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See detailEarly Jezirah 3b Pottery from Tell Beydar. Selected Inventories from latest excavation campaigns
Mas, Juliette ULg; Gavagnin, Katia

Conference (2012, April)

Since 1992, excavations at Tell Beydar have offered the opportunity to explore an urban centre of the Upper Khabur region. The extensive exploration of the EJZ 3b levels gave us access to the urbanism and ... [more ▼]

Since 1992, excavations at Tell Beydar have offered the opportunity to explore an urban centre of the Upper Khabur region. The extensive exploration of the EJZ 3b levels gave us access to the urbanism and the architecture of the city as well as its material culture, especially the pottery. The assemblages presented in this paper were exclusively found directly on the floors of various buildings (of a public, domestic, religious, offi- cial nature) and inside a grave. Most of these inventories consist of complete vessels discovered either intact or smashed but restorable. The aim of this paper is to investigate if, or to what extent, the intra-site distribution of the morphological repertoire of Beydar IIIb ceramic is related to its context of use. [less ▲]

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See detailLight as a modulator of cognitive brain functions
Vandewalle, Gilles ULg

Conference (2012, April)

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See detailLe statut du “logos” dans Être et temps.
Gauvry, Charlotte ULg

Conference (2012, April)

Detailed reference viewed: 13 (0 ULg)
See detailDo Identities Matter More than Party Interests in Ethno-Territorial Politics? Conceptual and Empirical Insights from Multilevel and Deeply Divided Belgium
Reuchamps, Min ULg; Dodeigne, Jérémy ULg; Sinardet, Dave

Conference (2012, April)

In territorial politics, identities are a chief variable of the political life. By definition, the ethno-linguistic identities play(ed) an important role in the political dynamics of several highly ... [more ▼]

In territorial politics, identities are a chief variable of the political life. By definition, the ethno-linguistic identities play(ed) an important role in the political dynamics of several highly divided societies. In most cases, the institutional design is in fact adapted or has been adapted to the ethno-linguistic divisions of the country. According to quite a few scholars, it is especially true for political elites who are not only shaped by this variable but also use this variable to legitimate their attitudes and actions. Therefore political elites of each ethno-linguistic group appeared to behave as monolithic blocks, standing against each other along ethno-linguistic lines. Nonetheless, this view neglects the role of party interests in explaining the behaviors of political elites. An important question for ethno-territorial politics should be raised: do identities matter more that party interests? The current reform of the – multilevel and deeply-divided – Belgian state provides a fertile ground to test this hypothesis. To what extent, party interests can account for political elites’ position in the debate about the 6th Belgian constitutional reform? To explore these questions, we surveyed every representative of Belgium’s seven legislative assemblies with a standardized questionnaire (Summer 2011). This research will help us apprehend the rationale behind political elites’ attitudes – be it identities, party interests or a mix of them – negotiating the new boundaries of the state and above all shed light on territorial politics in Europe. So doing, this paper aims at contributing to the debate that explores the possibility of a unified analytical approach bridging ethno-territorial politics and party politics. [less ▲]

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See detailHow convection and diffusion processes might affect biological imprints, a challenge for modelers
Tison, J.-L.; Zhou, Jiayun ULg; Thomas, D. et al

Conference (2012, April)

Detailed reference viewed: 8 (2 ULg)
See detailEsthetic management : a team approach.
MAINJOT, Amélie ULg; LAMBERT, France ULg

Conference (2012, April)

Detailed reference viewed: 10 (0 ULg)
See detailThe oxygen nightglow emissions of Venus: vertical distribution and role of collisional quenching
Gérard, Jean-Claude ULg; Soret, Lauriane ULg; Migliorini, Alessandra et al

Conference (2012, April)

The oxygen nightglow emissions of Venus: vertical distribution and role of collisional quenching J.-C. Gérard (1), L. Soret (1), A. Migliorini (2), G. Piccioni (2), and P. Drossart (3) (1) LPAP ... [more ▼]

The oxygen nightglow emissions of Venus: vertical distribution and role of collisional quenching J.-C. Gérard (1), L. Soret (1), A. Migliorini (2), G. Piccioni (2), and P. Drossart (3) (1) LPAP - Université de Liège - Belgium (jc.gerard@ulg.ac.be, 0032 4 366 9711), (2) INAF - Rome, Italy, (3) LESIA, Observatoire de Paris - Meudon, France Three-body recombination of atomic oxygen produces O2 molecules excited in different electronic states such as a 1∆g, b 1 􏰀+g , A 3 􏰀+u , c 1 􏰀uand A’ 3∆u, each with a specific quantum efficiency. When they radiate, optical transitions are observed in a wide range of wavelengths extending from the ultraviolet to the near infrared. In planetary atmospheres, spontaneous radiative deexcitation compete with collisional quenching with ambient molecules and atoms. As a consequence, the corresponding airglow emission profiles may significantly differ from each other in brightness and altitude of the emitting layer. We model the volume emission rates and limb profiles of the O2 Atmospheric Infrared (a 1∆-X 3 􏰀), Herzberg I (A 3 􏰀-X 3 􏰀), Herzberg II (c 1 􏰀-X 3 􏰀), Chamberlain (A’ 3∆-a 1∆) bands expected on the Venus night side. The quenching rates are taken from laboratory and observational planetary data and we apply two different methods to determine the oxygen and CO2 density profiles. One is based on recent analysis of data collected by instruments on board the Venus Express mission. The second one uses a one-dimensional chemical-diffusive model where the free parameters are the strength of turbulent transport and the downward flux of O atoms. Both approaches indicate that the calculated intensities of each transition range over several orders of magnitude and that differences are expected in the altitude of the maximum emission. These predictions will be compared with VIRTIS/Venus Express limb observations, which make it possible to derive the vertical distribution of the O2 emissions in the visible and infrared. These measurements suggest that no difference is observed between the altitude of the peak of the IR Atmospheric and Herzberg II bands. Conclusions will be drawn about the validity of the current set of quenching coefficients used in the model. [less ▲]

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See detailDivergences morphologiques et génétiques chez une espèce de demoiselle (Pomacentridae): Pomacentrus coelestis
Frederich, Bruno ULg; Liu, Shang-Yin

Conference (2012, March 30)

La différentiation des populations est l’un des principaux thèmes de la biologie de l’évolution. Mise à part l’étude des variations des patrons de coloration, très peu d’études concernent les divergences ... [more ▼]

La différentiation des populations est l’un des principaux thèmes de la biologie de l’évolution. Mise à part l’étude des variations des patrons de coloration, très peu d’études concernent les divergences morphologiques entre les populations de poissons des récifs coralliens. Dans ce travail, nous avons étudié la différentiation morphologique et génétique entre plusieurs populations de l’espèce de demoiselle, Pomacentrus coelestis Jordan & Starks, 1901, dans le Nord-Ouest de l’océan Pacifique. Cette espèce, inféodée aux récifs coralliens, se nourrit principalement de zooplancton. Elle est particulièrement abondante dans cette région du monde. Les formes des mâchoires buccales (c’est-à-dire la mandibule et le prémaxillaire) ont été étudiées au moyen des méthodes de morphométrie géométrique et la structure génétique des populations a été caractérisée au moyen de cinq microsattelites (POM3, POM2, AC1578, Pom2269 et Pom2416). Différents tests statistiques ont révélé une variation significative de forme entre les populations de P. coelestis pour chacune des deux pièces squelettiques. Les variations de forme de la mandibule et du prémaxillaire apparaissent non-corrélées. Les variations morphologiques de la mandibule accompagne une rupture génétique entre des populations de l’île principale du Japon et les îles d’Okinawa et Taiwan. Cependant, les tests de Mantel et Procrustes n’ont révélé aucune congruence entre les structures génétiques et morphologiques. Des variables géographiques telles que la latitude, la longitude et les distances kilométriques expliquent peu ou pas les variances morphologiques observées. Dans notre discussion, nous illustrons que la plasticité phénotypique serait un mécanisme évolutif potentiel sous-jacent à la différence de formes entre les populations de P. coelestis. Cependant l’hypothèse d’une divergence adaptative ne pourrait cependant pas être exclue vu que nous avons uniquement étudié des marqueurs génétiques neutres (microsattelites). Une approche écomorphologique suggère que des régimes alimentaires différents pourraient être liés aux variations de forme des mâchoires buccales. A titre d’exemple, les individus des populations de l’île principale du Japon ont des mandibules plus massives suggérant des activités de broutage et/ou de morsure plus fréquentes. Inversément, les individus de Taiwan et d’Okinawa arborent un processus ascendant du prémaxillaire proportionellement plus long que les poissons des autres populations. Cette caractéristique, directement liée à l’efficacité de protrusion des mâchoires supérieures, confirmerait un degré de zooplanctonophagie plus élevé chez ces deux populations. [less ▲]

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See detailIntentionnalité de se
Dewalque, Arnaud ULg

Conference (2012, March 30)

Le programme philosophique de Chisholm prétend constituer une alternative au programme mis en œuvre par Quine dans "Word and Object" (1960). Son ambition est de rendre compte de notre capacité à nous ... [more ▼]

Le programme philosophique de Chisholm prétend constituer une alternative au programme mis en œuvre par Quine dans "Word and Object" (1960). Son ambition est de rendre compte de notre capacité à nous référer à des objets, non pas à partir d’un cadre prioritairement sémantico-linguistique (comme le fait Quine), mais à partir de ce que l’on appelle communément les « attitudes intentionnelles », telles que croire, désirer, espérer, etc. Chisholm défend ainsi ce qu’il appelle la « primauté de l’intentionnel », ce qui signifie en fait la primauté du point de vue mental sur le point de vue linguistique . Dans "The First Person" (1981), Chisholm développe une deuxième thèse bien plus ambitieuse et bien plus problématique: il soutient que toute référence mentale à un objet doit être construite comme une auto-référence, une référence à soi-même (thèse de la « primauté du personnel »). Je retrace ici la provenance brentanienne de cette thèse et je présente quelque difficultés de l'argumentation de Chisholm. [less ▲]

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Peer Reviewed
See detailDo common principles underlie the representation of order in STM and numerical judgment tasks?
Attout, Lucie ULg; Majerus, Steve ULg

Conference (2012, March 29)

Although many studies have explored magnitude effects in numerical cognition, the representation of order information has received only limited interest. We explored the hypothesis that common abstract ... [more ▼]

Although many studies have explored magnitude effects in numerical cognition, the representation of order information has received only limited interest. We explored the hypothesis that common abstract ordinal representations underlie the representation of order information across different domains. We tested this hypothesis by determining the similarity of distance effects in short-term memory (STM) order probe recognition (did ‘8’ occur before ‘5’ in the list ‘3, 6, 5, 4, 8, 7’ presented a few seconds ago?) and in order judgment tasks (does ‘1’ occur before ‘2’), both numerical and alphabetical stimuli were used. In numerical cognition, adjacent numbers are typically judged more slowly than more distant numbers. In fifty healthy adults, we observed significant distance effects across all tasks: in the order judgment tasks, adjacent numbers/letters were judged more slowly than more distant numbers/letters; in the STM tasks, order recognition was slowed for stimuli stemming from adjacent positions in the STM list as compared to stimuli stemming from more distant positions. Regression slopes for distance effects were identical across the different tasks and conditions. Furthermore, the size of distance effects correlated significantly across tasks, except for the order judgment task with numerical stimuli. We will discuss the implications of these results for a hypothetical common representational system of order information in STM and numerical cognition. [less ▲]

Detailed reference viewed: 51 (3 ULg)
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See detailLa transgression de la norme dans la religion grecque antique : le cas de l'impiété (asebeia)
Delli Pizzi, Aurian ULg

Conference (2012, March 29)

Présentation diachronique du concept d'impiété dans la religion grecque antique

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See detailNeuromorphic reinforcement learning
Dethier, Julie ULg; Ernst, Damien; Sepulchre, Rodolphe

Conference (2012, March 29)

Living organisms are able to successfully perform challeng- ing tasks such as perception, classification, association, and control. In hope for similar successes in artificial systems, neuromorphic ... [more ▼]

Living organisms are able to successfully perform challeng- ing tasks such as perception, classification, association, and control. In hope for similar successes in artificial systems, neuromorphic engineering uses neurophysiological models of perception and information processing in biological sys- tems to emulate their functions but also resemble their struc- ture [1]. In this abstract, we focus on the basal ganglia (BG), brain region in control of primitive functions of the nervous system, and specifically on their involvement in action selec- tion and reinforcement learning (RL). We hypothesize that neuromorphic-inspired systems will greatly benefit the RL community. [less ▲]

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See detailGlobal imbalances, Exchange Rates and Economic Growth
Artige, Lionel ULg; Cavenaile, Laurent

Conference (2012, March 29)

Detailed reference viewed: 28 (3 ULg)
See detailConclusions générales et perspectives
Seron, Vincent ULg

Conference (2012, March 29)

Detailed reference viewed: 36 (11 ULg)
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See detailDelayed graft function does not harm the future of donation-after- cardiac-death kidney transplants
LeDinh, H; WEEKERS, Laurent ULg; BONVOISIN, Catherine ULg et al

Conference (2012, March 29)

Introduction: Delayed graft function (DGF) occurs more frequently in kidney transplants from donation after cardiac death (DCD) than from donation after brain death (DBD). We investigated the effect of ... [more ▼]

Introduction: Delayed graft function (DGF) occurs more frequently in kidney transplants from donation after cardiac death (DCD) than from donation after brain death (DBD). We investigated the effect of DGF on post-transplant outcomes in controlled DCD kidney grafts. Patients and Methods: This single-center retrospective study recruited 80 controlled DCD kidney allo- grafts which have been performed at the University Hospital of Sart Tilman, University of Liège, from Jan 2005 to Dec 2011. Results: Mean patient follow-up was 28.5 months. No primary non-function grafts were encountered. DGF rate was 36%. Overall graft survivals between groups with and without DGF were 92.4% and 95.1% at 1 year, 92.4% and 91.7% at 3 years, and 84.7% and 91.7% at 5 years (p=ns), respectively. Patients with and without DGF had the same survival rates at the corresponding time points (92.4% and 97.1%, 92.4% and 93.7%, and 84.7% and 93.7%, p=ns, respectively). Estimated glomerular filtration rate (eGFR) was significantly lower in DGF group compared to non-DGF group at hospital discharge (29 vs 42 ml/min, p=0.001) and up to 1 year post-transplant (46 vs 53 ml/min, p=0.045), but the differ- ence disappeared afterwards (50 vs 48 ml/min at 3 years, and 54 vs 53 ml/min at 5 years, p=ns). DGF did not increase the risk of acute rejection or surgical complications. 29.6% of recipients with DGF de- veloped acute rejection (biopsy-proven rejection and clinically suspected rejection) compared with 29.2% of recipients without DGF (p=ns). The rate of all surgical complications was 33.3% and 25% in recipients with and without DGF (p=ns). However, DGF prolonged significantly the length of hospitaliza- tion in DGF than non-DGF group (18.9 vs 13 days, p=0.000). Donor BMI 􏰤 30 kg/m2􏰁􏰀􏰚􏰌􏰈􏰏􏰥􏰏􏰌􏰝􏰣􏰀􏰕􏰉􏰂􏰀􏰤 30 kg/m2 and pre-transplant dialysis duration increased the risk of DGF in a multivariate logistic regression analysis. Conclusions: Apart from longer hospital stay, DGF had no deleterious impact on the future of DCD kidney allografts. Comparable graft and patient survival, renal function, rejection rate and surgical com- plications were observed between groups with and without DGF. [less ▲]

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See detailStriptease em raio-x: algumas interrelações artístico-científicas no domínio visual.
Sturnack, Lionel ULg

Conference (2012, March 28)

O striptease que propomos analisar é na verdade o título de uma obra que pertence à produção da artista italiana Benedetta Bonichi. Trata-se de uma composição mista, a meio caminho entre os raios-x e a ... [more ▼]

O striptease que propomos analisar é na verdade o título de uma obra que pertence à produção da artista italiana Benedetta Bonichi. Trata-se de uma composição mista, a meio caminho entre os raios-x e a fotografia. “Striptease” constitui uma base analítica interessante para várias razões. Com certeza, por seu caráter surpreendente, sendo uma cena erótica e ao mesmo tempo uma radiografia. Mas também e sobretudo por sua estética particular em relação aos outros artistas que desenvolvem uma técnica similar. Uma parte do nosso estudo consistirá na abordagem indispensável mesmo que breve das realizações de quatro outros artistas que trabalham com os raios-x. O propósito de nossos passos é levar em consideração o lugar da obra estudada no espaço de realizações em raio-x artístico, numa perspectiva semiótica. Pretendemos desta maneira chegar à descrição fina de “Striptease”, ou seja, conseguir por um lado estabelecer os critérios sobre os quais se correlacionam e se diferenciam os raios-x artísticos vistos e, por outro lado e graças à primeira etapa, dar conta da riqueza da obra da italiana. Desenvolveremos o estudo segundo três etapas gerais. Com a primeira, efetuaremos uma descrição de “Striptease” segundo os três eixos da leitura plástica padrão, tal como foram trabalhados por Jean-Marie Floch: cromático, eidético e topológico. Na segunda etapa, adotaremos o mesmo ponto de vista para a descrição plástica de cinco obras de quatro outros artistas: Nick Veasey, a agência Butter, Wim Delvoye e Claudio Mubarac. O interesse da segunda parte consiste em mostrar que o tipo de descrição estabelecido para “Striptease” vale nos outros casos e como se atualizam as unidades plásticas em cada realização particular, a fim de observar as suas possíveis convergências. Na última etapa, poderemos considerar a estética de cada obra à luz das atualizações plásticas e das integrações entre elas com outros patamares temáticos. Conseguiremos, finalmente, entender a pertinência e a particularidade de “Striptease” como metalinguagem crítica por meio destas considerações temáticas e plásticas. [less ▲]

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See detailIntraocular Lenses with Functionalized Surfaces by Biomolecules in Relation with Lens Epithelial Cell Adhesion
Huang, Yi-Shiang ULg

Conference (2012, March 27)

A cataract is pathology opacity of the lens or capsule of the eye, causing impairment of vision or even blindness. In 1998, it was estimated that worldwide 19.4 million people were bilaterally blind from ... [more ▼]

A cataract is pathology opacity of the lens or capsule of the eye, causing impairment of vision or even blindness. In 1998, it was estimated that worldwide 19.4 million people were bilaterally blind from age-related cataract. Surgery, with lens extraction and intraocular lens implantation, is still the only currently available treatment. More than 1.3 million cataract operations were performed in the USA in 1998 at a cost of $3.5 billion. The most common complication after implantation of intraocular lenses (IOLs) is the posterior capsular opacification (PCO) or secondary cataract. This is the result of lens epithelial cells (LECs) proliferation and their transition to mesenchymal cells. In 1997, a Sandwich theory was proposed to elucidate the developmental process of PCO. According to this model, an IOL with higher affinity to LECs will induce a less PCO. In our research, the pHEMA (Poly(2-hydroxyethyl methacrylate)) based acrylic hydrophilic polymer is subjected to the surface modification by conjugating with the bioactive peptides. The RGD sequence, known for its excellent biocompatibility, is designed to stimulate the biointegration between the LECs and the polymer implant. Our research program will focus on the evaluation of the physical, mechanical and biological properties of the lens before and after peptide grafting. These diverse tests include contact angle measurements, Atomic Force Microscopy (AFM), x-ray photoelectron spectroscopy (XPS), FTIR/ATR, Scanning Electron Microscopy (SEM), and the MTS cytotoxicity assay. [less ▲]

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See detailMercury in blood of free-ranging seals Phoca vitulina from the North Sea: Time-trend and association with environmental factors
Das, Krishna ULg; Brochoire, Charlène ULg; Chambosse, Mélanie et al

Conference (2012, March 27)

The harbour seal (Phoca vitulina) population from the North Sea has experienced various fluctuations these last decades due to habitat loss, prey fluctuation and pollution of the marine environment ... [more ▼]

The harbour seal (Phoca vitulina) population from the North Sea has experienced various fluctuations these last decades due to habitat loss, prey fluctuation and pollution of the marine environment. Recently, development of monitoring programs and non-invasive sampling techniques, including seal catches allowed blood sampling on a regular basis together with measurements of blubber thickness, body mass, sex and body length. Concentrations of total mercury (T-Hg) and other trace elements (Cd, Pb, Zn, Cu, Fe) as well as ∂13C and ∂15N values were determined by mass spectrometry in blood of 75 wild harbour seals caught in the German Wadden Sea between 1997 and 2011. ∂13C and ∂15N mean values (-17.5‰ and 18.1 ‰ respectively) were strongly similar to that measured previously in the muscle of stranded harbour seals from the Wadden Sea. In contrast, ∂15N mean value was strikingly higher than that recorded in grey seals (Halichoerus grypus) from Scotland (14.1 ‰ respectively; Habran et al. submitted.) while ∂13C values remained similar between the two seal species. These values confirmed the high trophic position of the harbour seal in the North Sea. In contrast to Cd and Pb, T-Hg in blood harbour seals reached concentrations as high as 2.1 μg.g-1 dry weight (10 times higher than the 0.21 μg.g-1 dry weight recorded for grey seals from Scotland) but depended on several factors including ∂15N values, age group and the body mass. T-Hg was detected in juveniles confirming maternal transfer to offspring and time-trend revealed no decrease of T-Hg in blood of harbour seals these last 15 years. [less ▲]

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See detailEverybody knows what IRT is... (really?)
Magis, David ULg

Conference (2012, March 27)

Item response theory (IRT) is not only a famous acronym, it also covers a broad range of statistical and psychometric models, methods, and applications in psychology and educational science. However, IRT ... [more ▼]

Item response theory (IRT) is not only a famous acronym, it also covers a broad range of statistical and psychometric models, methods, and applications in psychology and educational science. However, IRT looks somewhat misunderstood or even esoteric to the non-statisticians and non-psychometricians. The main goal of this talk is to briefly and clearly present the main aspects of traditional IRT: objectives, assumptions, basic models, and basic estimation methods. As a secondary purpose, extensions of IRT to more complex situations (polytomous data, multidimensional and hierarchical models, computerized adaptive testing, differential item functioning, nonparametric IRT) are briefly outlined. This talk will be as little technical as possible, focusing on the main concepts and applications of this theory. [less ▲]

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See detailPreparation of drug-loaded scaffolds for biomedical applications using supercritical carbon dioxide technology
Champeau, Mathilde; Jérôme, Christine ULg; Tassaing, Thierry

Conference (2012, March 25)

Detailed reference viewed: 18 (6 ULg)
See detailRelationships between structure-interfacial-functional properties: The rheology at interfaces from small to polymeric carbohydrate-based surfactants
Razafindralambo, Hary ULg

Conference (2012, March 25)

Amphiphilc molecules are one of the most important compounds in our planet owing to their fundamental role as catalysts of interfacial free energy in nature, biological systems, and manufacturated ... [more ▼]

Amphiphilc molecules are one of the most important compounds in our planet owing to their fundamental role as catalysts of interfacial free energy in nature, biological systems, and manufacturated products [1]. Their chemical structure and configuration, which governs their properties and activities, may be classified in small, intermediate, and large sizes. To better understand the effect of such a parameter, the behaviors of various carbohydrate-based surfactants, from small to polymeric molecular structures at the air-water interface, and in bulk liquid for their ability to form and stabilize related colloidal systems like micelles and foams have been investigated. In particular, rheological properties including elasticity and viscosity components at the air-water interface have been determined by oscillatiory mode under different oscillation frequency and surfactant concentration conditions using a pending drop tensiometer system. Their micellar and foaming properties have been characterized and evaluated in terms of CMC-micelle size and formation-stability, respectively. Reference: [1] Razafindralambo, H.; Blecker, C.; Paquot, M., Screening of Basic Properties of Amphiphilic Molecular Structures for Colloidal System Formation and Stability. In Amphiphiles: Molecular Assembly and Applications, Ed. R. Nagarajan, American Chemical Society: 2011;. Vol. 1070, pp 53-66. [less ▲]

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See detailLa presse liégeoise dans la tourmente (1914-1918): analyse de cas
Delhalle, Sophie ULg

Conference (2012, March 24)

Cette communication avait pour but de présenter l'histoire du quotidien liégeois d'information "Le Télégraphe" paru d'aout 1915 à novembre 1918 et de tenter de définir son lectorat et son rayon de ... [more ▼]

Cette communication avait pour but de présenter l'histoire du quotidien liégeois d'information "Le Télégraphe" paru d'aout 1915 à novembre 1918 et de tenter de définir son lectorat et son rayon de diffusion. [less ▲]

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See detailAntidepressant use and fracture risk: a meta-analysis
Bruyère, Olivier ULg

Conference (2012, March 24)

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See detail"L'acteur et le badaud. Sur deux corps de cinéma (années 1900)"
Belloi, Livio ULg

Conference (2012, March 24)

Le cinématographe – c’est une évidence – n’est pas né avec la notion d’acteur. L’acteur de cinéma est une instance qui s’est inventée progressivement, au registre de l’Histoire. Dans le cadre de cette ... [more ▼]

Le cinématographe – c’est une évidence – n’est pas né avec la notion d’acteur. L’acteur de cinéma est une instance qui s’est inventée progressivement, au registre de l’Histoire. Dans le cadre de cette communication, j'examine quelques-unes des modalités d’émergence de cette figure singulière. Dans le premier cinéma de fiction, tel qu’il s’impose au cours des années 1900, l’acteur de cinéma, comme corps en jeu, entre virtuellement en concurrence, tout particulièrement en cas de tournage en plein air, avec celui qui fut l’homme ordinaire du cinéma des tout premiers temps, à savoir le badaud, qu’il finira évidemment par supplanter. Encore cette substitution ne s’est-elle pas opérée instantanément : elle présente, elle aussi, une dimension forcément historique. Partant de là, il s’agit d’examiner une forme de régime transitoire dans les relations mettant aux prises ces deux corps de cinéma que sont le badaud et l’acteur. Pour ce faire, l’accent est placé moins sur des films que sur des moments d’images (plans ou fragments de plan) puisés dans quelques films des années 1900, dont "Daring Daylight Burglary" (F. Mottershaw, Sheffield Photographic Company, 1903), "The Ex-Convict" (E. S. Porter, Edison, 1904) et "Mésaventures d’un cycliste myope" (Éclipse, 1907). Dans ces quelques moments d’images, la coprésence du badaud et de l’acteur témoigne d’un état hybride ou clivé de la scène de cinéma : un état dans lequel l’acteur, institué en foyer d’attention, n’est pourtant pas encore mis en situation de monopoliser l’espace de la représentation ; un état dans lequel il doit composer avec la présence incidente du badaud, lequel incarne exemplairement la part d’hétérogène qu’enferme, à ses origines, la scène de cinéma. [less ▲]

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See detailLes parlementaires québecois et wallons
Dodeigne, Jérémy ULg

Conference (2012, March 23)

Detailed reference viewed: 60 (8 ULg)
See detailHow to define responders in osteoarthritis?
Bruyère, Olivier ULg

Conference (2012, March 23)

Detailed reference viewed: 18 (0 ULg)
See detailNovel perspectives in the definition of responders in trials of osteoarthritis
Bruyère, Olivier ULg

Conference (2012, March 23)

Detailed reference viewed: 25 (0 ULg)
See detailTemporalité et "subjectivité" dans le Sein und Zeit de Martin Heidegger
Pieron, Julien ULg

Conference (2012, March 23)

Detailed reference viewed: 21 (1 ULg)
See detailHealth claims for nutriceuticals products in the field of cartilage and joint
Bruyère, Olivier ULg

Conference (2012, March 23)

Detailed reference viewed: 10 (1 ULg)
See detailMeet-The-Expert Sessions : Clinical utility of bone turnover markers
CAVALIER, Etienne ULg

Conference (2012, March 23)

Detailed reference viewed: 6 (0 ULg)
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See detailLes TICe, quelle plus-value pour l’apprentissage ?
Georges, François ULg

Conference (2012, March 23)

Les cours en ligne sont-ils efficaces ? Dans l'affirmative, dans quelles conditions ? Dans cette allocution, nous présentons l'état de la recherche sur l'efficacité des cours en ligne. Nous passons en ... [more ▼]

Les cours en ligne sont-ils efficaces ? Dans l'affirmative, dans quelles conditions ? Dans cette allocution, nous présentons l'état de la recherche sur l'efficacité des cours en ligne. Nous passons en revue les facteurs propices à l'apprentissage en ligne et les illustrons à travers des cours développés notamment à l'Université de Liège. Nous terminons notre exposé par une brève ouverture sur le monde du "mobile Learning" et tentons d'en présenter les plus-values par la présentation d'applications susceptibles de soutenir l'apprentissage. [less ▲]

Detailed reference viewed: 305 (30 ULg)
See detailLes figures du compromis dans les sociétés islamiques
Nachi, Mohamed ULg

Conference (2012, March 23)

Analyser la place du compromis dans les sociétés et la culture islamique

Detailed reference viewed: 48 (1 ULg)
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See detailThe connection between inner and outer debris disks probed by infrared interferometry
Absil, Olivier ULg

Conference (2012, March 22)

The far-infrared surveys of nearby main sequence stars performed since the launch of IRAS have shown that a significant fraction of main sequence stars are surrounded by cold dust populations. These ... [more ▼]

The far-infrared surveys of nearby main sequence stars performed since the launch of IRAS have shown that a significant fraction of main sequence stars are surrounded by cold dust populations. These surveys are now culminating with the the DUNES and DEBRIS key projects of the Herschel Space Observatory, which is more sensitive than ever and is able to detect cold dust populations with densities similar to that of the solar system Kuiper belt. However, little is known about the occurence of warm dust populations, the equivalent of our zodiacal cloud. Since 2005, high-precision infrared interferometers have opened a new way to directly resolve these exozodiacal dust populations. Interferometric observations enable to reach dynamic ranges (larger than 100:1) that are generally not achievable with classical spectro-photometric observations. We are currently carrying out a survey to characterise the hot dust populations around main sequence stars. The first results of this survey, performed on the CHARA array with the FLUOR instrument, will be presented in this talk. The results are based on a magnitude-limited sample of stars surrounded by cold dust and on an equivalent sample of stars showing no cold dust emission. The statistics for the occurence of bright exozodiacal disks will be presented, and compared with the Spitzer and Herschel results. The possible (dynamical) connections between the two populations will be discussed. We will also review the results obtained by other interferometers and discuss the on-going projects. [less ▲]

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See detailRickert On Historical Sciences: A Critical Appraisal
Dewalque, Arnaud ULg

Conference (2012, March 22)

In this talk I discuss a significant objection that has been raised against the view of historical sciences held by Heinrich Rickert: the accusation of “fruitless formalism”. This accusation has been ... [more ▼]

In this talk I discuss a significant objection that has been raised against the view of historical sciences held by Heinrich Rickert: the accusation of “fruitless formalism”. This accusation has been expressed by a large number of thinkers, including for instance Wilhelm Wundt, Edmund Husserl, Max Frischeisen-Köhler and Eduard Spranger. As one knows, Rickert answered the objection in the last editions of his major book, "The Limits of the Concept Formation in Natural Sciences". His strategy was, first, to distance himself from a certain interpretation I will call the “formal view”, and, second, to argue for the fruitfulness of his own, more sophisticated view. However, as suggested by other representatives of the Bade School (like Richard Kroner), it is doubtful that the Rickert view perfectly succeeded in resorbing the shortcomings of the formal view. - In the first, introductive section I will put the formalism-problem in connection with a definite sub-set of issues within the broader framework of the philosophy of history (1). In the second and third sections I will address two questions related, respectively, to the nature of historical form (2) and to the nature of historical material (3). I will then contrast the formal view with the Rickert view on the one hand and with Kroner’s contentual view on the other hand. In the last, conclusive section I will try to draw some general implications of the formalism-controversy (4). [less ▲]

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Peer Reviewed
See detailReforming the Postal Universal Service
Gautier, Axel ULg; Poudou, Jean-Christophe

Conference (2012, March 22)

The postal sector has dramatically changed in the recent years with the ongoing liberalization process and the increased competitive pressures from alternative communication channels (e-substitution ... [more ▼]

The postal sector has dramatically changed in the recent years with the ongoing liberalization process and the increased competitive pressures from alternative communication channels (e-substitution). These two effects concur to decrease the mail volume handled by the historical operator which in turn may threaten the financial viability of the universal service and may call for a reform of the universal service. This paper examines the question of reforming the postal universal service, first by considering that the universal service remains confined in the postal word and, latter, by defining a universal service that includes postal and electronic technologies. [less ▲]

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See detailFrom universal to local: celebrating new saints in the Southern Netherlands
Delfosse, Annick ULg

Conference (2012, March 22)

Detailed reference viewed: 30 (5 ULg)
See detailLa fédéralisation des allocations familiales et son impact sur la répartition des compétences
Behrendt, Christian ULg

Conference (2012, March 22)

Communication orale donnée le 22 mars 2012 à "l'Université de printemps" organisée par La Ligue des Familles et consacrée à la défédéralisation projetée de la compétence des allocations familiales, telle ... [more ▼]

Communication orale donnée le 22 mars 2012 à "l'Université de printemps" organisée par La Ligue des Familles et consacrée à la défédéralisation projetée de la compétence des allocations familiales, telle que décidée dans l'accord institutionnel du 11 octobre 2011. [less ▲]

Detailed reference viewed: 174 (13 ULg)
Peer Reviewed
See detailPartnership in medicine : how to promote the collaboration between general practitioners, occupational physicians and social insurance physicians
Mairiaux, Philippe ULg; Vanmeerbeek, Marc ULg; Schippers, Nathalie ULg et al

Conference (2012, March 22)

Introduction: Many situations justify a close collaboration between GP, OP and SIP. Health problems impact work activity and vice versa. An altered health situation confronts workers with the risk of ... [more ▼]

Introduction: Many situations justify a close collaboration between GP, OP and SIP. Health problems impact work activity and vice versa. An altered health situation confronts workers with the risk of exclusion from the labour market. An interprofessional collaboration is thus needed to promote a more active policy of rehabilitation of workers on long term sickness absence. The Belgian Ministry of Employment initiated this study to identify communication channels and tools that could support collaboration among those health professionals. Methods: To this purpose, 8 nominal groups were organised to think about proposals to improve interdisciplinary collaboration. In sum 42 GP’s, 16 OP’s and 16 SIP’s participated in the discussions. For the elaboration of the final proposals, the research team relied on a multidisciplinary expert group. Results: An asymmetric relation was observed; each group expressed the need to receive information from the two others, but proposals to transfer information were rare. Exchanges in the groups showed that reciprocal ignorance is important and communication modalities are poor. A profound revision of the information transmission procedures seemed necessary. Several practical proposals were made to improve communication in case of sickness absence over three months, to allow information transfer and to promote mutual respect between the three disciplines. Other proposals considered professional training, and professional competencies which need to be better defined. Discussion: Misconceptions of the role of the different professional disciplines form a barrier to an effective collaboration. Technical and regulatory measures alone will not bring about a real promotion of interdisciplinary collaboration. The proposals arising from the study will contribute to increase reciprocal knowledge between professionals from the three disciplines and thus form the basis of a more effective collaboration. In turn, the experience of collaboration could have a beneficial effect on the reciprocal representations of each partner role. [less ▲]

Detailed reference viewed: 41 (11 ULg)
See detailVitamine D et diabète
CAVALIER, Etienne ULg; MATHIEU, C

Conference (2012, March 22)

Detailed reference viewed: 37 (2 ULg)
See detailDevelopment of diamond AGPM coronagraphs for VISIR and NACO
Delacroix, Christian ULg; Habraken, Serge ULg; Karlsson, Mikael et al

Conference (2012, March 22)

Detailed reference viewed: 36 (5 ULg)
Peer Reviewed
See detailL'Éducation au cinéma en Belgique : analyse institutionnelle d'un territoire fragmenté
Van Cauwenberge, Geneviève ULg

Conference (2012, March 22)

Mon intervention entend constituer une contribution à l’histoire institutionnelle de l’enseignement du cinéma en Belgique francophone. Jusqu’ici l’histoire de l’enseignement du cinéma en Belgique s’est ... [more ▼]

Mon intervention entend constituer une contribution à l’histoire institutionnelle de l’enseignement du cinéma en Belgique francophone. Jusqu’ici l’histoire de l’enseignement du cinéma en Belgique s’est surtout élaborée par le biais de l’évocation des personnalités marquantes qui en ont été les acteurs (c’est par exemple dans le cadre d’un texte consacré à André Delvaux que Paul Davay évoque les débuts de l’enseignement du cinéma en Belgique dans son ouvrage, Cinéma de Belgique). L’histoire institutionnelle de l’enseignement du cinéma reste, quant à elle, largement à écrire. La mise en place de l’enseignement du cinéma en Belgique est due à diverses instances: la Cinémathèque Royale de Belgique, le Ministère de la Communauté française, les écoles d’enseignement supérieur non-universitaire et les universités. On examinera le rôle respectif de chacune de ces instances en évoquant leurs divergences de vue mais aussi leurs diverses collaborations. Faisant retour à des textes fondateurs, tel le rapport rédigé en 1966 par Victor Bachy pour l’Unesco, on montrera comment les clivages entre enseignement laïc et confessionnel qui divisent le paysage scolaire francophone en Belgique se sont répercutés au niveau de l’enseignement du cinéma, contribuant à son éparpillement. On envisagera les conceptions respectives de la culture cinématographique et des finalités de l’enseignement du cinéma qui se sont développées dans chacun des réseaux d’enseignement. On verra aussi comment les diverses écoles et universités ont défini leur spécificité en matière de contenu d’enseignement et d’approche du cinéma (théorique, pratique, pratico/théorique) pour se positionner les unes par rapport aux autres dans le champ de l’enseignement du cinéma en Belgique. [less ▲]

Detailed reference viewed: 86 (12 ULg)
Peer Reviewed
See detail3-D cinéma : Quelques reliefs du discours du cinéma total
Tomasovic, Dick ULg

Conference (2012, March 21)

Detailed reference viewed: 27 (2 ULg)
Full Text
See detailChemically resistant encapsulation for MEMS release
Stoukatch, Serguei ULg; Tooten, ester; Axisa, Fabrice ULg et al

Conference (2012, March 21)

We have proposed and explored a novel sequence in MEMS fabrication process flow. The novel MEMS fabrication process flow can be shortly described as a “packaging first, MEMS release second”. We propose to ... [more ▼]

We have proposed and explored a novel sequence in MEMS fabrication process flow. The novel MEMS fabrication process flow can be shortly described as a “packaging first, MEMS release second”. We propose to package the MEMS device first (die mount, wire bonding and encapsulation) and to perform the MEMS release as the last step in the fabrication process flow. The standard route for IC manufacturing is, that the die packaging is the last step [1]. Such approach can’t be directly transferred and used for MEMS fabrication [2]. The main reason for that, that the MEMS device after the release becomes vulnerable to any physical and chemical exposure. Such exposure can occur during transportation, handling or any post-processing (incl. the packaging). [less ▲]

Detailed reference viewed: 41 (1 ULg)
See detailStatut unique : la fin d’une époque?
Pichault, François ULg

Conference (2012, March 21)

Detailed reference viewed: 43 (12 ULg)
See detailNew insights on the quasars central region from microlensed quasars
Sluse, Dominique ULg; Hutsemekers, Damien ULg; Wambsganss, Joachim et al

Conference (2012, March 21)

Our detailed understanding of the working engine of quasars is still incomplete. Several basic questions remain such as: How is the supermassive black hole in the center of quasars fed ? What is the ... [more ▼]

Our detailed understanding of the working engine of quasars is still incomplete. Several basic questions remain such as: How is the supermassive black hole in the center of quasars fed ? What is the geometry and kinematics of the gas flow near the black hole ? The slow advances in answering these questions during the last decades advocates for new research methods. The analysis of the microlensing-induced deformations of multiply-imaged quasars is one such technique. It starts to be used as a tool to measure the temperature profile of the accretion disk, to estimate the size and study the geometry of the region emitting the broad emission lines. However, up to now, these applications have concerned mostly a handful of systems. In this talk, I will discuss the occurence of microlensing in a sample known strongly-lensed quasars and present the variety of emission-line deformations which is observed. I will also explain how spectroscopic follow-up of strongly-lensed quasars in the survey era should provide important insights on the quasar structure. [less ▲]

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See detailExamen clinique de l'épaule
Kaux, Jean-François ULg

Conference (2012, March 21)

Detailed reference viewed: 56 (24 ULg)
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See detailKeplerization of Motion in Any Central Force Field
Martinusi, Vladimir ULg; Gurfil, Pini

Conference (2012, March 20)

Detailed reference viewed: 13 (5 ULg)
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See detailUniversal Functions in the Study of the Relative Orbital Motion
Condurache, Daniel; Martinusi, Vladimir ULg

Conference (2012, March 20)

Detailed reference viewed: 13 (0 ULg)
See detailLa Carte des Sols de la Belgique, outil d'estimation de la pression urbanistique sur les sols
Legrain, Xavier ULg; Michel, Brieuc ULg; Bock, Laurent ULg et al

Conference (2012, March 20)

Ces dernières décennies, des pressions de tout ordre ont induit une forte expansion de l’urbanisation en Europe, à laquelle la Belgique n’échappe pas. L’imperméabilisation des sols a par ailleurs été ... [more ▼]

Ces dernières décennies, des pressions de tout ordre ont induit une forte expansion de l’urbanisation en Europe, à laquelle la Belgique n’échappe pas. L’imperméabilisation des sols a par ailleurs été identifiée comme une des principales menaces pesant sur eux. Au-delà du constat de l’évolution des surfaces artificialisées en Wallonie, l’objectif de cette étude est d’identifier les sols les plus soumis à ce phénomène. L’élaboration de la Carte Numérique des Sols de Wallonie (CNSW) – à partir d’un document historique, la Carte des Sols de la Belgique levée à grande échelle entre 1947 et 1991 – et de la Carte Numérique d’Occupation des Sols de Wallonie ouvre des perspectives intéressantes à ce sujet. Plus spécifiquement, l’utilisation de cartes d’aptitude des sols pour l’agriculture, dérivées de la CNSW, met en évidence l’impact de l’artificialisation sur la réserve en sols de meilleure potentialité agricole (figure 1). Cette dernière a diminué de 5 % à l’échelle de la Wallonie suite à l’artificialisation des sols ces 60 dernières années. La réalité est plus contrastée à l’échelle locale. La moitié des 262 communes wallonnes se situe en deçà, tandis que d’autres ont perdu (du point de vue agricole) jusqu’à 50 % de leurs meilleurs sols, par ailleurs initialement fortement présents sur leur territoire. Autre constat : si la moitié des communes subit une artificialisation uniforme de ses sols, 20 % d’entre elles voient leurs meilleurs sols préférentiellement artificialisés par rapport à ceux de potentialité agricole moindre.Une analyse spatiale fine à plus grande échelle (figure 2) ouvre la voie à la compréhension des phénomènes en jeu et in fine à l’élaboration de recommandations face à la concurrence inévitable entre deux fonctions essentielles des sols : la production agricole et le support des activités humaines. [less ▲]

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See detailDrowsiness monitoring: a matter of life and death !
Wertz, Jérôme ULg; François, Clémentine ULg; Verly, Jacques ULg

Conference (2012, March 19)

Detailed reference viewed: 48 (24 ULg)
See detailA Two Parameter Kinematic Theory for the Shear Behavior of Deep Beams
Mihaylov, Boyan ULg; Bentz, Evan; Collins, Michael

Conference (2012, March 19)

Detailed reference viewed: 70 (3 ULg)
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See detailInsuffisance rénale de la personne âgée
Krzesinski, Jean-Marie ULg

Conference (2012, March 17)

•L’insuffisance rénale avec l’âge n’est pas une fatalité. •Une prévention des FRCV est indispensable. •Une identification précoce d’une réduction de GFR (mesure précise GFR?) et de la présence d’une ... [more ▼]

•L’insuffisance rénale avec l’âge n’est pas une fatalité. •Une prévention des FRCV est indispensable. •Une identification précoce d’une réduction de GFR (mesure précise GFR?) et de la présence d’une protéinurie est capitale. •Approche multidisciplinaire et précoce surtout chez le sujet âgé! Tester autonomie et dénutrition. •Référence précoce pour décider ensemble si évolutivité et SN traitement de suppléance. •Décider de lancer un traitement de suppléance nécessite une réflexion à plusieurs: le patient, sa famille, le médecin de famille, l’équipe de néphrologie en abordant la QOL •On peut tenter si doute, avec arrêt dès que la situation s’aggrave! [less ▲]

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See detailInsuffisance rénale de la personne âgée
Krzesinski, Jean-Marie ULg

Conference (2012, March 17)

L’insuffisance rénale avec l’âge n’est pas une fatalité. Il faut prévenir très tôt les facteurs de risque cardio-vasculaire et les corriger au mieux pour éviter que ces facteurs n’agissent plus tard dans ... [more ▼]

L’insuffisance rénale avec l’âge n’est pas une fatalité. Il faut prévenir très tôt les facteurs de risque cardio-vasculaire et les corriger au mieux pour éviter que ces facteurs n’agissent plus tard dans la vie et soient des facteurs de comorbidité très importants favorisant la dégradation fonctionnelle rénale et l’évolution vers une insuffisance rénale très sévère exposant le patient à un risque cardio-vasculaire, à des techniques de suppléance de la fonction rénale et à un décès plus rapide avec perte préalable de la qualité de vie. Il faut donc identifier précocement la réduction de la GFR et l’apparition d’une protéinurie, agir de concert ensemble sur de nombreux facteurs pour ralentir la progression. Ces facteurs sont souvent des facteurs de risque cardio-vasculaire, donc on fait un double coup en les corriger. La référence précoce lorsque vous remarquez une évolutivité de la GFR vers la baisse pour décider ensemble si un traitement de suppléance doit être lancé. Celui-ci ne sera décidé qu’en concertation commune si nous avons le temps de l’établir après avoir évaluer des niveaux d’autonomie de nutrition, de risque cardio-vasculaire, et tout cela intégré dans le côté social et environnemental du patient. Il faut rappeler ici l’importance des trajets de soins à proposer à tout patient insuffisant rénal en dessous de 45 ml/min, moment stratégique pour que le néphrologue puisse en partenariat avec le médecin généraliste contrer les perturbations de l’insuffisance rénale terminale. [less ▲]

Detailed reference viewed: 78 (5 ULg)
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See detailStrategic Bypass Deterrence
Bloch, Francis; Gautier, Axel ULg

Conference (2012, March 17)

In liberalized network industries, entrants can either compete for service using the existing infrastructure (access) or deploy their own infrastructure capacity (bypass). In this paper, we demonstrate ... [more ▼]

In liberalized network industries, entrants can either compete for service using the existing infrastructure (access) or deploy their own infrastructure capacity (bypass). In this paper, we demonstrate that, under the threat of bypass, the access price set by an unregulated and vertically integrated incumbent is compatible with productive efficiency. This means that the entrant bypasses the existing infrastructure only if it can produces the network input more efficiently. The incumbent lowers the access price compared to the ex-post efficient level to strategically deter inefficient bypass by the entrant. Accordingly, from a productive efficiency point of view, there is no need to regulate access prices when the entrant has the option to bypass. Despite that, we show that restricting the possibilities of access might be profitable for consumers. [less ▲]

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See detailComment mieux concilier le Sport et l’Education ?
Cloes, Marc ULg

Conference (2012, March 17)

Nombre d'articles parus dans des quotidiens soulignent qu'une plus grande place devrait être faite au Sport dans l'Education. Dans cette conférence, il s'agira tout d'abord de redéfinir les différents ... [more ▼]

Nombre d'articles parus dans des quotidiens soulignent qu'une plus grande place devrait être faite au Sport dans l'Education. Dans cette conférence, il s'agira tout d'abord de redéfinir les différents concepts concernés avant de mettre en évidence certains paradoxes constatés à partir de résultats de recherches récentes. L'objectif consistera à mettre clairement en évidence la priorité à accorder au développement d'une culture de l'activité physique, moins sujettes aux dérapages constatés actuellement dans le développement d'un sport ultra compétitif. L'exposé se termine par la description de pistes d'actions rassemblant tous les acteurs de la société et visant à donner un visage plus accessible à la santé que l'activité physique permet de préserver. [less ▲]

Detailed reference viewed: 133 (13 ULg)
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Peer Reviewed
See detailSocial Cooperatives: When Social Enterprises Meet the Cooperative Tradition
Defourny, Jacques ULg

Conference (2012, March 16)

Detailed reference viewed: 53 (6 ULg)
See detailLiterary mediations, imaginaries and sociological approaches
Saint-Amand, Denis ULg; Glinoer, Anthony

Conference (2012, March 16)

Detailed reference viewed: 15 (3 ULg)
Peer Reviewed
See detail"Frottements d'images : les films tardifs de Paul Sharits"
Belloi, Livio ULg

Conference (2012, March 16)

La notion de friction implique forcément celle de contact, ce qui, à l’évidence, intéresse au tout premier chef les images à caractère photochimique. Dans le cadre de cette communication, j'interroge la ... [more ▼]

La notion de friction implique forcément celle de contact, ce qui, à l’évidence, intéresse au tout premier chef les images à caractère photochimique. Dans le cadre de cette communication, j'interroge la notion de friction dans le champ du cinéma d’expérimentation, en me concentrant plus particulièrement sur les films du cinéaste (et peintre) américain Paul Sharits (1943-1993). À partir de "Color Sound Frames" (1974), l’œuvre de Sharits connaît une mutation profonde. Pour une large part, le travail du cinéaste consistera désormais à refilmer des fragments de pellicule déjà impressionnés, images appartenant de facto à la catégorie du déjà-vu. Pour ce faire, Sharits mobilise un écran transparent et un projecteur trafiqué, dont il a ôté et la griffe, et le mécanisme d’obturation. Retournant l’une contre l’autre les deux machines sur lesquelles se fonde le spectacle cinématographique, procédant par « anti-cadrage » et reprise de vue, le cinéaste orchestre, au plus intime de ses œuvres, d’intenses rapports de friction entre le film second (ou film filmé) et le film premier (ou film d’accueil, celui qui se déroule sous nos yeux) ; il accuse, de manière très méthodique, les discordances qui affectent les deux niveaux de la représentation, que ce soit en termes de vitesse, de texture ou de stabilité des motifs. Ma communication se donne pour but d’étudier, dans tous ses enjeux, les frictions internes qui traversent les films tardifs de Paul Sharits, dont "Tails" (1976) et "Bad Burns" (1982). Dans le cas de ce dernier film, le rapport de friction s’exacerbe, se déporte et tourne au conflit ouvert entre l’image et la source lumineuse censée lui donner vie : il se solde ponctuellement par des destructions apparentes du support filmique, petits désastres figuratifs qui ont paradoxalement valeur, selon Sharits, d’actes analytiques à part entière. [less ▲]

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See detailPossibilités et limites des nez électroniques pour la mesure des odeurs.
Nicolas, Jacques ULg; Delva, Julien

Conference (2012, March 15)

The communication aimed at presenting the potential of electronic noses to monitor environmental odours. The advantages and the limits of the concept were presented together with the point of view of a ... [more ▼]

The communication aimed at presenting the potential of electronic noses to monitor environmental odours. The advantages and the limits of the concept were presented together with the point of view of a company specialized in odour measurement. [less ▲]

Detailed reference viewed: 76 (7 ULg)
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See detailUse of microbial biosensors to detect substrate heterogeneities at the single cell level and assess microbial viability: Validation of a mini-bioreactor platform
Brognaux, Alison ULg; Neubauer, Peter; Twizere, Jean-Claude ULg et al

Conference (2012, March 15)

The basic principle adopted in our studies is to use substrate limitation responsive biosensors in order to detect spatial glucose heterogeneities inside industrial bioreactors (whole-cell biosensor ... [more ▼]

The basic principle adopted in our studies is to use substrate limitation responsive biosensors in order to detect spatial glucose heterogeneities inside industrial bioreactors (whole-cell biosensor). Indeed, such heterogeneities cause a lowering of the biomass yield and an increase of by-products concentration. In this work, we have used these biosensors for the elaboration of a mini-bioreactor platform that can be used as a scale-down tool. Three green fluorescent protein (GFP) transcriptional reporters have been chosen in Escherichia coli, i.e. uspA::gfp, csiE::gfp and yciG::gfp. Our previous studies have shown that these kinds of promoters are induced in response of substrate limitation and exhibit a strong fluorescence attenuation when cultivated in heterogeneous bioreactors. This sensitivity to substrate limitation has been confirmed in the case of the csiE and yciG biosensors. A mini scale-down platform has been proposed as a high throughput tool to investigate rapidly the usefulness of a given microbial biosensor. This platform is composed of shake flask able to operate in fed-batch mode either by using the slow release or the intermittent feeding principle. The first system is based on a commercial package (Enbase) based on the enzymatic release of glucose in the medium. The Enbase system allows the generation of a very smooth glucose profile without any perturbations. For comparison purpose, we have also used an intermittent feeding that induces strong fluctuation at the level of the glucose and the dissolved oxygen concentration. Local heterogeneities have thus been reproduced at the level of these mini-bioreactors and these one have caused a decrease of GFP expression, as in conventional scale-down reactor. The presence of GFP in supernatants has also been noticed and seems to be correlated with the substrate limitation signal for the three cultivation systems considered in this work (i.e., chemostat, conventional and mini-bioreactors) and with the membrane permeability. [less ▲]

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See detailBiomarkers of renal disease
CAVALIER, Etienne ULg

Conference (2012, March 15)

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See detailSensitivity of the Oxygen Dynamics in the Black Sea North Western Shelf to physical and biogeochemical processes : 3D model approach
Capet, Arthur ULg; Beckers, Jean-Marie ULg; Grégoire, Marilaure ULg

Conference (2012, March 13)

The presentation evidences the role of benthic oxygen consumption in the seasonal hypoxia afecting the Norht western shelf of the Black Sea. Spatial variability of related processes is evidenced and ... [more ▼]

The presentation evidences the role of benthic oxygen consumption in the seasonal hypoxia afecting the Norht western shelf of the Black Sea. Spatial variability of related processes is evidenced and finally interanual variability of hypoxia severity is quantified and related to nitrogen riverine inputs. [less ▲]

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See detailAn overview of the CAT: framework, R package, and applications
Magis, David ULg

Conference (2012, March 12)

Computerized adaptive testing (CAT) is an efficient method to administer psychometric or educational tests and questionnaires. Unlike the standard fixed (“paper-and-pencil”) tests, items in a CAT are ... [more ▼]

Computerized adaptive testing (CAT) is an efficient method to administer psychometric or educational tests and questionnaires. Unlike the standard fixed (“paper-and-pencil”) tests, items in a CAT are iteratively and optimally selected within a bank of available items, on the basis of previously administered items and the current ability estimate of the examinee. This general approach has several assets with respect to fixed tests: it reduces the risk of fraud, it allows for individualized questionnaires according to the examinee’s ability level, and fewer items must be administered to reach the same level of precision in the ability estimates. The purpose of this talk is threefold. First, a general overview of CAT is proposed and its main principles are quickly outlined. Second, a recently developed R package, called catR, is briefly presented and its functionalities are described. Finally, two applications are discussed. The first application is a live demonstration of catR, by using its by-default item bank about English aptitude assessment, and several CAT options. The second application focuses on the on-line testing platform Concerto, a web interface for the development and testing of CAT sessions that uses catR as underlying computational package. The R package catR was jointly developed with Gilles Raîche (Université du Québec à Montréal, Canada). The platform Concerto is under development by The Psychometrics Centre (Cambridge University, UK) under the supervision of Michal Kosinski and John Rust. [less ▲]

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See detailThe long period eccentric orbit of the particle accelerator HD167971 revealed by long baseline interferometry
De Becker, Michaël ULg

Conference (2012, March 12)

Particle acceleration and non-thermal emission processes in colliding-wind massive binaries constitute key issues in massive stars physics. The investigation of such processes requires a good knowledge of ... [more ▼]

Particle acceleration and non-thermal emission processes in colliding-wind massive binaries constitute key issues in massive stars physics. The investigation of such processes requires a good knowledge of their stellar, stellar wind and orbital parameters. In this short contribution, I will present the latest results related to the case of HD167971, a system recently resolved by the VLTI. The information on the separation and on the luminosity ratio derived from these observations will also be discussed in the context of the so-called 'standard scenario' for particle acceleration and non-thermal processes in massive stars. [less ▲]

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See detailMoyens et enjeux d'une approche didactique des Illuminations
Saint-Amand, Denis ULg

Conference (2012, March 10)

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See detailThird ventricle colloid cysts
REUTER, Gilles ULg; SCHOLTES, Félix ULg; LENELLE, Jacques ULg et al

Conference (2012, March 10)

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See detailOpinion publique et nucléaire : critique et dépassement
Mormont, Marc ULg

Conference (2012, March 10)

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See detailLe Rôle des revues interdisciplinaires dans les études doctorales
Letawe, Céline ULg

Conference (2012, March 10)

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Peer Reviewed
See detailLong-term evaluation of spinal cord stimulation for neuropathic/vascular pain
WANET, Thomas; Kaschten, Bruno ULg; DUBUISSON, Annie ULg et al

Conference (2012, March 10)

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Peer Reviewed
See detailSolitary fibrous tumour of the vagus nerve
SCHOLTES, Félix ULg; SCHOLSEM, Martin; Martin, Didier ULg

Conference (2012, March 10)

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See detailAnalysis of virgin olive oil volative fraction from two distinct geographical areas of eastern Morocco
Tanouti, K.; Serghini Caid, H.; Abid, M. et al

Conference (2012, March 09)

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Peer Reviewed
See detailL’Europe peut-elle faire le poids face aux puissances émergentes ?
Santander, Sébastian ULg

Conference (2012, March 09)

La communication porte sur le défi que représente les puissances émergentes pour l'Europe comme acteur des relations internationales.

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See detailReview of M-I coupling and auroral emissions at the outer planets
Grodent, Denis ULg

Conference (2012, March 09)

The bulk morphology of Jupiter's and Saturn's UV aurorae is conveniently divided into three components: 1) the main emission (main oval), 2) the satellites auroral footprints (equatorward of the main ... [more ▼]

The bulk morphology of Jupiter's and Saturn's UV aurorae is conveniently divided into three components: 1) the main emission (main oval), 2) the satellites auroral footprints (equatorward of the main emission): Io, Europa and Ganymede for Jupiter and Enceladus for Saturn, 3) the polar emissions (poleward of the main emission).This schematic view is already providing useful information on the giant planets aurorae. However, a quick inspection of HST and Cassini UV images directly shows that this simplified classification does not really match the complex morphology of the auroral emissions. As an example, in the case of Jupiter's UV aurorae, it appears that the main emission is not forming an oval, not even a closed shape; it is far from uniform and its position and size vary with time and depend on the viewing geometry. A secondary emission appears equatorward of the main emission and many small scale features regularly appear, some of them periodically. Satellites auroral footprints themselves appear to be much more intricate than predicted by present models. These footprints are actually multiple, their location and number vary periodically with time and with the satellites orbital longitude. The polar emissions are also much more complicated than predicted. Each of the above effects is related to a specific physical phenomenon in the atmosphere, the magnetosphere, or even in the planet's interior. For instance, the spatial distribution of the satellites auroral footprints made it possible to demonstrate the existence of a magnetic field anomaly near the surface of Jupiter's northern hemisphere. Observations which might appear insignificant, like the multiplicity of the satellites footprints or their periodicity are actually extremely valuable because they reveal the complexity of the interaction, in this case between a moon and the magnetospheric plasma of the planet around which it is orbiting. The same applies to small scale auroral structures which depict crucial magnetospheric processes like hot plasma injection, flux-tube interchange or magnetic reconnection mechanisms. The growing HST and Cassini databases are shedding new light on the origin of Jupiter's and Saturn's aurorae. Mechanisms that we thought could be taken for granted may even be challenged. [less ▲]

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See detailUne approche par compétences : Introduction, bénéfices et écueils – Illustrations par le cas de l’ULg -
Poumay, Marianne ULg

Conference (2012, March 08)

Dédiée à un public d'enseignants-chercheurs majoritairement français, cette conférence abordait l'intérêt du concept de compétence pour décrire des programmes dans l'enseignement supérieur, mais aussi ... [more ▼]

Dédiée à un public d'enseignants-chercheurs majoritairement français, cette conférence abordait l'intérêt du concept de compétence pour décrire des programmes dans l'enseignement supérieur, mais aussi pour les ré-organiser et pour y mettre en œuvre des méthodes innovantes et clairement centrées sur l'apprentissage des étudiants. La question de l'évaluation de ces compétences y a aussi été effleurée. [less ▲]

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See detailAlcohol and Youth : good practices in prevention in Wallonia
Gavray, Claire ULg

Conference (2012, March 08)

Detailed reference viewed: 9 (3 ULg)