References of "2011"
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See detailLand Managment for Urban Dynamics. Innovative tools and practices in a changing Europe
Tira, M.; van der Krabben, E.; Zanon, B. et al

Book published by Maggioli Editore (2011)

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See detailScreening for colorectal cancer in asymptomatic average risk patients: role of imaging.
Hock, D.; Ouhadi, R.; Materne, R. et al

in Acta Gastro-Enterologica Belgica (2011), 74(1), 70-6

Early detection of colorectal cancer or advanced adenomas is a public health priority in many industrialized countries. There are various methods of screening average risk individuals for colorectal ... [more ▼]

Early detection of colorectal cancer or advanced adenomas is a public health priority in many industrialized countries. There are various methods of screening average risk individuals for colorectal cancer, and their effectiveness may depend on subjective parameters like local expertise and patient's preferences. This paper reviews these tests with special emphasis regarding imaging techniques that aim to provide less-invasive alternatives to optical colonoscopy (OC) which is the standard of reference. Both Double-Contrast Barium Enema (DCBE) and Virtual Colonoscopy (VC) have >90% sensitivity compared to OC in the detection of clinically relevant colonic lesions. Nevertheless, VC may have an edge over DCBE for technical and reproductivity reasons, as well as greater learning opportunities. Imaging techniques criticisms regarding diminutive and flat lesions, cost, radiation exposure and effects on gastroenterological practice are addressed. [less ▲]

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See detailNonlinear Normal Modes: A Finite Element Approach
Renson, Ludovic ULg; Kerschen, Gaëtan ULg

Conference (2011)

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See detailcompte rendu de : Giuseppe ARICÒ – Massimo RIVOLTELLA (Ed.), La riflessione sul teatro nella cultura romana
Rochette, Bruno ULg

in Antiquité Classique : Revue Interuniversitaire d'Etudes Classiques (2011)

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See detailDie Narrenburg im Waldwinkel. Theodor Storms Auseinandersetzung mit Adalbert Stifter
Leyh, Valérie ULg

in Sprachkunst. Beiträge zur Literaturwissenschaft (2011), 42(1), 1-28

Comme l'ont déjà évoqué plusieurs chercheurs, la nouvelle "Waldwinkel" (1874) de Theodor Storm montre de nombreuses correspondances avec le récit "Die Narrenburg" (1842) d'Adalbert Stifter. Or jusqu'à ... [more ▼]

Comme l'ont déjà évoqué plusieurs chercheurs, la nouvelle "Waldwinkel" (1874) de Theodor Storm montre de nombreuses correspondances avec le récit "Die Narrenburg" (1842) d'Adalbert Stifter. Or jusqu'à présent, ce rapport étroit entre ces deux textes narratifs n'a pas encore été étudié en profondeur. Cet article vise dès lors à analyser les continuités et discontinuités entre ces deux récits. Une étude minutieuse des stratégies narratives ainsi qu'une analyse comparative des personnages principaux permettent de constater que la nouvelle de Storm fait, certes, renaître le monde de Stifter, mais pour le faire apparaître comme un non-lieu, une utopie. La noblesse, qui chez Stifter parvient encore à se renouveler en s'alliant à la bourgeoisie, est ainsi, chez Storm, vouée au déclin. Le monde représenté dans "Waldwinkel" est, quant à lui, marqué par la réalité du capitalisme et du combat de tous contre tous. [less ▲]

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See detailDeterminants of high, median and low rates of caesarean deliveries in Belgium
Absil, Gaëtan ULg; Van Parys, A. S.; Bednarek, Stéphanie et al

Report (2011)

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See detailFacteurs de variabilité spatiale des caractéristiques des débits minimums annuels des rivières wallonnes (Belgique)
Vadnais, Marie-Ève; Assani, Ali A.; Hallot, Eric ULg et al

in Revue des Sciences de l'Eau = Journal of Water Science (2011), 24(3), 311-327

The goal of this study was to determine which environmental factors affect the spatial variability of annual minimum streamflow characteristics for 34 rivers in Wallonia (Belgium) using two complementary ... [more ▼]

The goal of this study was to determine which environmental factors affect the spatial variability of annual minimum streamflow characteristics for 34 rivers in Wallonia (Belgium) using two complementary methods: theascending hierarchical classification method and the linear correlation method. Both methods were applied after principal component analysis transformation was applied to the data. The ascending hierarchical classification method (Ward’s method) identified the effect of lithology and anthropogenic activity (groundwater pumping) on the fundamental characteristics of annual minimum flows. Rivers that drain a relatively permeable substrate are characterized by very high flow volumes with low interannual variability, high interannual variability of the period of occurrence, and small asymmetry coefficients. Rivers that drain low permeability or impermeable substrates show the opposite patterns. Rivers in which flow is subjected to artificial influences are characterized by greater variability of the magnitude and of the period of occurrence of annual minimum flows than natural rivers. Analysis of linear correlations between streamflow characteristics and environmental factors highlighted a correlation between the form of the distribution curves of annual minimum flows and several environmental factors (climate, land use, location and physiographic characteristics of the watersheds). [less ▲]

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See detailPhase transitions in vibrated granular systems in microgravity
Opsomer, Eric ULg; Vandewalle, Nicolas ULg; Ludewig, François ULg

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2011)

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See detailA naming convention for the Piano Key Weirs geometrical parameters
Pralong, Julien; Vermeulen, Julien; Blancher, Benoit et al

in Erpicum, Sébastien; Laugier, Frédérique; Boillat, Jean-Louis (Eds.) et al Labyrinth and Piano Key Weirs - PKW 2011 (2011)

Flood management is more than ever an issue for dam designers and engineering consulting firms in charge of rehabilitation works. Piano Key Weirs are a new cost-effective type of spillway designed to ... [more ▼]

Flood management is more than ever an issue for dam designers and engineering consulting firms in charge of rehabilitation works. Piano Key Weirs are a new cost-effective type of spillway designed to improve dams discharge capacity. These structures are particularly attractive: they can easily be built on existing structures and enable very high discharge capacities. Therefore, Piano Key Weirs are nowadays studied worldwide. Piano Key Weir description involves a lot of geometrical parameters (more than 30), which designations are not already universally defined. A naming convention is required to enhance exchanges and cooperation between the numerous developers. A naming convention has been developed at EDF – Hydro Engineering Center in cooperation with the Laboratory of Hydraulic Constructions (LCH), Ecole Polytechnique Fédérale de Lausanne and the Laboratory of Hydrology, Applied Hydrodynamics and Hydraulic Constructions (HACH), University of Liege. This paper describes the proposed naming convention and gives definitions and notations of the various geometrical parameters. This work represents a first attempt which should be updated with the contribution of stakeholders involved in this topic. [less ▲]

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See detailMaîtrise de la situation d’enseignement-apprentissage et savoirs professionnels des futurs enseignants
Beckers, Jacqueline ULg

in Maubant, Philippe; Martineau, Stéphane (Eds.) Fondements des pratiques professionnelles des enseignants (2011)

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See detailIntérêt d'une augmentation de dose des analogues de la somatostatine dans l'acromégalie
Vasilev, Vladimir; Beckers, Albert ULg

in Andrologic (2011), 7(4),

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See detailL'imperatrice. Le Molte Vite di Indira Gandhi
Maiorano, Diego ULg

in Storia della Storiografia (2011), 58

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See detailOptimal design of multi-subject blocked fMRI experiments.
Maus, Bärbel ULg; van Breukelen, Gerard J P; Goebel, Rainer et al

in NeuroImage (2011), 56(3), 1338-1352

The design of a multi-subject fMRI experiment needs specification of the number of subjects and scanning time per subject. For example, for a blocked design with conditions A or B, fixed block length and ... [more ▼]

The design of a multi-subject fMRI experiment needs specification of the number of subjects and scanning time per subject. For example, for a blocked design with conditions A or B, fixed block length and block order ABN, where N denotes a null block, the optimal number of cycles of ABN and the optimal number of subjects have to be determined. This paper presents a method to determine the optimal number of subjects and optimal number of cycles for a blocked design based on the A-optimality criterion and a linear cost function by which the number of cycles and the number of subjects are restricted. Estimation of individual stimulus effects and estimation of contrasts between stimulus effects are both considered. The mixed-effects model is applied and analytical results for the A-optimal number of subjects and A-optimal number of cycles are obtained under the assumption of uncorrelated errors. For correlated errors with a first-order autoregressive (AR1) error structure, numerical results are presented. Our results show how the optimal number of cycles and subjects depend on the within- to between-subject variance ratio. Our method is a new approach to determine the optimal scanning time and optimal number of subjects for a multi-subject fMRI experiment. In contrast to previous results based on power analyses, the optimal number of cycles and subjects can be described analytically and costs are considered. [less ▲]

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See detailNegations at Medinet Habu
Gillen, Todd Jonathan ULg

Conference (2011)

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See detailBrain natriuretic peptide in asymptomatic degenerative mitral regurgitation: determinants and impact on outcome.
Van de Heyning, C; Magne, Julien ULg; Mahjoub, H et al

Conference (2011)

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See detailMarket integration: trade vs. economic geography
Tharakan, Joseph ULg; Thisse, Jacques

in Jovanovic, Miroslav (Ed.) International Handbook on the Economics of Integration (2011)

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See detailA discrete competitive facility location model with variable attractiveness
Kucukaydin, Hande ULg; Aras, Necati; Altinel, I. Kuban

in Journal of the Operational Research Society (2011), 62(9), 1726-1741

We consider the discrete version of the competitive facility location problem in which new facilities have to be located by a new market entrant firm to compete against already existing facilities that ... [more ▼]

We consider the discrete version of the competitive facility location problem in which new facilities have to be located by a new market entrant firm to compete against already existing facilities that may belong to one or more competitors. The demand is assumed to be aggregated at certain points in the plane and the new facilities can be located at predetermined candidate sites. We employ Huff’s gravity-based rule in modelling the behaviour of the customers where the probability that customers at a demand point patronize a certain facility is proportional to the facility attractiveness and inversely proportional to the distance between the facility site and demand point. The objective of the firm is to determine the locations of the new facilities and their attractiveness levels so as to maximize the profit, which is calculated as the revenue from the customers less the fixed cost of opening the facilities and variable cost of setting their attractiveness levels. We formulate a mixed-integer nonlinear programming model for this problem and propose three methods for its solution: a Lagrangean heuristic, a branch-and-bound method with Lagrangean relaxation, and another branch-and-bound method with nonlinear programming relaxation. Computational results obtained on a set of randomly generated instances show that the last method outperforms the others in terms of accuracy and efficiency and can provide an optimal solution in a reasonable amount of time. [less ▲]

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