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See detailAsymptotic expansion of slightly coupled modal dynamic transfer functions
Denoël, Vincent ULg; Degée, Hervé ULg

in Journal of Sound & Vibration (2009), 328

In case of non-diagonal modal damping, normal modes of vibration do not decouple modal equations. The usual way to handle such a non-diagonal modal damping matrix is to neglect its off-diagonal elements ... [more ▼]

In case of non-diagonal modal damping, normal modes of vibration do not decouple modal equations. The usual way to handle such a non-diagonal modal damping matrix is to neglect its off-diagonal elements. In this paper, we propose an approximatemethod based on an asymptotic expansion of the transfer function. It is intermediate between the classical decoupling approximation and the formal solution requiring a full matrix inversion. Indeed, on the one hand, it allows to partially account for modal coupling and, on the other hand, still allows the modal equations to be solved independently from each other. We first provide the mathematical background necessary to canvass the proposed method, then consider a benchmark against which the benefits of the method are measured. [less ▲]

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See detailRisk factors for major joints heterotopic ossification after thermal injury
REMY, Christophe ULg; COLMAN, David ULg; LEDOUX, Didier ULg et al

in Burns : Journal of the International Society for Burn Injuries (2009)

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See detailDu Résume Infirmier Minimum aux Données Infirmières du Résumé Hospitalier Minimal … évolution ou révolution ?
THONON, Olivier ULg; MANNA, Mirella

in GILSON, Patrick; SUIJKERBUIJK, Hans (Eds.) Mémento de l'art infirmier 2009/2010 (2009)

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See detailRecension "Etat du secteur immobilier dans l'Union Européenne", par F. Seutin
Kohl, Benoît ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2009)

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See detailCrucial role of reversible phosphorylation in the mechanisms governing the biological functions of class IIa Histone Deacetylases
Martin, Maud ULg

Doctoral thesis (2009)

Regulation of class IIa histone deacetylases (HDACs) phosphorylation is crucial because it provides the opportunity to control important developmental processes associated with these key enzymes. Indeed ... [more ▼]

Regulation of class IIa histone deacetylases (HDACs) phosphorylation is crucial because it provides the opportunity to control important developmental processes associated with these key enzymes. Indeed, the transcriptional repressor activity of class IIa HDAC is controlled via their phosphorylation-dependent nucleo-cytoplasmic shuttling. While a lot of efforts have been directed towards the identification of the inactivating kinases that phosphorylate class IIa HDACs, the identity of the antagonist phosphatase remained an open question. During this work, we found that protein phosphatase 2A (PP2A) is responsible for dephosphorylating the class IIa HDACs member HDAC7, thereby regulating its subcellular localization and repressor activity. In order to validate our model, functional consequences of these findings was illustrated during the two main biological processes involving HDAC7, i.e. T-cells apoptosis during negative selection and endothelial cells angiogenic activities during vascular network formation. Cellular PP2A represents a large population of trimeric holoenzymes containing a variable regulatory subunit, whose identity has a crucial role in determining the specificity of PP2A catalytic activity. In an effort to characterize the regulation of HDAC7 dephopshorylation, we identified the relevant PP2A holoenzyme regulating HDAC7 function during vasculogenesis and we found that, among diverse regulatory subunit isoforms, PP2A-Bα uniquely regulates endothelial cell angiogenic properties. PP2A-Bα silencing using small interfering RNAs results in a significant inhibition of endothelial cell tube formation and migration. These results establish PP2A, and more precisely the Bα containg PP2A holoenzyme, as an essential element in the regulation of the class IIa HDACs HDAC7 and unravel a first developmental function for the PP2A regulatory subunit Bα in the genesis of blood vessels. [less ▲]

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See detailIND-6, a Highly Divergent IND-type Metallo-{beta}-lactamase from Chryseobacterium indologenes strain 597 isolated in Burkina Faso.
Zeba, Boularé; De Luca, Filomena; Dubus, Alain et al

in Antimicrobial Agents and Chemotherapy (2009)

Chryseobacterium and other genera belonging to the family Flavobacteriaceae include organisms that can behave as human pathogens and are known to cause different kinds of infections. Several ... [more ▼]

Chryseobacterium and other genera belonging to the family Flavobacteriaceae include organisms that can behave as human pathogens and are known to cause different kinds of infections. Several Flavobacteriaceae, including Chryseobacterium indologenes, are naturally resistant to beta-lactam antibiotics (including carbapenems), due to the production of a resident metallo-beta-lactamase. Although C. indologenes presently constitutes a limited clinical threat, the incidence of infections caused by this organism is increasing in some settings, where isolates that exhibit multidrug resistance phenotypes (that include aminoglycosides and quinolones) have been described. Here we report the identification and characterization of a new IND-type variant from a C. indologenes isolate from Burkina Faso resistant to beta-lactams and aminoglycosides. Its sequence identity with other IND-type metallo-beta-lactamases ranges from 72 to 90% (with IND-4 and IND-5, respectively). The purified enzyme exhibited N-terminal heterogeneity and a post-translational modification, consisting in the presence of a pyroglutamate residue at the N-terminus. IND-6 shows a broad substrate profile, with overall higher turnover rates than IND-5 and higher activities than IND-2 and IND-5 against ceftazidime and cefepime. [less ▲]

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See detailLa critique de la psychologie de Natorp dans la cinquième Recherche logique de Husserl
Seron, Denis ULg

in Philosophiques (2009), 36(2), 533-558

The aim of this essay is to identify and to analyze some key aspects of Husserl’s critique of Natorp’s psychology in the fifth Logical Investigation. After dividing Husserl’s argumentation into four main ... [more ▼]

The aim of this essay is to identify and to analyze some key aspects of Husserl’s critique of Natorp’s psychology in the fifth Logical Investigation. After dividing Husserl’s argumentation into four main objections, we show that what is at stake in all of them is the idea of an empirical psychology in Brentano’s style. From that perspective we comment two of the most significant questions raised by the Husserl-Natorp debate: the nature of the difference between psychical and physical, the possibility of objectifying phenomenal contents. We then attempt to clarify in what sense Husserl’s and Natorp’s answers to these two questions are diametrically opposed. We conclude by some remarks on the intrinsic weaknesses of Natorp’s approach. [less ▲]

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See detailPerformances zootechniques de la poule Ardennaise, une race ancienne pour le futur ?
Moula, Nassim ULg; Antoine-Moussiaux, Nicolas ULg; Farnir, Frédéric ULg et al

in Annales de Médecine Vétérinaire (2009), 153(1), 66-75

Nowadays, Belgian poultry breeding is characterized by a strong biodiversity that is nevertheless greatly endangered. The present work aims at evaluating the zootechnical potential of an ancient poultry ... [more ▼]

Nowadays, Belgian poultry breeding is characterized by a strong biodiversity that is nevertheless greatly endangered. The present work aims at evaluating the zootechnical potential of an ancient poultry breed originating from the Franco-Belgian Ardennes region, the Ardennaise. This breed shows an important phenotypic variation, with 10 different varieties being recognized. This study evaluates the Ardennaise production performances and is divided into three parts: (1) the analysis of the growth and the consumption indices over a twelve weeks period, (2) the comparison of the growth over seventeen weeks in four varieties, (3) the study of eggs number and eggs weight over 70 weeks laying. The results indicate that the Ardennaise breed constitutes a good dual purpose breed that could be interestingly submitted to selection. Its use in industrial crosses for egg composition amelioration is also proposed. Lastly, this works shows the importance of extending the here developed evaluation protocol to other Belgian endangered poultry breeds to motivate the necessary conservation programs. [less ▲]

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See detailMobility, turnover and storage of pollutants in soils, sediments and waters: achievements and results of the EU project AquaTerra. A review
Barth, J. A. C.; Grathwohl, P.; Fowler, H. J. et al

in Agronomy for Sustainable Development (2009), 29(1), 161-173

AquaTerra is one of the first environmental projects within the 6th Framework program by the European Commission. It began in June 2004 with a multidisciplinary team of 45 partner organizations from 13 EU ... [more ▼]

AquaTerra is one of the first environmental projects within the 6th Framework program by the European Commission. It began in June 2004 with a multidisciplinary team of 45 partner organizations from 13 EU countries, Switzerland, Serbia, Romania and Montenegro. Results from sampling and modeling in 4 large river basins (Ebro, Danube, Elbe and Meuse) and one catchment of the Brévilles Spring in France led to new evaluations of diffuse and hotspot input of persistent organic and metal pollutants including dynamics of pesticides and polycyclic aromatic hydrocarbons, as well as metal turnover and accumulation. While degradation of selected organic compounds could be demonstrated under controlled conditions in the laboratory, turnover of most persistent pollutants in the field seems to range from decades to centuries. First investigations of long-term cumulative and degradation effects, particularly in the context of climate change, have shown that it is also necessary to consider the predictions of more than one climate model when trying to assess future impacts. This is largely controlled by uncertainties in climate model responses. It is becoming evident, however, that changes to the climate will have important impacts on the diffusion and degradation of pollutants in space and time that are just at the start of their exploration. [less ▲]

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See detailFrontal-view gait recognition by intra- and inter-frame rectangle size distribution
Barnich, Olivier ULg; Van Droogenbroeck, Marc ULg

in Pattern Recognition Letters (2009), 30

Current trends seem to accredit gait as a sensible biometric feature for human identification, at least in a multimodal system. In addition to being a robust feature, gait is hard to fake and requires no ... [more ▼]

Current trends seem to accredit gait as a sensible biometric feature for human identification, at least in a multimodal system. In addition to being a robust feature, gait is hard to fake and requires no cooperation from the user. As in many video systems, the recognition confidence relies on the angle of view of the camera and on the illumination conditions, inducing a sensitivity to operational conditions that one may wish to lower. In this paper we present an efficient approach capable of recognizing people in frontal-view video sequences. The approach uses an intra-frame description of silhouettes which consists of a set of rectangles that will fit into any closed silhouette. A dynamic, inter-frame, dimension is then added by aggregating the size distributions of these rectangles over multiple successive frames. For each new frame, the inter-frame gait signature is updated and used to estimate the identity of the person detected in the scene. Finally, in order to smooth the decision on the identity, a majority vote is applied to previous results. In the final part of this article, we provide experimental results and discuss the accuracy of the classification for our own database of 21 known persons, and for a public database of 25 persons. [less ▲]

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See detailThe January 2002 eruption of Nyiragongo volcano (DRC) captured by InSAR
Wauthier, Christelle ULg; Cayol, V.; Kervyn, F. et al

in Proc. of Geoscience and Remote Sensing Symposium, 2009 IEEE International, IGARSS 2009 , July 13-17 2009, Cape Town, Africa (2009)

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See detailImpact des infrastructures de transport sur les paysages ordinaires : application au cas de l’espace périurbain liégeois en Belgique
Teller, Jacques ULg; Cremasco, Véronica ULg

in Kerbachi, R.; Joumard, R.; Boughedaoui, M. (Eds.) et al Environnement et Transports dans des contextes différents (2009)

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See detailL’Ardennaise: statut de la race et de ses variétés.
Moula, Nassim ULg; Antoine-Moussiaux, Nicolas ULg; Farnir, Frédéric ULg et al

in Annales de Médecine Vétérinaire (2009), 153

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See detailLa coopération roumaine au développement : exercice d'approche goffmannienne
Teclu, Codrat Alin ULg

Master's dissertation (2009)

L’objectif du présent mémoire est de comprendre comment un pays, en l’occurrence la Roumanie, passe du statut d’aidé à celui d’aidant. Le 1er janvier 2007, celle-ci intègre en effet l’Union Européenne ... [more ▼]

L’objectif du présent mémoire est de comprendre comment un pays, en l’occurrence la Roumanie, passe du statut d’aidé à celui d’aidant. Le 1er janvier 2007, celle-ci intègre en effet l’Union Européenne. Faisant partie de l’acquis communautaire, la coopération au développement commence dès lors officiellement pour la Roumanie en tant que nouveau membre. Le pays se voit ainsi confronté à un nouvel horizon : soutenir la réalisation des Objectifs du Millénaire pour le Développement (OMD) dans le « Sud ». Mais lorsque l’on sait qu’elle a eu, elle aussi, son propre rapport des OMD pour 2008, on prend conscience que ce chantier constitue un vrai défi. Devant cette situation nouvelle, nous avons mobilisé l’un des concepts clés du sociologue Erving Goffman – le faceworking – afin de rendre compte le plus finement possible du processus d’acquisition des rôles dorénavant dévolus aux différents acteurs nationaux impliqués dans l’aide roumaine. Nous démontrons que si les protagonistes tentent de réaliser leurs intérêts, ils ne peuvent le faire qu’en maintenant chacun une "face" vis-à-vis des autres. Les rencontres entre deux institutions sont dès lors encadrées par une dynamique propre à l’interaction. Une dynamique qui a peut-être été sous-estimée par la littérature sociologique et anthropologique en développement : si les rôles et le statut des institutions ont été abondamment analysés, la manière dont naît un nouveau rôle/statut est fréquemment traitée comme une « boîte noire ». Or, cette situation est exactement celle que vit aujourd’hui la Roumanie sur la scène internationale. Prenant à rebours ce changement macro social, l’hypothèse du mémoire est que les interactions à première vue les plus anodines peuvent être au fondement de changements de plus grande échelle. [less ▲]

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See detailLes clauses take or pay: des clauses originales et méconnues
Kohl, Benoît ULg; Vanwijck, Michèle ULg; Salzburger, Romain ULg

in Journal des Tribunaux (2009)

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See detailLe promoteur
Kohl, Benoît ULg

in Guide de droit immobilier (2009)

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See detailRecension "Liber Amicorum Jean-Luc Fagnart"
Kohl, Benoît ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2009)

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