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See detailA preliminary regional assessment of earthquake-induced landslide susceptibility for Vrancea Seismic Region
Micu, Mihai; Balteanu, Dan; Iunescu, Constantin et al

in EGU General Assembly Conference Abstracts (2015)

In seismically-active regions, earthquakes may trigger landslides enhancing the short-to-long term slope denudation and sediment delivery and conditioning the general landscape evolution. Co-seismic slope ... [more ▼]

In seismically-active regions, earthquakes may trigger landslides enhancing the short-to-long term slope denudation and sediment delivery and conditioning the general landscape evolution. Co-seismic slope failures present in general a low frequency - high magnitude pattern which should be addressed accordingly by landslide hazard assessment, with respect to the generally more frequent precipitation-triggered landslides. The Vrancea Seismic Region, corresponding to the curvature sector of the Eastern Romanian Carpathians, represents the most active sub-crustal (focal depth > 50 km) earthquake province of Europe. It represents the main seismic energy source throughout Romania with significant transboundary effects recorded as far as Ukraine and Bulgaria. During the last 300 years, the region featured 14 earthquakes with M>7, among which seven events with magnitude above 7.5 and three between 7.7 and 7.9. Apart from the direct damages, the Vrancea earthquakes are also responsible for causing numerous other geohazards, such as ground fracturing, groundwater level disturbances and possible deep-seated landslide occurrences (rock slumps, rock-block slides, rock falls, rock avalanches). ... [less ▲]

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See detailQuality of work life of rural emergency department nurses and physicians: a pilot study
Bragard, Isabelle ULg; Dupuis, Gilles; Archambault, Patrick et al

in Canadian Family Physician (2015), 61(Suppl 1), 9

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See detailCan we identify patients to be treated in osteoarthritis?
Arden, NK; Richette, P; Cooper, C et al

in Osteoporosis International (2015), 26(S1), 61-62

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See detailRecommendations for the registration of drugs to treat sarcopenia
Reginster, Jean-Yves ULg; Cooper, C; Rizzoli, R et al

in Osteoporosis International (2015), 26(S1), 62

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See detailEndocrine disruption: it starts in the brain.
Parent, Anne-Simone ULg

Conference (2015)

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See detailExperimental Validation of Structural Damping Models for Tape Springs
Dewalque, Florence ULg; Bruls, Olivier ULg

in Proceedings of the 6th European Conference for Aerospace Sciences (EUCASS) (2015)

The objective of this paper is to study the effect of structural dissipation on the dynamic response of tape springs using experimentally-validated finite element models. In order to reach this goal, an ... [more ▼]

The objective of this paper is to study the effect of structural dissipation on the dynamic response of tape springs using experimentally-validated finite element models. In order to reach this goal, an experimental set-up is built. It consists of two tape springs connected to a fixation support and a dummy panel. The data are collected through a force plate and a 3D motion analysis system. The post-treatment of the experimental results and a comparison with a finite element model show that the Kelvin-Voigt model gives a fair approximation of the structural damping for small oscillations, however, more advanced model should be considered in future works for a better understanding in case of large displacements. [less ▲]

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See detailEmisiones de NO en la mesosfera marciana: medidas y simulaciones
González-Galindo, F; López-Valverde, M.A.; Gagné, Marie-Eve et al

Conference (2015)

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See detailProtein folding at extreme temperatures: current issues
Feller, Georges ULg

in Biophysical Journal (2015), 108(2 suppl. 1), 358

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See detailMonte Carlo Simulations of Autorotative Dynamics of a Simple Tower Crane Model
Vanvinckenroye, Hélène ULg; Denoël, Vincent ULg

in Proceedings of the 14th International Conference on Wind Engineering (2015)

The increasing number of crane accidents recorded over the last years might be understood as a need for progress on crane modeling. The induced risk of self-excited vibrations has already been ... [more ▼]

The increasing number of crane accidents recorded over the last years might be understood as a need for progress on crane modeling. The induced risk of self-excited vibrations has already been investigated through numerous experiments. This work presents a simple numerical model of a crane in a turbulent wind field, in order to support the available experimental approaches. First, the problem is defined with the necessary assumptions of the model. Second, the equation of motion is developed and wind characteristics are detailed. This equation presents several specificities requiring dedicated resolution methods. In a first analysis, the crane model is simplified in order to approach the behavior of the parametric pendulum and enable a general comparison of both responses. Indeed, the parametric pendulum is a well-known problem that is already widely described in the literature. In a second step, the response of the crane is studied under a realistic stochastic wind load with the full model. [less ▲]

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See detailHydromechanical behaviour of bentonite under in situ conditions
Dieudonné, Anne-Catherine ULg; Talandier, Jean; Collin, Frédéric ULg et al

Conference (2015)

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See detailChallenges in teaching architectural morphogenesis
Stals, Adeline ULg; Elsen, Catherine ULg; Jancart, Sylvie ULg et al

in Proceedings of the 3rd International Conference for Design Education Researchers (2015)

Reviewing the successive cognitive, operative and constructive models of architectural morphogenesis through time, the paper first recalls students and teachers in architecture how designers started ... [more ▼]

Reviewing the successive cognitive, operative and constructive models of architectural morphogenesis through time, the paper first recalls students and teachers in architecture how designers started experimenting digital design to reach self-generative, morphogenetic morphologies. Generally referred to as “non-standard architecture”, this innovative morphogenesis favours a new kind of spatial and architectural audacity but also generates three types of rupture: i) a rupture between form and structure; ii) a rupture in terms of process continuity and iii) a rupture in terms of multi-disciplinary collaboration. We consequently have to acknowledge the fact that, at a current state, non-standard architecture still struggles in terms of self-coherency and implementation, leaving a large amount of projects at their virtual, embryonic state especially in pedagogical contexts. We believe the challenge resides in overcoming the overly simplistic and reductionist appeal of purely formal and visual non-standard architecture: these morphologies should, on the contrary, be intrinsically defined by their form and structure relationship. We suggest such reconciliation should occur during the early stages of architectural education. Two experimental instruments, that perhaps constitute interesting renewed pedagogical models, are reported in this paper and we conclude by listing the remaining challenges when it comes to the teaching of architectural morphogenesis. [less ▲]

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See detailA Typology of Customer-Perceived Bad News in Service Encounters
Delcourt, Cécile ULg; Gremler, Dwayne; van Riel, Allard et al

in The 14th International Research Symposium on Service Excellence in Management (2015)

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See detailIn vitro assessment of novel carbohydrates prebiotic potential in a co-inoculation model of the pig intestines
Tran, Thi Hanh Tham ULg; Boudry, Christelle; Everaert, Nadia ULg et al

in Book of Abstracts (2015)

Introduction: Innovative plant biomass fractionation methods produce new feed additives that could modulate the pig intestinal microbial population. Material and methods: Such novel indigestible ... [more ▼]

Introduction: Innovative plant biomass fractionation methods produce new feed additives that could modulate the pig intestinal microbial population. Material and methods: Such novel indigestible carbohydrates (CHO) were investigated for their prebiotic potential and their influence on Salmonella thyphimurium in a co-inocu¬lation in vitro fermentation model of the pig intestines. Inulin, cellobiose, pecto- (POS), iso-malto- (IMOS), xylo-oligosaccharides (XOS), and gluconic acid (GLU) were fermented by fecal microbes for 72h. Salmonella (7.3 log CFU/ml) were co-inoculated after 6h . Fer¬mentation kinetics was modeled and after 6, 12, 24 h, broth was analysed for short-chain fatty acid using HPLC and bacterial population using q-PCR. Results and discussion: Cellobiose was the fastest fermenting CHO followed by inulin and IMOS (P<0.01). After 6h, cellobiose yielded the highest SCFA production (684 mg/g) and lactate molar ratio (0.484). POS fermented slower. XOS and GLU were little fermented (150 and 175 mg SCFA/g after 24h). Nonetheless, GLU yielded the highest butyrate molar ratio (0.290 at 12h) (P<0.01). Although Salmonella counts did not differ, some CHO dis¬played obvious prebiotic properties, namely inulin and IMOS since they supported the highest growth of Lactobacilli and Bifidobacteria populations after 6 and 12h of fermen¬tation (8.18 to 8.56 log CFU/ml) (P<0.01). Cellobiose and GLU scored well for Lactobacilli too, but poorly for Bifidobacteria (6.41 to 6.92 log CFU/ml) (P<0.01). It is concluded that IMOS seem the most promising prebiotic but owing to their fermentation patterns yield¬ing high levels of lactate or butyrate, also cellobiose and GLU deserve further investigation in in vivo models. [less ▲]

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See detailPrevalence of frailty in nursing home residents according to various diagnostic tools
Buckinx, Fanny ULg; Reginster, Jean-Yves ULg; Dardenne, Nadia ULg et al

in Osteoporosis International (2015), 26(S1), 160-161

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See detailRecommendation for the management of knee osteoarthritis
Reginster, Jean-Yves ULg; Bruyère, Olivier ULg

in Bone, Muscle and Joint Diseases (2015), (S35), 40

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See detailTechnology Assessment Working Lunches at the Walloon Parliament
Charlier, Nathan ULg; Delvenne, Pierre ULg; Parotte, Céline ULg et al

Conference (2015)

A video of the presentation can be seen here: http://slideslive.com/38893131/ta-working-lunches

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See detailHealth related quality of life in sarcopenia
Beaudart, Charlotte ULg; Reginster, Jean-Yves ULg; Slomian, Justine ULg et al

in Osteoporosis International (2015), 26(S1), 148-149

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See detailIn-situ & remote sensing studies of outer planet aurora
Badman, S.V.; Baines, K.H.; Bonfond, Bertrand ULg et al

Conference (2015)

The combination of in situ and remote sensing measurements of auroral processes has yielded a wealth of information about solar wind-magnetosphere-ionosphere coupling at the giant planets. Results from ... [more ▼]

The combination of in situ and remote sensing measurements of auroral processes has yielded a wealth of information about solar wind-magnetosphere-ionosphere coupling at the giant planets. Results from the 2014 joint HST-Cassini Saturn auroral campaign are highlighted to demonstrate some of the interesting features observed in situ and their auroral counterparts, including: (1) perturbations on tens of minutes timescales in the high latitude ion fluxes, magnetic field, broadband plasma waves, and auroral intensity; (2) corotating auroral intensifications and their correspondence with models of the planetary period oscillations based on magnetic field perturbations; and (3) sub-corotating auroral features and their relationship to ring current enhancements observed in Energetic Neutral Atom (ENA) observations [less ▲]

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See detailHommes et dieux dans le formulaire métrique indo-iranien ancien
Swennen, Philippe ULg

in Démons iraniens: Actes du colloque international organisé à l'Université de Liège les 5 et 6 février 2009 à l'occasion des 65 ans de Jean Kellens (2015)

No Indo-iranian formula was coordinating gods with demons, but another one, welle attested, was linking mortal men with gods. Initially, it was saying the solidarity between both groups, who were meeting ... [more ▼]

No Indo-iranian formula was coordinating gods with demons, but another one, welle attested, was linking mortal men with gods. Initially, it was saying the solidarity between both groups, who were meeting on the sacrificial ground. Its use in Rigvedic and Avestan texts shows divergent evolutions. In India, men and gods go away from each other. In Iran, the original coordination, whose negative meaning is appearing, is inserted ina an always wider demonic list, which is included in a sentence using another inherited formula, whose theme was the crossing of enmities. During the evolution process of this formula, men go with the ancient *daiva- to demonisation. [less ▲]

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See detailCorrélations entre différents tests destinés à évaluer la souplesse des ischio-jambiers
Demoulin, Christophe ULg; Wolfs, Sébastien ULg; Granado, Caroline et al

in Kinesitherapie Revue (2015), 15(158), 44-45

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See detailAnalyse des contraintes de développement du fruit de la passion au Burundi. Cas de la commune Matongo province Kayanza
Bashangwa Mpozi, Bosco ULg; Ndimanya, Patrice; Lebailly, Philippe ULg

in Brot, Jean (Ed.) Les Cahiers de l'Association Tiers-Monde n° 30-2015 : XXXes Journées sur le Développement "Ethique, entrepreneuriat et développement" (2015)

Face à une situation de manque de terre et de pression démographique sans aucune amélioration des techniques de production, le choix des cultures à pratiquer permettant de rentabiliser la petite surface ... [more ▼]

Face à une situation de manque de terre et de pression démographique sans aucune amélioration des techniques de production, le choix des cultures à pratiquer permettant de rentabiliser la petite surface agricole disponible devient donc crucial pour les producteurs de Matongo en particulier et du Burundi en général. C'est dans ce contexte que le fruit de la passion est intégré dans les systèmes de production de certains ménages de Matongo dans le but d'améliorer leurs conditions de vie grâce à un supplément de revenu. Vu l'état actuel de la vulnérabilité de l'agriculture et de l'économie dans cette commune, il s'avère important de connaître les contraintes rencontrées par les adoptants du fruit de la passion en tenant compte de l'environnement dans lequel se pratique sa culture. [less ▲]

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See detailLandslide Susceptibility Mapping with Data Mining Methods—a Case Study from Maily-Say, Kyrgyzstan
Braun, A.; Fernandez-Steeger, T.; Havenith, Hans-Balder ULg et al

in Engineering Geology for Society and Territory-Volume 2 (2015)

Abstract: Multiple factors, such as geology, high mountain topography, seismic activity, climatic conditions and mining activities cause significant landslide hazard in the region around Maily-Say ... [more ▼]

Abstract: Multiple factors, such as geology, high mountain topography, seismic activity, climatic conditions and mining activities cause significant landslide hazard in the region around Maily-Say, Kyrgyzstan. To assess the landslide susceptibility a database containing landslide information and geological, morphological and hydrological parameters associated with landslide occurrence was established and analyzed with different data mining algorithms. The most promising results were achieved with an Artificial Neural ... [less ▲]

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See detailOcanacatib antifracture efficacy and saftey in postmenopausal women with osteoporosis: results from the phase III long-term adonacatib fracture trial (LOFT)
McClung, MR; Langdahl, B; Papapoulos, S et al

in Osteoporosis International (2015), 26(S1), 35-36

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See detailGeophysical investigation of the Hockai Fault Zone, Eastern Belgium
Havenith, Hans-Balder ULg; Nguyen, Frédéric ULg; Halleux, Lucien ULg et al

in EGU General Assembly Conference Abstracts (2015)

In the frame of a regional project evaluating the geothermal potential of the Wallonian Region of Belgium, the Hockai Fault Zone has been identified as one of the most interesting targets. It is a ... [more ▼]

In the frame of a regional project evaluating the geothermal potential of the Wallonian Region of Belgium, the Hockai Fault Zone has been identified as one of the most interesting targets. It is a seismically active fault zone that hosted the largest historical earthquake in Northwestern Europe, the M6-6.5 Verviers event in 1692 as well as a swarm of small earthquakes that was recorded in 1989-90. On the surface, the presence of the fault zones is marked by a series of geomorphic features, such as several landslides near the borders in the northern part, repeated NW-SE oriented scarps all along the Eastern border (over a distance of 40 km), river diversions and captures with formation of paleo-valleys.... [less ▲]

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See detailGrip fatigue resistance and self-perceived fatigue in relation with sarcopenia and quality of life
Beaudart, Charlotte ULg; Reginster, Jean-Yves ULg; Bautmans, I et al

in Osteoporosis International (2015), 26(S1), 147-148

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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 detailDéveloppement récent de la culture de l'épeautre en Belgique
Burny, Philippe ULg

in Watillon, Bernard; Bodson, Bernard (Eds.) Livre Blanc "Céréales", édition février 2015 (2015)

L'épeautre est une culture ancienne, pratiquée depuis des siècles, et qui a été progressivement remplacée, comme le seigle, par le froment. Il s'est cependant maintenu modestement dans quelques régions ... [more ▼]

L'épeautre est une culture ancienne, pratiquée depuis des siècles, et qui a été progressivement remplacée, comme le seigle, par le froment. Il s'est cependant maintenu modestement dans quelques régions aux sols plus pauvres et au climat plus rigoureux que ceux qui conviennent le mieux au froment. Les aspects "santé" prenant de plus en plus d'importance dans les pays riches, la bonne réputation de l'épeautre en ce domaine a permis un récent regain d'intérêt pour cette culture, dont les prix se sont envolés au cours de l'année 2014. Cette évolution est-elle durable ou ne sera-t-elle qu'un feu de paille ? [less ▲]

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See detailActores valorizando la ciencia en regimenes científicos estrategicos
Charlier, Nathan ULg; Delvenne, Pierre ULg

Conference (2015)

With the underlying hypothesis of a shift toward strategic or neoliberal science regimes, much work has been done to analyze the multiple transformations of science institutions and policies over the last ... [more ▼]

With the underlying hypothesis of a shift toward strategic or neoliberal science regimes, much work has been done to analyze the multiple transformations of science institutions and policies over the last decades (e.g. Mirowski and Sent 2008; Slaughter & Rhoades, 2004; Bruno, 2008). The trends towards privatization and commodification of science are undisputable but we argue that little attention has been paid so far to the various political conceptions of research and innovation (R&I) coexisting within strategic science regimes. Cognitive approaches to public policy already stressed the circular relationship between meaning and power (e.g. Muller and Surel, 1998; Roe, 1994), but strategic science has remained out of the scope of such analyses. Regarding R&I policies, this leads to different ways to conceive of the “value” of science, some related to preexisting institutions and narratives, and some branching out toward new cognitive resources to achieve politico-economic aims. In this article, we hypothesize the coexistence of at least four justificatory narratives which help structuring the representations and actions of scientists and policymakers when they address science as a political object: ‘science for the sake of science’, ‘science, the endless frontier (continued)’, ‘knowledge-based economy’ and ‘grand societal challenges’. Each one attributes a different value to science, proposes a specific organization for the R&I system, and addresses the relation with economy and society differently. In order to understand how these justificatory narratives are locally enacted, and thereby grounded in R&I policymaking, we analyze the political discourses on science of actors from biotechnology labs, university management boards, and science policy advisory boards in Wallonia, French-speaking Belgium. We find traces of every of the four ideal-typical narratives that we identified, either in almost “pure” versions or in hybridized forms. We conclude that these developments are part of the same multidirectional movement of re-contextualization of science in society and we attend to some of the implications induced. [less ▲]

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See detailThree-node zero-thickness hydro-mechanical interface finite element for geotechnical applications
Cerfontaine, Benjamin ULg; Dieudonné, Anne-Catherine ULg; Radu, Jean-Pol ULg et al

in Proceedings of coupled 2015 (2015)

The paper briefly presents the main features of a hydro-mechanical coupled finite element of interface. The mechanical problems takes into account the the detection of contact, the development of a ... [more ▼]

The paper briefly presents the main features of a hydro-mechanical coupled finite element of interface. The mechanical problems takes into account the the detection of contact, the development of a contact pressure, the shearing and the relative sliding between two solids. A three-node discretisation of hydraulic problem allows the representation of fluid flows across and in the plane of the interface. The method involves a drop of pressure between each side of the interface and the inner medium. The hydro-mechanical couplings come from 1) the definition of the total pressure acting on each side of the interface according to the Terzaghi’s principle; 2) the dependence of the permeability on the gap variation; 3) the variation of the fluid mass stored within the gap. [less ▲]

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See detailOn some drawbacks and possible improvements of a lagrangian finite element approach for simulating incompressible flows
Cerquaglia, Marco Lucio ULg; Deliège, Geoffrey ULg; Boman, Romain ULg et al

Conference (2015)

In this paper a Lagrangian finite element approach for the simulation of incompressible flows is presented, based on the so-called Particle Finite Element Method (PFEM). The spatial discretization and the ... [more ▼]

In this paper a Lagrangian finite element approach for the simulation of incompressible flows is presented, based on the so-called Particle Finite Element Method (PFEM). The spatial discretization and the definition of the boundary terms are discussed in detail with a specific focus on free-surface flows. Additionally, some problems that can arise from the use of such a method are pointed out. Some numerical examples are given and discussed in the last section of the paper. [less ▲]

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See detailAnalyzing Access, Egress, and Main Transport Mode of Public Transit Journeys: Evidence from the Flemish National Household Travel Survey
Creemers, Lieve; Bellemans, Tom; Janssens, Davy et al

in Proceedings of the 94th Annual Meeting of the Transportation Research Board (2015)

The primary objective of this paper is to explore the influence of socio-demographic and contextual variables on the multimodal character of public transit journeys. Accounting for multimodality in public ... [more ▼]

The primary objective of this paper is to explore the influence of socio-demographic and contextual variables on the multimodal character of public transit journeys. Accounting for multimodality in public transit journeys is important from a demand modeling point of view, especially in the assessment of new projected public transit infrastructure. To meet the objective, data from the national household travel survey of Flanders (Belgium) is analyzed. Based on 2,202 public transit journeys, the main public transit mode choice (bus/tram/metro or train) and access/egress mode choice are simultaneously estimated using a multinomial logit model, and by explicitly making a distinction between unimodal and multimodal transit journeys. The results indicate that various socio-demographical (e.g. age, gender, level of education, household income) and contextual factors (e.g. journey distance, journey motive, urbanization degree, car availability) significantly influence the joint decision process. Total journey distance and car availability are identified as the most important explanatory variables. In terms of model performance, the model appears to yield satisfactory predictions, justifying the integration of the model in more general demand modeling frameworks. [less ▲]

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See detailAggregation in Ladybeetles: From chemistry to behaviour
Verheggen, François ULg

Conference (2015)

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See detailDispositifs de visibilité : le Selfie et les indices de son auto-production
Hagelstein, Maud ULg

Conference (2015)

La proposition que je ferai aujourd’hui s’inscrit dans le cadre d’une réflexion plus large sur l’image photographique commune (celle qu’on appelle encore photographie populaire, amateur, familiale, privée ... [more ▼]

La proposition que je ferai aujourd’hui s’inscrit dans le cadre d’une réflexion plus large sur l’image photographique commune (celle qu’on appelle encore photographie populaire, amateur, familiale, privée, vernaculaire ou même domestique – pour reprendre l’appellation de Bourdieu). Je voudrais envisager ici un dispositif visuel spécifique (celui du selfie) dans lequel la construction de l’image (agencement, organisation, esthétique propre) produit des effets narratifs. Pour le dire une première fois : le selfie travaille à la mise en scène d’une action contextualisée et indique l’implication du sujet dans celle-ci (le sujet étant ici à la fois l’opérateur de l’image et une partie de son contenu). La participation du sujet à la scène représentée s’expose généralement sur le mode temporel de la spontanéité – spontanéité de la prise de vue qui renforce l’authenticité de l’image, spontanéité dont on pourra montrer qu’elle est parfois fabriquée. Pourquoi accorder de l’attention à cet objet apparemment anecdotique du point de vue de sa qualité (même si omniprésent), objet qui est aujourd’hui augmenté d’un effet de mode indéniable (sans doute dérangeant), et souvent considéré comme vulgaire (au sens étymologique du latin vulgus, le « bas peuple » - la vulgarité caractérisant les modes d’expression et de comportement des couches populaires aux yeux de ceux qui estiment ne pas en faire partie) ? Précisément, cet objet me permet de continuer à investiguer (modestement) du côté des usages sociaux de l’image photographique commune. Ou pour être plus précise : le problème qui m’intéresse est celui du rapport entre les usages sociologiquement déterminés de l’image (que Bourdieu ou Heinich me permettent de décrire) et les effets d’indétermination provoqués par certains types d’images : ces effets d’indétermination (auxquels le philosophe J. Rancière a pu nous rendre attentifs) sont toujours provisoires (les images ne restent pas neutres et indéterminées) – mais ils permettent que les choses soient déterminées autrement. [less ▲]

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See detailVirus indexing and sanitation of international banana collection: insights from a 5-years collaborative effort
De Clerck, Caroline ULg; Parmenter, Kathleen; Vandenhouwe, Ines et al

Conference (2015)

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See detailModeling accessibility to schools: the case of Wallonia, Belgium
Maldague, Hubert ULg; Teller, Jacques ULg; Cools, Mario ULg

in Rasouli, Soora; Timmermans, Harry (Eds.) Current Issues in Transportation Research, Proceedings of the BIVEC/GIBET Transport Research Days 2015 (2015)

Several recent studies about school mobility highlighted the significant decline of active modes and public transport's modal shares. Associated with this decline, it can be observed that distances ... [more ▼]

Several recent studies about school mobility highlighted the significant decline of active modes and public transport's modal shares. Associated with this decline, it can be observed that distances between home and schools have been rising the last two decades. To develop appropriate policies alleviating the negative effects of the increased motorization in the school commute, a diagnosis of probable causes is required. To perform this diagnosis, we develop an accessibility-based methodology using data stemming from the Belgian national household travel (BELDAM) survey. Gamma-functions are calibrated to describe the use of different transport modes according to their relative travel times. Data from OpenStreetMap are used to describe the Walloon roads network in terms of the maximum allowed vehicle speed and length for each link. Properties of the network are modified to match with other transport modes. Maps of accessibility to schools are computed for each transport mode by merging the value of access time represented by isochrones and the calibrated gamma-functions. [less ▲]

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See detailClinical components linked to sarcopenia: the sarcophage study
Beaudart, Charlotte ULg; Reginster, Jean-Yves ULg; Petermans, Jean ULg et al

in Osteoporosis International (2015), 26(S1), 144

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See detailSpectroscopy and photometry of L-type asteroids
Tanga, Paolo; Devogele, Maxime ULg; Campins, H. et al

Conference (2015)

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See detailDiscovery of Diffuse Aurora on Mars
Schneider, Nick; Stiepen, Arnaud ULg; Jain, S et al

Conference (2015)

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See detailHow can we help implementing ESCEO alorith in real life?
Reginster, Jean-Yves ULg

in Osteoporosis International (2015), 26(S1), 382

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See detailConceptual metaphors in political discourse : evidence from citizen discourse
Perrez, Julien ULg; Reuchamps, Min

Conference (2015)

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See detailBridging Space Weather to Planetary Environments
Plainaki; Milillo; Andriopoulou et al

Conference (2015)

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See detailLa Bildwissenschaft dans le sillage de l’iconologie
Hagelstein, Maud ULg

Conference (2015)

Il est tout à fait commun aujourd’hui de constater l’omniprésence et la prolifération des images dans nos sociétés. Depuis quelques années (voire quelques décennies), la théorie contemporaine s’est ... [more ▼]

Il est tout à fait commun aujourd’hui de constater l’omniprésence et la prolifération des images dans nos sociétés. Depuis quelques années (voire quelques décennies), la théorie contemporaine s’est redéployée sur de nouveaux territoires disciplinaires en développant un outillage conceptuel inédit. Des débats assez vifs ont naturellement accompagné ce redéploiement (dont je vais très vite, vous allez le comprendre, relativiser la nouveauté). Or, le domaine (pseudo-)émergeant des études visuelles réclame une enquête épistémologique approfondie, vouée non pas à dessiner un programme théorique fédérateur/homogène, mais à cartographier au moins la variété des points de vue adoptés sur l’image et, peut-être, à dégager quelques axes problématiques communs. Le projet général de ces journées consiste notamment à montrer comment les recherches récentes entreprises par les principaux protagonistes de la théorie de l’image contemporaine (allemande) s’inscrivent dans le cadre d’une réflexion large sur l’héritage de l’iconologie. Ceci me semble le passage obligé d’une enquête sur les enjeux épistémologiques (méthodologiques) de la théorie de l’image actuelle. En effet, du point de vue de son ancrage philosophique, la théorie de l’image contemporaine puise ses principales ressources conceptuelles dans l’iconologie critique – discipline d’interprétation des images inaugurée en 1912 par le théoricien de l’art Aby Warburg (1866-1929), nourrie par la philosophie des formes symboliques de Ernst Cassirer (1874-1945), et systématisée par Erwin Panofsky (1892-1968) dans ses Essais d’iconologie (1939), notamment. Ce segment de l’historiographie (années 1920-1930), redécouvert à la fin des années 1980 (pour ce qui est de Warburg en tout cas), a fortement marqué toute une génération d’intellectuels. Il s’agira entre autres ici de faire apparaître l’impulsion qu’a donnée la critique (parfois sévère/injuste) des travaux de Panofsky (surtout) à la Bildwissenschaft. Visant l’interprétation du contenu symbolique des images, la méthode iconologique concevait l’art comme l’un des domaines essentiels de production de sens, c’est-à-dire un domaine d’expression dont la vocation principale serait de charger de sens des éléments sensibles/matériels, en s’inscrivant de surcroit dans un contexte socio-historique spécifique puisque l’œuvre reflète/révèle une vision du monde historiquement déterminée que l’iconologue met au jour. Partant de là, la critique la plus basique (et néanmoins commune) consiste à dire (et à redire inlassablement) que Panofksy semble avoir, au moment de l’institution de cette méthode, écarté la plupart du temps les préoccupations formelles (tout ce qui concerne les couleurs, par ex., les traits et toutes les qualités proprement plastiques/picturales) pour se concentrer avec plus d’insistance sur les éléments de contenu et analyser au mieux les liens de l’œuvre d’art aux significations, aux idées. [less ▲]

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See detailImpact of light and melanopsin on human cognitive brain function
Vandewalle, Gilles ULg

Conference (2015)

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See detailDes insectes au menu: apports protéiques et nutriments particuliers?
Caparros Megido, Rudy ULg; Alabi, Taofic ULg; Haubruge, Eric ULg et al

in 56èmes Journées Nationales de Diététique et de Nutrition (2015)

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See detailLes nouveaux outils de diagnostic et de pronostic de la myopathie atypique
Habyarimana, Jean ULg; BOEMER, François ULg; Amory, Hélène ULg et al

in Proceeding de la 41ème Journée de la Recherche équine (2015)

In equines, ingestion of hypoglycin A, a toxin produced in the seeds (samaras) of sycamore maple (Acer pseudoplatanus) tree alters the energetic metabolism of muscle cells and results in atypical myopathy ... [more ▼]

In equines, ingestion of hypoglycin A, a toxin produced in the seeds (samaras) of sycamore maple (Acer pseudoplatanus) tree alters the energetic metabolism of muscle cells and results in atypical myopathy (AM). This alterations leads to a characteristic biochemical profile of acylcarnitines (AC) that enables to confirm the diagnosis of AM. This study aims at validating a methodology for the dosage of hypoglycin A in vegetal extracts but also in blood. In addition, the biochemical profile in AC has been determined in AM cases (5 survivors and 13 deceased) and in 5 horses suffering from exercise-induced myopathy. The AC profiles of these horses have been compared to the one of healthy horses (n = 35). This study showed that hypoglycin A was present in seeds and spring seedlings of sycamore and also in blood of AM cases horses. In addition, the establishment of AC profile contributes to the diagnostic and helps to assess the prognosis of AM cases. [less ▲]

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See detailImpact of forage legumes on nutritive value and growth performance in pigs reared in traditional farming systems in tropical Africa
Kambashi Mutiaka, Bienvenu ULg; Kalala, Gaetan; Mafwila, Jacques et al

in Book of Abstracts (2015)

Forage legumes (FL) are used in tropical countries to feed pigs, either by reducing allowance of well-balanced diets and supplementing with FL or by incorporating FL in unbalanced fibre-rich diets. The ... [more ▼]

Forage legumes (FL) are used in tropical countries to feed pigs, either by reducing allowance of well-balanced diets and supplementing with FL or by incorporating FL in unbalanced fibre-rich diets. The impact of both strategies on animal and economical performances was studied in 2 growth experiments. In Exp. 1, 4 groups of 8 growing pigs (25.5 +- 4.2 kg) were fed under one of 4 dietary treatment: a well-balanced diet (CONTROL) ad libitum or 80% of the ad libitum level of CONTROL + ad libitum freshly cut foliage of one of 3 FL species (Vigna unguiculata, Stylosanthes guinanensis, or Psophocarpens scandens). Similarly, in Exp. 2, 4 groups of 6 pigs (22.6 +- 3.7 kg) were fed one of 4 experimental diets: the well-balanced diet (CONTROL), an unbalanced traditional diet rich in fibre and made of bran, brewers grain, and corn (TRAD) or 80% TRAD diet supplemented with 20% of one of 2 FL hays (V. unguiculata or S. guinanensis). Animals were regularly weighed and feed intake was monitored. After 90d, animals were slaughtered and carcass composition and economic traits were recorded to calculate production costs and economical value. In addition, nutritive value of the FL and the diets was assessed by means of an in vitro model of the pig digestive tract combining an enzymatic hydrolysis to a fermentation with a fecal inoculum. Results indicate that pigs fed diets with FL (Exp.1) and TRAD with and without FL (Exp.2) had reduced ADG, final live and carcass weights (P<0.05) compared to CONTROL pigs. Surprisingly , dry matter intake (DMI) was also reduced by 10% with those diets compared to CONTROL (P<0.001) in both experiments. In Exp. 1, FCR and carcass dressing were not affected by the 20% reduction in CONTROL diet and supplementation with fresh FL, while in Exp. 2 those parameters were negatively affected in TRAD with and without FL compared to CONTROL pigs. In vitro data showed that differences in nutritive values explained most differences in growth performances and carcass traits, but not the decrease in intake, since passage rate and voluntary intake are not taken into account in the in vitro model. Economical assessment showed that fresh foliage of FL could increase incomes, as long as their production costs remain marginal, but the incorporation of FL hays could not improve economical performances in pigs fed traditional unbalanced fibre-rich diets. [less ▲]

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See detailDiachronical soil surveys: a way to quantify long term diffuse erosion
Pineux, Nathalie ULg; Michel, Brieuc ULg; Legrain, Xavier ULg et al

in Geophysical Research Abstracts (2015), 17

The loess belt of Western Europe is a high-risk area regarding diffuse erosion. It is due to the climate and the topography but also to the soil type. Loamy soils are naturally highly sensitive to diffuse ... [more ▼]

The loess belt of Western Europe is a high-risk area regarding diffuse erosion. It is due to the climate and the topography but also to the soil type. Loamy soils are naturally highly sensitive to diffuse erosion. Hence, these soils are very fertile. So, they are intensively cultivated which increases their sensitivity to erosion. Sheet erosion is an erosion type strongly represented in these regions. Contrarily to the concentrated form of erosion which happens more brutally, sheet erosion needs long-term observation time-scales, which remains rare. In Belgium, a soil map was established in 1956. This map is quite detailed and notably informs about the different horizons which are in the profile (ploughed horizon, eluvial horizon, clay included between the horizons, carbonate-free loess horizon, and all these were characterised by drainage class) and their depth. It was based on a dense augering network across the country (one point every 75 meters). A new augering campaign was done again in 2014. It consisted in one observation every 50 meters on an agricultural watershed of 124 hectares located in the centre of Belgium. This catchment has been cultivated since the 14th century and is representative of the local context (gentle slope (3-8%), plot size (mean value of 10 ha), …). We compared the two soil maps produced on this site with a 58years time lapse. Results show that the large majority of the watershed falls from upslope soils with weak erosion to slope soils with strong erosion. The soil thickness diminished in some zones to 1m10 (minimum estimation) of erosion. This comparison shows that very few upslope soils are preserved. On the other hand, the areas where colluviums were present to the full depth stay at the same place in the main thalweg of the watershed. Other areas on the watershed seem to be subject to a (minimum estimation) of 40cm of sediments deposition. Large areas in the watershed suffered from erosion and came to deposition areas as the clay horizon is no longer observed under the colluviums. It can be highlighted that soil depths were worryingly lost during 58 years of tillage and that some soils were converted to colluviums which is of lower agronomical quality than the original soils which had a clay horizon below to keep water. Diachronical soil survey offers an unique insight of long term diffuse erosion and should demonstrate the importance of preserving soils even in regions where agricultural yields are not (yet) affected by erosion. [less ▲]

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See detailNavigating the uncertain seas of controversies – A pedagogical wind rose
Verpoorten, Dominique ULg

in Melard, François; Stassart, Pierre M (Eds.) Proceedings of the International Interdisciplinary Working Conference "Teaching complexity and uncertainty on Environmental Issues - Practices, Theories and Products" (2014, December 23)

The Arlon conference brought together lecturers willing to share and discuss aspects of their practice of “controversies”, seen as a teaching/learning method suited to the contextual needs and demands of ... [more ▼]

The Arlon conference brought together lecturers willing to share and discuss aspects of their practice of “controversies”, seen as a teaching/learning method suited to the contextual needs and demands of higher education environmental studies. The paper contributes to this joint reflective effort by providing conceptual tools helping to interpret the practice, to question what it puts at stake and to detect, from a pedagogical viewpoint, key issues and upcoming questions. The contribution falls within the Conference's aim n°2: “share theories or conceptual propositions that make it possible to equip the teaching approaches and to give them theoretical and methodological foundations” (Program Arlon Conference 2014, p. 2). The article takes a traditional stance, looking at the contributions to the conference through “constructive alignment”(Biggs, 1996), a basic principle meant to secure the pedagogical validity of any given learning situation by establishing a triple consistency (Kovertaite & Leclercq, 2006; Leclercq, 1995; Petit, Castaigne, & Verpoorten, 2007; Tyler, 1949) between objectives, methods and assessment. [less ▲]

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See detailThe Politics of National Accounting: Assessing Walloon Public Debt
Piron, Damien ULg

Conference (2014, December 19)

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See detailSize Matters, book-to-market does not! The F&F empirical CAPM revisited
Lambert, Marie ULg; Hübner, Georges ULg

Conference (2014, December 18)

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See detailUncertainty in Training-Image Based Inversion of Hydraulic Head Data Constrained to ERT Data: Workflow and Case Study
Hermans, Thomas ULg; Nguyen, Frédéric ULg; Caers, Jef

Conference (2014, December 18)

In inverse problems, investigating the relationship between data and prior models and the uncertainty related to the posterior distribution of model parameters are as important as matching the data. In ... [more ▼]

In inverse problems, investigating the relationship between data and prior models and the uncertainty related to the posterior distribution of model parameters are as important as matching the data. In recent years, many efforts have been done to assess the posterior distribution of a given problem with reasonable computational costs through inversion techniques such as McMC. The derived posterior distribution is always dependent on the prior distribution. However, most of the studies ignore modeling the prior with realistic uncertainty. In this paper, we propose a workflow to assess the uncertainty of inversion of hydraulic heads data through the addition of electrical resistivity tomography (ERT) constraining data. The workflow is divided in three successive steps: 1) Construction of prior: we generate multiple alternative geological scenarios from literature data (architecture of facies) as well as site specific data (proportions of facies). Spatial uncertainty within each scenario is integrated hierarchically through geostatistics (multiple-point statistics simulation of facies constrained by ERT data as soft data). 2) Validation of prior scenarios: we transform prior facies scenarios into resistivity distribution scenarios through forward and inverse modeling. The scenarios are validated by comparison with field ERT data. The comparison is made through distance calculation and projection into a low dimensional space to calculate the probability of each scenario given field ERT data. 3) Matching dynamical data: we use the probability perturbation method, within each scenario, to integrate hydraulic heads to our models. We account for scenario probabilities, calculated in 2, in determining how many models per scenario we have to consider for building a reliable posterior distribution. As an illustration, the method is applied on a field case study in an alluvial aquifer (Belgium) where we consider prior uncertainty related to the type of elements (gravel channels or bars) and to their size. This study shows the importance of considering the uncertainty of the prior in inverse problems as it has a strong influence on model predictions and decision-making problems. [less ▲]

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See detailAllergie moléculaire & Diagnostic in-vitro, Optimalisation de la prescription
GADISSEUR, Romy ULg

Conference (2014, December 17)

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See detailCancer du sein et retour au travail
Schippers, Nathalie ULg; Van Hoof, Elke; Mairiaux, Philippe ULg

Poster (2014, December 17)

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See detailDe l’intention au comportement physiquement actif chez les seniors : étude de l’influence des perceptions environnementales
Mouton, Alexandre ULg; Peels, Denise; Bolman, Catherine et al

Conference (2014, December 17)

The aim of this study was to analyse whether the perception of the local opportunities and the perception about the quality of the environment for physical activity (PA) mediate or moderate the intention ... [more ▼]

The aim of this study was to analyse whether the perception of the local opportunities and the perception about the quality of the environment for physical activity (PA) mediate or moderate the intention-behaviour relationship for PA in older adults. Data from two existing longitudinal studies (n = 149 and n = 1262) were used, assessing intention at baseline (T1), environmental variables at six months (T2) and PA behaviour at one year (T3). Results exposed a significant mediating role of the perception of the local PA opportunities (accounting for 15.5% in study 1 and 11.9% in study 2) and of the perception about the quality of the PA environment (accounting for respectively 19.6% and 18.2%) on the intention-behaviour relationship for PA. A moderation effect on the intention-behaviour relationship for PA was found in participants with a moderate perception of the local PA opportunities and in participants with a low or moderate perception about the quality of the environment for PA in both studies. This is the first longitudinal study that provides insight in the mediating and moderating role of environmental perceptions in the intention-behaviour relation for PA. Improving environmental perceptions could help future PA promotion interventions to bridge the intention-behaviour gap. [less ▲]

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See detailAnxiété et dépression chez l'enfant parentifié. Mieux identifier pour mieux intervenir.
Haxhe, Stéphanie ULg; Stassart, Martine ULg; D'Amore, Salvatore ULg

Poster (2014, December 16)

La parentification reste un phénomème mal connu. Pourtant, les conséquences pour l'enfant sont à prendre au sérieux.

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See detailVieillissement réussi: quel lien avec la qualité de vie des personnes âgées?
Missotten, Pierre ULg; Dupuis, Gilles; Adam, Stéphane ULg

Conference (2014, December 16)

Introduction: Selon des théories du « bien vieillir », un sujet doit 1) vivre dans le présent et se focaliser sur des informations émotionnelles positives si il a un sentiment de finitude élevé (FTP)1 ; 2 ... [more ▼]

Introduction: Selon des théories du « bien vieillir », un sujet doit 1) vivre dans le présent et se focaliser sur des informations émotionnelles positives si il a un sentiment de finitude élevé (FTP)1 ; 2) sélectionner des tâches prioritaires (SOC-Sélection) pour les pratiquer plus (SOC-Optimisation) tout en modifiant ses manières de procéder (SOC-Compensation)2 ; 3) réajuster ses buts en tenant compte des limitations de l’environnement ou du self (Flexibilité) et non essayer de changer la situation existante (Ténacité)3. Si on peut penser que ces théories sont liées à la qualité de vie (qdv), aucune recherche empirique n’a testé ces liens. Méthodologie: Cette étude investigue dans quelle mesure les opérationnalisations de trois théories du vieillissement réussi (SOC, FTP, Flexibilité-Ténacité) sont bien liées à la qualité de vie (WHOQOL-OLD et ISQV-65+ bref©) de personnes âgées de plus de 65 ans vivant à domicile (n=61). Résultats: Un faible sentiment de finitude (FTP), une tendance à investir son énergie dans les buts importants (SOC-Optimisation), à chercher des alternatives (SOC-Compensation) et une bonne capacité de réajustement des buts (Flexibilité) constituent des indices liés à une meilleure Qdv (tous r>.30 mais <.70; p<.05). Conclusion: Le vieillissement réussi est bien lié à la qdv: les deux concepts sont différents mais complémentaires. En regard de la théorie FTP, il est toutefois nécessaire de déterminer si la mauvaise qdv des sujets ayant un sentiment de finitude élevé est causée par le fait de ne pas vivre dans le présent et de ne pas s’orienter vers des buts émotionnels. 1. Carstensen, L. (1995). Current Directions in Psychological Science, 4, 151-156. 2. Baltes & Baltes (1990). In P. B. Baltes & M. M. Baltes (Eds.), Successful aging: Perspectives from the behavioral sciences (pp. 1–34). New York: Cambridge University Press. 3. Brandtstädter, J. & Renner, G. (1990). Psychology and Aging 5 (1), 58–67. [less ▲]

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See detail"Gérer ses émotions et agir : Pleine conscience et ACT" : Etude préliminaire de l'efficacité d'un groupe thérapeutique
Wagener, Aurélie ULg; Dierickx, Christophe; Herbeuval, Sandrine et al

Poster (2014, December 16)

Introduction : L’apprentissage de la gestion des émotions est une demande très fréquente en psychothérapie. Les techniques issues des programmes de pleine conscience et des thérapies d’acceptation et ... [more ▼]

Introduction : L’apprentissage de la gestion des émotions est une demande très fréquente en psychothérapie. Les techniques issues des programmes de pleine conscience et des thérapies d’acceptation et d’engagement ont notamment pour objectif de guider les clients dans cet apprentissage. Afin de répondre à cette demande, nous avons mis en place un groupe « Gérer ses émotions et agir : pleine conscience et ACT » et mené une recherche-action afin d’en tester l’efficacité. Méthodologie : Le cycle thérapeutique comportait 3 séances (3x3 heures) sur un délai de 6 semaines et 2 temps d’évaluation (avant la première séance [T0] et après la dernière [T1]). Les évaluations adminis-trées aux différents temps concernaient les données socio-démographiques, l’humeur, le niveau de pleine conscience, la flexibilité psychologique, le niveau d’engagement dans des activités, la mo-tivation et le sentiment d’auto-efficacité. Résultats : Cinq adultes (M âge = 37,46; ET = 7,96) ont participé à ce premier cycle. Les analyses prélimi-naires indiquent un effet significatif du facteur temps (N = 5). Ainsi, une augmentation du niveau d’engagement dans des activités (F(1) = 20,07, p = 0,01), de la motivation (F(1) = 15,00, p = 0,02) et du sentiment d’auto-efficacité (F(1) = 17,48, p = 0,02) est observée entre le T0 et le T1. Conclusion : Les résultats préliminaires semblent indiquer que les participants au groupe thérapeutique tirent des bénéfices de la participation à ce cycle thérapeutique. La récolte des données et la constitution d’un groupe contrôle se poursuivent. Les résultats seront plus longuement discutés lors du congrès. [less ▲]

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See detailEnvironmental changes in developing countries: from moving to trapped populations
Ozer, Pierre ULg; De Longueville, Florence ULg; Zickgraf, Caroline ULg et al

in Young Researchers Overseas' Day - Book of Abstracts (2014, December 16)

Over the last decades, environmental changes driven and/or compounded by population pressures and climate change have dramatically impacted human mobility, including population displacements or migration ... [more ▼]

Over the last decades, environmental changes driven and/or compounded by population pressures and climate change have dramatically impacted human mobility, including population displacements or migration, especially in developing countries. Slow onset degradation processes (aridification, desertification, wind and water erosion, deforestation, shoreline erosion, etc.) and sudden disasters (extreme climate events such as floods, droughts, storms, heat waves, etc.) have intensified since the 1950s in terms of frequency, intensity and duration, as well as in their socio-economic consequences. In the absence of an international objective to reduce greenhouse gas emissions, global warming and its wide range of negative impacts are not likely to be contained in the future [...] [less ▲]

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See detailHistoWeb - Toward a new learning ecology for histology
Vincke, Grégoire ULg; Marée, Raphaël ULg; Wehenkel, Louis ULg et al

Conference (2014, December 16)

HistoWeb targets the transformation of the professional tool Cytomineinto a comprehensive and innovative teaching platform, valuing the notions of learning ecology and new learning dimensions seeking for ... [more ▼]

HistoWeb targets the transformation of the professional tool Cytomineinto a comprehensive and innovative teaching platform, valuing the notions of learning ecology and new learning dimensions seeking for lifelong competencies. The poster was released at the Digital Learning round table, organized by the European Commission around H2020 funding instruments and call 2 "ICT-20 Technologies for better human learning" [less ▲]

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See detailProgramme de revalidation multidisciplinaire post-cancer du sein : analyse des bénéfices éventuels sur la fonction physique et la qualité de vie
LECLERC, Anne-France ULg; FOIDART-DESSALLE, Marguerite ULg; COUCKE, Philippe ULg et al

in AFPSA - 8e congrès francophone, Psychologie de la Santé - Evolutions sociales, innovations & politiques - Résumé des communications (2014, December 16)

Introduction : Le cancer du sein ainsi que ses traitements sont à l'origine de nombreux effets secondaires indésirables. L'objectif de l'étude est de déterminer les bénéfices éventuels, tant sur le plan ... [more ▼]

Introduction : Le cancer du sein ainsi que ses traitements sont à l'origine de nombreux effets secondaires indésirables. L'objectif de l'étude est de déterminer les bénéfices éventuels, tant sur le plan physique que psychologique, d’un programme de revalidation multidisciplinaire chez des femmes ayant été traitées pour un cancer du sein. Méthodologie : 122 patientes ont été recrutées, 61 faisant partie du groupe contrôle et 61 du groupe traité. Celui-ci a bénéficié d’une revalidation de trois mois comprenant un entraînement physique supervisé et diverses sessions psycho-éducatives. Les évaluations, effectuées avant et après la prise en charge, ont inclus des mesures anthropométriques et de composition corporelle, une évaluation des capacités fonctionnelles et différents questionnaires. Résultats : Au terme des trois mois, l’état de santé (qualité de vie), le rôle fonctionnel, l’état émotionnel et les fonctions physiques, cognitives et sociales s’améliorent significativement au sein du groupe traité. Cette observation s’applique également aux symptômes de fatigue, d'insomnie, de douleur, de dyspnée, de perte d'appétit, d’anxiété et de dépression ainsi qu'aux paramètres physiques obtenus par l'intermédiaire des évaluations fonctionnelles. Au sein du groupe contrôle, ces améliorations n’apparaissent pas et une augmentation significative de l'indice de masse corporelle et du pourcentage de graisse corporelle est observée. Conclusion : Cette étude préliminaire montre ainsi la faisabilité et les effets bénéfiques d’une prise en charge multidisciplinaire chez des femmes au terme de leurs traitements pour le cancer du sein. [less ▲]

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See detailRuzagayura, la grande famine du Rwanda moderne
Singiza, Dantès ULg

Poster (2014, December 16)

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See detailLe genre Erythrophleum (Fabaceae) en Afrique, un modèle pour l’étude des mécanismes de différenciation de niches climatiques
Gorel, Anaïs ULg; Duminil, Jérôme; Doucet, Jean-Louis ULg et al

Conference (2014, December 16)

Comprendre l’origine des patrons de diversité est un défi en écologie des communautés et en écologie évolutive, notamment dans le contexte du futur changement climatique. Ce poster aura deux objectifs : i ... [more ▼]

Comprendre l’origine des patrons de diversité est un défi en écologie des communautés et en écologie évolutive, notamment dans le contexte du futur changement climatique. Ce poster aura deux objectifs : i) présenter pourquoi le genre Erythrophleum en Afrique est un modèle d’étude idéal à la compréhension des mécanismes de différenciation de niche et de spéciation au sein d’une lignée d’arbre en région tropicale; ii) mettre en lumière les démarches statistiques et expérimentales permettant de valider et de comprendre ces mécanismes. Le genre Erythrophleum, largement distribué en Afrique, est représenté par quatre espèces d’arbre : E. ivorense, E. suaveolens, E. africanum et E. lasianthum. Ces espèces morphologiquement très proches, présentent des aires de distribution géographiques et climatiques adjacentes. Elles sont distribuées de façon parapatrique sur un gradient pluviométrique, du plus humide pour E. ivorense ou plus sec pour E. lasianthum. Ce mode de distribution apparent, combiné à des données issues d’études phylogénétiques, suggère un rôle majeur des gradients climatiques comme pilotes des différenciations spécifiques du genre et pourrait donc confirmer l’hypothèse du gradient écologique (« The ecological gradient hypothesis » suppose que des gradients environnementaux peuvent induire des spéciations parapatriques sans que les populations ne soient isolées géographiquement. Néanmoins, des études sur les niches climatiques et leurs degrés de conservatisme sont indispensables pour valider cette hypothèse. Aujourd’hui, ces études sont rendues plus aisées grâce au développement de nouvelles techniques de modélisation des niches environnementales (Species Distribution Model ou SDM) et de tests statistiques de quantification du conservatisme/divergence de niche (voire Warren et al., 2008). En complément de la modélisation des niches observées (c.à.d. niches réalisées selon la définition de Hutchison (1957)), il est intéressant de comprendre les stratégies fonctionnelles sous-jacentes aux différenciations de niche. Les différenciations de niche au sein des espèces du genre sont probablement issues d’une distinction de leurs stratégies d’utilisation des ressources (lumière/eau) et de leurs différents positionnements au sein du slow-fast continuum (sensu Reich, 2014). Cette hypothèse peut être testée par la mise en place d’expériences en milieu contrôlé mesurant les réponses des individus à des stress environnementaux. [less ▲]

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See detailComment conceptualiser les liens entre caractéristiques dépressives, processus psychologiques et niveau d'engagement dans des activités (activation versus évitement) ? Implications en psychologie clinique
Wagener, Aurélie ULg; Blairy, Sylvie ULg; Baeyens, Céline

Conference (2014, December 16)

Introduction : La dépression est caractérisée par une diminution du niveau d’activation comportementale (ACT) et par une augmentation du niveau d’évitement (EV). Selon les modèles théoriques de la dépres ... [more ▼]

Introduction : La dépression est caractérisée par une diminution du niveau d’activation comportementale (ACT) et par une augmentation du niveau d’évitement (EV). Selon les modèles théoriques de la dépres-sion, elle est également caractérisée par des biais dans six ensembles de processus psychologiques (PP): pensées négatives répétitives, stratégies de régulation émotionnelle, satisfaction environne-mentale, tendance à l’approche ou à l’inhibition, image de soi et clarté de l’identité. Cette étude a pour objectif de préciser l’influence des caractéristiques dépressives et des PP sur l’ACT et l’EV. Ces résultats seront intégrés au modèle élaboré par Kinderman en 2013 afin de construire un mo-dèle conceptuel de l’ensemble de ces liens, fondé empiriquement. Méthodologie : 477 adultes ( âge = 34, σ = 12), issus d’échantillons tout-venants ou fréquentant des services de psychiatrie, ont rempli une série de questionnaires évaluant plusieurs variables: données sociodé-mographiques, dépression, ACT, EV et les six ensembles de PP cités ci-dessus. Résultats : Le modèle testé via des analyses factorielles confirmatoires présente une adéquation raisonnable (RMSEA = 0,8). L’ACT est le plus influencée par des stratégies de régulation émotionnelle adap-tatives, des hauts niveaux de satisfaction environnementale et une image de soi positive. L’EV est le plus influencé par des pensées négatives répétitives, des stratégies de régulation émotionnelle non-adaptatives et de faibles niveaux de satisfaction environnementale. Conclusion : Les stratégies de régulation émotionnelle et la satisfaction environnementale sont les deux fac-teurs influençant le plus les niveaux d’ACT et celui d’EV. Les implications cliniques de ces résultats seront discutées. [less ▲]

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See detailUnstudied species of Lepilemur of Northwest Madagascar
Wilmet, Leslie ULg; Beudels-Jamar, Roseline C.; Schwitzer, Christoph et al

Poster (2014, December 16)

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See detailPhytochemical Study of Plants of Interest for Cosmetics in Mayotte
Saive, Matthew ULg; Fauconnier, Marie-Laure ULg; Danflous, Jean-Paul

Poster (2014, December 16)

This study takes place in a bigger project aiming to identify and to make an inventory of the French Pharmacopeia. Its aim is to identify plants or plant families regularly used in traditional cosmetics ... [more ▼]

This study takes place in a bigger project aiming to identify and to make an inventory of the French Pharmacopeia. Its aim is to identify plants or plant families regularly used in traditional cosmetics in Mayotte. In order to give a direction to the research, two technics where used. At first, the plants and their families used in the pharmacopeia of neighboring regions were inventoried using the literature. The resulting inventory was then compared with the flora of the Mahoran territory. The second technique was the realization of a semi-structured survey with people known for their plant-use knowledge in Mayotte. In order to have significant results, the ethnobotanical survey was done following Trotter & Logan’s protocol. (1986) According to that protocol, the gathered data has to be the following: common name, place of harvest, part used and the posology. Moreover the number of informant has to be big enough in order to integrate the data in several indicators such as: The informant agreement ration (IAR), the fidelity level (FL) and use value (UV). The number of informant was determined based on the population density of the different communes of the island. Another critical factor for this study is the correct identification of each sample. To achieve that when a sample was realized, it was taken twice. One for the analysis, the second sample was pressed and dried so as to enter a herbarium for identification. The last important step of this part of the study is the development of fast technics to establish the samples’ physiological activity. These test will give us qualitative information in order the isolate the plants that show a true potential. The targeted activities and tests being: - Anti-tyrosinase activity through an inhibition of tyrosinase test. - Anti-free-radicals activity through the DPPH test. - Anti-inflammatory activity through an inhibition of lipoxygenase an cyclooxygenase test The following steps of the study is the complete analysis of the physiologically active plants extracts in order to identify the active molecules. The end of the study will result in the creation of cosmetics originating from Mayotte’s flora. The way the cosmetics will be developed is thought so as it can be easily and durably done in Mayotte allowing this study to have a positive impact on the development of the island. [less ▲]

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See detailCorporate Board Attributes and Conditional Accounting Conservatism Evidence from French Firms
Boussaid, Nabila ULg; Sougné, Danielle ULg; Hamza, Taher

Conference (2014, December 16)

In this paper we investigate the relationship between boards of directors’ attributes and conditional accounting conservatism in the French context. Using a pooled regression model to evaluate this ... [more ▼]

In this paper we investigate the relationship between boards of directors’ attributes and conditional accounting conservatism in the French context. Using a pooled regression model to evaluate this relationship for the period 2009-2012, our empirical results can be summarized as follows. Firstly, greater board activity encourages more conservative reporting in financial statements. Secondly, greater board size diminishes conditional accounting conservatism. Lastly, there is a positive relationship between gender diversity and conservatism. To ensure robustness we have calculated our results usingalternative measures of accounting conservatism, namely time series and accrual-based measures in addition to asymmetric timeliness of earnings. These findings suggest that boards of directors’ attributes are an important factor in determining the financial reporting quality of French firms. [less ▲]

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See detailBiostratigraphic and chemostratigraphic constraints of the Mbuji-Mayi Supergroup, Democratic Republic of Congo
Kabamba Baludikay, Blaise ULg; Bekker, Andrey; Baudet, Daniel et al

Poster (2014, December 16)

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See detailPersonnel soignant et âgisme: quelles conséquences cliniques ?
Schroyen, Sarah ULg; Missotten, Pierre ULg; JERUSALEM, Guy ULg et al

Conference (2014, December 16)

Introduction : Le cancer est un problème de santé majeur dont l’âge constitue un facteur de risque avéré1. Paradoxalement, les personnes âgées souffrant d’un cancer sont souvent exclues des essais ... [more ▼]

Introduction : Le cancer est un problème de santé majeur dont l’âge constitue un facteur de risque avéré1. Paradoxalement, les personnes âgées souffrant d’un cancer sont souvent exclues des essais cliniques et sous-traitées comparativement à des patients plus jeunes1. Un élément explicateur de ces constats est la stigmatisation liée à l’âge² (c.à.d. nos stéréotypes liés à l’âge, et donc l’âgisme). Méthodologie : Nous avons interrogé 76 infirmiers (-ères) travaillant en oncologie. A l’aide de fiches cli-niques, nous leur avons demandé s’ils encourageraient à des patients un traitement expérimental (40 vs 70 ans), une chimiothérapie ou une reconstruction mammaire (35, 55 ou 75 ans), tout paramètres cliniques étant équivalents par ailleurs. Résultats : L’encouragement d’un traitement expérimental est moins fréquente pour une personne de 70 ans comparativement à une personne de 40 ans (p<.001). De plus, le personnel soignant encourage moins fréquemment une chimiothérapie pour une personne de 75 ans comparativement aux per-sonnes de 55 et 35 ans (p<.001). Au niveau de la reconstruction mammaire, une différence est vi-sible dès 55 ans : la reconstruction mammaire est moins encouragée pour une personne de cet âge par rapport à une personne de 35 ans (p=.02) et encore moins encouragée pour une personne de 75 ans comparativement à une personne de 55 ans (p<.001). L’âge des infirmiers (M = 35.8) a une influence sur ces encouragement : plus ils sont âgés, plus ils encouragent le traitement chimiothérapeutique d’une per-sonne de 75 ans (p = .005) de même que le traitement expérimental pour une personne de 70 ans (p = .01). Conclusion : A l’instar d’autres études3, 4, nous confirmons que tant du point de vue esthétique que cura-tif, le personnel médical encourage moins fréquemment un traitement aux patients plus âgés compa-rativement aux plus jeunes. 1. Hurria, A., et al. (2012). J Natl Compr Canc Netw, 10, 162-209. 2. Penson, R. T., et al. (2004). The Oncologist, 9, 343-352. 3. Madan, A. K., et al. (2001). Acad Med, 76, 282-284. 4. Protière, C., et al. (2010). Crit Rev Oncol Hematol, 75, 138-150. [less ▲]

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See detailVariability of Jupiter’s Main Auroral Emission in Response to Magnetospheric Hot Plasma Injections
Badman, Sarah; Bonfond, Bertrand ULg; Fujimoto, Masaki et al

Poster (2014, December 16)

We present observations of Jupiter’s FUV aurora acquired by the Hubble Space Telescope during a two-week interval in January 2014. The variability of the main auroral emission was studied using ... [more ▼]

We present observations of Jupiter’s FUV aurora acquired by the Hubble Space Telescope during a two-week interval in January 2014. The variability of the main auroral emission was studied using latitudinal profiles of intensity. The main oval intensity was found to be reduced when bright patches of diffuse emission were present at lower latitudes. These low latitude emissions are interpreted as the signatures of hot plasma injections from the outer magnetosphere, a process which has previously been related to interchange between the flux tubes from the outer magnetosphere and outward-moving flux tubes loaded with iogenic plasma. The main emission was also observed to broaden and shift in latitude, and occasionally display a double peak structure. These observations are interpreted with reference to the expected changes in auroral field-aligned currents associated with the replacement of the radially-stretched, mass-loaded flux tubes in the middle magnetosphere by more dipolar flux tubes containing rarefied hot plasma. [less ▲]

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See detailMulti-wavelength observations of Jupiter's aurora coordinated with Hisaki and other space telescopes
Kimura, Tomoki; Badman, Sarah; Tao, Chihiro et al

Conference (2014, December 15)

From January to April 2014, two observing campaigns by multi-wavelength remote sensing from X-ray to radio were performed to uncover energy transport process in Jupiter’s plasma environment using space ... [more ▼]

From January to April 2014, two observing campaigns by multi-wavelength remote sensing from X-ray to radio were performed to uncover energy transport process in Jupiter’s plasma environment using space telescopes and ground-based facilities. These campaigns were triggered by the new Hisaki spacecraft launched in September 2013, which is an extremely ultraviolet (EUV) space telescope of JAXA designed for planetary observations. In the first campaign in January, Hubble Space Telescope (HST) made imaging of far ultraviolet (FUV) aurora with a high special resolution (0.08”) through two weeks while Hisaki continuously monitored aurora and plasma torus emissions in EUV wavelength with a high temporal resolution (1 min<). We discovered new magnetospheric activities from the campaign data: e.g., internally-driven type auroral brightening associated with hot plasma injection, and plasma and electromagnetic filed modulations in the inner magnetosphere externally driven by the solar wind modulation. The second campaign in April was performed by Chandra X-ray Observatory (CXO), XMM newton, and Suzaku satellite simultaneously with Hisaki. Relativistic auroral accelerations in the polar region and hot plasma in the inner magnetosphere were captured by the X-ray space telescopes simultaneously with EUV monitoring of aurora and plasma torus. Auroral intensity in EUV indicated a clear periodicity of 45 minutes whereas the periodicity was not evident in X-ray intensity although previous observations by CXO indicated clear 40-minute periodicity in the polar cap X-ray aurora. In this presentation, we show remarkable scientific results obtained these campaigns. [less ▲]

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See detailPerception du bien-être chez les étudiants de l’Université de Liège
Cloes, Marc ULg; Etienne, Anne-Marie ULg; Maslah, Olfa et al

Conference (2014, December 15)

This study is focused on the analysis of the wellness perception of a representative sample of students of the University of Liege. Findings confirm those of the literature as males at students who ... [more ▼]

This study is focused on the analysis of the wellness perception of a representative sample of students of the University of Liege. Findings confirm those of the literature as males at students who consider to be physically active have higher scores of wellness. The study reveals also that students who are still leaving with their parents have higher scores of wellness. [less ▲]

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See detailTiming pubertaire perçu et conduites à risque et déviantes à l’adolescence
Glowacz, Fabienne ULg

Conference (2014, December 15)

Le processus de maturation pubertaire a des répercussions sur la représentation de soi et sur l’établissement des relations sociales à l’adolescence. La poussée staturo-pondérale, comme l’atteinte de la ... [more ▼]

Le processus de maturation pubertaire a des répercussions sur la représentation de soi et sur l’établissement des relations sociales à l’adolescence. La poussée staturo-pondérale, comme l’atteinte de la maturité sexuelle, ne se produisent pas en même temps chez tous les adolescents. Cette variabilité interindividuelle a des effets au niveau de la construction identitaire, de la perception de soi et du rapport aux autres. Nos recherches se centrent sur les liens entre le timing pubertaire et l’engagement dans des comportements délictueux, usage de drogue, conduites sexuelles et autres comportements exploratoires et déviants. Notre recherche porte sur un échantillon de 316 adolescents âgés de 13 à 18 ans, et un échantillon de 47 adolescents ayant commis une agression sexuelle. L’estime de soi, l’agressivité, les relations aux pairs, les comportements sexuels, les conduites délinquantes et le timing pubertaire perçu (TPP) ont été évalués pour chaque sujet. Des analyses comparatives entre les types de TPP (avancé-retardé-normal) ont permis d’analyser l’impact de la perception par l’adolescent d’une désynchronisation de son timing pubertaire au niveau des dimensions étudiées et de l’adoption de conduites à risque et déviantes. Nos résultats montrent une surreprésentation de « pubertés» décalées (avancées ou retardées) chez les adolescents engagés dans des conduites à risques et des conduites déviantes au niveau de la sexualité. Ils seront discutés dans une perspective bio-psychosociale à partir des théories développementales. [less ▲]

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See detailRelation entre fatigue et travail chez des patients atteints de sclérose en plaques
DELRUE, Gaël ULg; Blavier, Adelaïde ULg; Hennen, Julie et al

Poster (2014, December 15)

Fatigue is one of the most frequent symptom in multiple sclerosis patients (MS patients). We showed significant correlations between fatigue levels and difficulties encountered by our patients at work ... [more ▼]

Fatigue is one of the most frequent symptom in multiple sclerosis patients (MS patients). We showed significant correlations between fatigue levels and difficulties encountered by our patients at work evaluated through a specific questionnaire we already validated . This complaint must be carefully managed by professionnals in order to help the patients cope with it in the best way for maintaining work situation. [less ▲]

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See detailNew technologies in conservation: monitoring African wildlife with UAS
Linchant, Julie ULg; Semeki, Jean; Lejeune, Philippe ULg et al

Conference (2014, December 13)

In the vast protected areas of Africa, traditional wildlife surveys performed by plane or foot are logistically difficult to implement due to the lack of means and appropriate materials. Moreover, the ... [more ▼]

In the vast protected areas of Africa, traditional wildlife surveys performed by plane or foot are logistically difficult to implement due to the lack of means and appropriate materials. Moreover, the possibilities of encountering poachers in the field pose a serious risk to the monitoring teams. Over the last decade, civilian UAS (Unmanned Aerial Systems) boomed in natural resource monitoring. One of the biggest challenges of the UAS is to replace traditional wildlife censuses for the application of wildlife conservation. Parameters have to be approached in a different way than before. We performed test flights in the open savannah of the Garamba National Park during the wet season using the Falcon Unmanned UAS. Both photos (Sony Nex7, 24Mp) and videos, including thermal infrared videos (Tamarisk 640x480), have been used. Flight altitude ranged from 50 to 200m and pictures showed that animals can be effectively detected at 100m. We spotted elephants, hippopotamus and buffaloes as well as other smaller species such as hartebeests, kobs and warthogs. Thermal videos gave medium quality results during the day due to the heat but performed well during the night. The limited range and endurance of the UAS suggest a rethink of the usual census protocols. We therefore tested new flight plans in a rosette shape to take advantage of the higher points in the park, with transects having the length of the maximal range. Twelve transects of 10km can be covered in half a day with pictures covering a 15.6km² area. Human activities could also be detected. Pictures showed areas burned by poachers and the thermal infrared camera allows the detection of fires from a high altitude. Future developments need to be investigated such as automatic detection to review the huge amount of data collected and statistical methods must be adapted to those challenging situations. [less ▲]

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See detailMarty and the 4th Logical Investigation: What is the disagreement really about?
Seron, Denis ULg

Conference (2014, December 13)

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See detailBelgien- und Deutschlandbilder als Spiegel der ostbelgischen Nachkriegsgesellschaft
Brüll, Christoph ULg

Conference (2014, December 13)

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