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See detailFélix Fénéon : de l’animation à la naturalisation critique
Saint-Amand, Denis ULg

Conference (2014, June 12)

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See detailL'atmosphère de Mars
Stiepen, Arnaud ULg

Conference given outside the academic context (2014)

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Peer Reviewed
See detailCompeting One-Way Essential Complements : the Forgotten Side of the Net Neutrality Story}
Broos, Sébastien ULg; Gautier, Axel ULg

Conference (2014, June 12)

We examine the incentives of an internet service provider (ISP) to break net neutrality by excluding internet applications competing with its own products, a typical example being the exclusion of VoIP ... [more ▼]

We examine the incentives of an internet service provider (ISP) to break net neutrality by excluding internet applications competing with its own products, a typical example being the exclusion of VoIP applications by a telecom company offering internet and voice services. We show that exclusion is not a concern when the ISP is a monopoly because it can extract the additional surplus created by the application through price rebalancing. By contrast, when ISP’s compete, in an attempt to differentiate, only one ISP will offer the app. Applying a no-exclusion rule in this case can lead to monopoly. [less ▲]

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See detailTrouble de la reconnaissance de soi chez des personnes atteintes de la maladie d'Alzheimer
Moyse, Evelyne ULg; Bastin, Christine ULg; Salmon, Eric ULg et al

Poster (2014, June 12)

Introduction : Outre des difficultés de mémoire épisodique, la maladie d’Alzheimer est associée à une altération progressive du fonctionnement de la mémoire sémantique où les connaissances du passé ... [more ▼]

Introduction : Outre des difficultés de mémoire épisodique, la maladie d’Alzheimer est associée à une altération progressive du fonctionnement de la mémoire sémantique où les connaissances du passé lointain sont mieux préservées que les connaissances acquises récemment. De plus, il a été rapporté que ce type de perte peut aussi se produire pour la reconnaissance de son propre visage. Une étude décrivait le cas d’une femme atteinte de la maladie d’Alzheimer à un stade avancé qui était incapable de se reconnaître sur des photographies prises dans un passé récent mais qui avait peu voire pas de difficultés à se reconnaître sur des photographies prises pendant les deux premières décennies de sa vie adulte. Cependant, la description d’une seule étude de cas pourrait être vue comme anecdotique. Objectifs : L’objectif de cette étude est d’évaluer si ce type de difficultés peut s’observer dans un plus large échantillon de patients. Pour ce faire, des patients à des stades légers à modérés de la maladie sont comparés à des sujets âgés sains sur une tâche de reconnaissance de visages (soi, familier, inconnu) appartenant à différentes périodes de vie (20 ans jusqu’à récemment). Résultats : Au stade léger, les patients présentaient des difficultés uniquement pour reconnaître le visage d’une personne familière alors qu’au stade modéré de la maladie, ces difficultés s’observaient à la fois pour le visage familier et le propre visage. De plus, comparés aux sujets âgés sains, les patients modérés avaient des difficultés pour se reconnaître sur des photos récentes, alors qu’aucune différence n’était observée pour les autres périodes de vie. Par contre, aucune différence entre les patients légers et leurs sujets contrôles n’était observée selon l’âge des visages. Par ailleurs, l’analyse des temps de réaction montraient que ces deux groupes de participants étaient plus lents pour reconnaître les photos anciennes par rapport aux photos récentes. Conclusion : La présente étude révèle que les difficultés de reconnaissance des visages évoluent avec l’avancement de la maladie, avec des difficultés qui touchent uniquement la reconnaissance de visages familiers au stade léger de la maladie mais qui s’étendent au propre visage au stade modéré. De plus, une perte graduée dans le temps de la reconnaissance de soi est observée chez les patients modérés (moindre reconnaissance de son visage récent) mais pas chez les patients légers. Au contraire, un ralentissement de la reconnaissance des photos anciennes par rapport aux photos récentes était constaté chez les patients légers ainsi que chez leurs sujets contrôles. Deux hypothèses sont avancées pour expliquer ce phénomène. Premièrement, les photos anciennes provoqueraient une réaction de surprise et par là, augmenteraient le temps de réponse. La seconde hypothèse postule plutôt une difficulté d’accès aux représentations antérieures de soi et de son proche. [less ▲]

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See detailInternet : support, médium ou épimédium ?
Barnabé, Fanny ULg; Dozo, Björn-Olav ULg

Conference (2014, June 11)

Detailed reference viewed: 13 (4 ULg)
Peer Reviewed
See detailTumor Angiogenesis and Lymphangiogenesis: Microenvironmental Soil for Tumor Progression and Metastatic Dissemination
Paupert, Jenny ULg; Van De Velde, Maureen ULg; Kridelka, Frédéric ULg et al

in Feige, Jean-Jacques; Pagès, Gilles; Soncin, Fabrice (Eds.) Molecular Mechanisms of Angiogenesis (2014)

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See detailExperimental tests and numerical modelling on eight slender steel columns under increasing temperatures
Franssen, Jean-Marc ULg; Zhao, Bin; Gernay, Thomas ULg

in Li, G.Q.; Jiang, S.C.; Chen, Suwen (Eds.) et al Progress on Safety of Structures in Fire (2014, June 11)

In order to fill the lack of knowledge about slender elements behavior at elevated temperatures,, a European research project called FIDESC4 has been funded by the RFCS. This project involves experimental ... [more ▼]

In order to fill the lack of knowledge about slender elements behavior at elevated temperatures,, a European research project called FIDESC4 has been funded by the RFCS. This project involves experimental testing, parametric numerical analyses and development of simple design rules. The present paper reports the characteristics and the results of the FIDESC4 experimental test campaign performed at the University of Liege on slender steel columns at elevated temperatures. A total of eight columns have been tested, all of them with I shape section. Six columns were made of welded sections (some prismatic and some tapered members) and two columns were with hot rolled sections. The nominal length of the columns was 3 meters with the whole length being heated. The strength of the material (webs and flanges) was measured on sample before the tests. The order of magnitude of the initial geometrical imperfections was recorded. The columns were not restrained against longitudinal thermal elongation. The supports at the ends were cylindrical thus inducing a restrain against rotation in one plane while allowing rotation in the other plane. The allowed direction of rotation was chosen in each test to induce buckling around the strong or the weak axis. The load was applied at ambient temperature and maintained for a period of 15 minutes after which the temperature was increased under constant load. The load was applied concentrically on some tests and with an eccentricity in other tests. The load eccentricity was either applied at both ends, leading to constant bending moment distribution along the length, or at one end only, leading to a triangular bending moment distribution. Heating was applied by electrical resistances enclosed in ceramic pads. The columns and the ceramic pads were wrapped in ceramic wool insulating material. This technique was preferred to gas heating in a standard test furnace because it allows applying a slower and better controlled heating rate and thus obtaining a more uniform temperature distribution in the member. It is also easier to measured lateral displacements of the column. Preliminary blank tests were performed on unloaded specimen in order to determine the heating range to be used later on the loaded columns. The paper will also report on a modification of the heating technique that was applied and improved significantly the uniformity in the temperature distribution. Numerical simulations were performed before the tests using shell elements of the software SAFIR and assumed values of the material properties in order to predict the failure modes. It was essentially crucial to determine whether lateral supports at intermediate levels should be provided in order to ensure failure in the desired direction. Experience showed that the failure modes developed as predicted by the numerical simulations. Besides a thorough description of the experiments, the paper will also present the obtained results in terms of failure mode, ultimate temperature and evolution of longitudinal and transverse displacement. Some information will also be given about the level of detail that has to be used in the numerical model in order to get accurate results at a reasonable price. [less ▲]

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See detailFinancement de la santé et recouvrement des coûts en République Démocratique du Congo: le lourd fardeau des ménages.
Manzambi Kuwekita, Joseph ULg

Scientific conference (2014, June 11)

This study examines the share and allocation of household expenditure in health financing, as presented by the National Health Account figures. These figures are based on a national survey carried out in ... [more ▼]

This study examines the share and allocation of household expenditure in health financing, as presented by the National Health Account figures. These figures are based on a national survey carried out in 2010 among 11,000 households, 2,200 people living with HIV/AIDS, 183 institutions, 42 mutual funds, 18 companies and using the balance sheets of 1,300 companies. Total household health expenditure per capita per year amounted to U.S. $ 4.50. Routine health expenditure is covered by the households (40%) and international cooperation (45%) through direct payment without cost sharing (93.7%). A hospital stay is warranted in case of nutritional deficiencies (34%), malaria (12%) and mental disorders (10%). 82% of outpatient care is related to malaria (71%) and mental disorders (12.5 %). In conclusion, the observation that 71.58% of hospitals expenditure, 96.49% of ambulatory care centres expenditure, 98.48% of medical and diagnosis laboratories expenditure, 72.42% of pharmacies expenditures come from households’ out of pocket expenses calls for the establishment of solidarity mechanisms in the health sector. Outpatient malaria care consumes as much as 71% of household expenditure, and we therefore need to strengthen prevention, treatment and focus on monitoring progress. The fact that nutritional deficiencies are the leading cause of people seeking hospital care suggests that efforts are needed to improve their living conditions of households. Mental disorders are the third leading cause of hospital recourse and this pathology should therefore be included in the minimum and supplementary package of activities. [less ▲]

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See detailLa plainte du patient et sa gestion par voie de médiation.
DOPPAGNE, Caroline ULg; Martin, Didier ULg

Scientific conference (2014, June 11)

Detailed reference viewed: 23 (0 ULg)
See detailMon cerveau, un ordinateur ?!
Dethier, Julie ULg; Noirhomme, Quentin; Van Calster, Laurens

Conference given outside the academic context (2014)

Dôter les ordinateur d'un cerveau ou faire assister nos cerveaux par des ordinateurs ? Trois chercheurs abordaient ces thématiques lors d'un Doc'Café mi-homme, mi-machine.

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See detailLes jeunes et la politique
Grandjean, Geoffrey ULg

Conference given outside the academic context (2014)

Detailed reference viewed: 16 (1 ULg)
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See detailSoil infrastructure evolution and its effect on water transfer processes under contrasted tillage systems - overview of methodologies with preliminary results
Parvin, Nargish ULg; Colinet, Gilles ULg; Garré, Sarah ULg et al

Conference (2014, June 10)

The heterogeneity of soil structure and porosity are highly influenced by external factors like tillage systems and other land management approaches. The aim of this project is to investigate the effect ... [more ▼]

The heterogeneity of soil structure and porosity are highly influenced by external factors like tillage systems and other land management approaches. The aim of this project is to investigate the effect of soil tillage along with residue management on the changing pattern of soil structure. This investigation will help to emphasize the different water flow dynamics especially the preferential flow processes through the soil that are influenced by the changes in structural distribution in the soil profile. The experimentation has been started from June 2013 in the research field in Gembloux. Soil profile description together with soil sampling has been carried out in the four objects of land management. Soil samples will be used for the measurement of water retention capacity (done), hydraulic conductivity and x-ray microtomography. The assessment of soil water retention curves with pressure plate technique show significantly (p<0.05) higher water retention (Hwr) in WP than ST at 9.8 to 98 hPa, Hwr in WP than NI at 39 to 14710 hPa, Hwr in ST than NI at 294 to 14710 hPa and Hwr in WP than NO at 69 to 98 hPa. There was no significant difference in the water retention between NO and NI and ST and NO. Since, tillage practices generally increase soil porosity, the correlation between soil hydraulics and porosity distribution would expect to be different for different tillage systems. In our study, WP retains more water due to the increase of macroporosity than ST, NI and NO. As the changes in soil structure are usually noticed in the range of 9.8 to 98 hPa, so, we can conclude that there is certainly structural change between WP and conservation practices of ST, NI and NO. In our study, there will be also soil moisture sensors (Decagon 10HS, 5TM and ML3 Thetaprobe) to capture the total soil moisture networks in the field under four different trials. The soils from the different trials and also from different depths (0-15, 25-30 and 50-60 cm) were used for zone specific calibration of the sensors. All the experiments will be repeated twice a year. For the specific spatio-temporal comparison, the monitoring results from electrical resistance tomography will be available from the collaborated project of the same faculty. [less ▲]

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See detailLes remèdes d'origine égyptienne utilisés dans la médecine vétérinaire antique
Marganne, Marie-Hélène ULg

Conference (2014, June 10)

Famous since the Odyssey (IV, 229-230) for its drugs, Egypt furnishes the Greek world with some medical substances already mentioned in the hippocratic treatises. Moreover, many Greek drug names have been ... [more ▼]

Famous since the Odyssey (IV, 229-230) for its drugs, Egypt furnishes the Greek world with some medical substances already mentioned in the hippocratic treatises. Moreover, many Greek drug names have been loaned from the Egyptian language, such as ἄμ(μ)ι for cumin, κίκι for castor-oil, κόμμι for gum, κῦφι for a complex preparation used for fumigation in cult practices, νίτρον for sodium carbonate, στίμμι for galena, σῶρυ for ferrous sulfate, and σάμψ(ο)υχον, for marjoram, whose name means “herb (sem) of Soukhos", another name for the crocodile god Sobek. The trade of drugs, spices and colourants, used in pharmacology, cosmetology, painting, cultual and magical practices, embalming rites and nutrition always flourished in Egypt and has intensified in Hellenistic and Roman times. As a continuation of the research on remedies of Egyptian origin in Greco-Roman pharmacopoeia, this article provides a list of Egyptian ingredients used in Greek and Latin veterinary prescriptions. The use of these substances is compared with recomandations from human medicine. Their availability and costs are also studied. [less ▲]

Detailed reference viewed: 8 (0 ULg)