Publications ORBi OA
Bookmark and Share    
Full Text
Peer Reviewed
See detailStress echocardiography in horses - a review
Sandersen, Charlotte ULg; Amory, Hélène ULg

in Pferdeheilkunde (2006)

Detailed reference viewed: 21 (6 ULg)
Full Text
Peer Reviewed
See detailPlace de la radiotherapie dans le traitement du cancer du sein. Indications actuelles et perspectives
Meyns, Mia ULg; Jansen, Nicolas ULg; Deneufbourg, Jean-Marie ULg

in Revue Médicale de Liège (2006), 61(9), 623-31

Radiotherapy is an important part of breast cancer treatment. After breast conserving surgery, a dose of 50 Grays (Gy) is administered to the entire breast. Boost by external radiotherapy or brachytherapy ... [more ▼]

Radiotherapy is an important part of breast cancer treatment. After breast conserving surgery, a dose of 50 Grays (Gy) is administered to the entire breast. Boost by external radiotherapy or brachytherapy improves local control especially for women under fifty. For lobular in situ lesions, no additional treatment is required, while intraductal lesions are treated with post-operative radiotherapy in case of Van Nuys score of 7, 8 or 9. After mastectomy, irradiation is proposed in case of skin involvement, invasion of pectoral muscle, positivity of at least 3 axillary lymph nodes, SBR III grade, T3 stage or multifocality where the sum of tumour diameters are >5 cm. Irradiation of the axilla has become exceptional. In node positive patients, the supraclavicular region receives 50 Gy with low energy photons, whereas the internal mammary chain is treated at the same dose but half is administered by low energy photons et half by electrons. Exclusive or preoperative irradiation is rare, because of new chemotherapy schedules, new drugs and hormonotherapy developments. Neoadjuvant chemotherapy enhances possibilities of conservative surgery it is followed by radiotherapy depending on the same indiciations listed above. Re-irradiation is possible but one must be aware of the higher risk of late toxicity. Nowadays, major side-effects are rare but close follow-up during and after treatment is required from the radiation oncologist to detect, evaluate, prevent and even treat possible complications. [less ▲]

Detailed reference viewed: 251 (4 ULg)
Full Text
See detailOptimisation topologique de micropoutres en vue de maximiser la tension de pull-in
Lemaire, Etienne ULg

Master of advanced studies dissertation (2006)

Detailed reference viewed: 64 (19 ULg)
Full Text
See detailLes activité de détente et de loisirs dans les bois communaux d'Esneux et Tilf
Colson, Vincent ULg

in Bulletin communal d'Esneux (2006), (45), 2

Detailed reference viewed: 32 (7 ULg)
Full Text
See detailLa fréquentation des promenades balisées en forêt wallonne. Résultat d'une enquête menée avec la collaboration de huit organismes touristiques wallons
Colson, Vincent ULg

in Les Echos du Tourisme (2006), (44), 7-8

Dans le cadre d’une étude portant sur l’évaluation de la fonction récréative de la forêt wallonne, une enquête a été réalisée entre le 1er mai et le 7 novembre 2005 auprès des utilisateurs de cartes de ... [more ▼]

Dans le cadre d’une étude portant sur l’évaluation de la fonction récréative de la forêt wallonne, une enquête a été réalisée entre le 1er mai et le 7 novembre 2005 auprès des utilisateurs de cartes de promenades de 8 organismes touristiques (Florenville, Spa, Saint-Hubert, Nassogne, Assesse, Viroinval, Lobbes et Villersla- Ville). Les personnes acquérant une carte de promenades étaient invitées à répondre à un questionnaire à renvoyer au moyen d’une enveloppe « port payé par le destinataire ». Malgré un faible taux de réponse (196 soit 6,3%), des informations intéressantes ont pu être obtenues sur le profil des promeneurs et sur leurs desiderata. Cet article reprend quelques-uns des principaux résultats obtenus. [less ▲]

Detailed reference viewed: 73 (8 ULg)
Full Text
See detailPotentialités du Robinier en Wallonie
Claessens, Hugues ULg; Alderweireld, Matthieu ULg; Thibaut, A.

in Forêt Wallonne (2006), (84), 30-39

Le très controversé robinier (une bonne trouvaille pour les uns, une menace écologique pour les autres) fait l’objet de plusieurs études en Région wallonne, entre autres au sein de « l’accord cadre de ... [more ▼]

Le très controversé robinier (une bonne trouvaille pour les uns, une menace écologique pour les autres) fait l’objet de plusieurs études en Région wallonne, entre autres au sein de « l’accord cadre de recherche forestière » depuis 2000. L’objectif est de mieux connaître cette essence et son potentiel en sylviculture, et d’évaluer, à partir d’observations et de mesures réalisées au sein de nos peuplements régionaux, si les connaissances étrangères (hongroises surtout) peuvent être transposées à la Wallonie, comme cela a notamment été le cas dans le Fichier écologique des essences. [less ▲]

Detailed reference viewed: 87 (22 ULg)
Full Text
See detailOptimal synthesis of planar mechanisms via an extensible-link approach
Collard, Jean-François; Duysinx, Pierre ULg; Fisette, Paul

(2006, September)

Detailed reference viewed: 25 (6 ULg)
Full Text
See detailEvaluation de la méthode ADESA d'inventaire des périmètres d'intérêt paysager et points de vue remarquables au regard de l'objectif de participation du public de la Convention européenne du paysage
Droeven, Emilie ULg

Master of advanced studies dissertation (2006)

In both scientific and political discussions, recent decades have seen a gradual developement of a consensus for the need to implicate participants in environmental and spatial planning, decision-making ... [more ▼]

In both scientific and political discussions, recent decades have seen a gradual developement of a consensus for the need to implicate participants in environmental and spatial planning, decision-making and project implementation. Considering the landscape, public participation is notably mentioned in the recent European Landscape Convention (Florence, October 2000). In the early 1990’s the Ministry for the Walloon Region has entrusted to ADESA (Association Action et Défense de l’Environnement de la Vallée de la Senne et de ses Affluents) to identify the remarkable landscape and the interesting viewpoints in the perspective of a total revision of the land affectation plans. The method elaborated integrates the public participation. Our objective is to assess the procedure led by ADESA. Which stakeholders were associated ? According to which methods ? What are the pros and cons of the method ? Which types of landscapes were identified and why ? [less ▲]

Detailed reference viewed: 390 (31 ULg)
Full Text
Peer Reviewed
See detailA scalable heuristic for hybrid IGP/MPLS traffic engineering - Case study on an operational network
Skivée, Fabian; Balon, Simon ULg; Leduc, Guy ULg

in 14th IEEE International Conference on Networks (2006, September)

In current IP networks, a classical way to achieve traffic engineering is to optimise the link metrics. This operation cannot be done too often and can affect the route of a lot of traffic. Multiprotocol ... [more ▼]

In current IP networks, a classical way to achieve traffic engineering is to optimise the link metrics. This operation cannot be done too often and can affect the route of a lot of traffic. Multiprotocol Label Switching (MPLS) opens new possibilities to address the limitations of IP systems concerning traffic engineering thanks to explicit label-switched paths (LSPs). This paper proposes a new method based on simulated annealing meta-heuristic to compute a set of LSPs that optimise a given operational objective. The hybrid IGP/MPLS approach takes advantage of both IP and MPLS technologies and provides a flexible method to traffic engineer a network on a day to day basis. We illustrate the capabilities of our method with some simulations and a comparison with other techniques on an existing operational network. The results obtained by setting up a small number of LSPs are nearly optimal and better than by engineering the IGP weights. Moreover, although it could be combined with a static setting of the latter, SAMTE alone gives already the same results as this combination in much less CPU time, which thus allows an administrator to keep its initial and meaningful IGP metrics in his network. [less ▲]

Detailed reference viewed: 35 (7 ULg)
Full Text
Peer Reviewed
See detailDividing the Traffic Matrix to Approach Optimal Traffic Engineering
Balon, Simon ULg; Leduc, Guy ULg

in 14th IEEE International Conference on Networks (2006, September)

In this paper we propose a new method to approach optimal Traffic Engineering routing. The method consists of dividing the traffic matrix into $N$ sub-matrices, called strata, and route each of these ... [more ▼]

In this paper we propose a new method to approach optimal Traffic Engineering routing. The method consists of dividing the traffic matrix into $N$ sub-matrices, called strata, and route each of these independently. We propose two different implementations of our method in routers. Our method can also be used to compute a very precise approximation of the optimal value of a given objective function for comparison to heuristic Traffic Engineering algorithms. For this application, our algorithm is very efficient on large topologies compared to an LP formulation. [less ▲]

Detailed reference viewed: 29 (7 ULg)
Full Text
Peer Reviewed
See detailExperimental and simulation study of the Schottky barrier lowering by substrate doping variation for PtSi Source/Drain SBFETs
Lousberg, Grégory ULg; Yu, Hong-Yu; Froment, Benoit et al

in Proceedings of ESSDERC 2006 (2006, September)

In this paper, the authors study experimentally and numerically the Schottky barrier height (SBH) lowering of Pt silicide/n-Si diodes and its implications to Schottky-barrier (SB) source/drain p-FETs. The ... [more ▼]

In this paper, the authors study experimentally and numerically the Schottky barrier height (SBH) lowering of Pt silicide/n-Si diodes and its implications to Schottky-barrier (SB) source/drain p-FETs. The authors demonstrate that hole SBH can be lowered through an image-force mechanism by increasing the n-Si substrate doping, which leads to a substantial gain of the drive current in the long-channel bulk p-SBFETs. Numerical simulations show that the channel doping concentration is also critical for short-channel n- & p-SOI SBFETs performance [less ▲]

Detailed reference viewed: 30 (0 ULg)
Full Text
See detailL'herpétofaune des bords de route en Wallonie: analyse de 101 stations
Graitson, Eric ULg

in Naturalistes Belges (Les) (2006), 87(3), 73-80

Detailed reference viewed: 70 (5 ULg)
Full Text
Peer Reviewed
See detailLa participation, composante du développement durable : quatre études de cas
Mormont, Marc ULg; Mougenot, Catherine ULg; Dasnoy, Christine ULg

in VertigO : la Revue Electronique en Sciences de l'Environnement (2006), 7(2),

Based on various case studies, this paper analyses public participation as a circulation process : collective action circulates controversial questions between various cognitive and normative spheres ... [more ▼]

Based on various case studies, this paper analyses public participation as a circulation process : collective action circulates controversial questions between various cognitive and normative spheres (local / global, policy / science). These moves allow to reorganise knowledges and to reformulate norms. Its efficiency depends on its capacity to constitute new collectives of environmental management. This perspective calls on an experimentalist mode of public policy. [less ▲]

Detailed reference viewed: 132 (29 ULg)
Full Text
Peer Reviewed
See detailUn discours sur le champ, l'historiographie littéraire : le problème de l'efficace des pratiques discursives
Provenzano, François ULg

in COnTEXTES : Revue de Sociologie de la Littérature (2006), 1

Detailed reference viewed: 27 (3 ULg)
Full Text
Peer Reviewed
See detailLe rôle du lien social dans le parcours des SDF : enseignements pour une politique publique
Italiano, Patrick ULg; Deflandre, Dimitri; Jacquemain, Marc ULg

Conference (2006, September)

The theory of social capital according to Putnam insists on the fact that social relations are useful recourses in different situations of life. But it does not fit acuretaly the description of the ... [more ▼]

The theory of social capital according to Putnam insists on the fact that social relations are useful recourses in different situations of life. But it does not fit acuretaly the description of the situation of homeless people who are not necessarily deprived of a social network but who become more demanding in their social relationships. They want to give and receive and not only to use people as recourses. A Maussian theory of social link through gift is probably more relevant than social capital theory to describe those phenomena. [less ▲]

Detailed reference viewed: 103 (9 ULg)
Full Text
Peer Reviewed
See detailApproximate Policy Iteration for Closed-Loop Learning of Visual Tasks
Jodogne, Sébastien ULg; Briquet, Cyril ULg; Piater, Justus ULg

in Lecture Notes in Computer Science (2006, September), 4212

Approximate Policy Iteration (API) is a reinforcement learning paradigm that is able to solve high- dimensional, continuous control problems. We propose to exploit API for the closed-loop learning of ... [more ▼]

Approximate Policy Iteration (API) is a reinforcement learning paradigm that is able to solve high- dimensional, continuous control problems. We propose to exploit API for the closed-loop learning of mappings from images to actions. This approach requires a family of function approximators that maps visual percepts to a real-valued function. For this purpose, we use Regression Extra-Trees, a fast, yet accurate and versatile machine learning algorithm. The inputs of the Extra-Trees consist of a set of visual features that digest the informative patterns in the visual signal. We also show how to parallelize the Extra-Tree learning process to further reduce the computational expense, which is often essential in visual tasks. Experimental results on real-world images are given that indicate that the combination of API with Extra-Trees is a promising framework for the interactive learning of visual tasks. [less ▲]

Detailed reference viewed: 36 (14 ULg)
Full Text
Peer Reviewed
See detailEVALUER AUTREMENT LA CAPACITE D’ANALYSER SA PRATIQUE D’ENSEIGNANT AU SECONDAIRE SUPERIEUR SOUS L’ANGLE DE LA PSYCHOLOGIE EDUCATIONNELLE
Delcomminette, Séverine ULg; Leclercq, Dieudonné ULg; Sente, Isabelle

in Actes du 19ème colloque de l’Association pour le Développement des Méthodologies d'Evaluation en Education (2006, September)

Le cours de psychologie éducationnelle à l’agrégation dispensé au sein de l’Université de Liège s’adresse à des futurs enseignants du secondaire supérieur. En novembre 2006, nous avons renversé notre ... [more ▼]

Le cours de psychologie éducationnelle à l’agrégation dispensé au sein de l’Université de Liège s’adresse à des futurs enseignants du secondaire supérieur. En novembre 2006, nous avons renversé notre processus traditionnel d’évaluation certificative pratiqué depuis 20 ans. Au lieu d’inviter les étudiants à répondre à des questions à choix multiple (QCM) sur des cas créés par nous sur base de nos seules représentations personnelles de la vie en classe, nous leur avons demandé de fournir des exemples dans leur domaine (chimie, langues germaniques, sciences sanitaires, … ; 20 domaines au total). Ce renversement de la perspective est comparable au passage du thème (traduire vers la langue étrangère) à la version (traduire vers sa langue). Dans cet article nous analysons l’aspect docimologique, formatif ainsi que l’intérêt perçu par les étudiants et par les encadrants de cette nouvelle formule d’évaluation. [less ▲]

Detailed reference viewed: 164 (9 ULg)
Full Text
Peer Reviewed
See detailA novel extended-spectrum TEM-type beta-lactamase, TEM-138, from Salmonella enterica serovar Infantis.
chouchani, chedli; Berlemont, Renaud ULg; masmoudi, A. et al

in Antimicrobial Agents and Chemotherapy (2006), 50(9), 3183-5

A novel natural TEM beta-lactamase with extended-spectrum activity, TEM-138, was identified in a ceftazidime-resistant clinical isolate of Salmonella enterica serovar Infantis. Compared to TEM-1, TEM-138 ... [more ▼]

A novel natural TEM beta-lactamase with extended-spectrum activity, TEM-138, was identified in a ceftazidime-resistant clinical isolate of Salmonella enterica serovar Infantis. Compared to TEM-1, TEM-138 contains the following mutations: E104K, N175I, and G238S. The bla(TEM-138) gene was located on a 50-kb transferable plasmid. Expression studies with Escherichia coli revealed efficient ceftazidimase and cefotaximase activities for TEM-138. [less ▲]

Detailed reference viewed: 38 (2 ULg)
Full Text
Peer Reviewed
See detailDual analysis for finite element solutions of plate bending
Debongnie, Jean-François ULg; Nguyen-Xuan, Hung; Cung, N. H.

in Topping, B. H. V.; Montero, G.; Montenegro, R. (Eds.) Proceedings of the Eighth International Conference on Computational Structures Technology (2006, September)

This paper presents the application of the dual analysis concept to plate bending. In this method, a same problem is analyzed parallely by a displacement and an equilibrium model. The energetic distance ... [more ▼]

This paper presents the application of the dual analysis concept to plate bending. In this method, a same problem is analyzed parallely by a displacement and an equilibrium model. The energetic distance between these two models is the sum of both global errors and consequently, an upper bound of each of them. After an exposition of the two models, numerical examples are presented, which illustrate the high obtainable accuracy of the method. [less ▲]

Detailed reference viewed: 56 (9 ULg)