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See detailOn the Elaboration of Metal-Ceramic Composite Coatings by Laser Cladding
Mertens, Anne ULg; L'Hoest, Thibaut; Magnien, Julien et al

in Materials Science Forum (in press)

This paper reports on a preliminary investigation into the elaboration, by the additive process known as laser cladding, of composite coatings with a matrix of stainless steel 316L reinforced with varying ... [more ▼]

This paper reports on a preliminary investigation into the elaboration, by the additive process known as laser cladding, of composite coatings with a matrix of stainless steel 316L reinforced with varying contents of tungsten (WC) or silicon carbides (SiC) particles. Laser cladding is characterised by ultra-fast solidification and cooling rates, thus giving rise to ultra-fine out-of-equilibrium microstructures and potentially enhanced mechanical properties. Both types of composite coatings – i.e. with SiC or WC ‒ are compared in terms of their microstructures and hardness. Special attention is given to the dissolution of the carbides particles and to interfacial reactions taking place between the particles and the metallic matrix. [less ▲]

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See detailLes lois belges et luxembourgeoises
Desseilles, François ULg; de Clippele, Marie-Sophie

in Bady, Jean-Pierre; Cornu, Marie; Fromageau, Jérôme (Eds.) et al De 1913 au Code du patrimoine, une loi en évolution (in press)

La présente contribution met en parallèle trois législations – les lois française de 1913, luxembourgeoise de 1927 et belge de 1931 – au moment de leur publication respective. La confrontation est ... [more ▼]

La présente contribution met en parallèle trois législations – les lois française de 1913, luxembourgeoise de 1927 et belge de 1931 – au moment de leur publication respective. La confrontation est effectuée quant à la forme de ces législations. Il s’agit de voir s’il y a ou non une certaine « identité des actes » – en quelque sorte savoir si leur aspect extérieur se ressemble ou non (intitulé, structure, etc.) (1er chapitre). La confrontation exercée d’un point de vue formel n’est jamais loin de la confrontation conceptuelle en ce que l’ « identité de formulation » – tant article par article que selon la place qu’occupent les articles dans l’acte ou les « lacunes » - laisse la possibilité, d’une part, d’évoquer la réutilisation de mécanismes juridiques antérieurs voire le comblement de lacunes par des législations ultérieures et, d’autre part, permet d’entrer dans la comparaison des concepts à l’aide des sources officielles et non-officielles. C’est ce que nous tenterons de voir dans une seconde partie, au travers de l’analyse historique des législations belge et luxembourgeoise, au regard de la législation française (2e chapitre). [less ▲]

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See detailMarket efficiency and hedge fund trading strategies
Platania, Federico ULg; Lambert, Marie ULg; Papageorgiou, Nicolas

E-print/Working paper (in press)

Stock and option markets can at times reflect differing information. We identify three reasons for the presence of these periods of "disagreement" between the cash and derivatives markets: 1) high ... [more ▼]

Stock and option markets can at times reflect differing information. We identify three reasons for the presence of these periods of "disagreement" between the cash and derivatives markets: 1) high volatility and noise trading; 2) high level of risk aversion; 3) speculation versus hedging trades. This paper investigates the role that hedge funds, a proxy for sophisticated investors, play in the price discovery process between stock and option markets and the disagreement/agreement periods. We observe that a disparity in information between the two markets is often associated with deleveraging in directional exposures and reversal strategies. Posterior to the event, active tactical asset allocation in small and value factor investing takes place. We investigate four specific macro events which resulted in significant rebalancing by hedge fund manegers: the Thai Baht depreciation, the Dot-com bubble, the credit crunch and the Nasdaq correction. [less ▲]

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See detailL’apport du biofeedback dans le traitement des troubles de la voix
Remacle, Angélique ULg; Boughabi, Loubna; Morsomme, Dominique ULg

in Actes des XVIèmes Rencontres internationales d’orthophonie (in press)

It has recently become possible to monitor patients’ voices outside the speech therapist’s office with a portable, easy-to-use tool: the voice dosimeter. This tool measures voice frequency and sound ... [more ▼]

It has recently become possible to monitor patients’ voices outside the speech therapist’s office with a portable, easy-to-use tool: the voice dosimeter. This tool measures voice frequency and sound pressure level, as well as the duration of phonation, during a full day of regular activities. In addition to voice accumulation in an ecological context, the dosimeter used in this study (VoxLog, Sonvox) gives patients feedback on their voice use. In practice, the clinician configures the device so that it provides a vibratory signal in real time when the patient speaks above or below a predetermined frequency or sound pressure threshold. The feedback is intended to make patients aware of inappropriate vocal behavior and encourage them to change it. In this case study, we used biofeedback with the aim of reducing sound pressure level for a teacher suffering from vocal fold nodules. Our goal was to determine whether vibrotactile biofeedback applied in an ecological context for three consecutive weeks could reduce excess sound pressure. The feedback was activated every time the teacher spoke too loudly; its purpose was to help her avoid vocal abuse and (re)learn healthy vocal behaviors. This preliminary study generated encouraging results regarding the use of biofeedback in voice treatment. Nevertheless, it is important to investigate how this tool can best be implemented for patient management in speech language pathology. In addition, the method should be validated with randomized studies using a larger sample. [less ▲]

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See detailOrigine et histoire de la folie : un nouveau Foucault, un nouveau fou
Englebert, Jérôme ULg

in Evolution Psychiatrique (in press)

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See detailMicrosyntaxe et macrosyntaxe des lexèmes _chaitif_, _dolent_, _las_ et _maleuré/maleureus_ en français médiéval. De l'adjectif au locutif
Mazziotta, Nicolas ULg

in Actes du 5e Congrès Mondial de Linguistique Française (CMLF) (in press)

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See detailA Machine Learning-Based Approximation of Strong Branching
Marcos Alvarez, Alejandro ULg; Louveaux, Quentin ULg; Wehenkel, Louis ULg

in INFORMS Journal on Computing (in press)

We present in this paper a new generic approach to variable branching in branch-and-bound for mixed- integer linear problems. Our approach consists in imitating the decisions taken by a good branching ... [more ▼]

We present in this paper a new generic approach to variable branching in branch-and-bound for mixed- integer linear problems. Our approach consists in imitating the decisions taken by a good branching strategy, namely strong branching, with a fast approximation. This approximated function is created by a machine learning technique from a set of observed branching decisions taken by strong branching. The philosophy of the approach is similar to reliability branching. However, our approach can catch more complex aspects of observed previous branchings in order to take a branching decision. The experiments performed on randomly generated and MIPLIB problems show promising results. [less ▲]

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See detailP.PalauRib. inv. 391 : lettre réutilisée comme exercice d’écriture
Carlig, Nathan ULg

in Coptica Barcinonensia. Texts and Documents from the 5th International Seminar of Coptic Papyrology (Barcelone, 6-13 July 2014) (in press)

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See detailLa qualité de vendeur professionnel : incidence sur la formation et l'exécution du contrat de vente d'immeuble
Kohl, Benoît ULg; Rigolet, Alexandre ULg

in La rédaction des clauses. Examen systématique et pratique (in press)

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See detailRéexamen de la tablette scolaire T.Louvre inv. AF 1195 (Antinoé, VIe siècle = MP³ 2714.01)
Carlig, Nathan ULg

in Davoli, Paola; Pellé, Natascia (Eds.) Polymatheia. Studi offerti a Mario Capasso (in press)

Réexamen et nouvelle édition de la tablette scolaire T.Louvre inv. AF 1195 (MP³ 2714.1)

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See detailPlaton héritier de Protagoras. Un dialogue sur les fondements de la démocratie
Gavray, Marc-Antoine ULg

Book published by Vrin (in press)

Protagoras est un sophiste, les sophistes sont les ennemis de Platon… De ce syllogisme, la conclusion semble évidente. Elle appelle cependant quelques nuances. Plus qu’un ennemi, Protagoras apparaît en ... [more ▼]

Protagoras est un sophiste, les sophistes sont les ennemis de Platon… De ce syllogisme, la conclusion semble évidente. Elle appelle cependant quelques nuances. Plus qu’un ennemi, Protagoras apparaît en effet chez Platon comme une figure exemplaire, un interlocuteur valable qui, à travers son affirmation selon laquelle l’homme est la mesure de toutes choses, incarne la démocratie, ses conditions et ses conséquences. Ce livre traite le thème général, et classique, de l’opposition entre sophistique et philosophie, mais en le limitant à une seule question dont il déploie les différentes facettes : l’idée de mesure. Il reconstitue une pensée « protagoréenne » qui replace Platon dans son contexte intellectuel et montre comment, à travers la figure de Protagoras, c’est le débat avec la démocratie qui se joue, non seulement en tant que régime politique, mais aussi en tant que modèle théorique aux implications multiples (épistémologiques, morales, pédagogiques, techniques). Sur quel critère fonder la mesure ? Comment concevoir l’expertise et le savoir ? Quel rôle attribuer au langage dans l’éducation ? Que faire de l’identité du sujet dans le processus de mémoire ? Comment penser l’unité de la Cité ? Autant de questions soulevées dans le dialogue avec le modèle protagoréen. Comprendre ce que Platon doit à Protagoras, c’est ainsi chercher par quels éléments cette pensée l’a mis au défi et par réaction à quoi il a élaboré sa propre théorie de la mesure, de l’expertise, de l’éducation et de l’unité politique. [less ▲]

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See detailComparison of local outliers detection techniques in spatial multivariate data
Ernst, Marie ULg; Haesbroeck, Gentiane ULg

in Data Mining & Knowledge Discovery (in press)

Outlier detection techniques in spatial data should allow to identify two types of outliers: global and local ones. Local outliers typically have non-spatial attributes that strongly differ from those ... [more ▼]

Outlier detection techniques in spatial data should allow to identify two types of outliers: global and local ones. Local outliers typically have non-spatial attributes that strongly differ from those observed on their neighbors. Detecting local outliers requires to be able to work locally, on neighborhoods, in order to take into account the spatial dependence between the statistical units under consideration, even though the outlyingness is usually measured on the non-spatial variables. Many procedures have been outlined in the literature, but their number reduces when one wants to deal with multivariate non-spatial attributes. In this paper, focus is on the multivariate context. A review of existing procedures is done. A new approach, based on a two-step improvement of an existing one, is also designed and compared with the benchmarked methods by means of examples and simulations. [less ▲]

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See detailIs it possible to improve communication around radiotherapy delivery: A randomized study to assess the efficacy of team training?
Liénard, Aurore; Delevallez, France; Razavi, Darius et al

in Radiotherapy & Oncology (in press)

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See detailImages et rituel : l’exemple des pinakes de Locres Épizéphyrienne
Collard, Hélène ULg

in Jaccottet, Anne-Françoise (Ed.) Rituels en image – Images de rituel (in press)

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See detailOpen Science: a revolution in sight?
Rentier, Bernard ULg

in Interlending & Document Supply (in press)

• Purpose This article aims at describing the evolution of scientific communication, largely represented by the publication process. It notes the disappearance of the traditional publication on paper and ... [more ▼]

• Purpose This article aims at describing the evolution of scientific communication, largely represented by the publication process. It notes the disappearance of the traditional publication on paper and its progressive replacement by electronic publishing, a new paradigm implying radical changes in the whole mechanism. It aims also at warning the scientific community about the dangers of some new avenues and why, rather than subcontracting an essential part of its work, it must take back a full control of its production. • Design/methodology/approach The article reviews the emerging concepts in scholarly publication and aims to answer frequently asked questions concerning free access to scientific literature as well as to data, science and knowledge in general. • Findings The article provides new observations concerning the level of compliance to institutional open access mandates and the poor relevance of journal prestige for quality evaluation of research and researchers. The results of introducing an open access policy at the University of Liège are noted. • Social implications Open access is, for the first time in human history, an opportunity to provide free access to knowledge universally, regardless of either the wealth or the social status of the potentially interested readers. It is an essential breakthrough for developing countries. • Value Open access and Open Science in general must be considered as common values that should be shared freely. Free access to publicly generated knowledge should be explicitly included in universal human rights. There are still a number of obstacles hampering this goal, mostly the greed of intermediaries who persuade researchers to give their work for free, in exchange for prestige. The worldwide cause of Open Knowledge is thus a major universal issue for the 21st Century. [less ▲]

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See detailSoil processes drive the biological silicon feedback loop
Cornelis, Jean-Thomas ULg; Delvaux, Bruno

in Functional Ecology (in press)

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See detailRapid Effects of Estrogens on Avian Brain and Social Behavior
Remage-Healey, Luke; Heimovics, Sarah A.; Soma, Kiran K et al

in Pfaff, Donald W; Arnold, Arthur P; Etgen, Anne M (Eds.) et al Hormones, Brain and Behavior (in press)

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See detailA combined transmission spectrum of the Earth-sized exoplanets TRAPPIST-1 b and c
de Wit, Julien; Wakeford, Hannah R.; Gillon, Michaël ULg et al

in Nature (in press)

Three Earth-sized exoplanets were recently discovered close to the habitable zone of the nearby ultracool dwarf star TRAPPIST-1. The nature of these planets has yet to be determined, since their masses ... [more ▼]

Three Earth-sized exoplanets were recently discovered close to the habitable zone of the nearby ultracool dwarf star TRAPPIST-1. The nature of these planets has yet to be determined, since their masses remain unmeasured and no observational constraint is available for the planetary population surrounding ultracool dwarfs, of which the TRAPPIST-1 planets are the first transiting example. Theoretical predictions span the entire atmospheric range from depleted to extended hydrogen-dominated atmospheres. Here, we report a space-based measurement of the combined transmission spectrum of the two inner planets made possible by a favorable alignment resulting in their simultaneous transits on 04 May 2016. The lack of features in the combined spectrum rules out cloud-free hydrogen-dominated atmospheres for each planet at 10-$\sigma$ levels; TRAPPIST-1 b and c are hence unlikely to harbor an extended gas envelope as they lie in a region of parameter space where high-altitude cloud/haze formation is not expected to be significant for hydrogen-dominated atmospheres. Many denser atmospheres remain consistent with the featureless transmission spectrum---from a cloud-free water vapour atmosphere to a Venus-like atmosphere. [less ▲]

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See detailUse of Tyrosine Kinase Inhibitors to Prevent Relapse After Allogeneic Hematopoietic Stem Cell Transplantation for Patients With Philadelphia Chromosome–Positive Acute Lymphoblastic Leukemia: A Position Statement of the Acute Leukemia Working Party of the European Society for Blood and Marrow Transplantation
Giebel, S.; Czyz, A.; Ottmann, O. et al

in Cancer (in press)

Allogeneic hematopoietic stem cell transplantation (alloHSCT) is a standard of care for patients with Philadelphia chromosome (Ph)–positive acute lymphoblastic leukemia (ALL). The introduction of tyrosine ... [more ▼]

Allogeneic hematopoietic stem cell transplantation (alloHSCT) is a standard of care for patients with Philadelphia chromosome (Ph)–positive acute lymphoblastic leukemia (ALL). The introduction of tyrosine kinase inhibitors (TKIs) to first-line therapy has improved overall outcomes; however, a significant proportion of patients still relapse after alloHSCT. Posttransplant TKI maintenance was demonstrated to reduce the risk of relapse in a large retrospective study and, therefore, should be considered a valuable option. This consensus paper, written on behalf of the Acute Leukemia Working Party of the European Society for Blood and Marrow Transplantation, presents an overview of clinical studies on the use of TKIs after alloHSCT and proposes practical recommendations regarding the choice of TKI, treatment timing, and dosage. It is hoped that these recommendations will become the state of art in this field and, more importantly, lead to a reduction of Ph-positive ALL relapse after alloHSCT. [less ▲]

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