Autonomous rigid body attitude synchronizationSarlette, Alain ; Sepulchre, Rodolphe ; in Proceedings of the 46th IEEE Conference on Decision and Control (2007, December) This paper studies some extensions to the decentralized attitude synchronization of identical rigid bodies. Considering fully actuated Euler equations, the communication links between the rigid bodies are ... [more ▼] This paper studies some extensions to the decentralized attitude synchronization of identical rigid bodies. Considering fully actuated Euler equations, the communication links between the rigid bodies are limited and the available information is restricted to relative orientations and angular velocities. In particular, no leader nor external reference dictates the swarm's behavior. The control laws are derived using two classical approaches of nonlinear control - tracking and energy shaping. This leads to a comparison of two corresponding methods which are currently considered for distributed synchronization - consensus and stabilization of mechanical systems with symmetries. [less ▲] Detailed reference viewed: 35 (9 ULg) Ion Beam Induced Luminescence & Cultural HeritageCalvo Del Castillo, Helena ![]() Scientific conference (2007, December) Detailed reference viewed: 1 (0 ULg) La circonscription fédérale : un placebo administré à un malade incurable?Bouhon, Frédéric ![]() E-print/Working paper (2007) Detailed reference viewed: 13 (4 ULg) Le financement public des cultes et de la laïcitéHusson, Jean-François ![]() in Politique : Revue de Débats (2007), (52), 14-17 This article summarizes the public financing of religious and philosophical communities in Belgium. It discusses the way theses means are shared and the future of this model. Detailed reference viewed: 14 (2 ULg) Intussen aan de kersttafel...Ozer, Pierre ; Perrin, Dominique ![]() Article for general public (2007) De afgelopen weken heb ik de reclamefolders van mijn dichtstbijzijnde hypermarkt uitgeplozen om een fijn dineetje samen te stellen. Hierna volgt het resultaat voor acht personen, met tussen haakjes het ... [more ▼] De afgelopen weken heb ik de reclamefolders van mijn dichtstbijzijnde hypermarkt uitgeplozen om een fijn dineetje samen te stellen. Hierna volgt het resultaat voor acht personen, met tussen haakjes het aantal kilometers dat elk ingrediënt heeft afgelegd om naar België te komen en de hoeveelheid CO2 in kilogram die het transport geproduceerd heeft. Ik heb vooral ingrediënten gekozen die met het vliegtuig worden aangevoerd, want luchttransport produceert gemiddeld zestig keer meer CO2 dan vervoer over zee. [less ▲] Detailed reference viewed: 62 (3 ULg) Modalités alternatives d'utilisation de graines de lin comme sources d'acides gras n-3 en production de viande bovine.Robaye, Vincent ; Istasse, Louis ; Dufrasne, Isabelle ![]() Report (2007) Detailed reference viewed: 6 (2 ULg) Noël en famille ou 15 litres de pétroleOzer, Pierre ; Perrin, Dominique ![]() Article for general public (2007) La semaine précédant Noël, j’ai décortiqué les publicités de mon hypermarché le plus proche pour préparer le repas familial tant attendu. Et voici ce que j’ai pu concocter pour huit personnes avec, entre ... [more ▼] La semaine précédant Noël, j’ai décortiqué les publicités de mon hypermarché le plus proche pour préparer le repas familial tant attendu. Et voici ce que j’ai pu concocter pour huit personnes avec, entre parenthèses, les kilomètres parcourus entre le pays de production et la Belgique ainsi que les kilogrammes de CO2 émis uniquement pour le transport aérien intercontinental de ces produits achetés. L’analyse se focalise sur le transport par voie aérienne puisque celui-ci émet, en moyenne, 60 fois plus de CO2 que le transport par voie maritime. [less ▲] Detailed reference viewed: 34 (13 ULg) Implementation and Preliminary Evaluation of an ISP-Driven Informed Path Selection; Donnet, Benoît ; in ACM CoNEXT conference (2007, December) Detailed reference viewed: 4 (1 ULg) Effets des mesures de gestion sur la fertilité des sols forestiers et le cycle de l'eau. Rapport intermédiaire, décembre 2007Guillaume, Patricia ; Carnol, Monique ; Requier, Marie-Christine et alReport (2007) Detailed reference viewed: 11 (3 ULg) On the Construction of WiMAX Mesh Tree; ; Donnet, Benoît et alin IEEE Communications Letters (2007), 11(12), The IEEE 802.16 protocol, also known as WiMAX, has been designed to support long-range communications with high bitrates, using two operation modes: Point-to-Multi-Point (PMP) and Mesh. In the mesh mode ... [more ▼] The IEEE 802.16 protocol, also known as WiMAX, has been designed to support long-range communications with high bitrates, using two operation modes: Point-to-Multi-Point (PMP) and Mesh. In the mesh mode, Subscriber Stations (SSs) can directly communicate with each other, thus forming a tree, and can be used to forward other's data packets in a multi-hop fashion. On the contrary, in the PMP mode only one hop communication toward the Base Station (BS) is allowed. In this paper, we investigate the performance of the mesh mode by proposing an algorithm for constructing the WiMAX mesh tree. Our algorithm increases routes' effective throughput by splitting long links into multiple shorter ones. We show through simulations that this approach leads to improving the throughput capacity of WiMAX-based wireless mesh networks. [less ▲] Detailed reference viewed: 3 (0 ULg) Endometrial vessel maturation in women exposed to levonorgestrel-releasing intrauterine system for a short or prolonged period of timeRavet, Stéphanie ; Labied, Soraya ; Blacher, Silvia et alin Human Reproduction (2007), 22(12), 3084-3091 BACKGROUND: Levonorgestrel-releasing intrauterine system (LNG-IUS), although inserted to reduce heavy menstruation, causes irregular early transient bleeding. The objective of the study was to document ... [more ▼] BACKGROUND: Levonorgestrel-releasing intrauterine system (LNG-IUS), although inserted to reduce heavy menstruation, causes irregular early transient bleeding. The objective of the study was to document quantitative changes in endometrial vessels of short- (< or =3 months) and long-term (> or =12 months) LNG users. The area, density and maturation of endometrial vessels were quantified in 19 endometrial biopsies of women with LNG-IUS and in 10 normally ovulating patients during mid-luteal phase. METHODS: Vessel maturation was evaluated by double immunostaining using anti-von Willebrand factor (endothelial cell marker) and anti-alpha Smooth Muscle Actin (vascular smooth muscle cells) antibodies. Vessel area, number and density were quantified with a novel computer-assisted image analysis system. RESULTS: Endometrium exposed to LNG-IUS for 1-3 months displayed a 11.5-fold increase in small naked vessel number. The partially mature vessel (alphaSMA partially positive) number increased six times. After long-term LNG-IUS treatment, the immature and partially mature vessel number remained four times higher than in the control group. Vessel area and density also increased dramatically in a time-dependent pattern with LNG-IUS use. CONCLUSIONS: Levonorgestrel affects blood vessel number, area, density and maturation in a time-dependent pattern that may explain the early transient increase in breakthrough bleeding with the LNG-IUS. [less ▲] Detailed reference viewed: 43 (4 ULg) Le réveil de l’immatériel. La production onirique du patrimoine des Indiens Zápara (Haute Amazonie)Bilhaut, Anne-Gaël ![]() Doctoral thesis (2007) The Zapara Indians in the Upper Amazon are on the verge of disappearing from the linguistic map. This is a fact. And yet, their emergence within the political landscape in Ecuador (but not yet in Peru ... [more ▼] The Zapara Indians in the Upper Amazon are on the verge of disappearing from the linguistic map. This is a fact. And yet, their emergence within the political landscape in Ecuador (but not yet in Peru), has provided them with a greater international visibility as an indigenous group. Most unusually, the accounts of dreams become one of the key elements of new forms of identity practices and identification processes – as those narrated here by two Zapara political leaders will attest. In search of their material and immaterial heritage, these leaders make use of the realm of dreams, using occurred dreams to orient their choices in the reconstruction of a collective memory. The dream, as a tool for engaging in a regredient process or in the return into the past, provides the historical elements that the Indians will then re-inject into their present in order to construct new “traditions”. In this dissertation, I will be describing the mechanisms, the learning of, and the local theories concerning the experience of dreams. In order to be understood, the dream must first circulate, and must have an issuer as a point of departure. Dreaming is also the means for a privileged relationship between human and non- human beings. Throughout this thesis, various systems of memory will be examined based upon empirical data revealing of the dreamt experience, but also of daily life, such as new teaching methods, or the creation of artefacts, produced both by ancestors or contemporaries. These accounts will help us to understand this new process of “Zaparaisation”, which depends as much on a process of ethno-archiving than on ethno-museography, and which awakens the immaterial. [less ▲] Detailed reference viewed: 33 (1 ULg) L'image du mois. Un syndrome d' AshermanDesirotte, Gaëlle ; Foidart, Jean-Michel ; Nisolle, Michelle ![]() in Revue Médicale de Liège (2007), 62(12), 697-8 Detailed reference viewed: 182 (4 ULg) Des villes qui marchentFrankignoulle, Pierre ![]() Report (2007) Etat de l'art + bibliographie sur le thème de la marche en ville Detailed reference viewed: 16 (2 ULg) Alternative methodologies for the evaluation of the EMC-Behaviour of large machines; ; et al in Revue E tijdschrift (2007), (4), 16-28 On the legal aspect, the new European Directive on ElectroMagnetic Compatibility 2004/108/EC concerns also large machines. The conformity assessment procedure in that case should be clarified and which ... [more ▼] On the legal aspect, the new European Directive on ElectroMagnetic Compatibility 2004/108/EC concerns also large machines. The conformity assessment procedure in that case should be clarified and which standards should be applied and how. On a technical point of view, the special situation to characterise the EMC behaviour of large machines implies that current procedures are complex and very expensive, and in some cases even not possible. Adapted measuring methodologies and procedures are needed. As a response to this situation and within the European R&D Frameworks, the TEMCA2 project aimed to develop new and adapted methodologies for the assessment of EMC related to this type of industrial large machinery. The present paper describes the legal aspect for large machines and shows the objectives and the results of the European TEMCA2 project. [less ▲] Detailed reference viewed: 43 (1 ULg) Découverte d'une statuette/récipient rubanée à Alleur (Hesbaye liégeoise, Belgique)Delye, Emmanuel ; Otte, Marcel ![]() in Archaeologia Mosellana (2007, December), 7 Une statuette modelée, réduite par cassure à la base d'un torse, humain ou animal, fut découverte à Alleur (Liège, Belgique) dans un contexte Rubané (fin VIe millénaire avant J.-C.). Les comparaisons de ... [more ▼] Une statuette modelée, réduite par cassure à la base d'un torse, humain ou animal, fut découverte à Alleur (Liège, Belgique) dans un contexte Rubané (fin VIe millénaire avant J.-C.). Les comparaisons de cet objet rituel portent vers l'Europe centrale (Allemagne, Hongrie). [less ▲] Detailed reference viewed: 56 (7 ULg) Directive Cadre Eau: Mise en oeuvre du contrôle de surveillance - résultats de la campagne 2006 - district Corse; ; et al Report (2007) Les programmes de surveillance liés à la mise en oeuvre de la DCE sont coordonnés par le Ministère de l’Ecologie et de l’Aménagement durable (MEDAD) et dans chaque bassin hydrographique ce sont les ... [more ▼] Les programmes de surveillance liés à la mise en oeuvre de la DCE sont coordonnés par le Ministère de l’Ecologie et de l’Aménagement durable (MEDAD) et dans chaque bassin hydrographique ce sont les Agences de l’eau qui, avec l’Etat, prennent en charge l’application, la mise en oeuvre de ces réseaux. Sur la façade méditerranéenne, Ifremer a assuré pour le compte du Schéma Directeur des Données sur l’Eau la maîtrise d’ouvrage de la première campagne du contrôle de surveillance, en coordonnant l’ensemble de l’acquisition des données et de leur synthèse en collaboration avec de nombreux partenaires : Universités, bureaux d’études, structures locales de gestion et services de l’Etat. La mobilisation des différents acteurs autour d’un objectif commun a permis de faire face à la pluridisciplinarité et à la complexité des aspects logistiques de ce programme. Les résultats de cette première campagne du contrôle de surveillance (2006) permettent d’ores et déjà d’avoir une bonne vision d’ensemble de la qualité des eaux littorales à l’échelle du district. Ils confortent les évaluations faites « à dire d’expert » lors de l’état des lieux du district avec des informations nouvelles concernant plus particulièrement la biologie, notamment le benthos de substrat meuble. En eaux côtières, les eaux sont de bonne qualité. En eau de transition, essentiellement lagunaires, il existe une plus grande hétérogénéité des résultats avec des paramètres déclassant relevant plutôt de la biologie, mais sur un nombre important d’indicateurs. [less ▲] Detailed reference viewed: 119 (19 ULg) Numerical and analytical investigations on iron columns reinforced by FRP under axial compressionLy, Dong Phuong Lam ; Rondal, Jacques ; Jaspart, Jean-Pierre ![]() in Smith, S. T. (Ed.) Asia-Pacific Conference on FRP in Structures-APFIS07 (2007, December) This paper presents numerical and analytical investigations on iron columns under axial compression, strengthened with high modulus carbon fibre reinforced polymer (FRP) sheets. Numerical and analytical ... [more ▼] This paper presents numerical and analytical investigations on iron columns under axial compression, strengthened with high modulus carbon fibre reinforced polymer (FRP) sheets. Numerical and analytical models are proposed to predict the resistance and stability load of such elements, including effects of section and member geometrical imperfections and of the nonlinear characteristic and the anisotropy in post elasticity of iron material. It is shown that axial resistance and stiffness of iron columns can be increased significantly with the use of longitudinal FRP sheets as a result of the reduction of the column slenderness, but also that transverse FRP sheets should also be used to avoid any local buckling of the longitudinal FRP sheets during loading. [less ▲] Detailed reference viewed: 36 (3 ULg) Rapport 4 projet FIRST DEI IMOBIOSEGoffin, Dorothée ![]() Report (2007) Le projet FIRST DEI IMOBIOSE est financé par la région wallonne et en partenariat avec la société Meurens Natural. Ce projet a pour but de produire des sirops d’isomaltooligosaccharides prébiotiques à ... [more ▼] Le projet FIRST DEI IMOBIOSE est financé par la région wallonne et en partenariat avec la société Meurens Natural. Ce projet a pour but de produire des sirops d’isomaltooligosaccharides prébiotiques à partir de sirops de céréales et ce dans le respect du cahier des charges biologique, mais également de les caractériser d’un point de vue de leur composition et de leurs effets sur la santé. [less ▲] Detailed reference viewed: 4 (0 ULg) Ocena skutecznosci napraw – wplyw jakosci podkladu betonowego; Courard, Luc ; in Inzynieria i Budownictwo (Engineering and Building Industry) (2007), 12 Detailed reference viewed: 11 (0 ULg) |
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