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See detailL'évolution des systèmes électoraux de la Belgique
Bouhon, Frédéric ULiege; Reuchamps, Min

Conference (2019, December 10)

Organisation et introduction d'une journée de colloque sur l'évolution des systèmes électoraux de la Belgique.

Detailed reference viewed: 24 (1 ULiège)
See detailSession: Presentation of self-peptides in the thymus as an essential event of life.
Geenen, Vincent ULiege

Conference (2019, September)

This session was organized within the framework of RegPep2018. Georg HOLLAENDER(Oxford University), Hiroyuki TAKABA (University of Tokyo) and Vincent GEENEN (University of Liège) presented the latest data ... [more ▼]

This session was organized within the framework of RegPep2018. Georg HOLLAENDER(Oxford University), Hiroyuki TAKABA (University of Tokyo) and Vincent GEENEN (University of Liège) presented the latest data about epigenetic, genetic and cellular mechanisms responsible for the programming of central self-tolerance of the adaptive immune system. [less ▲]

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Peer Reviewed
See detailLa philosophie allemande comme rempart critique (1946-1949)
Franck, Thomas ULiege

Conference (2019, June)

Nous étudierons dans cette communication la manière dont se constitue, dès les premiers numéros de Critique, une théorie critique se positionnant par rapport à l’héritage de la philosophie allemande. Ce ... [more ▼]

Nous étudierons dans cette communication la manière dont se constitue, dès les premiers numéros de Critique, une théorie critique se positionnant par rapport à l’héritage de la philosophie allemande. Ce parti pris se justifie par le projet d’une mise en lumière des stratégies intellectuelles et discursives visant à renouer, après la Seconde Guerre mondiale, avec une philosophie politique allemande susceptible de fournir des outils théoriques à l’analyse des conflits nationaux et internationaux. Il apparaît en effet que plusieurs animateurs fondamentaux de la revue considèrent ce rapport comme l’un des enjeux majeurs pour le champ intellectuel français d’après-guerre . Le recours (souvent ambivalent) à des philosophes tels que Kant, Hegel, Feuerbach, Marx, Engels, Bloch, Lukács et Heidegger, à la musique de Schönberg, Berg, Wagner et Beethoven et aux interprétations de Eisler, Adorno et Schönberg lui-même ou encore les analyses des politiques et des idéologies allemandes de guerre et d’après-guerre constituent en effet une part non négligeable des articles parus dans les premiers numéros de la revue Critique. Par souci méthodologique, nous restreindrons notre étude aux années 1946 à 1949, cette date correspondant à l’émergence de nouvelles problématiques liées à l’avenir des deux Allemagne dans la continuité de la Grundgesetz für die Bundesrepublik Deutschland signée en mai 1949 . [less ▲]

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See detailConscience de soi et schizophrénie
Englebert, Jérôme ULiege

Conference (2019, April 24)

Detailed reference viewed: 16 (1 ULiège)
See detailTrouble psychotique et logiques relationnelles
Englebert, Jérôme ULiege

Conference (2019, March 23)

Detailed reference viewed: 40 (7 ULiège)
See detailL’approche de Carl Rogers et la philosophie existentielle
Englebert, Jérôme ULiege

Conference (2019, February 04)

Detailed reference viewed: 36 (2 ULiège)
Peer Reviewed
See detailTunable carbon-supported catalyst materials processed by low-pressure plasma treatments of solid precursors
Pireaux, Jean-Jacques; da Silva Pires, Mathieu; Bocchese, Fabrice et al

Conference (2019, February)

Detailed reference viewed: 26 (0 ULiège)
Peer Reviewed
See detailRegards éthique et phénoménologique sur les contextes de la prise en charge des AICS
Englebert, Jérôme ULiege

Conference (2019, January 31)

Detailed reference viewed: 29 (3 ULiège)
See detailLes temps carcéraux
Englebert, Jérôme ULiege

Conference (2019, January 26)

Detailed reference viewed: 21 (6 ULiège)
See detailTrouble borderline et logiques relationnelles
Englebert, Jérôme ULiege

Conference (2019, January 19)

Detailed reference viewed: 33 (3 ULiège)
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See detailHistorical introduction to the history of the thymus and the concept of immune self-tolerance
Geenen, Vincent ULiege; Martens, Henri ULiege

Conference (2019)

The name ‘thymus’ first appeared in Galen’s manuscripts (±160 AD) and was so named because of its morphological analogy with the leaf of Thymus cunila. For centuries however, this organ was considered ... [more ▼]

The name ‘thymus’ first appeared in Galen’s manuscripts (±160 AD) and was so named because of its morphological analogy with the leaf of Thymus cunila. For centuries however, this organ was considered only as a vestigial organ that served as a cushion between the sternum and basal blood vessels, and then involuted after puberty. In the late 50’s, JFAP Miller discovered that the thymus was the site for development of a special population of immune cells, the thymo-dependent T lymphocytes. In concordance with P Ehrlich’s early concept of ‘horror autoxicus’, FM Burnet predicted in 1962 that the thymus should play a crucial role in the elimination of developing lymphocytes with potential reactivity against the ‘self’ (‘forbidden’ T cell clones). This theory of intrathymic negative selection of self-reactive T cells was finally demonstrated in late 80’s through the elegant studies in the laboratories of N Le Douarin (Nogent-sur-Marne), P Marrack and J Kappler (Denver), HR Mac Donald (Lausanne) and H von Boehmer (Basel). In the same time, an important question raised about the biochemical nature of the ‘self’ expressed in thymic microenvironment. Our laboratory established that thymic epithelial cells (TECs) from different species transcribe dominant genes of many neuroendocrine families (OT for neurohypophysial family, NKA for tachykinins, NT for neuromedins and IGF-2 for insulin family). However, after transcription, neuroendocrine precursors are not linked to classic (neuro)secretion. Their processing is the source of neuroendocrine self-peptides that are presented by proteins of the major histocompatibility complex (MHC) expressed by TECs and thymic dendritic cells. Through this unique process, already during fetal development, the thymus programs central self-tolerance of the adaptive immune system to neuroendocrine functions and this was an absolute necessity after emergence of this novel form of immunity generating the diversity of antigen recognition some 470 millions years ago. The laboratory of the late B Kyewski further demonstrated the central role of the thymus in central immune tolerance to almost all peripheral tissues. Several laboratories then addressed the logical hypothesis that a defect in the tolerogenic function of the thymus could be a primary event promoting the development of autoimmunity. Several experimental data argued for this assumption and the question was definitively solved with the identification of the AutoImmuneREgulator gene. AIRE controls the level of transcription of many (but not all) tissue specific self-peptides in medullary TECs and AIRE mutations (or Aire ablation) is associated with the development of autoimmunity tackling many peripheral organs. More recently, the Fezf2 gene, already known to be involved in neuronal development, was shown to be expressed in TECs and to regulate the transcription level of Aire-independent genes also coding for tissue specific self-antigens. As stated by several authors, the discovery of the central tolerogenic of the thymus revolutionized the whole field of immunology. Undoubtedly, this novel knowledge will pave the way for innovative tolerogenic therapies aiming to prevent and treat autoimmunity, the so heavy tribute paid by all mankind for the extreme diversity and efficiency of adaptive immunity. (Vincent Geenen is research director at F.S.R.-NFSR of Belgium. Supported by F.S.R.-NFSR, Wallonia, the Federation Wallonia-Brussels, European Union, JDRF, and the Fonds Léon Fredericq of Liège University Hospital.) References 1. Martens H, Goxe B and Geenen V. The thymic repertoire of neuroendocrine self-antigens: physiological implications in, T cell life and death. Immunol Today 1996; 17:312-7. 2. Geenen V et al. Programming of neuroendocrine self in the thymus and its defect in the development of neuroendocrine autoimmunity. Front Neurosci 2013; 7: article 187 - doi: 10.3389/fnins.2013.00187. 3. Geenen V. Histoire du thymus : d’un organe vestigial à la programmation de la tolérance immunitaire. Med Sci 2017; 33:653-63. [less ▲]

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Peer Reviewed
See detailModeling non-stationary operational risk: A smooth-transition distributional regression approach
Hambuckers, Julien ULiege; Kneib, Thomas

Conference (2018, December 15)

The distribution of operational losses is particularly challenging to model, due to the high probability of extremes and the existence of time-varying structural dependencies. In particular, operational ... [more ▼]

The distribution of operational losses is particularly challenging to model, due to the high probability of extremes and the existence of time-varying structural dependencies. In particular, operational loss severity distribution is often concerned with changes in regulations, business cycles or financial crises that affect the dependence structure with potential predictors. To help accounting for this empirical feature, we introduce smooth-transition (ST) Generalized Pareto (GP). In this time-varying regression model, the parameters of the GP distribution are related to explanatory variables through a regression function, which depends itself on a time-varying predictor of structural changes. First, we discuss the computational challenges associated to this class of models. Then, we propose several estimation strategies and investigate their finite sample properties in a simulation study. Eventually, we use our findings to study the time-varying dependence structure of monthly operational risks with market volatility and past extreme events. [less ▲]

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See detailWhat do the Brazilian piranhas have to tell us?
Raick, Xavier ULiege; Huby, Alessia ULiege; Kurchevski, Gregório et al

Conference (2018, December 15)

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Peer Reviewed
See detailLe Temple et le cantique de Syméon en Luc 2, 29-32. Analyse d’une métaphore poétique opérée par l’auteur du 3e Évangile
Bassilua Nzuzi, Anicet ULiege

Conference (2018, December 15)

The Bible contains a number of religious songs designated by Hebrew terms, then Greek (hymnos, ôdè, psalmos), often of similar meaning. The Old Testament provides many examples through the Psalter. In the ... [more ▼]

The Bible contains a number of religious songs designated by Hebrew terms, then Greek (hymnos, ôdè, psalmos), often of similar meaning. The Old Testament provides many examples through the Psalter. In the New Testament, it is attested (Lehmann, 2009) that Jesus and his disciples had an intimate knowledge of the Psalms. These songs of the Old Testament were particularly used in the liturgy of the Temple of Jerusalem, especially for sacrifices, feasts, processions. Their use has even been extended to the field of private religion (Ibid.). It turns out that these texts inspire some others in the New Testament, like the four hymns that appear at the beginning of Luke's gospel (1,46-55: Magnificat; 1,68-79: Benedictus 2, 14: Gloria: and 2, 29-32: Nunc Dimittis). Of these four hymns, that of Simeon (the Nunc Dimittis) is pronounced in the Temple thus opening a track that links the capture of its contours in consideration of the context of its execution, the sanctuary. We propose to analyze this link. Indeed, we know that the first two chapters of the Gospel of Luke function as the « narrative beginning » of the entire « work to Theophilus » - Luke-Acts - (Gerber, 2009) and that in these two chapters the information provided on the birth of Jesus was carefully chosen and placed as the foundation of God's soteriological project presented in this book. As a result, the four songs contained in this sequence are part of this literary strategy of the author of Luke (Dillon, 2006) who, unlike Paul or Marc who present the work of salvation through the theology of the cross (ie the death of Jesus), places the moment of salvation in his birth. This birth is thus declined in words, miracles and acts of compassion (Marguerat, 2008) who call, for the characters chosen by Luke, the praise. This is how these words are placed especially in the mouth of Simeon. And their significance deserves a stop for a moment. The formula εὐλόγησεν τὸν θεὸν (v. 28) placed at the beginning of the hymn seems to indicate that the following point of view is that of the author (Lohfink, 1994); the verb ὁράω (see) which qualifies the wonder realized by God vis-à-vis Simeon does not appear as a fruit of chance, etc. As it can be seen, the combination of spoken words with the character who pronounces it (Simeon, pious man) - obviously the song of Simeon has a parallel in the book of Jubilee (Jub 22: 7-9) and in Cicero ( The Republic, VI, 9) - and the place where they are pronounced (the Temple) tends to suggest an additional layer - if not the main one - of the meaning that Luke proposes to Nunc Dimittis at least in the understanding that he wants to give to this event occurred at the Temple (the meeting between Jesus and Simeon). By putting this text in parallel with others of the Old Testament - the New Testament provides many cases of proofreading of the ancient texts operated by the first Christians (1st - 2nd Century) - as the one who reports the vision (see) of Ezekiel of the departure of the glory of God from the Temple (Ez, 10), we find an illumination of this soteriological dimension that Luke proposes in his work. Jesus, qualified of your salvation (τὸ σωτήριόν σου) in the mouth of Simeon, is seen as the return of the glory of God in the same Temple. So, we can clearly see that, starting from these elements, the topological anchoring of the performance of Simeon's song, the Temple, makes the latter (the Temple) a metaphor of the hymn itself. [less ▲]

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Peer Reviewed
See detailThe Admissibility of Multiple Human Rights Complaints: Strasbourg and Geneva Compared
Deprez, Christophe ULiege

Conference (2018, December 14)

Forum duplication in international human rights litigation is closely connected to the general debate on the proliferation and (in)efficiency of the global system of human rights protection. This ... [more ▼]

Forum duplication in international human rights litigation is closely connected to the general debate on the proliferation and (in)efficiency of the global system of human rights protection. This presentation sought to provide a practical, comparative overview of the applicable rules and relevant case law of the European Court of Human Rights ('ECtHR') and of the UN Human Rights Committee ('HRCee') on this issue. While specific inadmissibility clauses have been drafted within these two regimes with a view to preventing multiple human rights petitions in relation to the same matter, their respective scopes differ. Moreover, both in Strasbourg and Geneva, the applicable normative framework has led to important judicial developments which deserve to be thoroughly addressed. [less ▲]

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See detailObservations of satellite footprints in Jupiter's Aurorae
Mura, A.; Adriani, A.; Altieri, F. et al

Conference (2018, December 12)

JIRAM (Jovian Infrared Auroral Mapper) on board Juno is an imager/spectrometer in the 2-5 um range. One imaging channel is designed to study the Jovian H3+ auroral emissions. Its high angular resolution ... [more ▼]

JIRAM (Jovian Infrared Auroral Mapper) on board Juno is an imager/spectrometer in the 2-5 um range. One imaging channel is designed to study the Jovian H3+ auroral emissions. Its high angular resolution, combined with the unique vantage point provided by Juno, allows JIRAM to observe the aurorae in unprecedented detail. Here we present the results from ~2 years of observations of the auroral footprints of the Galilean moons. These are bright spots and associated tail that appear in Jupiter’s ionosphere at the base of the magnetic field lines which sweep past Io, Europa, and Ganymede. The moons are obstacles in the path of Jupiter’s rapidly rotating magnetospheric plasma, and the resulting electromagnetic interaction launches Alfvén waves along the magnetic field towards Jupiter, where intense electron bombardment of the hydrogen atmosphere causes it to glow. Recent observations reveal for the first time that the footprint of Io is comprised of a regularly spaced array of emission features, extending downstream of the leading footprint. Contrary to the larger spots seen in lower resolution images, the small scale of these multiple features (~100 km) is incompatible with the simple paradigm of multiple Alfvén wave reflections. Additionally, observations of Io’s trailing tail well downstream of the main footprint reveal a pair of closely spaced parallel arcs, previously unresolved. The temperatures of the main spot and tail, retrieved with the JIRAM spectrometer, are lower than the main auroral oval. This could indicate that the emission is located at a deeper level, possibly caused by higher energy electrons. Ganymede’s footprint spots (main and secondary) appear as a pair of emission features that provide a remote measure of the size Ganymede’s magnetosphere, mapped from its distant orbit onto Jupiter’s magnetosphere. [less ▲]

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See detailLes travailleurs de plateformes : statut de salariés, d'indépendants ou troisième voie?
Kéfer, Fabienne ULiege; Cordier, Quentin ULiege

Conference (2018, December 12)

What social status could the legislator develop to secure the professional careers of platform workers? The "third way", known in other countries (the conference is based on a comparative law study), is ... [more ▼]

What social status could the legislator develop to secure the professional careers of platform workers? The "third way", known in other countries (the conference is based on a comparative law study), is unsatisfactory. The more advantageous status of employee is very complex to set up given the great freedom enjoyed by most platform workers. The self-employed status could be based on what exists for hospital doctors, commercial agents, etc. [less ▲]

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See detailAnalysis of trends in total stratospheric ozone
Salawitch, Ross J; Tribett, W R; Wales, P et al

Conference (2018, December 12)

Time series of total column ozone have exhibited unusual, unexpected behavior over the past few years. In year 2016, total ozone was lower than expected based on some forecasts that utilize the time ... [more ▼]

Time series of total column ozone have exhibited unusual, unexpected behavior over the past few years. In year 2016, total ozone was lower than expected based on some forecasts that utilize the time evolution of equivalent effective stratosphere chlorine (EESC). Conversely, total column ozone exhibited a sharp rise in 2017. The existence of a new formulation (i.e., Engel et al., ACP, 2017) for the fractional release factors (FRFs) used to find EESC for mid-latitude lower stratospheric air parcels, the contribution of very short-lived chlorine and bromine compounds to EESC, as well as possible temporal variations in tropospheric column ozone compound the difficulty in establishing a quantitative relationship between the time evolution of EESC and stratospheric ozone. This presentation will consist of an analysis of the ~40 year record of total column ozone measured from space (e.g., version 8.6 of the NASA SBUV Merged Ozone Data Set at the time of abstract submission), along with: a) stratospheric chlorine loading from various satellite instruments as well as the long-term ground-based measurement from Jungfraujoch, Switzerland; b) various other quantities that affect the long-term evolution of stratospheric ozone (e.g., total solar irradiance, stratospheric optical depth, quasi-biennial oscillation of the direction of tropical stratospheric winds) c) estimates of tropospheric column ozone to assess our understanding of trends in total stratospheric ozone. Preliminary results indicate better quantitative understanding is attained for the new FRFs, which lead to a more gradual recovery of total stratospheric ozone than is found using the old FRFs. Reference: Engel, A. et al., ACP, 18, 601619, doi:10.5194/acp-18-601-2018, 2018. [less ▲]

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See detailLa clinique en situations extrêmes : Questions d'engagement ?
Glowacz, Fabienne ULiege

Conference (2018, December 12)

Detailed reference viewed: 20 (1 ULiège)
See detailMartian upper-atmosphere circulation and tides revealed through MAVEN/IUVS observations of nitric oxide nightglow
Schneider, N.M.; Stiepen, A.; Milby, Z. et al

Conference (2018, December 11)

The nitric oxide δ and γ bands are ultraviolet emissions which reflect the production rate of nitric oxide (NO) from the recombination of excited nitrogen and oxygen atoms. We use it as a tracer of the ... [more ▼]

The nitric oxide δ and γ bands are ultraviolet emissions which reflect the production rate of nitric oxide (NO) from the recombination of excited nitrogen and oxygen atoms. We use it as a tracer of the dynamics between Mars’ upper- and middle-atmospheres, particularly of day-to-night and summer-to-winter pole circulation. We analyse this rate as it varies over Mars’ surface in mission-long aggregations and local-time divisions. Our data were gathered by the Mars Atmosphere and Volatile Evolution (MAVEN) mission’s Imaging UltraViolet Spectrograph (IUVS) and span different seasonal conditions and latitudes. The data span allows a limited comparison between two subsequent Mars years. In our previous study from a limited dataset of atmospheric limb scans (Stiepen 2017, doi:10.1002/2016JA023523), we discovered a wave-3 structure to the nightglow at equatorial latitudes. For this study, we use scans taken of the full disk of Mars as seen at apoapse over 1.25 Mars years. We observe the same wave-3 structure, and find strong seasonal and local-time dependencies on position and brightness. We also discovered a wave-2 structure in northern polar regions that persists through all observed local times and seasons. We compare our observations to model calculations from the LMD-MGCM. We find the model generally under-predicts the brightness of the nightglow at all sub-polar latitudes, suggesting it over-estimates the efficiency of atomic transport to the poles. However, we also find that the model reproduces the observed equatorial wave-3 and polar wave-2 structures. We identify the dominant atmospheric tide component of the equatorial wave-3 structure and analysis of the local-time dependencies of the wave structures and the brightness across all latitudes. We also compare the observed polar nightglow wave structure to contemporaneous dayside ozone distributions also measured by IUVS. [less ▲]

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See detailFrom Liège to Kyoto and Back: Creation of an International Network in Game Studies
Barnabé, Fanny ULiege

Conference (2018, December 08)

Introduced by the First Vice-Rector of the University of Liège, Prof. Dr. Eric Haubruge, who will first discuss the major challenges of digital development at the University, particularly in the field of ... [more ▼]

Introduced by the First Vice-Rector of the University of Liège, Prof. Dr. Eric Haubruge, who will first discuss the major challenges of digital development at the University, particularly in the field of education, this meeting proposes to focus on the process of building an international partnership between two research centres on video games, the Ritsumeikan Center for Game Studies (RCGS) and the Liège Game Lab (LGL). This partnership is intended to be part of a broader network of video game research laboratories around the world. It relies on the French-speaking side on the creation of a network of French-speaking laboratories since May 2018 and on the Japanese side on the national branch of Digra (Digra Japan). Ritsumeikan Center for Game Studies (RCGS) was established as part of the Ritsumeikan University Kinugasa Research Organization in April 2011. It is Japan's only academic organization in the field of game studies. The Center conducts both specialized and comprehensive research on a wide range of games and play, from traditional toys and play equipment to games that use the most recent technology. It uses the strengths of a comprehensive university and its location in Kyoto, the cradle of games in Japan, to accomplish these aims. Moreover, in order to encourage government-industry-academia partnerships further in this area, the Center has taken as its mission the proactive fulfillment of its role as a bridge between governmental/public agencies and game-related companies and organizations. Major research topics - Constructing an archive of digital games - Aesthetic research on playing and games - Research on potential social and educational applications for games - General research on the domestic and international game industries The Liège Game Lab, created in January 2016, brings together researchers from the University of Liège (Belgium) who work on video games as a cultural object using conceptual tools from literary studies and communication sciences. From an institutional point of view, the LGL is an independent and transfaculty research collective. The research of the members of the LGL converges in that they all develop a cultural and communicational approach to the videogame medium, with perspectives rooted in philosophy and literature and with a particular interest in the "margins" of the game (diversions, amateur productions, video game press, intermedia relations, peripheral or "secondary" forms of game, etc.), i.e. for the "videogame culture" as a whole. We could thus identify three theoretical axes common to the research carried out in the lab. The first consists in studying the game around the game, through peripheral video game cultural practices, i.e. studying the game where it is not obvious. The second is based on the deconstruction of the notion of immersion, used extensively in research and often without questioning it. Finally, as an extension of these reflections, the Lab's work also tends to rethink the game as a communicative act. Prof. Dr. Hiroshi Yoshida (RCGS) and Dr. Fanny Barnabé (LGL) will discuss the difficulties of building such a partnership: language is obviously the first stumbling block, even if English is suitable for the main interactions. Distance is also a problematic factor, as meetings cannot be very regular or impromptu. However, there are also subsidies, such as financial support for bilateral partnerships developed by the Fonds national de la recherche scientifique (F.R.S.-FNRS) and the Japan Society for the Promotion of Science - JSPS. Beyond the pitfalls of these practical contingencies, however, it is the intellectual and symbolic benefits that must be highlighted in this type of collaboration: new ideas emerge from the confrontation between different research traditions and a great mutual intellectual enrichment results from these exchanges. The partners are therefore sparing no effort to extend them. [less ▲]

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See detailRecurrent machines for likelihood-free inference
Pesah, Arthur; Wehenkel, Antoine ULiege; Louppe, Gilles ULiege

Conference (2018, December 08)

Likelihood-free inference is concerned with the estimation of the parameters of a non-differentiable stochastic simulator that best reproduce real observations. In the absence of a likelihood function ... [more ▼]

Likelihood-free inference is concerned with the estimation of the parameters of a non-differentiable stochastic simulator that best reproduce real observations. In the absence of a likelihood function, most of the existing inference methods optimize the simulator parameters through a handcrafted iterative procedure that tries to make the simulated data more similar to the observations. In this work, we explore whether meta-learning can be used in the likelihood-free context, for learning automatically from data an iterative optimization procedure that would solve likelihood-free inference problems. We design a recurrent inference machine that learns a sequence of parameter updates leading to good parameter estimates, without ever specifying some explicit notion of divergence between the simulated data and the real data distributions. We demonstrate our approach on toy simulators, showing promising results both in terms of performance and robustness. [less ▲]

Detailed reference viewed: 23 (2 ULiège)
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See detailHR excellence in research award. What to know about?
Halleux, Isabelle ULiege

Conference (2018, December 06)

Presnetation of the HRS4R process and award to representatives of Czech and Slovak republics, Poland and Hungary. This was part of the quarterly meeting organised by the liaison offices based in Brussels

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See detailVALORIZATION OF CONSTRUCTION, DEMOLITION AND INDUSTRIAL WASTE, A ROUTE TO CIRCULAR ECONOMY
Groslambert, Sylvie ULiege

Conference (2018, December 06)

Building and construction sector represents a large part of global resource consumption and of solid waste production (one third of all waste produced in EU). Therefore, the resource efficiency and ... [more ▼]

Building and construction sector represents a large part of global resource consumption and of solid waste production (one third of all waste produced in EU). Therefore, the resource efficiency and management is crucial in this domain. A very significant part of the construction and demolition waste (CDW) is not recycled today, and the construction and building products and materials include only a very limited part of recycled content. To address these issues, our team is involved in different projects supported by European and regional funds. The first one is ECOLISER, a research project in the field of alternative binders that are more ecological and economical, for the treatment of the mechanical stability of soils and for their waterproofing (funded by FEDER and the Walloon Region). Theses eco-binders are developed from industrial by-products or secondary materials such as slag, bottom ash, glass fines, fly ash... The second one is the VALDEM project, which aims to optimize buildings end of life management by developing new deconstruction, sorting and recycling processes. The goals are to produce uniform and accessible material flows, and then to increase up-cycling applications and valorization of CDW (funded by Interreg FWVL European Fund and the Walloon Region). It focuses its activities in North of France, Flanders and Walloon regions (Belgium), and stands out from usual approaches by its cross-border view of circular economy. It also strives to validate the solutions from technical, scientific, economic and environmental point of view. Besides these projects, we have used the results of another research project, CONREPAD (BEWARE fellowships), in which some VALDEM operators were involved (ULiège – GeMME, Prof. Luc Courard). The theme is the recycling of waste concrete blocks manufactured by the PREFER company (Belgium), and in particular the substitution of natural aggregates (NA) by crushed waste blocks as recycled concrete aggregates (RCA). The CONREPAD study determined that the integration of 30% of RCA did not alter the mechanical properties of the blocks and was therefore conceivable (B_RCA30 blocks). A comparative LCA is to made to evaluate the impact of the recycling process of the block waste, and to assess the influence of their integration in the making of the blocks in substitution of the NA, in comparison with to the "business as usual" process (NA only). The results do not show significant gain in any impact category because of the very low available amount of waste (1%), as the internal production of RCA added in B_RCA30 blocks can only substitute 3% of the global production of Prefer. An alternative scenario, based on the import of external RCA from a nearby CDW sorting site, shows however a potential gain in all categories, especially in the Land use category (up to 11.5%) if the total production of blocks consists of B_RCA30. In conclusion, globally and in a circular economy perspective, the substitution of NA with RCA from internal production waste blocks and external source of CDW, is an interesting development route to improve the environmental impact of the concrete blocks made by Prefer. [less ▲]

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See detailHormonal measurements in Endocrinology: cost-effectiveness studies
VALDES SOCIN, Hernan Gonzalo ULiege

Conference (2018, December 01)

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See detailLe point sur la prévention de blessures chez l'athlète de haut niveau
Delvaux, François ULiege

Conference (2018, December 01)

Detailed reference viewed: 29 (6 ULiège)
Peer Reviewed
See detailNo way and no chance as emphatic negative response items
Brems, Lieselotte ULiege; Van linden, An ULiege

Conference (2018, November 30)

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See detailVon der Obsoleszenz der Literatur zur Literatur der Obsoleszenz? Berkenheger, Gillies, Glaser
Dupont, Bruno ULiege

Conference (2018, November 30)

Detailed reference viewed: 23 (1 ULiège)
See detail(Dé-)territorialisation et identité en psychopathologie
Englebert, Jérôme ULiege

Conference (2018, November 30)

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See detailLa blockchain pour développer les échanges d'énergie "peer to peer": un exemple de l'autoconsommation collective
Vangulick, David ULiege

Conference (2018, November 30)

La blockchain est une technologie qui a déjà fait beaucoup couler d’encre. Après avoir écumé les marchés financiers, bon nombre d’observateurs pensent que c’est maintenant au tour du marché de l’énergie ... [more ▼]

La blockchain est une technologie qui a déjà fait beaucoup couler d’encre. Après avoir écumé les marchés financiers, bon nombre d’observateurs pensent que c’est maintenant au tour du marché de l’énergie. Une quantité impressionnante de chercheurs et de start-ups en tout genre se sont en tout cas lancés sur cette voie. De tous les cas d’usage possible, nous proposons d’analyser l’applicabilité et l’acceptabilité de la blockchain dans le cadre de l’échange d’énergie entre pairs (peer-to-peer energy exchange) [less ▲]

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See detailPlayer 2: Don't Press Start. "Secondary Players" and "In-Person" Game Spectatorship Practices
Delbouille, Julie ULiege

Conference (2018, November 30)

Since arcade gaming, video games are watched as much as they are played. Following the rise of live streaming, game spectatorship has become an increasingly popular topic in game studies. Drawing upon the ... [more ▼]

Since arcade gaming, video games are watched as much as they are played. Following the rise of live streaming, game spectatorship has become an increasingly popular topic in game studies. Drawing upon the firsts results of an ongoing field research, this paper aims to explore a specific form of game spectatorship: observing a physically present player control the game. Through the qualitative analysis of interviews and game sessions, it will try and determine how this particular practice reshapes our understanding of « fun » and « play », and how it challenges the role of interactivity for gameplay fun. [less ▲]

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See detailUn contre-imaginaire (de la mondialisation)
Delhalle, Nancy ULiege

Conference (2018, November 29)

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See detailThe Two Sartrean Theories of Personal Identity
Recchia, Fabio ULiege

Conference (2018, November 29)

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See detail(Ap)prendre la parole, composer avec les morts : autour de Michel de Certeau
Hagelstein, Maud ULiege; Janvier, Antoine ULiege

Conference (2018, November 27)

Le 16 prairial, an II de la République, l’abbé Grégoire défend devant la Convention nationale son rapport « sur la nécessité et les moyens d’anéantir les patois et d’universaliser l’usage de la langue ... [more ▼]

Le 16 prairial, an II de la République, l’abbé Grégoire défend devant la Convention nationale son rapport « sur la nécessité et les moyens d’anéantir les patois et d’universaliser l’usage de la langue française » (p. 331). 1793, c’est l’époque où, sous la Convention, les idiomes non-français du territoire national apparaissent non seulement comme de simples obstacles passifs qu’une traduction des décrets et des actes adminsitratifs et judiciaire pourrait surmonter, mais comme « le lieu d’une résistance propre qui diffuse la contre-révolution » (p. 12). Grégoire souhaite prolonger et parfaire la décision prise quelques mois plus tôt par la Convention, suivant un premier rapport du Comité de salut public sur les « idiomes étrangers » présenté par Barère et approuvé par la Convention le 8 pluviôse an II. Pour Barère, « le fédéralisme et la superstition parlent bas breton ; l’émigration et la haine de la République parlent l’allemand ; la contre-révolution parle l’italien et le fanatisme parle basque. » (p. 12-13). Ce constat fonde un programme. Le rapport de Barère préconise l’installation d’un instituteur de langue française dans chaque commune des départements où se parlaient alors un idiome étranger (les départements du Finistère, du Morbihan, des Côtés-du-Nord, des Basses Pyrénées, du Haut et du Bas Rhin, etc.), en définissait les modalités concrètes (modalité de nomination, de rémunération, etc.), et fixait la tâche qui serait la leur.La démonstration à laquelle Grégoire se livre alors joue sur plusieurs plans. Un plan politique d’abord. La connaissance d’une langue nationale permet au peuple de prendre connaissance des lois et rendent possible à la fois la sanction des lois et leur obéissance. L’orientation démocratique de Grégoire le conduit à situer le danger d’une ignorance de la langue nationale par les membres des couches populaires : soit ces ignorants occuperont les places du pouvoir, et feront des lois aux termes impropres et aux idées imprécises ; soit ils en seront exclus au motif même de leur ignorance, et « bientôt renaîtra cette aristocratie qui jadis employait le patois pour montrer son affabilité protectrice à ceux qu’on appelait insolemment les petites gens. » Alors « la société sera réinfectée de gens comme il faut ; la liberté des suffrages sera restreinte, les cabales seront plus faciles à nouer, plus difficiles à rompre, et, par le fait, entre deux classes séparées s’établira une sorte de hiérarchie. » Bref, l’ignorance de la langue « détruirait l’égalité » (p. 335). Un plan technico-économique ensuite. Le partage d’une même langue par l’ensemble de la population permet la bonne tenue et réalisation du commerce d’une part, et d’autre part, la diffusion des connaissances, en particulier des connaissances techniques, en matière agricole et artisanale. En ce sens la mise à disposition du plus grand nombre de livres utiles à la production, destinés à remplacer almanachs (voir 344) et opuscules gros d’idées superstitieuses et d’erreurs ancestrales, s’avère essentielle pour assurer la supériorité de la Nation de la liberté. Un plan idéologique enfin. La langue nationale n’est pas seulement la langue commune : c’est la langue de la Nation. Les idiomes dangereux sont ces idiomes féodaux présents « vers nos frontières », idiomes « communs », mais « communs aux peuples des limites opposées » et favorisant l’établissement « avec nos ennemis des relations dangereuses » . A l’inverse, ces idiomes apparemment innocents que sont les jargons et dialectes intérieurs « sont autant de barrières » à l’intérieur même de la Nation, qui « empêchent l’amalgame politique, et d’un seul peuple en font trente » : aussi éloignés sont-ils des langues de l’ennemi extérieur, par leur action négative, ils en sont in fine complices (p. 337). C’est sur cette base que Grégoire préconise d’accentuer un mouvement déjà à l’œuvre sous l’effet de la révolution : « partout ces dialectes se dégrossissent, se rapprochent de la langue nationale » (p. 342). Il s’agit désormais d’« accélérer la destruction des patois » par « quelques moyens moraux » (p. 343) : par exemple, de cesser la traduction des décrets en dialectes vulgaires et d’obliger toutes les municipalités à ne faire usage que du français, de répandre, grâce aux écrvains républicains, « non de gros livres […] mais une foule d’opuscules patriotiques, qui contiendront des notions simples et lumineuses » (p. 343), de constituer, avec les journalistes, « une sorte de magistrature d’opinion » (p. 344), de démultiplier les chansons et poésies lyriques en français, et si possibles qu’elles soient « historiques et instructives » (p. 345), ainsi que les spectacles donnés en langue nationale, enfin, de mettre en place « une police » de toutes ces erreurs et scories qui « outragent la grammaire », partie par une entreprise de correction systématique par exemple des noms de places, de rues, et de lieux publics, ou, autre exemple, des accents laissés dans l’usage oral de la langue par les jargons, partie par un appel aux sociétés populaires et aux clubs de province à abandonner l’usage de leur dialecte, partie, enfin, par l’accomplissement actif du français comme langue pleine, claire et riche (voir p. 349-350). Bref : c’est le projet « de révolutionner notre langue » que propose Grégoire à la Convention. [less ▲]

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See detailImagine Orient: a Military Procession by Jan Swart van Gronignen
Vankan, Gaylen ULiege

Conference (2018, November 24)

“Een deel Turcken te Peerde, met boghen en pilkokers, die seer aerdigh en gheestigh zijn”. These are the words used by Carel van Mander, in his famous Schilder-Boeck, to describe a remarkable series of ... [more ▼]

“Een deel Turcken te Peerde, met boghen en pilkokers, die seer aerdigh en gheestigh zijn”. These are the words used by Carel van Mander, in his famous Schilder-Boeck, to describe a remarkable series of woodcuts by Jan Swart van Groningen. This latter is composed of five self-sufficient sheets which put together form a military procession showing the Emperor Soliman I preceded and followed by Turkish, Mameluke, heathen and Arabish riders. This series is exceptional in many ways. Unlike most of the processions produced during the first half of the 16th century, this one didn’t commemorate any particular historical even, nor did it participate in propaganda through the use of images. Rather, it proves to be a pure artificial construction, guided by some « documentary » intentions, which partook of a popular taste for exoticism and oriental images. An interesting point is to consider how Jan Swart resorted to the same iconographic canons as those developed for example by Hans Burgkmair and Albrecht Aldorfer in their triumphal processions and equestrian portraits. Published in Antwerp by Willem Liefrinck in 1526, this series enjoyed a flourishing success in the Lowlands and far beyond, literally stamping its own imprint on the Northern European visual culture – the influence on Pieter Coecke’s Procession of Süleyman I will be considered. Largely spread in the Germanic Empire, these woodcuts were used as models by other artists, such as Daniel Hopfer and Melchior Lorsch (?), for their own Turkish processions. At a time when Christianity looked with apprehension at Turkish progress and supremacy, some personalities like Erhard Schön reinterpreted this series in order to nourish a strong anti-Turkish propaganda. [less ▲]

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See detailPRP and hyaluronic acid in tendinopathy
Kaux, Jean-François ULiege

Conference (2018, November 24)

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See detail“‘Gratia Lacrymarum’?’ From Trauma to Tears: Representations and Functions of Crying in Toni Morrison’s Home and God Help the Child”
Tine, François Dassise Kheyane ULiege

Conference (2018, November 24)

Abstract: Though Toni Morrison’s oeuvre has received a breadth of criticism, critics seem to disregard the representation of tears in her work. In this paper, I examine the metaphorical meanings and ... [more ▼]

Abstract: Though Toni Morrison’s oeuvre has received a breadth of criticism, critics seem to disregard the representation of tears in her work. In this paper, I examine the metaphorical meanings and functions of literary tears in Morrison’s The Bluest Eye, Home, and God Help the Child and argue that Morrison’s literary portrayal of crying is neither meant to thrill the reader nor to create sensation. Rather, Morrison invites readers to regard tears as the direct outcome and result of traumatic encounters and shameful life-threatening events her characters endure. Thus, this paper combines and seeks to bridge the gap between literary discussions of trauma (developed by Laurie Vickroy, J. Brooks Bouson etc.) and the theorization of “tear” in the field of psychology (Tom Lutz, William H. Frey, and Judith K. Nelson among many others). By featuring the characters’ tears in these novels, I explore how Toni Morrison renders the difficulties experienced by African Americans as they attempt to redefine and reconstruct their split identities in a land of deep racial animus. More significantly, in doing so, I contend that such representations of tears are fruitful tropes through which Morrison addresses issues of family dislocations, ruptured communities, and socioeconomic marginalization. In this paper, I aim to deconstruct received understanding of crying often associated with (female) weakness and idealized notions of crying as excessive and/or uncontrolled emotionality. Instead, in my talk, I attempt to conceptualize tears in Morrison’s works as means for self-awareness that can enable true spiritual growth. [less ▲]

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See detailL'année 1968 au prisme de la famille chrétienne.
Verjans, Pierre ULiege

Conference (2018, November 23)

En 1968, le monde chrétien applique les décisions du concile Vatican II et fait face aux effets de l'encyclique Humanae vitae. D'une façon globale, il s'agit d'une contestation globale de l'autorité, y ... [more ▼]

En 1968, le monde chrétien applique les décisions du concile Vatican II et fait face aux effets de l'encyclique Humanae vitae. D'une façon globale, il s'agit d'une contestation globale de l'autorité, y compris pontificale. [less ▲]

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See detailAnalyse du vécu des situations de multimorbidité : Malades – Soignants – Aidants proches
Vanmeerbeek, Marc ULiege; Ketterer, Frédéric ULiege

Conference (2018, November 23)

Contexte Sur les 230.000 habitants de l’agglomération XXX, environ 53.000 souffrent d’au moins deux maladies chroniques. Un projet pilote fédéral en faveur des maladies chroniques a donné l’opportunité ... [more ▼]

Contexte Sur les 230.000 habitants de l’agglomération XXX, environ 53.000 souffrent d’au moins deux maladies chroniques. Un projet pilote fédéral en faveur des maladies chroniques a donné l’opportunité d’investiguer différents aspects de leur gestion en soins premiers, dans le contexte d’augmentation de prévalence et de contingentement des coûts. Le point de vue des intéressés est mal connu. Objectif L'étude s'est intéressée au vécu des situations de multimorbidité, vues par les malades, leurs aidants et leurs soignants. Méthode Entretiens semi-structurés individuels avec des malades, recrutés via leur MG, des aidants et des soignants, désignés par les malades. L’analyse thématique a été réalisée par 2 chercheurs. Résultats 8 malades > 50 ans (4H, 4F), 7 aidantes (4 filles, 2 épouses, 1 amie), 6 MG et 2 kinés ont été interrogés. Résultat principal : pour les malades et les aidants, la multimorbidité est une expérience sociale, inscrite dans le temps, ayant un impact progressif sur les possibilités de vie. L’expertise profane des aidants devrait être mieux appréhendée par les soignants. L’expérience de la maladie et le statut de malade chronique différaient d’un malade à l’autre et dans le temps : tous ne se reconnaissent pas dans le diagnostic et les comportements attendus par les soignants ou les aidants. Les malades développaient leurs propres stratégies de maintien de l’autonomie face aux professionnels. Leurs ressources étaient inégales. Le statut des aidants proches était parfois difficile à assumer, en termes de gestion du temps et de charge émotionnelle. Outre le soutien matériel et moral, ils exerçaient une forme de contrôle du respect du statut de malade, modulé par les relations préexistantes avec le malade. L’articulation aidants/soignants était variable : complémentaire et reconnue, dans une relation durable ; parfois absente, résultant d’un centrage biomédical des soignants ; mise en concurrence, par le patient (préférait son aidant pour certaines tâches), ou par l’aidant (se sentait plus pertinent que les professionnels). Discussion Ces 23 entretiens ont permis de croiser les regards de malades, d’aidants et de professionnels autour de situations communes, vécues très différemment. La collaboration aidant/professionnels gagnerait à être améliorée. Les chercheurs ont initié une procédure par recherche de consensus pour dégager des voies d’amélioration. [less ▲]

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See detailThe Smell of Modernism
Delville, Michel ULiege

Conference (2018, November 22)

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See detailEarly eukaryote Paleobiology and Evolution
Javaux, Emmanuelle ULiege

Conference (2018, November 21)

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See detailEncapsulation de protéines par procédé sol-gel pour l’application en reconstruction osseuse
Tilkin, Rémi ULiege; Regibeau, Nicolas ULiege; Grandfils, Christian ULiege et al

Conference (2018, November 21)

Ces dernières années, l’ingénierie tissulaire est devenue une des techniques les plus prometteuse pour le maintien et la reconstruction de tissus humains, voire même d’organes entiers. Cette solution est ... [more ▼]

Ces dernières années, l’ingénierie tissulaire est devenue une des techniques les plus prometteuse pour le maintien et la reconstruction de tissus humains, voire même d’organes entiers. Cette solution est fréquemment basée sur la réalisation de matrices poreuses, appelées « scaffolds ». De nombreux matériaux ont été proposés pour la conception de scaffolds, comme les biocéramiques (e.g. hydroxyapatite, β-tricalcium phosphate). Cependant, de nombreuses études ont montré que un manque de propriétés d'ostéoinduction, d’ostéogenèse et d’ostéointégrité. Cette étude vise à ajuster les propriétés de surface de biocéramiques par l’ajout d’un revêtement sol-gel de silice dans lequel seront encapsulées des protéines. Dans cette optique, l’étude de l’influence des paramètres d’encapsulation sur la cinétique de libération des protéines est une étape cruciale. L’encapsulation d’une protéine modèle (Soybean Trypsin Inhibitor) a été étudiée via deux méthodes : (1) l'imprégnation de gels de silice préalablement synthétisés, par une solution de protéine : méthode ex situ, (2) l'incorporation de la protéine lors de la synthèse du gel de silice : méthode in situ. Pour la méthode ex situ, le tétraéthylorthosilicate (TEOS) a été utilisé comme précurseur principal de la silice et le 3-(2-aminoéthylamino)propyltriméthoxysilane (EDAS) comme agent nucléant en milieu alcoolique et à pH basique. Les gels formés ont ensuite été séchés et/ou calcinés à différentes températures. Le type de traitement et la durée d'imprégnation ont été étudiés. Pour la méthode in situ, le tétraméthylorthosicilate (TMOS) a servi de précurseur au gel de silice après hydrolyse en pH acide. Les propriétés texturales des gels de silice ont été caractérisées par adsorption-désorption d'azote et porosimétrie au mercure. La cinétique de libération de la protéine a été analysée in vitro sur une durée de 4 semaines. Les résultats de porosimétrie au mercure et d’adsorption-désorption d’azote montrent que les gels ex situ présentent une structure poreuse en forme d'entonnoir (micro, méso et macropores) tandis que le gel in situ présente une structure microporeuse. Concernant la méthode ex-situ, les résultats montrent un « burst » après seulement 24 h suivi de l’établissement d’un plateau. Le pourcentage de protéine libérée après 7 jours d’incubation augmente lorsque la quantité de groupements aminés présents dans la silice diminue (i.e. augmentation de la température de calcination). L’effet du temps d’imprégnation ne se marque que dans le cas des gels contenant des fonctions amines avec une augmentation de la quantité de protéines absorbées avec le temps d’imprégnation. Pour la méthode in situ, un « burst » plus faible a été observé durant les premières 24 h, suivi par une libération continue de la protéine sur une période de 7 jours. Tilkin Rémi et Régibeau Nicolas bénéficie d’une bourse FRIA octroyée par le F.R.S.-FNRS. S. D. Lambert remercie également le FRS-FNRS pour sa position de Maître de Recherches. [less ▲]

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See detailComparing Oblivious and Robust Routing Approaches
Cuvelier, Thibaut ULiege; Gourdin, Éric

Conference (2018, November 21)

Network routing is an already well-studied problem: the routers in the network know which path a packet must follow in order to reach its destination. Traffic engineering attempts to tune the routing to ... [more ▼]

Network routing is an already well-studied problem: the routers in the network know which path a packet must follow in order to reach its destination. Traffic engineering attempts to tune the routing to meet some requirements, such as avoiding congestion or a reducing end-to-end delays. Several approaches have been devised to perform these adaptations, but only few of them deal with the uncertainty in some parameters. Mostly, the uncertainty lies in the demand, the total amount of traffic that goes through the network; however, links and nodes may also fail. Robust routing approaches have been proposed to tackle this issue: indeed, they consider that traffic matrices are not know precisely but that they lie in an uncertainty space that can be analytically described [1]. Oblivious routing is the extreme case where the uncertainty space is the whole set of possible traffic matrices and the prescribed routing must be as close as p ossible to the optimum routing, whatever traffic matrix effectively occurs. It has been proved that oblivious routing achieves a polylogarithmic competitive ratio with respect to congestion [2]. Several variants of robust or oblivious routing approaches will be considered and compared on series of realistic instances, some of which are based on Orange network topologies. Future works include dealing with other sources of uncertainty (for instance, survivability to failures [3]) within a common robustness framework. [1] Sözüer, S., and Thiele, A. C. (2016). The State of Robust Optimization. In Robustness Analysis in Decision Aiding, Optimization, and Analytics. [2] Räcke, H. (2002). Minimizing congestion in general networks. In Foundations of Computer Science, 2002. [3] Li, L., Buddhikot, M. M., Chekuri, C., and Guo, K. (2005). Routing bandwidth guaranteed paths with local restoration in label switched networks. IEEE Journal on Selected Areas in Communications, 23(2), 437-449. [less ▲]

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See detailTESTS FOR DEFINING A STANDARDISED UNIFORMLY DISTRIBUTED FUEL ARRANGEMENT
Gamba, Antonio ULiege; Franssen, Jean-Marc ULiege

Conference (2018, November 20)

This Powepoint presentation gives the main features of the results obtained by ULiege for experimental tests of fire propagation in uniformly distributed cellulosic fire load.

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See detailEasy-cleaning and photocatalytic materials
Mahy, Julien ULiege; léonard, Géraldine; Zubiaur, Anthony ULiege et al

Conference (2018, November 20)

Dans ce travail, un procédé sol-gel en phase aqueuse a été développé pour produire à grande échelle un photocatalyseur à base de TiO2 présentant des propriétés hydrophiles et une activité photocatalytique ... [more ▼]

Dans ce travail, un procédé sol-gel en phase aqueuse a été développé pour produire à grande échelle un photocatalyseur à base de TiO2 présentant des propriétés hydrophiles et une activité photocatalytique élevée pour la dépollution de l'eau et de l'air. La première étape consistait à développer une synthèse sol-gel en phase aqueuse de TiO2 pur à l'échelle du laboratoire. Le protocole de synthèse a été simplifié pour réduire le temps de synthèse, la température et le nombre d’étapes comme les étapes de lavage. Les propriétés physico-chimiques et photocatalytiques du matériau obtenu ont été caractérisées pour évaluer la production d'un revêtement hydrophile sur acier inoxydable et la formation d'un photocatalyseur efficace sur la dégradation de trois polluants (bleu de méthylène, p-nitrophénol ou acétaldéhyde) sous différentes formes (film ou poudre) et dans différentes phases (liquide ou gazeuse). Dans la deuxième partie, la synthèse aqueuse a été adaptée pour produire des catalyseurs de TiO2 dopés avec des ions Fe3+, Ag+, Cu2+, Zn2+, Cr3+, Al3+, Mn2+ et Co2+ et des nanoparticules métalliques de Pt afin d'améliorer leur activité. Certains dopants ont montré une photoactivité accrue et certains mécanismes ont été proposés pour expliquer ces modifications de l'activité avec le dopage. En outre, la comparaison des coûts à l'échelle du laboratoire a montré que le dopage au Zn2+ pouvait être envisagé pour des applications industrielles. En utilisant cette méthode, un photocatalyseur de TiO2 dopé au Zn a été synthétisé à grande échelle et a montré des propriétés homologues au produit à l'échelle du laboratoire. La troisième étape consistait à étudier la propriété de redispersion des colloïdes de TiO2 nanocristallins. En effet, les poudres obtenues par séchage sous air de ces colloïdes peuvent être redispersées dans l'eau pour produire des colloïdes qui sont comparés à ceux obtenus initialement. Cinq cycles de séchage-redispersion ont été réalisés sur des colloïdes sélectionnés. Un mécanisme a été proposé pour expliquer cette propriété intéressante, l'acide présent dans la synthèse semble être le facteur principal. Cela peut être très utile pour une application industrielle de cette synthèse permettant de réduire le volume et le poids pour le transport et le stockage. [less ▲]

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See detailForced Displacement and Its Traumatic Effects in Toni Morrison's Home and A Mercy
Tine, François Dassise Kheyane ULiege

Conference (2018, November 17)

Abstract Title: Forced Displacement and Its Traumatic Effects in Toni Morrison’s Home and A Mercy In my talk, I explore how Morrison’s A Mercy and Home revisit the theme of mother-daughter relationship as ... [more ▼]

Abstract Title: Forced Displacement and Its Traumatic Effects in Toni Morrison’s Home and A Mercy In my talk, I explore how Morrison’s A Mercy and Home revisit the theme of mother-daughter relationship as well as issues of homelessness and traumatic displacements. I will begin my talk by demonstrating how Morrison underscores African Americans’ objectification and addresses the legacies of traumatic displacements because of racist practices and slavery. In Home, I explore how Morrison portrays the difficulties experienced by African Americans as they attempt to re-envision and reconstruct the concept of home in a land of deep racial animus. Because of Jim Crow practices in the American South that give rise to everyday indignities, brutal violence, and traumatic displacements, the correlation with home and the South is only a vague promise for many black Americans. Using postcolonial and trauma theories (Homi K. Bhabha, Kelly Oliver, J. Brooks Bouson and Evelyn Jaffe Schreiber) I attempt to show how mobility is used to address issues of family dislocations, motherlessness, ruptured communities, and socioeconomic marginalization. By featuring Frank Money’s and Florens’s displacements, I argue that home must be regarded as an imagined ideal that enables healing and self-validation. Central to this is the deconstruction of idealized notions of manhood and feminine subjectivity that impede self-awareness and true spiritual growth. [less ▲]

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See detailMenander: A Metatheatrical Theatre?
Vandersmissen, Marc ULiege

Conference (2018, November 17)

The concept of metatheatre, defined by N. Slater as « theatrically self-conscious theatre, i.e., theatre that demonstrates an awareness of its own theatricality » , is outstanding for the study of ancient ... [more ▼]

The concept of metatheatre, defined by N. Slater as « theatrically self-conscious theatre, i.e., theatre that demonstrates an awareness of its own theatricality » , is outstanding for the study of ancient theatre, both Greek and Roman. It makes possible to raise many questions and to better understand the textual links between the stage and the audience . However, the researchers have often opposed the general dramatic action stricto sensu and the metatheatrical speeches, more limited in the plays. In this paper, I would like to demonstrate that the Menander’s theatre, as a whole, is metatheatrical and that the public is entirely part of the dramatic illusion: for the author, the point would not be to propose a universe dissociated from the spectators. There wouldn’t be a border between the tiers and the stage made visible for a short while by specific lines (passive assistance vs actives comedians). Menander would rather aim at creating a fictional space including actors and spectators connected continuously together by a set of interdependent links. By this way, Menander would take all the participants of the show from the extratheatricality to the intratheatricality. These conditions would generate a homogenous group united, during the time of the performance, by its awareness of the theatrical norms. [less ▲]

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See detailMeasuring NPOs’ Online Disclosure: Development of a Scale
Dethier, Fanny ULiege

Conference (2018, November 17)

This study develops a reflective online disclosure scale, following the recommended methodological steps and precautions of a scale development process. This new scale brings clarity among existing ... [more ▼]

This study develops a reflective online disclosure scale, following the recommended methodological steps and precautions of a scale development process. This new scale brings clarity among existing measurement tools of web NPOs’ transparency and disclosure. The scale results from an exploratory factor analysis applied on a database collected from the websites of 216 organizations collaborating with Donorinfo, a foundation working for the transparency of the Belgian philanthropic sector. Normative judgements from field experts support this exploratory phase. The scale is purified thanks to a confirmatory factor analysis applied on a database related to a random sample of Belgian NPOs, comparable to the Donorinfo sample. Consultation of real donors’ opinion validate the proposed scale. As a result, the paper provides a reliable and valid online disclosure scale, a measurement tool to approach private donors’ perception of transparency. [less ▲]

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See detailLangage et communication dans le syndrome du X-Fragile
Comblain, Annick ULiege

Conference (2018, November 16)

Le Syndrome du X-Fragile (SFX) renvoie à une famille de problèmes médicaux et développementaux liés à une réplication de la portion Xq27.3 du chromosome X. Le syndrome est caractérisé par un profil ... [more ▼]

Le Syndrome du X-Fragile (SFX) renvoie à une famille de problèmes médicaux et développementaux liés à une réplication de la portion Xq27.3 du chromosome X. Le syndrome est caractérisé par un profil langagier et communicationnel typique influencé, notamment, par des particularités cognitives et comportementales (dont de fréquent traits autistiques). La description précise de la trajectoire développementale du langage et de la communication constitue un enjeu clinique majeur pour la prise en charge adaptée de ces personnes. [less ▲]

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See detailA way to extend the Pascal triangle to words
Stipulanti, Manon ULiege

Conference (2018, November 16)

The Pascal triangle and the corresponding Sierpinski gasket are well-studied objects. They exhibit self-similarity features and have connections with dynamical systems, cellular automata, number theory ... [more ▼]

The Pascal triangle and the corresponding Sierpinski gasket are well-studied objects. They exhibit self-similarity features and have connections with dynamical systems, cellular automata, number theory and automatic sequences in combinatorics on words. In this talk, I will first recall the well-known link between those two objects. Then I will exploit it to define Pascal-like triangles associated with different numeration systems, and their analogues of the Sierpinski gasket. This a work in collaboration with Julien Leroy and Michel Rigo (University of Liège, Belgium). [less ▲]

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See detailL’enseignement de l’évaluation : les défis et l’évolution
Detroz, Pascal ULiege

Conference (2018, November 16)

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Peer Reviewed
See detailVulnérabilité territoriale et schizophrénie
Englebert, Jérôme ULiege

Conference (2018, November 16)

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See detailIntégrer un nouveau système de gestion, défis et opportunités. L'expérience du passage à Alma et Primo dans les bibliothèques de l'Université de Liège
Renaville, François ULiege; Luciani, Sandra ULiege; Prosmans, Fabienne ULiege et al

Conference (2018, November 15)

Overview of new library services and workflows deployed with Alma.

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See detailÉvaluation de la capacité à travailler en groupe : Impacts de deux dispositifs d’évaluation par les pairs
Colaux, Catherine ULiege; Brostaux, Yves ULiege; Detroz, Pascal ULiege

Conference (2018, November 15)

Évaluation de la capacité à travailler en groupe : Impacts de deux dispositifs d’évaluation par les pairs La capacité à travailler en groupe joue un rôle majeur dans le métier d’ingénieur (CTI, 2016). Á ... [more ▼]

Évaluation de la capacité à travailler en groupe : Impacts de deux dispositifs d’évaluation par les pairs La capacité à travailler en groupe joue un rôle majeur dans le métier d’ingénieur (CTI, 2016). Á Gembloux Agro Bio Tech, nos étudiants sont amenés, dès leur première année, à travailler par groupes de 6 supervisés par un tuteur. Si l’enseignement basé sur la coopération est souvent qualifié de performant (Johnson, & Johnson, 2005), il est également connu pour ses difficultés liées à l'évaluation (King et Behnke, 2005). Classiquement, deux grandes méthodes se dégagent : L’évaluation par l’enseignant où une note globale et unique est attribuée au groupe (King et Behke, 2005). Ce système peut parfois générer un sentiment d’injustice chez les étudiants (Mentzer et al., 2016). L’évaluation par les pairs attribue une note individuelle calculée à partir des appréciations des pairs. Celle-ci peut toutefois favoriser l’inflation des notes attribuées aux amis, les collusions entre étudiants, l’effet de tendance centrale et l’influence des leaders (Kozanitis, 2005). Conformément à ce que recommande le plus souvent la littérature, notre dispositif d’évaluation utilise simultanément ces deux méthodes. La pondération est conforme à ce que Stevens (2007) propose, à savoir 80 % pour la note de l’enseignant et 20 % la note des pairs. Dans le cadre de cette étude, deux systèmes d’évaluation par les pairs ont été testés. Le premier repose sur une grille d’évaluation descriptive holistique. Chacun des indicateurs est décrit et associé explicitement à un score sur 10. Le second repose sur une grille d’évaluation analytique à 7 critères (engagement, délais, attitude, collaboration, Feedback, qualité du travail), sans qu’un score apparent soit associé aux indicateurs proposés. Lors de cette communication, nous évaluerons l’impact de ces deux systèmes sur la capacité des étudiants à s’autoévaluer mais aussi sur les difficultés rencontrées pour évaluer leurs pairs. Nous nous baserons sur les résultats d'une enquête soumise aux étudiants et sur une analyse de leurs évaluations. [less ▲]

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See detailBruegel et l'art du double sens
Allart, Dominique ULiege

Conference (2018, November 14)

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See detailPhysiological and behavioural responses to habitat fragmentation by black lion tamarins
Kaisin, Olivier ULiege; Culot, Laurence ULiege; Poncin, Pascal ULiege et al

Conference (2018, November 13)

Habitat fragmentation is one of the major threats hanging over primate populations in South America. Before affecting primates at a population level, environmental perturbations affect the physiology of ... [more ▼]

Habitat fragmentation is one of the major threats hanging over primate populations in South America. Before affecting primates at a population level, environmental perturbations affect the physiology of the individuals. Glucocorticoids (GCs), often referred to as stress hormones, are metabolic hormones which mediate the energetic demands needed to overcome predictable and unpredictable environmental and social challenges. These physiological biomarkers play a key role in enabling individuals to respond to stressors and restore physiological homeostasis. How primates adapt to habitat fragmentation pressures remains poorly understood. The aim of this research is to investigate the physiological and behavioural responses of the endangered black lion tamarins (Leontopithecus chrysopygus) living in the Brazilian Atlantic Forest, a habitat particularly affected by fragmentation. The three specific objectives of this research are: (1) reviewing the effect of anthropogenic habitat disturbance on the well-being of primates, (2) analysing variation in chronic stress of tamarins in different forest fragment quality, and (3) relating transient stress levels to behavioural patterns. The first objective will consist of an extensive bibliographic research to identify how habitat disturbance variables affect primate well-being. Regarding physiological markers, we will use two different matrixes to measure GC concentrations. First, GC levels in hair samples (hair cortisol concentrations-HCC) will provide us with information on long term adrenocortical activity, recounting the animal’s chronic stress levels. Second, faecal GC levels will inform us about short term exposure to stress unfolding the animal’s daily fluctuations. Consequently, to approach the second objective, we will compare habitat quality with the HCCs of six tamarin groups living in fragments of different quality. For the third objective, we will compare faecal GC levels with behaviour patterns collected during daily follow-ups of three tamarin groups. This project will be conducted as a joint-PhD between ULiège and the Sao Paulo State University (Brazil). Evaluating stress levels in primate populations living in fragmented landscapes can shed light on how primates respond to such habitat perturbations and how significant it is for their survival. [less ▲]

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See detailPros and cons of primate sterilization in anthropogenic habitats: A study case of Balinese macaques
Brotcorne, Fany ULiege; Giraud, Gwennan ULiege; Broens, Damien ULiege et al

Conference (2018, November 13)

Worldwide, primates and humans are increasingly forced to share space, and often enter in conflict when primates proliferate in anthropogenic environments. Although many primate species are concerned, the ... [more ▼]

Worldwide, primates and humans are increasingly forced to share space, and often enter in conflict when primates proliferate in anthropogenic environments. Although many primate species are concerned, the genus Macaca exhibits one of the highest degrees of spatial overlap with humans. Reproductive control is increasingly used to limit population growth as an ethical alternative to culling and translocation. However, the impact of birth control on free-ranging primates remains a neglected area of research, especially when it comes to those using tubectomy. Therefore, the efficiency and implications of such programs requires a careful examination. Our research aims to investigate the demographical, behavioral and social responses of wild female long-tailed macaques (Macaca fascicularis) included in a tubectomy sterilization program in Ubud, Bali. Rationales for choosing the surgical approach of endoscopic tubectomy are: targeting philopatric females, effective and permanent technique which limits multiple captures, less invasive and maintaining intact the sex steroid hormone secretion contrary to ovariectomy. To solve the challenging issue of capture in free-ranging settings, we choose giant trapping cages in order to achieve a high number of captures while minimizing stress and discomfort for the macaques. The specific objective of the program is to stop the exponential growth of the population, while preserving its longterm survival and viability. Therefore, based on stage-structured matrix population models, it has been modeled that 52% of the adult females have to be sterilized to reach this objective. So far, we conducted two sterilization campaigns including 42 adult females sterilized without any postop complications. Captures with trapping cages were successful and showed no negative impacts as macaques re-used the cages very quickly. The ethological monitoring of sterilized females revealed that, compared to control females, they were more active and engaged in sexual interactions with males, probably because they are experiencing repeated non-conceptive ovarian cycles. However, they did not show higher proportion of stress-related behaviours or alloparental behaviours. We are pursuing this study in order to assess any long-term impact of tubectomy such as a disturbance of the female social position and of the group cohesion. [less ▲]

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See detail"Chant et comportement agressifs du groupe coolooji : un mode d’identification chez les haalpulaar’en de Djéwol (Mauritanie) ?"
Sow, Aboubakry ULiege

Conference (2018, November 12)

Il existe dans la communauté haalpulaar du village de Djéwol (Mauritanie) un groupe marginal nommé coolooji (sing. coolo, contestataires sociaux) qui excelle par ses comportements excessifs. Ces derniers ... [more ▼]

Il existe dans la communauté haalpulaar du village de Djéwol (Mauritanie) un groupe marginal nommé coolooji (sing. coolo, contestataires sociaux) qui excelle par ses comportements excessifs. Ces derniers sont sources de méfiance et de mépris de la part de certains villageois, mais également de complicité et d’admiration par d’autres en raison de leurs véritables talents de chanteurs, même si le caractère agressif de leurs chants est souvent source de tensions et de conflits. Dans ma communication, je propose d’analyser les chants et le comportement agressifs du groupe marginal des coolooji. Je m’intéresserai à deux groupes de coolo opérant dans deux registres différents leur cooloyagal (fonction du coolo). Il s'agit du cupurta (plur. cupurteeɓe, maître coolo qui ne se réfère qu'aux traditions anciennes) et d’almuudo ngay (plur. Almuɓɓe ngay, ancien étudiant du Coran, mais ne respectant plus les règles de la religion). Je tenterai alors de montrer comment ces deux personnages, en contestant les normes et valeurs sociales qui prédominent au sein de la communauté haalpulaar et musulmane du village de Djéwol, arrivent à créer des situations inédites de conflits dont ils tirent largement profit. Je mobiliserai plus particulièrement deux types de chants utilisés par les coolooji à savoir : les chants de ƴattoore (injures), et des chants de njennor (médisances) pour montrer que le caractère agressif de ces chants ne laisse aucun villageois indifférent. [less ▲]

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See detailThematic Approaches: the exemple of Bone metabolism
Cavalier, Etienne ULiege

Conference (2018, November 11)

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Peer Reviewed
See detailEthos et systèmes psychiatriques : Pour une reconsidération des inadaptations
Englebert, Jérôme ULiege

Conference (2018, November 10)

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Peer Reviewed
See detailAtelier: Cordectomie - la prise en charge post opératoire
Morsomme, Dominique ULiege

Conference (2018, November 10)

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See detailTranssexual Voice Questionnaire for Transwomen Traduction - Adaptation - Validation en français
Morsomme, Dominique ULiege; Revis, Joana; Thomas, Elisabeth

Conference (2018, November 09)

Objectifs : Les femmes transgenres consultent le département ORL dans le but de féminiser leur voix. Leur prise en charge débute toujours par un bilan vocal peu adapté puisque initialement construit pour ... [more ▼]

Objectifs : Les femmes transgenres consultent le département ORL dans le but de féminiser leur voix. Leur prise en charge débute toujours par un bilan vocal peu adapté puisque initialement construit pour des patients dysphoniques. Cette étude s’intéresse à la partie subjective du bilan et plus spécifiquement au questionnaire d’auto-évaluation. En langue française, nous ne disposons pas de questionnaire permettant de recueillir les plaintes des personnes en recherche de féminité vocale et de quantifier l’impact du « trouble » vocal sur leur quotidien. Matériel et méthode : Nous proposons une traduction et une adaptation en langue française du questionnaire élaboré par Dacakis et al en 2013. Ce travail respecte les recommandations de l’OMS en matière de traduction. Trente-six participantes transgenres belges et françaises ont contribué à cette étude. Résultats : les mesures de fidélité et de fiabilité sont excellentes, les mesures de validité critérielle montrent que 85,19% des idées exprimées par les participantes corrèlent avec 6 domaines de préoccupations des personnes transgenres établis par Dacakis et Davies à savoir l’impact de la voix sur les interactions sociales et sur les émotions, la relation entre la voix et l’identité́ de genre, l’effort et la concentration nécessaires pour produire la voix désirée, les aspects physiques liés à la production de la voix et la hauteur tonale. De même les items du questionnaire concernent les préoccupations des participantes. La validité concurrente n’a pu être mesurée faute de récits suffisamment détaillés et riches. Conclusion : les propriétés psychométriques de la version française du questionnaire sont satisfaisantes. Le questionnaire en l’état est utilisable en clinique journalière. [less ▲]

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See detailBeyond the British Invasion : Uncanny Spatiality and Critical Expert Selection as Markers of Vertigo's Poetics
Dony, Christophe ULiege

Conference (2018, November 09)

When it launched its platform in 1993, Vertigo did much more than simply gather comics series scripted by British writers, it actually carried out an important expert creative and critical act. By ... [more ▼]

When it launched its platform in 1993, Vertigo did much more than simply gather comics series scripted by British writers, it actually carried out an important expert creative and critical act. By selecting specific titles and repatriating them to a new publishing space, Vertigo performed a critical ‘re-reading’ of the disturbing poetics of displacement and crossing over that underlie Swamp Thing, Animal Man, Hellblazer, Shade the Changing Man, Sandman, and Doom Patrol. In fact, the migration of these titles to the Vertigo imprint ‘doubled’ and, in a way, revised these series’ uncanny treatment of spatiality in its widest sense, that is how these narratives destabilize or disorient readers and characters alike by mixing various fictional worlds or diegetic and textual realities whose spatial and temporal dimensions are intertwined and porous. The imprint has championed this particular poetics of uncanny spatiality in extradiegetic materials and promotional artwork, especially in the 1990s. This paper examines the resonance of this poetics in some of the imprint’s early editorial discourses and promotional artwork. It argues that uncanny spatiality has functioned as foundational pillar in Vertigo’s desire to present itself as critical expert selector in the American comics field. In so doing, this paper calls into question the relevance of the British Invasion narrative to explain the emergence and popularity of the imprint; the British Invasion is undoubtedly part of the Vertigo story, but there is much more that can explain Vertigo’s success and game-changer status in the industry. [less ▲]

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See detailFéminiser la voix
Morsomme, Dominique ULiege

Conference (2018, November 09)

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Peer Reviewed
See detailDe l’intérêt du Speech Range Profile (SRP) dans le bilan vocal : aspects méthodologiques
Blanckaert, Ellen ULiege; Pillot-Loiseau, Claire; Morsomme, Dominique ULiege

Conference (2018, November 09)

Objectifs : A l’instar du phonétogramme élaboré sur une voyelle tenue, le SRP consiste en une représentation graphique de même ordre élaborée à partir de la parole continue. Cette démarche, bien que plus ... [more ▼]

Objectifs : A l’instar du phonétogramme élaboré sur une voyelle tenue, le SRP consiste en une représentation graphique de même ordre élaborée à partir de la parole continue. Cette démarche, bien que plus écologique que le phonétogramme, fait l’objet d’une importante hétérogénéité quant aux cibles utilisées. Notre objectif est par conséquent de les comparer d’un point de vue prosodique afin d’identifier celles qui sont les plus représentatives des intonations de la langue française et de définir un protocole standardisé d’évaluation du SRP. Outre cela, le bilan vocal limitant généralement l’appréciation des aspects prosodiques de la parole à un jugement perceptif réalisé par le clinicien, nous en abordons l’évaluation de manière objective afin que le profil prosodique ainsi généré puisse, à terme, être intégré à l’analyse du comportement vocal. Matériel et méthode : La méthodologie est abordée via l’étude d’un jeune adulte normophonique, non professionnel de la voix. Nous recourons à Praat afin de représenter et quantifier le SRP, et à Prosogram afin d’identifier les patterns intonatifs et d’élaborer le profil prosodique. Résultats et discussion : Nos observations montrent d’emblée que le SRP est nettement influencé par la nature des cibles produites et que des patterns intonatifs diversifiés engendrent un SRP plus étendu. L’ambitus fréquentiel mobilisé par une tâche de comptage (NP-573-TB) s’avère dès lors inférieur (7 demi-tons) à celui généré par la lecture d’un texte (11 demi-tons). Ces résultats doivent cependant être éprouvés auprès d’une plus vaste population. Conclusion : L’intérêt de notre démarche est d’accroître l’écologie du bilan vocal tout en lui adjoignant une composante perceptive. A terme, SRP et profil prosodique pourraient également contribuer à l’évaluation de l’efficacité thérapeutique et s’avérer particulièrement pertinents lors de l’évaluation et de la prise en charge des patients en réassignation de genre. [less ▲]

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See detailL’influence de la qualité vocale du locuteur et du bruit de fond sur la compréhension du langage oral chez les enfants
Schiller, Isabel ULiege; Morsomme, Dominique ULiege; Kob, Malte et al

Conference (2018, November 09)

Objectif – Cette étude investigue les effets isolés et combinés d’une voix dysphonique et du bruit de fond sur la compréhension d’enfants âgés de cinq à six ans. Matériels et méthodes – 53 enfants de ... [more ▼]

Objectif – Cette étude investigue les effets isolés et combinés d’une voix dysphonique et du bruit de fond sur la compréhension d’enfants âgés de cinq à six ans. Matériels et méthodes – 53 enfants de première année primaire ont participé à deux tâches d’écoute : la première consistait en une tâche de discrimination de paires minimales pour estimer les capacités phonologiques des enfants et la deuxième une tâche d’assignation d’image afin d’évaluer leur compréhension morphosyntaxique. Pour ces deux tâches, les stimuli ont été présentés dans quatre conditions : (1) voix normale et sans bruit de fond, (2) voix dysphonique et sans bruit de fond, (3) voix normale et bruit de fond, et (4) voix dysphonique et bruit de fond. Résultats – Indépendamment de la tâche, les enfants obtiennent des scores significativement plus faibles lorsque les stimuli sont présentés dans la condition combinée voix dysphonique et présence de bruit de fond. La présence d’un seul facteur (soit la voix dysphonique, soit le bruit de fond) diminue les scores uniquement à la tâche de discrimination. Discussion – Les résultats suggèrent que les enfants sont sensibles aux effets que provoque une voix dysphonique cumulée à la présence de bruit de fond. Le fait que le message soit masqué par le bruit de fond et perturbé par la voix dysphonique influence potentiellement la manière dont les enfants traitent l’information linguistique. Leurs ressources cognitives pourraient ainsi être partiellement détournées en faveur du traitement de la perturbation du signal. Conclusion – Pour accéder à la compréhension du langage oral, les enfants doivent bénéficier d’un contexte d’écoute de qualité. Nos résultats soulignent la nécessité d’identifier les conditions optimales d’enseignement afin d’améliorer la transmission du signal vocal et de réduire le bruit de fond. [less ▲]

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See detailApport du biofeedback dans l’augmentation de la fréquence fondamentale en féminisation vocale
Remacle, Angélique ULiege; Morsomme, Dominique ULiege

Conference (2018, November 09)

Objectifs Le Biofeedback (BF) informe en temps réel un individu sur le fonctionnement de son organisme, et ce via un capteur mesurant une activité physiologique. En phoniatrie, le BF peut, par exemple ... [more ▼]

Objectifs Le Biofeedback (BF) informe en temps réel un individu sur le fonctionnement de son organisme, et ce via un capteur mesurant une activité physiologique. En phoniatrie, le BF peut, par exemple, rendre compte d’un comportement moteur vocal inadéquat et amener le patient à le modifier. Chez une femme transgenre en recherche de féminité vocale, adopter un pattern fréquentiel plus élevé participe à une production jugée comme plus féminine. Cette étude vise à évaluer l’apport du BF dans l’acquisition d’un pattern fréquentiel plus élevé. Matériels et méthodes Design : étude de cas. Une femme transgenre a respecté les différents temps du protocole suivant : T1) évaluation, T2) trois séances logopédiques réparties sur 2 semaines, T3) évaluation, T4) deux semaines de BF continu encadré par un accompagnement du thérapeute, T5) évaluation. Le BF programmé sur le dosimètre VoxLog a délivré une alerte vibratoire lorsque F0 était inférieure à 150Hz. La F0 et le taux d’activation du BF ont été relevés via le Voxlog à chaque évaluation. Résultats Le test de Wilcoxon ne montre pas de changement de F0 suite à la rééducation logopédique mais bien une augmentation significative de F0 suite au traitement par BF. Au cours du traitement par BF, une diminution de l’activation de celui-ci suggère un apprentissage du comportement moteur escompté. Discussion L’utilisation du BF avec un accompagnement du thérapeute semble efficace pour atteindre un pattern fréquentiel plus élevé. Néanmoins, l’enseignement des techniques permettant au participant d’augmenter F0 doit être intégré au traitement logopédique. Conclusion La F0 n’étant pas le seul paramètre favorisant la perception d’une voix féminine, le BF reste une méthode certes prometteuse mais surtout complémentaire au traitement logopédique classique. [less ▲]

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See detailEffects of rapid maxillary expansion on respiratory events in children: are we doing no harm?
HENDRIX, Charlotte ULiege; Bruwier, Annick ULiege; SEIDEL, Laurence ULiege et al

Conference (2018, November 09)

Introduction: Rapid maxillary expansion devices are used in children with upper maxillary transverse deficit and cross-bite. They were consistently shown to improve obstructive apnoea syndrome in children ... [more ▼]

Introduction: Rapid maxillary expansion devices are used in children with upper maxillary transverse deficit and cross-bite. They were consistently shown to improve obstructive apnoea syndrome in children. However, the impact of the device in place into the child’s mouth has never been studied. The aim of our study was to quantify the effect of the device on respiratory events while in place. Secondary endpoints were to evaluate its impact on quality of life and on respiratory events after treatment. Material and Methods: 12 consecutive children with maxillary cross-bite were prospectively included in this cohort study. Respiratory events were recorded before, during and after rapid maxillary expansion using a validated type 3 polygraphy including jaw movements. Subjective outcomes were evaluated using Obstructive Sleep Apnea (OSA)-18 quality-of-life questionnaire (OSA-18). Maxillary width and 16/26 distance were evaluated before and after RME on anterior radiography. Results: Estimated apnea hypopnea index increased from 2.67/h (±1.31/h) to 2.9/h (±2.4/h) with the device in place. Respiratory effort characterized by jaw motion > 0.4mm during the respiratory cycle increased from 7.58% (±10.01%) to 16.05% (±15.53%). Sleep-related breathing impairment was confirmed by parents’ questionnaires. Conclusion: While rapid maxillary expansion is an effective treatment for obstructive apnea syndrome in children, our study suggested a transient worsening of sleep breathing while the device is in place. It may be related to an incorrect tongue position and/or to the crowding of the device into the mouth. [less ▲]

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See detailSleep fragmentation is associated with brain tau but not amyloid-β burden in healthy older adults
Chylinski, Daphné ULiege; Rudzik, Franziska; Coppieters't Wallant, Dorothe ULiege et al

Conference (2018, November 09)

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See detailL'agenda des spectacles. L'articulation du théâtre religieux médiéval au calendrier des fêtes et célébrations
Henrard, Nadine ULiege

Conference (2018, November 09)

On s'entend à reconnaître que le théâtre constitue « un phénomène social majeur, enraciné dans la trame de l’existence collective" (Charles Mazouer, 2016). Au Moyen Âge, plus encore qu'à toutes les ... [more ▼]

On s'entend à reconnaître que le théâtre constitue « un phénomène social majeur, enraciné dans la trame de l’existence collective" (Charles Mazouer, 2016). Au Moyen Âge, plus encore qu'à toutes les époques, c'est toute la communauté qui prend en charge son organisation. Il est donc fondamental que l’étude du théâtre médiéval s’opère en étroite conjonction avec celle du contexte historico-social dans lequel ce phénomène s’insère. L’une des manières de mener l’enquête est de voir comment l’agenda des spectacles s’articule au calendrier des activités spirituelles ou temporelles, des fêtes religieuses ou civiles, cycliques ou occasionnelles, bref des dates importantes qui scandent la vie de la communauté. Une des difficultés d'un tel travail tient aux lacunes ou à l'imprécision de la documentation (archives, registres des délibérations des consuls, comptes de dépenses etc) quant à la chronologie des spectacles (on enregistre les années et éventuellement les mois, plus rarement les jours). Sur la base des informations parvenues jusqu'à nous, la communication envisage la manière dont le théâtre religieux (drames liturgiques, Passions, Vies de saints) s'articule au calendrier du culte. On pourrait s’attendre à ce que la représentation des mystères ou des miracles se conforme à une chronologie précise, marquée par une association cohérente entre les dates rituelles et le thème mis en scène, comme c’était le cas pour beaucoup de drames liturgiques. On observe toutefois une grande souplesse tant dans les dates retenues que dans le choix des thèmes. Si des coïncidences avec les fêtes chrétiennes existent bel et bien, les Mystères de la Passion se donnaient bien en dehors du cycle de Pâques, les scènes de la Nativité revivaient parfois en plein été, et les vies des saints étaient loin d'être actualisées à leur anniversaire. Pâques et surtout la Pentecôte se confirment comme des moments importants de l'activité dramatique, dont la saison court essentiellement de la mi-mars à octobre quand elle s'opère en milieu urbain, où elle a lieu le plus souvent en plein air. A partir du XIIIe, les pièces jouées en hiver (surtout pour Noël, l'Epiphanie, la Saint-Eloi…) relèvent souvent de l'activité de confréries (on a ici laissé de côté les manifestations liées au Carnaval). Quelques autres représentations religieuses organisées en ville s'écartent encore d'un calendrier majoritairement estival: elles tiennent le plus souvent aux aléas de l'agenda des entrées royales. [less ▲]

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See detailThe For-care Research; A “realistic evaluation” of a reform program in a multisectoral framework
Leys, Mark; Bourmorck, Delphine; Darcis, Coralie ULiege

Conference (2018, November 08)

This presentation aimed to present the first intermediary results (first observations and tracks for recommendations) of the For-Care research (2016-2019) gathering researchers from 4 belgian universities ... [more ▼]

This presentation aimed to present the first intermediary results (first observations and tracks for recommendations) of the For-Care research (2016-2019) gathering researchers from 4 belgian universities : VUB, UCLouvain, ULiège and UGhent.The For-Care research is a process evaluation of the forensic mental health care reform on three aspects: Collaborations between organisations, MDOs care trajectories and access to care facilities ; and the experiences and role of families and informal care. [less ▲]

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See detailThe walnut husk fly invades Europe: Risk analysis and development of a biological control strategy
Verheggen, François ULiege

Conference (2018, November 07)

Rhagoletis completa is a fly native to California that invaded Western Europe in the late 1980s. The fly was initially identified in Switzerland (1988) and Italy (1991), from where it spread to at least ... [more ▼]

Rhagoletis completa is a fly native to California that invaded Western Europe in the late 1980s. The fly was initially identified in Switzerland (1988) and Italy (1991), from where it spread to at least seven additional countries (France, Spain, Germany, Austria, Croatia, Slovenia and Hungary). Rhagoletis completa has not reached the limits of its potential distribution. Walnut trees are widely distributed in Europe favouring the probability of fly establishment in currently fly-free areas. Since its introduction in Europe, it causes important damage to walnuts. In orchards where Rhagoletis completa is present and uncontrolled, 100% of walnut trees can be infested, causing losses in walnut yields of up to 80%. The negative effect is low (<10% yield loss) under phytosanitary control, although additional costs must also be considered to support specific monitoring for Rhagoletis completa. Europe aims at reducing the amount of phytosanitary products in its territory (e.g. Directive 2009/128/CE), resulting in the necessity to develop environment-friendly methods of pest control. After a 4-year research project conducted jointly in Gembloux Agro-Bio tech (Belgium) and in Chatte (France), we have proposed a new biological method to monitor and control walnut husk flies in walnut orchards. This pheromone-based control strategy is currently being tested in the field, thank to a close association with an industrial partner. This pesticide-free biological product should allow a reduction of the damages caused by the walnut husk fly. [less ▲]

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See detailGeneralized regularity spaces : toward the detection of a logarithmic correction in multi fractal analysis
Loosveldt, Laurent ULiege; Nicolay, Samuel ULiege

Conference (2018, November 07)

The aim of the talk will first be to present the notion of Hölder pointwise spaces and some functions that are studied with this notion. Then, we will introduce generalization of these spaces and explain ... [more ▼]

The aim of the talk will first be to present the notion of Hölder pointwise spaces and some functions that are studied with this notion. Then, we will introduce generalization of these spaces and explain why they give additional information about the behavior of the analyzed function. We will give some wavelets criteria to characterize generalized Hölder spaces and links with generalized Besov spaces will also be discussed. [less ▲]

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See detailCombination of Capillary Electrophoresis and Ion mobility coupled to Mass Spectrometry and Theoretical Calculations for cysteine connectivity identification in peptides bearing two intra-molecular disulfide bonds
Delvaux, Cédric ULiege; Massonnet, Philippe ULiege; Kune, Christopher ULiege et al

Conference (2018, November 06)

Disulfide bonds are post translational modification playing essential roles in the biological activity and stability of numerous peptides and proteins. Intra-molecular disulfide bonds are found in various ... [more ▼]

Disulfide bonds are post translational modification playing essential roles in the biological activity and stability of numerous peptides and proteins. Intra-molecular disulfide bonds are found in various natural-occurring peptides such as animal venoms. In such peptides, the appropriate cysteine connectivity provides the required conformation for efficient binding to their molecular targets, which ensures their bioactivity. The characterization of cysteine pairing is still a challenging issue in the analysis of peptides targeting pharmaceutical or pharmacological utilizations. Thus, the use of sensitive, robust and efficient characterization techniques to access the cysteine pairing is crucial. In our workflow,the separation of the disulfide isomers of three peptides bearing two intra-molecular disulfide bonds but different cysteine connectivities have been tested using Capillary Zone Electrophoresis (CZE) and Ion Mobility (IM) coupled to Mass Spectrometry (MS). Results show that CZE-MS and IM-MS act as complementary techniques to unambiguously determine the cysteine connectivity of a given peptide. Indeed, the combination of the relative migration time to a reference peptide in CZE-MS, the drift time in IM-MS and the generation of fragments by Collision Induced Dissociation (CID) led to the attribution of the disulfide connectivities in all studied cases. Finally, theoretical calculations were performed to model the different structures in gas phase and solution, supporting the experimental observations on the basis of the predicted physicochemical properties. [less ▲]

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See detailScientific literature uses in Geography: analyze of three doctoral dissertations
Stirbu, Simona ULiege

Conference (2018, November 06)

Our study aims to establish the profile of the bibliographical resources used by PhD students in geography. We also verify in which proportion researchers use documents specifically covered by the search ... [more ▼]

Our study aims to establish the profile of the bibliographical resources used by PhD students in geography. We also verify in which proportion researchers use documents specifically covered by the search engine Google Scholar (GS), and three commercial bibliographic databases (DB): Web of Science (WoS), Scopus (multidisciplinary databases) and GeoRef (specialized in geosciences). We choose to work on a sample of three dissertations presented in the Uliège(Belgium) Department of Geography during the 2014-2015 academic year, respectively in Climatology, Tourism and Geomatics. In order to achieve our main objective, the document types, years of publication, and the language of the references, present in the bibliographies of the three theses were identified and analyzed. The follow-up of Bradford's Law, according to which 80% article citations come from 20% journal titles, was also verified. We performed searches in order to verify to which extent researchers' citations are covered by GS and the DBs mentioned. The percentages of documents (all types combined) and journal articles covered by each bibliographic tool were calculated. The results indicate that several types of documents are cited by geographers, and differ depending on the orientation of the research subject to SS&H or S & T. However, most of the citations,73 %, in the three dissertations correspond to journal articles. Books and book chapters follow, and to a lesser extent grey literature (conference proceedings, theses, reports, unpublished works) is much less representative with values <5%. Bibliographies of these three theses don’t follow Bradford's law, higher percentages of journals are required to reach 80% of the articles cited in each thesis. Our research shows that GS outpasses the other DB being the only tool to provide access to other types of scientific literature, such as conference proceedings, theses, reports and unpublished works. In terms of indexed references, GS is the most comprehensive bibliographic tool, having found the majority of references searched with values close to 100 % for the three bibliographies, all documents types combined. Taking into account the results of our analysis we can conclude that, in terms of content, GS constitutes a solid alternative to commercial databases. [less ▲]

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See detailElectrode Materials for Li/Na-ion Batteries: Improving Electrochemical Performance Through Carbon Addition During Synthesis
Mahmoud, Abdelfattah ULiege

Conference (2018, November 05)

Lithium-ion batteries (LIBs) have outperformed other rechargeable battery systems since 1980 and advances in LIBs technology have improved living conditions around the globe. However, Li-ion batteries ... [more ▼]

Lithium-ion batteries (LIBs) have outperformed other rechargeable battery systems since 1980 and advances in LIBs technology have improved living conditions around the globe. However, Li-ion batteries face many challenges and limitations. Na-ion batteries are considered to be an alternative to Li-ion batteries owing to the natural abundance of sodium. New electrode materials are required to increase the energy density of Li/Na-ion batteries. However, their electronic conductivity usually has to be improved through the preparation of composite powders ensuring intimate contact between the active material and conductive carbon. In this presentation, we report on the one-step synthesis of composite materials using spray-drying or hydrothermal synthesis routes, two techniques which are easily up-scalable[1-6]. In order to evidence the effect of the carbon on the microstructural and electrochemical properties of the prepared materials by a spray-drying [1-3] or hydrothermal methods [4-6]. The crystal and local structures were analyzed by combining XRD and 57Fe Mössbauer spectroscopy. The morphological properties were characterized by SEM and TEM (Figure 1). The carbon content was determined by TG/TDA and carbon analyzer. The electrochemical properties were studied by impedance spectroscopy and galvanostatic cycling in lithium and sodium cells. The reaction mechanism during cycling was investigated by combining operando X-ray diffraction and 57Fe Mössbauer spectroscopy. References 1- A. Mahmoud, S. Caes, M. Brisbois, R.P. Hermann, L. Berardo, A. Schrijnemakers, C. Malherbe, G. Eppe, R. Cloots, B. Vertruyen, F. Boschini. J. Solid State Electrochemistry 22 (1) (2018) 103-112. 2- N. Eshraghi, S. Caes, A. Mahmoud, R. Cloots, B. Vertruyen, F. Boschini. Electrochimica Acta 228 (2017) 319-324. 3. B. Vertruyen, N.Eshraghi, C. Piffet, J. Bodart, A. Mahmoud, F. Boschini. Materials 11 (2018) 1076. 4- C. Karegeya, A. Mahmoud, R. Cloots, B. Vertruyen, F. Boschini. Electrochimica Acta 250 (2017) 49-58. 5. C. Karegeya, A. Mahmoud, F. Hatert, B. Vertruyen, R. Cloots, P-E. Lippens, F. Boschini. J. Power Sources 88 (2018) 57-64. 6. A. Mahmoud, C. Karegeya, M. T. Sougrati, J. Bodart, B. Vertruyen, R. Cloots, P-E. Lippens, F. Boschini. ACS Applied Materials and interfaces 10 (2018) 34202-34211. [less ▲]

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See detailImproving Electrochemical Performance of Electrode Materials for Li/Na-ion Batteries Through Carbon Addition During Synthesis
Mahmoud, Abdelfattah ULiege

Conference (2018, November 05)

Lithium-ion batteries (LIBs) have outperformed other rechargeable battery systems since 1980 and advances in LIBs technology have improved living conditions around the globe. However, Li-ion batteries ... [more ▼]

Lithium-ion batteries (LIBs) have outperformed other rechargeable battery systems since 1980 and advances in LIBs technology have improved living conditions around the globe. However, Li-ion batteries face many challenges and limitations. Na-ion batteries are considered to be an alternative to Li-ion batteries owing to the natural abundance of sodium. New electrode materials are required to increase the energy density of Li/Na-ion batteries. However, their electronic conductivity usually has to be improved through the preparation of composite powders ensuring intimate contact between the active material and conductive carbon. In this presentation, we report on the one-step synthesis of composite materials using spray-drying or hydrothermal synthesis routes, two techniques which are easily up-scalable[1-6]. In order to evidence the effect of the carbon on the microstructural and electrochemical properties of the prepared materials by a spray-drying [1-3] or hydrothermal methods [4-6]. The crystal and local structures were analyzed by combining XRD and 57Fe Mössbauer spectroscopy. The morphological properties were characterized by SEM and TEM (Figure 1). The carbon content was determined by TG/TDA and carbon analyzer. The electrochemical properties were studied by impedance spectroscopy and galvanostatic cycling in lithium and sodium cells. The reaction mechanism during cycling was investigated by combining operando X-ray diffraction and 57Fe Mössbauer spectroscopy. References 1- A. Mahmoud, S. Caes, M. Brisbois, R.P. Hermann, L. Berardo, A. Schrijnemakers, C. Malherbe, G. Eppe, R. Cloots, B. Vertruyen, F. Boschini. J. Solid State Electrochemistry 22 (1) (2018) 103-112. 2- N. Eshraghi, S. Caes, A. Mahmoud, R. Cloots, B. Vertruyen, F. Boschini. Electrochimica Acta 228 (2017) 319-324. 3. B. Vertruyen, N.Eshraghi, C. Piffet, J. Bodart, A. Mahmoud, F. Boschini. Materials 11 (2018) 1076. 4- C. Karegeya, A. Mahmoud, R. Cloots, B. Vertruyen, F. Boschini. Electrochimica Acta 250 (2017) 49-58. 5. C. Karegeya, A. Mahmoud, F. Hatert, B. Vertruyen, R. Cloots, P-E. Lippens, F. Boschini. J. Power Sources 88 (2018) 57-64. 6. A. Mahmoud, C. Karegeya, M. T. Sougrati, J. Bodart, B. Vertruyen, R. Cloots, P-E. Lippens, F. Boschini. ACS Applied Materials and interfaces 10 (2018) 34202-34211. [less ▲]

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See detailAutobiographische Schreibverfahren von Musikerinnen und Musikern im 18. und 19. Jahrhundert
Viehöver, Vera ULiege

Conference (2018, November 05)

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See detailSignificado y sentido de la lectura en Goodreads (el caso de Benito Pérez Galdós)
Ceballos Viro, Alvaro ULiege

Conference (2018, November 02)

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See detailNuovi culti eroici nell'alto Ellenismo: una riconsiderazione di destinatari, attori e contesti
Caneva, Stefano ULiege; Coppola, Alessandra

Conference (2018, November)

This paper explores the entanglement between social status and the bestowal of heroic honours upon deceased political leaders and elite members in the late-classical and early Hellenistic period ... [more ▼]

This paper explores the entanglement between social status and the bestowal of heroic honours upon deceased political leaders and elite members in the late-classical and early Hellenistic period. Epigraphic and literary sources shedding light on the establishment, justification and social impact of heroic honours practised by different social groups will be discussed, to investigate the implications of the social status of cult agents and recipients upon the definition of the position of honoured humans in relation to the superhuman sphere. This will also imply exploring the types of relationships existing between private heroic foundations and royal divine foundations in the studied period. Contrary to a generally accepted assumption, it will be argued that heroization was common for members of elite families, while it was not the primary option to reward local political leaders, since their honours were principally modelled after godlike honours. For instance, when they came into existence during the mid-Hellenistic period, cults for high-ranking civic leaders were largely modelled on godlike honours for monarchs, but were decreed after death – it will be argued – to preserve a hierarchical distinction between the social status of their recipients. The posthumous bestowal explains why honours for great civic benefactors also drew on typically heroic honours, such as public burial inside the city. However, similar contaminations of heroic and divine honours had already been exploited for the worshipped deceased kings of the early Hellenistic period (e.g. Alexander at Alexandria, Demetrius at Demetrias), so that a certain mixture of divine and heroic features could be said to have been directly transferred from royal to non-royal leaders. In neither case, however, did the presence of heroic features imply that cultic honours for Hellenistic political leaders would be commonly labelled as heroic. A revealing case is that of the Hellenistic leader Aratus, whose “fitting honours” decreed at Sicyon (Polyb. 8.12-7-8; Plut., Arat. 53) are labelled as heroic by moderns only because they were decreed posthumously. Similarly, at Megalopolis, the posthumous honours for the commander Philopoimen comprised a public tomb in the agora – a typically heroic honour – but were labelled as “honours equal to the gods”, not as heroic. We must wait for the late-Hellenistic and Imperial period to trace a significant multiplication of honours for political leaders explicitly labelled heroic. [less ▲]

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See detailA Copperbelt Laborer's Lifeworld: On Female Miners and Miners' Wives, Miners' Consumption of Arts and Assumption of Labor Rights
Geenen, Kristien ULiege

Conference (2018, November)

A welter of scholarly books and articles homed in on labor the mining industry in the Copperbelt, both in colonial and postindependent times (among many others, Perrings, Higginston, Ferguson, Rubbers ... [more ▼]

A welter of scholarly books and articles homed in on labor the mining industry in the Copperbelt, both in colonial and postindependent times (among many others, Perrings, Higginston, Ferguson, Rubbers, Larmer and Dibwe). To offer additional insights, this panel goes down in scale and takes the worker and his or her relatives, and their life experiences, as a focal point. Against a backdrop of gargantuan companies such as ZCCM or UMHK/Gécamines, this panel considers the worker as the driving force behind mining production and as such opens up space for alternative views. As such, the panelists offer novel ways to reflect upon the energies of the individual laborer and relatives. Various approaches to the worker are possible. A first one concerns the female worker. Recently, female miners appeared in the – mainly masculine – sector, and panelists explore if their entrée affected the authority of the man as head of family, or as mineworker. Secondly, the panel explores patterns of consumption within the miner’s ‘personal sphere,’ with a particular focus on artistic production in the Copperbelts. Thirdly, the panel considers the unionized worker: How does the disgruntled worker show disapproval of dismal labor conditions? Does he perceive a union delegation as a high-powered tool or as a spent force? Finally, the panelists take the wives of the worker into consideration too: How does working in the mining sector affect family life? How do family members deal with the company disciplinary code in daily experiences? What about the influence of the church upon miners’ wives? Through these core themes, the panel gauges the lifeworld of the Copperbelt worker and next of kin, both in past and in present. [less ▲]

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See detailRecherche clinique et fondamentale
CHARAVET, Carole ULiege

Conference (2018, November)

Detailed reference viewed: 18 (1 ULiège)