Marion; Schumann, Jan Hendrik et al

Conference (2016, June)

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See detailUnderstanding Usage Behaviour in a Peer-to-Peer Task Community
Deliège, Fanny ULg; Ates, Zelal ULg; Benoit, Sabine et al

Conference (2016, June)

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See detailOn the modeling of MMC for use in large scale dynamic simulations
Freytes, Julian; Papangelis, Lampros ULg; Saad, Hani et al

in Proceedings of the 19th PSCC (2016, June)

This paper focuses on simplified models of the Modular Multilevel Converter suitable for large-scale dynamic studies, in particular simulations under the phasor approximation. Compared to the existing ... [more ▼]

This paper focuses on simplified models of the Modular Multilevel Converter suitable for large-scale dynamic studies, in particular simulations under the phasor approximation. Compared to the existing literature, this paper does not a priori adopt the modeling approach followed for the original twolevel or three-level Voltage Source Converter. On the contrary, a model is derived following a physical analysis that preserves its average internal dynamic behavior. An equivalent control structure is proposed and various alternatives are highlighted. The proposed model with its controllers has been implemented in a phasor simulation software and its response has been validated against a detailed Electromagnetic Transient model. Finally, an illustrative example is presented with the application of the proposed model on a large grid consisting of AC areas interconnected with a multi-terminal DC grid. [less ▲]

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See detailPhotoionization as a Soft Ionization Source for Comprehensive Two-dimensional GC (GCxGC) and High-Resolution TOFMS
Ubukata, M; Cody, RB; Dane, J et al

Poster (2016, June)

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See detailDes mini-jeux pour apprendre - Retour d'expérience dans un cours de chimie à l'université
le Maire, Nathalie ULg; Colaux, Catherine ULg; Fauconnier, Marie-Laure ULg et al

Conference (2016, June)

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

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

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See detailA TOPSAR Processor based on the Omega-K Algorithm: Evaluation with Sentinel-1 Data
Kirkove, Murielle ULg; Orban, Anne ULg; De Rauw, Dominique ULg et al

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

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

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

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See detailFactorization of minimal substitutive subshifts
Leroy, Julien ULg

Conference (2016, June)

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See detailALERBLOT: Interest of 2D Immunoblot for the diagnosis of allergy to wheat
BERTHOLET, Catherine ULg; GADISSEUR, Romy ULg; quinting, birgit et al

in Allergy (2016, June), 71

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See detailMot à mot, brin par brin : les suites [Nom préposition Nom] comme indices de littérarité ?
Purnelle, Gérald ULg; Magri, Véronique; Legallois, Dominique

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

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

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

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See detailDelivering Bad News to Customers: An Employee Perspective
Delcourt, Cécile ULg; Gremler, Dwayne; Greer, Dominique

Conference (2016, June)

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See detailSome results about diametral dimensions
Demeulenaere, Loïc ULg

Poster (2016, June)

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

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

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See detailStructural classification and characterization of heavy petroleum base oil hydrocarbons by GC×GC-HR-TOF/MS
Giri, Anupam ULg; Courtiade, Marion; Racaud, Amandine et al

Conference (2016, May 31)

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See detailI Am Very Sorry Sir! Breaking Bad News to Customers
Delcourt, Cécile ULg; GREMLER, Dwayne; GREER, Dominique

Conference (2016, May 31)

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See detailIntegrated microfluidic device for gold nanoparticles synthesis
Emonds-Alt, Gauthier ULg; Malherbe, Cédric ULg; Monbaliu, Jean-Christophe ULg et al

Poster (2016, May 31)

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

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

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See detailPeak dispersion evaluation and optimization in GC×GC
Stefanuto, Pierre-Hugues ULg; Dimandja, Jean-Marie; Focant, Jean-François ULg

Poster (2016, May 30)

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See detailGC×GC-HRTOFMS to better understand cloak-and-dagger activities of Madagascar Mantella frogs
Stefanuto, Pierre-Hugues ULg; Brasseur, Catherine; Cecchini, Harisoa et al

Poster (2016, May 30)

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See detailEstetrol, a natural SERM exhibiting combined estrogenic and anti-estrogenic properties on mammary gland and breast cancer
Gallez, Anne ULg; Gérard, Céline ULg; BLACHER, Silvia ULg et al

Poster (2016, May 30)

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

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

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See detailGC×GC-TOFMS for forensic blood VOC profiling
Dubois, Lena ULg; Perrault, Katelynn ULg; Stefanuto, Pierre-Hugues ULg et al

Poster (2016, May 30)

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See detailL’initiative citoyenne européenne : porte ouverte des institutions européennes pour le citoyen?
Debras, François ULg; Nossent, Jérôme ULg

Conference (2016, May 27)

L’objectif de notre recherche n’est pas de nous concentrer sur la création ni sur le parcours d’une initiative citoyenne européenne mais bien d’étudier les conséquences politiques qui ont suivi ces ... [more ▼]

L’objectif de notre recherche n’est pas de nous concentrer sur la création ni sur le parcours d’une initiative citoyenne européenne mais bien d’étudier les conséquences politiques qui ont suivi ces initiatives. Pour ce faire, et compte tenu de la proximité temporelle du lancement du procédé, nous proposons de concentrer notre analyse sur les différentes suites qui furent données à la première des trois propositions ayant abouti, « Right2water ». Hormis la réponse obligatoire de la Commission, nous analysons l’impact et la mobilisation des enjeux de l’initiative par les institutions, les partis politiques, les députés européens et nationaux. L’initiative citoyenne européenne s’est-elle traduite en règlements ? En propositions ? A-t-elle été récupérée dans des programmes et discours politiques ou, à l’inverse, a-t-elle été écartée de l’agenda politique européen ? En d’autres mots, les propositions citoyennes ont-elles un poids sur la scène politique européenne ? L’initiative ouvre-t-elle la porte des institutions aux revendications des citoyens ? [less ▲]

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See detail• BibliothEP: a study evaluating the effectiveness of bibliotherapy for premature ejaculation
Kempeneers, Philippe ULg; Andrianne, Robert ULg; Bauwens, Sabrina et al

Conference (2016, May 27)

Objective. The BibliothEP study aimed to assess the efficacy of a bibliotherapy for premature ejaculation (PE) Design and method. The study was conducted in two phases. First, a sample of 120 participants ... [more ▼]

Objective. The BibliothEP study aimed to assess the efficacy of a bibliotherapy for premature ejaculation (PE) Design and method. The study was conducted in two phases. First, a sample of 120 participants suffering from PE read a concise cognitive behavioural self-help manual for PE (51 A5 pages including illustrations) and were compared after treatment to 66 waiting list controls. Second, 36 subjects received and read the self-help manual and were compared after treatment to 32 subjects having received the same manual plus a complementary brief guidance (45-90 minutes) from a coach not specialised in sex therapy, but who had been specifically trained to support the bibliotherapy intervention (by attending a 5-hour training module). The main outcome measures were self-determined latency time to ejaculation, feelings of control, sexual satisfaction, PE-related distress and subjective impression of improvement. Results. At 6-month posttreatment, all participants showed significant improvements as compared to waiting list condition. The improvements were maintained at 12 month. They were slightly greater in the case of complementary therapist support. Improvements were demonstrated for all forms of PE, but the intervention appeared to be slightly more effective when the problem was of moderate severity. In all cases, improvements in sexual functioning were accompanied by improvements in sexual cognitions. Conclusions. The cost-effectiveness of the self-help manual makes it a valuable first-line treatment for any form of PE. Moreover, the outcome of the bibliotherapy process might be increased by coaching from a health worker specifically trained to this aim. [less ▲]

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See detailExposition et mythologie mass-médiatique : le cas Jean Paul Gaultier (Paris, 2015)
Duchesne, Caroline ULg

Conference (2016, May 27)

Présentation d'une étude de cas envisageant les contaminations réciproques entre culture de masse et haute culture.

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See detailSingle molecule force spectroscopy on helical foldamers
Devaux, Floriane ULg; Li, Xuesong; Huc, Ivan et al

Poster (2016, May 27)

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See detailOn the laser additive manufacturing of metal matrix composites
Mertens, Anne ULg; L'Hoest, Thibaut; Lecomte-Beckers, Jacqueline ULg et al

Conference (2016, May 27)

This paper reviews the challenges and opportunities related to the production of of metal matrix composites (MMCs) and functionally graded materials (FGMs) by additive manufacturing laser-based ... [more ▼]

This paper reviews the challenges and opportunities related to the production of of metal matrix composites (MMCs) and functionally graded materials (FGMs) by additive manufacturing laser-based technologies. Special attention is given to issues such as the stability of the reinforcement particles under the laser beam, particles’ dissolution in the metallic melt pool and interfacial reactions between the particles and the metallic matrix. Illustrations are taken from a preliminary investigation, by the MMS Unit, into the laser cladding of stainless steel + carbides composite coatings, as well as from the open scientific literature. [less ▲]

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See detailSubstrats neuronaux de l'encodage non réussi dans le vieillissement
François, Sarah ULg; Angel, Lucie; Salmon, Eric ULg et al

Conference (2016, May 27)

Objectifs En utilisant l'IRM fonctionnelle, nous nous sommes intéressés à l'effet de l'âge sur les substrats neuronaux de l'encodage non réussi – l'activation à l'encodage pour les items oubliés par la ... [more ▼]

Objectifs En utilisant l'IRM fonctionnelle, nous nous sommes intéressés à l'effet de l'âge sur les substrats neuronaux de l'encodage non réussi – l'activation à l'encodage pour les items oubliés par la suite. Méthodologie Dans un scanner IRM, nous avons soumis des volontaires (20 jeunes et 19 âgés) à une tâche de mémoire épisodique avec consignes d'encodage incident. Durant celle-ci, des dessins d'objets en noir et blanc leur étaient présentés. Il leur était demandé d'effectuer un jugement de taille sur ces objets. Ensuite, toujours dans le scanner, les objets de la phase d'encodage ainsi que de nouveaux objets leurs étaient présentés afin d'évaluer leur reconnaissance de ceux-ci. Pour ce faire, les volontaires effectuaient un jugement de Recollection/Familiarité/Nouveauté. Résultats Les résultats comportementaux montrent une recollection altérée mais une familiarité préservée chez nos volontaires âgés. L'analyse des résultats IRM a été effectuée selon un design évènementiel (SPM8), dans lequel nous avons comparé les aires cérébrales activées à l'encodage pour les items qui n'ont pas été reconnus ultérieurement et pour ceux qui ont donné lieu à un jugement de recollection (p<.001 non-corrigé). Dans les deux groupes, un pattern d'activation correspondant au réseau du mode par défaut (RMD). Chez les volontaires âgés, les résultats ont également mis en évidence une activation supplémentaire du réseau attentionnel fronto-pariétal. Ensuite, le contraste entre les activations pour les items qui n'ont pas été reconnus ultérieurement et ceux qui ont donné lieu à un jugement de familiarité a aussi mis en évidence des régions du RMD, mais dans une moindre mesure. En effet, les activités communes aux deux groupes d'âge n'ont montré qu'une activation du précuneus. Discussion Comparé à la recollection, l'oubli d'informations semble associé, à l'encodage, à un recrutement accru du RMD qui pourrait refléter une incapacité à mettre en place des processus d'encodage efficaces, à la fois chez les jeunes adultes et les adultes plus âgés. De plus, l'activation supplémentaire du réseau fronto-pariétal chez ces derniers pourrait indiquer un fonctionnement moins différencié des réseaux cérébraux associés à l'encodage en mémoire. Lorsque l'on compare l'oubli d'informations à la familiarité, l'activation moindre du RMD pourrait suggérer qu'un certain niveau d'activation du RMD (et donc la présence de pensées étrangères à la tâche) n'empêche pas forcément toute reconnaissance sur base d'un sentiment de familiarité. [less ▲]

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See detailSubstrats cérébraux du contrôle proactif et réactif dans le vieillissement non pathologique
Manard, Marine ULg; François, Sarah ULg; Salmon, Eric ULg et al

Poster (2016, May 27)

Les recherches sur le contrôle cognitif proposent l’apparition d’un déclin lié à l’âge dans les capacités de contrôle proactif (forme anticipatoire de contrôle comportemental) alors que le contrôle ... [more ▼]

Les recherches sur le contrôle cognitif proposent l’apparition d’un déclin lié à l’âge dans les capacités de contrôle proactif (forme anticipatoire de contrôle comportemental) alors que le contrôle réactif (forme réactionnelle à la détection d’un conflit) semble rester intact [1]. Ces deux formes de contrôle ont été associées à des aires cérébrales différentes [2], cependant peu d’études ont étudié les effets de l’âge sur les régions cérébrales sous-tendant chacun de ces deux types de contrôle. Pour ce faire, une version adaptée de la tâche de Stroop a été administrée à 16 jeunes (18-30 ans) et 16 adultes (60-75 ans) en IRM fonctionnelle. Cette version de la tâche variait la quantité d’items interférents, permettant la création de trois contextes (Mostly Congruent « MC », Mostly Incongruent « MI » et Neutre) favorisant respectivement la mise en place des deux types de contrôle (réactif = congruent / proactif = incongruent). Les analyses ont été réalisées avec SPM8 (p<.001 non-corrigé). Les résultats comportementaux révèlent un traitement plus rapide de l’interférence dans le contexte « MI » que « MC » pour les jeunes adultes uniquement. Au niveau cérébral, le traitement de l’interférence en MI semble associé à une diminution d’activité (surtout à droite) dans les régions frontales et temporales chez les volontaires âgés par rapport aux plus jeunes, alors qu’en MC, les âgés montrent une augmentation d’activité bilatérale au niveau frontal. Ainsi, les résultats comportementaux montrent que les adultes âgés semblent avoir plus de difficultés à implémenter un contrôle proactif (associé à une diminution d’activité) que les jeunes dans les régions sous-tendant la performance à cette tâche. Cependant, le recrutement supplémentaire de régions frontales observé lors du contexte MC postulé pour favoriser le contrôle réactif, suggère la présence de mécanismes de compensation. Pour conclure, le vieillissement semble affecter de manière différentielle l’activité des régions cérébrales sous-tendant les différents types de contrôle. [less ▲]

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See detailRedrawing Comics into the Graphic Novel: the Historiography of Comics, Canonization, and Authors’ Histories of the Medium
Crucifix, Benoît ULg

Conference (2016, May 26)

The development of comics studies in the United States has been linked to the institutionalization of the ‘graphic novel’ as a ‘literary’ subset of comics deemed worthy of academic attention. Several ... [more ▼]

The development of comics studies in the United States has been linked to the institutionalization of the ‘graphic novel’ as a ‘literary’ subset of comics deemed worthy of academic attention. Several voices in North-America are now challenging the need for canon formation by arguing for other approaches to the historiography of comics beyond the graphic novel. Histories and definitions, however, as Thierry Smolderen argues, are not only written by scholars, but generated by a multiplicity of social groups actively participating in the ongoing negotiation of what the medium ‘is’. Drawing on these recent trends, I will engage in a disciplinary reflection on the historiography of comics by focusing on authors' histories of the medium. Cartoonists themselves indeed act as comics historians: suffice to think of Jules Feiffer's pioneering The Great Comic Book Heroes (1965). ‘Graphic novelists’ as Chris Ware, Art Spiegelman, Seth or Daniel Clowes have been deeply engaged in recovering the past of comics in their works as well as in essays, reprints, or exhibitions. These histories are fragmentary, emotionally charged and at times anachronistic, but they complicate teleological accounts of the graphic novel, disrupting the academic canon. Confronting this perspective with recent insights in literary historiography, I will attempt to examine some of the specific epistemological issues raised by cartoonists' histories of comics in their divergence or convergence with other historiographic trends such as fanzines and academic research. [less ▲]

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See detailDESIGN OF HIGH-AFFINITY LIGANDS FOR THE BENZOTHIADIAZINE ALLOSTERIC BINDING SITE OF THE AMPA RECEPTORS
Drapier, Thomas ULg; Geubelle, Pierre ULg; Bouckaert, Charlotte et al

Poster (2016, May 26)

L-glutamic acid is the major excitatory neurotransmitter in the brain. It exerts its effects through metabotropic and ionotropic receptors. Among the latter, three subtypes have been identified: NMDA ... [more ▼]

L-glutamic acid is the major excitatory neurotransmitter in the brain. It exerts its effects through metabotropic and ionotropic receptors. Among the latter, three subtypes have been identified: NMDA, AMPA and KA receptors. It is now well established that a deficit in glutamatergic signaling may be responsible for neurological disorders such as mild cognitive impairment, schizophrenia, depression, and ADHD. Enhancement of the signal through positive allosteric modulators of AMPA receptors might be a therapeutic issue for these diseases. These compounds are expected to exert a fine tuning of the signal. Since they require the presence of the endogenous ligand to be active, they are expected to induce less toxicity than agonists. In this context, based on the structure of known allosteric modulators of AMPA receptors such as cyclothiazide and IDRA 21, the Laboratory of Medicinal Chemistry (University of Liège) has developed a series of 1,2,4-benzothiadiazine 1,1-dioxides with high potency as AMPA receptor potentiators. Crystallographic data obtained by the Department of Drug Design and Pharmacology (University of Copenhagen) highlighted those potentiators bind to two contiguous sites at the dimer interface of the ligand binding domain (LBD) of the AMPA receptor1,2. Based on these data, we may expect that the synthesis of dimeric molecules could lead to further improvement in affinity and activity. This assumption was reinforced by docking experiments conducted with virtual examples of dimeric compounds on the GluA2-LBD (collaboration with NAMEDIC). The present work is thus focusing on the preparation of a family of dimeric benzothiadiazine dioxides. Moreover, in collaboration with GIGA-Molecular Pharmacology, we are developing a pharmacological in vitro assay based on the measurement of Ca2+ inflow through a fluorimetric method. This medium-throughput screening will enable the characterization of our new compounds and the validation of our working hypothesis. [less ▲]

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See detailEntre Rome, Bruxelles et l’Espagne. Une légation au service de la Monarchie de Philippe II
Regibeau, Julien ULg

Conference (2016, May 26)

La légation des Pays-Bas espagnols et de la Franche-Comté près le Saint-Siège au temps de l’agent Laurent du Blioul (1573-1598) n’a jamais véritablement rencontré l’intérêt des historiens. Cela est ... [more ▼]

La légation des Pays-Bas espagnols et de la Franche-Comté près le Saint-Siège au temps de l’agent Laurent du Blioul (1573-1598) n’a jamais véritablement rencontré l’intérêt des historiens. Cela est certainement dû à son manque d’envergure apparent. En effet, elle est, à cette époque, soumise à l’ambassadeur espagnol de Philippe II à Rome et la marge de manœuvre de son agent semble réduite au suivi technique des affaires ecclésiastiques des pays de par-deçà et de par-delà défendues devant la Curie. Une analyse sociopolitique de l’institution permet cependant de nuancer le propos. En dégageant la place que la légation occuperait au sein des puissants réseaux de pouvoir romains de la Monarchie, on constate en effet que celle-ci est loin d’être marginalisée. Au contraire, à travers l’action de son agent, elle est capable d’utiliser mais aussi d’entretenir et d’accroitre l’influence que la royauté exerce sur la ville. Sachant employer efficacement les nombreuses ressources exogènes qu’elle a à sa disposition, l’institution n’apparait alors plus comme le reflet d’une décadence diplomatique des Pays-Bas qui découlerait de l’éclatement et de l’enlisement de la Révolte. Au contraire, elle trouve sa place dans une certaine logique d’incorporation inhérente à la monarchie de Philippe II. Après quelques considérations autour des missions de la légation, cette communication se concentrera avant tout sur le rôle de son agent, Laurent du Blioul. Membre d’une dynastie de gens de robe au service de la maison d’Autriche depuis la fin du XVe siècle, il conserve un souvenir vivace de ces liens, vecteurs de prestige et d’ascension sociale. Nous montrerons en quoi ce service implique des liens d’obligations réciproques entre les du Blioul et leur souverain. [less ▲]

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See detailLa médiation du média : adresse au lecteur, positions, dispositions
Servais, Christine ULg

Conference (2016, May 26)

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See detailUnderstanding the effect of thermal treatments on the ductility of LBM AlSi10Mg
Mertens, Anne ULg; Dedry, Olivier ULg; Lecomte-Beckers, Jacqueline ULg et al

Conference (2016, May 26)

This communication reviews the additive manufacturing activities of the MMS Unit, University of Liège, with a particular focus on the study of post-processing treatments of Al alloy AlSi10Mg. Al alloy ... [more ▼]

This communication reviews the additive manufacturing activities of the MMS Unit, University of Liège, with a particular focus on the study of post-processing treatments of Al alloy AlSi10Mg. Al alloy AlSi10Mg processed by Laser Beam Melting (LBM) exhibits a much finer microstructure than its cast counterpart due to the ultra-fast cooling rates imposed in the LBM process. One important consequence of this microstructural refinement is that a classical T6 age hardening heat treatment will not have the same effect on LBM AlSi10Mg when compared with cast AlSi10Mg. Indeed, a previous study by the present authors has shown that heat treating LBM AlSi10Mg at 510°C for 6 hours followed by a second isothermal hold at 170°C for 6 hours brought a marked improvement of the yield stress by 30% and of the elongation at break by 220%. However, this was achieved at the expense of a decrease in both hardness and ultimate tensile strength. A better understanding of the underlying phenomena is needed in order to optimize the heat treatment of LBM AlSi10Mg. The present work hence aims at investigating in more depth the mechanical and microstructural evolution induced upon heat treating LBM AlSi10Mg. [less ▲]

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See detailEntre Rome, Bruxelles et l’Espagne : le confesseur du gouverneur-général, quelles loyautés ?
Pirlet, Pierre-François ULg

Conference (2016, May 26)

Les Pays-Bas catholiques de la première moitié du XVIIe siècle constituent un ensemble politique placés sous la direction d'un gouverneur-général de sang royal ou issu de la haute noblesse hispanique. La ... [more ▼]

Les Pays-Bas catholiques de la première moitié du XVIIe siècle constituent un ensemble politique placés sous la direction d'un gouverneur-général de sang royal ou issu de la haute noblesse hispanique. La cour de ce Prince est organisée sur le modèle madrilène : il est ainsi assisté par un confesseur particulier, choisi par le gouvernement royal pour ses qualités et pour son appartenance à l'un ou l'autre ordre religieux. Les religieux successifs qui occupent la charge font l'objet d'une attention soutenue de la part de différents acteurs politiques : le gouverneur-général lui-même, les courtisans bruxellois, le gouvernement royal, les ordres religieux et la papauté observent avec attention l'action de ces confesseurs. La vision qu'a Rome de ces clercs est celle d'alliés objectifs. Il est entendu que ceux-ci doivent naturellement assister le nonce en toute occasion et contribuer à asseoir la politique romaine en terres habsbourgeoises. Pourtant, à Bruxelles, les principaux intéressés ne suivent pas assidûment cette ligne directrice. Ma communication proposera d'étudier, sur la base de sources issues des Archives générales du Royaume de Belgique et de l'Archivo General de Simancas, l'attitude d'une série de confesseurs princiers actifs dans la grande première moitié du XVIIe siècle face aux attentes de la papauté et de ses représentants dans le but de comprendre dans quelle mesure ce clerc contribua à – ou se tint éloigné de – la politique telle que voulue depuis Rome. Je tâcherai également de recenser et de comprendre les loyautés – à Madrid, à Bruxelles et à Rome – conditionnant l'action de ce religieux. [less ▲]

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See detailBrain breaks in the classroom. An example of implementation in Belgium
Cloes, Marc ULg; Cloes, Stéphanie

Conference (2016, May 26)

School is identified as the main pillar of the fight against sedentariness in youth. Several models of active schools have been described in the literature and, under the umbrella of the school policy ... [more ▼]

School is identified as the main pillar of the fight against sedentariness in youth. Several models of active schools have been described in the literature and, under the umbrella of the school policy enhancing physical activity (PA), five main dimensions can be identified (Physical education, Active transportation, Life environment, Sport at school, PA in the classroom). This underlines that, if the PE teacher is considered as the corner stone of the PA promotion at school, (s)he is not alone to create the conditions aiming to permit to the children to reach the PA level recommended daily. Integrating more PA in the classroom seems to be a promising approach for children lifestyle as well as for their overall learning. Worldwide, initiatives are proposed in order to convince classroom teachers to integrate more often PA in their educational activities. Nowadays, it seems determining to share experiences in order to identify good practices and solutions to the current problems that teachers can encountered on the field. The goal of this presentation is to illustrate two concrete examples of projects implemented in primary schools in Wallonia, Belgium. We will describe the teaching context as well as the main findings provided by a systematic data analysis conducted during these experiments. The first study focused on three classes proposing Brain Breaks (BB) videos during a 10 weeks period. The attitude of the pupils and the teaching staff opinions were analyzed. In the second study, varied PA breaks (BB video, games, and video developed by the pupils) were proposed during periods of two to four weeks. Data from participant observation and questionnaires were used. In both studies, findings support the planning of PA during classroom. Even if more controlled research designs would be necessary in order to determine the evidence of the results, we can state that practitioners and children involved in the projects showed really positive reactions about these opportunities to be more active. [less ▲]

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See detailÀ la redécouverte d’une série d’autels égyptisants romains
Veymiers, Richard ULg

Conference (2016, May 25)

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See detailDenCity: Zero Energy Light Weight Construction Households for Urban Densification
Amer, Mohamed ULg; Attia, Shady ULg

in Rencontres Universitaires de Génie Civil de l'AUGC (2016, May 25)

This paper is a part of an ongoing research in the field of sustainable urban densification through providing innovative solutions for zero energy light weight construction. The focus aim of this research ... [more ▼]

This paper is a part of an ongoing research in the field of sustainable urban densification through providing innovative solutions for zero energy light weight construction. The focus aim of this research is to identify the gaps in the construction solutions for roof stacking, to feed in the innovation pipeline of the European construction landscape in the coming years. This paper presents a comprehensive review of different case studies and efforts in the field of roof raising and its repetition potentials. Based on a structured review, 8 different cases from three different European countries were sorted, placing a variety of methods in comparison with each other. The main contribution of this review lies in the analyses of the existing information in this field and the classification of the different validated methods and approaches that has been used. Finally, despite the existing challenges, it was found that the concept of roof stacking can be widely spread and applied in different contexts. Future research is going to investigate possible solution and to formulate structured scientific approaches to widen its application. [less ▲]

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See detailPériurbanisation et efficacité de l'usage de la ressource foncière à Kinshasa
Messina Ndzomo, Jean Pierre ULg; Mate, Jean-Pierre; Halleux, Jean-Marie ULg

Conference (2016, May 25)

Kinshasa est la capitale de la République Démocratique du Congo et la plus grande ville francophone d’Afrique subsaharienne sur le plan démographique et spatial. Alors que Kinshasa comptait 400 000 ... [more ▼]

Kinshasa est la capitale de la République Démocratique du Congo et la plus grande ville francophone d’Afrique subsaharienne sur le plan démographique et spatial. Alors que Kinshasa comptait 400 000 habitants en 1960, son volume de population est actuellement estimé entre 8 et 12 millions d’habitants. La forte croissance démographique de cette ville, dont le taux de progression se situerait autour de 4 % depuis 2000, justifie sa dynamique spatiale. La conséquence immédiate est l’étalement urbain et une urbanisation non maitrisée favorisés par l’accroissement de la demande en logement. La crise du logement est de plus en plus forte dans un contexte marqué par une faiblesse des politiques publiques sur l’habitat. La géographie urbaine de Kinshasa connait, en conséquence, de profondes mutations depuis quelques décennies, des quartiers centraux et péricentraux se densifient et des lotissements périurbains colonisent de vastes territoires. Plus spécifiquement la périurbanisation, phénomène d’étalement des villes, s’y impose très largement. La présente communication porte sur notre projet de thèse qui cherche à comprendre les relations entre les mécanismes fonciers et la production de l’urbanisation à Kinshasa. De manière synthétique, la recherche est basée sur l’hypothèse que l’urbanisation de Kinshasa est spatialement inefficace. Elle est de plus en plus éloignée du centre-ville et des axes principaux et colonise vraisemblablement les zones physiquement inappropriées à l’urbanisation. Il ressort de notre revue de la littérature que l’urbanisation de Kinshasa résulte de dynamiques variées. D’un côté, nous assistons à une très forte densification de certains quartiers. D’un autre côté, la ville connaît un étalement urbain qui s’accompagne du développement de quartiers périphériques à faible densité. La première partie de notre travail vise à quantifier le phénomène d’urbanisation à Kinshasa. Cette quantification sera établie sur base des sources statistiques disponibles. Elle mobilisera également les techniques de la télédétection, afin de suivre l’évolution spatiale de la croissance urbaine. Cette partie du travail permettra notamment de vérifier l’hypothèse consistant à considérer que la croissance de Kinshasa oppose et conjugue des dynamiques de forte densification à des dynamiques d’étalement urbain. C’est cette partie du travail qui devra notamment permettre de vérifier si les logiques d’étalement urbain engendrent un gaspillage de ressources foncières préjudiciables aux activités de l’agriculture (péri) urbaine et au maintien du couvert forestier. La seconde partie de notre travail consistera dans le développement d’enquêtes. Des enquêtes seront menées auprès de deux publics cibles : d’une part, les acteurs actifs dans la production urbaine et, d’autre part, les populations. Enquêter auprès des acteurs de la production urbaine (architectes, promoteurs, planificateurs, chefs traditionnels, administrations : urbanisme, habitat et affaires foncières,…) devra permettre une compréhension des mécanismes fonciers et immobiliers qui alimentent la production du logement à Kinshasa (nous pensons en particulier au rôle des prix et des valeurs sur les phénomènes de densification et d’étalement urbain). En parallèle, enquêter auprès des populations visera à évaluer le niveau d’efficacité spatiale de l’urbanisation mise en place. Développer ce sujet de l’efficacité spatiale consistera à vérifier si, d’un côté, la densification n’atteint pas des niveaux critiques et si, d’un autre côté, l’étalement ne conduit pas à des déplacements – et donc à des coûts de transport – inutiles. [less ▲]

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