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See detailLa gestion des ressources publiques : acteurs, enjeux et processus
Piron, Damien ULg; Weerts, Audrey ULg; Wintgens, Sophie ULg

in Pyramides : Revue du Laboratoire d'Etudes et de Recherches en Administration Publique (2017), 28

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See detailVous êtes formidables
RADERMECKER, Régis ULg

in Revue de l'Association Belge du Diabète (2017), 60

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See detailLe concept de duration : une présentation heuristique
Bair, Jacques ULg

Learning material (2017)

La duration est fondamentale en mathématiques financières. Nous la présentons de deux manières complémentaires qui sont qualifiées de classique et d’heuristique. La seconde méthode nous paraît originale et ... [more ▼]

La duration est fondamentale en mathématiques financières. Nous la présentons de deux manières complémentaires qui sont qualifiées de classique et d’heuristique. La seconde méthode nous paraît originale et bien adaptée pour amener les étudiants à effectuer un travail de recherche sur un problème concret et pour appliquer de nombreux concepts classiquement enseignés dans les programmes de mathématiques. [less ▲]

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See detailInfluence of the balls kinematics of axially loaded ball bearings on Coulombic frictional dissipations
Bozet, Jean-Luc ULg; Servais, Christophe ULg

in Journal of Tribology (2017), 139(1),

Ball bearings have been used for a long time. Nevertheless, the description of their behavior remains incomplete in spite of the large number of surveys dedicated to ball bearings. Particularly, the exact ... [more ▼]

Ball bearings have been used for a long time. Nevertheless, the description of their behavior remains incomplete in spite of the large number of surveys dedicated to ball bearings. Particularly, the exact balls kinematics has still to be addressed in depth. This paper proposes a new way to calculate the balls kinematics by using a simplified quasi-static approach for dry lubricated and axially loaded ball bearings. This method does not use the classical restrictive race control assumptions. More specifically, the role played by the balls kinematics is emphasized by means of the power dissipated within contacts between balls and races. The need for a correct evaluation of the balls behavior is illustrated by using an example, viz. a ball bearing of cryogenic engine turbopump. Indeed, the dissipated power is one of the main concerns in this particular case. [less ▲]

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See detailHabitat selection and reproduction of newts in networks of fish and fishless aquatic patches
Winandy, Laurane ULg; Legrand, Pauline ULg; Denoël, Mathieu ULg

in Animal Behaviour (2017), 123

The spatial distribution of organisms in patchy environments can be determined by the relationship between habitat quality and animal behaviour. In species with complex life cycles, such as pond-breeding ... [more ▼]

The spatial distribution of organisms in patchy environments can be determined by the relationship between habitat quality and animal behaviour. In species with complex life cycles, such as pond-breeding amphibians, the selection of a suitable wetland is crucial. While the traditional view of amphibian ecology suggests strong site fidelity and low vagility, more recent research highlights mechanisms involving active site choice through avoidance behaviour and bet-hedging strategies in heterogeneous environments. The introduction of fish to the aquatic environment is one of the factors that may alter site selection and lead to local dispersal. In this context, we investigated the habitat choice of Alpine newts, Ichthyosaura alpestris, in networks of fish (Carassius auratus) and fishless aquatic patches. Using a laboratory design consisting of aquaria divided into two water tanks connected by a terrestrial platform, we assessed newt distribution and movement between patches. During the breeding period, we compared the reproductive success of individuals in two types of networks. We found that newts escaped fish by rapidly changing aquatic patches and then aggregating in safe aquatic patches that were free of fish. In the fish network, newts maintained reproduction, but the high local abundance resulted in decreased sexual activity and egg production and increased use of the terrestrial habitat. However, in the fishless network, newts moved between aquatic patches several times, exhibited more courtship behaviour and laid more eggs than they did in the fish networks. Our results showed both adaptive habitat switching due to environmental risks in the fish network and habitat supplementation (i.e. use of alternative resources) in the fishless network. Such studies on movement behaviour and habitat selection have conservation implications in showing that the persistence of native species in invaded networks depends on the rescue effect, with immigration to fish-free habitats potentially preventing local extinction. [less ▲]

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See detailL’accès des filles à l’enseignement supérieur au Burkina Faso : choix parentaux, parcours d’étudiantes et défis
Wouango, Joséphine ULg

in International Review of Education (2017), 63(2),

Qu'est-ce qui motive les parents des milieux moins aisés à investir dans une scolarisation prolongée de leurs filles ? Qu'est-ce qui amène les filles issues de ces milieux à se maintenir dans le système ... [more ▼]

Qu'est-ce qui motive les parents des milieux moins aisés à investir dans une scolarisation prolongée de leurs filles ? Qu'est-ce qui amène les filles issues de ces milieux à se maintenir dans le système scolaire jusqu'à l'université ? De nombreuses recherches sur le système éducatif burkinabé montrent qu'il existe encore des disparités entre filles et garçons à tous les niveaux, avec une aggravation de l'écart à mesure que le niveau d'études augmente. Dans ces conditions, la perspective pour des filles issues de familles moins aisées de poursuivre des études supérieures est moins certaine. Pourtant, on remarque une relative présence de filles issues de ces milieux à l'université de Ouagadougou. À partir d'une enquête qualitative auprès d'étudiantes et de leurs parents, cet article met en exergue les logiques sociales qui expliquent le parcours scolaire particulier de ces filles. Le niveau de scolarisation des aînés, la place de la fille dans la fratrie ou le souci d'équité sont des facteurs à l'origine du choix de certains parents de scolariser leurs filles. Les parents se réfèrent à plusieurs formes de justification en faveur des études universitaires des filles, parmi lesquelles la logique de fidélité des filles dans le retour de l’aide revient à de multiples reprises. Quant aux étudiantes, elles évoquent des motivations diverses pour expliquer leur parcours scolaire et universitaire, souvent émaillé de difficultés, notamment la volonté d’aider leurs parents. L’article montre en outre l’importance du soutien familial dans l’entrée des filles à l’école et à l’université, ainsi que dans la poursuite et la réussite de leurs études. [less ▲]

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See detailImpact of the cumulated proteins and energy deficits on ICU patient’s outcome
PAGE, Isaline ULg; Warnier, Stéphanie; NYS, Monique ULg et al

in Annals of Intensive Care (2017, January), 7(Suppl1), 200

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See detailEmbarquement pour Mars
Stiepen, Arnaud ULg

Conference given outside the academic context (2017)

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See detailBioclimatism in Architecture : an evolutionary perspective
Nguyen, Anh Tuan; Reiter, Sigrid ULg

in International Journal of Design and Nature and Ecodynamics (2017), 12(1), 16-29

Fundamentals of vernacular architecture have been used in bioclimatic architecture which has gradually become the inspiration of various movements in contemporary architecture. The study points out that ... [more ▼]

Fundamentals of vernacular architecture have been used in bioclimatic architecture which has gradually become the inspiration of various movements in contemporary architecture. The study points out that the development of bioclimatism in architecture has followed the pattern of a natural evolutionary process in which “natural selection” is likely motivated by several factors, including resources and environment problems, and driven by different mechanisms including novel building design concepts and methods, new standards and codes, discoveries in building science and construction costs. This study is an effort aimed to clarify the evolution process of the bioclimatic approach in architecture over time and its influences on contemporary movements in architecture. The paper shows also that the evolutionary theory generated new scientific tools able to improve building design thanks to simulation-based optimization methods applied to building performances. Finally, this study investigates new motivations in the era of climate change whose effects are expected to introduce more challenges as well as more trends towards a sustainable built environment through the new concept of Eco-adaptive architecture. [less ▲]

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See detailInvited Commentary
Lancellotti, Patrizio ULg; Nchimi Longang, Alain ULg

in Annals of Thoracic Surgery (2017), 103(1), 81-82

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See detailEuropean consensus-based (S2k) Guideline on the Management of Herpes Zoster - guided by the European Dermatology Forum (EDF) in cooperation with the European Academy of Dermatology and Venereology (EADV), Part 1: Diagnosis
WERNER R. N.; NIKKELS, Arjen ULg; MARINOVIC B. et al

in Journal of the European Academy of Dermatology & Venereology (2017), 31

Herpes zoster (HZ, shingles) is a frequent medical condition which may severely impact the quality of life of affected patients. Different therapeutic approaches to treat acute HZ are available. The aim ... [more ▼]

Herpes zoster (HZ, shingles) is a frequent medical condition which may severely impact the quality of life of affected patients. Different therapeutic approaches to treat acute HZ are available. The aim of this European project was the elaboration of a consensus-based guideline on the management of patients who present with HZ, considering different patient populations and different localizations. This interdisciplinary guideline aims at an improvement of the outcomes of the acute HZ management concerning disease duration, acute pain and quality of life of the affected patients and at a reduction of the incidence of postherpetic neuralgia and other complications. The guideline development followed a structured and predefined process, considering the quality criteria for guidelines development as suggested by the AGREE II instrument. The steering group was responsible for the planning and the organization of the guideline development process (Division of Evidence based Medicine, dEBM). The expert panel was nominated by virtue of clinical expertise and/or scientific experience and included experts from the fields of dermatology, virology/infectiology, ophthalmology, otolaryngology, neurology and anaesthesiology. Recommendations for clinical practice were formally consented during the consensus conference, explicitly considering different relevant aspects. The guideline was approved by the commissioning societies after an extensive internal and external review process. In this first part of the guideline, diagnostic means have been evaluated. The expert panel formally consented recommendations for the management of patients with (suspected) HZ, referring to the assessment of HZ patients, considering various specific clinical situations. Users of the guideline must carefully check whether the recommendations are appropriate for the context of intended application. In the setting of an international guideline, it is generally important to consider different national approaches and legal circumstances with regard to the regulatory approval, availability and reimbursement of diagnostic and therapeutic interventions. [less ▲]

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See detailEuropean consensus-based (S2k) Guideline on the Management of Herpes Zoster - guided by the European Dermatology Forum (EDF) in cooperation with the European Academy of Dermatology and Venereology (EADV), Part 2: Treatment
WERNER R.N.; NIKKELS, Arjen ULg; MARINOVIC B. et al

in Journal of the European Academy of Dermatology & Venereology (2017)

Herpes zoster (HZ, shingles) is a frequent medical condition which may severely impact the quality of life of affected patients. Different therapeutic approaches to treat acute HZ are available. The aim ... [more ▼]

Herpes zoster (HZ, shingles) is a frequent medical condition which may severely impact the quality of life of affected patients. Different therapeutic approaches to treat acute HZ are available. The aim of this European project was the elaboration of a consensus-based guideline on the management of patients who present with HZ, considering different patient populations and different localizations. This interdisciplinary guideline aims at an improvement of the outcomes of the acute HZ management concerning disease duration, acute pain and quality of life of the affected patients and at a reduction in the incidence of postherpetic neuralgia (PHN) and other complications. The guideline development followed a structured and pre-defined process, considering the quality criteria for guidelines development as suggested by the AGREE II instrument. The steering group was responsible for the planning and the organization of the guideline development process (Division of Evidence-Based Medicine, dEBM). The expert panel was nominated by virtue of clinical expertise and/or scientific experience and included experts from the fields of dermatology, virology/infectiology, ophthalmology, otolaryngology, neurology and anaesthesiology. Recommendations for clinical practice were formally consented during the consensus conference, explicitly considering different relevant aspects. The guideline was approved by the commissioning societies after an extensive internal and external review process. In this second part of the guideline, therapeutic interventions have been evaluated. The expert panel formally consented recommendations for the treatment of patients with HZ (antiviral medication, pain management, local therapy), considering various clinical situations. Users of the guideline must carefully check whether the recommendations are appropriate for the context of intended application. In the setting of an international guideline, it is generally important to consider different national approaches and legal circumstances with regard to the regulatory approval, availability and reimbursement of diagnostic and therapeutic interventions. [less ▲]

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See detailRegards croisés sur deux dispositifs de formation technopédagogique, leur outillage conceptuel et l’évaluation de leurs bénéfices
Loisy, Catherine; Van de Poël, Jean-François ULg; Verpoorten, Dominique ULg

in Detroz, Pascal; Crahay, Marcel; Fagnant, Annick (Eds.) L'évaluation à la lumière des contextes et des disciplines (2017)

Ce chapitre décrit deux projets de formation et d’accompagnement techno-pédagogique mobilisant diversement le modèle TPaCK. Le premier projet (DevSup) y recourt pour soutenir la réflexivité des acteurs ... [more ▼]

Ce chapitre décrit deux projets de formation et d’accompagnement techno-pédagogique mobilisant diversement le modèle TPaCK. Le premier projet (DevSup) y recourt pour soutenir la réflexivité des acteurs sur leurs pratiques pédagogiques avec le numérique, en s’appuyant sur une activité d’auto-confrontation. Cette approche qualitative est réalisée avec un nombre restreint de participants. Le second projet (IFRES-eCampus) dispense des formations techno-pédagogiques courtes à une population importante d’enseignants du supérieur. Le TPaCK est ici utilisé dans une fonction structurante portant sur la définition et le sens de l’offre de formation. Le chapitre, qui s’apparente à une étude de cas, établit trois convergences entre ces dispositifs : a) ils adoptent un modèle de référence identique et récent en soutien conceptuel de leur action de formation, b) ils entendent inscrire cette dernière dans une perspective développementale, c) ils partagent un souci commun d’en évaluer les effets sur les participants. A l’heure où le recours aux technologies se profile comme une composante importante de l’activité professorale dans le supérieur, le présent chapitre contribue aux discussions sur le rôle d’un modèle théorique comme vecteur d’intelligibilité pour la réflexion professionnelle des accompagnateurs techno-pédagogiques et des enseignants avec qui ils travaillent. [less ▲]

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See detailLa cigarette électronique : état des connaissances à propos des aspects toxicologiques
DEVILLE, Marine ULg; CHARLIER, Corinne ULg

in Revue Médicale de Liège (2017), 72(1), 20-24

La cigarette électronique, aussi appelée e-cigarette, est présentée comme une alternative au tabagisme qui serait moins nocive pour la santé. Son fonctionnement repose sur la conversion d’un liquide en ... [more ▼]

La cigarette électronique, aussi appelée e-cigarette, est présentée comme une alternative au tabagisme qui serait moins nocive pour la santé. Son fonctionnement repose sur la conversion d’un liquide en vapeur, sous l’action de la chaleur générée par un filament présent dans un atomiseur. Le liquide est majoritairement composé de propylène glycol et/ou de glycérine, utilisé(s) pour produire l’effet de fumée, auxquels s’ajoutent des arômes et, éventuellement, de la nicotine. A l’exception de cette dernière, potentiellement létale lorsqu’elle est ingérée à haute dose, ces constituants sont généralement reconnus comme sans danger. Cependant, les conséquences d’une inhalation chronique de propylène glycol sont méconnues. Avantageusement, les composés qui rendent la cigarette traditionnelle particulièrement nuisible – nitrosamines, formaldéhyde, métaux, monoxyde de carbone,… - sont soit absents, soit présents en faible quantité dans la vapeur d’une e-cigarette, sans comparaison avec les taux mesurés dans la fumée d’une cigarette conventionnelle. Il en résulte un profil de toxicité rassurant pour la e-cigarette, bien que son efficacité dans le sevrage tabagique reste à démontrer. [less ▲]

See detailMamlūk Cairo: A Crossroad for Embassies
Bauden, Frédéric ULg; Dekkiche, Malika

Book published by Brill Academic Publishers (2017)

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See detailHow does forest cover impact water flows and ecosystem services? Insights from real-life catchments in Wallonia (Belgium)
Brogna, Delphine; Vincke, Caroline; Brostaux, Yves ULg et al

in Ecological Indicators (2017), 72

While planet boundaries are being crossed and ecosystems degraded, the Ecosystem Service (ES) conceptrepresents a potential decision-making tool for improved natural resources management. The main aimof ... [more ▼]

While planet boundaries are being crossed and ecosystems degraded, the Ecosystem Service (ES) conceptrepresents a potential decision-making tool for improved natural resources management. The main aimof this paper is to assess the impact of forest cover on water related ES in Wallonia (Belgium) in termsof quantity and timing. We developed an approach based on easily accessible data, monitored in severalcountries and using straightforward statistical methods. This led us to study ES at “real-life” catchmentsscale: 22 catchments – from 30 to 250 km2– with mixed land covers were studied. We approached thewater supply and flood protection services through 5 indicators extracted from 10 hydrological years(2005–2014) discharge data series. These were computed annually and seasonally (vegetation periodfrom March to September and “non-vegetation” period the rest of the year). The water supply wasassessed through the specific volume Vs, the baseflow index BFI and the specific discharge exceeded95% of the time Q95s whereas the flood protection service was approached through the specific dis-charge exceeded 5% of the time Q05s and the flashiness index FI. Our study gives two main insights. First,statistical analyses show that forest cover negatively impact water supply when studying annual and“non-vegetation” period flows in general (Vs) but positively when studying low flows (Q95s). Regardingflood protection a slightly negative impact of forest cover on high flows (Q05s) was highlighted in the“non-vegetation” period. Results also show a negative impact of forests annually and in the vegetationperiod on the flashy behaviour of the catchment thus a positive impact on the flood protection ES. The“year” effect is overall highly significant testifying the importance of climatic factors. Rainfall is oftensignificant and can be considered as a main driver of these ES. Secondly, analyzing the quality of themodels produced and the results overall we assume that other variables characterizing the catchmentssuch as topography or soil types do play a significant role in the delivery of these ES. This questions theuse of land cover proxies in assessing and mapping of hydrological ES at a complex landscape scale. Wethus recommend further research to keep improving land cover proxies if they are used. [less ▲]

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See detailA Reconstructed Qarā Qoyūnlū Letter
Bauden, Frédéric ULg

in Bauden, Frédéric; Dekkiche, Malika (Eds.) Mamlūk Cairo: A Crossroad for Embassies (2017)

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See detailLa bibliothèque d'Antoine Galland
Bauden, Frédéric ULg

in Bauden, Frédéric; Waller, Richard (Eds.) Antoine Galland (1646-1715) et son Journal. Actes du colloque international organisé à l’Université de Liège (16-18 janvier 2015) à l’occasion du tricentenaire de sa mort (2017)

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