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See detailDynamical thermalization in Bose-Hubbard systems
Schlagheck, Peter ULg; Shepelyansky, Dima L.

Conference (2016, March)

A bosonic many-body system can exhibit the Bose-Einstein distribution in its single-particle eigenstates not only if it is coupled to a heat and particle reservoir, but also if it is subject to a two-body ... [more ▼]

A bosonic many-body system can exhibit the Bose-Einstein distribution in its single-particle eigenstates not only if it is coupled to a heat and particle reservoir, but also if it is subject to a two-body interaction of moderately low strength which couples the single-particle eigenstates with each other. We numerically verify this dynamical thermalization conjecture within disordered Bose-Hubbard rings of finite size whose parameters are chosen such that the dynamics of the system can be expected to be ergodic [1]. This allows one to associate with each many-body eigenstate of the Bose-Hubbard system well-defined (positive or negative) values for the effective temperature and the effective chemical potential which depend on the energy per particle of the eigenstate under consideration [1]. With this information one can then predict the populations of single-particle eigenmodes within each many-body eigenstate of the system according to the Bose-Einstein distribution, without knowing more details about the quantum dynamics of the many-body system. [less ▲]

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See detailBad News in Service Encounters: Ideas and Insights
Delcourt, Cécile ULg; Gremler, Dwayne

Conference (2016, March)

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See detailA "external" StandPoint on QMS
Massart, Sébastien ULg

Conference (2016, March)

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See detailClassifying simulated wheat yield responses to changes in temperature and precipitation across a european transect
Fronzek, S.; Pirttioja, N.; Carter, T. R. et al

Conference (2016, March)

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See detailLe sensible chez Franz Brentano
Gauvry, Charlotte ULg

Conference (2016, March)

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See detailCertificat successoral européen Aperçu et mise en oeuvre
Wautelet, Patrick ULg

Conference (2016, March)

Cette présentation a pour objectif de donner un aperçu général du fonctionnement du certificat successoral européen mis en place par le Règlement successions

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See detailOrphan Black and Literature
Guesse, Carole ULg

Conference (2016, March)

Detailed reference viewed: 29 (2 ULg)
See detailReturn words and factor complexity
Leroy, Julien ULg

Conference (2016, March)

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See detailCarbon dioxide and vegetable oil for the synthesis of bio-based polymer precursors, theoretical study of the organocatalyzed synthesis of non-isocyanate polyurethanes
Alves, Margot ULg; Jérôme, Christine ULg; Tassaing, Thierry

Conference (2016, March)

Non-isocyanate polyurethanes (NIPUs) represent a green alternative to the classical synthesis route of polyurethanes involving toxic isocyanates. This “greener” approach based upon renewable feedstocks ... [more ▼]

Non-isocyanate polyurethanes (NIPUs) represent a green alternative to the classical synthesis route of polyurethanes involving toxic isocyanates. This “greener” approach based upon renewable feedstocks and carbon dioxide consists in a two-step reaction. In a first step, carbonated vegetable oils are obtained using an appropriate catalyst by the chemical fixation of CO2 onto vegetable oils formerly epoxidized. Finally, the ring-opening polymerization (ROP) of the carbonated vegetable oil by a diamine provides hydroxy urethanes. In this las step, some organocatalysts have been recently proposed that allows achieving good conversion rates in particular in the case of aromatic diamines. However, the activation mechanism of these organocatalysts is not fully elucidated. In this context, the aim of the present project relies on the theoretical study of a model reaction using DFT calculations. Bicyclic guanidine based catalysts, 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) and 7-methyl-TBD (MTBD), were investigated as catalysts for the reaction between propylene carbonate and aliphatic or aromatic amines. The structural ability of TBD to simultaneously give and receive protons was highlighted by the detailed mechanism investigation. The bifunctional activity of TBD significantly reduces the Gibbs energy of the reaction and allows understanding its higher efficiency compared to its methyl counterpart (MTBD). [less ▲]

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See detailAn ensemble of projections of wheat adaptation to climate change in europe analyzed with impact response surfaces
Ruiz-Ramos, M.; Ferrise, R.; Rodríguez, A. et al

Conference (2016, March)

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See detailDes pratiques enseignantes qui font obstacle au rôle des modèles dans la construction des savoirs scientifiques. 2. Le cas de la discipline scolaire "histoire de l'art"
Heins, Pascal ULg

Conference (2016, March)

Dans une perspective comparatiste, des didacticiens de plusieurs disciplines (mathématiques, physique, chimie, biologie, histoire de l’art) ont étudié des pratiques enseignantes faisant obstacle au rôle ... [more ▼]

Dans une perspective comparatiste, des didacticiens de plusieurs disciplines (mathématiques, physique, chimie, biologie, histoire de l’art) ont étudié des pratiques enseignantes faisant obstacle au rôle des modèles dans la construction des savoirs scientifiques. Leur réflexion croisée les a amenés à considérer des niveaux élevés de l’échelle de co-détermination didactique de Chevallard (2012) pour identifier des indicateurs d’une certaine forme de positivisme empirique dans l’épistémologie spontanée des enseignants. Cette posture s’exprime plus ou moins différemment d’une discipline à l’autre, mais le fait que les modèles et théories enseignées ont fait ou non l’objet d’une standardisation au sein de communautés scientifiques savantes déterminent fortement leur transposition didactique. De ce point de vue, l’exemple de l’histoire de l’art a joué un rôle méthodologique important permettant de contraster et de questionner les pratiques dans les autres disciplines. Ce questionnement s’inscrit dans un objectif à plus long terme qui est la reproblématisation (au sens de Orange, 2005) d’enseignements relatifs aux disciplines enseignées. [less ▲]

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See detailUn manuscrit de l’entourage de Noël Bellemare sous le microscope : analyse du ms. W 29 de l’Université de Liège
Oger, Cécile ULg; L'Estrange, Elizabeth; Gilbert, Bernard ULg et al

Conference (2016, February 26)

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See detailNitrous oxide dynamics in sea ice
Kotovitch, Marie ULg; Fripiat, François ULg; Moreau, Sébastien et al

Conference (2016, February 26)

Fluctuations in greenhouse gases (GHGs) concentration alter the energetic budget of the climate system. There is high confidence that natural systems related to snow, ice and frozen ground (including ... [more ▼]

Fluctuations in greenhouse gases (GHGs) concentration alter the energetic budget of the climate system. There is high confidence that natural systems related to snow, ice and frozen ground (including permafrost) are affected. Nitrous oxide (N2O) is one of the potent GHG naturally present in the atmosphere, but witch has seen his concentration growing since industrial era. N2O has a lifetime in the atmosphere of 114 years and a global warming potential (GWP) of 298 to be compared to carbon dioxide that has a GWP of 1. N2O is also describe as the dominant ozone-depleting substance emitted in the 21st Century. Yet, there are still large uncertainties and gaps in the understanding of the cycle of this compound through the ocean and particularly in sea ice. Sources and sinks of N2O are therefore still poorly quantified. The main processes (with the exception of transport processes) involved in the N2O cycle within the aquatic environment are nitrification and denitrification. To date, only one study by Randall et al. present N2O measurements in sea ice. Randall et al. pointed out that sea ice formation and melt has the potential to generate sea-air or air-sea fluxes of N2O, respectively. [less ▲]

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See detailDes modèles héroïques et bibliques pour François Ier. Le cas d’Hercule
Laruelle, Anne-Sophie ULg

Conference (2016, February 25)

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See detailL’enseignement de l’éducation physique en Belgique francophone : une lente transition vers la littératie physique et un ancrage sociétal
Cloes, Marc ULg

Conference (2016, February 25)

A la fin des années 90’, les autorités en charge de l’Education dans l’actuelle Fédération Wallonie-Bruxelles ont attribué à l’éducation physique la mission de développer trois domaines de compétences ... [more ▼]

A la fin des années 90’, les autorités en charge de l’Education dans l’actuelle Fédération Wallonie-Bruxelles ont attribué à l’éducation physique la mission de développer trois domaines de compétences (condition physique, habiletés gestuelles, coopération socio-motrice) pour poursuivre en parallèle quatre finalités (santé, sécurité, expression-communication, éducation sportive). Si les textes officiels semblaient encourager le développement d’un cours d’éducation physique où le sport cédait un peu de terrain à l’activité physique au sens large, force est de constater que, dans les faits, les séances sont restées essentiellement construites par rapport à la pratique de disciplines sportives (dont le choix tend par ailleurs à s’élargir et à se diversifier). Depuis quelques années, sous l’impulsion des formateurs d’enseignants, on constate toutefois une modification très progressive des mentalités. De plus en plus d’initiatives sont ainsi mises en place sur le terrain dans la perspective d’amener les élèves à devenir des citoyens responsables … de leur corps tout au long de leur vie. Cette évolution en faveur de la littératie physique s’accompagne par ailleurs de démarches visant à souligner l’ancrage sociétal de la discipline dont l’apport concret doit impérativement être mis en exergue : le cours d’éducation physique qui présente des liens directs avec ce qui se passe en dehors des murs de l’école. Le professeur d’éducation physique est ainsi de plus en plus présenté comme le potentiel coordinateur de la promotion d’un style de vie actif au sein des établissements scolaires. [less ▲]

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See detailVers un nouvel ancrage sociétal du cours d’éducation physique
Cloes, Marc ULg

Conference (2016, February 24)

Since two decades, a growing number of publications underlines the increase of the sedentariness of the society and, in parallel, that of the number of overweight people. It has been demonstrated that ... [more ▼]

Since two decades, a growing number of publications underlines the increase of the sedentariness of the society and, in parallel, that of the number of overweight people. It has been demonstrated that these evolutions will have negative consequences on the health of the citizen at mid and long terms. School is identified as one of the main pillars of the promotion of a physically active lifestyle. By the competences that they acquire during their studies, physical educaiton teachers are considered as the potential corner stone of actions to be implemented in order to allow youth to become citizen responsible of their body and to learn how to use it longlife. That implies reinforcing application of principles that physical educators know very well but that are not necessary integrated systematically in the professional practice. Beforehand to the action on the gym, it means that specific appraoches of teachers education (pre- and in-service) have to be implemented. The presentation proposes to review the current developments and will emphasize the share of good practices in teaching as well as in teacher education. [less ▲]

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See detailBouger plus: Retour vers le futur
Cloes, Marc ULg

Conference (2016, February 22)

Bouger plus est un projet visant à encourager la pratique de l'activité physique chez les seniors. Il est né dans le cadre d'une collaboration entre le Service Intervention et Gestion en Activités ... [more ▼]

Bouger plus est un projet visant à encourager la pratique de l'activité physique chez les seniors. Il est né dans le cadre d'une collaboration entre le Service Intervention et Gestion en Activités physiques et sportives de l'Université de Liège, d'une part, la Commune d'Esneux, d'autre part. Après avoir analysé les caractéristiques des habitudes des habitants de la la commune en matière d'activité physique, des interventions ont été implantées auprès d'un public cible particulier: les seniors. Ceux-ci sont considérés comme des personnes de 50 ans et plus. L'exposé retracera les différentes étapes de cette collaboration fructueuse puisque, six ans après le lancement de cette initiative citoyenne, des cycles d'activités sont toujours proposés et rencontrent d'ailleurs toujours plus de succès. Une réflexion sera menée à propos de l'évolution en cours du concept et des options qui se présentent pour la pérennisation de ce projet. [less ▲]

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See detailEsquisse d'une méthode et questions émotionnelles
Englebert, Jérôme ULg

Conference (2016, February 22)

Detailed reference viewed: 36 (5 ULg)
See detailDoes sector-specific experience matter? The case of European higher education ministers
Jacqmin, Julien ULg

Conference (2016, February 22)

Detailed reference viewed: 13 (1 ULg)
See detail"Témoigner-pour-mourir" : notes sur Sartre, Bourdieu et le passage par la biographie
Cormann, Grégory ULg

Conference (2016, February 22)

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See detailA typology of labour market intermediaries securing nonstandard career paths
Lorquet, Nadège ULg; Pichault, François ULg; Orianne, Jean-François ULg

Conference (2016, February 21)

In a context where the classical vision of organizational careers is eroded, this paper explores how Labour Market Intermediaries (LMIs) can secure nonstandard career paths. To characterize LMIs’ emerging ... [more ▼]

In a context where the classical vision of organizational careers is eroded, this paper explores how Labour Market Intermediaries (LMIs) can secure nonstandard career paths. To characterize LMIs’ emerging roles, we propose a multidimensional grid made up of 6 criteria likely to answer the following questions: 1) where do LMIs come from? 2) who is responsible for the matchmaking process? 3) when do LMIs secure career paths? 4) how do they support professional transitions? 5) what kind of information do they produce and diffuse on the labour market? 6) why do they intervene on the labour market? We validate this analytical framework through its application to five case studies selected to compare the roles LMIs can play in securing careers paths. Beyond the creation of an original grid, results outline two ideal-typical ways of securing transitions. On the one hand, some LMIs offer security by reconstructing internal labour markets and consider workers as ‘quasi-employees’. On the other hand, other LMIs suggest more disruptive solutions in which workers are supported in their job transitions ‘as if’ they were ‘quasi-self-employed’, i.e.: becoming fully responsible for their career. In the conclusion, we discuss societal challenges surrounding these two ideal-typical situations. [less ▲]

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See detailElp3 Lysine Acetyl-Transferase Controls Neuronal Survival in the Developing Inner Ear and is Crucial to Balance and Hearing
Delacroix, Laurence ULg; Mateo Sanchez, Susana ULg; Freeman, Stephen ULg et al

Conference (2016, February 20)

Elp3 lysine acetyl-transferase, the catalytic subunit of the Elongator complex, has been assigned multiple roles in gene transcription, DNA methylation and protein translation efficiency. Given the ... [more ▼]

Elp3 lysine acetyl-transferase, the catalytic subunit of the Elongator complex, has been assigned multiple roles in gene transcription, DNA methylation and protein translation efficiency. Given the importance of acetylation homeostasis in controlling developmental processes together with recent reports implicating Elp3 in cortical neurogenesis, we investigated its role during inner ear formation. In the inner ear, we detected Elp3 transcript in the sensory epithelia of the entire otic vesicle at embryonic day E11.5. At later stages, Elp3 mRNA is strongly expressed in the vestibular and spiral ganglion neurons. To investigate the role of Elp3 in vivo, we used a conditional knock-out mice (Foxg1Cre) in which the expression of the acetyl-transferase is lost in early otocyst. These mice show obvious vestibular defects as indicated by a stereotyped circling ambulation, head bobbing, retropulsion and the absence of a reaching response in the tail-hanging test. Furthermore, we identified a severe hearing loss in Elp3cKO mice through Auditory Brainstem Responses. We show that Elp3 enzyme is crucial for neuronal survival in the spiral ganglion and in the vestibule and that it ensures a correct innervation pattern in the developing inner ear. In the absence of Elp3, a drastic increase in the number of apoptotic neurons was detected by active Caspase-3 and pH2AX immunostainings, particularly during the early stages of development (between E12.5 and E14.5). Postnatally, the neurons remaining in Elp3cKO cochleae seem to establish synaptic contacts with the sensory cells but show obvious signs of cell damage as evidenced by Transmission Electron Microscopy. Taken together, these data support a role for Elp3 in hearing and balance and point out an important role for acetylation homeostasis during inner ear formation. We are currently investigating the molecular mechanisms underlying Elp3 effect on neuronal survival and pathfinding. [less ▲]

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See detailLes dysphasies : nouvelles conceptions théoriques et implications cliniques
Maillart, Christelle ULg

Conference (2016, February 20)

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See detailComputerized adaptive and multi-stage testing with R
Yan, Duanli; Magis, David ULg

Conference (2016, February 19)

Computerized Adaptive Testing (CAT) has greatly improved the accuracy and efficiency of psychological testing for decades. Multistage Testing (MST) has received much of attention recently. MST is similar ... [more ▼]

Computerized Adaptive Testing (CAT) has greatly improved the accuracy and efficiency of psychological testing for decades. Multistage Testing (MST) has received much of attention recently. MST is similar to CAT such that it allows the adaptation of the difficulty of the test to the level of ability of a test taker. Specifically, in MST, items are interactively selected for each test taker, but rather than selecting individual items, groups of items are selected and the test is built in stages. Over the last decade, researchers have investigated ways for an MST to incorporate most of the advantages from CAT and linear testing, while minimize their disadvantages. These features include testing efficiency and accuracy, greater control of test content, more robust item review, as well as simplified test assembly and administration. Therefore, MST can be an effective compromise between CAT and linear testing, embedding features and benefits from both designs. Thus, MST becomes of more and more interest to researchers and practitioners as technology advances. This presentation will first provide a general overview of a multistage test (MST) design and its important concepts and processes. It will then present the latest development on CAT and MST using R, the mstR package. The presentation will also illustrate how to simulate MST administrations using mstR package, and discuss some practical issues and considerations for MST from design to applications. [less ▲]

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See detailBlack British women filmmakers: towards a genderracial Cinema ?
Herbert, Emilie ULg

Conference (2016, February 19)

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See detailIdentifying Late Egyptian Virtual Relative Clauses
Sojic, Nathalie ULg

Conference (2016, February 19)

Ancient Egyptian so-called "virtual" relative clauses (VRC) are adverbial clauses that function like relative clauses. Descriptions provided by Late Egyptian grammars inform students of their existence ... [more ▼]

Ancient Egyptian so-called "virtual" relative clauses (VRC) are adverbial clauses that function like relative clauses. Descriptions provided by Late Egyptian grammars inform students of their existence and of the possibility to translate them accordingly. But they are not of a great help if one wants to grasp and describe the Late Egyptian relativization system in a linguistic perspective. The talk, given on the occasion of the international Crossroads V conference, aimed at providing interpretive guidelines based on syntax, pragmatics and Discourse Analysis. In my communication, I showed that Discourse Analysis proved to be very fruitful in clarifying some contexts of use of LEg VRCs as well as some interpretive processes. [less ▲]

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See detailDe uitspraak van Franstalige CLIL-leerders van het Nederlands
Vanackere, Laurine; Van Pée, Marie; Hiligsmann, Philippe et al

Conference (2016, February 19)

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See detailThe Egyptianness of the Coptic basic vocabulary: A typological view
Grossman, Eitan; Polis, Stéphane ULg

Conference (2016, February 18)

The notion of ‘basic vocabulary’ is associated with the linguist and anthropologist Morris Swadesh, who proposed a list of 200 (and later 100) items. These lists, while widely used in historical and ... [more ▼]

The notion of ‘basic vocabulary’ is associated with the linguist and anthropologist Morris Swadesh, who proposed a list of 200 (and later 100) items. These lists, while widely used in historical and comparative linguistics, are based on Swadesh’s intuitions rather than on empirical research. More recently, however, the Leipzig Loanword Typology Project conducted a cross-linguistic survey of loanwords (Haspelmath & Tadmor 2009). One of the results is a 100-item list of basic vocabulary entries — the ‘Leipzig-Jakarta list of basic vocabulary.’ This list is the product of four factors, computed for a database of 1440 meanings in 41 languages: borrowability, representation in the database, analyzability / simplicity, and age. As Tadmor (2009) points out, this is the first list of basic vocabulary items based on extensive cross-linguistic comparison, and it constitutes a ‘full-fledged basic vocabulary’ that ‘comprises the notions normally associated with this concept: stability (our age score), universality (our representation score) and simplicity (our analyzability score), as well as resistance to borrowing (our unborrowed score)’ (2009: 68). In this talk, we examine this list of 100 meanings in order to evaluate the influence of Greek on the Coptic basic vocabulary, or — to put it the other way around — the ‘Egyptian¬ness’ of the Coptic lexicon, which seems to reflect an intense language contact situation. As a first step, Coptic data were collected from Crum (1939), the most extensive Coptic dictionary, for four dialects: Sahidic, Bohairic, Fayyumic, and Akhmimic. All Coptic lexemes associated with a meaning on the list were collected, even if poorly attested. Additionally, a questionnaire was been submitted to Copticists in order to detect Greek loanwords that would also be used for expressing these 100 meanings. Furthermore, we used etymological tools (Černý 1976; Westendorf 1977; Vycichl 1983) in order to attribute an age score (from 0 = Greek loanword to 4 = Old Egyptian) to the lexemes at two levels: the formal level (when is the word first attested in Ancient Egyptian) and the semantic level (when is the Coptic meaning first associated with this word). The vast majority of meanings (ca. 85%) have at least one pre-Coptic Egyptian cognate, most of which are already attested in Old Kingdom texts. As a result of this study, we are able (1) to evaluate the influence of Greek on the basic vocabulary of the main Coptic dialects, (2) to describe the basic vocabulary of Coptic dialects independently and to observe how they differ from one another, (3) to produce a first estimate of the rate of change in basic vocabularies over the course of Egyptian as a whole. [less ▲]

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See detailSecond argument realization in Earlier Egyptian
Motte, Aurore ULg; Winand, Jean ULg

Conference (2016, February 18)

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See detailDistribution of inorganic and organic contaminants in the intertidal surface sediments along the Hugli River Estuary, eastern part of India
Das, Krishna ULg; Sarkar, Santosh; Thomé, Jean-Pierre ULg et al

Conference (2016, February 17)

Hooghly estuary and coastal environment in north east coast of India has been strongly affected by the rapid human settlements, intensive boating and tourist activities, deforestation and ongoing ... [more ▼]

Hooghly estuary and coastal environment in north east coast of India has been strongly affected by the rapid human settlements, intensive boating and tourist activities, deforestation and ongoing agricultural and aquacultural practices. The present work investigated trace elements (TEs, T-Hg, Al, V, Cr, Fe, Mn, Cu, Zn, Co, Ni, Ca, Sr, Li, Be, P, Mo, Ag, Cd, Sn, Sb, Ba, Pb, Bi, U, As, Se) and organohalogen compounds in surface sediment (top 0-10cm) considering 8 sampling sites along the Hugli River Estuary (HRE), India. The studied organic compounds include polychlorobiphenyls (PCBs), hexachlorocyclohexane isomers (HCHs), dichlorodiphenyltrichloroethane and metabolites (DDTs) and polybromodiphenyl ethers (PBDEs). Textural analyses of the sediment reveal an overall dominance of mud. All trace elements could be detected at variable concentrations in the following descending order: Al>Fe>Ca> P>Mn> Cu> Zn> Ba >V >Cr>Sr>Ni> Li >Co >Pb>As >Se >U >Be >Sn>Bi >Ag >Mo >Cd >Sb. A synchronous enrichment of majority of the elements were observed at the site Gangasagar (~100 km south megacity Calcutta), situated at the confluence of Hugli River and Bay of Bengal, which might be attributed to cumulative impact of the physicochemical processes and multiple anthropogenic sources. It is revealed that PCBs and DDTs were the dominant compounds among the organic pollutants accounting concentrations up to 23.5 ng.g-1 and 4.4 ng.g-1 respectively at the site Babughat, adjacent to the megacity Calcutta. The results have implications for pollution in complex estuarine environment in a meso-macrotidal setup where there is significant influx of sediments carrying huge load of inorganic and organic pollutants mainly due to rapid urbanization and industrialization. [less ▲]

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See detailDesiccation cracks formation in clay-barrier for nuclear waste disposal
Hubert, Julien ULg; Prime, Noémie; Plougonven, Erwan ULg et al

Conference (2016, February 16)

In geotechnical engineering, the desiccation cracking of soil is commonly observed. This phenomenon is detrimental to the behavior of earth material and earth structure. Desiccation cracks can lead to the ... [more ▼]

In geotechnical engineering, the desiccation cracking of soil is commonly observed. This phenomenon is detrimental to the behavior of earth material and earth structure. Desiccation cracks can lead to the overall failure of many geotechnical structures: • They can affect the slope stability of earth dams or embankments; • They can initiate internal erosion of embankments due to water flow through the cracks; • They can compromise the efficiency of soil barriers such as landfill liners and top covers. Nowadays, the storage of nuclear waste in deep impermeable geological layers is considered. These storages are based on the multi-barrier principle, the last of which being the host rock, typically a clayey material. In this context, maintaining the very low hydraulic conductivity of the host rock is crucial. Unfortunately, the ventilation of excavated galleries causes convective drying of the host material and can lead to crack formation. This work aims to understand in which conditions exactly, during convective drying, does cracking occur in clayey materials. An experimental campaign has been carried out to characterize the drying behavior of Boom clay which is the host rock at the underground research facility in Mol (Belgium). X-Ray micro-tomography has been used to analyze crack development as well as shrinkage. The experiments are used to calibrate the transfer parameters of a convective drying law based on the limit layer model. This calibration is based on agreement of the drying kinetics. A numerical study is then performed and aims at reproducing the behavior observed during the experiments. A thermo-hydro-mechanical coupled model is used to determine the stress distribution during the drying and a tensile failure criterion is suggested to predict crack genesis. Simulations are performed using the in-house built FEM code LAGAMINE. [less ▲]

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See detailCycle, cercle, compilation. Introduction
Henrard, Nadine ULg

Conference (2016, February 16)

Introduction à la journée "Cycle, cercle, compilation", s'intéressant à la constitution d'ensembles d'hommes (cercles littéraires) ou de textes (compilations, cycles) au Moyen Âge. Les questionnements ... [more ▼]

Introduction à la journée "Cycle, cercle, compilation", s'intéressant à la constitution d'ensembles d'hommes (cercles littéraires) ou de textes (compilations, cycles) au Moyen Âge. Les questionnements soulevés par cette journée touchent ainsi à tous les stades de la chaîne du texte, de l’écriture à la réception et nécessitent de conjuguer axes synchronique et diachronique, données codicologiques et littéraires, historiques et aussi sociologiques. Ils invitent à interroger la part du hasard et de l’intention qui joue dans le rassemblement des œuvres et montrent, si besoin en était encore, qu’il est indispensable d’inscrire le fait littéraire dans une dynamique globale, en rappelant que les œuvres ne sont que des pièces imbriquées dans divers systèmes avec lesquels elles entrent en dialogue. [less ▲]

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See detailMise en recueil et cyclisation des textes de théâtre
Henrard, Nadine ULg

Conference (2016, February 16)

Sur la base de l'examen d'une variété de cas, cette étude s'intéresse à la manière dont se regroupent les textes de théâtre dans la tradition : rassemblement au sein des manuscrits, collections de textes ... [more ▼]

Sur la base de l'examen d'une variété de cas, cette étude s'intéresse à la manière dont se regroupent les textes de théâtre dans la tradition : rassemblement au sein des manuscrits, collections de textes, cyclisation. Les exemples s'étalent de la fin XIe au XVIe s.; ils sont puisés à des corpus variés (latin, langue d'oc ou d'oïl; théâtre religieux et théâtre profane). [less ▲]

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See detailLa littérature panoramique par ses éditeurs
Stienon, Valérie ULg

Conference (2016, February 13)

Phénomène de société et de mode, la littérature panoramique identifiée rétrospectivement par Walter Benjamin constitue surtout une entreprise éditoriale majeure. Elle mobilise un grand nombre d’acteurs ... [more ▼]

Phénomène de société et de mode, la littérature panoramique identifiée rétrospectivement par Walter Benjamin constitue surtout une entreprise éditoriale majeure. Elle mobilise un grand nombre d’acteurs (libraires, illustrateurs, graveurs, imprimeurs) à l’échelle européenne et prépare de nouveaux statuts pour la fonction même d’éditeur, qui voit naître un discours spécifique à son propos, dans une époque qui précède de peu sa professionnalisation et dans un contexte de circulation médiatique accrue de l’imprimé sous ses formes les plus variées. La communication se centrera sur deux éditeurs panoramiques français importants, Curmer et Aubert, pour mettre en évidence la nature de leurs projets, l’originalité de leurs méthodes et l’identité de leurs personnels. On reviendra sur le rôle de passeur culturel du premier et de rassembleur d’une équipe d’artistes du second, deux caractéristiques à l’origine du rayonnement de la littérature panoramique. On examinera aussi les particularités de certaines de leurs productions, entre texte et image, journal et livre, ouvrage de collection et fascicule éphémère, jouant sur les matériaux et les circuits de diffusion. [less ▲]

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See detailBiologie, sociologie, philosophie. Le fait moral entre Durkheim et Bergson
Caeymaex, Florence ULg

Conference (2016, February 12)

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See detailThe secret life of a Mediterranean seagrass litter macrofauna community : a history of oxygen
Remy, François ULg; Michel, Loïc ULg; Sturaro, Nicolas ULg et al

Conference (2016, February 12)

Most of the foliar primary production of Posidonia oceanica, a major Mediterranean seagrass, sheds in autumn and is exported from the meadow to adjacent areas to form "Exported Macrophytodetritus ... [more ▼]

Most of the foliar primary production of Posidonia oceanica, a major Mediterranean seagrass, sheds in autumn and is exported from the meadow to adjacent areas to form "Exported Macrophytodetritus Accumulations", EMAs. These EMAs are a habitat, shelter and feeding place for an abundant and diverse community of macrofauna. Being very dynamic places and potentially playing a role of transition compartment between water column and sediment, EMAs present high variability in term of physicochemical conditions and more specifically in term of oxygen concentration. Mild to severe hypoxic periods (2 - 0.01 mL O2.L-1) can be observed in situ at different moments of the year, and this variability thus potentially play a structuring role on the macrofauna community. During this study, our main specific questions were (1) Does oxygen stratification occur inside EMAs? (2) If present, how long does it take to observe this stratification? (3) Is the macrofauna impacted and do the dominant species occupy defined positions inside the different micro-habitats? To assess the importance of this impact, an experimental study was conducted in October 2014 near the STARESO oceanographic station (Calvi, Corsica) using an original "layer-sampling" design. The experimental construction was put underwater inside an EMA for 48 hours at a depth of 8m. Samples were collected (N=8) in a 20cm thick EMA using "sealed" boxes to sample every 5cm, from the sediment, to the water column. Oxygen, nutrients and of course the litter itself (containing the macrofauna) were sampled carefully to make sure no exchange occurred between the 4 different layers. After data analysis, the assessment was clear: oxygen stratification occurred in less than 48h and oxygen level inside the layer close to the sediment experienced a fast decrease below the hypoxia threshold (2 mL O2.L-1). Diversity was highly impacted, showing a clear positive link with oxygen concentration. Macrofauna also appeared to follow this oxygen stratification but this response was very species specific. Some species didn't follow oxygen and are present in every layer and most of them were strongly positively linked to oxygen concentration. But a few (Nebalia strausi and Athanas nitescens) were strongly negatively linked to oxygen concentration and were present only in the more hypoxic layers. This experimentation thus confirmed our in situ observations. Oxygen stratification occurred quickly (< 48h) when EMAs were experiencing calm weather. This stratification observed from the water column to the sediment was very marked. Diversity and abundance of most abundant macrofauna species were drastically influenced by this stratification, showing the importance of these micro-habitats in structuring of this macrofauna community. [less ▲]

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See detailDroit international et pacifisme en Belgique de 1870 à 1940 : une cohabitation complexe
Genin, Vincent ULg

Conference (2016, February 12)

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See detailPrésentation du programme de la conférence mondiale des humanités (Liège, août 2017)
Winand, Jean ULg

Conference (2016, February 11)

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See detailThe sanctuary of Despoina at Lykosoura: a Megalopolitan creation?
Palamidis, Alaya ULg

Conference (2016, February 11)

Pausanias states that the most important Parrhasian sanctuaries were duplicated in Megalopolis in the aftermath of its creation in the 4th century B.C. A noteworthy exception is the sanctuary of Despoina ... [more ▼]

Pausanias states that the most important Parrhasian sanctuaries were duplicated in Megalopolis in the aftermath of its creation in the 4th century B.C. A noteworthy exception is the sanctuary of Despoina at Lykosoura, which was very ancient according to the author. However, the absence of epigraphical or literary evidence concerning Lykosoura and predating the synoecism and the very limited archaeological material dating to the Archaic and Classical periods suggest that it was the site of a minor cult before the synoecism. The presence of Despoina is not attested before, and it is possible that the cult of the goddess was only developed by Megalopolis, which associated to it several other Arcadian deities and gave it an ancient and local flavour, in order to assert its position as the new cult-centre of Arcadia. Similarly, the sanctuary of Demeter Eleusinia at Basilis may have only been created or developed by Megalopolis, despite its alleged antiquity. This phenomenon finds its closest parallel in the sanctuary of Andania, controlled by the city of Messene. The presence of Demeter and deities associated with her in these sanctuaries, as well as the existence of mysteries, may reflect the growing influence of the sanctuary of Eleusis during the Hellenistic period. [less ▲]

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See detailThe dynamics of inequality in Katanga, D.R.Congo. A conversation with Bourdieu
Rubbers, Benjamin ULg

Conference (2016, February 10)

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See detailLocal thermal history during the laser additive manufacturing of steel
Mertens, Anne ULg; Hashemi, Seyedeh Neda ULg; Tchuindjang, Jérôme Tchoufack ULg et al

Conference (2016, February 09)

Laser additive manufacturing techniques – such as laser cladding − were developed in the late 1990s as economic layer-by-layer near-net-shape processes allowing for the production or restoration of ... [more ▼]

Laser additive manufacturing techniques – such as laser cladding − were developed in the late 1990s as economic layer-by-layer near-net-shape processes allowing for the production or restoration of complex metallic parts. These techniques are characterised by ultra-fast solidification and cooling rates, thus giving rise to ultra-fine out-of-equilibrium microstructures with potentially enhanced mechanical properties. However, the general quality of a component, as well as its dimensional accuracy, microstructure and final usage properties are strongly influenced by the local thermal history experienced during fabrication. As a consequence, a deeper understanding of the influence of the various processing parameters on the local thermal history during fabrication is of paramount importance, and it can only be reached by combining detailed experimental studies and modeling. Keeping this in mind, the present paper reviews on-going investigations carried out in the Metallic Materials Science Unit of the University of Liege in the laser additive manufacturing of HSS and of stainless steel 316L. [less ▲]

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See detailFigures de l'identité et régimes de fiction dans l'espace public
Servais, Christine ULg

Conference (2016, February 09)

Cette communication interroge la notion de figure comme opérateur de publicisation de l'identité singulière, et distingue à cette fin différents régimes de fiction. Il s'agit d'analyser les dynamiques à ... [more ▼]

Cette communication interroge la notion de figure comme opérateur de publicisation de l'identité singulière, et distingue à cette fin différents régimes de fiction. Il s'agit d'analyser les dynamiques à l’œuvre entre la (re)présentation de soi et sa réception dans la formation de jugements publics, ce qui suppose de considérer ensemble le niveau de l'histoire racontée et le niveau de sa lecture. L'objectif est de proposer, pour l’analyse des scènes de publicisation de la singularité, un outillage qui soit en lien avec les questions de jugement et de responsabilité. [less ▲]

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See detailQui sont les auteurs « Aubert » ? La figure auctoriale en régime promotionnel
Stienon, Valérie ULg

Conference (2016, February 05)

La Maison Aubert et l’esprit d’entreprise de Charles Philipon sont sous la Monarchie de Juillet à l’origine d’un réseau éditorial fructueux et protéiforme fondé sur la diversification des supports (livres ... [more ▼]

La Maison Aubert et l’esprit d’entreprise de Charles Philipon sont sous la Monarchie de Juillet à l’origine d’un réseau éditorial fructueux et protéiforme fondé sur la diversification des supports (livres, journaux, volumes de pittoresques et petits formats de la littérature panoramique), sur le commerce du produit dérivé (« Muséums », caricatures à la pièce, papiers peints) et sur l’exploitation de l’image pour vendre le texte. On sait que Philipon a lancé les carrières de plusieurs dessinateurs importants comme Daumier et Doré. On sait également qu’il a su attirer des collaborateurs de premier choix dans les équipes rédactionnelles de la petite presse satirique de la Caricature et du Charivari. Ces démarches et la production qui en a résulté ont contribué à fonder autour d’une écurie éditoriale une véritable marque de fabrique, sinon une esthétique. Mais ont-elles pour autant participé à l’émergence de figures d’auteurs ? Louis Huart, Taxile Delord, Edmond Texier, Albert Cler, Arnould Frémy, Maurice Alhoy, James Rousseau et bien d’autres sont demeurés des « petits », attachés aux dépôts de pittoresques et aux panthéons comiques. À travers le cas des productions Aubert, il ne s’agira pas d’examiner comment une figure d’auteur identifiable (de son temps et/ou par la postérité) investit ou bénéficie de la publicité, mais d’envisager la problématique complémentaire et en quelque sorte inverse : les modalités de constitution de la figure auctoriale dans un contexte, un réseau et des supports qui jouent d’emblée et pleinement le jeu publicitaire sous ses formes les plus abouties, s’appuyant sur les stratégies économiques et promotionnelles rendues possibles par l’ère médiatique. L’individualité auctoriale peut-elle prendre forme et statut au sein d’une collectivité prépondérante et ouvertement spéculatrice, celle du commerce de la librairie et de la presse fondé sur la collaboration, le transfert et l’interchangeabilité des identités au profit des fonctions socioprofessionnelles ? En d’autres termes, si l’auteur ne peut se faire un nom sans publicité, (comment) peut-il exister lorsque tout n’est que publicité ? [less ▲]

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See detailDysmorphology Quiz
BULK, Saskia ULg; PIERQUIN, Geneviève ULg

Conference (2016, February 04)

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See detailA family with a split hand malformation
PIERQUIN, Geneviève ULg

Conference (2016, February 04)

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See detailBien soigner l'arthrose: un enjeu de société
Henrotin, Yves ULg

Conference (2016, February 04)

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See detailArtificial Intelligence and Energy
Cornélusse, Bertrand ULg; Fonteneau, Raphaël ULg

Conference (2016, February 02)

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See detailMédecine de famille et prévention quaternaire. Conférence à l’Université Ouverte du Hainaut. Charleroi 1 février 2016
Jamoulle, Marc ULg

Conference (2016, February 01)

L’exposé est destiné aux seniors fréquentant l’Université du Temps disponible, soutenue par la Province du Hainaut, Belgique La médecin de famille ou médecine générale (MG/MF) est un métier complexe et ... [more ▼]

L’exposé est destiné aux seniors fréquentant l’Université du Temps disponible, soutenue par la Province du Hainaut, Belgique La médecin de famille ou médecine générale (MG/MF) est un métier complexe et méconnu qui demande de solides connaissances fondamentales en sciences de la vie mais aussi en sociologie et en anthropologie autant qu’en épidémiologie. La formation internationale européenne des MG/MF est rythmée dans l’exposé par la définition européenne qu’en donne l’association européenne des Médecins de famille (Wonca Europe) L’exposé, qui débute par une prise de position éthique et politique, est aussi émaillé de diapositives de l’auteur ou d’emprunt à la littérature internationale de médecine de famille et orné de détails de photographies prises par l’auteur. Humanisme et complexité sont les deux thèmes majeurs abordés. La deuxième partie de l’exposé est consacré à la Prévention quaternaire, concept inventé par l’auteur et qui incite les médecins et les patients à chercher une relation constructrice et à se garder des effets pervers de la médecine, tant symbolique que soi-disant scientifique, contrôlée par le profit et génératrice de surmédicalisation de la société. [less ▲]

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See detailTransformational Leadership, Role Conflict and the Moderating Role of Uncertainty Avoidance
Selzer, Veronika Luisa; Schumann, Jan Hendrik; Büttgen, Marion et al

Conference (2016, February)

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See detailTransfer of contaminants in the food chain up to marine mammals
Das, Krishna ULg

Conference (2016, February)

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See detailThe Pseudocommando and The Terrorist : Casuistic Comparison and Analysis
Leistedt, Samuel; Glowacz, Fabienne ULg

Conference (2016, February)

After attending this presentation, attendees will gain an understanding about specific types of mass murderers and the differences with terrorist offenders. This presentation will impact the forensic ... [more ▼]

After attending this presentation, attendees will gain an understanding about specific types of mass murderers and the differences with terrorist offenders. This presentation will impact the forensic science community by providing an in depth psychological and criminological description of mass murderers and terrorist profiles, including warning signs. Pseudocommandos and terrorists kill innocent people. They generally both kill during daytime, plan their offenses and generally expect to be killed during their attack. In a first part and through the study of criminal files, the authors propose a casuistic analysis of a belgian mass murderer. All the aspects of the psychopathology and criminology of this offender will be discussed, including the precise offending sequence. In a second part, the authors will compare the psychopathology of mass murderers and terrorist offenders. Despite their similarities, these two kind of offenders also have strong differences in their psychological and social characteristics.These differences are very important in terms of motivation, state of mind, psychopathology and finally for forensic evaluations. In conclusions, mass murderers and terrorists have common characteristics. Otherwise, their basic psychological and criminological functionings are different. These elements are important and should be considered in forensic evaluations. [less ▲]

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See detailLes Q-codes ; Une table des matières pour la médecine générale
Jamoulle, Marc ULg

Conference (2016, January 30)

Présentaion en français de l'état d'avancement des travaux sur les Q-codes

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See detailEmergency department bed coordination: burden and pitfalls.
GILLET, Aline ULg; Minder, Anaïs ULg; Nyssen, Anne-Sophie ULg et al

Conference (2016, January 30)

Introduction Improving patient flow from emergency department (ED) to in-hospital bed admission has become an everyday challenge. Implementation of an ED bed manager (BM) who monitors hospital beds ... [more ▼]

Introduction Improving patient flow from emergency department (ED) to in-hospital bed admission has become an everyday challenge. Implementation of an ED bed manager (BM) who monitors hospital beds availability daily has been advocated to reduce boarding time for admitted patient. However, little is known on the actual burden and pitfalls of ED bed coordination. Indeed, overcrowded hospitals often lead to inappropriate transfer from ED to less adapted hospital unit or unit with lower level of care. We design the present study to evaluate the occurrence of such step-down units transfer. Methods This prospective study was conducted in a tertiary care academic hospital accounting for 622 licensed beds and an ED census of 45000/year. In 2014, a BM was implemented as a result of a quality improvement program. Focus was made solely on facilitating and improving patient movements form ED to the hospital wards. The investigators extracted data from a 20-days random observation period in February and March 2015, or a total of 231 patients administered by the BM. Results During this period, mean ED census was 131 (±12) patients /day, of which mean hospital admission rate was 20,6 %. BM administered 12 (±3) of these patients daily. Most of these patients were transferred to an appropriate unit (47.6 %) or a short stay unit (32.1%), while 17.7 % were referred to under adapted units and 2.6 % to step down units. Patients’ average length of stay (LOS) was 32 hours. LOS for patients immediately admitted in the ED short stay unit (n=74) was 26.5 (±22) hours, while it took 35.8 (±26) hours to reach an appropriate unit (n=110) and 35.6 (±27.4) to reach a less-appropriate unit (n=41). Interestingly, patients transferred to a non-appropriate unit (n=6) stayed 29.5 (±15.7) hours in the ED. Communications means used by the BM was face-to-face talk almost half of the cases (n=93) and phone calls for the other half (n=115). Discussion and conclusion These results emphasize the complexity of ED flow coordination. Whether or not such coordination is effective on ED overcrowding or patients’ LOS, this preliminary study identifies the frequent use of short stay and under-adapted units instead of optimal bed location. Besides, further research should clarify the impact of these hospitalisations’ pathways on the quality of care. Finally, these observations indicate the urgent need for early determination of patients who could actually be safely transferred to such units. [less ▲]

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See detailCaught in the middle: the Maisierian, a lithic tradition between two worlds
Touzé, Olivier ULg

Conference (2016, January 29)

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See detailUn laboratoire d'auto-immunité paperless: mythe ou réalité?
LUTTERI, Laurence ULg

Conference (2016, January 29)

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See detailCombining acceleration techniques for pricing in a VRP with time windows
Michelini, Stefano ULg; Arda, Yasemin ULg; Küçükaydin, Hande

Conference (2016, January 28)

In this study, we investigate a solution methodology for a variant of the VRP with time windows. The cost of each route depends on its overall duration (including waiting times), while the departure time ... [more ▼]

In this study, we investigate a solution methodology for a variant of the VRP with time windows. The cost of each route depends on its overall duration (including waiting times), while the departure time of a vehicle is a decision variable. Furthermore, each route has a maximum permitted duration. In order to solve this problem with a branch-and-price methodology, we study also the associated pricing problem, an elementary shortest path problem with resource constraints (ESPPRC). Compared to the classical ESPPRC, this variant admits an infinite number of Pareto-optimal states. In order to tackle this, it was shown in [1] that it is possible to represent the total travelling time as a piecewise linear function of the service start time at the depot. Together with this representation, an appropriate label structure and domi- nance rules are proposed and integrated into an exact bidirectional dynamic programming algorithm [2]. It is possible to implement certain acceleration techniques in the dynamic program- ming algorithm used to solve the pricing problem. We focus on two of these techniques: decremental state space relaxation (DSSR), introduced in [3], and ng-route relaxation, in- troduced in [4] and [5]. DSSR aims to enforce gradually the constraints on the elementarity of the path, which adversely affect the number of generated and dominated labels. A set of critical nodes is iteratively populated, and elementarity is enforced only on these critical nodes. When using ng-route relaxation, a neighbourhood is defined for each vertex. Then, the labels are extended such that, thanks to this neighbourhood structure, it is possible to allow only cycles that are relatively expensive and therefore less likely to appear in the optimal solution. In this study, we explore several different strategies used to apply these techniques, for example initialization strategies for the critical vertex set in DSSR, or the size of the neighbourhoods for ng-route relaxation. We also analyze two ways of combining DSSR and ng-route relaxation. The different algorithmic choices are represented as categorical parameters. The categorical parameters, together with the numerical ones, can be tuned with tools for automatic algorithm configuration such as the irace package [6]. We discuss how this column generation procedure can be included as a component in the development of a matheuristic based on the idea in [7], which consists in a collaboration scheme between a branch-and-price algorithm, an exact MIP solver, and a metaheuristic. [less ▲]

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See detailTightening linearizations of non-linear binary optimization problems
Rodriguez Heck, Elisabeth ULg; Crama, Yves ULg

Conference (2016, January 28)

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See detailHéroïsme en clôture : de la contemplative silencieuse à l’amazone chrétienne. Discours et représentations de l’héroïsme féminin sous la plume d’annonciades célestes au XVIIe siècle
Henneau, Marie-Elisabeth ULg

Conference (2016, January 28)

Les annonciades célestes – ordre féminin d’origine génoise fondé en 1604 et implanté en pleine Guerre de Trente Ans sur la Dorsale catholique, face aux territoires protestants – ont produit une nombre ... [more ▼]

Les annonciades célestes – ordre féminin d’origine génoise fondé en 1604 et implanté en pleine Guerre de Trente Ans sur la Dorsale catholique, face aux territoires protestants – ont produit une nombre considérable de chroniques, annales, journaux, mémoires, biographies spirituelles, abrégés de vertus, lettres, autobiographies et autres billets d’humeur, autant de témoignages d’expériences, vécues en espace clos, mais toujours en prise sur le monde, en quête d’éternité, mais sans cesse plongées dans le temps en cours. Des expériences riches et singulières, qui ont eu souvent raison des timidités ou des retenues des intéressées pour aboutir à des relations particulièrement savoureuses où alternent écriture de soi et écriture de l’histoire. Cette documentation inédite et pour une bonne part inexploitée – au contraire des fonds relatifs aux Visitandines – permet, notamment, d’approcher leur conception de la moniale tridentine idéale, mise en scène et en mots par des autrices dont le génie littéraire n’égale sans doute pas les grandes plumes de Port-Royal, mais dont la production révèle tant le large éventail de représentations de soi élaborées par les annonciades que la réception intra muros des discours tenus à leur propos dans le siècle. Contemplatives vouées à une très stricte clôture, ces femmes se voient néanmoins en missionnaires conquérantes d’un espace à (ré)évangéliser. Il s’agira d’étudier d’une part comment elles intègrent les recommandations de leur entourage masculin qui les incitent à la discrétion, à l’effacement, au silence, bref, à un héroïsme comparable à celui de la Vierge, qui dans le secret de sa chambre n’en conçoit pas moins le Sauveur de l’humanité et, d’autre part, et sans que cela soit contradictoire, comment ces cloîtrées vivent les péripéties de leur expansion en aventurières de Dieu et souhaitent, en les narrant, manifester au monde leur héroïsme au service de la Réforme catholique. [less ▲]

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See detailGeoarchaeology of the Ancient Harbour of Utica in a Deltaic Context (2014 and 2015)
Pleuger, Elisa ULg; Gadhoum, Ahmed; Abichou, Hakim et al

Conference (2016, January 28)

Ancient authors mention Utica as a maritime and port city and estimate its origin around the 11th c. BC. However, in the present state of research, no archaeological evidence is earlier than the 9th c. BC ... [more ▼]

Ancient authors mention Utica as a maritime and port city and estimate its origin around the 11th c. BC. However, in the present state of research, no archaeological evidence is earlier than the 9th c. BC, and the location of the Phoenician and Roman port infrastructures remains unknown. Today, the ancient city is located on a promontory in the heart of the Medjerda delta, 10 km inland. Based on this observation, our geoarchaeological research focuses on two main issues: - Was there a marine environment around the promontory of Utica, which could shelter harbour structures? - Why the city, formerly a seaport city, is today located 10 km from the coast? Can the wadi be solely responsible of such an important sediment accumulation in a few millennia? Have any natural or anthropogenic factors influenced this deltaic progradation over the centuries? First results permitted drawing an hypothesis of the coastline during Antiquity to the effect that the Utica promontory was surrounded by the sea in an earlier era. (1) Effectively, the «North compartment» of the delta was covered by the sea at a given time, which will be determined by the next radiocarbon dating. But the sea still brushed the north side of the promontory during the Roman period, as evidenced by the potsherds found in one of the cores. This deep marine bay could be a potential location for harbour infrastructure prior to clogging of the bay by the sediments carried by the wadi. (2) The «corridor» area, materialised by the promontories of Utica and Kalâat el-Andalous, was also invaded by the sea at one time. The many artifacts found in this core attest the occupation of this area, outside of the maximal extension of the ancient city according to A. Lézine. Dating of the marine units in the two cores will bring essential data: * to establish the chronological framework of the retreat of the coastline and of the clogging of the bay; * to understand the passage of the Medjerda into the «North compartment» by the corridor Utica-Kalâat. The geoarchaeological results corroborate ancient sources. Utica was able to welcome important harbour structures, since the presence of a deep marine environment is attested around the promontory, but these remains are probably 5 m deep under the alluvium of the Wadi Medjerda. [less ▲]

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See detailFloating self-assembled microswimmers
Grosjean, Galien ULg; Vandewalle, Nicolas ULg; Hubert, Maxime ULg et al

Conference (2016, January 28)

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See detailContribution of Capillary Electrophoresis and Ion Mobility Spectrometry to probe conformational change during desolvation
Far, Johann ULg; Delvaux, Cédric ULg; Kune, Christopher ULg et al

Conference (2016, January 28)

The transfer of ions from the solution to the gas phase is a critical step to produce « native species ». Coming from a highly solvating medium, ionic species will tend to find a new equilibrium ... [more ▼]

The transfer of ions from the solution to the gas phase is a critical step to produce « native species ». Coming from a highly solvating medium, ionic species will tend to find a new equilibrium conformation in the gas phase. The pathway to reach the thermodynamically stable conformation involves crossing potential barriers of different heights. When these barriers are too high compared to the internal energy of the ions, it will result in “partial memories” (as structural preservation) of the conformation in solution. In order to evaluate the effect of the solvent evaporation and of the various collision processes encountered by the ions in the mass spectrometer, we developed two strategies: The first strategy consists in comparing in a single experiment the shape of the ions in solution and in the gas phase. Data are obtained by coupling Capillary Electrophoresis (CE) with Ion Mobility Mass Spectrometry (IMS). Drift times in solution and in the gas phase are directly compared. Deviations from their correlation points out changes in folding upon desolvatation. Preliminary results show that some of peptides issued from tryptic digest of BSA clearly change their conformation during desolvatation. The second strategy consists to monitor the shape of the different conformers observed for the intact cytochrome C during native runs in capillary electrophoresis and “native” ion mobility mass spectrometry, both using a physiological TRIS acetic pH7 buffer compared to a “MS friendly” ammonium acetate pH7 buffer. Finally as preliminary study, we proposed to use homopolymers for better understanding about the folding behavior in gas phase and the resulting shape of these ions using ion mobility spectrometry. [less ▲]

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See detailHolocene paleoenvironmental reconstructions from Belgian peatbog
Allan, Mohammed ULg; VERHEYDEN, sophie; Le roux, gael et al

Conference (2016, January 27)

Atmospheric deposition is an important part of the global climate system, and plays a key role in the marine and terrestrial biogeochemical cycles as a source for major and trace nutrient elements ... [more ▼]

Atmospheric deposition is an important part of the global climate system, and plays a key role in the marine and terrestrial biogeochemical cycles as a source for major and trace nutrient elements. Reconstruction of atmospheric deposition is crucial to understand the effects of the increased atmospheric depositions induced by humans on the environment and to help understanding Holocene climate variability. This study investigated potential paleoenvironmental proxies provided by major and trace elements and stable isotopes compositions of peat bogs. Peat bog cores were collected from Hautes-Fagnes plateau (Misten bog) (SE-Belgium). The analyses of Rare Earth Elements (REE) and lithogenic element concentrations as well as Nd isotopes were performed by HR-ICP-MS and MC-ICP-MS respectively, in a  7 m peat section representing 7300 years, dated by 210Pb and 14C methods. The Misten bog is highly affected by atmospheric supplies (natural and anthropogenic) and can be used to establish the changes in atmospheric dust during the Mid-Late Holocene. Dust fluxes show pronounced increase at 3200-2800BC, 600BC, AD600, 1000AD, 1200AD and from 1700 AD corresponding to local and regional human activities combined with climate change. Peat humification and testate amoebae were used to evaluate hydroclimatic conditions. The Nd values show large variability, between -5 and –13, identifying three major sources of dust: local soils, distal volcanic and desert particles. Our results provide evidence that climate forcing may be detected in ombrotrophic peat, even for the historical period that is characterised by a mixed climate-human control. [less ▲]

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See detailIn vitro monitoring of human tissue degradation by TD-GC×GC-TOFMS
Stefanuto, Pierre-Hugues ULg; Dubois, Lena ULg; DELPORTE, Géraldine ULg et al

Conference (2016, January 27)

Human rescue dog unit are amongst the most efficient tools to locate cadaver or individuals trapped after a natural disaster. However, the dog training process is long and expensive. Dog trainers are ... [more ▼]

Human rescue dog unit are amongst the most efficient tools to locate cadaver or individuals trapped after a natural disaster. However, the dog training process is long and expensive. Dog trainers are still looking for a better understanding of the dog olfaction matching mechanism to improve their training methods (1). How does the decomposition process differ between organs? Are there specific body parts better suited for dog training? What are the major volatile compounds responsible of the dogs’ match response? In the line of these questions, this project was monitoring the headspace of various human organs during the decomposition process. Five different organs, from five different bodies, were used: heart, lung, liver, kidney, and blood. Each organs were sampled in triplicates and let to decompose in glass jar. Regularly, the headspace of the jar was sampled by dynamic pumping to sorbent tubes that were further be desorbed on a comprehensive two-dimensional gas chromatography system (GC×GC). GC×GC is a powerful analytical tool that allows the resolution of “the smell of death”, i.e. the decomposition odor (2-3). The development of an in vitro approach for decomposition monitoring provided several analytical improvements in the decomposition field. Indeed, the study of dead bodies is always limited in the number of replicates (4). The sampling process developed for this project allows intra and inter corpse comparison with at least triplicates sampling. These comparisons were conducted using advanced chemometric methods (Fisher ratio, PCA, hierarchical analysis…) that will contribute to better understand key parameters of rescue the dog training. References 1. Hoffman et al. FSI (2009) 186, 6-13. 2. Stefanuto et al. CPC (2014) 79, 786-789. 3. Perrault et al. J. Sep. Sci. (2015) 38, 73-80. 4. Stefanuto et al. ABC (2015) 407, 4767-4778 [less ▲]

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See detailQuand Simon obsédait les moines : le scriptorium de Saint-Trond dans la première moitié du XIIe siècle
Schmidt, Kevin ULg

Conference (2016, January 27)

Étudier l’histoire des relations extérieures d’une communauté cloitrée peut sembler paradoxal. En effet, pourquoi des hommes qui ont choisi de vivre loin de la société séculière s’inquiéteraient-ils de la ... [more ▼]

Étudier l’histoire des relations extérieures d’une communauté cloitrée peut sembler paradoxal. En effet, pourquoi des hommes qui ont choisi de vivre loin de la société séculière s’inquiéteraient-ils de la situation du monde extérieur ? Poser la question revient à souligner un fait indéniable, en parfaite contradiction avec la vie monastique : les interactions entre les monastères et le siècle se sont de tout temps avérées intenses, qu’elles soient justifiées par de nécessaires échanges commerciaux, par l’immixtion des laïcs dans la gestion du temporel de la communauté ou, au contraire, des abbés dans la politique régionale. À ce titre, la situation de l’abbaye de Saint-Trond au début du XIIe siècle constitue un excellent exemple. Menacée fréquemment par son avoué, à la merci d’une attaque du duc de Louvain, la communauté trudonnaire dut choisir intelligemment ses alliés et lutter contre ses opposants. Dans ce contexte, étudier et comparer les textes non normatifs produits au sein du scriptorium du monastère durant la 1ère moitié du XIIe siècle (Gesta abbatum Trudonensium, poèmes, traités didactiques ou textes polémiques) permet de mieux comprendre les combats que les moines menaient dans le silence du cloître, avec leurs armes de prédilection que sont la plume et le parchemin. Les textes rédigés au sein de l’abbaye se caractérisent ainsi par une forte réflexion anti-simoniaque, suscitée par les idées réformatrices et le positionnement politique de l’un de ses abbés les plus importants, Raoul (1108-1138). À l’occasion des 3e rencontres doctorales du département de recherche Transition consacrées aux documents, aux méthodes et aux concepts, nous exposerons quelques conclusions provisoires de notre recherche, toujours en cours, et qui, au-delà d’une enquête strictement politico-institutionnelle, doit permettre d’écrire une nouvelle page d’histoire des mentalités monastiques. [less ▲]

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See detailWhat 20 years of phylogenetics teach us: the Last Universal Common Ancestor (LUCA) is not the origin of Life and might have been more complex than we used to believe
Gouy, Richard ULg

Conference (2016, January 27)

The origin of the eukaryotes remains one of the most contentious puzzles in evolution. In the late 1970s, C. Woese discovered Archaea and put an end to the dichotomous view of Life (eukaryote vs ... [more ▼]

The origin of the eukaryotes remains one of the most contentious puzzles in evolution. In the late 1970s, C. Woese discovered Archaea and put an end to the dichotomous view of Life (eukaryote vs prokaryote). Since Woese’s revolution, the Tree of Life (ToL) has been divided into three domains (Bacteria, Archaea and Eukaryota), yet with unclear relationships. Rooting the ToL then became a problem. Indeed, the question of the origin of eukaryotes is directly related to the location of this root, which also affects the nature of the Last Universal Common Ancestor (LUCA). Several scenarios might explain the origin of the eukaryotic cell: (a) the three domains have an independent origin and directly stemmed from the primordial soup; (b) the three domains stemmed from a simple LUCA, and their evolution proceeded by increasing complexity in eukaryotes; (c) the three domains stemmed from a complex LUCA, and their evolution proceeded by simplification in prokaryotes; (d) eukaryotes originated from a fusion event between an archaeon and a bacterium, the latter being the mitochondrion and their other properties evolving after this event; (e) eukaryotes originated from a fusion event between an archaeon and a bacterium, the result being a proto-eukaryote not yet equipped with a mitochondrion. During the last 15 years, technical advances in phylogenetic methods have relocated many simple organisms higher in the ToL, which means that they are actually secondary simplified. However, even the best evolutionary models are not yet able to address difficult phylogenetic issues, whether at shallow depth or at deep evolutionary times. This raises a fundamental question: does simple always mean ancestral? For the time being, the commonly accepted bacterial root for the ToL (in scenario (b)) is still unproven, so that the current consensus can be traced back to the prejudice of Aristotle’s Great Chain of Beings, in which simple organisms are ancestors of more complex life forms. Indeed, during early evolution, there might have been many independently arising lineages, both before and along LUCA, none of them having left extant descendants. The major bottlenecks that occurred as a result of catastrophic events in Earth’s history (e.g., meteorite impacts or snowball Earth periods) might explain why we only have three domains of Life nowadays. Furthermore, extant lineages coalesce to a LUCA that was not necessarily simple and located at the base of the ToL. Instead, it probably lived much later and was more complex than generally acknowledged. [less ▲]

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See detailEvolution of the palaeoenvironment of the Medjerda delta (Tunisia) and geoarchaeology of the ancient city of Utica
Pleuger, Elisa ULg; Abichou, Hakim; Gadhoum, Ahmed et al

Conference (2016, January 27)

Phoenician Utica remains today largely unknown, as is its role in the Phoenician expansion in the western Mediterranean. Aristotle and Pliny the Elder mention Utica as a maritime and port city and ... [more ▼]

Phoenician Utica remains today largely unknown, as is its role in the Phoenician expansion in the western Mediterranean. Aristotle and Pliny the Elder mention Utica as a maritime and port city and estimate its origin around the 11th c. BC. However, in the present state of research, no archaeological evidence is earlier than the 9th c. BC, and the location of the Phoenician and Roman port infrastructures remains unknown. Today, the ancient city is located on a promontory in the heart of the Medjerda delta, 10 km inland. This project proposes an interdisciplinary effort to understand the Medjerda delta landscape changes during the Holocene. It starts from an archaeological problem and proposes the contribution of geoarchaeology to the understanding of the relationship between ancient societies and their environment. The fluvial palaeoenvironments and sedimentary processes are studied through the mechanical extraction of cores (15-20 m deep) to reach the early Holocene. Selected sediment samples are then studied in laboratory, using different and complementary approaches. The location of port infrastructures will bring initial answers to the question of the foundation of the city. The study of river palaeoenvironments of the Medjerda delta during the Holocene aim at a better understanding of the nature of the settlement, as well as the function of the city of Utica over time. This study will also assess the impact of the ancient city on the environment and understand how the city adapted to the mobility of this Mediterranean delta. Furthermore, the analysis of sedimentary processes causing the filling of the harbour basin will lead to speculation about the causes of the abandonment of the structures and more generally the decline of the city in favor of Carthage. It will also examine whether natural or anthropogenic factors have influenced this deltaic progradation over the centuries. [less ▲]

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See detailThe City museum : a concept with multiple interpretations
Postula, Jean-Louis ULg

Conference (2016, January 27)

As early as the second half of the nineteenth century, some major European cities have developed museums to expose their history. This movement has then grown throughout the twentieth century around the ... [more ▼]

As early as the second half of the nineteenth century, some major European cities have developed museums to expose their history. This movement has then grown throughout the twentieth century around the world. At the beginning of the third millennium, the phenomenon is more relevant than ever, as evidenced by numerous projects of creation and renovation of such institutions. Nevertheless, it took a long time before that kind of museums began to be considered as part of a specific museum category, with its own characteristics and challenges. It is only in 1993, at the Museum of London, that representatives of museums devoted to the study of cities met for the very first time, in order “to discuss [their] problems, to develop theories and to promote [their] special place in the museum movement worldwide” (HEBDITCH Max, “Key-note address”, in JOHNSON Nichola (ed.), Reflecting cities, London, 1993, p. 1). The expression “city museum” took shape for this occasion, with the creation at the end of the symposium of a first International Association of City Museums, followed subsequently by other organizations. The purpose of this presentation is to provide an overview of the multiple interpretations and meanings attached to the quite recent concept of “city museum”, examined through its different uses and definitions within the museological literature. The analysis of these speeches will highlight the fact that there are no unanimously established uses of the expression among the specialists. It will also show that, as a museum category, city museum is an object whose identity is still under construction. [less ▲]

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See detailLe game design en amateur en tant que pratique ludique
Hurel, Pierre-Yves ULg

Conference (2016, January 27)

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See detailTravail en laboratoire de niveau de confinement 2 (L2)
Grignet, Christine ULg

Conference (2016, January 26)

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See detailLe notaire dans la régulation sociale des conflits violents dans la Principauté de Liège aux XVIIe et XVIIIe siècles
Drécourt, Aurore ULg

Conference (2016, January 26)

Les actes notariés constituent des sources d’une grande richesse pour l’historien et ont permis de nombreuses études. Inventaires, testaments, contrats de mariage sont autant de documents qui ont ... [more ▼]

Les actes notariés constituent des sources d’une grande richesse pour l’historien et ont permis de nombreuses études. Inventaires, testaments, contrats de mariage sont autant de documents qui ont renouvelé notre connaissance de la vie sociale et économique des populations d’autrefois. Toutefois, les actes réalisés par les notaires sont d’une telle variété qu’ils n’ont pas encore révélé tous leurs secrets. Glissés entre des centaines de documents à valeur économique, certains actes nous renseignent sur la violence de la société d’Ancien Régime et sur les solutions mises en œuvre pour la réguler. Ce genre d’étude s’est appuyé durant des décennies sur des archives judiciaires. Toutefois, il est de plus en plus acquis parmi les historiens de la justice que les populations d’Ancien Régime n’allaient pas systématiquement devant le juge pour régler leurs différends mais préféraient opter pour d’autres stratégies de résolutions de conflits. Le notaire a, à ce titre, joué un rôle majeur. Il est celui devant lequel on établit des accommodements. Il est aussi celui qui retranscrit et authentifie le récit subjectif des victimes, témoins ou agresseurs, qui seront ensuite, selon le choix du comparant, enregistrées ou non au greffe. Aussi l’étude des sources notariales offre-t-elle à l’historien la possibilité de saisir des récits qui ne seraient sans doute jamais parvenues à sa connaissance par la seule étude des archives criminelles. De plus, elles ont l’avantage de présenter des couches plus modestes de la population et de montrer que le judiciaire n’est pas la voie unique, voire préférée, pour régler les conflits. La présente communication propose de montrer toute la richesse de ces documents si peu étudiés par les historiens, le tout dans le cadre de la Principauté de Liège au XVIIe siècle. [less ▲]

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See detailUn nouveau regard sur la tenture des Travaux d’Hercule de Marie de Hongrie (Patrimonio Nacional, série 23)
Laruelle, Anne-Sophie ULg

Conference (2016, January 26)

Les exploits d’Hercule suscitent depuis l’Antiquité de multiples interprétations et constituent l’un des thèmes littéraires et artistiques les plus appréciés à la Renaissance. Plus que toute autre figure ... [more ▼]

Les exploits d’Hercule suscitent depuis l’Antiquité de multiples interprétations et constituent l’un des thèmes littéraires et artistiques les plus appréciés à la Renaissance. Plus que toute autre figure antique, Hercule sert d’exemple aux souverains car il est considéré comme le modèle par excellence de la "vertu active". Ses Travaux sont l’une des sources d’inspiration majeures de la tapisserie flamande au XVIe siècle. Cette communication ambitionne d’apporter un nouvel éclairage sur la tenture en douze pièces achetée en 1535 par la régente des anciens Pays-Bas, Marie de Hongrie, à l’atelier bruxellois Dermoyen. Nous verrons que cette tenture connaît un véritable succès, qui conduit les ateliers flamands à réaliser de nombreuses rééditions jusqu’à la fin du siècle. Notre intervention, fondée sur une méthode déjà bien établie par les spécialistes de la tapisserie, s’articulera autour des quatre composantes principales de ce genre artistique : les pièces existantes et leur iconographie, la manufacture qui les a tissées, les artistes qui en ont fourni les modèles aux liciers, et enfin le commanditaire. [less ▲]

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See detailTailored made degradable synthetic polymers for 3D (bio)printing
Grandfils, Christian ULg

Conference (2016, January 26)

Detailed reference viewed: 61 (4 ULg)