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See detailExtending Routers Utilisability and Life Cycle through Automated Configuration Management
Rodriguez, Francisco; Hoerdt, Mickael; Mathy, Laurent ULg

in IPOM '09 Proceedings (2009, October)

We present the design of a distributed router platform aimed at consolidating multiple hardware routers. The goal of the approach is twofold: firstly decouple the logical routing and forwarding ... [more ▼]

We present the design of a distributed router platform aimed at consolidating multiple hardware routers. The goal of the approach is twofold: firstly decouple the logical routing and forwarding functionality from the limitations of the hardware that runs it, through automated configuration management only; and secondly, give component routers a longer lease of life, as constituting parts of a larger router system. We focus on the logical intra-domain routing function provided by routers, and show the need for a centralized intra-domain route server. [less ▲]

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See detailExtending the classification of bacterial transcription factors beyond the helix-turn-helix motif as an alternative approach to discover new cis/trans relationships
Rigali, Sébastien ULg; Schlicht, M.; Hoskisson, P. et al

in Nucleic Acids Research (2004), 32(11), 3418-3426

Transcription factors (TFs) of bacterial helix-turn-helix superfamilies exhibit different effector-binding domains (EBDs) fused to a DNA-binding domain with a common feature. In a previous study of the ... [more ▼]

Transcription factors (TFs) of bacterial helix-turn-helix superfamilies exhibit different effector-binding domains (EBDs) fused to a DNA-binding domain with a common feature. In a previous study of the GntR superfamily, we demonstrated that classifying members into subfamilies according to the EBD heterogeneity highlighted unsuspected and accurate TF-binding site signatures. In this work, we present how such in silico analysis can provide prediction tools to discover new cis/trans relationships. The TF-binding site consensus of the HutC/GntR subfamily was used to (i) predict target sites within the Streptomyces coelicolor genome, (ii) discover a new HutC/GntR regulon and (iii) discover its specific TF. By scanning the S.coelicolor genome we identified a presumed new HutC regulon that comprises genes of the phosphotransferase system (PTS) specific for the uptake of N-acetylglucosamine (PTSNag). A weight matrix was derived from the compilation of the predicted cis-acting elements upstream of each gene of the presumed regulon. Under the assumption that TFs are often subject to autoregulation, we used this matrix to scan the upstream region of the 24 HutC-like members of S.coelicolor. orf SCO5231 (dasR) was selected as the best candidate according to the high score of a 16 bp sequence identified in its upstream region. Our prediction that DasR regulates the PTSNag regulon was confirmed by in vivo and in vitro experiments. In conclusion, our in silico approach permitted to highlight the specific TF of a regulon out of the 673 orfs annotated as 'regulatory proteins' within the genome of S.coelicolor. [less ▲]

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See detailExtending the GHER 3D Model to the modelling of ecosystems in Western Mediterranean coastal zones: results from an exploratory study
Lacroix, Geneviève; Djenidi, Salim ULg

in Martin, Jean-Marie; Barth, Hartmut (Eds.) EROS 2000 (European River Ocean System) (1992)

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See detailExtending the job Demands-Resources Model : safety behaviour and perceived safety climate.
Hansez, Isabelle ULg; Chmiel, N.

Conference (2009, May 16)

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See detailExtending the nuclear roles of I kappa B kinase subunits
Gloire, Geoffrey ULg; Dejardin, Emmanuel ULg; Piette, Jacques ULg

in Biochemical Pharmacology (2006), 72(9), 1081-1089

The transcription factor NF-kappa B plays a key role in a wide variety of cellular processes such as innate and adaptive immunity, cellular proliferation, apoptosis and development. In unstimulated cells ... [more ▼]

The transcription factor NF-kappa B plays a key role in a wide variety of cellular processes such as innate and adaptive immunity, cellular proliferation, apoptosis and development. In unstimulated cells, NF-kappa B is sequestered in the cytoplasm through its tight association with inhibitory proteins called I kappa BS, comprising notably I kappa B alpha. A key step in NF-kappa B activation is the phosphorylation Of I kappa B alpha by the so-called I kappa B kinase (IKK) complex, which targets the inhibitory protein for proteasomal degradation and allows the freed NF-kappa B to enter the nucleus where it can transactivate its target genes. The IKK complex is composed of two catalytic subunits called IKK alpha and IKK beta, and a regulatory subunit called NEMO/IKK gamma. Despite their key role in mediating I kappa B alpha phosphorylation in the cytoplasm, recent works have provided evidence that IKK subunits also translocate into the nucleus to regulate NF-kappa B-dependent and -independent gene expression, paving the way of a novel and exciting field of research. In this review, we will describe the current knowledge in that research area. (c) 2006 Elsevier Inc. All rights reserved. [less ▲]

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See detailExtending the theory of planned behavior as a model of cognitive and motivational influences on academic performance
Broonen, Jean-Paul ULg

in Dubois, Daniel (Ed.) Computing anticipatory systems : Casys 4th international conference, Liège, Belgium, 7-12 August (2001)

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See detailExtension de la notion linguistique de sens implicite à l'image visuelle
Géron, Stéphanie ULg

Master's dissertation (1997)

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See detailExtension du domaine de la littérature
Demoulin, Laurent ULg

in Toussaint, Jean-Philippe (Ed.) La Mélancolie de Zidane (2006)

En se penchant sur la finale de la Coupe du monde de football, Jean-Philippe Toussaint élargit le domaine de la littérature légitime.

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See detailExtension du domaine de la littérature
Demoulin, Laurent ULg

in Toussaint, Jean-Philippe (Ed.) La Mélancolie de Zidane (2009)

En se penchant sur la finale de la Coupe du monde de foot, Jean-Philippe Toussaint élargit le domaine de la littérature légitime.

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See detailExtension du modèle de Cascade Intranucléaire de Liège aux énergies comprises entre 2 et 10 GeV
Pedoux, Sophie ULg

Master of advanced studies dissertation (2006)

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See detailExtension du patrimoine commun
Leleu, Yves-Henri ULg

in Leleu, Yves-Henri; Verbeke, Alain; Taymans, Jean-François (Eds.) et al Manuel de planification patrimoniale. Le couple, vie commune (2009)

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See detailExtension du patrimoine commun:apport d'un bien futur
Dehalleux, Virginie ULg

in Leleu, Yves-Henri; Verbeke, Alain; Taymans, Jean-François (Eds.) et al Manuel de planification patrimoniale, Le couple, Décès (2009)

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See detailExtension du réseau des rivières modélisées aux très petites masses d’eau et mise à jour des masses d’eau, application du modèle Pégase pour l'Agence de l'Eau Loire-Bretagne
Deliège, Jean-François ULg; Bourouag, Mohamed ULg; Everbecq, Etienne ULg et al

Report (2010)

Dans le cadre de la caractérisation des cours d’eau du milieu naturel, l’Agence de l’Eau Loire- Bretagne a confié à l’Aquapôle la tâche d’étendre la sélection des rivières modélisées par le modèle PEGASE ... [more ▼]

Dans le cadre de la caractérisation des cours d’eau du milieu naturel, l’Agence de l’Eau Loire- Bretagne a confié à l’Aquapôle la tâche d’étendre la sélection des rivières modélisées par le modèle PEGASE aux très petites masses d’eau, permettant de représenter finement l’état de la qualité de l’ensemble des masses d’eau de surface du bassin Loire-Bretagne. [less ▲]

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See detailExtension et modulation des usages des outils médiateurs en design industriel. Impact sur les processus de conception.
Elsen, Catherine ULg

Master of advanced studies dissertation (2009)

L'observation via une approche ergonomique compréhensive de l'extension et la modulation de l'utilisation des outils médiateurs en design industriel depuis l'avènement de la CAO nous a permis : (i) d ... [more ▼]

L'observation via une approche ergonomique compréhensive de l'extension et la modulation de l'utilisation des outils médiateurs en design industriel depuis l'avènement de la CAO nous a permis : (i) d'élargir les frontières du domaine de la pré-conception telles que généralement présentées : y sont désormais inclues, en plus des dessins à main levée, les représentations externes générées par les outils de CAO, dont le potentiel de soutien aux phases conceptuelles sera révélé lorsque l'on aura extrait des catachrèses, genèses instrumentales et schèmes d'utilisation l'essence des spécifications qui les rendront tout à fait adaptées; (ii) de moduler les niveaux de compréhension des métiers de la conception en design industriel, en soulignant l'importante part de co-conception et de "conception en cohabitation" qui apparaît avec le nouveau métier de dessinateur et l'usage des outils médiateurs. L'intervention sur le terrain est nourrie de ces apports plus conceptuels qui nous aident à comprendre dans quelle mesure l'amélioration des conditions de travail en conception industrielle pourrait concourir à l'atteinte des objectifs ergonomiques pour les autres métiers et les utilisateurs finaux. [less ▲]

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See detailExtension of Bayesian procedures to integrate and to blend multiple external information into genetic evaluations
Vandenplas, Jérémie ULg; Gengler, Nicolas ULg

Conference (2012, July 18)

Current genetic evaluations are mostly based on local data, potentially followed by an international second step, as it is performed by INTERBULL (Uppsala, Sweden) for dairy breeds. However, reliability ... [more ▼]

Current genetic evaluations are mostly based on local data, potentially followed by an international second step, as it is performed by INTERBULL (Uppsala, Sweden) for dairy breeds. However, reliability of estimated breeding values (EBV) for animals with few local data may be limited. Furthermore, the current development of genomic selection makes this issue more important and the blending of those multiple sources more necessary. Current methods are based on selection index and Bayesian procedures were proposed for a single external source. The aim of this research was to extend these methods to integrate information from multiple sources outside a given evaluation system, i.e. external information, into this genetic evaluation, i.e. internal evaluation, and to assess its potential to blend multiple sources of information when only external information is available. To allow simplifications of the computational burden and the propagation of all external information through the whole pedigree, all animals were considered as animals associated to external information thanks to the prediction of external information from available one for internal animals, i.e. animals with no external information. Multiple considerations of contributions due to relationships among animals were also taken into account. Two dairy cattle populations were simulated across 5 generations. Internal females were randomly mated with internal and 50 external males. Milk production for the first lactation for each female was simulated in both populations. Results for 100 replicates showed that average rank correlations among Bayesian EBV and EBV based on the joint use of external and internal data were close to 1 for both external and internal animals. The respective correlations for the internal evaluation were equal to 0.54 and 0.95. Mean squared error, expressed as a percentage of the internal mean squared error, was close to 0% for both external and internal animals. Thereby, the Bayesian procedure has the potential to integrate and to blend multiple sources of external information to evaluate animals more reliably. [less ▲]

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See detailExtension of characterisation procedures for structural joints to high strength steels
Jaspart, Jean-Pierre ULg; Maquoi, René ULg

in Festschrift Ferdinand TSCHEMMERNEGG (1999)

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See detailExtension of Davenport's Background/Resonant decomposition for the estimation of higher response moments
Denoël, Vincent ULg

in Proceedings of the Sixth European-African Conference on Wind Engineering (2013)

The non Gaussian buffeting analysis of a structure subjected to turbulent wind may be advantageously performed with a Volterra approach. Although this concept may be applicable to nonlinear structures ... [more ▼]

The non Gaussian buffeting analysis of a structure subjected to turbulent wind may be advantageously performed with a Volterra approach. Although this concept may be applicable to nonlinear structures, the scope of this paper is limited to structures with a deterministic linear behavior. In this case, the Volterra kernels take a simple explicit expression and the statistical moments of the structural response are simply recovered by a multi-dimensional integration of the corresponding spectra. Because the multi-dimensional spectra of the loading are usually determined numerically, these integrals have to be computed numerically too. The computational burden necessary for the estimation of these integrals turns out to be prohibitive as soon as high order moments are required (beyond and including 4th moment). The numerical conditioning is in fact again worse when the structural damping is low as the Volterra kernels then exhibit very large gradients in the frequency space, which are difficult to capture properly. Because the timescales related to the dynamics of the structure and to the random wind loading are well distinct, a nowadays customary decomposition of the response into Background and Resonant contributions (dating back to A. Davenport's earliest works) provides a very good estimation of the second statistical moment. Recently the concept has been extended to the Background/biResonant decomposition for the estimation of the third statistical moment of the response. This paper presents the extension to the computation of the fourth statistical moment, with the only assumptions of slight damping and low-frequency loading such as those that made Allan Davenport's Background/Resonant (B/R) decomposition fruitful. After some multiple scales considerations, the fourth moment of the response is approximated as the sum of a background component, a tetraresonant component and a mixed background-biresonant component. Mathematical developments will be presented in the full paper along with illustrative examples, while the current 4-page abstract just presents of a flavour of it. [less ▲]

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