Publications ORBi OA
Bookmark and Share    
Full Text
Peer Reviewed
See detailComputational treatment of the error distribution in nonparametric regression with right-censored and selection-biased data
Heuchenne, Cédric ULg; Laurent, Géraldine ULg

in Proceedings of the 19th International Conference on Computational Statistics (2010)

Detailed reference viewed: 45 (12 ULg)
Full Text
See detailLe cheminement de l'approche écologique: du paradigme processus-produit au modèle heuristique du processus enseignement-apprentissage
Cloes, Marc ULg; Roy, Martin

in Musart, M.; Loquet, M.; Carlier, G. (Eds.) Sciences de l’intervention en EPS et en sport : résultats de recherches et fondements théoriques (2010)

Teaching analysis in physical education started in early 70'. The initial research paradigm responded to the process-product model. Across the years, influences of other paradigms brought an evolution of ... [more ▼]

Teaching analysis in physical education started in early 70'. The initial research paradigm responded to the process-product model. Across the years, influences of other paradigms brought an evolution of the research towards an heuristic model answering to an ecological conception of the teaching-learning process. [less ▲]

Detailed reference viewed: 802 (23 ULg)
Full Text
Peer Reviewed
See detailL’érosion des côtes meubles de l’extrême nord-est du Maroc
Salmon, Marc ULg; Sbai, Abdelkader; Boumeaza, Taieb et al

in Bulletin de la Société Géographique de Liège (2010), 54

L’érosion des littoraux est une réalité mondiale. Cette tendance relève en grande partie de deux facteurs : la diminution, voire la disparition dans certains cas, des apports sédimentaires à la côte, et ... [more ▼]

L’érosion des littoraux est une réalité mondiale. Cette tendance relève en grande partie de deux facteurs : la diminution, voire la disparition dans certains cas, des apports sédimentaires à la côte, et les mouvements eustatiques. L’érosion des côtes meubles est également liée à la montée du niveau relatif de la mer que l’on a évalué à environ 1 mm/an à l’échelle du dernier siècle. Cette évolution est d’autant plus préoccupante qu’aujourd’hui les apports sédimentaires ne suffi sent plus à compenser l’élévation du plan d’eau comme cela a pu être le cas à d’autres périodes de l’Holocène. Les littoraux du Maroc n’échappent pas à cette érosion. Dans le cadre d’un développement durable du pays, sa prise en compte lors de l’aménagement touristique des côtes est primordiale. Les interventions de l’homme au niveau du bassin de la Moulouya ou au niveau de la côte ont accentué le phénomène érosif. L’anthropisation des côtes s’est particulièrement accrue au cours des dernières années. Elle a des impacts géomorphologiques et environnementaux considérables et quantifi ables au départ de documents télédétectés (couvrant plus de 50 ans). Ainsi, la nouvelle station balnéaire de Saïdia risque de se voir privée à moyen ou long terme de sa plage. [less ▲]

Detailed reference viewed: 289 (37 ULg)
Full Text
See detailDe l’écran global à l’écran total : une expérience de cinéma mis à la rue
Tomasovic, Dick ULg

in Dubois, Philippe; Monvoisin, Frédéric; Biserna, Elena (Eds.) Extended Cinema. Le cinéma gagne du terrain (2010)

Detailed reference viewed: 50 (3 ULg)
Full Text
Peer Reviewed
See detailCoordination sphere of the third metal site is essential to the activity and metal selectivity of alkaline phosphatases
Koutsioulis, D.; Lyskowski, A.; Maki, S. et al

in Protein Science : A Publication of the Protein Society (2010), 19(1), 75-84

Alkaline phosphatases (APs) are commercially applied enzymes that catalyze the hydrolysis of phosphate monoesters by a reaction involving three active site metal ions. We have previously identified H135 ... [more ▼]

Alkaline phosphatases (APs) are commercially applied enzymes that catalyze the hydrolysis of phosphate monoesters by a reaction involving three active site metal ions. We have previously identified H135 as the key residue for controlling activity of the psychrophilic TAB5 AP (TAP). In this article, we describe three X-ray crystallographic structures on TAP variants H135E and H135D in complex with a variety of metal ions. The structural analysis is supported by thermodynamic and kinetic data. The AP catalysis essentially requires octahedral coordination in the M3 site, but stability is adjusted with the conformational freedom of the metal ion. Comparison with the mesophilic Escherichia coli, AP shows differences in the charge transfer network in providing the chemically optimal metal combination for catalysis. Our results provide explanation why the TAB5 and E. coli APs respond in an opposite way to mutagenesis in their active sites. They provide a lesson on chemical fine tuning and the importance of the second coordination sphere in defining metal specificity in enzymes. Understanding the framework of AP catalysis is essential in the efforts to design even more powerful tools for modern biotechnology. [less ▲]

Detailed reference viewed: 26 (1 ULg)
Full Text
Peer Reviewed
See detailLe cas clinique du mois. Le lymphangiome kystique du mesentere
Verdin, Vanessa ULg; Seydel, Benoît ULg; Detry, Olivier ULg et al

in Revue Médicale de Liège (2010), 65(11), 615-8

Cystic lymphangioma of the mesentery is a benign condition, probably of malformative origin, and frequently appearing in infancy. Its symptomatology can be very polymorphic. Its diagnosis is suspected by ... [more ▼]

Cystic lymphangioma of the mesentery is a benign condition, probably of malformative origin, and frequently appearing in infancy. Its symptomatology can be very polymorphic. Its diagnosis is suspected by ultrasonography and computed tomography, and definitely confirmed by pathology. About a recent case of cystic lymphangioma of the mesentery diagnosed and operated on at the university hospital of Liege in an adult patient, the authors review its classification and its therapeutic strategy. Surgical resection is indicated in symptomatic cystic lymphangioma. [less ▲]

Detailed reference viewed: 188 (9 ULg)
Full Text
See detailSpecies effect on the water use efficiency of a mixed forest of beech (Fagus sylvatica L.), Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) and silver fir (Abies alba Mill.) in Belgium Ardennes
Soubie, Rémy; Heinesch, Bernard ULg; Aubinet, Marc ULg et al

Poster (2010)

Induced by climate change, intensity and frequency of droughts should be more important for the next century. How does water availability affect the physiology of woody plants at the species and stand ... [more ▼]

Induced by climate change, intensity and frequency of droughts should be more important for the next century. How does water availability affect the physiology of woody plants at the species and stand scale? Carbon and water vapour fluxes measurements of a mixed forest (deciduous and coniferous) were performed for over ten years by the eddy covariance method in Belgian Ardennes (Aubinet et al, 2001) as a part of the CarboEurope project. Whereas carbon fluxes have been analyzed in detailed and good estimations of the Net Ecosystem Exchange (NEE) and Gross Primary Production (GPP) were obtained, a thorough analysis of water vapour fluxes remains to be done. Improving analysis of water vapour fluxes and monitoring species transpiration will contribute to the estimation of the water use efficiency, WUE, at both the species and stand scale. The WUE well characterizes the vegetation productivity and ecosystem response to environmental factors. It also allows evaluating the sensitivity of temperate woody species to drought. The species concerned are beech (Fagus sylvatica L.), Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) and silver fir (Abies alba Mill.). Since summer 2009 we monitor and analyze each species water use by measuring sap flow with the thermal dissipation method (Granier, 1987). Results at the species level will then be upscaled and compared to stand water vapour fluxes measurements obtained by the eddy covariance methodology. Transpiration of each species will be analyzed in relation with their own phenological and ecophysiological attributes, ecosystem soil and atmospheric conditions, to clarify among others their behaviour in case of water deficit. Data are actually analysed, the presented results will concern the 2009, and a part of 2010 growing season. [less ▲]

Detailed reference viewed: 133 (10 ULg)
Full Text
Peer Reviewed
See detailLouvre-Lens : Le Louvre autrement : des coulisses aux expositions
Bodéré, Audrey; Drouguet, Noémie ULg

in CeROArt : Conservation, Exposition, Restauration d'Objets d'Art (2010), 5

Detailed reference viewed: 35 (5 ULg)
Full Text
Peer Reviewed
See detailProcessing spatial and pitch attributes of sounds in the absence of visual experience : an fMRI study
Collignon, O; Vandewalle, Gilles ULg; Voss, P et al

in NeuroImage (2010), 51(Suppl. 1),

Detailed reference viewed: 24 (0 ULg)
Full Text
See detailStructures et fonctionnements des marchés du carbone
Xhignesse, Guillaume ULg

Master's dissertation (2010)

This study is interested in the theoretical and actual functioning of the emissions trading systems resulting from the coming into force of the Kyoto protocol in 2005 and the implementation of the ... [more ▼]

This study is interested in the theoretical and actual functioning of the emissions trading systems resulting from the coming into force of the Kyoto protocol in 2005 and the implementation of the European Union Emissions Trading Scheme (EU ETS) in 2002. The first part of the work is devoted to a literature-based analysis of the Kyoto flexible mechanisms: Emissions Trading (ET), Clean Development Mechanism (CDM) and Joint Implementation (JI). These mechanisms allow the protocol's parties to achieve their objectives at the lowest cost, using a "cap and trade" strategy. Concerning ET, the issues of the surplus of emissions rights (called "hot air") and the effects of the economic crisis are tackled. An analysis of the spatial and sectoral distribution of CDM and JI is also conducted. The second part concerns the EU ETS, the coordinated emissions trading system of the European Union. With this system, companies with a high level of emissions established in at least one of the member countries directly support a part of the global constraint resulting from the involvement of the EU in the Kyoto protocol. The system also use a "cap and trade" strategy and has been progressively spatially and sectorally extended. As for Kyoto flexible mechanisms, an analysis of the structure and the functioning of this market is done on the basis of the literature. In addition, the implementation of this system within the firms is described through actual business cases and is compared with theoretical observations. In particular, we focus on emissions monitoring and portfolio optimization. In the third part of the work, we conduct and in-depth qualitative analysis of the impact of EU ETS on the competititveness of firms subject to the constraint in Belgium. Interviews has been done with heads of four companies selected for their differences in terms of size, emissions level, sector and environmental policy. The answers collected are systematically compared with the multinational survey of the independent specialized consultant PointCarbon (2010). Results show that opinions about the impact on the competitiveness are strongly influenced by sector and size of the firms. [less ▲]

Detailed reference viewed: 166 (103 ULg)
Full Text
See detailThe Legacy of Invention: Determinism and Metafiction in Janet Frame's Mona Minim and the Smell of the Sun
Delrez, Marc ULg

in Ramsey-Kurz, Helga; Ratheiser, Ulla (Eds.) Antipodean Childhoods: Growing Up in Australia and New Zealand (2010)

Detailed reference viewed: 16 (1 ULg)
Full Text
Peer Reviewed
See detailAlterations in the mitotic index of Allium cepa induced by infusions of Pluchea sagittalis submitted to three different cultivation systems
Rossato, LV; Tedesco, SB; Laughinghouse IV, Haywood ULg et al

in Anais da Academia Brasileira de Ciencias (2010), 82(4), 857-860

Detailed reference viewed: 23 (0 ULg)
Full Text
Peer Reviewed
See detailSeed and Seedling Anatomy in Euterpe oleraceae Mart. during the Germination Process
Neto, MAM; Lobato, AKS; Alves, JD et al

in Journal of Food, Agriculture and Environment [=JFAE] (2010), 8(2), 1147-1152

Detailed reference viewed: 30 (1 ULg)
Full Text
Peer Reviewed
See detailLe nom de Spa, témoin d'un thermalisme antique dans la cité des Tongres. Sept étapes pour l'étymologie de Spa
Boutier, Marie-Guy ULg

in Iliescu, Marie; Siller-Runggaldier, Heidi; Danler, Paul (Eds.) Actes du XXVe Congrès international de linguistique et de philologie romanes (2010)

Detailed reference viewed: 115 (11 ULg)
Full Text
Peer Reviewed
See detailIschaemic mitral regurgitation: pathophysiology, outcomes and the conundrum of treatment.
PIERARD, Luc ULg; Carabello, B. A.

in European Heart Journal (2010), 31

Ischaemic mitral regurgitation is a frequent complication of left ventricular global or regional pathological remodelling due to chronic coronary artery disease. It is not a valve disease but represents ... [more ▼]

Ischaemic mitral regurgitation is a frequent complication of left ventricular global or regional pathological remodelling due to chronic coronary artery disease. It is not a valve disease but represents the valvular consequences of increased tethering forces (papillary muscles displacement leading to a more apical position of the leaflets and their coaptation point) and reduced closing forces (reduced contractility, dyssynchrony of the papillary muscles, intra-left ventricular dyssynchrony). Although mitral regurgitation has an unloading effect and reduces impedance, the volume overload begets further left ventricular dilatation, increases ventricular wall stress leading to worsened performance. Ischaemic mitral regurgitation is characteristically dynamic: its severity may vary with haemodynamic conditions. Both the severity of ischaemic mitral regurgitation and its dynamic component worsen prognosis. There are numerous possible treatment modalities, but the management of the individual patient remains difficult. Medical therapy is mandatory; revascularization procedures are frequently not sufficient to reduce mitral regurgitation; the role of combined surgical therapy by mitral valve repair is not yet defined in the absence of large randomized trial. Some patients are good candidates for cardiac resynchronization therapy that may reduce the amount of regurgitation. New therapeutic targets are under investigation. [less ▲]

Detailed reference viewed: 28 (2 ULg)
Full Text
See detailAnalyse des portes d'écluse sous sollicitation sismique
Buldgen, Loïc ULg

Master's dissertation (2010)

Detailed reference viewed: 73 (8 ULg)
Full Text
Peer Reviewed
See detailSleep spindles and neural activity changes in the cortico-striatal system underlie motor sequence consolidation
Barakat, M; Carrier, J; Debas, K et al

in NeuroImage (2010), 51(Suppl. 1),

Detailed reference viewed: 20 (1 ULg)
Full Text
Peer Reviewed
See detailA validation process for CFD use in building physics.
Barbason, Mathieu ULg; van Moeseke, Geoffrey; Reiter, Sigrid ULg

in Proceedings of the 7th conference on Indoor Air Quality, Ventilation and Energy Conservation in buildings (2010)

Due to growing interests in environmental and building energy performance concerns, building physics simulations - and especially Computational Fluid Dynamics (CFD) – are more and more used. Unfortunately ... [more ▼]

Due to growing interests in environmental and building energy performance concerns, building physics simulations - and especially Computational Fluid Dynamics (CFD) – are more and more used. Unfortunately, until now, there is no clearly defined method to validate the use of these models by building engineers. This paper describes a validation process of CFD tools dealing with physical phenomena occurring in building physics. The comparison between experimental data and numerical results proves the validity of CFD use and its specific contribution to building physics modelling in comparison with thermal multizonal models. Thanks to this validation process, building engineers can improve their CFD simulations performance and their comprehension of building physics. [less ▲]

Detailed reference viewed: 164 (15 ULg)