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See detailSTARS of HEAVEN - interview ( Chicago, Juin 2014)
Sacré, Robert ULg

in ABS Magazine (2014), (n° 43), 28-32

Interview des membres des Stars of Heaven ; photos

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See detailHow much time does it take for "experience design" to unfold?
Elsen, Catherine ULg; Leclercq, Pierre ULg

in Benz, Peter (Ed.) Designing Experiences: Positions and Approaches. (2014)

This paper specifically focuses on one aspect of the experience design process, sometimes even stressed as one if its shortcomings: the time it takes to properly gain insights about possible real-life ... [more ▼]

This paper specifically focuses on one aspect of the experience design process, sometimes even stressed as one if its shortcomings: the time it takes to properly gain insights about possible real-life experiences of proximal or distal end-users. In the process of making sense of sometimes conflicting viewpoints found in the literature about timing and its possible impact on design processes and outcomes, this paper compares four distinct settings and addresses the following research questions: • How “time-framing” the design process possibly filters (positively or negatively) the awareness designers have about end-users; • How the experimental protocols, their inherent limitations and artificialities, do shape the designers’ involvement in the process of designing for an end-user’s experience. Results put techniques for «disciplined creativity», such as brainstorming or analogies, front-to-front with more reflective approaches that unfold over more time, and discuss respective but complementary added values of both. [less ▲]

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See detailBioaccumulation of polybrominated diphenyl ethers (PBDEs) in Gammarus pulex: Relative importance of different exposure routes and multipathway modeling
Lebrun, Jérémie; Leroy, Delphine; Giusti, Arnaud ULg et al

in Aquatic Toxicology (2014), 154

Characterizing the exposure routes of an organism and its ability to regulate accumulated contaminants is a crucial step toward developing a biomonitor. To date, very little data are available on the ... [more ▼]

Characterizing the exposure routes of an organism and its ability to regulate accumulated contaminants is a crucial step toward developing a biomonitor. To date, very little data are available on the bioaccumulation kinetics of PBDEs in freshwater biota. This study aims at investigating the potential use of a litter-degrader widely distributed in European freshwaters, Gammarus pulex, as an indicator of exposure to PBDEs. In aquatic microcosms, gammarids were exposed to a mixture of brominated congeners (BDE-28, 47, 66, 85, 99, 100, 153, 154 and 183) to assess their ability to bioconcentrate PBDEs. Results show that all tested congeners are highly internalized by G. pulex and uptake rates of PBDEs are closely related to their partition coefficients (Kow). The determination of the elimination rate of BDE-47, the congener most readily accumulated by gammarids, indicated that metabolism and excretion of this congener are low in G. pulex, which argues in favor of its use as a quantitative biomonitor. Finally, bioaccumulation experiments were performed using contaminated leaves to determine the relative importance of dietary uptake in the contamination of gammarids. Even though water is the preeminent exposure route, a significant uptake of BDE-47 through food was observed (27%). We propose a biodynamic model that takes into account both exposure routes to describe BDE-47 bioaccumulation. This study supports the use of this ubiquitous amphipod as an early warning monitor of the bioavailable contamination of freshwaters by PBDEs. [less ▲]

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See detailThe Double-Sarcophagus of Hierapytna (Creta). A Reassessment
Veymiers, Richard ULg

Conference (2014, September)

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See detailLes objectifs de la formation des soignants en Education Thérapeutique du Patient : une proposition
Pétré, Benoît ULg; Guillaume, Michèle ULg; LEGRAND, Catherine et al

Conference (2014, September)

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See detailStand structure and species co-occurence in mixed and monodominant Central African tropical forests
Djuikouo, Marie Noël K.; Peh, Kelvin S.H.; Nguembou et al

in Journal of Tropical Ecology (2014), 30(5), 447-455

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See detailAutonomie de la volonté et concurrence régulatoire – le cas des relations familiales internationales
Wautelet, Patrick ULg

in Fulchiron, Hugues; Bergé, Jean-Sylvestre (Eds.) Vers un statut européen de la famille ? (2014)

L'autonomie de la volonté a connu un essor considérable dans le règlement des relations familiales internationales. Au-delà de la consécration toujours plus importante de l'autonomie de la volonté comme ... [more ▼]

L'autonomie de la volonté a connu un essor considérable dans le règlement des relations familiales internationales. Au-delà de la consécration toujours plus importante de l'autonomie de la volonté comme fondement de la règle de conflit de lois en matière familiale, la liberté des parties a reçu ces dernières années un appui important par le biais d'une jurisprudence ambitieuse tant de la Cour de justice de l'Union que de la Cour européenne des droits de l'homme. Dans le même temps, force est bien de constater que le droit de la famille semble constituer un îlot de résistance tenace face au mouvement d'unification et d'harmonisation. Les ingrédients semblent dès lors réunis pour le développement d'une véritable concurrence législative qui pourrait mener au spectre de la 'race to the bottom'. A l'offre de droits aux contenus différents se conjuge en effet une certaine possibilité de choix par les parties. Cette liberté de choix constitue un avatar évident de la mobilité qui fonde le pouvoir d'arbitrage des acteurs privés. La présente contribution a pour objectif de s'interroger sur l'existence réelle d'une telle concurrence normative. [less ▲]

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See detailMaster-narratives for science policy. The interplay of political discourses on Science in Wallonia.
Charlier, Nathan ULg

Conference (2014, September)

Both in Europe and in the United States, scientific research and science, technology and innovation (STI) policies have undergone profound changes for about thirty years. These transitions are often ... [more ▼]

Both in Europe and in the United States, scientific research and science, technology and innovation (STI) policies have undergone profound changes for about thirty years. These transitions are often framed along dichotomous lines : an ‘old regime’ characterized by strong public funding, independent academia and a linear conception of innovation has supposedly been replaced by a ‘new regime’ in which research and innovation are conceived in systemic terms, regarding their economic and societal relevance (Rip 2000). My proposal states that this conceptualization is of little use when it comes to studying the evolution of STI policies at the regional level. In this paper, I investigate how global master narratives like the “Knowledge-based Economy”, the “Grand societal Challenges”, “Science, the endless Frontier”, “Responsible Research and Innovation”, etc. are locally articulated, and thereby become grounded in regional STI policymaking, research, and innovation. These narratives, as explanatory resources and mobilizing resources, provide stakeholders with different visions; they are related to power relations between groups and individuals, to institutional settings and to policy trajectories. In my contribution, I study the four narratives in context; i.e. in different situated discourses of STI stakeholders. I consider multiple issues: who is telling what, to whom, why, when, where, and in which form. Instead of dichotomizing, investigating the evolutions of STI policies with a narrative framework provides an enriched description for complex local situations, towards a more political reading of the transitions. [less ▲]

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See detailExperimental evidence and numerical prediction of nonlinear modal interactions in a real-life aerospace structure
Renson, Ludovic ULg; Noël, Jean-Philippe ULg; Kerschen, Gaëtan ULg

in Proceedings of the ISMA 2014 conference (2014, September)

During the last decade, the existence of nonlinear behaviour in spacecraft dynamic testing was frequently attested. However, current practice in industry is still to ignore nonlinearities, arguably ... [more ▼]

During the last decade, the existence of nonlinear behaviour in spacecraft dynamic testing was frequently attested. However, current practice in industry is still to ignore nonlinearities, arguably because their analysis is regarded as impractical. The objective of the present contribution is to show that there now exists experimental and numerical methodologies which can deal with nonlinear phenomena in real-life structures. Specifically, this study investigates nonlinear modal interactions evidenced during the qualification campaign of the SmallSat spacecraft developed by EADS-Astrium. The ability to understand and reliably predict such interactions is of utmost importance as they may involve energy transfer between modes and, in turn, jeopardise the structural integrity. The paper proceeds in two steps, leading to great-fidelity reproductions of the experimental observations. In the first step, sine-sweep data collected during the qualification campaign are exploited to build a nonlinear computational model of the SmallSat with good predictive capabilities. To this end, the complete progression through nonlinearity detection, characterisation and parameter estimation is carried out by means of several techniques, such as the wavelet transform and the restoring force surface method. In the second step, the computational model is exploited through continuation algorithms to compute the nonlinear normal modes of the spacecraft and predict potential interactions. A very good agreement between experimental and numerical results is obtained for 2:1 interactions between modes with non-commensurate linear frequencies. [less ▲]

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See detailBatch enzymatic interesterification of fat blends using microwave
Danthine, Sabine ULg; Simon, C.; Richel, Aurore ULg et al

Poster (2014, September)

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See detailEffect of AMF enrichment with 13C-­‐triacylglycerol tracers on its thermal and structural behavior
Danthine, Sabine ULg; Vors, C.; Michalski, M-C

Poster (2014, September)

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See detailEvaluation of Temocillin for treatment of nosocomial infections
LAYIOS, Nathalie ULg; CIUTEA, Mirela ULg; LONGUEVILLE, Manon et al

Poster (2014, September)

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See detailThe puzzling new class of variable stars in NGC 3766 : old friend pulsators?
Salmon, Sébastien ULg; Montalban Iglesias, Josefa ULg; Reese, Daniel et al

in Astronomy and Astrophysics (2014), 569

The recent variability survey of the NGC 3766 cluster revealed a considerable number of periodic variable stars in a region of the H-R diagram where no pulsation is expected. This region lies between the ... [more ▼]

The recent variability survey of the NGC 3766 cluster revealed a considerable number of periodic variable stars in a region of the H-R diagram where no pulsation is expected. This region lies between the instability strips of the delta Scuti and SPB stars. Moreover the periods of the new phenomenon, P~0.1-0.7 d, do not allow to associate it a priori to either of these two types of pulsations. Stars in the NGC 3766 cluster are known as fast rotators with rotational velocities typically larger than half of their critical velocity. Rotation can affect both the geometrical properties and period domain of pulsations. It also alters the apparent stellar luminosity through gravity darkening, effect seldom taken considered in theoretical studies of the rotation-pulsation interaction. We explore if both of these effects are able to deliver a consistent interpretation for the observed properties of the "new variables" in NGC 3766: explaining their presence outside the known instability strips and their variability periods. We carry out an instability analysis of SPB models within the framework of the Traditional Approximation of Rotation and study the visibility of modes according to the angle of view and rotation. We also check how gravity darkening affects the effective temperature and luminosity of stellar models for different angles of view and rotation velocities. At the red (cold) border of the instability strip, prograde sectoral modes are preferentially excited and their visibilities are maximum when seen equator-on. Furthermore low-mass SPB models seen equator-on can appear in the gap between non-rotating SPB and delta Scuti stars due to gravity darkening. In that case, periods of these most visible modes are shifted to the 0.2-0.5 d range due to the effects of the Coriolis force. We hence suggest that the new variable stars observed in NGC 3766 are actually fast rotating SPB pulsators. [less ▲]

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See detailElicitor screening to protect winter wheat against Septoria tritici Blotch: preliminary results
Le Mire, Géraldine ULg; Deleu, Magali ULg; Ongena, Marc ULg et al

Conference (2014, September)

Elicitors are plant immunity-triggering compounds which are currently considered as one of the most promising tools in agriculture for the induction of plant resistance to various diseases (Mejía-Teniente ... [more ▼]

Elicitors are plant immunity-triggering compounds which are currently considered as one of the most promising tools in agriculture for the induction of plant resistance to various diseases (Mejía-Teniente et al., 2010). By contributing to both economic and environmental performances of agroecosystems, they can help reducing the use of chemical inputs. Although some elicitor products are already available on the market, it appears that a variable efficiency in the field, along with an uneasy integration in the current legislation and agricultural strategies, make these tools difficult to use (Walters, Ratsep, & Havis, 2013). Besides these limitations, few elicitor treatments have yet been efficiently and specifically designed to protect crop plants such as wheat, which is grown and consumed worldwide, against major diseases threatening both their yield and quality. There is a strong need to better understand the mechanisms of induced resistance in plants and develop elicitor use in agriculture. A phD research is currently led in Gembloux Agro Bio-Tech to develop a method based on eliciting agents, tested in greenhouse and field conditions, to protect winter wheat against major diseases, namely Septoria tritici, Fusarium graminearum and Fusarium culmorum. This project focuses on the screening of a large number of elicitors from different origins and structures. In 2014, we focused the first screening experiments on the protection of wheat against Septoria tritici Blotch (STB). Two winter wheat genotypes were tested: susceptible ‘Avatar’ and semi-resistant ‘Sy Epson’. Plants at 3-leaf stage were first sprayed till runoff with different concentrations of elicitors, and then inoculated 5 days later with a Septoria tritici spore suspension (106 spores mL-1) using a hand sprayer. Control plants were treated, prior to disease inoculation, with sterile water (negative control) or with BION® (ASM, Syngenta Europe; positive control). The disease severity and incidence were scored every 2 days for 28 days post-inoculation (d.p.i) by measuring the percentage of area covered with lesions and bearing pycnidia on the third leaf. The first results of these tests should enable a first discrimination of elicitors considering their dose-efficiency to reduce disease severity. After further screening of all the elicitors in hand, a determination of the elicitation pathways of the most efficient molecules tested will be undertaken. We intend to study the influence of various factors (i.e Temperature, relative humidity, plant development stage) on the elicitation potential and develop a formulation to be finally tested under field conditions. [less ▲]

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See detailTransfusion in aortic surgery
KOCH, Jean-Noël ULg

Conference (2014, September)

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See detailRetrospective study of ventilation after major aortic surgery
KOCH, Jean-Noël ULg

Conference (2014, September)

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