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See detailClosed form solution of the stochastic torsional flutter of an 1 aeroelastic oscillator under buffeting loads
Heremans, Julien ULiege; Denoël, Vincent ULiege; Mayou, Anass ULiege

in Journal of Wind Engineering and Industrial Aerodynamics (in press)

The complete flutter analysis of a structure requires the repeated analysis of the aeroelastic response of the structure for various wind velocities. In a spectral approach, each of these analyses is ... [more ▼]

The complete flutter analysis of a structure requires the repeated analysis of the aeroelastic response of the structure for various wind velocities. In a spectral approach, each of these analyses is based on the integration of the power spectral density of the aeroelastic response. Traditional integration methods struggle to efficiently estimate these integrals because of the marked eakedness of the function in the neighborhood of the poles of the system. In this paper, we have derived an extension of the Background/Resonant decomposition (which is commonly applied under the quasi-steady assumption), to aeroelastic analysis, where the stiffness and damping of the coupled system changes with frequency. Both the background and resonant components take a more general form than in the well known case. They remain simple, however, and offer therefore a straightforward understanding of the response. The proposed formulation is illustrated with several examples of torsional flutter, where the critical state corresponds either to torsional galloping either to divergence. The study is limited to single degree-of-freedom systems but constitute the cornerstone of an extension to multi degree-of-freedom systems, where such an approximation becomes very interesting in terms of computational efficiency. [less ▲]

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See detailAjustement psychoclinique de l’adulte et de l’enfant dans le champ de l’oncologie : perspective du patient et du proche
Vander Haegen, Marie ULiege; Stassart, Céline ULiege; Tilkin, Caroline ULiege et al

in Muller, Laurent; Dany, Luc (Eds.) Pratiques et interventions en psychologie de la santé. (in press)

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See detailEmergency support of transmission voltages by active distribution networks: a non-intrusive scheme
Pabon Ospina, Luis David; Van Cutsem, Thierry ULiege

in IEEE Transactions on Power Systems (in press)

Non-negligible amounts of Distributed Generating Units (DGUs) are already connected to power systems, predominantly to medium- and low-voltage networks. The interaction between distribution and ... [more ▼]

Non-negligible amounts of Distributed Generating Units (DGUs) are already connected to power systems, predominantly to medium- and low-voltage networks. The interaction between distribution and transmission systems is gaining the attention of system operators. Given the high controlability of DGUs, the active distribution networks can potentially support the transmission system during emergency situations. Previously proposed voltage emergency controls involving distribution network assets focused on preserving the transmission system integrity, even if it implies affecting the distribution system operation (intrusive schemes). More attention needs to be devoted to supporting transmission voltages, while preserving the distribution network operation (non-intrusive schemes). This paper introduces a new adaptive and non-intrusive voltage emergency control scheme based on the synchronization of DGUs and the load tap changer of the corresponding distribution transformer. The conclusions are derived from time-domain simulations using an extended version of the IEEE Nordic test system for voltage stability assessment. [less ▲]

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See detailAdorno en France. La constellation "Arguments" comme dialogue critique
Franck, Thomas ULiege

Book published by Presses Universitaires de Rennes (in press)

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See detailRhétorique inclusive et discrimination dans “Education et diversité. Les fondamentaux de l’action"
Shaik, Farah Jeelani ULiege; Verhoeven, Marie

in Lorcerie, Françoise; Manzo, A.; Potvin, M. (Eds.) et al Education et diversité. Les fondamentaux de l’action (in press)

Ce texte compare les politiques inclusives visant la prise en charge des enfants ‘à besoins spécifiques’ et celle des élèves issus de l’immigration. Il s’attache d’abord à montrer comment, dans ces deux ... [more ▼]

Ce texte compare les politiques inclusives visant la prise en charge des enfants ‘à besoins spécifiques’ et celle des élèves issus de l’immigration. Il s’attache d’abord à montrer comment, dans ces deux domaines, le récit politique européen autour de l’inclusion s’inscrit dans le référentiel du capital humain et de la cohésion sociale, et cible aussi davantage les individus minorisés que les structures éducatives. Il se penche ensuite sur les processus complexes de traduction de ces recommandations au sein du système éducatif belge francophone. Les auteures soutiennent que ces orientations politiques, relevant de la soft governance, ne s’attaquent pas aux structures éducatives en place et peinent ainsi à enrayer les mécanismes producteurs de différenciation à l’œuvre au sein du quasi-marché scolaire. Le texte formule enfin quelques recommandations en vue d’une politique inclusive ambitieuse en termes de justice sociale, nécessitant d’agir conjointement sur les processus cognitifs de stigmatisation et sur les structures scolaires. [less ▲]

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See detail"La voix d'un suicide continu" - Henri Meschonnic liest Ingeborg Bachmann
Viehöver, Vera ULiege

in Henri Meschonnics Rhythmuskonzept in Übersetzung und Übersetzungsforschung (in press)

Abstract: In autumn 2003, on the occasion of the thirtieth anniversary of Ingeborg Bachmann's death, an issue of the literary journal Europe was dedicated to her, to which several prominent ... [more ▼]

Abstract: In autumn 2003, on the occasion of the thirtieth anniversary of Ingeborg Bachmann's death, an issue of the literary journal Europe was dedicated to her, to which several prominent representatives of French literary theory contributed: Jean-Luc Nancy, Hélène Cixous and Henri Meschonnic, among others. Meschonnic's contribution is, in keeping with the occasion, a homage in which he conveys his image of the Austrian poetess in the form of a highly selective reading of Bachmann's poems and writings, with the quoted verses each translated by himself. At the same time, however, it serves him to present a core idea of his poetics of rythm in a very dense form: “J’appelle poème la transformation d’une forme de vie par une forme de langage et la transformation d'une forme de langage par une forme de vie” (2007b: 27). For Meschonnic, Bachmann – like Celan – illustrates perfectly the inseparability of life and writing in what he calls poème. The article first reconstructs Meschonnic's first encounters with Bachmann’s work and shows why in the 1980s, in the course of his work on La Rime et la vie (1989), the Frankfurt Lectures aroused his interest in the Austrian poet and why he felt confirmed by Bachmann in his analysis of the situation of contemporary poetry in France. In the second chapter, Meschonnic’s concept of the poetic subject will be explained in its basic features, whereas the third chapter will work out to what extent Bachmann’s vie-écriture, from Meschonnic's point of view, honours what he has repeatedly formulated in his works: “le rythme est une forme-sujet”. The final chapter is dedicated to Meschonnic’s own fragmentary translations, which are interwoven into the homage. As far as possible, given the fragmentary nature of the translations, it attempts to specify what constitutes Bachmann’s “rhythm” for Meschonnic. [less ▲]

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See detailPractising theory, theorising the practice: from C. Brandi to S.Munoz Vinas.
Verbeeck, Muriel ULiege

in Congreso Internacional de Teorías e Historia de la Conservación (in press)

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See detailMergers in the Digital Economy
Gautier, Axel ULiege; Lamesch, Joé ULiege

in Information Economics and Policy (in press)

Over the period 2015-2017, the five giant technologically leading firms, Google, Amazon, Facebook, Apple and Microsoft (GAFAM) acquired 175 companies, from small startups to billion dollar deals. In this ... [more ▼]

Over the period 2015-2017, the five giant technologically leading firms, Google, Amazon, Facebook, Apple and Microsoft (GAFAM) acquired 175 companies, from small startups to billion dollar deals. In this paper, we provide detailed information and statistics on the merger activity of the GAFAM and on the characteristics of the firms they acquire. One of the most intriguing features of these acquisitions is that, in the majority of cases, the product of the target is discontinued under its original brand name post acquisition and this is especially true for the youngest firms. There are three reasons to discontinue a product post acquisition: the product is not as successful as expected, the acquisition was not motivated by the product itself but by the target's assets or R\&D effort, or by the elimination of a potential competitive threat. While our data does not enable us to screen between these explanations, the present analysis shows that most of the startups are killed in their infancy. This important phenomenon calls for tighter intervention by competition authorities in merger cases involving big techs. [less ▲]

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See detailLe philosophe dans l'atelier. Sartre et Giacometti en miroir
Franck, Thomas ULiege

Book published by Presses Universitaires de Liège (in press)

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See detailCarte géologique de Wallonie (Belgique) 1/10.000. 54/2 Ciney
Marion, Jean-Marc ULiege; Barchy, Laurent

Cartographic material (in press)

New geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using previous scientific data produced since the previous editions in 1882-83 (1/20.000, by Dupont ... [more ▼]

New geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using previous scientific data produced since the previous editions in 1882-83 (1/20.000, by Dupont, Mourlon and Purves) and 1905 (1/40.000, by Mourlon and Dewalque). [less ▲]

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See detailLE PLAFOND DE VERRE À L’ÉGALITÉ PROFESSIONNELLE HOMMES-FEMMES DANS LES DIVISIONS PROVINCIALES DE LA FONCTION PUBLIQUE DU HAUT-KATANGA EN RDC
Kitenge Maningo, Sara ULiege

in Le (in press)

Cette étude est faite dans la fonction publique en RDC, elle consiste à identifier les barrières individuelles, organisationnelles et sociétaux qui empêchent les femmes à accéder aux postes supérieurs ... [more ▼]

Cette étude est faite dans la fonction publique en RDC, elle consiste à identifier les barrières individuelles, organisationnelles et sociétaux qui empêchent les femmes à accéder aux postes supérieurs. Celles-ci peuvent créer une démotivation et un manque de confiance de la part des femmes envers les organisations. L’observation faite dans les divisions provinciales de la fonction publique du Haut-Katanga est qu’ aux emplois de collaboration les femmes représentent 21% contre 79% d’hommes, à ceux de coordination et d’encadrement 12% contre 88%, aucune femme directeur de province. L’objectif est d’identifier les causes du plafond de verre dans ces divisions et proposer une piste de solution pour l’amélioration de l’égalité professionnelle hommes-femmes. Nos résultats ont identifié quatre barrières : la différence ethnoculturelle, les promotions subjectives suite aux interférences politiques, le harcèlement sexuel et le manque de politique écrite d’égalité hommes-femmes. [less ▲]

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See detailErotische Literatur von Frauen – Lust und Unlust (1990-2010)
Pontzen, Alexandra ULiege

in Andrin, Muriel; Loriaux, Stéphanie; Tabah, Mireille (Eds.) et al Pratiques de l'intime : Écrire, filmer, commenter la sexualité au féminin (in press)

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See detailProf en République Démocratique du Congo : un métier de femmes ?
Kitenge Maningo, Sara ULiege

in Le (in press)

L’égalité des sexes est un droit pour tous, et sa réalisation n’est pas uniquement bénéfique aux femmes, mais pour tous. Particulièrement au niveau de la recherche et de l’enseignement supérieur, on a ... [more ▼]

L’égalité des sexes est un droit pour tous, et sa réalisation n’est pas uniquement bénéfique aux femmes, mais pour tous. Particulièrement au niveau de la recherche et de l’enseignement supérieur, on a tout intérêt à exploiter l’ensemble du potentiel humain, à mobiliser tous les talents. Exclure les femmes, c’est en effet gaspiller des compétences ! Petit tour d’horizon de la situation académique en RDC, et piste de solutions. [less ▲]

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See detail*Corticea
Pfister, Max; Valenti, Gianluca ULiege

in Lessico Etimologico Italiano (in press)

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See detailIntra‑articular injections of platelet‑rich plasma in symptomatic knee osteoarthritis: a consensus statement from French‑speaking experts
Eymard, F; Ornetti, P; Maillet, J et al

in Knee Surgery, Sports Traumatology, Arthroscopy (in press)

Purpose There has been much debate regarding the use of intra-articular injections of platelet-rich plasma (PRP) as symptomatic treatment for knee osteoarthritis. The objective of this consensus was to ... [more ▼]

Purpose There has been much debate regarding the use of intra-articular injections of platelet-rich plasma (PRP) as symptomatic treatment for knee osteoarthritis. The objective of this consensus was to develop guidelines for PRP injections in knee osteoarthritis according to the French National Authority for Health recommendations. Methods Fifteen physicians from different French-speaking countries (10 rheumatologists, 4 specialists in rehabilitation and sports medicine and 1 radiologist) were selected for their expertise in the areas of PRP and osteoarthritis. A comprehensive literature review was conducted on Medline including all published therapeutic trials, open studies, meta-analysis and systematic reviews focusing on the effects of PRP in knee OA, as well as fundamental studies concerning the characteristics of the various types of PRP and their mechanisms, indexed before April 2019. Using the method recommended by the French National Authority for Health inspired by the Delphi consensus process, 25 recommendations were finally retained and evaluated. The recommendations were classified as appropriate or not appropriate, with strong or relative agreement, or uncertain if a consensus was not achieved. Results Among the 25 recommendations selected, the main ones are the following: (1) Intra-articular injections of PRP are an effective symptomatic treatment for early to moderate knee osteoarthritis. This recommendation was considered appropriate with a relative agreement (Median = 8; rank = 6–9). Level of evidence 1A. (2) A PRP treatment sequence in knee osteoarthritis may include 1–3 injections. This recommendation was considered appropriate with a strong agreement (Median = 9; rank = 7–9). Level of evidence 1A. (3) Leucocytes-poor PRP should be preferred in knee osteoarthritis. This recommendation was considered appropriate with a relative agreement (Median = 8; rank = 5–9). Level of evidence 5. (4) Intra-articular PRP knee injections should be performed under ultrasound or fluoroscopic guidance. This recommendation was considered uncertain with no consensus (Median = 8; rank = 3–9). Level of evidence 5. (5) PRP should not be mixed with an anesthetic or intra-articular corticosteroid. This recommendation was considered appropriate with a relative agreement (Median = 9; rank = 6–9). Level of evidence 5 Conclusion Those 25 recommendations should standardize and facilitate the use of IA PRP injections, which are considered by experts as an effective treatment especially in early or moderate knee OA. Although a strong or relative agreement from the experts was obtained for most of the recommendations, many of them had a very low level of evidence (Level 5) and were principally based on the clinical experience of the experts. [less ▲]

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See detailClinical and Radiographic Assessment of Circular Versus Triangular cross-section neck Implants in the Posterior Maxilla: A 1-year Randomized Controlled Trial
LI MANNI, Lou ULiege; LECLOUX, Geoffrey ULiege; Rompen, Eric ULiege et al

in Clinical Oral Implants Research (in press)

Objectives: Implants with a triangular neck were recently introduced to limit peri-implant bone loss. The primary objective of this randomized controlled trial was to compare peri-implant bone changes of ... [more ▼]

Objectives: Implants with a triangular neck were recently introduced to limit peri-implant bone loss. The primary objective of this randomized controlled trial was to compare peri-implant bone changes of circular versus triangular cross-section neck implants 1-year after loading. The secondary objectives were to assess buccal hard tissue thickness changes, Pink Esthetic Score (PES) and patient satisfaction. Material and methods: Thirty four patients requiring replacement of the single, intercalated missing tooth of healed site for at least 4 months in the posterior maxilla were randomized into 2 groups according to the type of implant. Immediately after surgery and 1 year after final restoration, a cone beam CT (CBCT) was performed to assess proximal bone remodeling and buccal bone thickness. Peri-implant soft tissue health, PES and patient-reported outcome measures (PROMs) were recorded. Results: No implant loss occurred within the follow-up period. The mean ± SD peri-implant proximal bone loss 1-year after loading was 0.22 ± 0.30 mm for triangular and 0.42 ± 0.67 mm for circular implants necks (p=0.25). Peri-implant bone loss exceeding 2 mm was observed in a single implant in the circular neck group. Buccal bone thickness remained stable and did not differ different between the 2 groups. The peri-implant soft tissue health, PES and patient satisfaction were also comparable. Conclusions: Within the limitations of the present study, patient clinical and radiographic outcomes did not differ between triangular and circular cross-section neck implants in the posterior maxilla. [less ▲]

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See detailAdvancing the synthesis of isocyanate-free poly(oxazolidones)s: scope and limitations
Habets, Thomas ULiege; Siragusa, Fabiana ULiege; Grignard, Bruno ULiege et al

in Macromolecules (in press)

Poly(oxazolidone) is an emerging class of polyur- ethanes (PUs) that is easily accessible by an isocyanate-free pathway via the step-growth copolymerization of CO2-based monomers (bis(α-alkylidene cyclic ... [more ▼]

Poly(oxazolidone) is an emerging class of polyur- ethanes (PUs) that is easily accessible by an isocyanate-free pathway via the step-growth copolymerization of CO2-based monomers (bis(α-alkylidene cyclic carbonate)s) with primary diamines at room temperature. Here, we explore the scope and limitation of this process by investigating the influence of the diamine and the reaction conditions on the structure and macromolecular parameters of the polymer. Less hindered diamines (aliphatic and benzylic) provide selectively poly- (hydroxyoxazolidone)s, whereas the bulkier ones (cycloaliphatic) furnish polymer chains bearing two types of linkages, oxo- urethane and hydroxyoxazolidone ones. The increase of the reaction temperature or the addition of DBU as a catalyst enables to accelerate the polymerizations. The quantitative polymer dehydration is also achieved by refluxing in acetic acid, providing a new class of unsaturated poly(oxazolidone)s composed of α-alkylidene oxazolidone linkages (for hindered polymers) or a mixture of α- and β-alkylidene oxazolidone linkages (for the less hindered ones). These unsaturated poly(oxazolidone)s present a high glass transition temperature (90 °C ≤ Tg ≤ 130 °C) and a remarkable thermal stability (Td > 360 °C), rendering these polymers attractive for applications requiring high temperatures. This work is therefore opening an avenue to novel functional isocyanate-free PUs, with the pendant hydroxyl or olefin groups that are expected to be easily derivatized. [less ▲]

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See detailChemo- and regio-selective additions of nucleophiles to cyclic carbonates for the preparation of self-blowing non-isocyanate polyurethane foams
Monie, Florent ULiege; Grignard, Bruno ULiege; Thomassin, Jean-Michel ULiege et al

in Angewandte Chemie International Edition (in press)

Polyurethane (PU) foams are indisputably daily essential materials found in many applications, notably for comfort (e.g. matrasses) or energy saving (e.g. thermal insulation). Today, greener routes for ... [more ▼]

Polyurethane (PU) foams are indisputably daily essential materials found in many applications, notably for comfort (e.g. matrasses) or energy saving (e.g. thermal insulation). Today, greener routes for their production are intensively searched for avoiding the use of toxic isocyanates. We now describe an easily scalable process for the simple construction of self-blown isocyanate-free PU foams by exploiting the organocatalyzed chemo- and regio-selective additions of amines and thiols to easily accessible cyclic carbonates. These reactions are first validated on model compounds and rationalized by DFT calculations. Various foams are then prepared and characterized in terms of morphology and mechanical properties, and the scope of the process is illustrated by modulating the composition of the reactive formulation. Due to the impressive diversity and accessibility of the main components of the formulations, this new robust and solvent- free process is opening avenues for constructing more sustainable PU foams, and offers the first realistic alternative to the traditional isocyanate route. Introduction [less ▲]

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