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See detailThe prediction of fund failure through performance diagnostics
Cogneau, Philippe ULg; Hübner, Georges ULg

in Journal of Banking and Finance (2015), 50

Using an international database featuring 1624 mutual funds over 15 years, this paper analyses the joint abilities of performance measures to predict subsequent fund failure. We examine the probability of ... [more ▼]

Using an international database featuring 1624 mutual funds over 15 years, this paper analyses the joint abilities of performance measures to predict subsequent fund failure. We examine the probability of disappearance over a time window, and expected fund survival time, and study the circumstances of a fund’s disappearance, its currency and domicile. By combining relevant measures, fund failure appears to a significant extent predictable, more than with single classical measures. Survivorship predictability has significant economic value. Such evidence suggests that past performance does not only influence investors’ perception of fund quality, but also reflects managers’ ability to sustain performance. [less ▲]

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See detailThe Harmonic Balance Method for Bifurcation Analysis of Nonlinear Mechanical Systems
Detroux, Thibaut ULg; Renson, Ludovic ULg; Masset, Luc ULg et al

in Proceedings of the SEM IMAC XXXIII (2015)

Because nowadays structural engineers are willing to use or at least understand nonlinearities instead of simply avoiding them, there is a need for numerical tools performing analysis of nonlinear large ... [more ▼]

Because nowadays structural engineers are willing to use or at least understand nonlinearities instead of simply avoiding them, there is a need for numerical tools performing analysis of nonlinear large-scale structures. Among these techniques, the harmonic balance (HB) method is certainly one of the most commonly used to study finite element models with reasonably complex nonlinearities. However, in its classical formulation the HB method is limited to the approximation of periodic solutions. For this reason, the present paper proposes to extend the method to the detection and tracking of codimension-1 bifurcations in the system parameters space. As an application, the frequency response of a spacecraft is studied, together with two nonlinear phenomena, namely quasiperiodic oscillations and detached resonance curves. This example illustrates how bifurcation tracking using the HB method can be employed as a promising design tool for detecting and eliminating such undesired behaviors. [less ▲]

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See detailAlain au prisme de l’ontologie phénoménologique. Relectures croisées d'Alain et de Sartre
Cormann, Grégory ULg

in Depraz, Natalie (Ed.) Alain philosophe rouennais (2015)

Parmi les grands représentants de la « génération 1905 », selon l’expression de J.-F. Sirinelli, Sartre passe pour celui qui a refusé l’enseignement d’Alain alors que des penseurs aussi différents qu’Aron ... [more ▼]

Parmi les grands représentants de la « génération 1905 », selon l’expression de J.-F. Sirinelli, Sartre passe pour celui qui a refusé l’enseignement d’Alain alors que des penseurs aussi différents qu’Aron, Canguilhem ou Hyppolite acceptaient, au moins pour un temps, l’enseignement du maître. Cette appréciation expéditive ne fait droit ni à ce qu’on sait aujourd’hui des premières tentatives philosophiques de Sartre ni au travail inlassable de relecture d’Alain que Sartre aura mené, en sous-main, tout au long de sa trajectoire intellectuelle. Dans cet article, on procédera dès lors, d’une part, au repérage de l’influence d’Alain dans une série de textes, souvent posthumes, qui passent pour des textes préparatoires aux grandes œuvres. On montrera, d’autre part, que cette influence d’Alain s’insinue jusqu’au cœur de l’ontologie phénoménologique de Sartre, dans L’être et le néant, puis dans les prolongements que Sartre y a donnés dans ses psychanalyses existentielles. Au total, on montrera que la plupart des interprétations récentes de Sartre (Coorebyter, Breeur, Gély, Giovannangeli, J. Simont, etc.), depuis une dizaine d’années, se resserrent autour de la relation largement insoupçonnée que l’ontologie phénoménologique sartrienne entretient avec la pensée d’Alain. [less ▲]

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See detailIntegrating hydrological features and 1 genetically validated occurrence data in occupancy 2 modeling of an endemic and endangered semi‐aquatic mammal species, Galemys pyrenaicus. 3 4
Charbonnel, Anaïs; Buisson, Laetitia; Biffi, Marjorie et al

in Biological Conservation (2015), Sous Presse

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See detailLa ‘Commendatio animæ’ dans les littératures romanes des origines
Valenti, Gianluca ULg

in Draelants, Isabelle; Balouzat-Loubet, Christelle (Eds.) La formule au Moyen Âge, II / Formulas in Medieval Culture, II. Actes du colloque international / Proceedings of the International Conference (2015)

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See detailVoyage(s) à travers le thymus
Geenen, Vincent ULg

Book published by Presses ULg (2015)

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See detailComparative biogeochemistry-ecosystem-human interactions on dynamic continental margins
Levin, Lisa A.; Liu, Kon-Kee; Kay-Christian, Emeis et al

in Journal of Marine Systems (2015), 141

The ocean’s continental margins face strong and rapid change, forced by a combination of direct human activity, anthropogenic CO2-induced climate change, and natural variability. Stimulated by discussions ... [more ▼]

The ocean’s continental margins face strong and rapid change, forced by a combination of direct human activity, anthropogenic CO2-induced climate change, and natural variability. Stimulated by discussions in Goa, India at the IMBER IMBIZO III, we (1) provide an overview of the drivers of biogeochemical variation and change on margins, (2) compare temporal trends in hydrographic and biogeochemical data across different margins (3) review ecosystem responses to these changes, (4) highlight the importance of margin time series for detecting and attributing change and (5) examine societal responses to changing margin biogeochemistry and ecosystems. We synthesize information over a wide range of margin settings in order to identify the commonalities and distinctions among continental margin ecosystems. Key drivers of biogeochemical variation include long-term climate cycles, CO2-induced warming, acidification, and deoxygenation, as well as sea level rise, eutrophication, hydrologic and water cycle alteration, changing land use, fishing, and species invasion. Ecosystem responses are complex and impact major margin services including primary production, fisheries production, nutrient cycling, shoreline protection, chemical buffering, and biodiversity. Despite regional differences, the societal consequences of these changes are unarguably large and mandate coherent actions to reduce, mitigate and adapt to multiple stressors on continental margins. [less ▲]

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See detailThe neural basis of temporal order processing in past and future thought
D'Argembeau, Arnaud ULg; Jeunehomme, Olivier ULg; Majerus, Steve ULg et al

in Journal of Cognitive Neuroscience (2015), 27

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See detailDilthey et l'empirisme psychologique
Dewalque, Arnaud ULg

in Camilleri, Sylvain; Fagniez, Guillaume (Eds.) Dilthey et l'histoire (2015)

Je discute ici le projet diltheyen d'une "fondation psychologique des sciences de l'esprit". Je suggère que ce projet peut être rapproché d’un certain programme épistémologique baptisé "empirisme ... [more ▼]

Je discute ici le projet diltheyen d'une "fondation psychologique des sciences de l'esprit". Je suggère que ce projet peut être rapproché d’un certain programme épistémologique baptisé "empirisme psychologique". L’hypothèse qui se trouve à la base de l’empirisme psychologique est la suivante : l’expérience interne, psychologique, est la source des concepts au moyen desquels nous pouvons penser et connaître le monde. Après avoir brièvement reconstruit le programme diltheyen en ce sens, j'examine deux objections qui ont été soulevées contre lui: l'objection néokantienne (Windelband, Rickert) et l'objection psychologique (Ebbinghaus, Stumpf). La seconde, selon moi, met en évidence une difficulté réelle du projet de Dilthey: la "connexion structurelle de la vie" dans sa totalité peut difficilement être considérée comme "donnée" dans l'expérience interne, ainsi que l'affirme Dilthey. Je soutient donc que le programme de l'empirisme psychologique peut être poursuivi à condition de le débarrasser de cette thèse problématique. [less ▲]

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See detailRecherches de lignées aromatiques d’Abies par hybridation somatique
Fauconnier, Marie-Laure ULg; Druart, Philippe

Report (2015)

L’objectif du projet de recherche est d’associer les caractéristiques de croissance d’A. nordmanniana aux propriétés aromatiques d’autres espèces d’Abies en suivant la voie de la fusion somatique. Les ... [more ▼]

L’objectif du projet de recherche est d’associer les caractéristiques de croissance d’A. nordmanniana aux propriétés aromatiques d’autres espèces d’Abies en suivant la voie de la fusion somatique. Les travaux de recherche en culture "in vitro" sont menés au laboratoire de l’Unité de Génie biologique du Département "Science du Vivant" du CRAW (section 1) tandis que les analyses relatives à la détermination des profils aromatiques sont réalisées dans le laboratoire de l'Unité chimie générale et organique de l'Université de Liège-Gembloux Agro- Bio-Tech (section 2). Les deux Unités de recherche ont poursuivi leurs activités en parfaite collaboration. La première a tenté de restituer ou garder les propriétés embryogènes au travers de protoplastes provenant de lignées embryogènes d’A. nordmanniana, d’induire l’embryogenèse somatique sur des tissus d’embryons zygotiques d’autres Abies aromatiques et de réaliser des fusions somatiques en associant des protoplastes à des cellules de têtes d’embryons. La seconde s’occupait de caractériser les composés aromatiques, de suivre leur évolution selon période de végétation, de distinguer les espèces entre elles selon le profil aromatique de leurs graines tandis qu’en parallèle, elle mettait au point les techniques d’analyses en conditions aseptiques sur des lignées embryogènes d’A. nordmanniana d’origines génétiques différentes et sur les masses issues de fusions potentielles intra ou interspécifiques avec A. balsamea. [less ▲]

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See detailCan we identify patients with high risk of osteoarthritis progression who will respond to treatment ? A focus on epidemiology and phenotype of osteoarthritis
Bruyère, Olivier ULg; Cooper, C; Arden, N et al

in Drugs & Aging (2015), 32(3), 179-187

Osteoarthritis is a syndrome affecting a variety of patient profiles. A European Society for Clinical and Economic Aspects of Osteoporosis and Osteoarthritis and the European Union Geriatric Medicine ... [more ▼]

Osteoarthritis is a syndrome affecting a variety of patient profiles. A European Society for Clinical and Economic Aspects of Osteoporosis and Osteoarthritis and the European Union Geriatric Medicine Society working meeting explored the possibility of identifying different patient profiles in osteoarthritis. The risk factors for the development of osteoarthritis include systemic factors (e.g., age, sex, obesity, genetics, race, and bone density) and local biomechanical factors (e.g., obesity, sport, joint injury, and muscle weakness); most also predict disease progression, particularly joint injury, malalignment, and synovitis/effusion. The characterization of patient profiles should help to better orientate research, facilitate trial design, and define which patients are the most likely to benefit from treatment. There are a number of profile candidates. Generalized, polyarticular osteoarthritis and local, monoarticular osteoarthritis appear to be two different profiles; the former is a feature of osteoarthritis comorbid with inflammation or the metabolic syndrome, while the latter is more typical of post-trauma osteoarthritis, especially in cases with severe malalignment. Other biomechanical factors may also define profiles, such as joint malalignment, loss of meniscal function, and ligament injury. Early- and late-stage osteoarthritis appear as separate profiles, notably in terms of treatment response. Finally, there is evidence that there are two separate profiles related to lesions in the subchondral bone, which may determine benefit from bone-active treatments. Decisions on appropriate therapy should be made considering clinical presentation, underlying pathophysiology, and stage of disease. Identification of patient profiles may lead to more personalized healthcare, with more targeted treatment for osteoarthritis. [less ▲]

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See detailExploitation optimale des lignes électriques aériennes à haute tension par évaluation en temps réel de la flèche des conducteurs et du vent agissant sur la portée
Godard, Bertrand ULg

Doctoral thesis (2015)

[Abstract] The primary concern with the electrical loading of high-voltage overhead lines is ground clearance, which depends on several factors, including constantly varying weather parameters. Sagging of ... [more ▼]

[Abstract] The primary concern with the electrical loading of high-voltage overhead lines is ground clearance, which depends on several factors, including constantly varying weather parameters. Sagging of the conductor, the main safety criteria, is due to (thermal) expansion of the line, a complex function of air temperature, solar radiation, local wind and actual current. A patented (patent US 8184015B2) method (based on a smart sensor named AmpacimonTM attached directly to an overhead line conductor) to directly measure the sag of overhead transmission line conductors is described. The main advantage of the concept is the real time direct measurement of the sag needed for the operation of the transmission or distribution system without the need for any additional and intermediate data, such as for example load, topological data, conductor tension, conductor temperature, and ambient weather conditions. The sag is determined by analyzing the conductor's vibrations, detecting the span's frequencies of vibrations. The fundamental frequencies form the exact signature of the span. Exterior conditions such as load, weather, topology, suspension movement, creep and the presence of snow and ice affect the sag, and, therefore, are automatically incorporated into the frequency of vibrations. Thus, this method is a direct sag evaluator compared to other methods that determine the sag based on conductor temperature or conductor tension measurements and inferences about other parameters (mass of conductor, span length,…). Moreover, sensor and method does not need to be calibrated, as the sag is deduced from the detected frequencies and not from signal amplitude. Completed field tests have confirmed that the method (and sensor) gives appropriate and highly accurate sag measurements (less than a 20 [cm] margin of error). The wind speed has a dramatic impact on power line ampacity as it is the main variable responsible for cooling down the conductor, and hence for the sag value. However, a single-spot measurement does not allow knowing the global effect of the wind over the whole span, in particular for low wind speeds (typically for wind speeds whose component perpendicularly to the conductor axis lower than 2-3 [m/s]) which are dramatic for ampacity (ampere capacity) determination. A patented (patent WO 2014090416 A1) direct method (based on a smart sensor named AmpacimonTM attached directly to an overhead line conductor) for measuring a perpendicular wind speed component with respect to a suspended cable span is presented. Appropriate data analysis coupling conductor's motion frequency detection, Strouhal equation and swing angle measurement gives a full picture of any wind speed. As the cable moves as a whole, the presented method provides a value which is representative of the mean perpendicular wind speed effect along the entire suspended cable span. In the past, the difficulty of predicting weather parameters and sag has resulted in conservative assumptions to ensure public safety and power-system security. If transmission system operators are to increase the use of the overhead line circuits' load-transfer capacity while ensuring the regulatory clearances above ground are maintained, they need a system that determines the available real-time load-transfer capacity, conductor sag (and perpendicular wind speed) by direct measurement, without the need to factor in unreliable parameters. The methods and system presented in this work will open new insights to power system network management in many aspects, from congestion management to preventive maintenance. [less ▲]

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See detailDescription du manuscrit
Bauden, Frédéric ULg

in Le Journal d'Antoine Galland (1646-1715). La période parisienne. Vol. IV (1714-1715) (2015)

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See detailInvolvement of the Distinctiveness Heuristic in Children's Decision Making
Geurten, Marie ULg; Willems, Sylvie ULg; Meulemans, Thierry ULg

in International Convention of Psychological Science: ICPS, Amsterdam 2015 (2015)

Over the past decades, researchers studying adult metacognition have placed a heavy emphasis on how expectations and naïve theories about memory functioning can improve memory accuracy through the ... [more ▼]

Over the past decades, researchers studying adult metacognition have placed a heavy emphasis on how expectations and naïve theories about memory functioning can improve memory accuracy through the implementation of some metacognitive rules. By contrasts, however, research on metacognition in children has only recently started to pay attention to the influence of these heuristic-based judgments on decision making. Generally, the results of these studies indicate that memory decisions are already based on some heuristics by the ages of 7-8 years. Thus far, the question of whether younger children can do the same has widely gone unexamined. The present experiment investigates whether young children are able to reduce their false recognitions rate after distinctive encoding through the implementation of a strategic metacognitive rule. Specifically, we examine the use of a retrieval strategy called the distinctiveness heuristic whereby people infer that an event has not occurred when they cannot remember expected memorial information about it. Seventy-two children, aged 4, 6, and 9 years, studied two lists of unrelated items. One of these lists was visually displayed (picture/dictinctive condition) while the other was presented auditorily (word/no-distinctive condition). After each study phase, participants completed recognition tests. Finally, they answered questions about their explicit knowledge of the distinctive-encoding effect. The results revealed that even the youngest children in our sample showed a smaller proportion of intrusions in the picture condition than in the word condition. Furthermore, the findings of the signal detection analyses are consistent with the hypothesis that the lower rate of false recognitions after picture encoding results from the implementation of a conservative response criterion based on the participants’ metacognitive expectations (distinctiveness heuristic). Moreover, the absence of correlation between children’s explicit knowledge of the distinctiveness rule and their effective use of this metacognitive heuristic seems to indicate that its involvement in memory decisions could be mediated by implicit mechanisms. [less ▲]

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See detailLe code de droit économique: principales innovations
Thirion, Nicolas ULg

Book published by Larcier (2015)

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See detailIntroduction: Deux années de la vie d'Antoine Galland (1712-1713)
Bauden, Frédéric ULg

in Le Journal d'Antoine Galland (1646-1715). La période parisienne. Vol. III (1712-1713) (2015)

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See detailDescription du manuscrit
Bauden, Frédéric ULg

in Le Journal d'Antoine Galland (1646-1715). La période parisienne. Vol. III (1712-1713) (2015)

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See detailAtmospheric Pressure Plasma as an Activation Step for Improving Protein Adsorption on Hydroxyapatite Powder
Ozhukil Kollath, Vinayaraj ULg; Put, Sofie; Mullens, Steven et al

in Plasma Processes and Polymers (2015)

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