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See detailTerrorisme, flux médiatique et petits chatons. De quelques narrations de l'invisible.
Hamers, Jérémy ULg

Scientific conference (2016, April 28)

Partant de quelques événements terroristes récents (Paris 2015, Verviers 2015, Bruxelles 2016), cette conférence une analyse critique des multiples réactions médiatiques que ces événements ont suscité en ... [more ▼]

Partant de quelques événements terroristes récents (Paris 2015, Verviers 2015, Bruxelles 2016), cette conférence une analyse critique des multiples réactions médiatiques que ces événements ont suscité en télévision comme sur internet. Editions spéciales de journaux télévisés, enquêtes d'amateurs sur des sites dédiés aux théories du complot, détournements d'images sur les réseaux sociaux seront abordés ici comme autant de narrations qui, malgré leur hétérogénéité, répondent toutes à l'invisibilité partielle et momentanée de l'acte terroriste au moment où il surgit dans le paysage médiatique. [less ▲]

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See detailLa Paix de Fexhe. Qui ? Quoi ? Comment ? Pourquoi ?
Masson, Christophe ULg

Conference given outside the academic context (2016)

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See detailAdministration of Third-Party Mesenchymal Stromal Cells at the Time of Kidney Transplantation: Interim Safety Analysis at One-Year Follow-Up
Erpicum, Pauline ULg; WEEKERS, Laurent ULg; DETRY, Olivier ULg et al

Conference (2016, April 28)

Objective. Mesenchymal stromal cells (MSC) therapy has been suggested in kidney transplantation (KTx). We report on the 1-year follow-up of an open-label phase I trial using MSC at the time of KTx ... [more ▼]

Objective. Mesenchymal stromal cells (MSC) therapy has been suggested in kidney transplantation (KTx). We report on the 1-year follow-up of an open-label phase I trial using MSC at the time of KTx. Methods. On postoperative day 3 (D3), third-party MSC (~2.0x106/kg) were administered to 7 non-immunized first-transplant recipients from deceased donors, under standard immunosuppression (Basiliximab, Tacrolimus, MMF and steroids). No HLA matching was required for MSC donors. In parallel, 7 comparable KTx recipients were included as controls. Written informed consent was obtained from all participants. Results. No hemodynamic or immune-allergic side-effect was noted at the time of MSC injection. Still, 1 patient with a history of ischemic heart disease had a NSTEMI ~3h after MSC infusion. Four MSC patients presented with CMV reactivation within 165 ± 96 days post KTx, whereas 3 controls had positive polyoma-BK viremia within 92 ± 4d post KTx. Three MSC patients were affected by pneumonia within 269 ± 98d post KTx, whereas 3 controls had urinary infection within 48 ± 43d post KTx. No MSC engraftment syndrome was observed. At D14, eGFR in MSC and control groups was 47.1 ± 6.8 and 39.7 ± 5.9 ml/min, respectively (p, 0.05). At 1 year, eGFR in MSC and control groups was 43.1 ± 17.8 and 53.9 ± 13.4 ml/min, respectively (p, 0.25). At 3-month protocol biopsy, no rejection was evidenced in MSC or control patients. Later on, 1 acute rejection was diagnosed at D330 in 1 MSC patient. No biopsy-proven AR was noted in controls. Three patients developed anti-HLA antibodies against MSC (n=1) or shared kidney/MSC (n=2) mismatches. Conclusions. MSC infusion was safe in all patients except one. Incidence of opportunist and non-opportunist infections was similar in both MSC and control groups. No MSC engraftment syndrome was documented. No difference in eGFR was found at 1 year post KTx. Putative immunization against MSC was observed in 3 patients. [less ▲]

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See detailLa ligne et la boucle. Michel Strogoff ou l'involution
Durand, Pascal ULg

Conference (2016, April 28)

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See detailImpact de l'incertitude sur la gouvernance des institutions de microfinance: cas de coopératives burundaises
Niyungeko, Thadée ULg

Doctoral thesis (2016)

The microfinance sector has attracted increasing attention particularly in literature and in political circles in recent years. Microfinance is seen as a key means for the poors to access to financial ... [more ▼]

The microfinance sector has attracted increasing attention particularly in literature and in political circles in recent years. Microfinance is seen as a key means for the poors to access to financial services. Nevertheless, one of the challenges of microfinance institutions lies in their governance. To study the governance of microfinance institutions, many authors recommend to consider not only their diversity related to their natures and their missions, but also the context of the country in which they operate. However, existing works have not fully taken into account the contextual factors in the study of the governance of MFIs. This thesis contributes to bridge these gaps. It is in this sense of a specific and suitable approach to microfinance institutions. It analyzes the impact of the uncertainty related to an internal armed conflict in Burundi cooperatives. This research shows that face of uncertainty, policymakers are faced with the decision-making problems in compliance with the rules. Conflicts of interest arise, the paradoxes in the roles of directors or in inter-organizational relationships are observed. The results of this research also show the limits of volunteer principle in cooperative organizations in times of uncertainty. To cope with uncertainty, cooperatives undertaking various coping strategies despite their organizational similarities. They further develop inter-organizational relationships in search of legitimacy and scope of expression. Belonging to the network and the pressures of supervisor push these organizations to adopt isomorphic structures and practices. This thesis is a first milestone in the studies on the governance of cooperatives under uncertainty. It goes beyond the Burundian context by formulating hypotheses to be tested in future studies and in other places. [less ▲]

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See detailGestion des pyodermites superficielles récidivantes chez le chien
Mignon, Bernard ULg

Conference given outside the academic context (2016)

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See detailUnderground pumped storage hydroelectricity using abandoned works (deep mines or open pits) and the impact on groundwater flow
Pujades, Estanislao ULg; Willems, Thibault ULg; Bodeux, Sarah ULg et al

in Hydrogeology Journal (2016)

Underground pumped storage hydroelectricity (UPSH) plants using open-pit or deep mines can be used in flat regions to store the excess of electricity produced during low-demand energy periods. It is ... [more ▼]

Underground pumped storage hydroelectricity (UPSH) plants using open-pit or deep mines can be used in flat regions to store the excess of electricity produced during low-demand energy periods. It is essential to consider the interaction between UPSH plants and the surrounding geological media. There has been little work on the assessment of associated groundwater flow impacts. The impacts on groundwater flow are determined numerically using a simplified numerical model which is assumed to be representative of open-pit and deep mines. The main impact consists of oscillation of the piezometric head, and its magnitude depends on the characteristics of the aquifer/geological medium, the mine and the pumping and injection intervals. If an average piezometric head is considered, it drops at early times after the start of the UPSH plant activity and then recovers progressively. The most favorable hydrogeological conditions to minimize impacts are evaluated by comparing several scenarios. The impact magnitude will be lower in geological media with low hydraulic diffusivity; however, the parameter that plays the more important role is the volume of water stored in the mine. Its variation modifies considerably the groundwater flow impacts. Finally, the problem is studied analytically and some solutions are proposed to approximate the impacts, allowing a quick screening of favorable locations for future UPSH plants. [less ▲]

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See detailEvolution de l'enseignement par la simulation
Servotte, Jean-Christophe ULg

Conference given outside the academic context (2016)

Présentation de l'évolution de la simulation avec un focus sur la pédagogie utilisée ainsi que sur les facteurs humains et l'impact sur la qualité des soins et la sécurité des patients

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See detailAre BVOC exchanges in agricultural ecosystems overestimated? Insights from fluxes measured in a maize field over a whole growing season
Bachy, Aurélie ULg; Aubinet, Marc ULg; Schoon, Niels et al

in Atmospheric Chemistry and Physics (2016), 16(8),

Although maize is the second most important crop worldwide, and the most important C4 crop, no study on biogenic volatile organic compounds (BVOCs) has yet been conducted on this crop at ecosystem scale ... [more ▼]

Although maize is the second most important crop worldwide, and the most important C4 crop, no study on biogenic volatile organic compounds (BVOCs) has yet been conducted on this crop at ecosystem scale and over a whole growing season. This has led to large uncertainties in cropland BVOC emission estimations. This paper seeks to fill this gap by presenting, for the first time, BVOC fluxes measured in a maize field at ecosystem scale (using the disjunct eddy covariance by mass scanning technique) over a whole growing season in Belgium. The maize field emitted mainly methanol, although exchanges were bi-directional. The second most exchanged compound was acetic acid, which was taken up mainly in the growing season. Bi-directional exchanges of acetaldehyde, acetone and other oxygenated VOCs also occurred, whereas the terpenes, benzene and toluene exchanges were small, albeit significant. Surprisingly, BVOC exchanges were of the same order of magnitude on bare soil and on well developed vegetation, suggesting that soil is a major BVOC reservoir in agricultural ecosystems. Quantitatively, the maize BVOC emissions observed were lower than those reported in other maize, crops and grasses studies. The standard emission factors (SEFs) estimated in this study (231 ± 19 µg m−2 h−1 for methanol, 8 ± 5 µg m−2 h−1 for isoprene and 4 ± 6 µg m−2 h−1 for monoterpenes) were also much lower than those currently used by models for C4 crops, particularly for terpenes. These results suggest that maize fields are small BVOC exchangers in north-western Europe, with a lower BVOC emission impact than that modelled for growing C4 crops in this part of the world. They also reveal the high variability in BVOC exchanges across world regions for maize and suggest that SEFs should be estimated for each region separately. [less ▲]

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See detailNouveautés en matière de détention préventive ou les droits de la défense à prix bradés : une fausse bonne affaire ?
Michiels, Olivier ULg; Kerzmann, Ludivine

in La loi "Pot-pourri II " : un recul de civilisation ? (2016)

L'article fait le point sur les innovations apportées à la loi sur la détention préventive par la réforme Pot Pourri II.

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See detailL'impact la Sixième réforme de l'Etat sur l'action internationale des entités fédérées
Behrendt, Christian ULg

Conference given outside the academic context (2016)

Conférence donnée lors des Journées diplomatiques de Wallonie-Bruxelles International (WBI) et de l'AWEX, Bruxelles, au siège de WBI et de l'AWEX, 28 avril 2016.

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See detailPrêt "coup de pouce": un nouvel incitant fiscal wallon pour le financement des entreprises débutantes
Bourgeois, Marc ULg; Pace, Xavier ULg

in Bourgeois, Marc (Ed.) Les incitants fiscaux pour les PME - actualités et aspects comptables (2016, April 28)

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See detailModelling of long-term deep renovation strategies for the Belgian building stock
Ruellan, Guirec ULg

Poster (2016, April 28)

To achieve the EU energy targets for 2050, the construction sector has to perform major transformations. In Belgium, the majority of building stock is particularly old and energy inefficient. The high ... [more ▼]

To achieve the EU energy targets for 2050, the construction sector has to perform major transformations. In Belgium, the majority of building stock is particularly old and energy inefficient. The high performance of new constructions represented in the nearly zero energy buildings target is not sufficient to ensure the efficiency of the overall building sector. Therefore, it is crucial to put in place a progressive renovation policy. Despite the different renovation strategies and projects that took place in the recent year in Belgium, the overall renovation rate remains almost stable for the last ten years. This study focuses on the renovation market in Belgium and analyzes the factors that influence the evolution of the renovation rate. The objective is the identification and development of effective strategies bypass that leads to increased renovation rates in Belgium. The research methodology is based on an iterative process, based on a systematic literature review of Flemish and Walloon projects, publications and policy. These first work package will allow to identify factors influencing the renovation rate and in other hand to build a model of the existing building stock. Impacts of the influencing factors on the building stock are simulated in the fourth work package in order to propose an action plan in the last part. Three mains outcomes are expected: A model of the existing building stock in Belgium and its retrofit potential, a simulation of the effects of different strategies used to increase the renovation rate in Belgium and a theoretical action plan on strategies to increase the rate of renovation in Belgium. These results are necessary to inform and support the decision making of policy makers, municipalities and operational planning authorities across Belgium. [less ▲]

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See detailPercevoir et reconnaître des symboles. La théorie de la représentation iconique de Dominic Lopes.
Hagelstein, Maud ULg

Conference (2016, April 28)

Perceiving and recognizing symbols. Dominic Lopes’ theory of iconic representation. In his works on the epistemological value of images (Understanding Pictures - 1996), Dominic Lopes (Department of ... [more ▼]

Perceiving and recognizing symbols. Dominic Lopes’ theory of iconic representation. In his works on the epistemological value of images (Understanding Pictures - 1996), Dominic Lopes (Department of Philosophy - University of British Columbia) develops an analytical aesthetics primarily concerned with iconic representation. His analysis distinguishes two models of iconic representation comprehension. In the first model, inspired by perceptual approaches like that of Richard Wollheim, the process of image recognition is rooted in perception (to sum it up: perceptualism embraces the idea of « likeness » between the image and what it represents). One of this model’s shortcomings, however, is that it too readily assumes that perception can be a natural, straightforward process. Indeed, iconic representation can not be understood through perception alone, as vision is of course influenced by cultural and, most of all, cognitive processes. A representative model thus needs to account for the ways in which iconic recognition differs from ordinary visual recognition. In the second model, which build off of symbolic approaches like that of Nelson Goodman, iconic representation works the same way as other types of symbols, particularly linguistic ones. Thus, this approach considers the similarities between images and language (representations which are both affected by processes of denotation and predication). However, we all know how strongly image theoreticians have been resisting the linguistic paradigm (iconic turn topic): some worry about overlooking the image’s semantic density in favor of its « simple » descriptive quality. Lopes finds a path between these two models by developing a « theory of aspect recognition », which incorporates perceptive elements into a symbolic structure. According to Lopes, if we agree that images belong to symbolic systems of denotation, then « they might be symbols for which the reference is dependent on the carrying out of perceptive aptitudes », a claim which my talk will explore. I will also discuss how Lopes’ theory accounts for skills acquisition (the capacity to recognize) through images, and shows how images help these skills progressively develop. [less ▲]

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See detailThe Protection of Defendants before International Criminal Tribunals: The Graver the Offence, the Lesser the Rights?
Deprez, Christophe ULg

Scientific conference (2016, April 27)

This presentation addressed the question whether the gravity of international crimes calls for the application of a more flexible human rights standard before international criminal tribunals.

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See detailOikoi and State. A new light on Upper Mesopotamian economic system
Mas, Juliette ULg

Conference (2016, April 27)

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See detailDiscontinuity lines in superconducting films with predefined edge defects
Brisbois, Jérémy ULg

Conference (2016, April 27)

We present a thorough investigation by magneto-optical imaging of the magnetic flux penetration in Nb thin films with lithographically defined border indentations. We demonstrate that discontinuity lines ... [more ▼]

We present a thorough investigation by magneto-optical imaging of the magnetic flux penetration in Nb thin films with lithographically defined border indentations. We demonstrate that discontinuity lines (d-lines), caused by the abrupt bending of current streamlines around the indentations, depart from the expected parabolic trend close to the defect and depend on the shape and size of the indentation as well as on the temperature. These findings are backed up and compared with theoretical results obtained by numerical simulations and analytical calculations highlighting the key role played by demagnetization effects and the creep exponent n. In addition, we show that the presence of nearby indentations and submicrometer random roughness of the sample border can severely modify the flux front topology and dynamics. Strikingly, in contrast to what has been repeatedly predicted in the literature, we do not observe that indentations act as nucleation spots for flux avalanches, but they instead help to release the flux pressure and avoid thermomagnetic instabilities. [less ▲]

Detailed reference viewed: 32 (6 ULg)