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See detailDike-break induced flows: a simplified model
Stilmant, Frédéric ULiege; Dewals, Benjamin ULiege; Archambeau, Pierre ULiege et al

Conference (2011, November)

A simplified model for the prediction of the steady-state outflow through a breach in an inland dike is presented. It consists in the application of the mass and momentum conservation principles to a ... [more ▼]

A simplified model for the prediction of the steady-state outflow through a breach in an inland dike is presented. It consists in the application of the mass and momentum conservation principles to a macroscopic control volume. A proper definition of the shape of the control volume enables to take into account the main characteristics of the flow and thus to compensate for the extreme simplification of the space discretisation of the model. At the breach, a relation derived from the shallow-water equations is used to determine the directions of the flow. Developments have been guided by numerical simulations and results have been compared to experimental data. Both the precision and the application domain of the simplified model are found satisfactory. [less ▲]

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See detailDilatometric and calorimetric study of the graphitisation of high chromium cast iron
Terziev, L.; Lecomte-Beckers, Jacqueline ULiege; Bojinov, V. et al

in Journal de Chimie Physique et de Physico-Chimie Biologique (1997), 94[5]

Cette étude est consacrée à la formation du graphite dans des fontes à haute teneur en chrome (8%) et spécialement à la détermination des conditions de formation de graphite secondaire par des traitements ... [more ▼]

Cette étude est consacrée à la formation du graphite dans des fontes à haute teneur en chrome (8%) et spécialement à la détermination des conditions de formation de graphite secondaire par des traitements thermiques adaptés. La solidification de la fonte étudiée a été examinée par analyse thermique différentielle (ATD). Les effets d'un traitement à haute température ont été examinés à la fois par calorimétrie et dilatomètre différentielle. Le graphite primaire se forme vers 950°C. Le graphite secondaire précipite sur le graphite primaire lors du traitement de déstabilisation de l'austénite à haute température. La forme et la quantité de graphite secondaire dépendent de la température de traitement. [less ▲]

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See detailDilatometric Investigations on the Decomposition of Austenite in Two Medium-Carbon Steels With and Without Cr and Mo Additions
Mertens, Anne ULiege; Brown, Andrew J.; Zhao, Lie et al

in Proceedings of the MS&T'04 Conference (2004, September)

The interest of small additions of Cr (< 3 wt %) and Mo (~ 0.2 wt %) in steels for automotive and bearing applications has been recently highlighted. The microstructure of these steels is primarily based ... [more ▼]

The interest of small additions of Cr (< 3 wt %) and Mo (~ 0.2 wt %) in steels for automotive and bearing applications has been recently highlighted. The microstructure of these steels is primarily based on the bainitic phase. In order to optimize their microstructure and their mechanical properties, it is, therefore, of primary importance to gain a better understanding of the influence of Cr and Mo on austenite decomposition in varying temperature regimes with a particular attention to the transition between ferrite, bainite and martensite formation. In the present work, dilatometry, combined with detailed microstructural characterisation, is used in order to obtain a full view of transformation processes and kinetics in two medium-carbon steels with and without Cr and Mo additions. [less ▲]

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See detailThe Dilemma of Separation versus Union : the New Dynamic of Nationalist Politics in Belgium
Martiniello, Marco ULiege

Scientific conference (1995, March 02)

Detailed reference viewed: 10 (0 ULiège)
See detailThe Dilemma of Separation versus Union : the new Dynamic of Nationalist Politics in Belgium
Martiniello, Marco ULiege

in Wicker, H.-R. (Ed.) Rethinking Nationalism and Ethnicity. The Struggle for Meaning and Order in Europe (1997)

Detailed reference viewed: 64 (0 ULiège)
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See detailDe dilemma's van een wolfman
Spinoy, Erik ULiege

in Groes, Bas (Ed.) McLiteratuur. Gesprekken met Nederlandse en Vlaamse schrijvers over globalisering (2005)

This is the text of an interview taken by the Dutch researcher Bas Groes, on the subject of globalisation and literature.

Detailed reference viewed: 13 (1 ULiège)
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See detailThe dilemmas for a sustainable food sector
Mormont, Marc ULiege; Stassart, Pierre M ULiege

in Stassart, Pierre M (Ed.) Proceedings of the International Confernce (2008)

Detailed reference viewed: 18 (1 ULiège)
See detaildilemmas in cluster analysis
Sauvageot, Nicolas ULiege

Conference (2013, November 27)

Cluster analysis is a set of multivariate procedures to detect natural groupings in data. The objective of those methods is to group a set of objects in such a way that objects in the same group (called ... [more ▼]

Cluster analysis is a set of multivariate procedures to detect natural groupings in data. The objective of those methods is to group a set of objects in such a way that objects in the same group (called cluster) are more similar to each other than to those in other groups. Organizing data into sensible groupings arises naturally in many scientific fields as psychology, biology, statistics, bioinformatics, marketing, and so on. However, the obtained solution is not unique and it strongly depends upon the analyst’s choices. Representation and normalization scheme, selection of distance measures and a clustering algorithm, choice of the number of clusters and their interpretations are all subjective choices which change the final output. Those decisions are mainly guided by the purpose of grouping, domain knowledge and the individual data set. Therefore, cluster validity assessment should be performed to evaluate the validity of the obtained clusters and to find the partitioning that best fits the underlying data. I provide a brief overview of clustering, summarize well known algorithms, and discuss the major challenges and key issues in performing clustering analysis. [less ▲]

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See detailLe dilemme de Cournot
Bair, Jacques ULiege; Henry, Valérie ULiege

in Tangente (2010), 135

Cournot, le père fondateur de l'économie mathématique, a écrit son oeuvre dans un langage mathématique, puis, 25 ans plus tard, a reformulé les mêmes idées dans un langage littéraire. Dans cet article ... [more ▼]

Cournot, le père fondateur de l'économie mathématique, a écrit son oeuvre dans un langage mathématique, puis, 25 ans plus tard, a reformulé les mêmes idées dans un langage littéraire. Dans cet article sont comparées ces deux présentations pour un même problème. [less ▲]

Detailed reference viewed: 34 (2 ULiège)
See detailLes dilemmes de la démocratie et l'éthique
Seba, Jean-Renaud ULiege

Book published by Faculté Philosophie et Lettres, ULg (1981)

Detailed reference viewed: 65 (2 ULiège)
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See detailDilthey et l'empirisme psychologique
Dewalque, Arnaud ULiege

in Camilleri, Sylvain; Fagniez, Guillaume (Eds.) Dilthey et l'histoire (2016)

Je discute ici le projet diltheyen d'une "fondation psychologique des sciences de l'esprit". Je suggère que ce projet peut être rapproché d’un certain programme épistémologique baptisé "empirisme ... [more ▼]

Je discute ici le projet diltheyen d'une "fondation psychologique des sciences de l'esprit". Je suggère que ce projet peut être rapproché d’un certain programme épistémologique baptisé "empirisme psychologique". L’hypothèse qui se trouve à la base de l’empirisme psychologique est la suivante : l’expérience interne, psychologique, est la source des concepts au moyen desquels nous pouvons penser et connaître le monde. Après avoir brièvement reconstruit le programme diltheyen en ce sens, j'examine deux objections qui ont été soulevées contre lui: l'objection néokantienne (Windelband, Rickert) et l'objection psychologique (Ebbinghaus, Stumpf). La seconde, selon moi, met en évidence une difficulté réelle du projet de Dilthey: la "connexion structurelle de la vie" dans sa totalité peut difficilement être considérée comme "donnée" dans l'expérience interne, ainsi que l'affirme Dilthey. Je soutient donc que le programme de l'empirisme psychologique peut être poursuivi à condition de le débarrasser de cette thèse problématique. [less ▲]

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See detailDiluted trickme bed reactors as a tool to measure Thiele efficiency of catalyst particles in three pahse systems
Ruiz, Patricio; Crine, Michel ULiege; Germain, Albert ULiege et al

in Actas do 9° Simposio Iberoaùaricano de Catalise (1984)

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See detailA Dim Candidate Companion to epsilon Cephei
Mawet, D.; Mennesson, B.; Serabyn, E. et al

in Astrophysical Journal Letters (2011), 738

Using a vector vortex coronagraph behind the 1.5 m well-corrected subaperture (WCS) at Palomar, we detected a second object very close to epsilon Cephei, a δ Scuti F0 IV star. The candidate companion, ~50 ... [more ▼]

Using a vector vortex coronagraph behind the 1.5 m well-corrected subaperture (WCS) at Palomar, we detected a second object very close to epsilon Cephei, a δ Scuti F0 IV star. The candidate companion, ~50 times fainter than epsilon Cephei, if physically associated, is a late-type K or early M star, and lies at an angular separation of 330 mas, or 1.1 λ/D for the WCS, making it the smallest angle detection ever realized with a coronagraph in terms of λ/D units. The projected separation of the putative companion is ~8.6 AU, most likely on a highly eccentric orbit. The recently detected near-infrared excess is thus likely not due to hot dust. Moreover, we also show that the previously reported IRAS 60 μm excess was due to source confusion on the galactic plane. [less ▲]

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See detailDimanche, Edmond Bernhard, 1963 : Ambiguités du cinématographe
Mélon, Marc-Emmanuel ULiege

in Dujardin, Francis (Ed.) Regards sur le réel. Vingt documentaires du vingtième siècle (2013)

Analyse du film "Dimanche" d'Edmond Bernhard

Detailed reference viewed: 113 (0 ULiège)
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See detailDimebon enhances hippocampus-dependent learning in both appetitive and inhibitory memory tasks in mice
Vignisse, Julie ULiege; Steinbusch, Harry W.M.; Bolkunov, Alexei et al

Poster (2011, January 31)

Dimebon, a compound recently proposed for a treatment of Alzheimer’s disorder was suggested to have memory enhancing properties in pre-clinical and clinical studies. We investigated whether dimebon at ... [more ▼]

Dimebon, a compound recently proposed for a treatment of Alzheimer’s disorder was suggested to have memory enhancing properties in pre-clinical and clinical studies. We investigated whether dimebon at doses acutely (0.1 mg/kg and 0.5 mg/kg) or repeatedly (0.1 mg/kg) administered to mice via i.p. injections, increases memory scores respectively in an appetitive and an inhibitory learning task. Acute treatment with dimebon at the dose 0.1 mg/kg did not affect learning scores in either 3-month-old C57BL/6N or CD1 mice. Acute treatment with higher dose of dimebon (0.5mg/kg) was found to enhance inhibitory learning in 3- and 7-month-old mice as shown in the step-down avoidance paradigm in C57BL/6N mice. No effects on learning were seen in CD1 mice. In a model of appetitive learning, a spatial version of the Y-maze, repeated treatment with dimebon increased the rate of correct choices and decreased the latency of accessing a water reward after water deprivation. Repeated administration of dimebon also increased the duration of drinking behaviour during training/testing procedures although behaviours in others tests or water consumption were not altered. Acute treatment of water-deprived and non-water-deprived mice with dimebon also did not affect their water intake. Our data suggest that dimebon enhances hippocampus-dependent learning in both appetitive and inhibitory tasks in mice. [less ▲]

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See detailDimebon enhances hippocampus-dependent learning in both appetitive and inhibitory memory tasks in mice.
Vignisse, Julie ULiege; Steinbusch, Harry W. M.; Bolkunov, Alexei et al

in Progress in Neuro-Psychopharmacology & Biological Psychiatry (2011), 35(2), 510-22

Pre-clinical and clinical studies on dimebon (dimebolin or latrepirdine) have demonstrated its use as a cognitive enhancer. Here, we show that dimebon administered to 3-month-old C57BL6N mice 15 min prior ... [more ▼]

Pre-clinical and clinical studies on dimebon (dimebolin or latrepirdine) have demonstrated its use as a cognitive enhancer. Here, we show that dimebon administered to 3-month-old C57BL6N mice 15 min prior to training in both appetitive and inhibitory learning tasks via repeated (0.1 mg/kg) and acute (0.5 mg/kg) i.p. injections, respectively, increases memory scores. Acute treatment with dimebon was found to enhance inhibitory learning, as also shown in the step-down avoidance paradigm in 7-month-old mice. Bolus administration of dimebon did not affect the animals' locomotion, exploration or anxiety-like behaviour, with the exception of exploratory behaviour in older mice in the novel cage test. In a model of appetitive learning, a spatial version of the Y-maze, dimebon increased the rate of correct choices and decreased the latency of accessing a water reward after water deprivation, and increased the duration of drinking behaviour during training/testing procedures. Repeated treatment with dimebon did not alter the behaviours in other tests or water consumption. Acute treatment of water-deprived and non-water-deprived mice with dimebon also did not affect their water intake. Our data suggest that dimebon enhances hippocampus-dependent learning in both appetitive and inhibitory tasks in mice. [less ▲]

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See detailDimebon Enhances Hippocampus-Dependent Learning in Mouse Models of Appetitive Y-Maze and Inhibitory Step-Down Memory Tasks in Mice
Vignisse, Julie ULiege; Steinbusch, Harry W.M.; Bolkunov, Alexei et al

Poster (2011, February 23)

Dimebon, a compound recently proposed for a treatment of Alzheimer’s disorder, was suggested to have memory enhancing properties in pre-clinical and clinical studies. We investigated whether dimebon at ... [more ▼]

Dimebon, a compound recently proposed for a treatment of Alzheimer’s disorder, was suggested to have memory enhancing properties in pre-clinical and clinical studies. We investigated whether dimebon at doses acutely (0.1 mg/kg and 0.5 mg/kg) or repeatedly (0.1 mg/kg) administered to mice via i.p. injections, increases memory scores respectively in an appetitive and an inhibitory learning task. Acute treatment with dimebon at the dose 0.1 mg/kg did not affect learning scores in 3-month-old C57BL/6N. Acute treatment with higher dose of dimebon (0.5mg/kg) was found to enhance inhibitory learning in 3-month-old mice as shown in the step-down avoidance paradigm in C57BL/6N mice. In a model of appetitive learning, a spatial version of the Y-maze, repeated treatment with dimebon increased the rate of correct choices and decreased the latency of accessing a water reward after water deprivation. Repeated administration of dimebon also increased the duration of drinking behaviour during training/testing procedures although water consumption behaviour was not altered. Additional behavioural tests were carried out to investigate possible non-specific effects of dimebon on parameters of drinking, anxiety and exploration/locomotion. Our data suggest that dimebon enhances hippocampus-dependent learning in both appetitive and inhibitory tasks in mice. [less ▲]

Detailed reference viewed: 47 (1 ULiège)
See detailLa dimension "famille de situations" de la notion de compétence: Quelle objectivité? Quelle validité ?
Chenu, Florent ULiege

in Alves, P.; Figari, G.; Rodrigues, P. (Eds.) et al Evaluation des compétences et apprentissages expérientiels : savoirs, modèles et méthodes (2006)

Detailed reference viewed: 37 (3 ULiège)
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See detailLa dimension "famille de situations" de la notion de compétence: Quelle objectivité? Quelle validité?
Chenu, Florent ULiege

in Actes du 17e Colloque de l’Association pour le Développement des Méthodologies d’Evalutaion en Education - Reconnaître et valoriser les acquis de l’expérience. Universidade de Lisboa, Portugal, Novembre 2004. (2004)

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See detailLa dimension "travail", un élément clé pour le maintien de nos systèmes laitiers
Turlot, Amélie; Froidmont, Eric; Bauraind, Catherine et al

in Centre wallon de Recherches agronomomiques (Ed.) 18ème Carrefour des Productions Animales "Nouvelles approches pour une optimisation de nos élevages laitiers" (2013)

Les agriculteurs sont les principaux architectes du milieu rural wallon. En effet, ils assurent la gestion de près de la moitié de la superficie de la Wallonie. On observe néanmoins, depuis quelques ... [more ▼]

Les agriculteurs sont les principaux architectes du milieu rural wallon. En effet, ils assurent la gestion de près de la moitié de la superficie de la Wallonie. On observe néanmoins, depuis quelques années, une régression lente (3%/an) et constante de leur effectif. Confrontés à un contexte changeant, de plus en plus concurrentiel, les agriculteurs sont face à des choix stratégiques difficiles en vue d’optimiser l’efficience de leur exploitation. Pour y parvenir, ils doivent mener une réflexion globale de leur mode de production et intégrer tous les aspects assurant la durabilité de leur exploitation. Pour les aider dans cette démarche, une analyse de la durabilité de 90 exploitations « 100% Lait » (>95% de vaches laitières et pas de culture de rente) a été réalisée dans le cadre de DuraLait et de DuraLait Plus. Ces études sont subsidiées par la DGARNE, Direction de la Qualité. Les piliers économique et social de la durabilité ont été plus particulièrement étudiés dans ces projets. L’organisation du travail a été spécifiquement traitée car elle constitue un enjeu essentiel pour l’avenir de l’agriculture. En effet, les agriculteurs souhaitent soulager la pénibilité de leur travail. Dans un contexte économique difficile, cette dimension est essentielle pour envisager le maintien de l’agriculture dans notre région. Le présent article s’intéresse uniquement aux données relatives à l’organisation du travail. [less ▲]

Detailed reference viewed: 83 (9 ULiège)