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See detailThe Enigma of B-type Pulsators in the SMC
Salmon, Sébastien ULg; Montalban Iglesias, Josefa ULg; Miglio, Andrea ULg et al

in AIP Conference Proceedings (2009, September 01), 1170

Since the early nineties it is accepted that the excitation mechanism of B-type pulsators on the main sequence is due to the opacity peak in the iron-group elements at T~200,000 K. The Fe content plays ... [more ▼]

Since the early nineties it is accepted that the excitation mechanism of B-type pulsators on the main sequence is due to the opacity peak in the iron-group elements at T~200,000 K. The Fe content plays then a major role in the excitation of β Cep and SPB pulsations. While theoretical non-adiabatic computations predict no β Cep pulsators and only a small number of SPBs for low metallicity environments such as that of the Magellanic Clouds (MCs), recent variability surveys of B stars in the SMC have reported the detection of a significant number of SPB and β Cep candidates. Since the SMC is the metal poorest (Z~0001-0.004) of the MCs, it constitutes an interesting object for investigating the disagreement between theory and observations. We approach the problem by calling into question some of the hypotheses made in previous studies: given the different chemical evolution of the SMC compared with our local galactic environment, is it appropriate to describe the chemical composition of SMC B stars by scaling the solar mixture to lower Z? Is that composition uniform in space and time? In this paper we present the results of a stability analysis of B-type stellar models computed with a revised chemical composition and metallicity specific to the SMC. [less ▲]

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See detailLe chant comme support à l’acquisition du langage : Effets de l’expertise musicale ou linguistique
Larrouy, Pauline ULg

Master's dissertation (2009)

Le chant, omniprésent dans notre vie, constitue également un matériel écologique et multidimensionnel qui allie les dimensions musicale et linguistique. Il offre ainsi un outil privilégié pour observer ... [more ▼]

Le chant, omniprésent dans notre vie, constitue également un matériel écologique et multidimensionnel qui allie les dimensions musicale et linguistique. Il offre ainsi un outil privilégié pour observer les relations entre la musique et le langage. Afin d’examiner la spécificité du traitement des informations langagières et musicales dans le chant, nous avons étudié l’influence de l’expertise musicale ou langagière sur l’utilisation des probabilités transitionnelles, un type d’apprentissage statistique implicite particulièrement important dans le développement langagier. Dans le but d’étudier l’intervention de modulations fréquentielles dans l’utilisation des propriétés statistiques des syllabes, Schön, Boyer, Moreno, Besson, Peretz et Kolinsky (2008) avaient mis au point une méthode astucieuse et ont ouvert la voie à l’expérimentation du bénéfice du chant dans l’acquisition du langage. Grâce à leur matériel et à la conception d’une expérience exploratoire, nous avons comparé les performances de sujets non-experts, experts en musique et experts en langage dans l’utilisation des probabilités transitionnelles d’un matériel linguistique et musical. Schön et al (2008) avaient mis en évidence le bénéfice des propriétés structurales et motivationnelles de la musique contenues dans le chant. Nos résultats ne répliquent pas cette étude chez des non-experts mais une interaction significative apparaît entre les expériences proposées et le type d’expertise. Les experts en musique semblent bénéficier des informations musicales et linguistiques pour l’apprentissage statistique lorsqu’elles sont présentées de manière congruente. Par ailleurs, une incongruité entre l’information linguistique et musicale aiderait les experts en langage à utiliser des probabilités transitionnelles de la parole. Les différentes analyses ont guidé notre réflexion sur la spécificité du traitement des paroles et de la mélodie contenues dans le chant. La discussion relative aux effets observés permet d’envisager de futures recherches dans ce domaine et l’exploration de la musicalité de la parole dans une perspective de clinique logopédique. [less ▲]

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See detailExpression of aryl hydrocarbon receptor (AHR) and AHR-interacting protein in pituitary adenomas: pathological and clinical implications.
Jaffrain-Rea, M. L.; Angelini, M.; Gargano, D. et al

in Endocrine-Related Cancer (2009), 16(3), 1029-1043

Germline mutations of the aryl hydrocarbon receptor (AHR)-interacting protein (AIP) gene confer a predisposition to pituitary adenomas (PA), usually in the setting of familial isolated PA. To provide ... [more ▼]

Germline mutations of the aryl hydrocarbon receptor (AHR)-interacting protein (AIP) gene confer a predisposition to pituitary adenomas (PA), usually in the setting of familial isolated PA. To provide further insights into the possible role of AIP in pituitary tumour pathogenesis, the expression of AIP and AHR was determined by real-time RT-PCR and/or immunohistochemistry (IHC) in a large series of PA (n=103), including 17 with AIP mutations (AIP(mut)). Variable levels of AIP and AHR transcripts were detected in all PA, with a low AHR expression (P<0.0001 versus AIP). Cytoplasmic AIP and AHR were detected by IHC in 84.0 and 38.6% of PA respectively, and significantly correlated with each other (P=0.006). Nuclear AHR was detected in a minority of PA (19.7%). The highest AIP expression was observed in somatotrophinomas and non-secreting (NS) PA, and multivariate analysis in somatotrophinomas showed a significantly lower AIP immunostaining in invasive versus non-invasive cases (P=0.019). AIP expression was commonly low in other secreting PA. AIP immunostaining was abolished in a minority of AIP(mut) PA, with a frequent loss of cytoplasmic AHR and no evidence of nuclear AHR. In contrast, AIP overexpression in a subset of NS PA could be accompanied by nuclear AHR immunopositivity. We conclude that down-regulation of AIP and AHR may be involved in the aggressiveness of somatotrophinomas. Overall, IHC is a poorly sensitive tool for the screening of AIP mutations. Data obtained on AHR expression suggest that AHR signalling may be differentially affected according to PA phenotype. [less ▲]

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See detailStudy of polymorphisms in tir and eae genes of enterohemorrhagic and enteropathogenic Escherichia coli of serogroup O26
Bardiau, Marjorie ULg; Labrozzo, Sabrina; Mainil, Jacques

Poster (2009, September)

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See detailL ’architecte Paul Jaspar (1859-1945) : patrimoine et modernité Liège. Une exposition au Grand Curtius de Liège
Charlier, Sébastien ULg; Merland, Monique

in Cahiers de l'Urbanisme (Les) (2009), 73

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See detailEcologie chimique d’Eisenia fetida et son implication dans le lombricompostage
Zirbes, Lara ULg

Conference given outside the academic context (2009)

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See detailHeureux qui…
Frankignoulle, Pierre ULg

in Musée de la Photographie à Charleroi (2009)

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See detailThe self-schema stability in schizophrenia
Boulanger, Marie ULg; Dethier, Marie ULg; Jacob, Nathalie et al

Poster (2009, September)

Objective: The present study investigated the stability of the self-schema in patients with schizophrenia. Method: Twenty five patients with schizophrenia were compared to twenty healthy subjects. The ... [more ▼]

Objective: The present study investigated the stability of the self-schema in patients with schizophrenia. Method: Twenty five patients with schizophrenia were compared to twenty healthy subjects. The participants completed a questionnaire to describe themselves (a short version of Label from Gendre, 2008) at time 1 and one month later (time 2). Two parallel versions of the questionnaire were employed. Each version contained fifty adjectives which corresponded to personality traits. A comparison between the two versions allowed to investigate the stability of the self-schema. A stability score was computed. Further, participants’ neuropsychological functioning as well as the severity of the symptomatology was measured. Results: Schizophrenia patients displayed a lower score of stability (m = 0,61 ; sd= 0,33) compared to healthy subjects (m = 0,84 ; sd = 0,13) (t(43) = 2.94 ; p = .005). The BDI score was correlated to stability score (r(45) = -.44 ; p = .002). Conclusion: In schizophrenia patients the representation of the self is changing over time. This result is in line with a previous one (Nienszanski, 2003). However, to ours knowledges, the present study is the first to objectively measure this changing. [less ▲]

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See detailAutobiographical memory and problem solving in bipolar disorder
Boulanger, Marie ULg; Lejeune, Aurélie; Blairy, Sylvie ULg

Poster (2009, September)

Objective: The aim of the present study was to investigate the abilities to remember specific past personal events as well as the abilities to generate specific future events in patients with bipolar ... [more ▼]

Objective: The aim of the present study was to investigate the abilities to remember specific past personal events as well as the abilities to generate specific future events in patients with bipolar disorders (BD). Moreover, the study investigated whether the abilities to generate specific events is related to the abilities to solve interpersonal problems which was measured using the Optional Thinking Test (OTT) (Platt & Spivack, 1977). Method: Nineteen patients with bipolar disorders and 17 healthy subjects completed validated French versions (Neumann & Philippot, 2006) of the AMT Williams & Broadbent (1986). Participants were instructed to generate specific past and future memories in response to cues words. For the OTT, they were asked to yield the most solutions as possible to daily problems. Results: For the past events task, the analysis revealed a significant group by memory interaction (F(2,68) = 4.0 ; p=.023) which indicates that the patients with BD recollected less specific events and more overgeneral events than controls. For the future events task, a significant group by memory interaction emerged (F(2,68) = 7.85 ; p<.001) which indicates that the patients with BD were less specific and yielded more overgeneral memories than the control group. Further, the numbers of specific past and future events were correlated to the numbers of solutions to interpersonal problems (r(36) = .57 ; p<.001, r(36) = .43 ; p=.009, respectively). Conclusion: the results are consistent with previous studies that have examined autobiographical memory (AM) specificity in patients with BD (Scott et al., 2000; Mansell & Lam, 2004). These results support the notion of impairments in imagining specific past and future events BD patients. The difficulty in imagining the future may contribute to relapse. Thus, AM remediation program could be an additional useful tool to develop in CBT for bipolar patients. [less ▲]

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See detailThe guidelines on the application of article 81(3) EC: A critical review
Petit, Nicolas ULg

E-print/Working paper (2009)

To date, the European Commission has not yet made use of the novel guidance instruments established under Regulation 1/2003 (Article 10 inapplicability decisions, guidance letters, etc.), or taken any ... [more ▼]

To date, the European Commission has not yet made use of the novel guidance instruments established under Regulation 1/2003 (Article 10 inapplicability decisions, guidance letters, etc.), or taken any exemption decision pursuant to Article 81(3). The "brave new world" of Regulation 1/2003 is thus a competition enforcement system devoid of individual guidance and positive decisions. That is not to say, however, that firms have been left without formal guidance. In early 2004, the Commission issued Guidelines on Article 81(3), which set out the methodological and substantive framework for the self-assessment of agreements under Article 81(3). The present paper paper offers a critical review of those Guidelines and explains why, in practice, firms and their counsels have repeatedly argued that this text is unpractical and thus of little use. [less ▲]

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See detailEnjeu climatique : Quel coût pour l’inaction ?
Ozer, Pierre ULg

in Politique : Revue de Débats (2009), Hors-série 12

Sans cesse, nous sommes assommés par une kyrielle de messages publicitaires qui passent la rampe sans le moindre problème et prônent un certain mode de société. Un supermarché exhorte « Vivez comme vous ... [more ▼]

Sans cesse, nous sommes assommés par une kyrielle de messages publicitaires qui passent la rampe sans le moindre problème et prônent un certain mode de société. Un supermarché exhorte « Vivez comme vous voulez », l’autre clame « Et tout devient possible ». En effet, dans ce dernier, même ce qui pourrait paraître impossible est possible… [less ▲]

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See detailDoes Social Innovation vary with the Organisational Form? Exploring the Diversity of Fair Trade Social Enterprises in Europe
Huybrechts, Benjamin ULg

Conference (2009, September)

A common view in the literature on social entrepreneurship and social enterprise is to highlight the fact that social innovation crosses the organizational forms. But does that social innovation should be ... [more ▼]

A common view in the literature on social entrepreneurship and social enterprise is to highlight the fact that social innovation crosses the organizational forms. But does that social innovation should be considered regardless of the organizational form? Fair Trade (FT) offers a quite interesting example of both a social innovation and a field in which diverse organizational forms coexist. My research questions are twofold: (1) what are the different types of organizational forms that underlie social innovation in the FT sector?; (2) do these different forms bring different types of social innovation? The methodology consists of interviews with the leaders of 57 Fair Trade Social Enterprises (FTSEs) in four European regions: Belgium, France (Rhône-Alpes), United Kingdom (England) and Italy (Rome). The findings show that the legal forms and governance models–the two elements of the organizational form considered here–can be combined into five categories of organizational forms: individual, manager-owned business, volunteer-based, multi-stakeholder cooperative and group. These categories seem to be linked, at least to a certain extent, to the age of the FTSE and to its goals. Certain forms seem to signal a particular type of social innovation. Volunteer-based FTSEs use education and advocacy as the main channel to pursue social change at the global level, and see the partnerships with the producers in the South as a vehicle to support the former goal. Individual and business-form FTSEs focus on offering benefits to the producers through a profitable commercial activity. And multi-stakeholder cooperatives and groups generally seek to combine both types of social innovation. However, nuances exist and lead to considering the organisational form as vehicles that may serve various purposes according to the context and the entrepreneurs’ profiles. I suggest three theoretical frameworks to interpret the diversity of organizational forms and its link with the logics of social innovation. Neo-institutional economics allow to see organizational diversity as the result of the production of different types of goods within the “FT bundle”. New institutionalism in organizational analysis emphasizes organizational diversity as the result of either weak (or non-existent) or multiple institutional logics. And institutional entrepreneurship highlights the ability of FTSEs to shape the environment in a way that legitimizes their own way of conceiving social innovation. I conclude that these three frameworks offer complementary explanations to organizational diversity and that the latter is an asset rather than an obstacle for carrying social innovation in multiple and complementary ways. [less ▲]

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See detailInternational report on Competition Authorities Discretion
Petit, Nicolas ULg

Scientific conference (2009, September)

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See detailCatalogue de l'exposition Paul Jaspar architecte (1859-1945) : patrimoine et modernité
Charlier, Sébastien ULg; Merland, Monique; Carpeaux, Carole

Book published by Commission royale des Monuments, Sites et Fouilles (2009)

En 2009, à l’occasion du 150e anniversaire de la naissance de l’architecte liégeois Paul Jaspar, la Commission royale des Monuments, Sites et Fouilles, en collaboration avec la Ville de Liège et l’a.s.b.l ... [more ▼]

En 2009, à l’occasion du 150e anniversaire de la naissance de l’architecte liégeois Paul Jaspar, la Commission royale des Monuments, Sites et Fouilles, en collaboration avec la Ville de Liège et l’a.s.b.l. Les Musées de Liège, a souhaité rendre hommage au chef de file de l’architecture moderne liégeoise à la fin du XIXe et au début du XXe siècle, par le biais de l’exposition Paul Jaspar architecte (1859-1945) : patrimoine et modernité, présentée au Grand Curtius à Liège, du 5 septembre au 25 octobre 2009. Ce projet eu l’ambition d’évoquer non seulement l’architecte, mais également l’homme, l’artiste et l’archéologue. Ses réalisations les plus marquantes y étaient présentées au travers de nombreux dessins, croquis et plans d’architecture, conservés au Centre d’Archives et de Documentation de la C.R.M.S.F. ; ils illustraient quelque quarante-cinq projets ou constructions exécutées entre 1884 et 1932. De nombreuses photographies anciennes et les écrits de Paul Jaspar permettaient de cerner ses passions et son érudition. Nombre de courriers et rapports conservés dans les archives de la C.R.M.S.F. attestaient de son engagement envers le patrimoine et de la sûreté de son jugement de membre correspondant. Le contexte historique et artistique de l’époque apparaissait, quant à lui, en filigrane grâce à la présentation d’œuvres issues de collections privées et publiques. [less ▲]

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See detailAutomated Phase Map Referencing Against Historic Map Data
Groves, Roger; De Rauw, Dominique ULg; Thizy, Cédric ULg et al

in Osten, W.; Kujawinska, M. (Eds.) Fringe 2009 (2009, September)

Holography and shearography techniques are in common use for precise measurements in high technology industries, such as aerospace, automotive, precision manufacturing and for the structural diagnostics ... [more ▼]

Holography and shearography techniques are in common use for precise measurements in high technology industries, such as aerospace, automotive, precision manufacturing and for the structural diagnostics of artwork. The phase map data generated by these instruments allows precise measurements of parameters such as displacement, strain and shape. The comparison of data from different measurement campaigns is useful for null testing components and for studying changes. However, the comparison of data with previous measurements is non-trivial due to the sensitivity of these techniques to alignment and to sample loading parameters. This paper addresses image and phase registration issues for holography and shearography. This manuscript describes 2D spatial co-registration to compensate for differences between the field of view between the measurements and a phase referencing to calculate the difference between the phase maps. These techniques are implemented after following a standardised measurement procedure. [less ▲]

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See detailAmbivalence de l’éthylisme : représentations des figures d’auteurs alcoolisés dans la nouvelle bande dessinée francophone
Dozo, Björn-Olav ULg

in COnTEXTES : Revue de Sociologie de la Littérature (2009)

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See detailLa mesure des émissions gazeuses, et plus particulièrement des odeurs, comme outil de caractérisation de matériaux et de processus
Nicolas, Jacques ULg; Romain, Anne-Claude ULg; Degrave, Christophe et al

Conference (2009, September)

La qualité d'un matériau de construction, outre ses caractéristiques physiques, est fonction de son impact sur l'environnement intérieur. Ceci pousse de plus en plus les fabricants à proposer sur le ... [more ▼]

La qualité d'un matériau de construction, outre ses caractéristiques physiques, est fonction de son impact sur l'environnement intérieur. Ceci pousse de plus en plus les fabricants à proposer sur le marché des matériaux (dont les "bio-matériaux") dont les émissions atmosphériques demeurent dans des limites acceptables. Plusieurs initiatives, essentiellement volontaires, existent au niveau européen pour évaluer ces émissions. Un des objectifs de la directive européenne des produits de construction (CPD) est d'harmoniser les méthodes d'évaluation. La comparaison de 4 chambres d'émission, de tailles différentes, l'usage de méthodes d'évaluation physico-chimiques couplées à des méthodes sensitives de mesure des odeurs et l'utilisation de la technique des nez électroniques constituent l'originalité de la démarche du projet mené par l'université de Liège en collaboration avec deux autres institutions belges. Plus généralement, le nez électronique représente un outil particulièrement bien adapté au suivi d'ambiances gazeuses au cours du temps. L'odeur émise peut ainsi servir comme "variable de process" pour suivre en continu, voire contrôler, des processus utilisant la bio dégradation de produits, comme le compostage, la bio méthanisation ou le bio séchage. [less ▲]

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See detailObservations
Lecocq, Pascale ULg

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

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See detailObservations
Lecocq, Pascale ULg

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

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