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See detailPromoting "health literacy friendly" healthcare institutions
Henrard, Gilles ULiege

Poster (2017, September)

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See detailA two-step methodology for human pose estimation increasing the accuracy and reducing the amount of learning samples dramatically
Azrour, Samir ULiege; Pierard, Sébastien ULiege; Geurts, Pierre ULiege et al

in Advanced Concepts for Intelligent Vision Systems (2017, September)

In this paper, we present a two-step methodology to improve existing human pose estimation methods from a single depth image. Instead of learning the direct mapping from the depth image to the 3D pose, we ... [more ▼]

In this paper, we present a two-step methodology to improve existing human pose estimation methods from a single depth image. Instead of learning the direct mapping from the depth image to the 3D pose, we first estimate the orientation of the standing person seen by the camera and then use this information to dynamically select a pose estimation model suited for this particular orientation. We evaluated our method on a public dataset of realistic depth images with precise ground truth joints location. Our experiments show that our method decreases the error of a state-of-the-art pose estimation method by 30%, or reduces the size of the needed learning set by a factor larger than 10. [less ▲]

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See detailMethis (7): Agir dans la ville.
Hamers, Jérémy ULiege; Darcis, Damien ULiege

Book published by Editions de l’Université de Liège (2017)

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See detailSMART RIVERS 2017
Rigo, Philippe ULiege; MUSKATIROVIC, JASNA; JAIMURZINA, AZHAR et al

in SMART RIVERS 2017, Pittsburgh (PIANC) (2017, September)

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See detailModelle zur Untersuchung von Massenbewegungen und Hangstabilität in seismischen Regionen
Mreyen, Anne-Sophie ULiege; Anja, Dufresne; Havenith, Hans-Balder ULiege

in Fachsektionstage Geotechnik - Interdisziplinäres Forum (2017, September)

Zwei von Erdrutschen betroffene Regionen in NW- und Mitteleuropa werden mittels Hangstabilitätsanalysen in Form von 3D-Geo-Modellen und numerischer 2D-Modellierung untersucht: (1) die Hockai-Störungszone ... [more ▼]

Zwei von Erdrutschen betroffene Regionen in NW- und Mitteleuropa werden mittels Hangstabilitätsanalysen in Form von 3D-Geo-Modellen und numerischer 2D-Modellierung untersucht: (1) die Hockai-Störungszone (HFZ – Hockai Fault Zone) in Ostbelgien und (2) die seismische Region Vrancea in den rumänischen Karpaten. Die Untersuchungsgebiete unterscheiden sich hinsichtlich ihrer klimatischen und seismo-tektonischen Bedingungen, sind jedoch beide von tiefsitzenden Hangbewegungen entlang aktiver bzw. inaktiver Störungszonen betroffen. Obwohl es zurzeit keinerlei eindeutige Belege massiver co-seismischer Erdrutsche in NW Europa gibt, ist die seismisch aktive HFZ in Belgien (bekannt durch das M~6-6.3 Verviers Ereignis in 1692) durch größere Massenbewegungen mit wahrscheinlichem seismischen Ursprung gekennzeichnet. Die Region Vrancea in Rumänien dagegen ist von kleineren (< 1 Mio. m³) bekannten seismischen Massenbewegungen geprägt (ausgelöst durch Erdbeben in 1940 und 1977). In solchen Regionen müssen dynamische Stabilitätsanalysen potentielles Bodenversagen durch Erdbeben berücksichtigen. Um die Massenbewegungen beider Regionen aufzuschließen, wurden verschiedene Methoden angewandt. Zu den Erkundungsmethoden zählen geotechnische, geologische und geomorphologische Untersuchungen, wie auch geophysikalische Methoden: ERT (electrical resistivity tomography), mikroseismische Bodenunruhe-Messungen (H/V-Methode), sowie SRT (seismic refraction tomography) samt Analyse seismischer Oberflächenwellen. Insbesondere die H/V-Methode ist eine zunehmend gebräuchliche Methode zur Erkundung von Hangrutschungen (1D-Abschätzung von Lockersedimentschichten, d.h. in diesem Fall von gestörten Bodenschichten). Geomechanische Eigenschaften des Hangmaterials wurden mithilfe von kleinen geotechnischen Studien (Erkundungsbohrungen, Schmidt Hammer, Strukturanalysen) und seismischen Parametern ermittelt. 3D-Geo-Modelle ermöglichen die Integration der gemessenen Daten durch Datenfusion und geostatistische Techniken. Dabei wird die Modelloberfläche anhand hochauflösender Fernerkundungsdaten (1 m LiDAR – Light Detection and Ranging) abgebildet, der Untergrund des Untersuchungsgebiets hingegen durch die Modellierung geologischer Trennflächen und Volumina. Die Geo-Modelle dienen als Basis zur Übertragung der ermittelten Daten in 2D numerische Modelle. Eine dynamische back-analysis der Untersuchungsgebiete ermöglicht die numerische Berechnung seismischer Auswirkungen auf die rutschungsanfälligen Hänge. [less ▲]

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See detailLes dispositifs de test et de filtre des étudiants dans l’enseignement supérieur
Detroz, Pascal ULiege; Dehon, Catherine; Romainville, Marc et al

Report (2017)

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See detailBrentano, la théorie des catégories et la définition de la substance
Boccaccini, Federico ULiege

in Etudes Philosophiques (2017)

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See detailComposantes météorologiques de la base de données océanographique RACE de STARESO (Baie de Calvi – Corse)
Binard, Marc ULiege

in Bulletin de la Société Géographique de Liège (2017), 68

Since the creation of the Calvi oceanographic station (STARESO) in the early 1970s, a great deal of data has been acquired by ULg researchers. In 2005 it was decided to create the RACE database in order ... [more ▼]

Since the creation of the Calvi oceanographic station (STARESO) in the early 1970s, a great deal of data has been acquired by ULg researchers. In 2005 it was decided to create the RACE database in order not only to preserve the old and current measures but also to promote their dissemination and exploitation. In this article, particular attention is paid to the acquisition and exploitation of the meteorological data of the RACE database and also the CalviOnLine database updated every 20 minutes by the on line reception of the new climatological data from a meteorological station located close to the oceanographic station. [less ▲]

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See detailVariability in elective day-surgery rates between Belgian hospitals - Analyses of administrative data explained by surgical experts
Leroy, Roos; Camberlin, Cécile; Lefevre, Mélanie ULiege et al

in International Journal of Surgery (London, England) (2017), 45

Background In the last decades, day surgery has steadily and significantly grown in many countries, yet the increase has been uneven. There are large variations in day-surgery activity between countries ... [more ▼]

Background In the last decades, day surgery has steadily and significantly grown in many countries, yet the increase has been uneven. There are large variations in day-surgery activity between countries, but also within countries between hospitals and surgeons. This paper explores the variability in day-care activity for elective surgical procedures between Belgian hospitals. Materials and methods The administrative hospital data of all patients formally admitted in a Belgian hospital for inpatient or day-surgery care between 2011 and 2013 were analysed and summarized in graphs. During 11 expert meetings with ad-hoc surgical expert groups the variability in day-surgery share between hospitals was discussed in depth. Results The variability in day-care share between Belgian hospitals is considerable. For 37 out of 486 elective surgical procedures, the variability ranged between 0 and 100%. High national day-care rates do not preclude room for improvement for certain hospitals as for the majority of these procedures there are “low performers”. According to the consulted clinical experts, the high variability in day-care share may for the greater part be explained by medical team related factors, customs and traditions, the lack of clinical guidelines, financial factors, organisational factors and patient related factors. Conclusion If a further expansion of day surgery is envisaged in Belgium the factors that contribute to the current variability in day-surgery rates between hospitals should be addressed. In addition, a feedback system in which hospitals and health care providers have the figures on their percentage of procedures carried out in day surgery compared to other hospitals and care providers (benchmarking) and the monitoring of a number of quality indicators (e.g. unplanned readmission, unplanned inpatient stay, emergency department visit) should be installed. [less ▲]

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See detailCompte-rendu de l'ouvrage de Gilbert Gagné : The Trade and Culture Debate Evidence from US Trade Agreements
Vlassis, Antonios ULiege

in Revue Québecoise de Droit International (2017)

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See detailTraumatologie des sports olympiques de ballon en salle. Partie 2 : le handball
Kaux, Jean-François ULiege; Roberjot, Mathieu; DELVAUX, François ULiege et al

in Journal de Traumatologie du Sport (2017)

Frequent often-rough contact between players explains why handball has one of the highest injury rates (mainly contusion) recorded at the LondonOlympic Games. Ankle injuries predominated. Head injuries ... [more ▼]

Frequent often-rough contact between players explains why handball has one of the highest injury rates (mainly contusion) recorded at the LondonOlympic Games. Ankle injuries predominated. Head injuries (commotion), shoulder injuries (dislocation and instability), and knee injuries (anteriorcruciate ligament tears) were also common. Wingmen are in constant activity both as attackers and defenders, making them the players with thehighest risk of injury. [less ▲]

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See detailDefeatist performance beliefs in a sample of individuals with persistent negative symptoms
Thonon, Bénédicte ULiege; Li, Xueying; Velligan, Dawn

Poster (2017, September)

Objective Negative symptoms of schizophrenia, in particular motivational deficits, have showed to be linked to dysfunctional attitudes, such as defeatist performance beliefs. This relationship has been ... [more ▼]

Objective Negative symptoms of schizophrenia, in particular motivational deficits, have showed to be linked to dysfunctional attitudes, such as defeatist performance beliefs. This relationship has been found in various types of samples but has not been investigated in samples of individuals presenting persistent negative symptoms (PNS). The present study aimed to assess the relationship between defeatist performance beliefs and negative symptoms in a sample of individuals diagnosed with schizophrenia and PNS. Another objective was to evaluate the link between change in defeatist beliefs and change in negative symptoms, before and after psychosocial intervention. Methods Fifty-one participants diagnosed with schizophrenia and PNS followed 9 months of Motivation and Engagement Training. They were assessed before and after the intervention using the Negative Symptom Assessment (NSA), the Brief Negative Symptom Scale (BNSS), the Clinical Assessment Interview for Negative Symptoms (CAINS), and de the Defeatist Performance Beliefs scale. Results At baseline, defeatist performance beliefs were not significantly associated with negative symptoms, except with the motivation factor of the BNSS, but only at the trend level. However, change in defeatist beliefs was moderately correlated with change in motivation, as measured with the BNSS, but not with the other measures. Conclusion These results underlie the necessity of broadening the targets of psychosocial interventions to factors related to negative symptoms other than dysfunctional attitudes. [less ▲]

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See detailSmallest salable patent practicing unit (SSPPU) and component licensing: Why $1 is not $1?
Gautier, Axel ULiege

Conference (2017, September)

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See detailLocals in the Wasteland: The Non-Intended Side Effects of (In)Sensible Local Participatory Technology Development.
Parotte, Céline ULiege

Conference (2017, September)

Implementing high-level radioactive wastes programs on a territory remain a sensitive step for nuclear waste management organizations. At this stage, the preferred solution of radioactive wastes programs ... [more ▼]

Implementing high-level radioactive wastes programs on a territory remain a sensitive step for nuclear waste management organizations. At this stage, the preferred solution of radioactive wastes programs (geological disposal) and their technological developments become highly visible and this is why the new instruments and strategies such as participatory technology development (PDT) have been adopted to tackle the territorial development of geological disposal technology. Considering the coproduction between territory and program (Jasanoff 2004), this presentation focuses on two siting processes of radioactive wastes programs, in France and in Canada to analyze the influence of in(sensible) local participatory technology development strategy and the influence of invited critics (Wynne 2007) on the industrial project. Our results show that frameworks of the participatory technology development have been designed very differently (with or without publics). Consequently, two undesirable, mostly non-intended side effects of information local committees (non) integration have appeared. In France, a closed PDT transformed invited critics as non-invited one. In Canada, a weak engagement of publics has occurred with an opened PDT. In both case, new socio-technical adjustments have occurred in those programs. [less ▲]

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See detailUn théâtre d'ondes
Neelsen, Sarah ULiege

Article for general public (2017)

Texte de présentation de la pièce "Kein Licht" d'Elfriede Jelinek, Prix Nobel de littérature en 2004, pour le programme de l'opéra du même nom, créé par le compositeur Philippe Manoury et le metteur en ... [more ▼]

Texte de présentation de la pièce "Kein Licht" d'Elfriede Jelinek, Prix Nobel de littérature en 2004, pour le programme de l'opéra du même nom, créé par le compositeur Philippe Manoury et le metteur en scène Nicolas Stemann à l'Opéra National du Rhin. [less ▲]

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See detailA multifractal formalism for non-concave and non-increasing spectra: the leaders profile method
Esser, Céline ULiege; Kleyntssens, Thomas ULiege; Nicolay, Samuel ULiege

in Applied & Computational Harmonic Analysis (2017), 43(2), 269-291

We present an implementation of a multifractal formalism based on the types of histogram of wavelet leaders. This method yields non-concave spectra and is not limited to their increasing part. We show ... [more ▼]

We present an implementation of a multifractal formalism based on the types of histogram of wavelet leaders. This method yields non-concave spectra and is not limited to their increasing part. We show both from the theoretical and from the applied points of view that this approach is more e cient than the wavelet-based multifractal formalisms previously introduced. [less ▲]

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See detailSynthesis, characterization, and durability study of Pt-Co hollow nanoparticles deposited on carbon xerogel electrocatalysts for Proton Exchange Membrane Fuel Cells (PEMFC)
Zubiaur, Anthony ULiege; Asset, Tristan ULiege; Olu, Pierre-Yves et al

Poster (2017, September)

Proton exchange membrane fuel cell (PEMFC) catalysts are generally made of carbon black (CB)supported platinum-based nanoparticles. However, the properties of CBs, as described by RodríguezReinoso [1 ... [more ▼]

Proton exchange membrane fuel cell (PEMFC) catalysts are generally made of carbon black (CB)supported platinum-based nanoparticles. However, the properties of CBs, as described by RodríguezReinoso [1], are not optimal for electrocatalysis. A possible solution to the drawbacks of CBs is the use of synthetic nanostructured materials with a controllable and reproducible texture and with a pure, known and constant chemical composition; carbon xerogels (CX) exhibit such properties [2]. Recently, various highly dispersed CX-supported Pt nanoparticles catalysts (Pt/CX) have been synthesized via several methods, such as the strong electrostatic adsorption (SEA) [3] or the charge-enhanced dry impregnation (CEDI) [4]. However, the decrease of the Pt mass contained in the PEMFC electrodes, in particular at the cathode where the oxygen reduction reaction (ORR) is processed, remains a major challenge. Improving the ORR mass activity is currently best achieved by alloying Pt with 3d-transition metal atoms such as cobalt (Co). These alloys perform better than the ORR because the substitution of some Pt atoms by 3d-metal atoms with smaller radius leads to a modified Pt electronic structure [5]. The synthesis and durability of Pt-Co hollow particles/CX (Fig. 1) is currently being studied in our groups. The results indicate that the specific and mass activity of the bimetallic hollow particles dispersed on CX is ca. 10 times higher than that of pure Pt/CB. The first durability results show good stability of the hollow particles structure. Performances and accelerated stress tests (ASTs) in PEMFCs were finally performed. [less ▲]

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See detailWater chemical evolution in Underground Pumped Storage Hydropower plants and induced consequences
Pujades, Estanislao ULiege; Orban, Philippe ULiege; Jurado Elices, Anna ULiege et al

in Energy Procedia (2017), 125

Underground Pumped Storage Hydropower (UPSH) is an alternative to manage the electricity production in flat regions. UPSH plants consist of two reservoirs of which at least one is underground. For this ... [more ▼]

Underground Pumped Storage Hydropower (UPSH) is an alternative to manage the electricity production in flat regions. UPSH plants consist of two reservoirs of which at least one is underground. For this last reservoir, abandoned mines could be considered. UPSH related activities may induce hydrochemical variations, such as the increase of the oxygen (O2) partial pressure (pO2), which may entail negative consequences in terms of environment and efficiency, especially in coal mined areas where the presence of sulfide minerals is common. This work assesses the main expected environmental impacts that UPSH using abandoned coal mines may induce. [less ▲]

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See detailInfluence of rock fragments on hydraulic properties of Ultisols in Ratchaburi Province, Thailand
Khetdan, Channarong; Chittamart, Natthapol; Tawornpruek, Saowanuch et al

in Geoderma Regional (2017), 10

In Thailand, stony soils are mainly located in hillside areas. Even though they have physical limitations for agricultural use and they are exposed to a risk for soil erosion, they continue to be used for ... [more ▼]

In Thailand, stony soils are mainly located in hillside areas. Even though they have physical limitations for agricultural use and they are exposed to a risk for soil erosion, they continue to be used for crop production. A good understanding of the hydraulic characteristics of soils containing an important fraction of rock fragments is crucial for soil and water management in these areas. The objective of this study was to investigate the influence of different rock fragment contents on effective hydraulic properties of skeletal soil with a clay content lower than 35% using measurements of the water retention curve and the hydraulic conductivity. A tension infiltrometer was used to determine the field hydraulic conductivity at four pressure heads (h) of 0, − 30, − 60 and − 120 mm. Soil water retention was determined on a pressure plate between − 33 and − 1500 kPa. Finally, the Hydrus-1D was used to predict soil moisture dynamics using the obtained effective hydraulic parameters. The results show a decreasing water retention capacity with increasing rock fragment content. The saturated hydraulic conductivity decreased with increasing stone contents from 0 to 20%, but then increased for increasing stone content. Contradicting behavior can be observed using field and lab measurements, clearly exposing the need for a better understanding of the functioning of stony soils. [less ▲]

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