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See detailLa place de l’éthique dans la clinique du lien social
Englebert, Jérôme ULiege; Gesché, Michèle; Kalonji, Johan

Conference (2017, June 09)

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See detailThe roles of competition law in a regulated digital market environment: lessons (not) to learn from related fields of EU regulation
Van Cleynenbreugel, Pieter ULiege

Conference (2017, June 09)

Within the framework of its Digital Single Market (DSM) agenda, the European Union proposes the adoption of new legislative proposals aimed at removing remaining obstacles to digital transactions ... [more ▼]

Within the framework of its Digital Single Market (DSM) agenda, the European Union proposes the adoption of new legislative proposals aimed at removing remaining obstacles to digital transactions. Proposals relate to the abolition of geo-blocking as well as data and copyright portability. Complementing competition law provisions, those initiatives would seek to create the conditions for a competitive e-commerce environment within the EU internal market. In doing so, the Commission implicitly but clearly seeks to replicate a regulatory and policy approach it had taken already from the 1990s onwards when liberalising the energy and electronic communication sectors. It can be submitted that the European Commission, in proposing its DSM regulation strategy and in setting the terms of its e-commerce sector inquiry, has paid insufficient attention so far to the various and complementary roles competition law can play in a more strictly regulated market environment. In an attempt to clarify the scope and role of EU competition law and its enforcement in a digital single market environment and to guarantee its coherent application with the proposed DSM regulations, this paper will reflect on the roles competition law can our should still play in this context. Proceeding in three parts, the first part of the paper will chart the interaction between competition law and market regulation proposals in the EU’s DSM context. Using examples from the geo-blocking, data portability and copyright proposals made, this part highlights how the EU institutions perceive the interaction between competition law provisions and market regulation in this context. On the basis of that analysis, the second part will frame the interaction between competition law and market regulation as perceived in the DSM strategy, by comparing it with earlier examples in the realm of energy and electronic communications. In doing so, this part will identify two important similarities (breaking up barriers to trade and facilitating cross-border competition) as well as two fundamental differences (absence of natural monopolies and of intensely state regulated sectors). Acknowledging those similarities and differences, it will be submitted, allows better to conceptualise the role of competition law in the particular DSM context. To that extent, the third part will present and analyse the tenability of three possible roles competition law can still play against this background. Assessing the advantages and limits of each approach, that part will invite the Commission to take a clearer stance regarding the choice of one of them. [less ▲]

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See detailDiametral dimension and property Omega Bar for spaces Snu
Demeulenaere, Loïc ULiege

Conference (2017, June 08)

Spaces Snu are metrizable sequence spaces defined by Jaffard in the context of multifractal analysis and signal treatment. From a functional analysis point of view, the study of these spaces points out ... [more ▼]

Spaces Snu are metrizable sequence spaces defined by Jaffard in the context of multifractal analysis and signal treatment. From a functional analysis point of view, the study of these spaces points out some topological properties, such as the facts they are locally pseudoconvex in general and locally p-convex in certain cases, Schwartz, and non-nuclear. In this talk, we focus on two topological invariants, namely the diametral dimension (Bessaga, Mityagin, Pelczynski, Rolewicz) and the property "Omega Bar" (Vogt, Wagner). Firstly, we revisit a result of Aubry and Bastin giving the diametral dimension of locally p-convex spaces Snu and extend it to some non-locally p-convex spaces Snu. Secondly, we explain how these developments can be used to prove that a subclass of spaces Snu (among which the locally p-convex ones) verifes the condition Omega Bar. [less ▲]

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See detailUps and downs for SoTL development in a collective project targeting feedback practice enhancement
Verpoorten, Dominique ULiege; Detroz, Pascal ULiege; Mohr, Audrey ULiege et al

Conference (2017, June 08)

The “Feedback First-Year Project” (FFYP) was designed by IFRES (Institute for Training and Research in Higher Education) and the Study Guidance Service at the University of Liège (Belgium) to support ... [more ▼]

The “Feedback First-Year Project” (FFYP) was designed by IFRES (Institute for Training and Research in Higher Education) and the Study Guidance Service at the University of Liège (Belgium) to support First-Year professors’ efforts to think and act upon their current teaching and assessment practice, and possible improvements. Amongst lessons learnt, the presentation pinpoints three major risks that a collective project like FFYP might encounter. Recommendations likely to mitigate these risks are proposed, in case others would like to replicate the experience. [less ▲]

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See detailExemples tirés de la pratique: les phanères
Hayette, Marie-Pierre ULiege

Conference (2017, June 08)

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See detailFatigue resistant designs using stress-based topology optimization
Collet, Maxime ULiege; Bauduin, Simon ULiege; Fernandez Sanchez, Eduardo Felipe ULiege et al

Conference (2017, June 08)

Stress based topology optimization has received great interest since almost 20 years because of the innovative designs that can be achieved to answer strength requirements. Fatigue is an important mode of ... [more ▼]

Stress based topology optimization has received great interest since almost 20 years because of the innovative designs that can be achieved to answer strength requirements. Fatigue is an important mode of failure in mechanical engineering and accounting for it as soon as the early stage of design using topology optimization sounds primordial. Literature reports many good results for shape optimization [Mrzyglod & Zielinsky(2006)] whereas in the field of topology optimization several authors have shown that considering fatigue in an optimization framework leads to more relevant solutions where fluctuating loads are involved [Holmberg E.(2015), Collet et al(2016), Svärd(2015)]. In order to check the good behavior of the implementation, we first investigate the implementation of an advanced fatigue criterion, i.e. the multiaxial Dang Van criterion [Dang Van et al(1989)], in the framework of a density-based topology optimization problem. The choice of this fatigue criterion is justifed by its good applicability in automotive or aeronautic industry as well as its relevancy with respect to experimental results. We present the sensitivity analysis with stress constraints and present some classical benchmarks to illustrate the behavior of the optimized solution. In a second time, we introduce the fatigue resistance in the well-known microstructural design [Sigmund (1999)]. The new additive manufacturing techniques allow to fabricate components exhibiting architectured materials. In this perspective, ensuring the fatigue resistance of the cellular material will by extension ensure the structural integrity of the overall structure itself. Both types of optimization framework are evaluated in term of their numerical performances and are compared to classical results generated by a regular stress-based topology optimization. Finally, the results are 3D-printed to assess for their manufacturability. [less ▲]

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See detailRetours d’expérience d’un partenariat Université - Agences de l'Eau pour une gestion de la qualité des eaux de surface
Deliège, Jean-François ULiege; Everbecq, Etienne ULiege; MAGERMANS, POL ULiege et al

Conference (2017, June 08)

Un partenariat innovant a été établi entre une équipe de recherche universitaire (unité R&D de l’Aquapôle, Université de Liège) et des pouvoirs publics ayant dans leurs attributions la protection des ... [more ▼]

Un partenariat innovant a été établi entre une équipe de recherche universitaire (unité R&D de l’Aquapôle, Université de Liège) et des pouvoirs publics ayant dans leurs attributions la protection des ressources en eau et des milieux aquatiques (Agences de l’Eau françaises, Administrations wallonne et flamande). L’objectif principal de ce partenariat est la gestion des ressources par les Agences et Administrations en les dotant d’un outil innovant et opérationnel d’aide à la décision leur permettant de remplir leurs missions régionales (programmes d’intervention, SDAGE, …), nationales et internationales (DCE, rapportage européen, …). Pour atteindre cet objectif, le partenariat se base sur le développement d’une suite logicielle répondant aux attentes des opérateurs. Cette stratégie de développement, basée sur les besoins des partenaires, est au bénéfice direct de la restauration de la qualité des milieux aquatiques. [less ▲]

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See detailProbing Single Molecules with the AFM: Force, Motion, Dynamics, and Function
Duwez, Anne-Sophie ULiege

Conference (2017, June 07)

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See detailTesting linguistic purity myth with field surveys
Baiwir, Esther ULiege

Conference (2017, June 07)

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See detailTopology optimization of mechanical components fabricated by additive manufacturing for a Shell Eco Marathon vehicle
Alarcon Soto, Pablo ULiege; Collet, Maxime ULiege; Bauduin, Simon ULiege et al

Conference (2017, June 07)

Since 2004, a team of students and researchers of University of Liege takes part to the Shell Eco Marathon race with a lightweight electric vehicle. The goal of this pedagogical project is to design ... [more ▼]

Since 2004, a team of students and researchers of University of Liege takes part to the Shell Eco Marathon race with a lightweight electric vehicle. The goal of this pedagogical project is to design, fabricate and operate a vehicle exhibiting the least energy consumption. A key factor to reduce the energy consumption is to minimize the vehicle mass. Besides the body structure made of CRFP, engineers have also to focus on the weight reduction of any mechanical parts of the powertrain, transmission and of rolling gear. The combination of topology optimization with additive manufacturing techniques allows to propose innovative designs exhibiting a high performance to weight ratio. Topology optimized designs are often characterized by a high geometrical complexity that is not possible to manufacture without 3D printing. This work presents the CAE design methodology that was developed to combine topology and shape optimization with 3d printing manufacturing. Novel developments both in shape and topology optimization have also been realized for the specific character of these components. The design methodology is illustrated with several applications of components of our new Eco Marathon prototype. They include a support for electric traction motors and different torque arms of the steering mechanism to be implemented in the new 2017 vehicle. The presentation is going to show the different design steps from the specifications and the formulation of the design problem to the 3D-printing of the parts: the topology optimization, interpretation and CAD reconstruction, shape optimization and detailed finite element verification of the solution. The optimization is performed thanks to the commercial software NX-TOPOL and the final CAD design is reconstructed in the CATIA environment software after a smoothing procedure in the NX-CAD environment. We show that the final design can be 3D-printed and a comparison with a design produced using traditional design approach is provided. [less ▲]

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See detailLes Nodo/Paranodopathies
MILANTS, Christophe ULiege

Conference (2017, June 06)

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See detailIncremental-secant mean-field-homogenization method for elasto-visco-plastic materials systems
Wu, Ling ULiege; Bidaine, Benoît; Adam, Laurent et al

Conference (2017, June 05)

With the increasing use of engineered and/or heterogeneous materials, there is a need to develop multi-scale methods in order to predict with accuracy structural behaviors. One computationally efficient ... [more ▼]

With the increasing use of engineered and/or heterogeneous materials, there is a need to develop multi-scale methods in order to predict with accuracy structural behaviors. One computationally efficient multi-scale method is the mean-field homogenization (MFH) one, which considers as homogenized strain and stress fields the volume average of their respective counterparts in the different composite material phases. Although originally developed for elastic materials, MFH methods have been extended to non-linear behaviors by considering a linear comparison composite (LCC). To define this LCC, the authors have developed an incremental-secant mean-field homogenization formulation, for which the residual stress and strain states reached in the phases upon a fictitious elastic unloading are considered as starting point to apply the secant method [1, 2]. The mean stress fields in the phases are then computed using isotropic secant tensors, which are naturally used to define the LCC. The incremental-secant formulation has several advantages: it can handle non-radial loading conditions, it avoids the isotropisation step required by other incremental methods, and it can handle softening behaviors in an accurate way. In this work, we present an extension of the incremental-secant mean-field homogenization to elasto-visco-plastic composite materials. The formulation can account for both first and second statistical moment estimates during the evaluation of the visco-plastic flow. The method predictions are compared to finite element (FE), to Fast-Fourier-Transform (FFT), and to experimental results, to demonstrate the accuracy of the method. References [1] Wu, L., Noels, L., Adam, L., & Doghri, I. (2013). A combined incremental-secant mean-field homogenization scheme with per-phase residual strains for elasto-plastic composites. International Journal of Plasticity, 51, 80-102 [2] Wu, L., Noels, L., Adam, L., & Doghri, I. (2013). An implicit-gradient-enhanced incremental-secant mean- field homogenization scheme for elasto-plastic composites with damage. International Journal of Solids and Structures, 50(24), 3843–3860 [less ▲]

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See detailStochastic multiscale method applied to thermo-elasticity of polycrystalline micro-structures
Wu, Ling ULiege; Lucas, Vincent; Golinval, Jean-Claude ULiege et al

Conference (2017, June 05)

A stochastic 3-scale approach is developed in order to predict the probabilistic behavior of micro-resonators made of polycrystalline materials. In this method, stochastic volume elements (SVEs) [1] are ... [more ▼]

A stochastic 3-scale approach is developed in order to predict the probabilistic behavior of micro-resonators made of polycrystalline materials. In this method, stochastic volume elements (SVEs) [1] are defined from Voronoï tessellations using experimental measurements of the grain size, orientation, and surface roughness [2]. For each SVE realization, the mesoscopic apparent thermo-elastic properties such as elasticity tensor, thermal conductivity tensor, and thermal dilatation tensor are extracted using a coupled homogenization theory [3, 4]. A stochastic model is then built from the homogenized properties extracted from Voronoï tessellations using a moving window technique in order to generate spatially correlated meso-scale random fields. These random fields are then used as input for stochastic finite element simulations. As a result, the probabilistic distribution of micro-resonator properties can be extracted. The applications are two-fold: either a stochastic thermo-elastic homogenization is coupled to thermo-elastic 3D models of the micro-resonator in order to extract the probabilistic distribution of the Quality factor of the micro-resonators [5], or a stochastic second-order mechanical homogenization is coupled to a plate model of the micro-resonator in order to extract the effect of the uncertainties related to the surface roughness of the polycrystalline structures [1]. References [1] Lucas, V., Golinval, J.-C., Voicu, R., Danila, M., Gravila, R., Muller, R., Dinescu, A., Noels, L., & Wu, L. (in press). Propagation of material and surface profile uncertainties on MEMS micro-resonators using a stochastic second-order computational multi-scale approach. International Journal for Numerical Methods in Engineering. [2] Ostoja-Starzewski, M., Wang, X. (1999) Stochastic finite elements as a bridge between random material microstructure and global response, Computer Methods in Applied Mechanics and Engineering, 168, 35-49, 1999 [3] Temizer, I., Wriggers, P. (2011) Homogenization in finite thermoelasticity, Journal of the Mechanics and Physics of Solids 59 (2), 344-372 [4] Nguyen, V. D., Wu, L., Noels, L. (in press). Unified treatment of boundary conditions and efficient algorithms for estimating tangent operators of the homogenized behavior in the computational homogenization method. Computational Mechanics. [5] Wu, L., Lucas, V., Nguyen, V. D., Golinval, J.-C., Paquay, S., & Noels, L. (2016) A Stochastic Multi-Scale Approach for the Modeling of Thermo-Elastic Damping in Micro-Resonators. Computer Methods in Applied Mechanics & Engineering, 310, 802-839. [less ▲]

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See detailTransitive structures with generic/indefinite O-arguments in English: An emergent antipassive construction?
Lambert, Céline ULiege; Plumat, Coraline ULiege; Van linden, An ULiege

Conference (2017, June 03)

This corpus study focuses on transitive structures that contain generic/indefinite O-arguments in Present-day English, cf. (1) featuring things and (2) featuring folks, and investigates to what extent ... [more ▼]

This corpus study focuses on transitive structures that contain generic/indefinite O-arguments in Present-day English, cf. (1) featuring things and (2) featuring folks, and investigates to what extent these show reduced transitivity and backgrounded discourse status in the sense of Hopper and Thompson (1980). As can be observed in (1) and (2), the constructions studied show a high degree of transitivity on most of the transitivity parameters proposed in Hopper and Thompson (1980), apart from the individuation of the O-argument. For example, (1) and (2), score high in terms of kinesis, volitionality, agency and affirmation, but their O-arguments have generic reference. In addition, the constructions examined generally form part of backgrounded discourse. In (1) and (2), rather than pushing the story-line further, the structures render descriptions of a person’s character and behaviour that make them eligible for a specific task or job. (1) Iyad Allawi is strong and tough with a hard edge. He’ll make things better. (USnews) (2) The fact that he cut such a handsome figure tended to make folks forget that he didn’t know it all. He looked and acted like a man destined for great things, and most people tend to be swayed by a man’s opinion of himself. (USbooks) More generally, the data suggest that in the constructions studied, the noun phrases coding O-participants merely function as filler elements, used to satisfy the argument-structure requirements imposed by the verb. In view of them realizing non-individuated O-arguments in backgrounded stretches of discourse, we propose that the structures focused on could be analysed as emergent (Hopper 1991) antipassive constructions, which won’t necessarily develop into canonical antipassive constructions over time. In fact, there is a good chance that they will never shed overt expression of the (original) O-argument. In addition to things and folks, this study examines the nouns people, stuff and shit(s) in the role of O-participant, thus factoring in an animacy variable (animate people, folks versus inanimate things, stuff and shit(s)), as well as a register variable (neutral people, things versus informal to slang folks, stuff, and shit(s)). Specifically, the queries used allowed for up to two intervening words between any verb form and the noun studied; for each noun 250 relevant examples were analysed, drawn from random samples from the US subcorpora of WordBanksOnline. References Hopper, P. 1991. On some principles of grammaticization. In Traugott & Heine (eds), Approaches to Grammaticalization, vol. 1: Focus on Theoretical and Methodological Issues, 17-35. Amsterdam: John Benjamins. Hopper, P. & S.A. Thompson. 1980. Transitivity in grammar and discourse. Language 56 (2): 251-299. [less ▲]

Detailed reference viewed: 32 (4 ULiège)
See detailAccessibilité/disposition au traitement et processus de désistance : articulation des principes théoriques du Good Lives Model à la réalité clinique
Devillers, Bérengère ULiege; Henrard, Noémie ULiege; Corneille, Serge ULiege

Conference (2017, June 02)

Le Good Lives Model (GLM) s’attèle au développement et à l’amélioration du bien-être et d’une identité personnelle positive en tenant compte des caractéristiques de l’environne- ment. Il s’agit notamment ... [more ▼]

Le Good Lives Model (GLM) s’attèle au développement et à l’amélioration du bien-être et d’une identité personnelle positive en tenant compte des caractéristiques de l’environne- ment. Il s’agit notamment de guider l'individu dans l’élaboration d’un plan de vie en prenant en compte ses besoins humains fondamentaux ainsi que les ressources et compétences nécessaires pour y arriver. Le G.L.M. va donc inciter l’acquisition de ressources et la réduc- tion de la récidive, en tant que celle-ci constitue un obstacle au bien-être et à l’accomplisse- ment personnel. Plus spécifiquement, le G.L.M. est efficace pour surmonter certaines limites inhé- rentes aux approches traditionnelles grâce, notamment, au soutien du processus de désis- tance, fruit d’interactions complexes entre des facteurs subjectifs, environnementaux et sociaux, et à l’amélioration de la disposition/accessibilité au traitement qui renvoie à la présence de caractéristiques (états et dispositions) dans le chef de l’usager, mais aussi de la situation thérapeutique. Il est donc de la responsabilité des intervenants d’adapter leurs traitements aux besoins des usagers plutôt que d’exiger des usagers qu’ils adaptent leurs besoins aux compétences limitées des intervenants. Lors de cette communication, nous souhaitons, d’une part, articuler ces différents repères théoriques à un suivi thérapeutique, d’un auteur d’infractions à caractère sexuel, réalisé en milieu pénitentiaire et, d’autre part, interroger et souligner les effets potentiels de la posture professionnelle sur les facteurs subjectifs impliqués dans la désistance. [less ▲]

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See detailWhat do Comics do to Graphic Novels? Remediating Old Comics
Crucifix, Benoît ULiege

Conference (2017, June 02)

A widely debated object, the graphic novel has catalyzed anxieties about changes within the comics world, postulating something of a radical break with its past. Albeit with great nuance, Jan Baetens and ... [more ▼]

A widely debated object, the graphic novel has catalyzed anxieties about changes within the comics world, postulating something of a radical break with its past. Albeit with great nuance, Jan Baetens and Hugo Frey put forward the bold argument that graphic novels constitute not only a “special type of comics” or a genre, but perhaps even a new medium. At the same time, they also repeatedly hint at how graphic novels are traversed by references to the past of comics, at times lapsing into a constraining retromania. This talk seeks out to dig into these questions by focusing on the remediation of the comic strip within two recent American graphic novels: Daniel Clowes’s "Ice Haven" and Cole Closser’s "Little Tommy Lost". Both works recuperate the medial body of the comic strip within their structure, demonstrating a self-reflexive historical awareness that redraws ‘old’ comics into its cultural make-up. Considering the remediation of the comic strip within the graphic novel, this talk analyzes how remediation might work ‘within’ a medium, reinvigorating the concept in a historical but medium-specific perspective that accounts for the dynamically changing identities of a medium. [less ▲]

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See detailSexting : pratiques adolescentaires à risque de violences ?
Glowacz, Fabienne ULiege

Conference (2017, June 02)

La violence cybernétique dans les couples d’adolescents est une forme de violence recourant aux nouvelles technologies pouvant comprendre deux versants, l’un d’agression (impliquant par exemple des ... [more ▼]

La violence cybernétique dans les couples d’adolescents est une forme de violence recourant aux nouvelles technologies pouvant comprendre deux versants, l’un d’agression (impliquant par exemple des insultes, humiliations et menaces en ligne vis-à-vis du partenaire) et l’autre de contrôle (impliquant la surveillance en ligne des activités en ligne et hors-ligne du partenaire). Dans le cadre de cette communication, c’est la pratique de sexting, les dynamiques relationnelles et les risques s’y rapportant qui seront abordés à partir d’une part des données d’une enquête menée auprès d’une population d’adolescents et d’autre part, de présentations de vignettes cliniques. La pratique de sexting lors de l’adolescence et le début de l’âge adulte jouerait un rôle dans l’expression de la sexualité et le recours aux textos et sextos serait relativement répandu tant chez les garçons que chez les filles. Il peut dès lors s’inscrire en tant que modalités d’interactions relationnelles et sexuelles négociées passant par la voie de l’image mettant en lumière l’ambiguité de « la proximité et de l’intimité à distance ». Il a cependant été montré que le sexting peut être associé à des conduites à risques et du harcèlement sexuel. Au terme de la présentation, nous envisagerons comment construire la prévention et les interventions par rapport à ces nouvelles formes de dynamiques relationnelles et de violences sexuelles. [less ▲]

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See detailViolence entre partenaires : Quel est le fonctionnement psychologique de l’homme auteur de violence sexuelle par rapport aux autres types de violence conjugale ?
Di Piazza, Laetitia ULiege; Blavier, Adelaïde ULiege

Conference (2017, June 02)

À l’heure actuelle, en dépit de nombreuses recherches entreprises à un niveau international, le rôle de plusieurs facteurs intervenant dans la violence conjugale demeure toujours mal compris. L’objectif ... [more ▼]

À l’heure actuelle, en dépit de nombreuses recherches entreprises à un niveau international, le rôle de plusieurs facteurs intervenant dans la violence conjugale demeure toujours mal compris. L’objectif principal de cette recherche est d’apprécier la présence ou l’absence, de caractéristiques psychologiques spécifiques ainsi que leurs liens afin de voir s’il existe une particularité qui différencierait les hommes auteurs de violence sexuelle par rapport aux autres types de passage à l’acte violent au sein du couple (psychologique et physique). Notre méthodologie repose sur l’administration de questionnaires d’auto-évaluation et du test de Rorschach auprès de 56 hommes auteurs de violence sur leur partenaire, et ce avant leur entrée dans un programme thérapeutique de groupe. L’alexithymie, ou difficulté à décrire et/ou à exprimer ses émotions, a été évaluée par la Toronto Alexithymia Scale (TAS-20). Le niveau de dépression a, quant à lui, été mesuré par le Beck Depression Inventory (BDI). Enfin, la Barratt Impulsivity Scale (BIS-11) a été utilisée pour estimer l’impulsivité. Comparés à la population générale, nous observons une augmentation des troubles alexithymique et dépressif chez les participants. En outre, il existe des corrélations significatives entre les différentes caractéristiques psychologiques étudiées. Ces premiers constats confirment l’existence d’un lien entre le trouble alexithymique et la violence conjugale tel que démontré dans une étude similaire. Notre discussion approfondira l’analyse précise des cas liés à de la violence sexuelle ainsi que les implications cliniques. [less ▲]

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See detailThe diachrony of polysemy networks. Cognitive and cultural motivations for the semantic extension of time-related lexemes in Ancient Greek and Ancient Egyptian – Coptic
Georgakopoulos, Athanasios ULiege; Polis, Stéphane ULiege

Conference (2017, June 02)

This paper aims at contrasting the semantic extension of time-related lexemes in Ancient Greek and Ancient Egyptian – Coptic in order to identify shared cognitive motivations and to assess the potential ... [more ▼]

This paper aims at contrasting the semantic extension of time-related lexemes in Ancient Greek and Ancient Egyptian – Coptic in order to identify shared cognitive motivations and to assess the potential impact of cultural factors on the evolution of this lexical field in both languages. In doing so we first take as a point of departure semantic networks inferred from synchronic polysemy data in large language samples, such as Youn et al. (2016) and CLICS (List et al., 2014). In a second step, we identify the lexemes that lexicalize meanings associated with DAY/DAYTIME/TIME in Ancient Greek (8th – 1st c. BC) and Ancient Egyptian (26th c. BC – 10th c. AD), two languages with significant diachronic material. The data are extracted from dictionaries, grammars, and from the Perseus digital library (http://www.perseus.tufts.edu/hopper/) for Ancient Greek, and from the Thesaurus Linguae Aegyptiae (http://aaew.bbaw.de/tla/), the Ramses corpus (http://ramses.ulg.ac.be), and Coptic etymological dictionaries for Ancient Egyptian. Based on this diachronic material we describe the semantic extensions of time-related lexemes and map them onto the synchronic polysemy networks. In a final step, our results are checked against The Catalogue of Semantic Shifts in the Languages of the World (http://semshifts.iling-ran.ru/). Fig. 1 exemplifies how meaning extension may be added to polysemy networks. A diachronic analysis reveals that, for the Ancient Greek lexical unit hṓra, the meaning ‘time’ is historically prior to the meaning ‘hour.’ Accordingly, we may add a directed arrow representing the directionality of change from ‘time’ to ‘hour.’ Similarly, Ancient Egyptian data points to an extension of the polysemy network of the lexical unit tr – originally meaning ‘time,’ ‘moment in time’ – to ‘season’ (cf. Coptic ⲧⲏ tê ‘time, season’). One can then describe the cognitive motivations (e.g., metaphor, metonymy, etc.) for meaning extensions and analyze the cultural factors underlying the observed evolutions. In the case of the Greek word hṓra, for instance, a metonymic motivation between TIME and HOUR could be established. Finally, the analysis can be refined by searching in the corpus bridging contexts that allow such extensions of the polysemy networks of content items. The approach adopted here is closely connected to the semantic map method, which has recently shifted its focus from the study of the polysemic patterns of grammatical morphemes (in this respect, see, e.g., Haspelmath, 2003) to the study of lexical items (e.g., François, 2008, Perrin, 2010, Wälchli and Cysouw 2012, and Georgakopoulos et al., 2016). As such, our paper has also a methodological bearing on the semantic map model, both because of its focus on content words and on diachrony (see van der Auwera, 2008; Narrog, 2010; Luraghi, 2014; Juvonen and Koptjevskaja-Tamm, 2016). All things considered, this diachronic take on the polysemic networks of lexemes belonging to a particular semantic domain offers a new perspective on dealing with the question of the directionality of meaning change. [less ▲]

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See detailLa violence sexuelle entre partenaires et la réaction judiciaire : les enseignements d’une vaste recherche statistique portant sur les pratiques judiciaires belges en matière de violence conjugale
Vanneste, Charlotte ULiege

Conference (2017, June 02)

La présente contribution se base sur les informations rassemblées dans le cadre d’une recherche à grande échelle demandée en 2013 par le Collège des Procureurs Généraux, instance chargée en Belgique de ... [more ▼]

La présente contribution se base sur les informations rassemblées dans le cadre d’une recherche à grande échelle demandée en 2013 par le Collège des Procureurs Généraux, instance chargée en Belgique de l’élaboration de la politique criminelle en concertation étroite avec le Ministre de la Justice. L’objectif était d’évaluer les pratiques judiciaires développées dans l’ensemble des arrondissements judiciaires belges en application de la circulaire de 2006 qui avait introduit en matière de violence dans le couple, des directives de politique criminelle tout à fait nouvelles. La recherche a permis l’analyse des données statistiques enregistrées dans le système informatique des parquets correctionnels concernant une cohorte de près de 40.000 prévenus signalés durant l’année 2010 pour au moins un fait survenu dans un contexte de violence conjugale. L’objectif de cette communication est d’examiner dans quelle mesure cette forme particulière de violence dans le couple qu’est la violence sexuelle est effectivement signalée aux parquets correctionnels et prise en compte par les autorités judiciaires, ceci au regard des autres formes de violence conjugale. L’analyse croisée des données relatives au profil socio-démographique et judiciaire de la population concernée, aux décisions judiciaires prises en réponse à ces situations et aux effets observables en termes de récidive fournissent en la matière des enseignements tout à fait inédits. [less ▲]

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See detailViolences sexuelles dans les relations amoureuses des adolescents : quelles perspectives de prévention et d’intervention ?
Courtain, Audrey ULiege; Glowacz, Fabienne ULiege

Conference (2017, June 02)

La présente communication a pour objectif de faire un état des lieux des violences sexuelles (VS) que les adolescents et jeunes adultes peuvent agir ou subir dans leurs relations amoureuses, de mettre ... [more ▼]

La présente communication a pour objectif de faire un état des lieux des violences sexuelles (VS) que les adolescents et jeunes adultes peuvent agir ou subir dans leurs relations amoureuses, de mettre cette VS en perspective avec les attitudes que les jeunes ont vis-à-vis de celle-ci, et de questionner les manifestations traumatiques. Un questionnaire a été administré en passation groupale à des étudiants (N>1000, 15-25 ans) en Belgique francophone reprenant trois outils : le CADRI (Conflict in Adolescent Dating Relationships Inventory ; Wolfe et al., 2001), l’ATDVS (Attitudes Toward Dating Violence Scale ; Price & Byers, 1999) et l’échelle d’Horowitz sur l’impact des événements traumatisants (Horowitz et al, 1979 ; Brunet et al., 2003). Après un descriptif des prévalences de VS agies et subies, ainsi que des attitudes des participants, et des manifestations traumatiques, nous traiterons des liens entre les VS et les attitudes afférentes, en termes de perpétration et de victimisation. Aussi, nous questionnons les liens entre les attitudes relatives aux VS et les manifestations traumatiques. Tout au long de nos analyses, les différences de genre seront considérées. Les résultats permettront d’envisager de nouvelles perspectives préventives et cliniques ajoutant à l’approche des violences psychologiques et physiques celle des violences sexuelles dans les relations amoureuses des adolescentes analysées sous le prisme des attitudes et du trauma [less ▲]

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See detailCellwise robust regularized discriminant analysis
Aerts, Stéphanie ULiege; Wilms, Ines

Conference (2017, June 02)

Quadratic and Linear Discriminant Analysis (QDA/LDA) are the most often applied classification rules under normality. In QDA, a separate covariance matrix is estimated for each group. If there are more ... [more ▼]

Quadratic and Linear Discriminant Analysis (QDA/LDA) are the most often applied classification rules under normality. In QDA, a separate covariance matrix is estimated for each group. If there are more variables than observations in the groups, the usual estimates are singular and cannot be used anymore. Assuming homoscedasticity, as in LDA, reduces the number of parameters to estimate. This rather strong assumption is however rarely verified in practice. Regularized discriminant techniques that are computable in high-dimension and cover the path between the two extremes QDA and LDA have been proposed in the literature. However, these procedures rely on sample covariance matrices. As such, they become inappropriate in presence of cellwise outliers, a type of outliers that is very likely to occur in high-dimensional datasets. We propose cellwise robust counterparts of these regularized discriminant techniques by inserting cellwise robust covariancematrices. Ourmethodologyresultsinafamilyofdiscriminantmethods that are robust against outlying cells, cover the gap between LDA and QDA and are computable in high-dimension. [less ▲]

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See detailIntérêt de la cryothérapie chez le sportif
Kaux, Jean-François ULiege

Conference (2017, June 02)

La thérapie par le froid est couramment utilisée comme une procédure pour soulager les symptômes douloureux, particulièrement dans les maladies inflammatoires. La cryothérapie corps entier consiste en une ... [more ▼]

La thérapie par le froid est couramment utilisée comme une procédure pour soulager les symptômes douloureux, particulièrement dans les maladies inflammatoires. La cryothérapie corps entier consiste en une exposition à l’air très froid (maintenue entre -110 °C et -140 °C) en cryochambre spéciale, généralement pendant 2 minutes. En médecine sportive, la cryothérapie corps entier a gagné en popularité comme méthode améliorant la récupération ou accélérant la guérison des blessures. Malheureusement, il n’y a peu de documents relatifs à l’application de ce traitement chez les athlètes. [less ▲]

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See detailSegmentation of the LBO market based on projects' risk and return characteristics
Bonesire, Thomas ULiege

Conference (2017, June 02)

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See detailPRP & arthrose
Kaux, Jean-François ULiege

Conference (2017, June 02)

Les injections de Plasma Riche en Plaquettes (PRP) dans le traitement de diverses pathologies arthrosiques semblent se développer comme un nouveau traitement de pointe. Sur base de ce constat, nous avons ... [more ▼]

Les injections de Plasma Riche en Plaquettes (PRP) dans le traitement de diverses pathologies arthrosiques semblent se développer comme un nouveau traitement de pointe. Sur base de ce constat, nous avons relevé dans la littérature, les conditions de protocoles d’optimisation du traitement du PRP dans les lésions cartilagineuses. [less ▲]

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See detailThéories implicites de personnalité et mécanismes de désengagement moral : Analyse différentielle des cognitions d’auteurs présumés selon la culpabilité auto-révélée et la qualification judiciaire des faits d’infractions sexuelles sur mineurs
Garcet, Serge ULiege

Conference (2017, June 02)

Les unités cognitivo-affectives qui sous-tendent l’adaptation à l’environnement, et particulièrement les mécanismes d’évaluation, de réflexion et de régulation des comportements et de leurs conséquences ... [more ▼]

Les unités cognitivo-affectives qui sous-tendent l’adaptation à l’environnement, et particulièrement les mécanismes d’évaluation, de réflexion et de régulation des comportements et de leurs conséquences, sont des variables à prendre en compte lorsque l’on aborde le passage à l’acte et la réitération des comportements d’agression sexuelle. Une meilleure compréhension de ces processus et de leurs contenus (catégorisations, théories implicites de personnalité, scripts, schémas) affine l’approche des comportements d’agression sexuelle. Elle améliore également l’intervention judiciaire, par une meilleure prise en compte des risques potentiels, et l’action thérapeutique par l’identification de leviers susceptibles d’initier le changement. Parmi ces mécanismes autorégulateurs, les processus de justification et de reconstruction cognitive qui inhibent les comportements perçus comme immoraux (Sykes et Matza ; Bandura & al. ; Barriga et Gibbs ), et regroupés sous le label de « mécanismes de neutralisation morale » sont particulièrement intéressants puisqu’ils ont pour fonction d’atténuer la dissonance cognitive chez l’auteur et rendre acceptable voire légitimer les comportements d’agressions sexuelles. Ces mécanismes de désengagement peuvent être identifiés au travers des théories implicites de personnalité (TIP) observables dans les discours des auteurs à l’égard de leurs victimes. La présente étude a consisté à analyser un ensemble de 470 corpus de justifications recueillis lors des premières auditions policières de 60 auteurs présumés d’infractions à caractère sexuel sur mineurs, en aveu ou non, afin d’identifier les différentes représentations (TIP) auxquelles ils ont eu recours dans le but d’envisager comment ces représentations implicites alimentent par leurs contenus les processus cognitifs de désengagement moral. La qualification présumée des faits et le moment judiciaire (information ou instruction) durant lequel se déroule l’audition ont aussi été pris en compte afin de mesurer l’éventuelle incidence de ces variables sur les modes préférentiels de justification et de neutralisation. Chacune des auditions a été analysée au moyen d’une grille d’interprétation construite sur la base des théories implicites de la personnalité consacrées aux agresseurs sexuels de Ward & Keenan (1999). 470 corpus ont été identifiés et regroupés selon les différentes théories implicites de personnalité du modèle de Ward & Keenan. Les différents corpus ont également été croisés avec les échelles des cognitions d’Abel & al. (1989) et les formes du déni (Facets of Sexual Offender Denial - FoSOD) de Schneider et Wright (2001). Dans un second temps, les différents contenus implicites associés aux corpus ont été mis en perspective avec les mécanismes de neutralisation morale mais aussi avec la nature des faits reprochés, le moment judiciaire et la présence d’aveu ou non afin de dégager d’éventuels modes préférentiels de désengagement. Les résultats obtenus mettent en évidence l’existence de différents processus de justification qui sont autant d’illustration des processus de désengagement moral des auteurs d’infraction à caractère sexuel que ce soit dans une perspective d’atténuation de la culpabilité face au système judiciaire ou de réduction de la dissonance cognitive. Il existe également des profils différentiels de théories implicites de personnalité et de processus de neutralisation morale entre les sujets selon qu’ils soient en aveux ou non et selon la qualification des faits incriminés. Le moment de la procédure durant lequel le sujet a été auditionné n’a par contre pas d’impact. L’étude contribue ainsi au développement d’outils psychométriques susceptibles de rendre compte de la façon dont les auteurs d’infractions sexuelles se représentent et justifient leurs comportements à l’égard des victimes mais elle ouvre également des perspectives par rapport à l’analyse que nous pouvons faire du discours de l’auteur, de son éventuelle crédibilité par la prise en compte des mécanismes préférentiels de désengagement de sa responsabilité. [less ▲]

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See detailSuperconducting weak links created by electromigration
Silhanek, Alejandro ULiege

Conference (2017, June 01)

In this presentation, we explore in-situ controlled electromigration to fabricate superconducting weak links. We show evidence that in Al a transition from thermally assisted phase slips (TAPS) to quantum ... [more ▼]

In this presentation, we explore in-situ controlled electromigration to fabricate superconducting weak links. We show evidence that in Al a transition from thermally assisted phase slips (TAPS) to quantum phase slips may takes place when the effective cross section becomes smaller than ~150 nm^2. In the regime dominated by quantum phase slips the nanowire loses completely its capacity to carry current without dissipation, even at the lowest possible temperature. We also discuss the origin of negative magnetoresistance at low magnetic fields in the bow-tie shaped constrictions. Strikingly, the detrimental effect caused by the repeated electromigration can be healed by simply inverting the current direction. These findings reveal perspectives of the proposed fabrication method for exploring various fascinating superconducting phenomena in atomic size constrictions. [less ▲]

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See detailQuand l'enfant révèle un abus sexuel : le vécu du couple, ses fonctions et conséquences
Gallo, Alicia ULiege; Wertz, Céline ULiege; Blavier, Adelaïde ULiege

Conference (2017, June 01)

Cet exposé relate les difficultés du couple à l’annonce d’un abus sexuel d’un enfant. Ce vécu mérite d’être investigué car nous savons combien la souffrance des parents influence celle des enfants et peut ... [more ▼]

Cet exposé relate les difficultés du couple à l’annonce d’un abus sexuel d’un enfant. Ce vécu mérite d’être investigué car nous savons combien la souffrance des parents influence celle des enfants et peut alimenter voire maintenir leurs symptômes. Notre échantillon comprend 6 couples dont l’enfant a été victime. Nous avons réalisé un entretien semi-structuré récoltant les informations sur les circonstances de l’abus. De plus, nous avons administré 5 questionnaires évaluant une dimension spécifique du couple. Les résultats obtenus soulignent une détresse chez chaque couple. Cependant, celle-ci s’exprime différemment, aussi bien entre les couples qu’entre les partenaires conjugaux. Néanmoins, pour chacun d’eux, la dimension de la parentalité semble être une ressource permettant un investissement auprès de leur enfant par une focalisation ayant pour conséquence l’effacement du couple conjugal. Si certains couples manifestent néanmoins un rapprochement, celui-ci se fait autour de l’enfant et du problème. Cette capacité à faire équipe nous laisse penser que ces couples disposent de ressources pour faire face à l’abus. L’intérêt porté à la détresse conjugale et parentale semble primordial car si les parents tentent dans un premier temps de mettre en place des mécanismes assurant l’homéostasie et la sécurité, ceux-ci ne sont pas toujours adaptatifs à long terme (secret de famille, surprotection, étiolement du couple). Ainsi, il nous semble impératif de soutenir et contenir la conjugalité. D’autres études sont nécessaires pour approfondir les difficultés vécues par ces couples. [less ▲]

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See detailA novel approach towards manipulation of vortex matter in a superconductor with micromagnetic structures
Shaw, Gorky ULiege

Conference (2017, June 01)

Though Superconductor/Ferromagnet hybrids is a widely studied system, application of hard magnetic materials as sources of vortex pinning remains relatively unexplored. They offer a number of advantages ... [more ▼]

Though Superconductor/Ferromagnet hybrids is a widely studied system, application of hard magnetic materials as sources of vortex pinning remains relatively unexplored. They offer a number of advantages over softer magnetic materials, like greater stability and larger magnetic field amplitudes. Recently, a promising technique, thermomagnetic patterning (TMP), has been developed to prepare micromagnets, which serve as micro flux sources to produce magnetic fields spatially modulated at the micron scale. Permanent magnetic structures prepared using TMP present an interesting and so far unexplored option for controlled artificial pinning. We have investigated the vortex matter in superconductor/TMP micromagnet heterostructures (Nb-NdFeB) using quantitative Magneto-Optical Imaging (MOI). Comprehensive protocols have been developed for calibrating and converting Faraday rotation data acquired by MOI to magnetic field maps. These protocols reveal the comparatively weaker magnetic response of the superconductor from the background of larger fields associated with the magnetic layer in its vicinity. Further, TMP micromagnet structures have been imprinted in a permalloy (Py) layer following a protocol reported earlier to obtain flexible magnetic landscapes for flux guidance in a Nb layer below it. Both smooth flux penetration and vortex avalanches in Nb are observed to be strongly influenced by the micromagnetic patterns. Our study offers new insights into the peculiarities of the vortex state in these superconductor-micromagnet heterostructures. [less ▲]

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See detailState, Church, Censorship and Culture in Brussels in Mid-Sixteenth Century
Adam, Renaud ULiege; Delfosse, Annick ULiege

Conference (2017, June 01)

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See detailLa reconnaissance de la maladie mentale en psychopathologie légale
Englebert, Jérôme ULiege

Conference (2017, June 01)

De nombreux programmes thérapeutiques recommandent d’orienter la thérapie sur la reconnaissance du trouble ou de la maladie. Nous évoquerons cette problématique dans le cadre de la psychiatrie légale ... [more ▼]

De nombreux programmes thérapeutiques recommandent d’orienter la thérapie sur la reconnaissance du trouble ou de la maladie. Nous évoquerons cette problématique dans le cadre de la psychiatrie légale (particulièrement avec des patients présentant un diagnostic de schizophrénie et ayant commis des faits de délinquance sexuelle). Avoir pour objectif de réduire l’anosognosie pose la question des représentations du trouble et de la connaissance de ces phénomènes complexes. La distinction des perspectives en première et troisième personnes est un apport récent et décisif de la phénoménologie à la psychologie clinique et à la psychopathologie (Parnas, Sass & Zahavi, 2012). La perspective en troisième personne consiste en l’attribution, depuis une position externe, de signes cliniques repérés indépendamment du ressenti exprimé par le patient. L’exemple typique de ces signes est le délire et l’hallucination du schizophrène. Ces symptômes cristallisent précisément les difficultés qu’éprouve le sujet à se reconnaitre affecté du trouble. La perspective en première personne concentre, quant à elle, son attention sur l’expérience subjective exprimée par le patient. Si l’on reprend le cas de la schizophrénie, ce sont la « perte de l’évidence naturelle » des choses ou un « sentiment de diminution du soi » qui sont verbalisés. Ce pas de côté de la vision omnisciente du médical, assumant une remise en cause du pouvoir de domination qu’entraine la perspective en troisième personne, se révèle être un outil psychothérapeutique pertinent. Il désacralise le problème de l’anosognosie et ouvre la voie à une perspective intersubjective, à une « co-reconnaissance ». [less ▲]

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See detailDe l'errance individuelle à la reconnaissance collective: Récits de patients et de proches impliqués dans des associations de maladies rares en Belgique
Duysens, Fanny ULiege

Conference (2017, June 01)

Les maladies dites rares affectent moins d’une personne sur 2000 selon les chiffres de l'Union Européenne. Outre ce faible taux de prévalence, elles sont définies comme faisant généralement l'objet d'une ... [more ▼]

Les maladies dites rares affectent moins d’une personne sur 2000 selon les chiffres de l'Union Européenne. Outre ce faible taux de prévalence, elles sont définies comme faisant généralement l'objet d'une insuffisance de connaissance et de reconnaissance, qui conduit souvent à des situations d'errance diagnostique et thérapeutique pour les patients et leurs proches. Ainsi, ceux-ci sont nombreux à se regrouper dans des associations qui visent à guider quelque peu les personnes concernées dans leurs parcours et à améliorer leur qualité de vie. S'inscrivant dans le champ des sciences sociales, et plus particulièrement des Science & Technology Studies et de l'anthropologie de la santé et de la maladie, cette recherche doctorale (en cours) explore les activités d’associations de patients et de proches formées autour de maladies rares en Belgique. Elle se base sur une ethnographie multi-site qui implique notamment des entretiens biographiques avec des personnes engagées. Ce sont des récits de parcours et d'expériences, dans lesquels les personnes ont raconté les manières dont elles se sont trouvées concernées par certaines maladies, les raisons qui les ont conduit à fonder ou à rejoindre une association, ainsi que les enjeux de cet engagement tant sur les plans individuels que collectifs. L'étude des récits des patients et des proches engagés montre qu'ils constituent en eux-mêmes de véritables ressources mobilisées dans les activités des associations de maladies rares. De fait, celles-ci apparaissent comme des espaces de production et de mise en circulation de certains types de récits qui visent entre autres à caractériser la "rareté" d'une maladie et à construire une catégorie univoque de "maladie rare". Les associations travaillent à identifier des problématiques communes, puis élaborer des missions susceptibles de bénéficier à tous au-delà de la multiplicité des personnes, des situations, des conceptions et des expériences vécues. Dans une approche comparative des récits des parcours et des expériences individuelles de représentants de différentes associations, cette communication visait à étudier le fond et la forme de ces récits en vue de comprendre les logiques de leur mobilisation collective pour une catégorisation de la "maladie rare". Plus particulièrement, il s'agissait d'interroger l'articulation entre la singularité des récits et la certaine logique collective qu'ils reflètent. Comment les expériences sont-elles échangées au sein des associations ? Comment sont-elles alignées les unes par rapport aux autres pour en faire des ressources mobilisables collectivement ? Comment est ainsi construite la catégorie de "maladie rare" ? Quels sont les éléments qui font sens et qu’est-ce qui, à l’inverse, se perd dans ce passage de l’individuel au collectif ? Par ailleurs, quels sont les rapports entre les récits des patients et des proches engagés et les contextes sociaux, politiques et médicaux plus larges dans lesquels ils s'inscrivent ? [less ▲]

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See detailEnhancing the sweetener erythritol productivity in Yarrowia lipolytica using metabolic engineering
Carly, Frédéric; Vandermies, Marie ULiege; Nicaud, Jean-Marc et al

Conference (2017, June)

Erythritol (1,2,3,4-butanetetrol) is a four-carbon sugar alcohol used as sweeteners in food and beverage industry. It is most commonly generated from glucose via fermentation using osmophilic yeasts ... [more ▼]

Erythritol (1,2,3,4-butanetetrol) is a four-carbon sugar alcohol used as sweeteners in food and beverage industry. It is most commonly generated from glucose via fermentation using osmophilic yeasts. Yarrowia lipolytica is highly proficient at producing erythritol and can use raw glycerol instead of glucose as its main carbon source. Raw glycerol is a byproduct of the biodiesel industry, and it is a cheaper and more efficient carbon source than glucose when it comes to producing erythritol. To date, most studies seeking to improve erythritol production have used wild type strains or randomly generated mutants and have focused on optimizing the culture medium or culturing conditions. In this study, we demonstrated that metabolic engineering can be used to enhance the production of erythritol from glycerol. To this end, we constructed a set of eleven strains that overexpressed genes encoding key enzymes of either glycerol catabolism and erythritol synthesis pathway. For the best of our engineered strains, erythritol productivity in bioreactor was increased 78% relative to the wild type strain and maximum concentrations were obtained in 40% less time. [less ▲]

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See detailBusiness Models for Smart City – a means to achieve sustainability?
Bleus, Hélène ULiege; Crutzen, Nathalie ULiege

Conference (2017, June)

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See detailFATIGUE CRACK PROPAGATION IN HSS S690QL WELDED CONNECTIONS IN BRIDGES
Bouffioux, Chantal ULiege; Canales Cardenas, Cristian ULiege; Duchene, Laurent ULiege et al

Conference (2017, June)

The fatigue and crack study of HSS S690QL steel welded pieces is first experimentally analyzed by fatigue tests on small samples of Base Material (BM), Heat Affected Zone (HAZ) and Weld Metal (WM ... [more ▼]

The fatigue and crack study of HSS S690QL steel welded pieces is first experimentally analyzed by fatigue tests on small samples of Base Material (BM), Heat Affected Zone (HAZ) and Weld Metal (WM) separately for several stress ratios, stress levels, on smooth and notched samples. The Lemaître-Chaboche fatigue model combined with the stress gradient method and the three sets of parameters are found to accurately describe the behavior of each material. Another experimental campaign with larger pieces (closer to the scale of the bridge connections) called "small scale samples", with/without welded stiffeners, with several geometries and with/without post-treatment has shown each effect separately: the scale and machining effects, residual stresses due to the welding, geometrical and post-treatments effects. Numerical simulations of these experiments are used to improve and validate the material data, with a study in real context and size. Then, the characterized fatigue damage model is coupled with the element deletion method to model the propagation of cracks along the welded samples and the numerical predictions are compared with experimental results in order to validate the approach. [less ▲]

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See detailPulsations in white dwarf stars
Van Grootel, Valérie ULiege; Fontaine, Gilles; Brassard, Pierre et al

Conference (2017, June)

I will present a description of the six distinct families of pulsating white dwarfs that are currently known. Pulsations are present at various stages of the evolution (from hot, pre-white dwarfs to cool ... [more ▼]

I will present a description of the six distinct families of pulsating white dwarfs that are currently known. Pulsations are present at various stages of the evolution (from hot, pre-white dwarfs to cool white dwarfs), at various stellar masses, and for various atmospheric compositions. In all of them, a mechanism linked to opacity changes along the evolution drives the oscillations. The existence of these oscillations offers the opportunity to apply asteroseismology for constraining physics inside white dwarfs. The direct comparison between observed and theoretical pulsation frequencies yields the global parameters (e.g. mass and radius) and internal structure and composition (e.g. envelope layering, core composition) of the star. The deep understanding of the driving mechanism provides stringent constraints on the physical conditions at work where oscillations are excited. I will present the major achievements in the field of white dwarf asteroseismology, as well as the needed improvements for coming years in this field of research. [less ▲]

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See detailShallow water model with anisotropic porosity for flood modelling on Cartesian grids
Bruwier, Martin ULiege; Archambeau, Pierre ULiege; Erpicum, Sébastien ULiege et al

Conference (2017, June)

Detailed topographic data have become widely available for inundation mapping. While the use of such high-resolution data enables the computation of flow variables at a fine scale, the computation time ... [more ▼]

Detailed topographic data have become widely available for inundation mapping. While the use of such high-resolution data enables the computation of flow variables at a fine scale, the computation time remains too high for many practical applications. In contrast, models solving the shallow-water equations with porosity provide a useful tool to improve the computational efficiency, while preserving to some extent the detailed topographic information through porosity parameters. In this study, we present a new model solving the fully dynamic shallow water equations with anisotropic porosity based on Cartesian grids. Using a Cartesian grid leads to specific challenges, particularly as regards the definition of the conveyance porosities at the cell edges. Moreover, the presented model is further improved by a merging method so as to increase the computational efficiency without affecting the overall accuracy. The performance of the model has been evaluated based on a wide range of test cases, which confirm the validity of the model and the benefits of such a modelling framework. [less ▲]

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See detailIntermodal transport: does a wider definition improve its competitiveness?
Mostert, Martine ULiege; Limbourg, Sabine ULiege; Caris, An

Conference (2017, June)

With the opening of borders and always greater decentralization of production, freight transport increased a lot in the last decades. Road remains the most used mode in Europe (Eurostat, 2016). Even if it ... [more ▼]

With the opening of borders and always greater decentralization of production, freight transport increased a lot in the last decades. Road remains the most used mode in Europe (Eurostat, 2016). Even if it is appreciated for its responsiveness, flexibility, and quickness, road transport is however responsible for negative impacts on its environment like air pollution or climate change. Intermodal freight transport i.e. the transportation of goods using two or more modes of transport, in the same loading unit, without handling of the goods themselves (United Nations, 2001) is identified by the European Commission (2011) as an interesting solution for limiting the negative impacts of transport. In the classical conception of intermodal transport, pre- and post-haulage travels are supposed to be short, and to be performed by road transport, whereas the long-haul travel is done using rail or IWW. The combination of these modes allows reducing the negative externalities of the whole travel, i.e. the negative impacts that are generated by transport operators, but which are not directly supported by them. These externalities in particular consist in air pollution and climate change, provoked by the release of emissions which lead to air pollution and human health problems. The objective of this study is to determine the impact on intermodal attractiveness of allowing other combinations of modes than the classical road-rail/IWW-road combination, during an intermodal travel. The research is based on tools of the operations research domain and proposes the development of an allocation model for freight transport at the strategic level of decision. The goal is to determine the flow distribution of goods between direct transportation by road, rail or inland waterways, and any combination of these modes using intermodal transport. The novelty consists in taking into account three modes of transport in a mixed integer programming model, and to allow the transfer from any mode to any other at intermodal terminals where these modes coexist. [less ▲]

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See detailMindfulness in Cyber-Security: The Case of a Government Agency
Tapanainen, Tommi ULiege; Lisein, Olivier ULiege

Conference (2017, June)

Cyber-security requires not only technical preparations but also organizational practices that reduce the likelihood and severity of damage to the organization. Although user compliance to security ... [more ▼]

Cyber-security requires not only technical preparations but also organizational practices that reduce the likelihood and severity of damage to the organization. Although user compliance to security policies has been examined in prior literature, user behaviour is only one facet of an organization’s cyber-security; the actions of the IT staff, crisis team, and the management are just as critical. Consequently, organizational practices in cyber-security are not understood very well. To address this gap, this research applied the concept of mindfulness, which has recently received attention also in the IT field. We collected data from a revelatory case – that of a government agency that was targeted by a large-scale cyber-attack – and applied the concept of mindfulness in analyzing the data. Our analysis uncovered a number of mindful practices related to cyber-security. These practices can serve as a building block to theorize on the activities to be taken by IT workers in promoting cyber-security. Our paper also suggests avenues for further research in the emerging topic, for instance, through the concept of cyber-security capability. [less ▲]

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See detailGelfand duality for compact pospaces
De Rudder, Laurent ULiege

Conference (2017, June)

It is well known that the category of compact Hausdorff spaces is dually equivalent to the category of commutative C^\star-algebras. More generally, this duality can be seen as a part of a square of ... [more ▼]

It is well known that the category of compact Hausdorff spaces is dually equivalent to the category of commutative C^\star-algebras. More generally, this duality can be seen as a part of a square of dualities between compact Hausdorff spaces, C^\star-algebras, compact regular frames and de Vries algebras. Three of these dualities have been extended to dualities between compact pospaces, stably compact frames and proximity frames, the fourth part of the square being lacking. We propose the category of bounded Archimedean l-semi-algebra to complete what will be the outside square of dualities and to extend to category of C^\star-algebras. [less ▲]

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See detailVariable selection in proportional hazards cure model with time-varying covariates, application to bank failures
Beretta, Alessandro ULiege; Heuchenne, Cédric ULiege

Conference (2017, June)

In the last three decades, as a consequence of failures and corporate actions, the number of commercial banks in the United States has shrunk by two thirds. Empirical evidence in the analysis of bank ... [more ▼]

In the last three decades, as a consequence of failures and corporate actions, the number of commercial banks in the United States has shrunk by two thirds. Empirical evidence in the analysis of bank failures suggests the existence of banks which are not susceptible to default. For this reason, we use a semi-parametric proportional hazards cure model with time-varying covariates to study their effects either on the probability that a bank is susceptible to default and on the survival time of failed institutions. We propose a penalized maximum likelihood method for the selection of the most significant variables, using a Smoothly Clipped Absolute Deviation (SCAD) penalty. A simulation study shows that this procedure performs reasonably well. We apply this methodology to a quite large sample of United States commercial banks insured by the Federal Deposit Insurance Corporation (FDIC) and with more than 50 million dollars of total assets during the last quarter of 2002. More in detail, we use bank-specific covariates observed on a quarterly basis until the end of 2015, that we use as proxies for capital adequacy, asset quality, earnings, management efficiency, liquidity, cost structure and size. [less ▲]

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See detailLong-term monitoring of European eels in the Belgian Meuse River basin. From the historical drastic decline to recent outcomes of restocking practices.
Nzau Matondo, Billy ULiege; Dierckx, Arnaud ULiege; Benitez, Jean-Philippe ULiege et al

Conference (2017, June)

Long-term monitoring of yellow- and glass eel stages were performed in upland areas (>300km from sea) in order (i) to quantify the decline of wild yellow eels entering in the Belgian Meuse from the ... [more ▼]

Long-term monitoring of yellow- and glass eel stages were performed in upland areas (>300km from sea) in order (i) to quantify the decline of wild yellow eels entering in the Belgian Meuse from the Netherlands; (ii) to follow their upstream individual colonization; and (iii) to analyze the adaptation of young eels stocked as glass eels imported from UK. By monitoring a fish pass from 1992 to 2016, we quantified that the number of ascending eels has declined from n=5613 in 1992 to n=21 in 2016 (3.99%/year) and the mean length of eels has increased (4.1mm/year). During 6-years, upstream individual colonization of eels (2010-2015, n=1371) was followed using fixed RFIDtracking system. Few eels continued to migrate 4 years after tagging (<0.3%) and at >20km upstream (3.7%); and velocity of eels varied between individuals (0.012- 3.1km/day). In a 4-year (2013-2016) monitoring study of restocked glass eels using electrofishing and mobile RFID-tracking campaigns, we observed that eels grew rapidly in upland small brooks and recruitment was better in rivers with high carrying capacity (>15.8%, 2years post-stocking). Restocked eels dispersed in up- and downstream directions with behaviors including sedentary, nomadic and intermediate lifestyles. This suggests stocking as potential management measure to enhance local eel stocks. [less ▲]

Detailed reference viewed: 31 (8 ULiège)
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See detailThe Delivery of Bad News to Customers in Service Encounters: An Employee Perspective
Delcourt, Cécile ULiege; Gremler, Dwayne; Greer, Dominique

Conference (2017, June)

During service encounters, customer contact employees often need to deliver bad news: unexpected information contrary to the customer’s wellbeing. For example, technicians regularly tell customers that ... [more ▼]

During service encounters, customer contact employees often need to deliver bad news: unexpected information contrary to the customer’s wellbeing. For example, technicians regularly tell customers that none of the data on their computer hard drive can be retrieved, veterinarians often inform owners that a beloved pet has cancer and cannot be cured, and airline staff regularly tell travelers that their flights have been cancelled due to bad weather. For some customer-contact employees, delivering bad news is an unavoidable, delicate, and emotionally-charged task that occurs regularly. Disclosing bad news can be highly stressful and perhaps detrimental for (1) customers, (2) customer- contact employees, and (3) service firms in general. Accordingly, it is crucial for service organizations to better understand bad news encounters (i.e., situations during which customer contact employees must deliver negative information) to better equip their managers and employees to deliver such news to customers. The topic of how to best deliver bad news has been broached in various disciplines, including the medical literature (e.g., Baile et al. 2000, 2002; Rosenbaum et al. 2004), the management literature (e.g., Bies 2013; Kothari, Shu, and Wysocki 2009), and the sociology literature (e.g., Clark and LaBeff 1986). These literatures have (1) examined the attitudes and emotions of the discloser of extreme bad news in very specific contexts, (2) identified the tactics used by disclosers, and (3) developed protocols for delivering extremely negative information. Surprisingly, studies of bad news delivered by contact employees are scarce in service research. Service failure and service recovery have received much attention, but this literature has two major gaps when it comes to understanding the delivery of negative information. First, service recovery research generally skips over the initial part of the process where employees first communicate bad news to customers, and instead focuses primarily on the process involved to resolve the situation. Second, there are many situations in which employees must deliver negative information to customers where it is clear that a service failure has not occurred (e.g., informing a customer that his 30-year old dishwasher is beyond repair). We use the critical incident technique (CIT) (Flanagan 1954; Gremler 2004) to analyze 200 incidents where service employees from a wide range of service sectors had to deliver bad news to a customer. [less ▲]

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See detailAutonomous work, labor market intermediaries and new forms of social dialogue
Koene, Bas; Pichault, François ULiege

Conference (2017, June)

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See detailCo-creating service recovery after service failure: The role of brand equity
Hazee, Simon ULiege; Van Vaerenbergh, Yves; Armirotto, Vincent

Conference (2017, June)

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See detailNew insights into the microbiome of apple fruit surface “cv Pinova” through metagenomics
Dario, Angeli; Massart, Sébastien ULiege; Sare, Abdoul Razack ULiege et al

Conference (2017, June)

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See detailThe development of sustainable mobility strategy in Belgian cities
Crutzen, Nathalie ULiege; Qian, Wei; Bounazef, Djida ULiege

Conference (2017, June)

Nowadays, city local governments focus their strategic vision on the development of the urban sustainability. For this, they develop drivers, strategies, structures on green local improvements. To be ... [more ▼]

Nowadays, city local governments focus their strategic vision on the development of the urban sustainability. For this, they develop drivers, strategies, structures on green local improvements. To be sustainable, cities reinforce actions and plans on resource management, mobility, climate, building and public spaces. In order to be sustainable and smart, challenges are set to ensure successful implementation of sustainable mobility strategies through the development of appropriate policies, actions, decisions and controls. The development of sustainable mobility strategy requires the involvement of strategic actors, infrastructures, funding and socio-demographic parameters. To ensure this, sustainable mobility strategy has to be strengthen by an efficient management control system and a real measurement of institutional factors’ risk. The development of mobility controls ensures homogeneity between behaviours, decisions, objectives and strategies for mobility issues. In order to make the link between control, strategy and sustainability, new researches propose new frameworks and systems. These frameworks reinforce the strategic contribution of values, rules, monitoring and enhancing awareness and interactions. Based on that, the management control framework of Malmi and Brown is more and more associated with the implementation of sustainable strategies. This paper explores the development of sustainable mobility strategies in two Belgian cities (Namur and Leuven). To analyse how cilty local governments implement, control and develop mobility strategies and plans, this paper refers to Malmi and Brown’s model. The research proposes two hypotheses that set the importance of the integration of an adequate sustainable mobility control system and the institutional factors on the design and the use of mobility strategy control. This paper proposes a new conceptual model to support the development of sustainable mobility strategy. For this, the choice of two Belgian cities is made according to similarities (population size, explicit will to develop sustainable mobility strategy, focus on sustainable transport, initiation period of mobility issues’ implementation, number of person in charge of mobility, level of willingness to develop mobility system, focus on car free and strategic mobility challenges) and differences (region, language, regulative factors, normative factors and cognitive factors). To test our conceptual framework, an explorative qualitative case study is done in these two Belgian city local governments. The data collection requires a fieldwork of 12 weeks, 54 internal and external documents, and 20 semi-structured interviews (mobility managers, politicians, sustainability managers, policemen and administrative workers). Results shows differences between the implementation and development of Namur and Leuven. Leuven has an average quality of sustainable mobility control system. Leuven requires developing new adapted indicators to face new city challenges and more effective collaborations between involved departments and actors. The case of Namur shows that its sustainable mobility control system is weak because of the non-adapted indicators to strategy and the weakness of the formal structure of mobility strategy. Results identify different institutional factors that have a significant impact on the development of sustainable mobility strategy; the most relevant are formal regulations, political power, local cultures, support of direct and indirect actors and the sensitiveness on sustainable culture. The proposed conceptual model also highlights if the impact of mobility strategy controls and institutional influences have a weak, medium or strong impact on the development of mobility strategy. Results validate our proposed conceptual model. However, this model has to be tested on other sustainability issues (energy, green building, green housing, green and neutral climate), cities and regions. [less ▲]

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See detailUnderstanding the Economic Determinants of the Severity of Operational Losses: A regularized Generalized Pareto Regression Approach,
Hambuckers, julien ULiege

Conference (2017, June)

We investigate a novel database of 10,217 extreme operational losses from the Italian bank UniCredit, covering a period of 10 years and 7 di erent event types. Our goal is to shed light on the dependence ... [more ▼]

We investigate a novel database of 10,217 extreme operational losses from the Italian bank UniCredit, covering a period of 10 years and 7 di erent event types. Our goal is to shed light on the dependence between the severity distribution of these losses and a set of macroeconomic, financial and fi rm-speci c factors. To do so, we use Generalized Pareto regression techniques, where both the scale and shape parameters are assumed to be functions of these explanatory variables. In this complex distributional regression framework, we perform the selection of the relevant covariates with a state-of-the-art penalized-likelihood estimation procedure relying on L1-norm penalty terms of the coefficients. A simulation study indicates that this approach efficiently selects covariates of interest but also tackles spurious regression issues encountered when dealing with integrated time series of covariates. The results of our empirical analysis have important implications in terms of risk management and regulatory policy. In particular, we found that high unemployment rate and low economic growth are associated with smaller probabilities of extreme severities, whereas high volatility on the financial market is associated with more extreme losses. Looking at firm speci c factors, a commercial strategy driven by non-interest incomes is associated with an increased likelihood of extreme severities. Last, we illustrate the impact of several economic scenarios on the requested capital of the total operational loss, and find important discrepancies across loss types and scenarios. [less ▲]

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See detailCoulombic driven multi-conformational aspects of oligorotaxane switches studied by ion mobility mass spectrometry and molecular dynamics
Hanozin, Emeline ULiege; Mignolet, Benoît ULiege; Morsa, Denis ULiege et al

Conference (2017, June)

Introduction Artificial Molecular Machines (AMMs), such as Mechanically Interlocked Molecules (MIMs) and foldamers, have recently raised tremendous interest due to their unique properties. Under the ... [more ▼]

Introduction Artificial Molecular Machines (AMMs), such as Mechanically Interlocked Molecules (MIMs) and foldamers, have recently raised tremendous interest due to their unique properties. Under the influence of an appropriate stimuli (pH, redox potential, light…), such molecules are able to reversibly switch between distinct conformational states. Scientists may capitalize on such exclusive properties to get a better understanding of the biomacromolecular level or to design innovative “smart” materials. At the interface between foldamers and MIMs, oligorotaxanes exhibit a spring-like folded secondary structure with remarkable mechanical and physicochemical properties. In the present study, we use ion mobility coupled with mass spectrometry (IM-MS) to probe the conformational states of differentially charged oligorotaxanes in the gas phase. Method Oligorotaxanes are donor-acceptor polymers composed of a π electron-donating dumbbell over which a discrete number of π electron-accepting tetracationic cyclophanes are threaded. The numerous intra-molecular interactions provide them a highly-stabilized rigid rod-like structure in solution. We use IM-MS as implemented in the Synapt G2 HDMS (Waters, Manchester, UK) to investigate the structure of the ionized oligorotaxanes. Our purposes are to probe (i) the different populations of stable conformers generated according to the charge state z and (ii) the reversibility of an electron-driven or thermal-driven conformational change in the gas phase implemented via an electron transfer or collisional activation process prior to the mobility separation. Our experimental observations are supported by electronic structure optimizations at the PM6 and DFT levels coupled with Born-Oppenheimer Molecular Dynamics simulations. Preliminary data Our results highlight a progressive elongation of the oligorotaxane structure with increasing charge numbers until it reaches a maximum extension state. Matching the experimental data with theoretical simulations, we find that the oligorotaxanes adopt an entropically-favored globular shape at low z. As z increases, coulombic repulsions occurring between the cyclophanes gradually outweigh the stabilizing π-stacking interactions and force the structure to elongate. This process occurs in a multistep fashion, each corresponding to a distinct group of helical-shaped conformers, before it eventually results in a fully stretched structure. On the other hand, our results also highlight that a charge reduction driven by a non-dissociative electron transfer process leads to a refolding of the structure so that it adopts a size similar to its electrospray-generated counterpart when the appropriate number of electrons is added. This observation may be imparted to the gradual decrease of the Coulomb repulsions between the cyclophanes mediated through increasing numbers of transferred electrons. These results suggests that the transition from one conformer to another is reversible so that the electrostatic balance between the cyclophanes may be used to further tune the structural state adopted by this artificial molecular switch. The second stimulus relied on collisional activation whose inelastic component provides a way to build up energy into the accessible vibrational degrees of freedom. The conformational landscapes of such-activated oligorotaxanes ions were found unchanged in term of collision cross section position but the repartition of population was altered with a promotion of the most elongated conformer, provided the absence of selective fragmentation. Altogether, these results highlight the feasibility of handling the elongation state of oligorotaxanes in the gas phase through appropriate inputs and underline its conformational reversibility properties. Novel aspect Stimuli-induced reversible conformational rearrangements of innovative AMMs studied by IM-MS and molecular dynamics in the gas phase. [less ▲]

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See detailEuropean silver eel (Anguilla anguilla L.) migration behaviour in a highly regulated shipping canal
Verhelst, Pieterjan; Baeyens, Raf; Buysse, David et al

Conference (2017, June)

Over the last 40 years, Anguilla species in the northern hemisphere have shown a strong decline in recruitment. Due to a 98% recruitment decline, the European eel is now classified as critically ... [more ▼]

Over the last 40 years, Anguilla species in the northern hemisphere have shown a strong decline in recruitment. Due to a 98% recruitment decline, the European eel is now classified as critically endangered according to the IUCN Red List. To aid conservation and recovery of European eel populations, the European Union recently adopted a Council Regulation which imposes a management system that ensures 40% escapement of the spawning stock biomass, defined as the best estimate of the theoretical escapement rate if the stock were completely free of anthropogenic influences. Various causes likely contribute to the eel decline (e.g. pollution, human-introduced parasites, changes in ocean climate, habitat deterioration…), but habitat fragmentation by migration barriers that prevent the movement of silver eels between freshwater and the sea is probably one of the most important bottlenecks. During the last decades, a substantial number of canals has been developed, creating new habitat for eels. However, eel migration and potential obstacles in these systems are still underexplored. In this study, we tracked 131 European eels (Anguilla anguilla L.) from October 2014 till March 2017 in the Belgian Albert Canal with acoustic telemetry. The 130-km long canal is on average 86 m wide, 5 m deep and functions as a shipping route between the rivers Schelde and Meuse. The canal has a highly regulated water flow and six shipping locks to overcome the 56-m fall, which may have a negative impact on silver eel escapement. Indeed, we found significant delays (i.e. periods with a significantly prolonged residence time) and a ca 50% lower swimming speed near shipping locks compared to riverine conditions. Depending on nothing but their accumulated fat for migration to their spawning grounds, delays can seriously impact eels by wasting precious energy resources needed for a successful trans-Atlantic migration. [less ▲]

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See detailThe question of the methane increase though the retrieval of its isotopologues from FTIR ground-based observations
Bader, Whitney ULiege; Strong, Kimberley; Walker, Kaley et al

Conference (2017, June)

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See detailOn the transition between symmetric ans asymmetric flow in rectangular shallow reservoirs - a case of maximum energy dissipation?
Westhoff, M.C.; Erpicum, Sébastien ULiege; Archambeau, Pierre ULiege et al

Conference (2017, June)

Shallow reservoirs are often used in hydraulic engineering as sediment traps or storage basins. For short rectangular reservoirs, the main jet flows straight from the inlet to the outlet with on both sides ... [more ▼]

Shallow reservoirs are often used in hydraulic engineering as sediment traps or storage basins. For short rectangular reservoirs, the main jet flows straight from the inlet to the outlet with on both sides symmetric recirculation zones. In longer reservoirs, however, the main jet reattaches to the side of the reservoir leading to a small and a large recirculation zone. Previous studies have found an empirical geometric relation describing the switch between these two flow pattems. In this study, we demonstrate with a simple analytical model, that this switch in flow pattem coincides with a maximization of energy dissipation in the shear layer between the main jet and the recirculation zones. We show that for short reservoir lengths, energy dissipation is higher in the case of a symmetric fiow pattern, while for longer reservoir the energy dissipation is higher for asymmetric flow pattems. The simulated switch between the two flow patterns appears to be very close to the empirical relation. The strength of this approach lies in the fact that no detailed knowledge of small scale processes is needed, which may prove useful at an early stage of reservoir design. [less ▲]

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See detailEffect of grinding on bone detection by light microscopy: Study results
Lecrenier, Marie-Caroline ULiege; Veys, Pascal; Planchon, Viviane et al

Conference (2017, June)

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See detailDraw me a sheep: a pedagogical tool to discover the complexity of rural planning
Schmitz, Serge ULiege

Conference (2017, June)

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See detailNet neutrality: Paid prioritization vs Zero-rating
Gautier, Axel ULiege

Conference (2017, June)

Detailed reference viewed: 42 (1 ULiège)
See detailSuperconducting weak links created by electromigration
Silhanek, Alejandro ULiege

Conference (2017, June)

In this presentation, we explore in-situ controlled electromigration to fabricate superconducting weak links. We show evidence that in Al a transition from thermally assisted phase slips (TAPS) to quantum ... [more ▼]

In this presentation, we explore in-situ controlled electromigration to fabricate superconducting weak links. We show evidence that in Al a transition from thermally assisted phase slips (TAPS) to quantum phase slips may takes place when the effective cross section becomes smaller than ~150 nm2. In the regime dominated by quantum phase slips the nanowire loses completely its capacity to carry current without dissipation, even at the lowest possible temperature. We also discuss the origin of negative magnetoresistance at low magnetic fields in the bow-tie shaped constrictions. Strikingly, the detrimental effect caused by the repeated electromigration can be healed by simply inverting the current direction. These findings reveal perspectives of the proposed fabrication method for exploring various fascinating superconducting phenomena in atomic size constrictions. [less ▲]

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See detailQuantification of roots by the use of NIR hyperspectral imaging and chemometrics
Eylenbosch, Damien ULiege; Baeten, Vincent; Bodson, Bernard ULiege et al

Conference (2017, June)

Estimation of root system development is often based on the soil coring method which allows repeated measurements during the growing season in the field as well as in different soil horizons. However ... [more ▼]

Estimation of root system development is often based on the soil coring method which allows repeated measurements during the growing season in the field as well as in different soil horizons. However, this method is limited due to the time needed to extract roots from soil cores and to manually sort them from crop residues before quantification. To avoid this tedious sorting step and remove operator subjectivity, a procedure based on NIR Hyperspectral Imaging (NIR-HSI) has been developed. [less ▲]

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See detailMarket Efficiency And Hedge Fund Trading Strategies
Lambert, Marie ULiege

Conference (2017, May 31)

Detailed reference viewed: 20 (2 ULiège)
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See detailNarration et argumentation. Retour sur l’analyse du discours en sciences sociales
Lttr13; Badir, Sémir ULiege; Polis, Stéphane ULiege et al

Conference (2017, May 31)

En 1979 a paru un ouvrage dirigé par A.J. Greimas et É. Landowski, intitulé « Introduction à l’analyse du discours en sciences sociales ». L’ouvrage n’a pas connu le succès de son contemporain, publié la ... [more ▼]

En 1979 a paru un ouvrage dirigé par A.J. Greimas et É. Landowski, intitulé « Introduction à l’analyse du discours en sciences sociales ». L’ouvrage n’a pas connu le succès de son contemporain, publié la même année, le célèbre « Sémiotique. Dictionnaire de la théorie du langage ». On souhaite dans cette communication proposer un bilan critique, en comparant les postulats de la méthode sémiotique avec ceux d’autres modèles d’analyse, et soulever quelques questions théoriques relatives aux types de discours. L’ouvrage de Greimas et Landowski s’inscrit dans le projet général d’extension du modèle narratif d’analyse textuelle. Selon ce projet, le modèle initialement développé en vue de l’analyse des contes et des mythes peut être appliqué à différents types de discours en envisageant dans leur variété, suivant « un degré croissant de complexité et d’abstraction », les « formes de production sociale du sens » (Greimas & Landowski, p. 5, passim). Le modèle étend ainsi la notion de récit à tout type de discours, à toute forme textuelle, ainsi que le confirme le « Dictionnaire ». Cette extension généralisée prend appui sur une typologie des discours qu’illustrent des analyses particulières publiés dans les années 1980 (Bastide 1981 ; Bastide & Fabbri éds 1985 ; Landowski 1986). Déjà en 1966, dans « Sémantique structurale », Greimas prévoyait une typologie de quatre types de « micro-univers sémantiques » (p. 128) où s’opposent, en fonction de deux critères, les univers dits « idéologiques » (dont ressortit le conte populaire) et les univers « scientifiques ». On peut considérer que la proposition de recherche qu’ont dirigée Greimas et Landowski est ainsi située au point le plus éloigné d’élaboration et d’application initiale du modèle suivi et qu’elle constitue par conséquent une expérience-limite pour le modèle narratif. Ce faisant, l’approche sémiotique prenait le risque d’être confrontée à d’autres modèles d’analyse, tels qu’ils se sont élaborés dans des cadres théoriques issus de la rhétorique (réactualisée dans les années 1950 par Chaïm Perelman et son école), de la pragmatique (cf. Parret 1983 & 1987), de la sociologie de la connaissance (à partir de l’ouvrage fondateur de Berger & Luckmann 1966) ou comme ils relèvent d’autres courants théoriques en sciences du langage (notamment, en France, l’analyse du discours d’inspiration althussérienne). Pour l’analyse des discours en sciences sociales, ces modèles offrent deux avantages sur celui de la sémiotique : d’une part, il semble que les postulats théoriques sur lesquels ils sont construits s’accordent plus directement au type que ces discours constituent ; d’autre part, ils peuvent désormais compter sur une solide tradition d’études permettant de pérenniser les résultats. La congruence apparente entre modèles d’analyse et types de discours, malgré l’extension d’applicabilité à laquelle ces modèles peuvent prétendre, soulève des questions relatives à la légitimité d’une typologie des discours. Celle-ci peut-elle se mettre au-dessus des postulats théoriques qui forgent les appariements entre modèle d’analyse et type de discours ? Si ce n’est le cas, quels enjeux la question typologique permet-elle de soulever ? Outre celle de Greimas évoquée plus haut, les tentatives qui ont été proposées à ce sujet (notamment van Dijk 1972 & 1975 ; Adam 1999 & 2011 ; Bronckart 1997 ; Maingueneau 2007), nous permettront d’en donner au moins une idée. [less ▲]

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See detailDo nonbelieved memories typically refer to childhood memories?
Vanootighem, Valentine ULiege; Brédart, Serge ULiege

Conference (2017, May 31)

Detailed reference viewed: 23 (3 ULiège)
See detailLe "Good Lives Model", un modèle novateur d'intervention au service des besoins de l'usager: Expérience d'adaptation au sein de l'hôpital psychiatrique sécurisé "Les Marronniers" à Tournai
Henrard, Noémie ULiege; Devillers, Bérengère ULiege; Oswald, Pierre et al

Conference (2017, May 31)

L’Hôpital Psychiatrique Sécurisé (H.P.S.) « Les Marronniers » de Tournai fut la première équipe francophone, en collaboration avec le Groupe Antigone, à avoir adapté le Good Lives Model (GLM) à une ... [more ▼]

L’Hôpital Psychiatrique Sécurisé (H.P.S.) « Les Marronniers » de Tournai fut la première équipe francophone, en collaboration avec le Groupe Antigone, à avoir adapté le Good Lives Model (GLM) à une population psychiatrique (GLM – FM). Le cadre théorique et méthodologique du G.L.M – FM offre la possibilité de dépasser le paradigme du risque/rechute en proposant des principes et outils qui guident l’intervention tout en tenant compte du rôle des symptômes psychiatriques/infraction et des besoins humains fondamentaux de l’usager. Le G.L.M – FM implique d’élaborer avec l’usager un « Good Live Plan », plan de vie visant à satisfaire les besoins humains fondamentaux et à accéder à une meilleure qualité de vie. Le G.L.M- FM intègre à la fois les risques et les perspectives de réadaptation, et ce, dans une approche globale, intégrée et cohérente. Objectifs : - Présenter les fondements théoriques et les principes cliniques de base qui guident le Good Lives Model - Forensic Mental Health ; - Présenter différents outils cliniques (général et spécifique) permettant l’opérationnalisation du GLM-FM ; - Développer l’expérimentation et l’adaptation du G.L.M. réalisé au sein de l’H.P.S. de Tournai au travers des projets UET et Epicéas. Méthodes d’apprentissage : - Expérimentation par les participants d’un des champs de l’outil de l’Inventaire des Souhaits et Préoccupations Personnels (ISPP) ; - Articulation des principes théoriques et cliniques ; [less ▲]

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See detailÉvaluation des impacts des ouvrages transversaux sur le transport sédimentaire et l’hydromorphologie
Peeters, Alexandre ULiege; Petit, François ULiege; Houbrechts, Geoffrey ULiege

Conference (2017, May 31)

Le transport naturel des sédiments de la charge de fond est aujourd'hui clairement identifié comme un contributeur essentiel pour atteindre le bon état écologique des cours d’eau (Directive 2000/60/CE ... [more ▼]

Le transport naturel des sédiments de la charge de fond est aujourd'hui clairement identifié comme un contributeur essentiel pour atteindre le bon état écologique des cours d’eau (Directive 2000/60/CE). Lorsque le transport sédimentaire est entravé par des obstacles, l’équilibre hydromorphologique et écologique de la rivière est alors perturbé. Ces obstacles à la continuité écologique sont nombreux dans le bassin versant du Bocq (233 km², affluent de la Meuse en Wallonie) : on en dénombre 76 sur les 135 km de linéaire de cours d'eau, ce qui représente 1 obstacle tous les 1,8 km en moyenne. Il s'agit principalement d'ouvrages transversaux liés à des usages anciens du cours d’eau (moulin, forge, abissage, pompe à eau, etc.). Dans le cadre du projet UE LIFE+ Walphy, des travaux de réhabilitation de la continuité écologique ont été réalisés entre 2009 et 2013 sur 22 ouvrages transversaux du bassin du Bocq. Avant la réalisation des travaux, plusieurs ouvrages ont fait l’objet d’un diagnostic hydromorphologique et sédimentaire, basé sur l'identification des zones impactées (remous liquide et solide) d'une part, et l'évaluation de l'effet de piégeage de l'ouvrage d'autre part. Ce dernier point repose sur la caractérisation de l'ouvrage et du remplissage de sa retenue, ainsi que sur des mesures granulométriques et des marquages de la charge de fond (transpondeurs passifs). Ainsi, nous avons mis en évidence différents cas de piégeage de la charge de fond : absent, partiel ou total. Parmi les travaux de réhabilitation de la continuité écologique, ce sont les projets de suppression d'obstacle qui sont les plus efficaces, comme l'illustre le cas du déversoir de Spontin, pour lequel nous avons quantifié les impacts de son arasement des points de vue hydromorphologique et sédimentaire. Enfin, l’aménagement d'une rampe rugueuse sur un site fortement artificialisé (lit bétonné) à contrainte importante (protection de captages d'eau potable) constitue un cas particulier de réhabilitation de la continuité écologique, pour lequel l'analyse approfondie du transport sédimentaire a fourni les éléments nécessaires au bon dimensionnement des matériaux à utiliser. [less ▲]

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See detailAutobiographical memory: from the past to the future
D'Argembeau, Arnaud ULiege

Conference (2017, May 31)

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See detailNON-PATHOLOGICAL AGING OF THE EXECUTIVE FUNCTIONS: INFLUENCE OF THE VAL108/158MET NUCLEOTIDE POLYMORPHISM OF THE COMT GENE
Gilsoul, Jessica ULiege; Manard, Marine ULiege; Collette, Fabienne ULiege

Conference (2017, May 31)

Introduction. According to the Dual-State Theory of prefrontal cortex dopamine, Val/Val polymorphism of the COMT gene would favor better flexibility abilities, whereas Met/Met carriers would favor better ... [more ▼]

Introduction. According to the Dual-State Theory of prefrontal cortex dopamine, Val/Val polymorphism of the COMT gene would favor better flexibility abilities, whereas Met/Met carriers would favor better stability abilities. These genotypic effects should be magnified in older people, as a decrease in cognitive resources increases the influence of individual genetic differences on cognitive performance. Therefore, the aim of the study is to investigate the influence of the COMT Val108/158Met nucleotide polymorphism on executive functions in normal aging. Method. We assessed the executive processes of inhibition, shifting, and updating thanks to many different tasks in groups of young (n = 55) and aged participants (n = 45) carrying one of the three polymorphisms of the COMT gene (Val/Val, Val/Met, Met/Met). T-tests between our two groups (Young versus Aged) but also a 6 (Group: Young-Met/Met, Young-Val/Met, Young-Val/Val, Old-Met/Met, Old-Val/Met, and Old-Val/Val) X 3 (Executive functioning: Inhibition, Shifting, and Updating) repeated measure ANOVA with Executive functioning as within-subject factor (p < .05) were carried out. Results. Young and old participants significantly differed on the three executive functions. The comparison of genotypic groups showed no significant differences in young or older participants respectively. Interestingly, the Old-Val/Val group showed a lower performance than the young one on inhibition tasks. Discussion. As expected, we found an age effect on all the executive functions. The significant difference between the Young-Val/Val and the Old-Val/Val groups on inhibition suggests an age-related decrease in abilities requiring a stability component in individuals possessing a less favoring genotype for this component. [less ▲]

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See detailStrategic Beta and Style Investing: Implication of a (In)dependent Sorting
Fays, Boris ULiege; Lambert, Marie ULiege; Papageorgiou, Nicolas

Conference (2017, May 31)

We examine the performance of Strategic Beta on investment style portfolios instead of individual stocks. This method simplifies the allocation and reduces the errors in the covariance matrix of returns ... [more ▼]

We examine the performance of Strategic Beta on investment style portfolios instead of individual stocks. This method simplifies the allocation and reduces the errors in the covariance matrix of returns. We group stocks in categories on size, value and momentum characteristics according to either a traditional independent sort as in Fama and French (1993) or a dependent sort (Lambert and Hübner 2013). Because a dependent sort controls for correlated variables and better stratifies the stock universe in investment style portfolios, Strategic Beta on dependent portfolios delivers significant higher Sharpe ratios. We explain this outperformance with a decomposition of the diversification return from Booth and Fama (1992). [less ▲]

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See detailLogical tools for descriptive psychology. Set theory and foundational mereology
Leclercq, Bruno ULiege

Conference (2017, May 30)

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See detailObservation and simulation of ethane at 22 FTIR sites
Mahieu, Emmanuel ULiege; Franco, Bruno ULiege; Pozzer, Andrea et al

Conference (2017, May 30)

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See detailPhysiopathologie des tendinopathies
Kaux, Jean-François ULiege

Conference (2017, May 28)

Le tendon, tissu conjonctif fibreux, mécaniquement responsable de la transmission de la force des muscles vers les os, constitue une entitédynamique qui, en fonction des contraintes, se restructure en ... [more ▼]

Le tendon, tissu conjonctif fibreux, mécaniquement responsable de la transmission de la force des muscles vers les os, constitue une entitédynamique qui, en fonction des contraintes, se restructure en permanence et, ce, grâce à diverses modifications métaboliques et mécaniques. Cetterevue décrit l’histologie, la vascularisation et l’innervation du tendon sain. De plus, la biomécanique et les réponses physiologiques tendineuses,ainsi que la physiopathologie de la tendinopathie y sont abordées. [less ▲]

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See detailActualités des traitements conservateurs des tendinopathies
Kaux, Jean-François ULiege

Conference (2017, May 28)

Les connaissances et la prise en charge des tendinopathies ont beaucoup évolué depuis ces dernières années. En effet, se substituant désormais à l’ancienne appellation « tendinite », les tendinopathies ... [more ▼]

Les connaissances et la prise en charge des tendinopathies ont beaucoup évolué depuis ces dernières années. En effet, se substituant désormais à l’ancienne appellation « tendinite », les tendinopathies sont majoritairement décrites selon le modèle de continuum établi par Cook et Purdam. La compréhension de la physiopathologie de ces lésions a permis l’émergence de nombreux traitements dans le but d’obtenir une récupération optimale et une limitation des récidives. L’objectif de cet article est de faire une revue de l’actualité thérapeutique des tendinopathies. [less ▲]

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See detailLa Vierge dans les Pays-Bas espagnols au XVIIe siècle
Delfosse, Annick ULiege

Conference (2017, May 27)

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See detailL’extrême droite en Europe
Jamin, Jérôme ULiege

Conference (2017, May 26)

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See detailReactive collisions of electrons with CO+ and H2+ in cometary coma
Moulane, Youssef ULiege; Schneider, Ioan; Jehin, Emmanuel ULiege et al

Conference (2017, May 26)

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See detailWHERE DID ARCTIC-ALPINE MOSSES SURVIVE IN A FROZEN EUROPE? Insights from a multispecies coalescent analysis
Ledent, Alice ULiege

Conference (2017, May 25)

Arctic-Alpine species in Europe exhibit a strikingly disjunct distribution between Fennoscandia and the high mountain ranges of the South. During the cold stages of the Pleistocene, these areas were ... [more ▼]

Arctic-Alpine species in Europe exhibit a strikingly disjunct distribution between Fennoscandia and the high mountain ranges of the South. During the cold stages of the Pleistocene, these areas were covered almost entirely with a continuous ice sheet. Three hypotheses were formulated to explain the survival of organisms in Arctic-Alpine ranges during the ice-ages: (i) the ‘nunatak’ hypothesis, which suggests in-situ survival in micro-refugia within the ice sheet; (ii) the ‘tabula rasa’ hypothesis, which proposes the total eradication of populations within the ice sheet and subsequent recolonization from refugia outside the main glaciated area; and (iii) the ‘out-of-Europe’ hypothesis, according to which all European populations went extinct so that Europe was completely back-colonized from allochtonous populations, and in particular, North American ones. These hypotheses were tested here using the Arctic-Alpine bryophyte flora as a model. We used species distribution models to generate prior information on extant and Last Glacial Maximum effective population sizes. We then confronted these predictions to observed genetic data derived from DNA sequence variation at 3-4 unlinked loci for a representative population sampling of 3 species (Amphidium lapponicum, Timmia austriaca and Timmia bavarica) within their Holarctic range. More precisely, we employed Approximate Bayesian Computation to compare the observed patterns of genetic structure and diversity with those expected under the competing scenarios of ‘tabula rasa’, ‘nunatak’ and ‘out-of-Europe’ hypotheses. [less ▲]

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See detailMultifunctional poly(ionic liquid)s: from synthesis to applications in energy and environment
Detrembleur, Christophe ULiege; Patil, Nagaraj ULiege; Debuigne, Antoine ULiege et al

Conference (2017, May 24)

Poly(ionic liquid)s (PILs) are a subclass of polyelectrolytes that gained an enabling role in many fields of polymer chemistry and material science. PILs combine the unique properties of ionic liquids ... [more ▼]

Poly(ionic liquid)s (PILs) are a subclass of polyelectrolytes that gained an enabling role in many fields of polymer chemistry and material science. PILs combine the unique properties of ionic liquids with the flexibility and properties of macromolecules, and provide novel attractive functions. Recently, the precision design of novel PILs by controlled/living polymerization (CLP) techniques was intensively searched for developing emerging applications. This talk will first discuss recent routes for the precision synthesis of all vinyl-imidazolium based (co)polymers in water or in organic media under non-demanding experimental conditions. We will then describe the preparation of innovative redox and surface active PILs, and show the potential of these PILs in battery applications and for multifunctional coatings. More specifically, we will show how macromolecular engineering can be exploited for designing innovative polymer cathodes for ultra-high performance Li storage with unprecedented performances (high capacities and ultra-long life-span over more than 3000 cycles at an extreme current-rate). This innovative and effective molecular design for polymer cathodes opens up new horizons in developing an economical and environmentally benign platform for large-scalable fabrication of high performance batteries. [less ▲]

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See detailPolyphosphoesters: new trends in synthesis and drug delivery applications
Jérôme, Christine ULiege

Conference (2017, May 24)

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See detailCe que devait encore révéler le site de la Schola del Traiano à Ostia Antica
Morard, Thomas ULiege

Conference (2017, May 24)

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See detailOral communication: Brassica napus L. plantlets affected during in vitro growth by the presence of epoxiconazole.
Durenne, Bastien ULiege; Blondel, Alodie; Ducat, Nathalie et al

Conference (2017, May 24)

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See detailTime, preference and intensity: A contrastive study of rather (than) and eerder (dan)
Ghesquière, Lobke; Brems, Lieselotte ULiege

Conference (2017, May 24)

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See detailHuman Nature and Nature in Kant and Hegel: A modal Approach
Lejeune, Guillaume ULiege

Conference (2017, May 23)

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See detailFlux et suspension. Indétermination de l'image cinématographique (J. Rancière)
Hagelstein, Maud ULiege

Conference (2017, May 23)

Dans le sillage de la critique des médias de masse, le champ de la théorie de l’image contemporaine mobilise de plus en plus souvent la métaphore du flux. L’homme baigne aujourd’hui dans un flux continu ... [more ▼]

Dans le sillage de la critique des médias de masse, le champ de la théorie de l’image contemporaine mobilise de plus en plus souvent la métaphore du flux. L’homme baigne aujourd’hui dans un flux continu de stimulations visuelles dont il peut difficilement se déprendre. Le cinéma et la télévision – par l’opération de montage continu qui les définit – génèrent une expérience temporelle spécifique, où le rythme plus ou moins soutenu des images inonde les écrans d’informations visuelles. Selon Rancière, dans le cinéma documentaire prioritairement, le montage-flux laisse aussi la place à des images d’un autre type : des plans indéterminés ou a-signifiants, des moments de suspension, pris dans la diégèse du film mais sans justification évidente. Ce sont « comme des stases de l’action, des moments de repos ou de rêve » (cf. « Figures de l’histoire »), qui brisent le flux ou le diffractent. [less ▲]

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See detailStudy of volatile organic compounds active against barley pathogens
De Clerck, Caroline ULiege; Kaddes, Amine ULiege; Fiers, Marie et al

Conference (2017, May 23)

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