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See detailReflexive Loops on Scaling issues in Landscape Quality Assessment
Schmitz, Serge ULg; Vanderheyden, Vincent ULg

in Land Use Policy (2016), 53

Detailed reference viewed: 50 (13 ULg)
See detailChitosan-based nanofibers mats for tissue engineering
Aqil, Abdelhafid ULg; Croisier, Florence ULg; Colige, Alain ULg et al

Conference (2016, May)

Polymer hydrogels resemble the natural living tissue due to their high water content and soft consistency. They find many applications in the design and production of contact and intraocular lenses ... [more ▼]

Polymer hydrogels resemble the natural living tissue due to their high water content and soft consistency. They find many applications in the design and production of contact and intraocular lenses, biosensors membranes, matrices for repairing and regenerating a wide diversity of tissues and organs. Polysaccharides such as chitosan and hyaluronic acid based hydrogels have shown a great potential for biomedical and pharmaceutical applications, on account of their remarkable compatibility with physiological medium. Besides, it is degraded in a physiological environment into non-toxic products, which make them outstanding candidates for short- to medium-term applications, especially for tissue engineering. In this respect, the preparation of nanometric fibers mats based on this polysaccharide are highly interesting as such structure mimics the one of skin extracellular matrix. Such nanofibrous materials can be prepared by electrospinning (Figure 1). This technique uses a high voltage to create an electrically charged jet of polymer solution to obtain polymer fibers ranging from nanometers to a few microns in diameter. We thus have investigated strategies allowing to generate chitosan based nanofiber mats exhibiting a mechanical resistance strong enough to be easily handled while keeping the peculiar features of chitosan hydrogels favoring the interaction with cells and soft tissues to provide efficient tissue reconstruction. In a first strategy, polysaccharide-based nanofibers with a multilayered structure were prepared by combining electrospinning (ESP) and layer-by-layer (LBL) deposition techniques. Elastic nanofibers bearing charges at their surface were firstly prepared by electrospinning poly(ε-caprolactone) (PCL) with a polyelectrolyte precursor. After activation by adjusting the pH, the layer-by-layer deposition of chitosan and hyaluronic acid, can be used to coat the electrospun fibers. A multilayered structure is then achieved by alternating the deposition of the positively charged chitosan with the deposition of a negatively charged polyelectrolyte. These novel polysaccharide-coated PCL fiber mats remarkably combine the mechanical resistance typical of the core material (PCL) – particularly in the hydrated state –, with the surface properties of chitosan. Besides, crosslinked nanofibrous mats of chitosan and polyethylene oxide blends, were successfully prepared via electrospinning technique followed by heat mediated chemical crosslinking. This chemical cross-linking allows adjusting the mechanical resistance of the mats while preserving their biocompatibility. In both cases, the control of the nanofiber structure offered by the electrospinning technology, makes the developed processes very promising to precisely design biomaterials for tissue engineering. Preliminary cell culture tests corroborate the potential use of such systems in wound healing applications. [less ▲]

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See detailCross-cultural adaptation and validation of the VISA-P questionnaire for French-speaking patients with patellar tendinopathy
Kaux, Jean-François ULg; Delvaux, François ULg; Oppong-Kyei, Julian et al

in Journal of Orthopaedic & Sports Physical Therapy (2016), 46(5), 384-393

Study Design Clinical measurement study. Background The Victorian Institute of Sports Assessment–Patellar tendinopathy questionnaire (VISA-P), originally developed in English, assesses the severity of ... [more ▼]

Study Design Clinical measurement study. Background The Victorian Institute of Sports Assessment–Patellar tendinopathy questionnaire (VISA-P), originally developed in English, assesses the severity of patellar tendinopathy symptoms. No French version of the questionnaire exists. Objectives The aim of our study was to translate the VISA-P in French and verify its psychometric properties. Methods The translation and cultural adaptation were performed according to international recommendations in six steps: initial translation, translation merging, back translation to the original language, expert committee to reach a pre-final version, test of the pre-final version, and expert committee appraisal of a final version. Afterwards, the psychometric properties the final French version (VISA-PF) were assessed in 92 subjects, divided into three groups: pathological subjects (n = 28), asymptomatic subjects (n = 22) and sports-risk subjects (n = 42). Results All members of the expert committee agreed with the final version. On a scale ranging from 0 to 100 (asymptomatic subject), the average scores of the VISA-PF obtained were 53 (± 17) for the pathological group, 99 (± 2) for the healthy group and 86 (± 14) for the sports-risk group. The test-retest reliability of the VISA-PF was excellent and good internal consistency. Correlations between the VISA-PF and diverging validity of the SF-36 were low and the correlation coefficient values measured between the VISA-PF scores and converged items of the SF-36 were higher. Conclusion The VISA-PF is understandable, valid and suitable for French-speaking patients with patellar tendinopathy. [less ▲]

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See detailTrophic plasticity of Antarctic echinoids under contrasted environmental conditions
Michel, Loïc ULg; David, Bruno; Dubois, Philippe et al

in Polar Biology (2016), 39(5), 913-923

Echinoids are common members of Antarctic zoobenthos, and different groups can show important trophic diversity. As part of the ANT-XXIX/3 cruise of RV Polarstern, trophic plasticity of sea urchins was ... [more ▼]

Echinoids are common members of Antarctic zoobenthos, and different groups can show important trophic diversity. As part of the ANT-XXIX/3 cruise of RV Polarstern, trophic plasticity of sea urchins was studied in three neighbouring regions (Drake Passage, Bransfield Strait and Weddell Sea) featuring several depth-related habitats offering different trophic environments to benthic consumers. Three families with contrasting feeding habits (Cidaridae, Echinidae and Schizasteridae) were studied. Gut content examination and stable isotopes ratios of C and N suggest that each of the studied families showed a different response to variation in environmental and food conditions. Schizasteridae trophic plasticity was low, and these sea urchins were bulk sediment feeders relying on sediment-associated organic matter in all regions and/or depth-related habitats. Cidaridae consumed the most animal-derived material. Their diet varied according to the considered area, as sea urchins from Bransfield Strait relied mostly on living and/or dead animal material, while specimens from Weddell Sea fed on a mixture of dead animal material and other detritus. Echinidae also showed important trophic plasticity. They fed on various detrital items in Bransfield Strait, and selectivity of ingested material varied across depth-related habitats. In Weddell Sea, stable isotopes revealed that they mostly relied on highly 13C-enriched food items, presumably microbially-reworked benthic detritus. The differences in adaptive strategies could lead to family-specific responses of Antarctic echinoids to environmental and food-related changes. [less ▲]

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See detailL’accompagnement des demandeurs d’emploi par les intermédiaires du marché du travail : une triple opération de sélection
Gérard, Julie ULg; Beuker, Laura ULg

Conference (2016, May)

En 1997, la Convention 181 de l’Organisation internationale du travail sonne le glas du monopole public en matière de placement. Elle invite les services publics de l’emploi et les opérateurs privés à ... [more ▼]

En 1997, la Convention 181 de l’Organisation internationale du travail sonne le glas du monopole public en matière de placement. Elle invite les services publics de l’emploi et les opérateurs privés à collaborer pour fournir un accompagnement plus efficace aux demandeurs d’emploi. Cette collaboration s’inscrit dans le cadre d’une entente contractuelle où les services de l’emploi confient l’exploitation et la gestion de certaines de leurs activités à des prestataires privés au sein de partenariats publicsprivés. Qu’il s’agisse des services publics de l’emploi ou des prestataires privés, tous deux ont pour mission d’assurer l’insertion socioprofessionnelle des demandeurs d’emploi en tant que généralistes, ou spécialistes de l’employabilité. Elle s’inscrit dans la stratégie d’EU2020 et contribue à l’atteinte d’un taux d’emploi de 73,2% pour 2020. À l’aide de trois études de cas réalisées auprès du service public wallon et de deux prestataires privés exerçant en Région wallonne, nous démontrerons que cette mission d’accompagnement s’exerce au prix d’une triple sélection : une première réalisée par le politique, via la définition de publics cibles prioritaires ; une seconde opérée par les agents du service public dans leurs pratiques professionnelles d’accompagnement ; une troisième effectuée par les prestataires privés en fonction de critères objectifs et/ou subjectifs. Pour étudier la mise en oeuvre et l’effet de ces opérations de tri, nous nous inscrirons dans une approche pragmatique. Appuyé sur une étude empirique constituée d’entretiens semi-directifs (N = 45), d’observations d’interactions (N = 149) et de discussions informelles, nous montrerons les conséquences globales de ces tris pour les demandeurs d’emploi. En ne sélectionnant que les plus employables des inemployables, l’opération d’accompagnement ne serait-elle finalement qu’une agitation, et non pas une véritable mise à l’emploi ? [less ▲]

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See detailAnalyse des effets des exigences d’accountability sur l’organisation du travail des intermédiaires de l’emploi : mise en perspective de tensions identitaires
Beuker, Laura ULg; Gérard, Julie ULg

Conference (2016, May)

Suite aux nombreux bouleversements économiques et sociaux qui ont touché les pays de l’Union européenne fin des années 1980, d’impérieux besoins de lisibilité et de modernisation des services publics de ... [more ▼]

Suite aux nombreux bouleversements économiques et sociaux qui ont touché les pays de l’Union européenne fin des années 1980, d’impérieux besoins de lisibilité et de modernisation des services publics de l’emploi sont apparus. Ceux-ci doivent dorénavant veiller à la mise en œuvre d’exigences a priori incompatibles telles qu’être efficaces, flexibles et respecter une enveloppe budgétaire, tout en œuvrant à l’inclusion sociale. La mise en œuvre de ces exigences s’inscrit dans la lignée du nouveau management public qui introduit les valeurs et les modes de fonctionnement de la firme privée au sein d’administrations publiques à caractère bureaucratique (Pesqueux, 2006 ; Bezes, 2012). Parmi les services publics de l’emploi belges, cette transformation de l’action publique s’apparente à une décentralisation partielle de leurs ressources et de leurs responsabilités auprès de partenaires privés. Ce nouveau mode d’organisation du travail prend la forme de partenariats publics-privés dont la visée est d’assurer conjointement la réinsertion socioprofessionnelle des demandeurs d’emploi (Aubert et Patry, 2004). Dans leurs activités, tant les services publics de l’emploi que les prestataires privés sont amenés à devoir rendre des comptes sur la réalisation de leurs pratiques. Cette exigence d’accountability comporte un double but : (1) être transparent ; (2) légitimer l’utilisation de l’argent public. Prenant appui sur les apports de la sociologie des groupes professionnels, nous analyserons l’influence des exigences d’accountability sur l’organisation du travail des intermédiaires. Pour ce faire, nous avons réalisé une recherche empirique de nature qualitative (N = 317 observations ; N = 40 entretiens semi-directifs) en Fédération Wallonie-Bruxelles auprès de deux prestataires de l’emploi : un public et un privé. Nous montrerons que le travail relationnel d’accompagnement réalisé par ces deux acteurs est résumé par des chiffres et de la saisie de données, rendant de la sorte invisible leur coeur de métier. Initialement engagés pour réaliser une mission foncièrement relationnelle (à savoir l’accompagnement des demandeurs d’emploi), ils sont désormais contraints par des procédures et mus par une logique d’efficacité. Ce hiatus, entre l’aspect relationnel de la fonction et les exigences d’efficacité concomitantes, se cristallise dans deux tensions identitaires, dont nous rendrons compte. [less ▲]

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See detailFucoidan: a marine polysaccharide for SPECT diagnosis of thrombosis
Chollet, Lucas; Saboural, Pierre; Rouzet, François et al

in Frontiers (2016, May)

Detailed reference viewed: 9 (2 ULg)
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See detailThe Dark Side of Customer Participation: The Antecedents of Customer Participation Stress
Treger, Stephanie; Büttgen, Marion; Schumann, Jan Hendrik et al

Conference (2016, May)

Detailed reference viewed: 16 (1 ULg)
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See detailNonbelieved memories in middle-aged and older adults
Brédart, Serge ULg; Bouffier, Marion

in Consciousness & Cognition (2016), 42(2), 352-357

Detailed reference viewed: 8 (1 ULg)
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See detailCystatin C standardization decreases assay variation and improves assessment of glomerular filtration rate
Ebert, N; DELANAYE, Pierre ULg; Shlipak, M et al

in Clinica Chimica Acta (2016), 456

Detailed reference viewed: 12 (1 ULg)
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See detailTweeting is not teaching! But...
Choffray, Jean-Marie ULg

Diverse speeche and writing (2016)

So, that’s it! Five hundred Tweets on "The Art and Science of Investing" to show you the way, to share my most recent observations on the behavior of the markets, and to illustrate some of the key ... [more ▼]

So, that’s it! Five hundred Tweets on "The Art and Science of Investing" to show you the way, to share my most recent observations on the behavior of the markets, and to illustrate some of the key heuristics that I learned over the last twenty years. As, without any doubt, I am no Warren Buffett, feel free to disagree and develop you own “theory” of investing. Painful and solitary work... Success is at this price! And, based on what I did - and did not! - achieve, it shouldn’t be hard to do much better... That’s my wish for you! [less ▲]

Detailed reference viewed: 166 (50 ULg)
See detailCharles de Gaulle et les Belges francophones, 1940-1950 : la construction d’un mythe
Lanneau, Catherine ULg; Balace, Francis ULg

Conference given outside the academic context (2016)

Detailed reference viewed: 12 (0 ULg)
See detailTable ronde : Lecture/jeux vidéo, quelles expériences ?
Barnabé, Fanny ULg

Conference given outside the academic context (2016)

Le jeu vidéo et le texte sont de vieux compagnons de route. Des premiers jeux vidéo textuels à Skyrim, leur relation est pourtant compliquée. La Compagnie Rebonds d’histoires vous propose au cours de ... [more ▼]

Le jeu vidéo et le texte sont de vieux compagnons de route. Des premiers jeux vidéo textuels à Skyrim, leur relation est pourtant compliquée. La Compagnie Rebonds d’histoires vous propose au cours de cette table ronde de changer de point de vue : plutôt que de considérer les œuvres, intéressons-nous à l’expérience vécue par le lecteur et le joueur. Qu’en est-il des notions d’interactivité , de liberté, d’activité ? Quels liens entre lecteur/joueur, oeuvre et auteur ? Avec la participation de Léo HENRY (ed la Volte, Gallimard, Dystopia…) et de Fanny BARNABÉ (chercheuse en sociologie de la littérature). [less ▲]

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See detailOn Vulnerability and Vulnerabilities of Incident Reporting
Rossignol, Nicolas ULg

Doctoral thesis (2016)

This PhD thesis – composed of a series of five papers tied together by an introduction and conclusions – explores the functioning of an Incident Reporting System used in a high-risk organization. It aims ... [more ▼]

This PhD thesis – composed of a series of five papers tied together by an introduction and conclusions – explores the functioning of an Incident Reporting System used in a high-risk organization. It aims at understanding how safety is actually constructed by and through this reporting system and what it actually does to the meaning of safety when it prescribes a set of sociotechnical practices. From a conceptual point of view, this PhD thesis departs from classical risk or vulnerability analyses which tend to measure factors in order to produce what are supposed to be “objective” results and “manageable” recommendations for decision makers. By relying on a constructivist understanding of vulnerability, this research explores and characterizes situations and events the consequences of which are ambiguous and the probabilities of which are uncertain. It thus broadens the scope of classical risk or vulnerability analyses and complements it with a qualitative and discourse-based attention to organizational, cultural and ethical questions. [less ▲]

Detailed reference viewed: 30 (4 ULg)
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See detailLe droit du travail (re)visité par la Cour constitutionnelle
Kéfer, Fabienne ULg

in Boufflette, Sophie (Ed.) La cour constitutionnelle. De l'art de modeler de droit pour préserver l'égalité (2016, April 29)

L'étude porte sur le rôle de la Cour constitutionnelle dans l’édification du droit du travail. Arrêt après arrêt, elle consolide la norme attaquée ou au contraire redessine – ou presse le législateur de ... [more ▼]

L'étude porte sur le rôle de la Cour constitutionnelle dans l’édification du droit du travail. Arrêt après arrêt, elle consolide la norme attaquée ou au contraire redessine – ou presse le législateur de redessiner – les contours de cette branche du droit fortement marquée par son histoire. Elle se penche sur un peu plus de trente arrêts prononcés par la Cour constitutionnelle, principalement depuis 2008, dans les domaines suivants : le travail à temps partiel (chapitre 1), le droit de la non-discrimination (chapitre 2), certaines questions intéressant le licenciement, à savoir la durée du préavis, les mesures destinées à stimuler l’employabilité, la motivation, la notion de rémunération en cours en cas de réduction temporaire des prestations de travail, et l’indemnité d’éviction du représentant de commerce (chapitres 3 à 7), les distinctions entre employés et ouvriers autres que les conditions de licenciement (chapitre 8), la procédure de réorganisation judiciaire (chapitre 9) et la prescription (chapitre 10). [less ▲]

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See detail"Passer de voix en voix". Traduire le rythme selon Meschonnic
Viehöver, Vera ULg

Scientific conference (2016, April 29)

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See detailPhysical activity: an unknown concept
Cloes, Marc ULg

Conference (2016, April 29)

Physical educators do not have necesseraly good representations about physical activity and sedentariness. During the presentation, participants will be involved in an interactive process aiming to ... [more ▼]

Physical educators do not have necesseraly good representations about physical activity and sedentariness. During the presentation, participants will be involved in an interactive process aiming to underline the main concepts that they should use in order to become effective agents of physical activity promotion. [less ▲]

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See detailUse of stable isotope ratios to delineate coastal benthic food web structure in Adélie Land (East Antarctica)
Michel, Loïc ULg; Dubois, Philippe; Eleaume, Marc et al

Poster (2016, April 29)

Antarctica currently undergoes strong and contrasted impacts linked with climate change. While the West Antarctic Peninsula is one of the most rapidly warming regions in the world, resulting in sea ice ... [more ▼]

Antarctica currently undergoes strong and contrasted impacts linked with climate change. While the West Antarctic Peninsula is one of the most rapidly warming regions in the world, resulting in sea ice cover decrease, in some parts of East Antarctica sea ice cover tends to increase, possibly in relation with changes in atmospheric circulation. Changes in sea ice cover are likely to influence benthic food web structure through modifications of benthic-pelagic coupling, disruption of benthic production and/or modifications of benthic community structure (i.e. resource availability for benthic consumers). Here, we studied shallow (0-20 m) benthic food web structure on the coasts of Petrels Island (Adélie Land, East Antarctica) during an event of unusually high spatial and temporal (two successive austral summers without seasonal break-up) sea ice cover. Using stable isotope ratios of C, N and S, we examined importance of several organic matter sources (benthic macroalgae, benthic biofilm, sympagic algae, suspended particulate organic matter and penguin guano) for nutrition of over 20 taxa of benthic invertebrates (sponges, sea anemones, nemerteans, sessile and mobile polychaetes, gastropods, bivalves, sipunculids, pycnogonids, amphipods, sea stars, sea urchins and sea cucumbers) spanning most present functional guilds. Our results provide insights about how Antarctic benthic consumers, which have evolved in an extremely stable environment, might adapt their feeding habits in response to sudden changes in environmental conditions and trophic resource availability. [less ▲]

Detailed reference viewed: 25 (4 ULg)