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See detailY'a plus d'poissons... Y'a plus d'reptiles
Hindryckx, Marie-Noëlle ULg

in TRACeS de ChanGements (2009), 193

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See detailBovine leukemia virus can be classified into seven genotypes: evidence for the existence of two novel clades.
Rodriguez, Sabrina ULg; Golemba, Marcelo D.; Campos, Rodolfo H. et al

in Journal of General Virology (The) (2009), 90(Pt 11), 2788-97

Previous studies have classified the env sequences of bovine leukemia virus (BLV) provirus from different locations worldwide into between two and four genetic groupings. These different studies gave ... [more ▼]

Previous studies have classified the env sequences of bovine leukemia virus (BLV) provirus from different locations worldwide into between two and four genetic groupings. These different studies gave unique names to the identified groups and no study has yet integrated all the available sequences. Thus, we hypothesized that many of the different groups previously identified actually correspond to a limited group of genotypes that are unevenly distributed worldwide. To examine this hypothesis, we sequenced the env gene from 28 BLV field strains and compared these sequences to 46 env sequences that represent all the genetic groupings already identified. By using phylogenetic analyses, we recovered six clades, or genotypes, that we have called genotypes 1, 2, 3, 4, 5 and 6. Genotypes 1-5 have counterparts among the sequence groupings identified previously. One env sequence did not cluster with any of the others and was highly divergent when compared with the six genotypes identified here. Thus, an extra genotype, which we named 7, may exist. Similarity comparisons were highly congruent with phylogenetic analyses. Furthermore, our analyses confirmed the existence of geographical clusters. [less ▲]

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See detailLes relations "spatiales" entre géomatique et géographie
Billen, Roland ULg

in Bulletin de la Société Géographique de Liège (2009), (52), 45-47

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See detailA way to improve management of underground utilities
Sainovic, Ivana ULg; Billen, Roland ULg

in De Mayer, Philippe; Neutens, Tijs; De Ryck, Marijke (Eds.) Proceedings of the 4th International Workshop on 3D Geo-Information (2009, November)

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See detailA Geocodification for 3D objects terrestrial surveys
Kasprzyk, Jean-Paul ULg; Billen, Roland ULg

in Neutens, Tijs; De Ryck, Marijke; De Maeyer, Philippe (Eds.) Proceedings of the 4th International Workshop on 3D Geo-information (2009, November)

Nowadays, mean 3D data aquisition techniques are photogrammetry and laserscanning. Their advantage is the huge amount of points that can be measured in a very short time on the field. Nevertheless, the ... [more ▼]

Nowadays, mean 3D data aquisition techniques are photogrammetry and laserscanning. Their advantage is the huge amount of points that can be measured in a very short time on the field. Nevertheless, the post-processing associated to these techniques allowing to build a real 3D model from the clouds of points is very long. Therefore, we developed a geocodification ("field to finish") for the 3D data acquisition at a low and/or middle level of details. Despite each point is measured one by one with a total station, the user can gain a lot of time because of the almost-absence of post processing. This paper shows some of the developed techniques and tries to demonstrate the possible complementarity between geocodification, laserscanning and photogrammtry. [less ▲]

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See detailLe médecin en promotion de la santé à l'école - Actes des ateliers
Vandoorne, Chantal ULg; Melen, Geoffroy ULg; Saglimbene, Concetta ULg et al

Scientific conference (2009, November)

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See detailL'importance des coopératives dans le commerce équitable
Huybrechts, Benjamin ULg

Report (2009)

Dans cette huitième e-note, Benjamin Huybrechts (Centre d’Economie Sociale, HEC Management School, Université de Liège) analyse la relation entre le commerce équitable et l’entrepreneuriat coopératif. Il ... [more ▼]

Dans cette huitième e-note, Benjamin Huybrechts (Centre d’Economie Sociale, HEC Management School, Université de Liège) analyse la relation entre le commerce équitable et l’entrepreneuriat coopératif. Il en conclut que le modèle du commerce équitable a tout à gagner à tenter d’appliquer les principes d’équité, de justice et de démocratie qu’il promeut également à l’interne des organisations, tant au Sud qu’au Nord. A l’inverse, le mouvement coopératif a tout à gagner à s’appuyer sur le commerce équitable pour donner un nouveau souffle à ses principes et à ses acteurs dans un contexte de dialogue Nord-Sud. [less ▲]

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See detailMulti-armed bandit based policies for cognitive radio's decision making issues
Jouini, Wassim; Ernst, Damien ULg; Moy, Christophe et al

in Proceedings of the 3rd International Conference on Signals, Circuits and Systems (SCS) (2009, November)

We suggest in this paper that many problems related to Cognitive Radio’s (CR) decision making inside CR equipments can be formalized as Multi-Armed Bandit problems and that solving such problems by using ... [more ▼]

We suggest in this paper that many problems related to Cognitive Radio’s (CR) decision making inside CR equipments can be formalized as Multi-Armed Bandit problems and that solving such problems by using Upper Confidence Bound (UCB) algorithms can lead to high-performance CR devices. An application of these algorithms to an academic Cognitive Radio problem is reported. [less ▲]

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See detailL'architecture et la sculpture gothiques. Des clefs pour comprendre
Van den Bossche, Benoît ULg

in Staquet, Anne (Ed.) Au temps des cathédrales... (2009)

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See detailBuitenlands familial statuut en vreemdelingenrecht: het ipr in het verdomhoekje?
Wautelet, Patrick ULg

Conference (2009, November)

This presentation attempts to uncover the influence of migration policy and law on the processes of private international law dealing with cross-border family relationships, using examples from Belgian ... [more ▼]

This presentation attempts to uncover the influence of migration policy and law on the processes of private international law dealing with cross-border family relationships, using examples from Belgian and Dutch practice. [less ▲]

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See detailFully coupled simulation of mechatronic and flexible multibody systems: An extended finite element approach
Bruls, Olivier ULg

Scientific conference (2009, November)

In this talk, I will discuss some extensions and refinements of classical finite element tools for the numerical simulation of complex mechatronic systems. The presentation will be divided into three main ... [more ▼]

In this talk, I will discuss some extensions and refinements of classical finite element tools for the numerical simulation of complex mechatronic systems. The presentation will be divided into three main parts. In the first part, I will show how this approach allows the modeling of dynamic systems with large amplitude motions composed of rigid bodies, flexible bodies, kinematic joints, actuators, sensors and control units. A fully coupled model of a semi-active suspension will be used to illustrate the methodology. The second part will focus on some numerical aspects concerning the time integration of the equations of motion which have the structure of strongly coupled differential-algebraic equations on a Lie group. The treatment of large rotation variables and of the coupling between control state variables and mechanical generalized coordinates will be discussed in more detail. In the third part, the simulation tool will be exploited for the topology optimization of structural components embedded in multibody systems. Generally, topology optimization techniques use simplified quasi-static load cases to mimic the complex dynamic loadings in service. In contrast, I will present an optimization procedure which properly accounts for the actual dynamic interactions which occur during the motion of the flexible multibody system. In order to illustrate the benefits of this integrated design approach, the optimization of a two degrees-of-freedom robot arm with flexible truss linkages will be analyzed. [less ▲]

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See detailSharing one's death : Le Tombeau de Théophile Gautier (1873)
Durand, Pascal ULg

in Whidden Seth (Ed.) Models of Collaboration in Nineteenth-Century French Literature : Several Authors, One Pen (2009)

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See detailVers une taxonomie des profils d'entrée dans un processus de défaillance : un focus sur les micros et petites entreprises en difficulté
Crutzen, Nathalie ULg; Van Caillie, Didier ULg

in Revue Internationale P.M.E. (2009), 22(1), 103-128

Previous literature on business failure demonstrates the failure process varies from one failing firm to another. In particular, Argenti (1976) and Laitinen (1991) argue all firms do not enter in a ... [more ▼]

Previous literature on business failure demonstrates the failure process varies from one failing firm to another. In particular, Argenti (1976) and Laitinen (1991) argue all firms do not enter in a failure process for the same reasons. Nevertheless, despite this theoretical affirmation, few researches propose a taxonomy (or a typology)1 that differentiates several typical “entry doors” in a failure process. Moreover, none of them really focuses on micro and small firms while the literature argues their failure is specific and very common (Julien, 2005). Considering these gaps in the literature and on the basis of an inductive and qualitative analysis, this article proposes an original contribution. Focused on micro and small distressed firms, it presents a taxonomy that highlights seven specific “entry doors” in a failure process. [less ▲]

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See detailFirst example of “click” copper(I) catalyzed azide-alkyne cycloaddition in supercritical carbon dioxide: Application to the functionalization of aliphatic polyesters
Grignard, Bruno ULg; Schmeits, Stephanie ULg; Riva, Raphaël ULg et al

in Green Chemistry (2009), 11

The modification of aliphatic polyesters by the copper(I) catalyzed azide-alkyne cycloaddition (CuAAC) was successfully implemented in supercritical carbon dioxide (scCO2). Due to the remarkable ... [more ▼]

The modification of aliphatic polyesters by the copper(I) catalyzed azide-alkyne cycloaddition (CuAAC) was successfully implemented in supercritical carbon dioxide (scCO2). Due to the remarkable properties of scCO2, the CuAAC reaction turned out to be quantitative even though the aliphatic polyesters used in this work were insoluble in scCO2. Interestingly enough, the conditions were mild enough to prevent polymer degradation from occurring and finally, efficient removal of the catalyst (>96%) was achieved by scCO2 extraction. [less ▲]

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See detailMicrofluidic on a wire
Terwagne, Denis ULg; Vandewalle, Nicolas ULg; Gilet, Tristan ULg

Poster (2009, November)

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See detailQuantifying ASes Multiconnectivity Using Multicast Information
Mérindol, Pascal; Van den Schriek, Virginie; Donnet, Benoît ULg et al

in 9th ACM SIGCOMM Conference on Internet Measurement (2009, November)

Redundant connectivity (or multiconnectivity) between adjacent autonomous systems (ASes) is important for inter-domain traffic engineering and fast recovery in case of failures. However, the redundancy of ... [more ▼]

Redundant connectivity (or multiconnectivity) between adjacent autonomous systems (ASes) is important for inter-domain traffic engineering and fast recovery in case of failures. However, the redundancy of ASes business relationship links has not been quantitatively studied, mainly due to the difficulty of obtaining relevant data. In this paper, we show that the mrinfo multicast monitoring tool can provide useful data about the Internet topology and such redundant links in particular. Our analysis relies on more than four years of daily queries to about ten thousand routers mapped into more than two hundred ASes. We demonstrate that peering links between ASes are frequently redundant. In particular, our analysis shows that more than half of the studied ASes pairs are connected through multiple physical links. We then refine our analysis by considering the different types of ASes and their business relationships. A particular result of our analysis is that at least 75% of the peer-to-peer relationships between adjacent Tier-1 ASes are redundant, i.e., the con- nections between these ASes involve several physical links. Our analysis is conservative, providing so a lower bound, as some links might not be seen by mrinfo due to ISPs filtering policies. [less ▲]

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See detailLa promotion de la santé en Communauté française, une variabilité de pratiques en regard d'un même décret
Absil, Gaëtan ULg; Caillet, Sarah

in Education santé (2009), (250), 8-9

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See detailChoisir son assiette pour que tout le monde soit à la fête
Ozer, Pierre ULg

Article for general public (2009)

En décembre, les chefs d’Etats se réunissent à Copenhague pour tenter de lutter contre le réchauffement climatique. Et en décembre, nous préparons de copieux repas pour les fêtes de fin d’année. Cela peut ... [more ▼]

En décembre, les chefs d’Etats se réunissent à Copenhague pour tenter de lutter contre le réchauffement climatique. Et en décembre, nous préparons de copieux repas pour les fêtes de fin d’année. Cela peut être l’occasion d’aider, à notre échelle, à préserver la planète. [less ▲]

Detailed reference viewed: 78 (10 ULg)