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See detailDionysos Ômèstès (Plutarque, Thémistocle, 13 ; Antoine, 24)
Lebreton, Sylvain ULg

in Bodiou, Lydie; Mehl, Véronique; Oulhen, Jacques (Eds.) et al Chemin Faisant : Mythes, cultes et société en Grèce ancienne : Mélanges en l'honneur de Pierre Brulé (2009)

À travers l’étude de deux extraits des Vies de Plutarque (Thémistocle, 13 et Antoine, 24), faisant tous deux apparaître un Dionysos Ômèstès, cette contribution tente de donner une appréciation de la ... [more ▼]

À travers l’étude de deux extraits des Vies de Plutarque (Thémistocle, 13 et Antoine, 24), faisant tous deux apparaître un Dionysos Ômèstès, cette contribution tente de donner une appréciation de la fiabilité de cet auteur comme source pour l’étude des épiclèses du polythéisme hellénique. La mise en perspective de ces deux passages au sein de l’œuvre plutarchéenne, mais aussi leur confrontation avec d’autres sources, permettent en effet de déterminer que, dans les deux cas, Plutarque a extrait cette épiclèse de son contexte cultuel originel pour la réintégrer dans un contexte historique tout autre. La mise au jour de ce procédé, soutenue par d’autres exemples, permet in fine d’esquisser des hypothèses et d’autres pistes de recherche sur l’utilisation des épiclèses divines par cet auteur. [less ▲]

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See detailL'administration dans un contexte de modernité radicale: quand les instruments de gestion doivent devenir source de réflexivité
Joris, Geoffrey ULg; Fallon, Catherine ULg

in Pyramides (2009), 18

Dans de plus en plus de domaines, la gestion de la chose publique s'opérationnalise dans un contexte de modernité radicale dont les caractéristiques (surinformation, indétermination, hyper-complexité ... [more ▼]

Dans de plus en plus de domaines, la gestion de la chose publique s'opérationnalise dans un contexte de modernité radicale dont les caractéristiques (surinformation, indétermination, hyper-complexité, incertitude croissante et multiple, pluralisme, mobilité accrue des acteurs) imposent aux pouvoirs publics de repenser les conditions de l'exercice de l'autorité, tant du point de vue des dispositifs institutionnels que des référentiels et cadres mobilisés, pour en renforcer la réflexivité. Nous proposons de dresser une liste de facteurs facilitant une démarche réflexive, à partir de deux études de cas dans le domaine de l'environnement, l'une consacrée au rôle et au fonctionnement de la « SPAQuE », une agence publique fondée afin de gérer la politique de décontamination des sols en Belgique (Région wallonne) et l'autre aux transformations des modalités de décision publique pour certains projets d'aménagement (Permis par décret - PIR). Loin d'être des recettes, ces facteurs poussent l'acteur à se questionner sur la pertinence et les conditions pratiques et spécifiques à son organisation. [less ▲]

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See detailLa vignette therapeutique de l'etudiant. Quand l'asthme se revele.
Louis, Renaud ULg; Schleich, FLorence ULg

in Revue Médicale de Liège (2009), 64(9), 474-8

Asthma is a frequent chronic inflammatory disease which is often mistaken for simple bronchitis. The diagnosis is based on the association of symptoms and excessive airway calibre variability. When ... [more ▼]

Asthma is a frequent chronic inflammatory disease which is often mistaken for simple bronchitis. The diagnosis is based on the association of symptoms and excessive airway calibre variability. When symptoms are present more than once a week, it is recommended to give low dose inhaled corticoids as a maintenance treatment together with, as needed, rapid acting beta2 agonist. In addition it is crucial to provide the patient with an education on the disease to reinforce adherence to the treatment. [less ▲]

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See detailInfection par Mycobacterium malmoense chez un sujet immunocompetent.
Guiot, Julien ULg; Ramaut, M.; Massart, B. et al

in Revue Médicale de Liège (2009), 64(7-8), 390-3

We report the case of a 57-year-old patient in whom we found a pulmonary infection due to Mycobacterium malmoense. This patient had no immunodeficiency and responded quite rapidly to anti-tuberculous ... [more ▼]

We report the case of a 57-year-old patient in whom we found a pulmonary infection due to Mycobacterium malmoense. This patient had no immunodeficiency and responded quite rapidly to anti-tuberculous therapy. He was treated for 6 months by levofloxacine, myambutol, and nicotibine, followed by 3 months of clarithromycine, levofloxacine and myambutol. The patient improved clinically to become asymptomatic and the cavitary lesion shown at the CT-scan slightly decreased. The patient is still currently treated by clarithromycine and ciproxine. [less ▲]

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See detailEstimating the costs of collective treatment of wastewater : the case of Walloon Region (Belgium)
Dogot, Thomas ULg; Xanthoulis, Y.; Fonder, N. et al

Conference (2009)

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See detailShifting Towards Environment-Friendly Modes: Profiling Travelers using Q-Methodology
Cools, Mario ULg; Moons, Elke; Janssens, Brecht et al

in Proceedings of the 88th Annual Meeting of the Transportation Research Board (DVD-ROM) (2009)

Due to a variety of reasons, the previous century is characterized by an extraordinary growth in car use that has continued into the current century. This has resulted in serious environmental ... [more ▼]

Due to a variety of reasons, the previous century is characterized by an extraordinary growth in car use that has continued into the current century. This has resulted in serious environmental repercussions. Despite technological advancements, the externalities remain an ecological threat that can not be discarded by policy makers. Therefore, it is essential that policy makers focus on reducing car use and on stimulating the shift towards more environment-friendly transport modes. In this study, Q-methodology is adopted as the technique to segment people, and to ascertain which approaches and determinants matter to medium distance travel. Segmentation is important, as policy measures will be more efficient and effective if they are fine-tuned on specific target groups. The analysis revealed that four discourses preponderate the paradigm of environmentally sustainable transport: travelers who use public transport as a dominant alternative, car-dependent travelers, travelers with a positive perception of using public transport, and travelers with a preference for car use. Concerning rational, economic motives, individuals evaluate travel time reliability as most important. To increase the reliability policy makers should consider the use of separate bus lanes and traffic light manipulation. In addition, public transport can be made even more attractive, when costs of cars are made more variable by road or congestion charging. When the subjective motives are discussed, the differences between the different groups of travelers were more pronounced. Next to increasing the benefits of using public transport, policy makers should also pay attention to removing psycho-social barriers. [less ▲]

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See detailEtude sur la filière porteuse d'emploi "Palmier à huile" : rapport final
Lebailly, Philippe ULg; Tentchou, Jean

Report (2009)

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See detailInvestigating the Variability in Daily Traffic Counts Trough the Use of ARIMAX and SARIMAX Models: Assessing the Effect of Holidays on two diverse site locations
Cools, Mario ULg; Moons, Elke; Wets, Geert

in Proceedings of the 88th Annual Meeting of the Transportation Research Board (DVD-ROM) (2009)

In this paper, daily traffic counts are explained and forecasted by different modeling philosophies, namely the ARIMAX and SARIMA(X) modeling approaches. Special emphasis is put on the investigation of ... [more ▼]

In this paper, daily traffic counts are explained and forecasted by different modeling philosophies, namely the ARIMAX and SARIMA(X) modeling approaches. Special emphasis is put on the investigation of the seasonality in the daily traffic data and on the identification and comparison of holiday effects at different site locations. To get prior insight in the cyclic patterns present in the daily traffic counts, spectral analysis provides the required framework to highlight periodicities in the data. Data originating from single inductive loop detectors, collected in 2003, 2004 and 2005, are used for the analyses. Four traffic count locations are investigated in this study, an upstream and downstream traffic count location on a highway that is excessively used by commuters and an upstream and downstream traffic count location on a highway that is typified by leisure traffic. The different modeling techniques pointed out that weekly cycles appear to determine the variation in daily traffic counts. The comparison between seasonal effects and holiday effects at different site locations revealed that both the ARIMAX and SARIMAX modeling approach are valid frameworks for the identification and quantification of possible influencing effects. The technique yielded the insight that holiday effects play a noticeable role on highways that are excessively used by commuters, while holiday effects have a more ambiguous effect on highways typified for their leisure traffic. Modeling of daily traffic counts on secondary roads, and simultaneous modeling of both the underlying reasons of travel and revealed traffic patterns, certainly are challenges for further research. [less ▲]

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See detailInfluence of obstacles on the development of gravity current prior to backdraft
Pérez-Jiménez, Christian; Guigay, Georges Jan; Horvat, Andrej et al

in Fire Technology (2009)

The phenomenon of backdraft is closely linked to the formation of a flammable region due to the mixing process between the unburned gases accumulated in the compartment and the fresh air entering the ... [more ▼]

The phenomenon of backdraft is closely linked to the formation of a flammable region due to the mixing process between the unburned gases accumulated in the compartment and the fresh air entering the compartment through a recently created opening. The flow of incoming fresh air is called the gravity current. Gravity current prior to backdraft has already been studied, Fleischmann (1993, Backdraft phenomena, NIST-GCR-94-646. University of California, Berkeley) and Fleischmann (1999, Numerical and experimental gravity currents related to backdrafts, Fire Safety Journal); Weng et al. (2002, Exp Fluids 33:398–404), but all simulations and experiments found in the current literature are systematically based on a perfectly regular volume, usually parallelipedic in shape, without any piece of furniture or equipment in the compartment. Yet, various obstacles are normally found in real compartments and the question is whether they affect the gravity current velocity and the level of mixing between fresh and vitiated gases. In the work reported here, gravity current prior to backdraft in compartment with obstacles is investigated by means of three-dimensional CFD numerical simulations. These simulations use as a reference case the backdraft experiment test carried out by Gojkovic (2000, Initial Backdraft. Department of Fire Safety Engineering, Lunds Tekniska Ho¨ gskola Universitet, Report 3121). The Froude number, the transit time and the ignition time are obtained from the computations and compared to the tests in order to validate the model. [less ▲]

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See detailInvestigating the Variability in Daily Traffic Counts Trough Use of ARIMAX and SARIMAX Models: Assessing the Effect of Holidays on Two Site Locations
Cools, Mario ULg; Moons, Elke; Wets, Geert

in Transportation Research Record: Journal of the Transportation Research Board (2009), 2136

In this paper, daily traffic counts are explained and forecast by different modeling philosophies: an approach using autoregressive integrated moving average (ARIMA) models with explanatory variables (i.e ... [more ▼]

In this paper, daily traffic counts are explained and forecast by different modeling philosophies: an approach using autoregressive integrated moving average (ARIMA) models with explanatory variables (i.e., the ARIMAX model) and approaches using a seasonal autoregressive integrated moving average (SARIMA) model as well as a SARIMA model with explanatory variables (i.e., the SARIMAX model). Special emphasis is placed on the investigation of seasonality in daily traffic data and on the identification and comparison of holiday effects at different sites. To get insight into prior cyclic patterns in the daily traffic counts, spectral analysis provides the required framework to highlight periodicities in the data. The analyses use data from single inductive loop detectors, which were collected in 2003, 2004, and 2005. Four traffic count locations are investigated in this study: an upstream and a downstream traffic count site on a highway used extensively by commuters, and an upstream and a downstream traffic count site on a highway typically used for leisure travel. The different modeling techniques show that weekly cycles appear to determine the variation in daily traffic counts. The comparison between seasonal and holiday effects at different site locations reveals that both the ARIMAX and the SARIMAX modeling approaches are valid frameworks for identifying and quantifying possible influencing effects. The techniques yield the insight that holidays have a noticeable impact on highways extensively used by commuters, while having a more ambiguous impact on highways typically used for leisure travel. Future research challenges are the modeling of daily traffic counts on secondary roads and the simultaneous modeling of underlying reasons for travel and revealed traffic patterns. [less ▲]

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See detailLe malentendu comme structure de la communication
Servais, Christine ULg; Servais, Véronique ULg

in Questions de Communication (2009), 15

Dans les modèles télégraphiques,on considère que la communication fonctionne si les messages de départ et d’arrivée sont identiques.Sinon, cela signifie que le récepteur a mal compris ou que l’émetteur ... [more ▼]

Dans les modèles télégraphiques,on considère que la communication fonctionne si les messages de départ et d’arrivée sont identiques.Sinon, cela signifie que le récepteur a mal compris ou que l’émetteur s’est mal fait comprendre. Dans ce cadre, la pathologie de la communication est l’incompréhension. Ce que nous proposons ici, à partir de l’analyse de situations de communication très particulières (des rencontres enchantées avec des dauphins sauvages), c’est que, à l’inverse, la structure fondamentale de la communication est le malentendu. Or, c’est le refus de reconnaître ce fait (dû notamment au désir vain et désastreux de contrôler le partenaire) qui engendre des pathologies.Admettre au contraire qu’émetteur et récepteur disposent nécessairement de versions différentes de l’interaction et qu’il n’y a pas de version plus objective qu’une autre, c’est replacer l’altérité au coeur d’une communication qui est réussie parce qu’on accepte de mal se comprendre. [less ▲]

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See detailLes éléphants du Gourma. Mali. Statuts et menaces pour leur conservation
Bouché, Philippe ULg

in Pachyderm (2009), 45

Un comptage aérien d’éléphants a été mené au Mali dans le Gourma afin d’actualiser le statut des éléphants qui y vivent et les menaces qui pèsent sur leur survie à long terme. Un effectif minimal de 344 ... [more ▼]

Un comptage aérien d’éléphants a été mené au Mali dans le Gourma afin d’actualiser le statut des éléphants qui y vivent et les menaces qui pèsent sur leur survie à long terme. Un effectif minimal de 344 individus a été enregistré, celui-ci semblant stable depuis 2002, au regard des résultats d’inventaires précédents. Les survols ont permis de constater que de fortes pressions anthropiques s’exercent sur les fragiles ressources naturelles du Gourma avec pour conséquence une compétition accrue entre les hommes et les éléphants vis à vis des ressources (habitats et eau), constituant ainsi une source d’exacerbation des conflits. [less ▲]

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See detailRoad Pricing as an Impetus for Environment-Friendly Travel Behavior: Results from Stated Adaptation Experiment
Janssens, Davy; Cools, Mario ULg; Moons, Elke et al

in Proceedings of the 88th Annual Meeting of the Transportation Research Board (DVD-ROM) (2009)

An important policy instrument for governments to modify travel behavior and manage the increasing travel demand is the introduction of a congestion pricing system. In this study, the influence of a ... [more ▼]

An important policy instrument for governments to modify travel behavior and manage the increasing travel demand is the introduction of a congestion pricing system. In this study, the influence of a detailed classification of activities is examined to assess likely traveler response to congestion pricing scenarios. Despite the fact that most studies do not differentiate between activity categories, the value of time and in general the space-time properties and constraints of different types of activities vary widely. For this reason, it is of importance to provide sufficient detail and sensitivity in assessing the impact of congestion pricing scenarios. In addition, a first assessment of possible multi-faceted adaptation patterns of travelers is presented. For these purposes, a stated adaptation study was conducted in Flanders (Dutch speaking region of Belgium). The experiment was conducted through an interactive stated adaptation survey. In the stated adaptation experiment respondents could indicate their stated responses to the congestion pricing scenario. The most prevalent conclusion is that the activity type significantly predetermines the willingness to express a more environmental-friendly behavior (i.e. reducing the number of trips, reducing the total distance traveled, switching to more environmental-friendly modes). Also, the willingness to show ecological activity-travel behavior (e.g. carpooling and using public transport) in a non-pricing situation is a major differentiator of future behavior in a congestion pricing scenario. [less ▲]

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See detailLa géographie, ça sert, d'abord, à faire le Monde
Breuer, Christophe ULg

in Bulletin de la Société Géographique de Liège (2009), 52

The geography is directly confronted with the societies’ problems, which it tries to answer by using its particular point of view. Specificities of the discipline generate innovation and at same time pose ... [more ▼]

The geography is directly confronted with the societies’ problems, which it tries to answer by using its particular point of view. Specificities of the discipline generate innovation and at same time pose a permanent epistemological questioning, which makes the orientation of the young geographers particularly complex. [less ▲]

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See detailHotelling’s T2 control chart with two adaptive sample sizes
Faraz, Alireza ULg; Moghadam, M. B.

in Quality & Quantity (2009), 43(6), 903-913

Some quality control schemes have been developed when several related quality characteristics are to be monitored. The familiar multivariate process monitoring and control procedure is the Hotelling’s T 2 ... [more ▼]

Some quality control schemes have been developed when several related quality characteristics are to be monitored. The familiar multivariate process monitoring and control procedure is the Hotelling’s T 2 control chart for monitoring the mean vector of the process. It is a direct analog of the univariate shewhart ¯ x chart. As in the case of univariate, the ARL improvements are very important particularly for small process shifts. In this paper, we study the T 2 control chart with two-state adaptive sample size, when the shift in the process mean does not occur at the beginning but at some random time in the future. Further, the occurrence time of the shift is assumed to be exponentially distributed random variable. [less ▲]

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See detailIntegracion Numerica del Problema Viscoplastico
Andia Fages, Susana; Raichman, Silvia; Mirasso, Anibal et al

(2009)

En este trabajo se discute la integración numérica para el modelo viscoplástico de Perzyna, que conduce a una ecuación de consistencia viscoplástica no lineal, de acuerdo a un trabajo previo de Ponthot ... [more ▼]

En este trabajo se discute la integración numérica para el modelo viscoplástico de Perzyna, que conduce a una ecuación de consistencia viscoplástica no lineal, de acuerdo a un trabajo previo de Ponthot. Esta ecuación no lineal se resuelve mediante elMétodo de Newton Raphson y el algoritmo resultante se implementa en MATLAB. Los resultados obtenidos con el programa desarrollado ajustan muy bien con soluciones cerradas disponibles en la literatura para algunos casos particulares. En este trabajo además se propone una solución cerrada para el caso de sensitividad viscosa lineal (m=1) y exponente de endurecimiento viscoplástico lineal (n=1). Se estudia además la respuesta del algoritmo frente a la variación de diferentes parámetros como el coeficiente de viscosidad. El código obtenido en una etapa posterior del estudio se podrá utilizar para resolver otros problemas de interés y, además, permitirá su implmentación en un código de elementos finitos con capacidades no lineales. [less ▲]

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See detailFederal public administration reform in Belgium: new public management under deconstruction
Joris, Geoffrey ULg; de Visscher, Christian; Montuelle, Caroline

in actes du colloques de l'AFSP (2009)

Since the 1980s we assist at a co-evolutionary redefinition of social structures that its permanence contributes to legitimate it. In this perspective, the particularities of each modernities are put in ... [more ▼]

Since the 1980s we assist at a co-evolutionary redefinition of social structures that its permanence contributes to legitimate it. In this perspective, the particularities of each modernities are put in an explicit perspective and raise question because they have lost their own evidence.4 While industrial modernity is characterized by a discourse on stability, radical modernity is characterized by an information overload, an hyper-complexity, the emergence of a multidimensional uncertainty reinforced by the mergence of a multidimensional value configuration and social mobility.5 In the field of public administration, all these elements converge towards the need to construct some form of post-bureaucratic or reflexive public civil service structured through flexible and open management instruments [less ▲]

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See detailImpact of growth hormone (GH) deficiency and GH replacement upon thymus function in adult patients.
Morrhaye, Gabriel ULg; Kermani, Hamid; Legros, Jean-Jacques ULg et al

in PLoS ONE (2009), 4(5), 5668

BACKGROUND: Despite age-related adipose involution, T cell generation in the thymus (thymopoiesis) is maintained beyond puberty in adults. In rodents, growth hormone (GH), insulin-like growth factor-1 ... [more ▼]

BACKGROUND: Despite age-related adipose involution, T cell generation in the thymus (thymopoiesis) is maintained beyond puberty in adults. In rodents, growth hormone (GH), insulin-like growth factor-1 (IGF-1), and GH secretagogues reverse age-related changes in thymus cytoarchitecture and increase thymopoiesis. GH administration also enhances thymic mass and function in HIV-infected patients. Until now, thymic function has not been investigated in adult GH deficiency (AGHD). The objective of this clinical study was to evaluate thymic function in AGHD, as well as the repercussion upon thymopoiesis of GH treatment for restoration of GH/IGF-1 physiological levels. METHODOLOGY/PRINCIPAL FINDINGS: Twenty-two patients with documented AGHD were enrolled in this study. The following parameters were measured: plasma IGF-1 concentrations, signal-joint T-cell receptor excision circle (sjTREC) frequency, and sj/beta TREC ratio. Analyses were performed at three time points: firstly on GH treatment at maintenance dose, secondly one month after GH withdrawal, and thirdly one month after GH resumption. After 1-month interruption of GH treatment, both plasma IGF-1 concentrations and sjTREC frequency were decreased (p<0.001). Decreases in IGF-1 and sjTREC levels were correlated (r = 0.61, p<0.01). There was also a decrease in intrathymic T cell proliferation as indicated by the reduced sj/beta TREC ratio (p<0.01). One month after reintroduction of GH treatment, IGF-1 concentration and sjTREC frequency regained a level equivalent to the one before GH withdrawal. The sj/beta TREC ratio also increased with GH resumption, but did not return to the level measured before GH withdrawal. CONCLUSIONS: In patients with AGHD under GH treatment, GH withdrawal decreases thymic T cell output, as well as intrathymic T cell proliferation. These parameters of thymus function are completely or partially restored one month after GH resumption. These data indicate that the functional integrity of the somatotrope GH/IGF-1 axis is important for the maintenance of a normal thymus function in human adults. TRIAL REGISTRATION: ClinicalTrials.gov NTC00601419. [less ▲]

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See detailNovel large ring 1,3 bridged 2-azetidinones as potential inhibitors of penicillin-binding proteins
Urbach, Allan; Dive, Georges ULg; Marchand-Brynaert, Jacqueline

in European Journal of Organic Chemistry (2009), 11

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