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See detailEvaluation of the relationships between characteristics of the vertebral column of different cetaceans and their ecology: A preliminary study.
Gillet, Amandine ULg; Ninane, Catherine ULg; Remy, François ULg et al

Poster (2014, April)

Ecomorphology is the study of the relationships between functional design and the environment. One of its aims is to understand how the environmental factors can constraint the performance of an organism ... [more ▼]

Ecomorphology is the study of the relationships between functional design and the environment. One of its aims is to understand how the environmental factors can constraint the performance of an organism or act on its phenotype. Different studies have already showed in different cetaceans that the number and shape of vertebrae can reflect the stiffness of the body and consequently can impact their swimming mode. The aim of this preliminary study is to establish relationships between characteristics of the vertebral column of different cetaceans and their ecology. To this purpose, we have studied meristic and morphometric data on the vertebrae (centrum length, height and width, neural and haemal spine height and the transverse process length) of different species of mysticetes and odontocetes coming from the Aquarium-Museum of Liège and Royal Institute of Natural Sciences of Bruxelles. Preliminary results showed the distinction of three morphotypes: firstly, the active, cruising, fast swimmers with rigid body, secondly, the maneuverers, slow swimmers with flexible body and thirdly, the steady swimmers. [less ▲]

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See detailDynamics of a Strongly Nonlinear Spacecraft Structure Part I: Experimental Identification
Noël, Jean-Philippe ULg; Renson, Ludovic ULg; Kerschen, Gaëtan ULg

in Proceedings of the 13th European Conference on Spacecraft Structures, Materials and Environmental Testing (2014, April)

The present paper addresses the identification of a real-life spacecraft structure possessing a strongly nonlinear component with multiple mechanical stops. The complete identification procedure, from ... [more ▼]

The present paper addresses the identification of a real-life spacecraft structure possessing a strongly nonlinear component with multiple mechanical stops. The complete identification procedure, from nonlinearity detection and characterization to parameter estimation, is carried out based upon experimental sine-sweep data collected during a classical spacecraft qualification campaign. [less ▲]

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See detailHepatitis E virus infection in suids and cervids in southern Belgium
Thiry, Damien ULg; Mauroy, Axel ULg; Fett, Thomas ULg et al

Conference (2014, April)

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See detailIntergenerational conflict in the first trilogy of Nuruddin Farah
Bajou, Issam ULg

Conference (2014, April)

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See detailModelling the Congo basin ecosystems with a dynamic vegetation model
Dury, Marie ULg; Hambuckers, Alain ULg; Trolliet, Franck ULg et al

Poster (2014, April)

The scarcity of field observations in some parts of the world makes difficult a deep understanding of some ecosystems such as humid tropical forests in Central Africa. Therefore, modelling tools are ... [more ▼]

The scarcity of field observations in some parts of the world makes difficult a deep understanding of some ecosystems such as humid tropical forests in Central Africa. Therefore, modelling tools are interesting alternatives to study those regions even if the lack of data often prevents sharp calibration and validation of the model projections. Dynamic vegetation models (DVMs) are process-based models that simulate shifts in potential vegetation and its associated biogeochemical and hydrological cycles in response to climate. Initially run at the global scale, DVMs can be run at any spatial scale provided that climate and soil data are available. In the framework of the BIOSERF project (“Sustainability of tropical forest biodiversity and services under climate and human pressure”), we use and adapt the CARAIB dynamic vegetation model (Dury et al., iForest - Biogeosciences and Forestry, 4:82-99, 2011) to study the Congo basin vegetation dynamics. The field campaigns have notably allowed the refinement of the vegetation representation from plant functional types (PFTs) to individual species through the collection of parameters such as the specific leaf area or the leaf C:N ratio of common tropical tree species and the location of their present-day occurrences from literature and available database. Here, we test the model ability to reproduce the present spatial and temporal variations of carbon stocks (e.g. biomass, soil carbon) and fluxes (e.g. gross and net primary productivities (GPP and NPP), net ecosystem production (NEP)) as well as the observed distribution of the studied species over the Congo basin. In the lack of abundant and long-term measurements, we compare model results with time series of remote sensing products (e.g. vegetation leaf area index (LAI), GPP and NPP). Several sensitivity tests are presented: we assess consecutively the impacts of the level at which the vegetation is simulated (PFTs or species), the spatial resolution and the initial land cover (potential or human-induced). First, we show simulations over the whole Congo basin at a 0.5◦ spatial resolution. Then, we present high-resolution simulations (1 km) carried out over different areas of the Congo basin, notably the DRC part of the WWF Lake Tele – Lake Tumba Landscape. Studied in the BIOSERF project, this area is characterized by a forest-savannah mosaic but also by swamp and flooded forest. In addition, forward transient projections of the model driven with the outputs of about thirty global cli- mate models (GCMs) from the new Coupled Model Intercomparison Project Phase 5 (CMIP5) will permit to outline the likely response of carbon pools to changing climate over the Congo basin during the 21th century. [less ▲]

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See detailEccentric training for elbow hypermobility
Kaux, Jean-François ULg; Delvaux, François ULg; Forthomme, Bénédicte ULg et al

in British Journal of Sports Medicine (2014, April), 48(7), 154

Background: Patients with hypermobility suffer from joints problems and chronic pain is the most frequently reported symptom. Objective: Eccentric muscle strengthening could be very important to protect ... [more ▼]

Background: Patients with hypermobility suffer from joints problems and chronic pain is the most frequently reported symptom. Objective: Eccentric muscle strengthening could be very important to protect hypermobile joints. Design: Case report. Patient: A girl (16 y.o.) affected by an Ehler-Danlos syndrome presented pain in the right elbow and the right wrist after a season of tennis. Interventions: Her training consisted of wrist prono-supination and flexion-extension muscle group reinforcement and proprioceptive training. To protect the wrist against excessive load, the eccentric strengthening exercises of prono-supinator and flexor-extensor muscles of elbow and wrist were undertaken gradually, at increasing speeds within a limited range of motion in flexion and extension, on an isokinetic device after an evaluation. She was also given an orthesis restricting the joint range of motion of the wrist. Main outcome measurements: The evaluation was made by isokinetic evaluation, visual analog scale and MOS-SF36 questionnaire before and after training. Results: The patient rapidly noted a decrease in pain and an increase in the stability of her right arm even when playing tennis. Isokinetic evaluation objectified a significant improvement in maximal torque in flexion-extension muscles of the right elbow. She was also given individualized home exercises. Conclusions: The goal of this eccentric training is to avoid hypermobility by using the muscles as a protective brake in the control of joint positioning. Muscles can be reinforced in eccentric mode with starting position at the maximum length of these muscles when unstreched. The exercises can be carried out safely on an isokinetic device, at slow speed and limited range of joint motion to avoid risk of luxation. Thus, in this case report, the eccentric exercises using an isokinetic device were effective to safely reinforce the muscles as a protective brake for joint hypermobility and prevent pain during practicing tennis. [less ▲]

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See detailThe Tale of Sinuhe: History of a literary text
Winand, Jean ULg

in Hays, Harold; Feder, Frank; Morenz, Ludwig (Eds.) Interpretations of Sinuhe (2014, April)

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See detailvCCL2, the third agonist ligand for the -arrestin-biased chemokine receptor CXCR7
Szpakowska, Martyna ULg; Derj, Anouar ULg; Counson, Manuel et al

Poster (2014, April)

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See detailTwo biomarkers for the screening of cardiac risk among runners ?
LE GOFF, Caroline ULg; Kaux, Jean-François ULg; Fillet, Marianne ULg et al

in British Journal of Sports Medicine (2014, April), 48(7), 174

Background Heart-type fatty acid-binding protein (H-FABP) is a low molecular weight protein involved in the intracellular uptake and buffering of long chain fatty in the myocardium. Troponin T is a ... [more ▼]

Background Heart-type fatty acid-binding protein (H-FABP) is a low molecular weight protein involved in the intracellular uptake and buffering of long chain fatty in the myocardium. Troponin T is a component of the contractile apparatus of the striated musculature. Both are early markers for acute coronary syndrome. Objective The aim of our study was to compare the results obtained with the H-FABP and the highly sensitive cardiac troponins (hsTnT) and to test their cardiospecificity in healthy runners. Design Prospective, cohort study. Setting Amateur marathon runners. Patients 23 runners (marathon) were enrolled. Interventions We drowned blood samples at three times: just before (T0), just after (T1), and three hours after the end of the race (T3). Main outcome measurements H-FABP and hs-TnT were performed according to the manufacturer's instructions. A linear regression was calculated to observe if there is any correlation between the two biomarkers. Values above the 95th percentile for H-FABP (2.5 ng/mL) and the 99th percentile for hsTnT (14 ng/L) were considered as positive. Results At T0, none of the subjects were positive for hsTnT but 35% were positive for H-FABP; at T1, 83% for hsTnT and 100% for H-FABP; at T3, 83% for hsTnT and 96% for H-FABP. At T0, the regression equation was H-FABP T0=3.9454–0.1001×hsTnT T0; at T1: H-FABP T1=51.838–1.7026×hsTnT T1; at T3: H-FABP T3=47.977–1.6193×hsTnT T3. No correlation was observed between the 2 biomarkers. Conclusion We observed a significant increase of H-FABP and hsTnT in runners. These markers are independent to each other. These values could biologically correspond to a heart ischemia. These biomarkers could be helpful for the screening of cardiac risk among runners. [less ▲]

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See detailINFLUENCE OF WHEY PROTEIN DENATURATION ON ADHERENCE
Toure, Yetioman ULg; Rouxhet, G. Paul; Dupont-Gillain, C. Christine et al

Conference (2014, April)

This work reports on the influence of -lactoglobulin (β-LGB) and of its denaturation on the adherence of quartz particles, taken as a model of particulate soil, on stainless steel AISI 304 with mirror ... [more ▼]

This work reports on the influence of -lactoglobulin (β-LGB) and of its denaturation on the adherence of quartz particles, taken as a model of particulate soil, on stainless steel AISI 304 with mirror finish. The substrate was soiled with quartz suspensions in water or in β-LGB solutions as such or previously heated at 75°C, and dried at room temperature or in an oven at 75°C. Cleanability was evaluated after exposure to water in a radial flow chamber. Auxiliary characterizations were the surface tension and protein concentration of the solution, surface analysis of the substrate by X-ray photoelectron spectroscopy (XPS) and contact angle measurements. The contact of stainless steel with -LGB led to adsorption of the protein, which dominated the composition of the organic layer with respect to contaminants initially present, and was not markedly desorbed upon rinsing. The presence of β-LGB at the quartz particle/substrate interface slightly increased the adherence, which was further increased when the protein was denatured. On the other hand, denaturation of -LGB enhanced its surfactant effect at the water/air interface. Comparison with systems investigated before suggests that the influence of protein via droplet spreading and soiling particles aggregation may be of minor importance compared to direct effects on the substrate/quartz interface. Stainless steel does not behave as a hydrophilic substrate owing to its surface contamination with organic compounds. It appears suitable to examine the influence of the initial surface state of stainless steel on its behavior regarding soiling and cleaning. [less ▲]

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See detailModelling the Congo basin ecosystems with a dynamic vegetation model
Dury, Marie ULg; Hambuckers, Alain ULg; Trolliet, Franck ULg et al

Conference (2014, April)

The scarcity of field observations in some parts of the world makes difficult a deep understanding of some ecosystems such as humid tropical forests in Central Africa. Therefore, modelling tools are ... [more ▼]

The scarcity of field observations in some parts of the world makes difficult a deep understanding of some ecosystems such as humid tropical forests in Central Africa. Therefore, modelling tools are interesting alternatives to study those regions even if the lack of data often prevents sharp calibration and validation of the model projections. Dynamic vegetation models (DVMs) are process-based models that simulate shifts in potential vegetation and its associated biogeochemical and hydrological cycles in response to climate. Initially run at the global scale, DVMs can be run at any spatial scale provided that climate and soil data are available. In the framework of the BIOSERF project (“Sustainability of tropical forest biodiversity and services under climate and human pressure”), we use and adapt the CARAIB dynamic vegetation model (Dury et al., iForest - Biogeosciences and Forestry, 4:82-99, 2011) to study the Congo basin vegetation dynamics. The field campaigns have notably allowed the refinement of the vegetation representation from plant functional types (PFTs) to individual species through the collection of parameters such as the specific leaf area or the leaf C:N ratio of common tropical tree species and the location of their present-day occurrences from literature and available database. Here, we test the model ability to reproduce the present spatial and temporal variations of carbon stocks (e.g. biomass, soil carbon) and fluxes (e.g. gross and net primary productivities (GPP and NPP), net ecosystem production (NEP)) as well as the observed distribution of the studied species over the Congo basin. In the lack of abundant and long-term measurements, we compare model results with time series of remote sensing products (e.g. vegetation leaf area index (LAI), GPP and NPP). Several sensitivity tests are presented: we assess consecutively the impacts of the level at which the vegetation is simulated (PFTs or species), the spatial resolution and the initial land cover (potential or human-induced). First, we show simulations over the whole Congo basin at a 0.5◦ spatial resolution. Then, we present high-resolution simulations (1 km) carried out over different areas of the Congo basin, notably the DRC part of the WWF Lake Tele – Lake Tumba Landscape. Studied in the BIOSERF project, this area is characterized by a forest-savannah mosaic but also by swamp and flooded forest. In addition, forward transient projections of the model driven with the outputs of about thirty global cli- mate models (GCMs) from the new Coupled Model Intercomparison Project Phase 5 (CMIP5) will permit to outline the likely response of carbon pools to changing climate over the Congo basin during the 21th century. [less ▲]

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See detailQuasi-loss of nationality - a new concept or a non-issue?
Wautelet, Patrick ULg; de Groot, Gerard-René

Conference (2014, April)

Quasi-loss of nationality : “is this a loss I see before me?” Prof. Gerard-René de Groot (University Maastricht, Aruba and Hasselt) Prof. Patrick Wautelet (University Liège) This paper focuses on ... [more ▼]

Quasi-loss of nationality : “is this a loss I see before me?” Prof. Gerard-René de Groot (University Maastricht, Aruba and Hasselt) Prof. Patrick Wautelet (University Liège) This paper focuses on situations in which a person is said never to have had the nationality of a country, even though (s)he assumed (and in many cases the authorities of the country concerned shared that assumption) that (s)he possessed that nationality. Contrary to situations of loss of nationality, where something is taken away which existed, those situations involve a decision that a nationality was never acquired. This subtle distinction between loss and non-acquisition will in most cases be lost on the persons concerned who will experience the decision as a loss of nationality. The central question of this paper is, whether these situations of quasi-loss differ so much from loss cases, that they have to be treated differently. If and insofar as this would be the case, a next question is, whether a person should under certain circumstances be protected against quasi-loss of her or his nationality. In order to answer these questions, the paper will first attempt to map out situations of quasi-loss in EU member states. Typical cases will be described in which a person did never acquire the nationality of the country, although (s)he was considered as a national before certain facts happened. Drawing on this taxonomy, the paper will offer a first attempt at uncovering whether national, European and international law offer some protection, and if yes, to which extent, for situations of quasi-loss. This paper will conclude with outlining best practices which Member States should comply with in handling quasi-loss situations. [less ▲]

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See detailCardiac troponins and natriuretic peptides in runners: useful for cardiac risk screening ?
LE GOFF, Caroline ULg; Kaux, Jean-François ULg; Fillet, Marianne ULg et al

in British Journal of Sports Medicine (2014, April), 48(7), 173

Background Cardiac troponins (cTn) are considered as the best biomarkers for detection of myocardial cell injury and NT-proBNP as the best for the cardiac insufficiency. Objective Our aim was to compare ... [more ▼]

Background Cardiac troponins (cTn) are considered as the best biomarkers for detection of myocardial cell injury and NT-proBNP as the best for the cardiac insufficiency. Objective Our aim was to compare cTnT and NT-proBNP levels before and after the stress tests, in sportive subjects. Design Prospective, cohort study. Setting Amateur marathon runners and ultrarunners. Patients 28 subjects (26 men, 42.5±11 yrs) were enrolled. Interventions Subjects ran the Maasmarathon (42.195 kilometers) and 33 subjects (33 men, 45.7±9.3 yrs) ran the Ultratour of Liège (Belgium; 67 km). All subjects gave their informed consent. We took blood sample before (T0), just after (T1) and 3 hours after the race (T3). Main outcome measurements cTnT concentrations were measured by high sensitive methods (hsTnT, Roche Diagnostics) on heparin plasma. The NT-proBNP was also determined with the kit Roche on heparin plasma. All statistical analyses were performed using Medcalc version 8.1 for Windows. P-value <.01 was regarded as statistically significant. Results A significant difference between hsTnT concentrations at T0 and T1 (P<.001), and between T0 and T3 (P<.001) for NT-proBNP have been observed, but not between T1 and T3. This observation appeared only after a strenuous exercise. However, up to now this type of exercise is not reproducible easily in a laboratory. Moreover, nobody knows if these observations would have cardiac consequences at long terms. Conclusion Measurement of cardiac troponins by high sensitive methods allows detecting significant release of biomarkers from the heart during exercise. The value of NT-proBNP are also significant but less than TnThs. We think that the TnThs could be an interesting tool in the future to help sport medicine to detect risk of developing a cardiac problem in the future or a sudden death. [less ▲]

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See detailFLUSHING PORCINE DCD LIVERS WITH CYCLO-DEXTRIN COMPLEXED CURCUMIN DOES NOT REDUCE ISCHEMIA REPERFUSION INJURY
MEURISSE, Nicolas ULg; PARKINNEN, J; CEULEMANS, L et al

Poster (2014, April)

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See detailA geochemical and petrological study of the Late Cretaceous banatites from the Apuseni Mountains, Romania
Vander Auwera, Jacqueline ULg; Berza, Tudor; Dupont, Alain et al

Poster (2014, April)

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See detailLocal ensemble assimilation scheme with global constraints and conservation
Barth, Alexander ULg; Yan, Yajing ULg; Canter, Martin ULg et al

Poster (2014, April)

Ensemble assimilation schemes applied in their original, global formulation have no problem in respecting linear conservation properties if the ensemble perturbations are setup accordingly. For realistic ... [more ▼]

Ensemble assimilation schemes applied in their original, global formulation have no problem in respecting linear conservation properties if the ensemble perturbations are setup accordingly. For realistic ocean systems, only a relatively small number of ensemble members can be calculated. A localization of the ensemble increment is thus necessary to filter out spurious long-range correlations. However, the conservation of the global property will be lost if the assimilation is performed locally since the conservation requires a coupling between model grid points, which is filtered out by the localization. In the ocean, the distribution of observations is highly inhomogeneous. Systematic errors of the observed parts of the ocean state can lead to spurious systematic adjustments of the non-observed part of the ocean state due to data assimilation. As a result, global properties which should be conserved, increase or decrease in long-term simulations. We propose an assimilation scheme (with stochastic or deterministic analysis steps) which is formulated globally (i.e. for the whole state vector) but where spurious long-range correlations can be filtered out. The scheme can thus be used to enforce global conservation properties and non-local observation operators. Both aspects are indeed linked since one can introduce the global conservation as a weak constraint by using a global observation operator. The conserved property becomes thus an observed value. The proposed scheme is tested with the Kuramoto-Sivashinsky model which is conservative. The benefit compared to the traditional covariance localization scheme (with an ad-hoc step enforcing conservation) where observations are assimilated sequentially is shown. The assimilation scheme is suitable to be implemented on parallel computers where the number of available computing cores is a multiple of the ensemble size. [less ▲]

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See detailEARLY ALLOGRAFT DYSFUNCTION DECREASES PATIENT SURVIVAL AFTER LIVER TRANSPLANTATION
MEURISSE, Nicolas ULg; FIEUWS, S; JOCHMANS, I et al

Poster (2014, April)

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See detailCharacterization of printed circuit boards from scrap printers
Silvas, Flávia; de Moraes, Viviane; Bortolini, Guilherme et al

in Yurko, James; Zhang, Lifeng; Allanore, Antoine (Eds.) Proceedings TMS 2014 143rd ANNUAL MEETING & EXHIBITION (2014, April)

Printed circuit boards (PCB) are particularly problematic to recycle because of the heterogeneous mix of organic materials, metals, and glass fiber. PCBs are found in almost every electroelectronic ... [more ▼]

Printed circuit boards (PCB) are particularly problematic to recycle because of the heterogeneous mix of organic materials, metals, and glass fiber. PCBs are found in almost every electroelectronic equipment and their recycling process involves a pre-treatment to separate the products which contain targeted metals. In this work, a physical processing involving sequential shredding and hammer milling were used to obtain a comminuted sample from scrap printers PCBs. The thus prepared sample was analyzed for particle size distribution and by optical microscopy as well was subjected to pyrolysis, leachabilty and chemical composition determination by XRF. The metals concentration was determined by ICP and AAS. The PCBs have been also analyzed by SEM-EDS (micro-analysis and X-ray mapping). The results show that the studied PCBs are lead free, multilayer with 4 copper layers, have 45% of metals and the copper is present in significantly higher concentration than the rest of the metals. [less ▲]

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See detailIn vitro culture of seal muscle-derived satellite cells
Freichels, Astrid ULg; Baise, Etienne ULg; Jauniaux, Thierry ULg et al

Poster (2014, April)

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See detailData normalization and supervised learning to assess the condition of patients with multiple sclerosis based on gait analysis
Azrour, Samir ULg; Pierard, Sébastien ULg; Geurts, Pierre ULg et al

in European Symposium on Artificial Neural Networks, Computational Intelligence and Machine Learning (ESANN) (2014, April)

Gait impairment is considered as an important feature of disability in multiple sclerosis but its evaluation in the clinical routine remains limited. In this paper, we assess, by means of supervised ... [more ▼]

Gait impairment is considered as an important feature of disability in multiple sclerosis but its evaluation in the clinical routine remains limited. In this paper, we assess, by means of supervised learning, the condition of patients with multiple sclerosis based on their gait descriptors obtained with a gait analysis system. As the morphological characteristics of individuals influence their gait while being in first approximation independent of the disease level, an original strategy of data normalization with respect to these characteristics is described and applied beforehand in order to obtain more reliable predictions. In addition, we explain how we address the problem of missing data which is a common issue in the field of clinical evaluation. Results show that, based on machine learning combined to the proposed data handling techniques, we can predict a score highly correlated with the condition of patients. [less ▲]

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See detailNeutralizing properties of peptides derived from CXCR4 extracellular loops towards CXCL12 bidnig and HIV-1 infection
Szpakowska, Martyna ULg; Fievez, Virginie; Counson, Manuel et al

Poster (2014, April)

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See detailA new methodological approach for error distributions selection in Finance
Hambuckers, julien ULg; Heuchenne, Cédric ULg

Conference (2014, April)

In this article, we propose a robust methodology to select the most appropriate error distribution candidate, in a classical multiplicative heteroscedastic model. In a first step, unlike to the ... [more ▼]

In this article, we propose a robust methodology to select the most appropriate error distribution candidate, in a classical multiplicative heteroscedastic model. In a first step, unlike to the traditional approach, we don't use any GARCH-type estimation of the conditional variance. Instead, we propose to use a recently developed nonparametric procedure (Mercurio and Spokoiny, 2004): the Local Adaptive Volatility Estimation (LAVE). The motivation for using this method is to avoid a possible model misspecification for the conditional variance. In a second step, we suggest a set of estimation and model selection procedures (Berk-Jones tests, kernel density-based selection, censored likelihood score, coverage probability) based on the so-obtained residuals. These methods enable to assess the global fit of a given distribution as well as to focus on its behavior in the tails. Finally, we illustrate our methodology on three time series (UBS stock returns, BOVESPA returns and EUR/USD exchange rates). [less ▲]

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See detailLa discussion à visée démocratique et philosophique au prisme de la critique deleuzienne de la discussion. Analyse d'un verbatim.
Herla, Anne ULg; Jeanmart, Gaëlle

in Diotime. Revue internationale de didactique de la philosophie. (2014, April), 60

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See detailMeta-Cognitive Mystery Tales
Dechêne, Antoine ULg

Conference (2014, April)

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See detailThe role of segmentation and investor recognition through the lens of cross-listing activity
Mouchette, Xavier ULg; Muller, Aline ULg; Carrieri, Francesca

Conference (2014, April)

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See detail“Fairebel” fair milk: a multi-level innovation
Feyereisen, Marlène ULg; Melard, François ULg

Conference (2014, April)

The research focuses on the case study of the Belgian fair-trade milk “Fairebel”, which was created by dairy farmers a few months after the 2009 European milk crisis. This innovation is overseen by the ... [more ▼]

The research focuses on the case study of the Belgian fair-trade milk “Fairebel”, which was created by dairy farmers a few months after the 2009 European milk crisis. This innovation is overseen by the “Fair Milk” programme set up by the European Milk Board (EMB), a European organization of dairy farmers, which has established five fair-trade milk labels in European countries (Austria, the Netherlands, Belgium, Luxembourg, and France). At the Belgian level, the case study of the “Fairebel” project shows how the dairy system is institutionally, politically, and technically locked in. In such an irreversible system, the developers of “Fairebel” have had to use cunning and espouse some contradictions (even inconsistencies) in order to build their idea of fair-trade milk and to achieve its commercialization in the real world of commodities. Also, the “Fairebel” project is trying to increase the market power of dairy farmers and by-passes entirely the dairy industry in Belgium, which refused to support the project. For example, the developers of “Fairebel” stock up on the spot market and the Fairebel” milk cartons are produced and filled by the Luxembourg co-operative dairy Luxlait. On this level, the “Fairebel” project is more a “reorientation of trajectories” than a radical transition of the system: It uses internal resources of the main system to try to change some of its detrimental consequences, such as the prices paid to dairy farmers, without forcing through associated structural transitions. On the European level of the EMB, in which “Fairebel” participates, the transition of the system is radicalized by changing the character and the structure of the regime itself (e.g. CAP): reversal of the balance of power between dairy farmers and dairy processors, re-appropriation of the means of production by the farmers, and modification of the economic and trade rules of the dairy products (e.g., monitoring agency). Taken together, these two levels of this fair-milk innovation strengthen each other, so that the transition that “Fairebel” has inspired is more radical than it would seem when the Belgian level is considered alone. [less ▲]

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See detailVariation des traits fonctionnels le long d’un gradient de cuivre et cobalt : contribution du remplacement d’espèces et de la variabilité intraspécifique
Delhaye, Guillaume; Violle, Cyril; Seleck, Maxime ULg et al

Conference (2014, April)

Les collines cuprocobaltifères du Katanga sont des lieux privilégiés pour étudier la variation des traits fonctionnels le long de gradients de stress métallique. Nous avons étudié la variation de six ... [more ▼]

Les collines cuprocobaltifères du Katanga sont des lieux privilégiés pour étudier la variation des traits fonctionnels le long de gradients de stress métallique. Nous avons étudié la variation de six traits à l’échelle des espèces et de la communauté le long d’un gradient de cuivre et cobalt. D’autres paramètres tels que la concentration en phosphore et l’humidité du sol covarient positivement avec la teneur en métal du sol. Les contributions relatives du remplacement d’espèces et de la variabilité intraspécifique à la variabilité totale des traits dans les communautés ont été déterminées. A l’échelle de la communauté, la hauteur et la surface foliaire diminuent alors que les valeurs des quatre autres traits augmentent le long du gradient. Les espèces montrent des réponses variées, généralement non significatives. Pour tous les traits, le remplacement d’espèce est le moteur principal de la variation au sein des communautés. La concentration en métal du sol implique des réponses variées sur les différents traits et les différentes espèces. Nous montrons que la concentration croissante en métal privilégie le remplacement d’espèce par rapport à la variation intraspécifique et que les espèces répondent par différentes stratégies de tolérance à la concentration en métal du le sol. La variation des traits à l’échelle des communautés est essentiellement le reflet d’un changement dans les abondances des différentes formes de vie. Les espèces à xylopodes sont dominantes sur sol pauvre en métal alors que les annuelles sont dominantes sur sol très enrichi. [less ▲]

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See detailEccentric training improves tendon biomechanical properties: a rat model
Kaux, Jean-François ULg; Drion, Pierre ULg; Libertiaux, Vincent et al

in British Journal of Sports Medicine (2014, April), 48(7), 155

Background: Even if eccentric exercises appear favourable in primary prevention of tendons lesions and, especially, in secondary prevention after tendinopathy, the biomechanical changes to the tissue are ... [more ▼]

Background: Even if eccentric exercises appear favourable in primary prevention of tendons lesions and, especially, in secondary prevention after tendinopathy, the biomechanical changes to the tissue are not yet clear. Objective: We aimed to better define the biomechanical changes that affect healthy tendon after eccentric and concentric training. Design: Randomised controlled trial. Participants: Eighteen Sprague-Dawley rats of 2 months. Interventions: The six rats in the control group (U) were not subjected to physical exercise. The 12 remaining rats (6 in each group) ran on a treadmill set at a +15° incline for concentric training (C) or a -15° incline for eccentric training (E), at a speed of 17 m/min for 1 h, three times per week for 5 weeks. Main Outcome Measurements: The tricipital, patellar and Achilles tendons were subsequently removed to perform a traction test until rupture, and a histological analysis was performed. Results: There was a significant improvement in the rupture force of the patellar and tricipital tendons between the U and E groups. The tricipital tendons in the control group presented a significantly smaller cross-section than the E- and C-trained groups, but none between E and C groups. No significant difference was observed for the mechanical stress at rupture per surface unit between the three groups for all three tendons. However, a tendency towards improvement these values was observed between the trained and the U groups for the patellar tendon. Histological studies demonstrated the tendency of the development of a greater number of blood vessels and a larger quantity of collagen in the eccentric group. Conclusions: The mechanical properties of tendons in rats improve after specific training, especially following eccentric training. Our results partly explained how mechanical loading, especially in eccentric mode, could improve the tendon structure. [less ▲]

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See detailINFLUENCE OF WHEY PROTEIN DENATURATION ON ADHERENCE
Toure, Yetioman ULg; Rouxhet, G. Paul; Dupont-Gillain, C. Christine et al

in Dr Wilson, I.; Chew, Y.M.J. (Eds.) Fouling and Cleaning in Food Processing (2014, April)

This work reports on the influence of -lactoglobulin (β-LGB) and of its denaturation on the adherence of quartz particles, taken as a model of particulate soil, on stainless steel AISI 304 with mirror ... [more ▼]

This work reports on the influence of -lactoglobulin (β-LGB) and of its denaturation on the adherence of quartz particles, taken as a model of particulate soil, on stainless steel AISI 304 with mirror finish. The substrate was soiled with quartz suspensions in water or in β-LGB solutions as such or previously heated at 75°C, and dried at room temperature or in an oven at 75°C. Cleanability was evaluated after exposure to water in a radial flow chamber. Auxiliary characterizations were the surface tension and protein concentration of the solution, surface analysis of the substrate by X-ray photoelectron spectroscopy (XPS) and contact angle measurements. The contact of stainless steel with -LGB led to adsorption of the protein, which dominated the composition of the organic layer with respect to contaminants initially present, and was not markedly desorbed upon rinsing. The presence of β-LGB at the quartz particle/substrate interface slightly increased the adherence, which was further increased when the protein was denatured. On the other hand, denaturation of -LGB enhanced its surfactant effect at the water/air interface. Comparison with systems investigated before suggests that the influence of protein via droplet spreading and soiling particles aggregation may be of minor importance compared to direct effects on the substrate/quartz interface. Stainless steel does not behave as a hydrophilic substrate owing to its surface contamination with organic compounds. It appears suitable to examine the influence of the initial surface state of stainless steel on its behavior regarding soiling and cleaning. [less ▲]

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See detailMultitasking capacities in persons diagnosed with schizophrenia: A preliminary examination of their neurocognitive underpinnings and ability to predict real world functioning
Laloyaux, Julien ULg; Van der Linden, Martial ULg; Levaux, Marie-Noëlle ULg et al

in Schizophrenia Research (2014, April), 153(Supl. 1), 344

Background: Difficulties in everyday life activities are core features of persons diagnosed with schizophrenia. Moreover, patients seem to demonstrate particular difficulties during complex and ... [more ▼]

Background: Difficulties in everyday life activities are core features of persons diagnosed with schizophrenia. Moreover, patients seem to demonstrate particular difficulties during complex and multitasking activities, such as cooking a meal (Semkovska et al., 2004). Multitasking refers to activities where the person has to: carry out and alternate between different tasks that vary in terms of priority, difficulty and duration; define the tasks’ targets; and where the person is faced with unexpected problems during the realization of these tasks (Burgess, 2000). However, at present, patients’ multitasking capacities have not been adequately examined in the literature due to an absence of suitable assessment strategies. We thus recently developed a computerized real-life activity task designed to take into account the complex and multitasking nature of certain everyday life activities where participants are required to prepare a room for a meeting – the Computerized Meeting Preparation Task (CMPT) Methods: Twenty-one individuals diagnosed with schizophrenia and 20 matched healthy controls completed the CMPT. During the CMPT, participants found themselves in a virtual room that they had to prepare for a meeting while respecting a list of instructions (the placement of the guests, the needed objects, the desired drinks, etc.). Patients were also evaluated with an extensive cognitive battery (assessing executive functions, attention, processing speed and memory), measures of symptomatology and real world functioning. To examine the ecological validity of the CMPT, 14 others patients were recruited and were given the computerized version and a real version of the meeting preparation task. Results: Results demonstrated that performance on the CMPT significantly differentiated patients and healthy controls for the total time to complete task, planning efficiency, and the respect of the instructions. Moreover, these variables were significantly correlated with executive functioning (i.e. cognitive flexibility and planning), suggesting the major implication of these cognitive processes in multitasking activities. Performance on the CMPT also significantly predicted up to 50% of real world functioning. Finally, performances on the computerized version and the real version of the meeting preparation task were highly correlated, suggesting good ecological validity. Discussion: In this study, we created a novel task involving the multitasking nature of real world activities. The results demonstrated that this approach provides a good indication of the real world functioning in patients diagnosed with schizophrenia. Moreover, results suggest a particular implication of executive functioning in multitasking activities. These findings suggest the importance of evaluating multitasking capacities in patients diagnosed with schizophrenia in order to predict real world functioning. [less ▲]

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See detailOptimized Waveform Relaxation Methods for Modeling Electromagnetic Field-Circuit Problems
Nshimiyimana, Jean de Dieu ULg; Plumier, Frédéric ULg; Dular, Patrick ULg et al

in Proceedings of Sixteenth Biennal IEEE Conference on Electromagnetic Field Computation (2014, April)

The convergence of classical and optimized waveform relaxation methods is compared for the simulation of field-circuit problems, where a finite element solver is used for the solution of the field problem ... [more ▼]

The convergence of classical and optimized waveform relaxation methods is compared for the simulation of field-circuit problems, where a finite element solver is used for the solution of the field problem and a circuit simulator is used for the electronic circuit. [less ▲]

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See detailSociologie du style littéraire: introduction et conclusions
Stienon, Valérie ULg; Dessy, Clément; van Nuijs, Laurence

Conference (2014, April)

Posée à la littérature, la question du style a, de longue date, suscité engouements et suspicions. Le style littéraire est aujourd’hui considéré comme la trace écrite de l’individu et l’indice d’une ... [more ▼]

Posée à la littérature, la question du style a, de longue date, suscité engouements et suspicions. Le style littéraire est aujourd’hui considéré comme la trace écrite de l’individu et l’indice d’une distance à l’égard de la langue commune. Une telle conception participe pleinement d’une modernité littéraire ayant érigé la singularité et la nouveauté en valeurs esthétiques. En ce sens, elle est aussi le résultat d’une révision importante, à partir du milieu du XIXe siècle, de l’idéal d’un « style parfait », entendu comme un « bien écrire régi par des règles valables pour tous, respectueux de principes qui semblent défier le temps et les plumes » (Philippe 2013 : 2). Au cours de cette évolution épistémique, de norme, le style devient vecteur de création. La transition a été identifiée tantôt en termes d’« autonomisation » du champ littéraire (Bourdieu), tantôt sous l’angle du « passage d’une littérature-discours à une littérature-texte » (Vaillant) et d’un affranchissement de la rhétorique (Philippe). Dès 1753, Buffon soutient dans son Discours sur le style que « le style est l’homme même », le définissant comme la marque textuelle d’une intériorité auctoriale contrastant avec le caractère commun et extérieur des faits traités. Au cours du XIXe siècle, ces considérations sont passées sous la plume des auteurs eux-mêmes, comme l’attestent la préface d’Edmond de Goncourt à Chérie, qui revendique pour l’écrivain « une langue personnelle, une langue portant [sa] signature », et la conception de Marcel Proust, formulée dans une lettre à madame Straus de 1908, selon laquelle « la seule manière de défendre la langue, c’est de l’attaquer ». L’actualité de la recherche est animée par la question du style à travers de nouvelles perspectives qui proposent de l’étudier de manière extensive, qu’il s’agisse de l’orienter dans une perspective transdisciplinaire empruntant volontiers à l’anthropologie ou de lui conférer une dimension existentielle propre à rendre compte du vécu intime des formes et de leurs significations. Parmi ces approches qui réévaluent la part d’individualité, de créativité ou d’originalité que désigne la notion de style, la sociologie de la littérature n’est pas en reste. Pourtant, le style semble constituer pour elle un point aveugle ou un impensé, sur fond du reproche récurrent qui lui est adressé de négliger la « surface verbale » du texte littéraire (Barthes). C’est donc aux différentes possibilités d’étudier le « style littéraire » en sociologie de la littérature qu’est dédié le présent colloque. Si une place lui a été réservée par la rhétorique et si une discipline à part entière lui a été consacrée, le style semble encore résister à une approche sociologique. Les principaux points d’achoppement concernent l’intégration, dans l’analyse stylistique, des conditions matérielles de production et de réception d’une œuvre, ainsi que les corrélations à établir entre les ordres socio-économique et esthétique. De nombreuses questions restent ainsi posées : comment rendre compte des variations significatives qui engagent à la fois des conceptions artistiques et la structure du champ littéraire ? existe-t-il des définitions concurrentes du style, circulant à un même moment ? comment la sociologie littéraire peut-elle rendre compte des étapes d’une évolution qui va du respect de la norme du bien écrire à la multiplication des expressions individuelles ? [less ▲]

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See detailThe Neural Correlates of Re-cancellation Behaviors in Unilateral Neglect: A Neuropsychological Approach
Wansard, Murielle ULg; Bastin, Christine ULg; Meulemans, Thierry ULg

Poster (2014, April)

The present study focused on re-cancellation behaviors in unilateral neglect (i.e., the tendency to search repeatedly items located on the right side in visual search tasks), and used a neuropsychological ... [more ▼]

The present study focused on re-cancellation behaviors in unilateral neglect (i.e., the tendency to search repeatedly items located on the right side in visual search tasks), and used a neuropsychological approach to identify the cerebral correlates of this deficit. Fourteen patients suffering from left neglect and 14 elderly age-matched controls performed a cancellation task without visual feedback. Neglect patients cancelled fewer targets than controls, and re-cancelled an abnormally high number of targets. Lesion maps were used to compare the location of brain damage in neglect patients with the highest versus the lowest percentage of re-cancellations. Anatomical data revealed that the right insula is commonly damaged in 5 out of 6 patients with the highest re-cancellation percentage, but is spared in the subgroup of patients with the lowest re-cancellation percentage. These results suggest that damage to the right insula may contribute to pathological visual search in spatial neglect, possibly by reducing interaction between the ventral and dorsal attention network (the latter being more directly involved in spatial processes). [less ▲]

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See detailComplex regulation of the FRD3 gene in Arabidopsis relatives
Charlier, Jean Benoit; Polese, Catherine ULg; Nouet, Cécile ULg et al

Poster (2014, March 31)

Detailed reference viewed: 18 (6 ULg)
See detailFrom the Gymnasium to the Agora: Hermes and his Cult-Epithets
Paul, Stéphanie ULg

Conference (2014, March 29)

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See detailL'impact de la charge vocale sur la rééducation
Morsomme, Dominique ULg; REMACLE, Angélique ULg

Conference (2014, March 29)

Detailed reference viewed: 30 (6 ULg)
See detailApport des examens biologiques en pratique allergologique
GADISSEUR, Romy ULg

Conference (2014, March 29)

Apport des examens biologiques en pratique allergologique

Detailed reference viewed: 15 (5 ULg)
See detailLa charge vocale
REMACLE, Angélique ULg; Morsomme, Dominique ULg

Conference (2014, March 29)

Detailed reference viewed: 31 (3 ULg)
See detailGlioma metastatis : a case series and review
REUTER, Gilles ULg; LOMBARD, Arnaud ULg; SCHOLTES, Félix ULg et al

Poster (2014, March 29)

Detailed reference viewed: 21 (1 ULg)
See detailIntermediaries, transport costs and interlinked transaction
Tharakan, Joseph ULg

Conference (2014, March 28)

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See detailMethodological approach of identity construction & strategies of allophones in Belgium
Dassargues, Alix ULg; Perrez, Julien ULg

Conference (2014, March 28)

In België bestaat er een nauwe band tussen talen (Nederlands-Frans) en regionale identiteiten (Vlaming-Waal). Echter, de aanwezigheid van Franstaligen in Vlaanderen en van Nederlandstaligen in Wallonië ... [more ▼]

In België bestaat er een nauwe band tussen talen (Nederlands-Frans) en regionale identiteiten (Vlaming-Waal). Echter, de aanwezigheid van Franstaligen in Vlaanderen en van Nederlandstaligen in Wallonië laat zien dat deze band niet automatisch is. Deze twee (onder)bevolkingsgroepen lijken dus een ideaal studiemateriaal om de ingewikkelde relatie tussen taal (talen) en identiteit(en) te bestuderen. Ondanks de belangstelling van verschillende disciplines (onder meer politieke wetenschappen, geschiedenis, sociologie en taalkunde) voor dit onderwerp, valt het toch op dat deze bevolkingsgroepen nog nooit onderzocht werden. In dit onderzoeksproject willen we daarom aan de hand van biografische gesprekken nagaan (i) hoe deze minoriteitsgroepen in een anderstalige context hun identiteit opbouwen, en (ii) in hoeverre ze identiteitsstrategieën gebruiken naargelang van de communicatiecontext waarin ze zich bevinden. Om deze vragen te beantwoorden, zullen biografische gesprekken verzameld worden die die vanuit het interdisciplinaire perspectief van de sociologie, de sociale psychologie, de sociolinguïstiek en de taalkunde geanalyseerd zullen worden. In deze bijdrage zullen we specifieker ingaan op de methodologie die wij zullen gebruiken om deze biografische gesprekken te analyseren. We zullen meer bepaald uitgaan van een tweeledige analyse van identiteitsmarkeerders. Ten eerste zullen we een semantische studie van de identiteitscategorieën verrichten, door de lexicale eenheden te bestuderen die door de informanten gebruikt worden om hun identiteit te omschrijven. Het is hiermee de bedoeling om de sociale categorieën die de respondenten gebruiken verder in kaart te brengen. Ten tweede zullen wij een psychosociale studie van de identiteitsstrategieën van de informanten verrichten. Vanuit dit perspectief kan een identiteit beschouwd worden als het resultaat van de interactie tussen een “identiteit voor zichzelf” en een “identiteit voor de anderen”. In dit onderdeel van onze studie willen we de persoonlijke identiteitsstrategieën van de informanten aan het licht brengen onder meer door hun identiteitskeuzes, zoals bijvoorbeeld de keuze voor een taalvariëteit in een bepaalde communicatiecontext, nauwkeurig te bestuderen. Deze tweedelige methode zal het mogelijk maken om de relatie tussen taal en identiteit in België beter te begrijpen en nauwkeuriger te kunnen omschrijven. [less ▲]

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See detailSpanish Saints in the Spanish Netherlands
Delfosse, Annick ULg

Conference (2014, March 27)

In the seventeenth century, the Roman proclamations of beatification or canonization generated a large number of festivities and spectacular events in many parts of the Monarchy of Spain. Yet, in the ... [more ▼]

In the seventeenth century, the Roman proclamations of beatification or canonization generated a large number of festivities and spectacular events in many parts of the Monarchy of Spain. Yet, in the Netherlands, they received a fainter echo and left a limited number of sufficiently documented testimonies. Two cases, however, are exceptions: the canonization of Ignatius of Loyola and Francis Xavier triumphantly celebrated by the Belgian Jesuits in 1622, and the beatification of Francisco Borgia in 1624, i.e., the elevation to the Catholic pantheon of three Spanish saints rejoiced by an order marked by its hispanophile nature, in provinces recently returned to the Spanish Crown. I will seek to define the Hispanic features of these events and I will particularly stress the very noticeable way how the Spanish communities, present in the Low Countries, committed themselves in these festivities. [less ▲]

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See detailVan het klassieke China naar het moderne Amsterdam: oosterse invloeden in de poëzie van Hans Faverey
Dieu, Véronique ULg

Conference (2014, March 27)

That a modern Dutch poet should have found inspiration in Classical Chinese poetry and philosophy may seem rather unlikely. Yet, the contents of his personal library and a number of statements made in ... [more ▼]

That a modern Dutch poet should have found inspiration in Classical Chinese poetry and philosophy may seem rather unlikely. Yet, the contents of his personal library and a number of statements made in interviews reveal how Hans Faverey (1933-1990) had a great interest in oriental literature, art and thought (especially Taoism and Buddhism). Although many articles have been devoted to the use and function of intertext in Faverey’s poetry, scant attention has been paid to the possible influence of Chinese philosophers and poets on his work. I will argue that Faverey’s obsession with themes like emptiness, stillness and silence may be interpreted as an attempt to integrate some fundamental Taoist and Buddhist ideas into his writing. Taking Faverey’s oriental library as my starting point, and contextualizing it with reference to Tang dynasty poets such as Wang Wei and Li Shang-Yin, and quotations from Kung Sun Lung and the School of Names, I aim to shed a clearer light on those possible connections. The first part of my paper will focus on a number of general concepts from Chinese literature and philosophy, and discuss how Faverey assimilated these concepts into his own poems. The second part of my presentation will be devoted to a comparison between the Tao as text and a selection of Faverey’s work in order to highlight possible parallels in their use of symbols and imagery. Since Faverey, as a poet, was constantly working with and thinking about the written word, he may have been struck not only by Chinese philosophy itself but also by the way in which these thoughts had found their expression in language. The structure of the Chinese language and its penchant for paradoxical turns of phrase may have held an additional appeal for the Amsterdam poet, renowned for his pithy, hermetic writing style that abounds in paradoxes and uncommon allusions. [less ▲]

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See detailProgramming of neuroendocrine self-tolerance in the thymus and its defect in the development of neuroendocrine autoimmunity
Geenen, Vincent ULg

Conference (2014, March 27)

The thymus may be compared to a computer highly specialized in the programming of central immunological self-tolerance. A unique thymus first appeared some 500 million years ago in cartilaginous fishes ... [more ▼]

The thymus may be compared to a computer highly specialized in the programming of central immunological self-tolerance. A unique thymus first appeared some 500 million years ago in cartilaginous fishes, at the same time or shortly after the emergence of the adaptive immune system. A new paradigm of neuroendocrine self-peptides has been proposed, together with the definition of neuroendocrine self. Neuroendocrine self-peptides are secreted by thymic epithelial cells (TECs) not according to the classic model of neurosecretion, but are processed for presentation by the thymic major histocompatibility complex (MHC) machinery. The autoimmune regulator (AIRE) gene/protein controls the transcription of neuroendocrine genes in TECs. Presentation of neuroendocrine self-peptides in the thymus is responsible for the clonal deletion of self-reactive T cells directed toward neuroendocrine antigens, which emerge during the random recombination of gene segments encoding variable parts of the T cell receptor for the antigen (TCR). Quite paradoxically, neuroendocrine self-peptide presentation in the thymus also generates regulatory T (tTreg) cells that inhibit, in the periphery, those self-reactive T cells having escaped thymic negative selection. Several arguments indicate that the origin of autoimmunity directed against neuroendocrine glands results from a primary defect in the intrathymic programming of self-tolerance to neuroendocrine principles. This defect may be genetic or acquired, for example during a viral infection. This novel knowledge of normal and pathologic functions of the thymus constitutes a solid scientific basis for the development of a novel type negative self-vaccination against type 1 diabetes. (Supported by NFSR of Belgium, Wallonia and FP6 Eurothymaide.) [less ▲]

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See detailÂgisme et jeunisme : conséquences trop méconnues …!
Adam, Stéphane ULg

Conference (2014, March 27)

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See detailQuaternary rainforests of the Northern Congo Basin: contribution of charcoal analysis
Morin-Rivat, Julie ULg; Bremond, Laurent; Gillet, Jean-François ULg et al

Conference (2014, March 27)

In comparison with the wood charcoals uncovered in the soils of the temperate regions, charcoals from the tropical regions remain little studied yet, in particular those from the dense humid forests of ... [more ▼]

In comparison with the wood charcoals uncovered in the soils of the temperate regions, charcoals from the tropical regions remain little studied yet, in particular those from the dense humid forests of Central Africa. Here we aim at showing the interest of the analysis of soil charcoals so as to understand the current environments through some examples of taxonomical identifications conducted on charcoals sampled in several soil pits in Cameroon and in the Republic of the Congo. These charcoals were hand-split then observed under an incident light microscope. The anatomical features that are hold in the charcoals and described according to a standard method were compared to wood samples from the reference collection of the RMCA. Results demonstrated that the identified species are still present in the vegetal environment today and that only limited changes occurred over the past two millennia. Charcoal analysis can thus allow a better understanding of the past history of the forests in relationship with the ancient disturbances. The temporal and spatial framework of human settlements as well as the impact of the colonial period on the evolution of the forest is also discussed. [less ▲]

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See detailValuation and price expectation mismatch in SME business transfer
Lambert, Marie ULg

Conference (2014, March 26)

Detailed reference viewed: 22 (7 ULg)
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See detailInternational Law's Belgian Jurists and WWI. Cosmopolitanism of an Elite, Globalization of a Country (Montreal International Colloquium, March 2014)
Genin, Vincent ULg

Conference (2014, March 26)

Our doctoral research is conducted at the University of Liege, under the supervision of Professor Philippe Raxhon (Contemporary History). This work falls within the interuniversity and interdisciplinary ... [more ▼]

Our doctoral research is conducted at the University of Liege, under the supervision of Professor Philippe Raxhon (Contemporary History). This work falls within the interuniversity and interdisciplinary project “commemorating WWI” launched by the Fédération Wallonie-Bruxelles (French Community), the Steering Group of which is led by Professor Laurence Van Ypersele (Université Catholique de Louvain). The research focuses on the following topic: Experiences and remembrance of Belgian jurists on issues of international law during the First World War (1914-1918). Belgium, that had been neutral since its independence in 1831, soon became an active reflection centre and a land of innovation for international law, as shown by the foundation of the Institute of International Law (IDI) in Ghent in 1873. Belgium’s neutrality was violated in August 1914 and its territory, the only one, was occupied at 90% by the Germans, putting the country in a unique position that encouraged its International Law experts to revise their practices in view of their experiences and their remembrance of war. As a matter of fact, between 1918 and 1940, they held a prominent position on a global scale (LN, etc.). How the field of these law experts, its practices, its networks (European/American) and its international influence (1873-1940) evolved as a result of WWI lies at the heart of our thesis. [less ▲]

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See detailAbout the Multifractal Nature of Cantor's Bijection
Simons, Laurent ULg; Nicolay, Samuel ULg

Conference (2014, March 25)

In this talk, we present the Cantor's bijection between the irrational numbers of the unit interval [0,1] and the irrational numbers of the unit square [0,1]². We explore the regularity and the fractal ... [more ▼]

In this talk, we present the Cantor's bijection between the irrational numbers of the unit interval [0,1] and the irrational numbers of the unit square [0,1]². We explore the regularity and the fractal nature of this map. This talk is based on a joint work with S. Nicolay. [less ▲]

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See detailCompact quadratizations of nonlinear binary optimization problems
Crama, Yves ULg; Rodriguez Heck, Elisabeth ULg

Conference (2014, March 25)

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See detailA Weak Local Irregularity Property in $S^\nu$ spaces
Clausel, Marianne; Nicolay, Samuel ULg

Conference (2014, March 25)

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See detailA multifractal-based climate analysis
Deliège, Adrien ULg; Nicolay, Samuel ULg

Conference (2014, March 25)

This work consists of a multifractal analysis of surface air temperature in Western and Eastern Europe. The wavelet leaders method enables us to exhibit the monofractal nature of these signals. Then, we ... [more ▼]

This work consists of a multifractal analysis of surface air temperature in Western and Eastern Europe. The wavelet leaders method enables us to exhibit the monofractal nature of these signals. Then, we define a climate classification relying on the Zygmund-Hölder spaces and show that it matches the Köppen classification. By doing so, we evidence the existing relation between the regularity of the temperature data (obtained through functional spaces) and the type of climate. Finally, we give a climatic interpretation of these results. [less ▲]

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See detailA new multifractal formalism based on wavelet leaders: detection of non concave and non increasing spectra (Part II)
Kleyntssens, Thomas ULg; Esser, Céline ULg; Nicolay, Samuel ULg

Conference (2014, March 25)

This talk follows "A new multifractal formalism based on wavelet leaders: detection of non concave and non increasing spectra (Part I)" given by Céline Esser. For real-life signals, it is impossible to ... [more ▼]

This talk follows "A new multifractal formalism based on wavelet leaders: detection of non concave and non increasing spectra (Part I)" given by Céline Esser. For real-life signals, it is impossible to compute the spectrum of singularities by using its definition. A multifractal formalism is used to approximate this spectrum. We present a new multifractal formalism for non concave and non increasing spectra based on wavelet leaders. In this talk, an implementation of this formalism is given and several numerical examples are presented. [less ▲]

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See detailAgisme : quelles conséquences pour nos aînés?
Schroyen, Sarah ULg; Marquet, Manon ULg

Conference (2014, March 25)

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See detailA new multifractal formalism based on wavelet leaders : detection of non concave and non increasing spectra (Part I)
Esser, Céline ULg; Kleyntssens, Thomas ULg; Nicolay, Samuel ULg et al

Conference (2014, March 25)

Multifractal analysis is concerned with the study of very irregular signals. For such functions, the pointwise regularity may change widely from a point to another. Therefore, it is more interesting to ... [more ▼]

Multifractal analysis is concerned with the study of very irregular signals. For such functions, the pointwise regularity may change widely from a point to another. Therefore, it is more interesting to determine the spectrum of singularities of the signal, which is the Hausdorff dimension of the set of points which have the same Hölder exponent. The spectrum of singularities of many mathematical functions can be determined directly from its definition. However, for many real-life signals, the numerical determination of their Hölder regularity is not feasible. Therefore, one cannot expect to have a direct access to their spectrum of singularities and one has to find an indirect way to compute it. A multifractal formalism is a formula which is expected to yield the spectrum of singularities from quantities which are numerically computable. Several multifractal formalisms based on the wavelet coefficients of a signal have been proposed to estimate its spectrum. The most widespread of these formulas is the so-called thermodynamic multifractal formalism, based on the Frish-Parisi conjecture. This formalism presents two drawbacks: it can hold only for spectra that are concave and it can yield only the increasing part of the spectrum. This first problem can be avoided using Snu spaces. The second one can be avoided using a formalism based on wavelet leaders of the signal. In this talk, we propose a new multifractal formalism, based on a generalization of the Snu spaces using wavelet leaders. It allows to detect non concave and non increasing spectra. An implementation of this method is presented in the talk "A new multifractal formalism based on wavelet leaders: detection of non concave and non increasing spectra (Part II)" of T. Kleyntssens. [less ▲]

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See detailRèglement Successions (650/2012) - aperçu général
Wautelet, Patrick ULg

Conference (2014, March 24)

This presentation gives a very general overview of the main principles on which the Succession Regulation is based.

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See detailNew fossils at the “Troisième caverne” of Goyet (Belgium) and the mortuary practices of late Neandertals
Rougier, H.; Crevecoeur, I.; Beauval, C. et al

Conference (2014, March 21)

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See detailInsight into the ecology of Neandertals in North-West Europe: stable isotopes and their palaeobiological implications
Wissing, C.; Bocherens, H.; Crevecoeur, I. et al

Conference (2014, March 21)

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See detailThe last Neanderthals in North-West Europe and the Lincombian-Ranisian-Jerzmanowician
Flas, Damien ULg

Conference (2014, March 21)

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See detailMSC in clinics: Liver Transplantation
DETRY, Olivier ULg

Conference (2014, March 21)

For several years, mesenchymal stem cells (MSC) have been evaluated in vivo and in vitro for their immunomodulatory, anti-inflammatory, anti- ischemia-reperfusion injury and “tissue repair” properties ... [more ▼]

For several years, mesenchymal stem cells (MSC) have been evaluated in vivo and in vitro for their immunomodulatory, anti-inflammatory, anti- ischemia-reperfusion injury and “tissue repair” properties. These characteristics could make them interesting in various clinical applications, and particularly in organ transplantation. Taking advantage of our centre expertise and experience concerning MSC use in graft-versus-host disease after bone marrow transplantation and using already functioning GMP-compliant laboratory able to produce clinical-grade MSC, we initiated in 2011 a first trial exploring safety and tolerability of third party MSC infusions after kidney or liver transplantation in a prospective phase I-II study. In this study, after successful transplantation, 10 liver and 10 kidney transplant recipients under standard immunosuppressive treatment (tacrolimus, mycophenolate, steroids) receive an intravenous infusion of 1.5 - 3x106/kg of third-party MSC, on post-operative day 3+/-2. These patients are prospectively compared to the same number of liver and kidney transplant recipients who meet inclusion criteria but do not receive MSC infusion. Safety is assessed by recording side effects, including opportunistic infections and cancers. Immunosuppressive potential is evaluated by rejection episode rates, graft/patient survivals, immunohistology of 3-month (kidney) and 6-month (liver) graft biopsies, and in vitro evaluation of recipient immunity profile. In a second step, reduction (kidney) and progressive weaning (liver) of immunosuppression is attempted in recipients who received MSC. Inclusion of liver patients is now complete, and to date 3 kidney patients received MSC. Primary results will be presented, and complete 6-month liver results are expected for the end of 2014. The next step will be to assert the immunosuppressive potential of MSC after organ transplantation, and the opportunity to develop larger randomised, controlled, phase III trials. [less ▲]

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See detailLe suivi des enfants nés prématurés ou avec un très petit poids de naissance : le projet CAP48
Mostaert, Anne; Nassogne, Marie-Cécile; Vermeylen, Danièle et al

Poster (2014, March 20)

This poster describes the cohort of very preterm and very low birth weight newborns recruted in the "CAP48" project and anaylses the main reasons for cessation of follow-up.

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See detailLe vécu de l'ICSI du côté de l'homme
Barbillon, Adrien ULg; Naziri, Despina ULg

Conference (2014, March 20)

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See detailmaking the most of the LBTI nulling interferometry observations using a statistical data reduction method
Marion, Lindsay ULg; Mennesson, Bertrand; Defrère, Denis et al

Poster (2014, March 20)

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See detailLes enseignants à l'image. Représentations iconographiques et audiovisuelles du mouvement enseignant (1995-1996)
Lanneau, Catherine ULg

Conference (2014, March 20)

Les réformes institutionnelles de 1988-1989 ont transféré aux Communautés les compétences en matière d’enseignement. Pour la Communauté française, cette responsabilisation a très vite rimé avec la ... [more ▼]

Les réformes institutionnelles de 1988-1989 ont transféré aux Communautés les compétences en matière d’enseignement. Pour la Communauté française, cette responsabilisation a très vite rimé avec la nécessité de réaliser d’importantes économies et donc d’importantes réformes structurelles. Une première vague de protestation secoue Bruxelles et la Wallonie en 1990 mais, cinq ans plus tard, un nouveau plan d’économies préparé par la socialiste Laurette Onkelinx, Ministre-Présidente de la Communauté française, en charge notamment de l’Education, donne naissance à un long et douloureux mouvement de protestation. Celui-ci semble matérialiser la rupture entre une base enseignante proche, selon les réseaux, du PS ou du PSC, et un Exécutif au sein duquel ces deux partis fonctionnent en coalition. Réduction des dépenses, suppression de trois mille postes, fusions d’écoles, tous les ingrédients sont réunis pour que la situation soit explosive. Elle va l’être d’autant plus – et cela marquera d’ailleurs durablement les esprits – que certaines manifestations de mécontentement vont s’exprimer avec violence, s’attaquer à des symboliques fortes (la Fête de la Communauté française en septembre 1995, le 1er mai 1996) et perturber la vie privée de la Ministre et de son entourage. Notre contribution s’inscrit dans le volet « images produites ». Elle s’interrogera sur le rôle des images dans la représentation que la presse écrite généraliste a donnée du mouvement enseignant et des enseignants eux-mêmes durant ce conflit. Grâce à certaines archives numérisées, le traitement du mouvement par l’audiovisuel public pourra, lui aussi, être abordé. La photographie de presse, la caricature et le reportage ont-ils contribué à présenter le mouvement enseignant de manière objective et dépassionnée ? Ont-ils au contraire – et jusqu’à quel point ? - intégré les clichés traditionnels véhiculés sur cette catégorie socio-professionnelle (conservatisme, attachement à de supposés « privilèges »…). Quelle image est renvoyée du syndicalisme enseignant ? Comment est mise en scène la relation triangulaire entre grévistes, ministre et public de l’école (parents et élèves) ? Quels sont le poids et le rôle dévolus à chacun ? Quelle est, spécifiquement, le traitement réservé au mouvement par un journal comme La Wallonie ? Comment a-t-il accompagné en images la rupture entre le monde enseignant, la CGSP et le parti socialiste, culminant le 1er mai 1996 ? [less ▲]

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See detailChildren’s perspectives on their working lives and on public action against child labour in Burkina Faso
Wouango, Joséphine ULg

Conference (2014, March 20)

Since the end of 1990’s, there has been a growing interest to combat child labour in Burkina Faso. State actors as well as civil society organisations have started to engage themselves to urgently combat ... [more ▼]

Since the end of 1990’s, there has been a growing interest to combat child labour in Burkina Faso. State actors as well as civil society organisations have started to engage themselves to urgently combat the worst forms of child labour. The 2006 National Statistical Survey found that 41.1 % of children aged 5 to 17 years were economically active. Compared to other West African countries, Burkina Faso is said to have the highest rate of children involved in hazardous work, which is one working child out of two. In this context of renewed interest regarding child labour, working children have their say. Based on a qualitative survey, this paper is focused on the perspectives of children working in two of the eleven hazardous sectors of activity identified by the 2009 National Decree: a stone quarry located in the capital Ouagadougou and an artisanal gold mine in a northern rural area. The paper aims to better understand the experience and opinions of children at work, to describe what work means to them, the role and the benefits of work in their lives and the difficulties they encounter. The focus is also on what children (and their families) think about public action against child labour and what are their aspirations regarding the current interventions. The analysis shows that if economic reasons lead children to work in in these two sectors of activity, this not the only determinant. The wish of a large number of children (and their parents) to find other less difficult work reopens the debate on children’s right to work. The results of this study reveal that there is a need to better understand how working children and their fmailies negotiate everyday life within the socio-cultural and economic context of Burkina Faso. [less ▲]

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See detailArtificial Abelian gauge potentials induced by dipole-dipole interactions between Rydberg atoms
Cesa, Alexandre ULg; Martin, John ULg

Poster (2014, March 19)

We analyze the influence of dipole-dipole interactions between Rydberg atoms on the generation of Abelian artificial gauge potentials and fields. When two Rydberg atoms are driven by a uniform laser field ... [more ▼]

We analyze the influence of dipole-dipole interactions between Rydberg atoms on the generation of Abelian artificial gauge potentials and fields. When two Rydberg atoms are driven by a uniform laser field, we show that the combined atom-atom and atom-field interactions give rise to nonuniform, artificial gauge potentials. We identify the mechanism responsible for the emergence of these gauge potentials. Analytical expressions for the latter indicate that the strongest artificial magnetic fields are reached in the regime intermediate between the dipole blockade regime and the regime in which the atoms are sufficiently far apart such that atom-light interaction dominates over atom-atom interactions. We discuss the differences and similarities of artificial gauge fields originating from resonant dipole-dipole and van der Waals interactions. We also give an estimation of experimentally attainable artificial magnetic fields resulting from this mechanism and we discuss their detection through the deflection of the atomic motion. [less ▲]

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See detailImpact des matériaux biosourcés sur le climat intérieur : Un outil de calcul flexible à l'échelle de la pièce
Dubois, Samuel ULg; Lebeau, Frédéric ULg

Conference (2014, March 19)

L'impact de l'utilisation de matériaux d'origine végétale sur le climat intérieur, et donc sur le confort des occupants ainsi que la performance énergétique du bâtiment, n'est établi que partiellement ... [more ▼]

L'impact de l'utilisation de matériaux d'origine végétale sur le climat intérieur, et donc sur le confort des occupants ainsi que la performance énergétique du bâtiment, n'est établi que partiellement. Ces produits présentent des propriétés hygroscopiques et capillaires causant des phénomènes spécifiques liés aux changements de phase dynamiques au sein de la matrice poreuse. Les modèles mathématiques utilisés pour étudier leur comportement hygrothermique de manière détaillée sont souvent des modèles de paroi (dits modèles HAM - Heat Air Moisture). Cela sous-tend qu'ils nécessitent d'imposer des conditions aux limites à toutes les frontières de l'élément étudié, et ne permettent donc pas de connaître les flux de chaleur et de masse réels qu'offrent l'assemblage de matériaux vers le volume d'air intérieur. Pour y accéder, il convient d'intégrer ces modèles à la description de bilans thermique et hydrique de zones. Dans cette communication, nous présentons un modèle hygrothermique capable de simuler l'évolution temporelle du climat intérieur d'une ou de plusieurs pièces ("zones thermiques"). Il est composé d'un module HAM basé sur des équations aux dérivées partielles et caractérisant les transferts dans les matériaux de construction et développé au sein de l'environnement numérique COMSOL Multiphysics. Les équations qui le composent sont flexibles et facilement adaptables au cas expérimental modélisé ainsi qu'aux propriétés des matériaux composant les parois. En outre, on y trouve un traitement complet des phénomènes de changement de phase qui prend en compte l'impact de la température sur la capacité de stockage d'humidité du matériau. Ce premier module, est couplé à un outil caractérisant les bilans chaleur/masse au niveau de la zone à l'aide d'équations aux dérivées ordinaires. Le couplage des modèles est effectué au sein de SIMULINK, un outil de MATLAB destiné à l'étude des systèmes dynamiques. Nous appliquons ensuite ce modèle à l'étude d'un mur en ballots de paille séparant une enceinte climatique de grande taille en deux volumes d'air. Les données d'une expérience simple, un choc thermique imposé à un des volumes d'air, sont comparées aux sorties du modèle numérique. [less ▲]

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See detailContribution à l'amélioration de l'accès à une eau potable de qualité pour les populations de la région nord du Burkina Faso
Some, Issam; Guel, Boubié; Hantson, Anne-Lise et al

Poster (2014, March 19)

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See detailGoro Gheri, un secrétaire au service de l'art
Miesse, Hélène ULg

Poster (2014, March 19)

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See detailPrésentation de l'Action de Recherches Concertée EpistolART
Delfosse, Annick ULg; Allart, Dominique ULg; Moreno, Paola ULg et al

Conference (2014, March 19)

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See detailGreen and bio-inspired processes for the functionalization of surfaces
Detrembleur, Christophe ULg

Conference (2014, March 18)

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See detailEtiologie de la myopathie atypique : conditions de toxicité de l’agent causal – étude préliminaire
Patarin; van Galen, Gaby; Dopagne, Claude ULg et al

in 40ème journée de la recherche équine (2014, March 18)

Recently it has been shown that atypical myopathy in Europe results from hypoglycin A ingestion, a toxin produced in the seeds (samares) of some trees of the genus Acer. Grasslands of 12 cases of atypical ... [more ▼]

Recently it has been shown that atypical myopathy in Europe results from hypoglycin A ingestion, a toxin produced in the seeds (samares) of some trees of the genus Acer. Grasslands of 12 cases of atypical myopathy for whom the toxic metabolite of hypoglycin A was found in the blood were visited by two experienced botanists in order to establish the list of the different species of trees found in or around these pastures. For all visited pastures, horses had the opportunity to ingest samaras from various maple species. The sycamore maple (Acer pseudoplatanus) was the only common tree in all pastures visited (n = 12 /12). Other trees with samaras were also found near or around the pastures. Since June 2013, a study is conducted to define the conditions of toxicity of several species of trees via the sampling, at regular intervals, of samaras and leaves. The study of the seasonal evolution of the toxicity of these trees in relation to weather conditions and specific biotopes will aim [less ▲]

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See detailInfluence of dipole-dipole interactions decoherence-free states
Damanet, François ULg; Martin, John ULg

Poster (2014, March 18)

Decoherence, known as the consequence of the coupling of any quan- tum system to its environment, causes information loss in the system and represents a major problem in the physical realization of quan ... [more ▼]

Decoherence, known as the consequence of the coupling of any quan- tum system to its environment, causes information loss in the system and represents a major problem in the physical realization of quan- tum computers [1]. Decoherence-Free States (DFS) are considered as a possible solution to this problem. A set of trapped cold atoms placed in a DFS state will be immune against decoherence due to sponta- neous emission. However, because of dipole-dipole interactions between atoms, induced dephasing effects are likely to destroy the coherence and drive the system out of its DFS [1-2]. In this work, we study nu- merically the dynamics of a set of two-level atoms initially in a DFS with respect to dissipative processes by solving the master equation in- cluding both dissipative dynamics and dipole dipole interactions. We focus our attention on the influence of dipolar coupling on the radiated energy rate and coherence of the system as in [3]. In particular, by av- eraging over many realizations of close randomly distributed atomic positions, we show the formation of a superradiant-like pulse and we study its properties as a function of the dipolar coupling strength. [1] D. A. Lidar & K. B. Whaley, Lectures Notes in Phys., Vol. 622, p83-120, Springer (2003). [2] M. Gross & S. Haroche, Physics reports 93, 301-396 (1982). [3] W. Feng, Y. Li & S. -Y. Zhu, arXiv :1302.0957. (2013). [less ▲]

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