References of "2012"
     in
Bookmark and Share    
Full Text
See detailEjecta around evolved massive stars observed with Herschel
Vamvatira-Nakou, Chloi ULg; Hutsemekers, Damien ULg; Royer, P. et al

Conference (2012, March)

Detailed reference viewed: 15 (6 ULg)
Full Text
See detailNumerical and physical hydraulic modelling of Piano Key Weirs
Erpicum, Sébastien ULg; Machiels, Olivier ULg; Dewals, Benjamin ULg et al

in Proceedings of the 4th Int. Conf. on Water Resources and Renewable Energy Development in Asia (2012, March)

During the last few years, several piano key weirs (PKWs) have been built in France by Electricité de France (EDF). Thanks to the reduced footprint and high release capacities of this new type of weir ... [more ▼]

During the last few years, several piano key weirs (PKWs) have been built in France by Electricité de France (EDF). Thanks to the reduced footprint and high release capacities of this new type of weir, making it particularly suited for concrete dams rehabilitation, lots of other projects in varied countries are under construction or study. The prototype use of PKW requires knowledge about its structural behaviour, hydraulic capacities as well as integration into dams’ environment. This paper aims at presenting numerical and physical modelling works performed at the University of Liege to address the last two points. In particular, large scale physical modelling and parametric scale models enabled to understand the hydraulic behaviour of the structure and to highlight its main geometric parameters as well as their best variation interval depending on various criteria related to the weir design (discharge efficiency, cost…). A 1D numerical model has also been developed based on these experimental investigations. It enables to predict in a few minutes, with 10% accuracy, the discharge capacity of a given PKW geometry on its usual operation head range. This model, available as a freeware on http://www.pk-weirs.ulg.ac.be, constitutes a key tool for the first design of such weirs. Finally, the scale model studies of major projects such as Raviège dam (France) for EDF and Ouldjet Mellegue Project (Algeria) for Coyne et Bellier – Tractebel Engineering enable to confront theoretical predictions with experimental results and to address the problem of PKW integration on dam crests. [less ▲]

Detailed reference viewed: 95 (3 ULg)
Full Text
Peer Reviewed
See detailPilot Trial of STAR in Medical ICU
Fisk, Liam M.; Le Compte, Aaron J.; Shaw, Geoffrey M. et al

Poster (2012, March)

Detailed reference viewed: 2 (1 ULg)
Full Text
Peer Reviewed
See detailProtocol 3 : Belgian innovative projetcs to help community dwelling frail elderly
de Almeida Mello, J; Maggi, Patrick ULg; Van Durme, T et al

Poster (2012, March)

Detailed reference viewed: 22 (8 ULg)
Full Text
Peer Reviewed
See detailDeterminants of sickness absence duration after an occupational back injury in the Belgian population
Mazina, Déogratias; Donneau, Anne-Françoise ULg; Mairiaux, Philippe ULg

in American Journal of Industrial Medicine (2012), 55(3), 270-280

Background This study aimed at assessing factors associated to the duration of sickness absence after a back injury in the Belgian working population, with a special emphasis on cultural factors. Methods ... [more ▼]

Background This study aimed at assessing factors associated to the duration of sickness absence after a back injury in the Belgian working population, with a special emphasis on cultural factors. Methods The data were retrieved from the Belgian Fund for Work Accidents database over a three-year period (2001-2003). The population source involved all Belgian workers under a job contract in the private sector registered as compensated cases for an accident that occurred at the workplace (n=558276). From that database, all back injury cases involving a complete data set and registered during the first 6 months of each year (n= 11262) were selected and eight factors (gender, age, seniority in the current job, job category, accident regional location, enterprise size, sector of activity and accident circumstances) were analyzed in relation to the outcome variable, sick leave duration recorded as ordered time intervals between 0 day and 183-366 days. Results Sick leave duration was strongly associated in a multivariate model to age (>= 40 years: OR=2.18), blue collar job (1.55), work in building industry (1.32) and enterprise size (>100 : 0.85), and to a less extent to seniority (>10y: 0.88), and circumstance of accident (falls: 1.26). Injuries occurring in the French-speaking part of the country were associated to a longer sick leave (1.07; p=0.034). Conclusions This study shows that besides well-known risk factors, subtle cultural language-linked factors and/or regional differences in economic climate may significantly influence the length of disability period after a back injury. [less ▲]

Detailed reference viewed: 39 (14 ULg)
See detailThéâtre et engagement
Pichault, François ULg

Conference (2012, March)

Detailed reference viewed: 15 (0 ULg)
Peer Reviewed
See detailEvidence of a complex phylogeographic structure in the common dormouse, Muscardinus avellanarius (Rodentia: Gliridae)
Mouton, Alice ULg; Grill, Andrea; Sara, Maurizio et al

in Biological Journal of the Linnean Society (2012), 105(3), 648-664

This is the first mitochondrial phylogeography of the common dormouse, Muscardinus avellanarius (Linnaeus, 1758), a hibernating rodent strictly protected in Europe (Habitat Directive, annex IV; Bern ... [more ▼]

This is the first mitochondrial phylogeography of the common dormouse, Muscardinus avellanarius (Linnaeus, 1758), a hibernating rodent strictly protected in Europe (Habitat Directive, annex IV; Bern Convention, annex III). The 84 individuals of M. avellanarius, sampled throughout the distributional range of the species, have been sequenced at the mitochondrial DNA gene (cytochrome b, 704 base pairs). The results revealed two highly divergent lineages, with an ancient separation around 7.7 Mya and a genetic divergence of 7.7%. Lineage 1 occurs in Western Europe (France, Belgium, and Switzerland) and Italy, and lineage 2 occurs in Central–Northern Europe (Poland, Germany, Latvia, and Lithuania), on the Balkan Peninsula, and in Turkey. Furthermore, these two lineages are subdivided into five sublineages genetically isolated with a strong geographical association. Therefore, lineage 1 branches into two further sublineages (Western European and Italian), whereas lineage 2 contained three sublineages (Central–Northern European, Turkish, and Balkan). We observed low genetic diversity within the sublineages, in contrast to the significant level of genetic differentiation between them. The understanding of genetic population structure is essential for identifying units to be conserved. Therefore, these results may have important implications for M. avellanarius conservation. [less ▲]

Detailed reference viewed: 20 (4 ULg)
Full Text
Peer Reviewed
See detailArt public : entre pratiques sauvages et commandes officielles
Hagelstein, Maud ULg

in Cahiers nouveaux - Trimestriel du Développement territorial (2012), 81

L’expression «art public» désigne l’ensemble des oeuvres d’art qui ont été commandées, planifiées et exécutées en vue d’être placées dans un espace public. Partant de cette définition sommaire, on ... [more ▼]

L’expression «art public» désigne l’ensemble des oeuvres d’art qui ont été commandées, planifiées et exécutées en vue d’être placées dans un espace public. Partant de cette définition sommaire, on pourrait être tenté d’établir une différence entre un art public de commande et un art public plus sauvage : d’un côté, une instance publique souhaite qu’un artiste produise une oeuvre reflétant l’état d’esprit d’un environnement urbain donné et de ses habitants ; de l’autre, les artistes font des percées intempestives dans le paysage visuel de la ville – et ce, sans qu’on leur ait rien demandé. Cette distinction servirait une stratégie sans doute grossière visant à séparer au sein de l’espace public art de convenance et art subversif. Là où les uns essaieraient de rencontrer les goûts normés du citoyen moyen, les autres prendraient au contraire le risque de la désapprobation en déstabilisant les codes en vigueur et les normes esthétiques. Mais cette opposition entre art de convenance et art subversif constitue probablement un cliché grotesque. Aussi adoptera-t-on un point de vue plus fécond en montrant plutôt les contiguïtés entre l’art de commande et de l’art sauvage. Dans un cas comme dans l’autre, dès que les oeuvres d’art sont publiques, elles posent des problèmes spécifiques. Quels que soient les objectifs qui l’animent, dès qu’il franchit les murs de l’institution, du musée ou de la galerie, l’artiste prend un risque considérable. Et au fond, que sa proposition artistique soit autorisée ou illégale, d’un certain point de vue, le risque demeure. C’est ce qu’il s’agira ici d’identifier. [less ▲]

Detailed reference viewed: 51 (5 ULg)
Full Text
Peer Reviewed
See detailL'influence de la gouvernance familiale sur la transmission de la PME familiale au Sénégal : une modélisation contingente
Van Caillie, Didier ULg; Mbili Onana,

in COMREFAS - Consortium pour le Management de la Recherche Fondamentale en Afrique au Sud du Sahara (Ed.) Actes du 1er Congrès International en Sciences de Gestion du COMREFAS (2012, March)

In Senegal, family businesses are present in all industries and represent a significant force. Most of family entrepreneurs are between 40 and 50 years old, which show that they will soon face the ... [more ▼]

In Senegal, family businesses are present in all industries and represent a significant force. Most of family entrepreneurs are between 40 and 50 years old, which show that they will soon face the challenge of transmission. To face this challenge and thus to ensure their continuity, it is necessary to ensure the cohesion of family ties, particularly through the family governance. So, our contribution aims, in a contingent perspective and based on a large survey of the existing literature, to a better appraisal of family businesses in Senegal through a better understanding of their family governance practices first, and by understanding the role of family governance on their global performance in order to identify key success factors for a successful family transmission process in the context of Senegal. [less ▲]

Detailed reference viewed: 47 (7 ULg)
See detailLa primauté de l’intentionnalité et ses conséquences philosophiques
Boccaccini, Federico ULg

Conference (2012, March)

Detailed reference viewed: 10 (1 ULg)
See detailSpurious oscillations in generalized-alpha time integration methods
Arnold, Martin; Bruls, Olivier ULg; Cardona, Alberto

Conference (2012, March)

Detailed reference viewed: 21 (1 ULg)
See detailInstitutionalisation dynamics of Parliamentary Technology Assessment
Rosskamp, Benedikt ULg

Scientific conference (2012, March)

Detailed reference viewed: 22 (2 ULg)
Full Text
Peer Reviewed
See detailThe usefulness of Ion Mobility-Mass Spectrometry for Small Molecules Analysis
Far, Johann ULg; Goscinny, Séverine ULg; Joly, Laure et al

Conference (2012, March)

Detailed reference viewed: 87 (15 ULg)
Full Text
Peer Reviewed
See detailG protein-coupled receptors, an unexploited animal toxin targets: Exploration of green mamba venom for novel drug candidates active against adrenoceptors
Maïga, Arhamatoulaye; Mourier, Gilles; Quinton, Loïc ULg et al

in Toxicon (2012), 59

At a time when pharmaceutical companies are having trouble finding new low MW drugs and when biologics are becoming more common, animal venoms could constitute an underexploited source of novel drug ... [more ▼]

At a time when pharmaceutical companies are having trouble finding new low MW drugs and when biologics are becoming more common, animal venoms could constitute an underexploited source of novel drug candidates. We looked for identifying novel animal toxins active against G protein-coupled receptors (GPCR), the most frequently exploited class of treatment targets, with the aim to develop novel research tools and drug candidates. Screening of green mamba (Dendroaspis angusticeps) venom against adrenoceptors identified two novel venom peptides. r-Da1a shown an affinity of 0.35 nM for the a1a-AR while r-Da1b displayed affinities between 14 and 73 nM for the three a2-ARs. These two venom peptides have sequences similar to those of muscarinic toxins and belong to the three-finger-fold protein family. a1a-AR is the primary target for the treatment of prostate hypertrophy. In vitro and in vivo tests demonstrated that r-Da1a reduced prostatic muscle tone as efficiently as tamsulosin (an antagonist presently used), but with fewer cardiovascular side effects. a2-ARs are the prototype of GPCRs not currently used as treatment targets due to a lack of specific ligands. Blockage of these receptors increases intestinal motility, which may be compromised by abdominal surgery and reduces orthosteric hypotension. In vitro and in vivo tests demonstrated that r-Da1b antagonizes a2-ARs in smooth muscles and increased heart rate and blood catecholamine concentrations. These results highlight possible exploitation of r-Da1a and r-Da1b in important pathologies. [less ▲]

Detailed reference viewed: 11 (1 ULg)
Full Text
See detailFair Trade Organizations and Social Enterprise. Social Innovation through Hybrid Organization Models
Huybrechts, Benjamin ULg

Book published by Routledge (2012)

For several decades, Fair Trade Social Enterprises (FTSEs) have set up partnerships with producer groups in the South and distributed the latter’s products through different types of channels in the North ... [more ▼]

For several decades, Fair Trade Social Enterprises (FTSEs) have set up partnerships with producer groups in the South and distributed the latter’s products through different types of channels in the North. However, while pioneers in the early years were relatively homogeneous (nonprofit organizations relying on voluntary work and selling through “worldshops”), organizational diversity has tremendously increased in recent times, including other types of legal forms, architectures, and governance models (volunteer-based, manager-based, multi-stakeholder, etc.). As a result, different categories of FTSEs now coexist in the sector with diverse missions and strategies. Since Fair Trade (FT) is a hybrid concept, entailing economic, social and political dimensions, the diversity of organizational models might reflect or enable different ways of articulating these dimensions. In other words, different organizational models might be suited for different ways of conceiving and practicing FT. Such an articulation through specific forms has been suggested by previous concepts that can be related to FT, such as cooperatives, the social economy, the solidarity economy, and, more recently, social enterprise. The latter is particularly useful as an umbrella concept that embraces the diverse types of FTSEs and accounts for their use of market mechanisms to pursue social innovation. This research first aims to explore and to structure FTSEs’ organizational diversity. For that purpose, the managers of 57 FTSEs were interviewed in four European regions: Belgium, France (Rhône-Alpes), the United Kingdom (England) and Italy (Rome). Based on the combinations of different elements of the organizational form, five categories emerge: individual FTSEs; entrepreneurial, business-form FTSEs; volunteer-based FTSEs; multi-stakeholder cooperative FTSEs; and group structures. Although certain FTSEs share features corresponding to several models, these categories seem adequate in the sense are relatively homogeneous and distinct from each other. The second question examines the factors or forces that lead FTSEs to adopt particular and diverse organizational forms. Using sociological and economic “new institutional” approaches, this book explores the influence of a number of factors on the organizational form: age, size, region, goals, activities, resources, and leaders’ profiles. From an economic standpoint, organizational diversity may be explained by the fact that FTSEs do not all produce the same types of goods when practicing FT. Thus, FTSEs will adopt the organizational form that minimizes their transaction costs in the production of particular goods. From a sociological standpoint, the analysis suggests that weak and sometimes conflicting institutional pressures explain organizational diversity. Indeed, uniformity is limited (within certain generations of FTSEs or in particular regions), although there is a dominant trend toward a stronger business orientation in the models. The third question examines how organizational actors within FTSEs experience and foster hybridity at the field level, thereby contributing to organizational diversification. Looking at six cases of FTSEs covering the different types of models, the strategic role of FTSEs is examined, as “institutional entrepreneurs” capable of influencing the environment in a way that legitimizes their own organizational model and secures their access to crucial resources. This strategic analysis allows for a more dynamic view of organizational models as “institutional bricolage”. Finally, the book ends with a number of recommendations for FT entrepreneurs on the strengths and the weaknesses of each organizational model. [less ▲]

Detailed reference viewed: 231 (10 ULg)
See detailDu laisser-faire au pilotage stratégique ?
Croché, Sarah; Fallon, Catherine ULg

Article for general public (2012)

Présentée comme un instrument clé de la compétitivité régionale depuis la fi n des années nonante, la recherche est l’objet de nombreuses initiatives politiques nationales et européennes. Notamment ... [more ▼]

Présentée comme un instrument clé de la compétitivité régionale depuis la fi n des années nonante, la recherche est l’objet de nombreuses initiatives politiques nationales et européennes. Notamment produite au sein des universités, elle est censée contribuer à la compétitivité de l’Europe sur la scène mondiale et libérer le potentiel d’innovation européen. La note Marcourt propose un renouveau partiel des formes de gouvernance des politiques de recherche en Communauté française qui s’inscrit dans les réformes préconisées par les autorités européennes pour créer l’espace européen de la recherche avec le risque d’un découplage entre recherche et enseignement. Sans compter que ce projet ne dit rien sur le partage des ressources entre équipes universitaires. [less ▲]

Detailed reference viewed: 27 (4 ULg)
Full Text
Peer Reviewed
See detailA Hybrid IP Lookup Architecture with Fast Updates
Luo, Layong; Xie, Gaogang; Xie, Yingke et al

in Annual International Conference on Computer Communications (2012, March)

As network link rates are being pushed beyond 40 Gbps, IP lookup in high-speed routers is moving to hardware. The TCAM (Ternary Content Addressable Memory)-based IP lookup engine and the SRAM (Static ... [more ▼]

As network link rates are being pushed beyond 40 Gbps, IP lookup in high-speed routers is moving to hardware. The TCAM (Ternary Content Addressable Memory)-based IP lookup engine and the SRAM (Static Random Access Memory)- based IP lookup pipeline are the two most common ways to achieve high throughput. However, route updates in both engines degrade lookup performance and may lead to packet drops. Moreover, there is a growing interest in virtual IP routers where more frequent updates happen. Finding solutions that achieve both fast lookup and low update overhead becomes critical. In this paper, we propose a hybrid IP lookup architecture to address this challenge. The architecture is based on an efficient trie partitioning scheme that divides the Forwarding Information Base (FIB) into two prefix sets: a large disjoint leaf prefix set mapped into an external TCAM-based lookup engine and a small overlapping prefix set mapped into an on-chip SRAM-based lookup pipeline. Critical optimizations are developed on both IP lookup engines to reduce the update overhead. We show how to extend the proposed hybrid architecture to support virtual routers. Our implementation shows a throughput of 250 million lookups per second (MLPS). The update overhead is significantly lower than that of previous work and the utilization ratio of most external TCAMs is up to 100%. [less ▲]

Detailed reference viewed: 74 (13 ULg)
Full Text
See detailNew Hypotheses on serial offender's spatial behaviour
Trotta, Marie ULg

in Pundt, Hardy; Bernard, Lars (Eds.) Proceedings 1st AGILE PhD School (2012, March)

Geographic profiling is a methodology used to delineate a prior search area for a serial offender. Two new hypotheses integrating recent researches on offender’s behaviour are proposed to broaden the ... [more ▼]

Geographic profiling is a methodology used to delineate a prior search area for a serial offender. Two new hypotheses integrating recent researches on offender’s behaviour are proposed to broaden the applicability of the techniques of geographic profiling to commuters and irregular patterns of crimes. The journeysto- crime variance and place attractiveness will be successively integrated in GP methods. In order to evaluate the variance of the journeys-to-crime on real road network, a method based on least square adjustment in raster mode is developed. A real case of serial rapes illustrates the effectiveness of those assumptions for a non-uniform pattern of crimes. [less ▲]

Detailed reference viewed: 75 (18 ULg)