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See detailImplementing Network Virtualization for a Future Internet
Papadimitriou, Panagiotis; Maennel, Olaf; Greenhalgh, Adam et al

in 20th ITC Specialist Seminar on Network Virtualization Proceedings (2009, May)

The Internet has become an essential communication medium upon which billions of people rely every day. However, necessary evolution of the Internet has been severely limited by reliability constrains and ... [more ▼]

The Internet has become an essential communication medium upon which billions of people rely every day. However, necessary evolution of the Internet has been severely limited by reliability constrains and social-economic factors. Experts fear that current growth rates will threaten the future of the Internet as a whole, despite the fact that new core technologies already exist. Network virtualization presents a promising approach to overcome ossification and facilitate service deployment for a future Internet. Exploring this approach, we present a prototype implementation which realizes a subset of the 4WARD virtual network (VNet) architecture, allowing multiple VNets to coexist on top of a shared physical infrastructure. We discuss the functionality of our prototype and demonstrate experimental results to assess its performance. [less ▲]

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See detailLittérature et don
Glinoer, Anthony; Dozo, Björn-Olav ULg

in COnTEXTES : Revue de Sociologie de la Littérature (2009), 5

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See detailBidding and managing congestion across multiple electricity spot markets
Marinakis, Adamantios ULg; Bakirtzis, Anastasios; Van Cutsem, Thierry ULg

in Proc. 6th Intern. Conference on the European Energy Market (2009, May)

The possibility for market participants to place their bids in markets where they are not geographically located is investigated in this paper. A framework for managing the resulting congestion is ... [more ▼]

The possibility for market participants to place their bids in markets where they are not geographically located is investigated in this paper. A framework for managing the resulting congestion is proposed. The procedure is illustrated and commented on a test system. [less ▲]

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See detailAnisotropic continuum damage model coupled to viscoplasticity for a pressure dependent alveolar bone remodeling law
Mengoni, Marlène ULg; Ponthot, Jean-Philippe ULg

in National Congress on Theoretical and Applied Mechanics (2009, May)

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See detailDeveloppement et utilisation de modèles de simulation pour l'audit et la rénovation des bâtiments conditionnés
Bertagnolio, Stéphane ULg; Lebrun, Jean ULg; Andre, Philippe ULg

(2009, May)

Une suite d’outils de simulation de bâtiment et de système de climatisation destinés à assister l’audit et la rénovation des bâtiments commerciaux est actuellement en développement. Les outils en question ... [more ▼]

Une suite d’outils de simulation de bâtiment et de système de climatisation destinés à assister l’audit et la rénovation des bâtiments commerciaux est actuellement en développement. Les outils en question sont développés de façon à limiter le nombre de paramètres demandés à l’utilisateur et à garder une transparence totale pour ce dernier. Dans un premier temps, le développement des modèles et leur implémentation dans un solveur d’équations sont discutés. L’identification des paramètres des modèles développés est ensuite discutée et illustrée par un exemple d’application. [less ▲]

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See detailPortrait : The Canton Spirituals
Sacré, Robert ULg

Article for general public (2009)

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See detailGroup B streptococcal Screening, Diagnosis and Clinically Relevant Resistance
Melin, Pierrette ULg

in DEVANI Training (Ed.) European Workshop Current Insights into Group B Streptococcal Diseases (2009, May)

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See detailNon-thermal processes in colliding-wind massive binaries: the contribution of Simbol-X to a multiwavelength investigation
De Becker, Michaël ULg; Blomme, Ronny; Micela, Giusi et al

in AIP Conference Proceedings (2009, May), 1126

Several colliding-wind massive binaries are known to be non-thermal emitters in the radio domain. This constitutes strong evidence for the fact that an efficient particle acceleration process is at work ... [more ▼]

Several colliding-wind massive binaries are known to be non-thermal emitters in the radio domain. This constitutes strong evidence for the fact that an efficient particle acceleration process is at work in these objects. The acceleration mechanism is most probably the Diffusive Shock Acceleration (DSA) process in the presence of strong hydrodynamic shocks due to the colliding-winds. In order to investigate the physics of this particle acceleration, we initiated a multiwavelength campaign covering a large part of the electromagnetic spectrum. In this context, the detailed study of the hard X-ray emission from these sources in the SIMBOL-X bandpass constitutes a crucial element in order to probe this still poorly known topic of astrophysics. It should be noted that colliding-wind massive binaries should be considered as very valuable targets for the investigation of particle acceleration in a similar way as supernova remnants, but in a different region of the parameter space. [less ▲]

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See detailDTS: a Decentralized Tracing System
Masui, Kenji; Donnet, Benoît ULg

in First International Workshop on Traffic Monitoring and Analysis (2009, May)

A new generation of widely distributed systems to measure the Internet topology at the interface level is currently being deployed. Cooperation between monitors in these systems is required in order to ... [more ▼]

A new generation of widely distributed systems to measure the Internet topology at the interface level is currently being deployed. Cooperation between monitors in these systems is required in order to avoid over-consumption of network resources. This paper proposes an architecture for a distributed topology measurement (DTM) system that, for the first time, decentralizes probing information. The key idea of our proposal is that, by utilizing a shared database as a communication method among monitors and taking advantage of the characteristics of the Doubletree algorithm, we can get rid of a specific control point, and a DTM system can be constructed in a decentralized manner. In this paper, we describe our implementation of a DTM, called Decentralized Tracing System (DTS). Decentralization within DTS is achieved using various distributed hash tables (DHTs), each one being dedicated to a particular plane (i.e., control or data). We also provide preliminary evaluation results. [less ▲]

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See detailQu'est-ce qui fonde le destin d'un homme?: Jean Mélon,Prix SZONDI 2008
Stassart, Martine ULg

in Szondiana (2009), 29(1(Spring)), 59-70

Le destin scientifique de Jean Mélon, principal disciple, avec Jacques SCHOTTE, de Léopold SZONDI (1893-1986) et continuateur de son oeuvre.

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See detailLeadership et genre : regard croisé de la gestion et de la psychanalyse
Cornet, Annie ULg; Cadalen, Sophie

Scientific conference (2009, May)

La féminisation croissante des différents niveaux du management et l’augmentation du nombre de femmes occupant d e s p o s t e s à responsabilité ont s u s c i t é différentes recherches comparatives sur ... [more ▼]

La féminisation croissante des différents niveaux du management et l’augmentation du nombre de femmes occupant d e s p o s t e s à responsabilité ont s u s c i t é différentes recherches comparatives sur les styles de leadership mobilisés par les hommes et les femmes. Malgré les nombreuses études réalisées sur le sujet, on est très loin du consensus d’une part, sur l’existence ou non de différences dans le leadership féminin et masculin et d’autre part, sur les explications formulées pour avancer ces résultats. [less ▲]

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See detailOn the Impact of Clustering on Measurement Reduction
Saucez, Damien; Donnet, Benoît ULg; Bonaventure, Olivier

in 8th International IFIP-TC 6 Networking Conference (2009, May)

Measuring a path performance according to one or several metrics, such as delay or bandwidth, is becoming more and more pop- ular for applications. However, constantly probing the network is not suitable ... [more ▼]

Measuring a path performance according to one or several metrics, such as delay or bandwidth, is becoming more and more pop- ular for applications. However, constantly probing the network is not suitable. To make measurements more scalable, the notion of clustering has emerged. In this paper, we demonstrate that clustering can limit the measurement overhead in such a context without loosing too much accuracy. We first explain that measurement reduction can be observed when vantage points collaborate and use clustering to estimate path performance. We then show, with real traces, how effective is the overhead reduction and what is the impact in term of measurement accuracy. [less ▲]

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See detailIncentives for BGP Guided IP-Level Topology Discovery
Donnet, Benoît ULg

in First International Workshop on Traffic Monitoring and Analysis (2009, May)

Internet topology discovery has been an attractive research field during the past decade. In particular, the research community was interested in modeling the network as well as providing efficient tools ... [more ▼]

Internet topology discovery has been an attractive research field during the past decade. In particular, the research community was interested in modeling the network as well as providing efficient tools, mostly based on traceroute, for collecting data. In this paper, we follow this track of rendering traceroute-based exploration more efficient. We discuss incentives for coupling passive monitoring and active measurements. In particular, we show that high-level information, such as BGP updates, might be used to trigger targeted traceroutes. As a result, the network dynamics might be better capture. We also provide a freely available tool for listening to BGP feeds and triggering dedicated traceroutes. [less ▲]

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See detailPortrait d'auteur : Pascal Durand, le pouvoir des mots, les mots du pouvoir…
Durand, Pascal ULg; Sloover, Jean

Article for general public (2009)

Entretien, en forme d'autoportrait scientifique, avec le journaliste Jean Sloover.

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See detailOutils de contrôle de gestion et performance des collectivités locales : un état de la littérature
Togodo Azon, Degodo Aimé ULg; Van Caillie, Didier ULg

in Association Francophone de Comptabilbilité (Ed.) Actes du 30ème Congrès de l'Association Francophone de Comptabilité (2009, May)

Our communication is essentially a state of the literature that aims (1) to present the different aspects of the concept of the performance of the local collectivities (2) to sketch the different tools of ... [more ▼]

Our communication is essentially a state of the literature that aims (1) to present the different aspects of the concept of the performance of the local collectivities (2) to sketch the different tools of performance used in the local collectivities and (3) to see to what finalities and missions they answer. This state of the literature allowed us to note that all indicators of performance and all tools of piloting of the performance in force in the classic organizations can also be adapted to the local collectivities. He/it is evident from the literature that at all times the budget is the tool the more used. Of other modern tools as the benchmarking, the control panel and the balanced scorecard are more and more in vogue in the local collectivities. These different tools are used in three finalities: ethical, economic and political. [less ▲]

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