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See detailDonner la littérature dialectale à lire: l'exemple d'un poème en liégeois
Baiwir, Esther ULg; Biquet, Stéphanie ULg

Conference given outside the academic context (2014)

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See detailLe Parti Socialiste en 2014: un programme électoral en rupture avec les précédents ?
Piet, Grégory ULg; Dandoy, Régis

E-print/Working paper (2014)

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

Poster (2014, April 08)

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

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

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See detailElectromagnetic hypersensitivity and occupational exposure to electromagnetic fields (EMF)
Demaret, Isabelle ULg

Conference (2014, April 07)

Introduction Scientific publications on electromagnetic hypersensitivity began in the early 80' and were first related to video display terminals in the professional environment. Electromagnetic ... [more ▼]

Introduction Scientific publications on electromagnetic hypersensitivity began in the early 80' and were first related to video display terminals in the professional environment. Electromagnetic hypersensitivity is now more heterogeneous and complaints about electromagnetic fields (EMF) are often associated to mobile phone or wifi. Provocation studies did not find that persons claiming to have electromagnetic hypersensitivity were more able to detect EMF than others or that they displayed any special physiological changes when exposed to EMF. Since 1996, WHO defined this syndrome as Idiopathic Environmental Intolerance to ElectroMagnetic Fields (IEI-EMF), characterised by symptoms attributed to EMF. The diagnostic is made by the person itself. The symptoms are heterogeneous and are frequently encountered in the general population. Despite the lack of a proven causal relationship with EMF, these symptoms, and the anxiety related, can lead to important suffering. Some persons with IEI-EMF are even unable to work. IEI-EMF is classified among the functional somatic syndromes as other syndromes with no physiological basis (as multiple chemical sensitivity). Directive and IEI-EMF Studies showed that persons who feel more stressed in their professional environment and are less satisfied with their work are more prone to IEI-EMF. There are some elements in the directive that could frighten these persons: the directive does not consider long term effects; the limit values can be exceeded temporarily and a worker must be informed that he can have transient symptoms. Discussion Persons with IEI-EMF are afraid of adverse health effects and often think that these effects are not taken into account by official agency. For them, everything that can aggravate their fears will be difficult to handle. [less ▲]

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See detailLe "Gate fever" : la cristallisation du temps carcéral
Englebert, Jérôme ULg

Scientific conference (2014, April 05)

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See detailModélisation de l'attitude des médecins généralistes envers la prévention
Vanmeerbeek, Marc ULg

Conference (2014, April 05)

Objectifs En Belgique, la mise en œuvre des procédures préventives reste insuffisante et inéquitable dans plusieurs domaines. Les médecins généralistes (MG) sont-ils désireux de participer à ... [more ▼]

Objectifs En Belgique, la mise en œuvre des procédures préventives reste insuffisante et inéquitable dans plusieurs domaines. Les médecins généralistes (MG) sont-ils désireux de participer à l’amélioration de cette situation ? Méthode Un questionnaire postal a été envoyé à un échantillon aléatoire de 2.500 généralistes, répartis entre Flandre, Wallonie et Bruxelles. L’opinion des MG a été évaluée au moyen d’une échelle d’attitude. Cinq axes définis par une enquête qualitative préalable ont été explorés : vision globale de la santé, stratégies de prévention collectives, évaluation de pratique, collaboration interprofessionnelle et santé publique. Un consensus d’experts a défini les « meilleures » réponses aux échelles de Likert. Les résultats ont été soumis à une analyse factorielle exploratoire, puis à une analyse « Item Response Theory (IRT) » adaptée au traitement de réponses catégorielles (d’accord – pas d’accord). Résultats Les 457 réponses reçues ont été analysées pour modéliser l’attitude des MG ; trois dimensions ont été isolées : • Evaluation : positionne les MG selon leur souci à pratiquer une technique d’évaluation, à travailler par objectifs ou gérer leur base de données cliniques. • Responsabilité : attitude des MG qui se sentent responsables de la santé de leurs patients, ou qui organisent les conditions matérielles et relationnelles pouvant contribuer à son maintien. • Compétences professionnelles particulières : positionne les MG selon leur utilisation de plusieurs compétences « mineures » : acquisition et mise en pratique de l’information scientifique, délimitation des compétences entre praticiens et autorités de santé publique, délégation de tâches à des paramédicaux. Conclusion Une diffusion plus large et équitable des actes préventifs passe par la prise en compte de facteurs personnels et organisationnels propres aux MG. Leur distribution parmi les MG est probablement hétérogène, et leur degré d’acceptabilité variable. Une étude plus approfondie de la population des MG belges serait nécessaire. [less ▲]

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See detailLiquidity Constraints and Global Imbalances
Artige, Lionel ULg; Cavenaile, Laurent

Conference (2014, April 05)

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See detailL'ordinaire du contentieux administratif : Analyse du processus décisionnel au Conseil d'Etat belge francophone
Colemans, Julie ULg

Doctoral thesis (2014)

La thèse porte sur le processus décisionnel au Conseil d’Etat belge. Le raisonnement juridique pratique a été étudié à travers les activités concrètes que les auditeurs et conseillers accomplissent tout ... [more ▼]

La thèse porte sur le processus décisionnel au Conseil d’Etat belge. Le raisonnement juridique pratique a été étudié à travers les activités concrètes que les auditeurs et conseillers accomplissent tout au long du parcours du dossier. De cette manière, le raisonnement juridique n’est pas appréhendé comme une opération logique de la pensée mais comme un accomplissement pratique qui se déploient dans un horizon de sens partagé incarné par le concept de « raisonnable ». [less ▲]

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See detailRapports de forces et conflits : « la question balkanique »
Lika, Liridon ULg

Conference (2014, April 04)

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See detailImaging MS: strategies for the identification of analytes
Debois, Delphine ULg; Smargiasso, Nicolas ULg; Jourdan, Emmanuel et al

Scientific conference (2014, April 04)

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See detailDeconsecrating a doctrinal monument: Raymond M. Lemaire and the revisions of the Venice Charter
Houbart, Claudine ULg

Conference (2014, April 04)

Considering himself as the “main author” of the charter, Raymond M. Lemaire has been one of the first, together with Piero Gazzola, to plead for a revision of the document. As early as 1971, the two men ... [more ▼]

Considering himself as the “main author” of the charter, Raymond M. Lemaire has been one of the first, together with Piero Gazzola, to plead for a revision of the document. As early as 1971, the two men, respectively first Secretary General and President of ICOMOS, tended to launch a debate in favour of a better consideration of the social value of heritage, and the development of specific principles for historical cities conservation, to be included in the Venice charter. Lemaire’s recent experience in that field had indeed convinced him that, contrary to the assertion of article 14, “a literal application of principles valid for monuments, considered as such, is not always possible, nor desirable, for the ensembles”. The adoption of the Amsterdam declaration didn’t put an end to his efforts. Despite his unsuccessful attempt to get a revised version approved by the ICOMOS General assembly in Moscow (1978), R.M.Lemaire always remained critical towards the charter and the application of its principles in the field, underlining, in the eighties, its shortcomings in terms of cultural diversity and, in one of his last texts, in 1996, the negative effect of article 9, leading to the idea that “the mere essence of a conservation operation is a modernist intervention on the edifice or neighbourhood”. Beyond its interest for conservation history, the awareness of Lemaire’s early critical position towards the Venice Charter should inspire the current debates and help us overcome our reluctance to challenge the sacred principles of what we consider a doctrinal monument. [less ▲]

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See detailUse of on-line flow cytometry for the characterization of microbial stress dynamics during the bioprocess
Brognaux, Alison ULg; Han, Shanshan; Sorensen, Soren et al

Conference (2014, April 03)

Microbial cell population heterogeneity is now recognized as a major source of issues for the development and optimization of bioprocesses. Flow cytometry is a very powerful tool for the follow up of ... [more ▼]

Microbial cell population heterogeneity is now recognized as a major source of issues for the development and optimization of bioprocesses. Flow cytometry is a very powerful tool for the follow up of physiological properties of microbial cells in process-related conditions at the single cell level, and can be used to study the dynamics of segregation directly in bioreactors. In this context, specific interfaces have been developed in order to connect flow cytometer (FC) directly on bioreactor for automated analyses. In this work, we propose a simplified version of such interface and demonstrated its usefulness for multiplexed experiments. This automated FC system has been tested for the follow up of the dynamics of an E. coli pfis::gfpAAV fluorescent bio-reporter and its PI uptake, correlated with membrane permeability. This bioreporter is composed of a fis promoter, a growth dependent promoter-indicator of the nutrient status of cells, fused to a gene expressing an unstable variant of GFP. The results obtained showed that the dynamics of the GFP synthesis is complex and can be attributed to a complex set of biological parameters. Segregation in the membrane permeability has been noticed. This work demonstrates that a simplified version of on-line FC can be used at the process level for the investigation of the dynamics of complex physiological mechanisms. [less ▲]

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See detailNo simian Plasmodium detected in populations living in the equatorial rainy forest of the Democratic Republic of Congo
Mvumbi makaba, Dieudonné; Bobanga Lengu, Thierry; Kayembe Ntumba, Jean-Marie et al

Poster (2014, April 03)

Background Malaria remains the most deadly parasitic disease to date, especially in sub-Saharan Africa, which comprises the majority of cases collected per year. It has long been accepted that four ... [more ▼]

Background Malaria remains the most deadly parasitic disease to date, especially in sub-Saharan Africa, which comprises the majority of cases collected per year. It has long been accepted that four species of Plasmodium (P. falciparum, P. vivax, P. malariae and P. ovale) were responsible for the disease in humans. But quite recently, a fifth species, Plasmodium Knowlesi, has been identified as naturally infecting humans. Indeed, known for decades as naturally parasitizing the monkey Macaca fascicularis, P. knowlesi has long been confused, in terms of its evolutionary stage, with P. malariae or P. falciparum, which it resembles morphologically and it was not possible to properly differentiate them until the advent of molecular biology. To date, P. Knowlesi has only been identified in Southeast Asia and a similar phenomenon of natural transmission of simian plasmodium to humans has not been reported elsewhere. We therefore conducted this study to investigate the possible transmission of simian plasmodium to humans in populations living near the rainforest of the Democratic Republic of Congo (DRC) where several species of primates lives. Methods & Materials Three villages (Wenji-Secli, Bongonde, and Bolenge) in the Province of Ecuador (North-eastern DRC) were selected because of their geographical location. Blood samples spotted on filter paper were collected from 100 people randomly taken in each village. Two successive RT- PCR were performed. A first one using a single probe able to diagnose all plasmodium spp. and a second using four species-specific probes for the diagnosis of the four conventional human plasmodium species. Positivity in the first RT- PCR with negativity in the second RT- PCR would suggest the presence of plasmodium species other than the four conventional. Results P. falciparum was correctly identified in 44.6 % of samples. No other species of human plasmodium or not has been identified. Conclusion This preliminary study did not detect the presence of simian plasmodium in human populations living in the rainforest of the DRC. Studies with larger samples and with more advanced techniques should still be conducted. Keywords: Malaria, simian plasmodium, DR Congo [less ▲]

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See detailLa confiance comme processus relationnel. Une tentative de modélisation
Dethier, Baptiste ULg

Scientific conference (2014, April 03)

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See detailCaractérisation minéralogique, géochimique et géotechnique des matières premières utilisées en poterie dans le site d’Agafay, Marrakech, Maroc.
El Boudour El Idrissi, Hicham; Daoudi, Lahcen; El Ouahabi, Meriam ULg et al

Conference (2014, April 03)

Le site potier d’Agafay est localisé à 20 km au S-W de la ville de Marrakech, à l’ouest de l’oued N’Fis. L’activité potière y a débuté par transfert du savoir-faire à partir du village de Tamsloht vers ... [more ▼]

Le site potier d’Agafay est localisé à 20 km au S-W de la ville de Marrakech, à l’ouest de l’oued N’Fis. L’activité potière y a débuté par transfert du savoir-faire à partir du village de Tamsloht vers 1940 apr. J.-C. Le site comporte environ 90 ateliers où sont actifs 240 artisans. Les principales pièces produites sont les gasriyas (i.e., plats traditionnels de couscous et de modelage de pâtes de pains) et les briques des grandes murailles traditionnelles. Les matières premières utilisées, brutes ou en mélange, sont issues des terres agricoles locales (Ag1 et Ag5) pour les gasriyas et des dépôts actuels du oued N’Fis (Ag7) pour les briques. Les problématiques rencontrées dans ce site concernent les deux types de produits, gasriyas et briques. Dans le premier cas, des grains de la chaux gonflent dans les pièces après le contact prolongé des pièces produites avec l’air. Ce gonflement engendre des décollements dans les tessons et nuit à la qualité du produit final. Dans le deuxième cas, la distribution non homogène de la chaleur à l’intérieur des fours traditionnels utilisés engendre une très grande variation de couleur dans les briques, elles sont généralement tordues et certaines fondent totalement. Notre projet vise à une caractérisation scientifique des différentes phases de fabrication afin de remédier à ces problèmes. Les résultats montrent que la composition chimique est surtout silico-alumineuse (55 à 61 % de SiO2 ; 16 à 20% d’Al2O3), la teneur en Fe2O3 se situe entre 6 et 8 %, celle de CaO ne dépasse pas 6% pour les pâtes des gasriyas et atteint 10 % pour les pâtes des briques. La teneur en carbonates mesurée par le calcimètre de Bernard varie entre 5 et 14 %. La teneur en matière organique varie entre 5 et 7,5 %. L’indice de plasticité oscille entre 16 et 17,5. Pour des teneurs en eau proches de la limite de plasticité le degré de retrait au séchage des gasriyas est de l’ordre de 5 %, il est plus élevé pour les briques (8%) ce qui nécessite une plus grande maitrise du processus de séchage pour éviter que les pièces ne se tordent pas. La granulométrie des pâtes utilisées pour les gasriyas a montré une teneur moyenne de 50 % pour les argiles, 32 % pour les limons et 18 % pour les sables. Les briques comportent une proportion égale des trois classes granulométriques. La minéralogie de l’ensemble des pâtes est formée de quartz (< 27%), plagioclase (13%), calcite (7 à 9%), dolomite (5%) et argile (50%, 34% et 34% pour Ag1, Ag5 et Ag7, respectivement). Le feldspath potassique est présent uniquement dans l’échantillon Ag7. Concernant la fraction argileuse, elle est surtout constituée d’illite pour l’ensemble des pâtes, associée à des interstratifiés irréguliers 14c-14s (13 %) pour la pâte des briques, et une teneur de 11 % de smectite pour la pâte des gasriyas (Ag5). La mesure de la vitesse sonique a montré que les pièces formées par pression aboutissent à une porosité moindre que celle des pièces produites par boudinage. La densité des pièces produites reste semblable pour les cuissons à 950°C et 1050°C. Le plus bas degré de porosité ainsi que les plus grandes valeurs de résistance mécanique à la compression ont été enregistrés sur les pièces cuites à 1050 °C. Les contraintes maximales atteintes se situent entre 51 et 59 MPa pour les gasriyas et 24,5 MPa pour les briques. Quant à la résistance mécanique à la flexion, elle varie entre 17,4 et 20,3 N/mm² pour les gasriyas et 9,4 N/mm² pour les briques. L’analyse DRX des pièces cuites à 1050 °C a montré la disparition totale des carbonates et des argiles à cette température, accompagnée de l’apparition de la géhelénite, cristobalite, anorthoclase, diopside, spinelle et hématite. A l’issue de cette étude, nous recommandons un tamisage humide à 1 mm pour réduire l’effet des gros grains de la chaux, une cuisson par palier jusqu’à 1050°C est également nécessaire pour comprendre les transformations des phases minéralogiques et vitreuses. Finalement, l’utilisation des fours équipés d’une sonde pour garantir une meilleure distribution de la chaleur. [less ▲]

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