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See detailCommunautés médiatiques et lecteurs truqués au XIXe siècle
Stienon, Valérie ULg

Scientific conference (2015, March 27)

La presse du XIXe siècle est attentive à instaurer un dialogue régulier et diversifié avec son lectorat, qui s’étend au fil du siècle à de nouvelles personnes : ouvrier, femmes, enfants. Or, la plupart du ... [more ▼]

La presse du XIXe siècle est attentive à instaurer un dialogue régulier et diversifié avec son lectorat, qui s’étend au fil du siècle à de nouvelles personnes : ouvrier, femmes, enfants. Or, la plupart du temps, ces voix et figures de lecteurs en journal sont fabriquées de toutes pièces : faux profils, rubriques convenues, individualisation artificielle d’une catégorie de destinataires, confusion entre les récepteurs et l’équipe de rédaction, etc. Les procédés varient entre les journaux qui donnent à voir des lettres de lecteurs, ceux qui exhibent l’interlocution elle-même et ceux qui jouent avec les discours supposés du lectorat. Ce dernier procédé conduit à examiner dans quelle mesure l’équipe de rédaction du journal se constitue, s’autodéfinit et se conforte à travers une rhétorique et une pragmatique concertées de la mention du lectorat : il s’agirait moins de donner la parole que de feindre de le faire, pour mieux s’exprimer dans l’entre-soi de l’espace déjà socialisé de la communication médiatique. Ce phénomène pose aussi la question d’une réception ressaisie à travers la textualité du journal et modulable par l’instance collective de production. Enfin, en créant son lectorat autant sinon davantage qu’il le désigne, le journal introduit de la médiation dans un discours adressé et, ce faisant, poétise les figures de destinataires et produit des effets de littérarité. On peut examiner la constitution des profils de lecteurs dans plusieurs périodiques de l’époque pour apporter des éléments de réponse à ces questions : - que nous apprennent ces stratégies discursives à propos de la collectivité du journal, attentive à programmer sa réception ? - dans quelle mesure les communautés médiatiques peuvent-elles véritablement accueillir le dialogue avec leurs lecteurs ? - y a-t-il des différences significatives entre petite et grande presses, la première étant certes davantage portée sur les logiques ludique et autoréférentielle, mais fonctionnant surtout en effectifs restreints dans sa production et sa réception ? [less ▲]

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See detailHenri Lévy-Bruhl et Fernand De Visscher, une amitié Franco-Belge
Gerkens, Jean-François ULg

Conference (2015, March 27)

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See detailLa dynastie belge et la science, 1909-1959
Pirot, Pascal ULg

Doctoral thesis (2015)

The project consists in investigating the role of the Belgian dynasty in scientific development since the beginning of the reign of king Albert I (1909), until the establishment of the National Council ... [more ▼]

The project consists in investigating the role of the Belgian dynasty in scientific development since the beginning of the reign of king Albert I (1909), until the establishment of the National Council for Science Policy (CNPS) in 1959, during king Baudouin's reign, following the publication of the work of the "National Commission on Science" which released its conclusions in the same year. The study deals with the action of the sovereign and the networks he formed with his entourage (the queen, the crown prince, the advisers of the court, some close relations of the king, the ministers in charge of scientific affairs) in the field of science, along various research themes; how these people saw the role of science in society; what influence they had in the development of science (institutions, initiatives, projects); what relationships existed between the dynasty and the scientific institutions; what the relationships between the dynasty and the Congo were in the realm of science. This perspective, which focuses on three Belgian sovereigns of the twentieth century, should make it possible to assess the development and progressive implementation of the "science policy". To date, no study has been specifically devoted to this topic. [less ▲]

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See detailFreud’s thinking about homosexuality
Naziri, Despina ULg

Scientific conference (2015, March 27)

Chair: François Ladame (Swiss Soc) Presentations: Anders Carlberg (Swedish Assoc) / Sara Flanders (British Soc) / Petra Heymanns (German Assoc) / Despina Naziri (Belgian Soc) / Denny Panitz (Hellenic Soc ... [more ▼]

Chair: François Ladame (Swiss Soc) Presentations: Anders Carlberg (Swedish Assoc) / Sara Flanders (British Soc) / Petra Heymanns (German Assoc) / Despina Naziri (Belgian Soc) / Denny Panitz (Hellenic Soc) The EPF ad-hoc group on homosexuality (Anders Carlberg (Swedish Assoc.), Sara Flanders (British Soc.), Petra Heymanns (German Assoc.), François Ladame (Swiss Soc.), Despina Naziri (Belgian Soc.), and Denny Panitz (Hellenic Soc.)) will present the result of their thorough exploration of what Freud did say and didn’t say about homosexuality. To get there, we first did a chronological – and hopefully comprehensive – review of Freud’s writings on the issue. On a second step, we gathered the quotations according to a number of themes: bisexuality, narcissism, development, aggression and conflict, identification and Oedipus, and perversion/inversion. For the panel, the presentation on Freud’s thinking on homosexuality shall be organised around four “dimensions”: bisexuality, object choice, normality/pathology, and the quantitative factor, with a few “variables” impacting in various ways on each of them (narcissism, free aggressiveness, the socio-cultural context, and the historical meaning of perversion). Due consideration will also be given to the general theme of the Conference “too much – not enough”. As our results are questioning and challenging, enough time shall be kept for the discussion with the floor. [less ▲]

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See detailEnergetics and Structural Characterization of Isomers Using Ion Mobility and Gas-phase H/D Exchange: Learning from Lasso Peptides
Hanozin, Emeline ULg; Morsa, Denis ULg; De Pauw, Edwin ULg

in Proteomics (2015), online accepted paper

State-of-the-art characterization of proteins using mass spectrometry namely relies on fragmentation methods which allows exploring featured dissociative reaction pathways. These pathways are often ... [more ▼]

State-of-the-art characterization of proteins using mass spectrometry namely relies on fragmentation methods which allows exploring featured dissociative reaction pathways. These pathways are often initiated by a series of potentially informative mass-constant conformational changes that are nonetheless frequently overlooked by lack of adequate investigation techniques. In the present study, we propose a methodology to readily address both structural and energetic aspects of stereoisomerization reactions using ion mobility coupled with mass spectrometry. To this end, a commercial spectrometer was used as a reactor comprising an energy resolved collisional activation step intended at promoting controlled conformational changes and a structural assignment step dedicated to the identification of the generated isomers. This identification relies on ion mobility and other on-line coupled techniques, namely an originally designed gas-phase H/D exchange experiment. We here apply this methodology to characterize the isomerization kinetics of capistruin, a 19-residue long lasso-folded peptide. We expect this approach to bring insights into the physical origin of global dissociation thresholds monitored in tandem mass spectrometry experiments and to set a promising basis for quantitative investigations of the stability of different molecular folds. [less ▲]

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See detailInternal dynamics, innovation and investments in sustainability
Crutzen, Nathalie ULg; Rammal, Hussain; Burritt, Roger

Conference (2015, March 26)

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See detailEditing a Multilingual Corpus of Letters. A Methodological Approach
Valenti, Gianluca ULg

Conference (2015, March 26)

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See detailDétection de l'érosion dans un bassin versant agricole par comparaison d'images multidates acquises par drone
Lisein, Jonathan ULg; Pineux, Nathalie ULg; Pierrot-Deseilligny, marc et al

Scientific conference (2015, March 26)

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See detailSobre la importancia de los escritores: un ejemplo de apariencia contrafactual
Ceballos Viro, Alvaro ULg

Scientific conference (2015, March 26)

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See detailGigantism, acromegaly, and GPR101 mutations.
Daly, Adrian ULg; Trivellin, Giampaolo; Stratakis, Constantine

in New England Journal of Medicine (2015), 372(13), 1265

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See detailApplications of stable isotopes in environmental studies at the University of Liege
Sturaro, Nicolas ULg; Borges, Alberto ULg; Das, Krishna ULg et al

Poster (2015, March 26)

Measurement and use of stable isotope ratios have a long history at the University of Liege (Belgium). Since at least 30 years, applications of stable isotopes in marine ecosystems have been developed ... [more ▼]

Measurement and use of stable isotope ratios have a long history at the University of Liege (Belgium). Since at least 30 years, applications of stable isotopes in marine ecosystems have been developed within the Laboratory of Oceanology and, more recently, within the Chemical Oceanography Unit. In the Laboratory of Oceanology, one research axis is the measurement of stable isotope composition (C, N, S) in organic matter to delineate trophic web structure and to study animal diet, their trophic niches and their alteration by human activities. This methodology has been successively applied worldwide in different habitats and ecosystems (marine, freshwater, terrestrial) in temperate and tropical areas. Mediterranean food web and fish trophic ecology have received a particular attention. Coupling between trophic ecology and ecotoxicology is another area of investigation. This has been applied mainly to marine vertebrates and freshwater ecosystems. Stable isotope labelling is also used in our laboratory to study and quantify various ecological processes such as inorganic nitrogen incorporation and trophic transfers. The laboratory facilities, renewed in 2012 and managed by Dr. Gilles Lepoint, are composed of an elemental analyser (EA, vario MICRO cube, Elementar) and a gas chromatography (GC, Agilent) coupled to an isotope ratio mass spectrometer (IRMS, Isoprime 100). The GC is also equipped with a quadrupole mass spectrometer. In 2014, the Chemical Oceanography Unit, headed by Dr. Alberto Borges, has acquired and implemented an off-axis cavity ring-down spectroscopy (CRDS) for the measurements of δ15Nα, δ15Nβ, δ18O of N2O. This enables characterization of the N2O origin in a variety of aquatic environments including groundwater in Wallonia, rivers and lakes in Wallonia and Africa, coastal environments (Scheldt estuary, Lake Grevelingen, North Sea), Mediterranean seagrass beds, and Antarctic and Arctic sea-ice. [less ▲]

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See detailThe development of mobility controls
Crutzen, Nathalie ULg; Qian, Wei

Conference (2015, March 26)

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See detailUse of C, N and S stable isotope ratios to highlight resource segregation among hermit crabs from tropical seagrass meadows
Michel, Loïc ULg; Frederich, Bruno ULg; Lavitra, Thierry et al

Poster (2015, March 26)

Polyspecific seagrass meadows are ubiquitous features of tropical coastal zones. These ecosystems are of critical ecological importance, and provide a wide range of socio-economical services to local ... [more ▼]

Polyspecific seagrass meadows are ubiquitous features of tropical coastal zones. These ecosystems are of critical ecological importance, and provide a wide range of socio-economical services to local populations. Meadows however undergo multiple threats linked to human activities (increased nutrient input, overfishing, invertebrate overharvesting, etc.). It is currently hard to assess how seagrass meadows could respond to anthropogenic impacts due to poor knowledge of their functional ecology. In an effort to unravel trophic interactions ruling the food webs associated to seagrass beds of the Toliara Great Reef (SW Madagascar), we studied resource segregation between two common Diogenidae hermit crabs (Dardanus scutellatus and Ciliopagurus tricolor) using stable isotope ratios. C, N and S stable isotope ratios of bulk muscle tissue were measured via CF-EA-IRMS (Elementar Vario MicroCube EA coupled to an Isoprime 100 MS). Interspecific differences were noted in isotopic composition of carbon (δ13C = -12.22 ± 1.73 ‰ for D. scutellatus, δ13C = -14.55 ± 0.73 ‰ for C. tricolor), nitrogen (δ15N = 4.73 ± 0.53 ‰ for D. scutellatus, δ15N = 5.20 ± 0.61 ‰ for C. tricolor) and sulfur (δ34S = 14.08 ± 2.32 ‰ for D. scutellatus, δ34S = 16.73 ± 1.49 ‰ for C. tricolor), suggesting that the two species do not feed on the same items. In addition, SIBER (Stable Isotope Bayesian Ellipses in R) modeling based on C and N data clearly showed that no overlap was present in the core isotopic niches of the two species. It also indicated that the isotopic niche of D. scutellatus was greater than the one of C. tricolor, implying that the former feeds on a greater number of items than the latter. While hermit crabs are generally considered as omnivorous species, this study highlighted differences in the foraging ecology of D. scutellatus and C. tricolor. These differences could help to limit competition for food between these two species, and facilitate their coexistence in Malagasy seagrass beds. [less ▲]

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See detailA doublescale model for hydromechanical coupling in clay rocks
van den Eijnden, Abraham Pieter ULg; Bésuelle, Pierre; Collin, Frédéric ULg et al

Conference (2015, March 26)

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See detailAdherence to physical activity recommendations and its associated factors: an interregional population-based study
Alkerwi, Ala'a; Schuh, Barbara; Sauvageot, Nicolas et al

in Journal of Public Health Research (2015), 4(1),

Background. Though the influence of physical activity in preventing cardiovascular diseases is well documented, only a few comparative studies have determined the degree of adherence to physical activity ... [more ▼]

Background. Though the influence of physical activity in preventing cardiovascular diseases is well documented, only a few comparative studies have determined the degree of adherence to physical activity recommendations among populations and identified the demographic, socioeconomic, behavioural and health-related factors associated with good compliance. Design and methods. Cross-sectional interregional NESCaV survey of 3133 subjects compared three populations, Luxembourg, Lorraine (France) and Wallonia (Belgium), by using the International Physical Activity Questionnaire. Age and gender prevalence rates of physical activity were standardized to the European population. Results. The likelihood to meet the recommendations was higher in Luxembourg, after adjustment for age, gender, education, employment, weight status, morbidity score, health perception and level of importance attributed to the practice of physical activity (P<0.0001). The odds for meeting the recommendations were significantly higher among those with secondary than tertiary education. Compared to good self-health perception, subjects with poor or fair self-perceived health were less likely to meet the recommendations; this also applied to those attributing little or enough importance to physical activity compared with great importance. Conclusions. Region, education, self-perceived health and perception of importance of physical activity were emerged as independent determinants of meeting the recommendations. Awareness of the positive health effects of physical activity might thus be crucial for motivating the people to become more active. Further research is needed to explore potential region-specific factors which might explain the difference in population behaviours with respect to physical activity. [less ▲]

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See detailLa simulation thermo-aéraulique du bâtiment : Validation et développement d’une approche couplée CFD-Multizone pour l’étude de la modélisation du phénomène de surchauffe estivale en Belgique
Barbason, Mathieu ULg

Doctoral thesis (2015)

For decades, growing interests in environmental and buildings energy performance concerns lead architects and building engineers to develop new skills and to get used to advanced simulation tools. Among ... [more ▼]

For decades, growing interests in environmental and buildings energy performance concerns lead architects and building engineers to develop new skills and to get used to advanced simulation tools. Among them, Multizone models and Computational Fluid Dynamics (CFD) models are increasingly used to solve problems of building physics. This Thesis reports the development of a new and optimized tool based on the coupling of these two tools and its application to a typical Belgian two-storey house. Indeed, separately, these two tools have significant advantages and disadvantages : • Multizone models are based on the hypothesis that the temperature is uniform in every simulated zone which implies that they are not suited for large spaces. However, in small spaces, Multizone models generate accurate results in a small amount of time. • CFD models are very accurate, independently of the size of the room or the type of physical phenomena encountered. However, it is also well known that CFD simulation are time and resources consuming. Consequently, it is not possible to use it for a long term study. This Thesis will first introduce these approaches and discuss their validity field. In order to do this, a validation process has been developed to assess the ability of CFD to model accurately physical phenomena at different study scales. This Thesis will then discuss the coupling scheme developed in this study, based on experimental results of a two-storey house in Belgium. Different coupling level will be studied in order to understand deeply needs of such approach. Eventually, it will be shown that coupling approach can drastically improve overheating prediction for buildings even for a long term simulation. Thanks to this new tool, building actors may design optimized cooling strategies while maximizing occupants comfort. [less ▲]

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