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See detailTheoretical Understanding of Targeted Energy Transfers for Suppressing Aeroelastic Instabilities in a Nonlinear Aeroelastic Test Apparatus
Lee, Young S.; McFarland, D. Michael; Kerschen, Gaëtan ULg et al

in 45th Technical Meeting of the Society of Engineering Science, Urbana Champaign, 2008 (2008)

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See detailEmpirical Mode Decomposition in the Reduced-Order Modeling of Aeroelastic Systems
Lee, Young S; McFarland, D. Michael; Vakakis, Alexander F. et al

in 49th AIAA Structural Dynamics and Materials Conference, Shaumberg, 2008 (2008)

A relationship between IntrinsicMode Functions (IMFs), derived from the Empirical Mode Decomposition (EMD), and the slow-flow model of a nonlinear dynamical system has been exploited in the development of ... [more ▼]

A relationship between IntrinsicMode Functions (IMFs), derived from the Empirical Mode Decomposition (EMD), and the slow-flow model of a nonlinear dynamical system has been exploited in the development of the Slow Flow Model Identification (SFMI) method for strongly nonlinear systems, in which the physical parameters of such systems are identified from experimental data. Both the slow flows and IMFs provide the means to expand a general multicomponent signal in terms of a series of simpler, dominant, monocomponent signals. The slow flows are obtained analytically, for example through application of the method of complexification and averaging (CxA), which transforms the equations of motion into a set of approximate equations in amplitude and phase for each modeled frequency component. In contrast, the EMD characterizes a signal through the envelope and phase of its elemental components, the IMFs. Thus, between nonlinear transitions, the equations derived using the CxA method govern the amplitude and phase of the modeled IMFs. Application of SFMI has, until now, been limited to low-dimensional systems subjected to impulsive excitation. Herein, the method is extended to identification of a planar rigid airfoil [less ▲]

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See detailVibration Mitigation of Nonlinear Vibrating Structures using Nonlinear Energy Sinks
Viguié, Régis ULg; Peeters, Maxime ULg; Kerschen, Gaëtan ULg et al

in 26th International Modal Analysis Conference, Orlando, 2008 (2008)

The tuned mass damper (TMD) is a simple and efficient device, but it is only effective when it is precisely tuned to the frequency of a vibration mode. Because nonlinear vibrating structures have resonant ... [more ▼]

The tuned mass damper (TMD) is a simple and efficient device, but it is only effective when it is precisely tuned to the frequency of a vibration mode. Because nonlinear vibrating structures have resonant frequencies that vary with the amount of total energy in the system, the efficiency of a TMD is questionable in this case. In the present study, the performance of an essentially nonlinear attachment, termed a nonlinear energy sink (NES), is assessed. It is shown that, unlike the TMD, an NES has no preferential resonant frequency, which makes it a good candidate for vibration mitigation of nonlinear vibrating structures. [less ▲]

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See detailIdentification of the Slow-Flow Dynamics of Transonic Aeroelastic Response from Time-Series Data
Lee, Y. S.; Vakakis, Alexander F.; McFarland, D. M. et al

in 45th Technical Meeting of the Society of Engineering Science, Urbana Champaign, 2008 (2008)

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See detailInfo Congrès: ALFEDIAM 2008 Bruxelles (Belgique): Insulinothérapie et monitoring continu du glucose.
RADERMECKER, Régis ULg

in Infusystèmes France (2008), 25(3), 23-24

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See detailTPI, 9 septembre 2008, MyTravel Group plc/Commission
Petit, Nicolas ULg; Lousberg, Charlotte ULg

in Revue des Affaires Européennes [= RAE] = Law & European Affairs (2008), (4), 785-792

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See detailCalculul Constructiilor Metalice la Actiunea Focului
Franssen, Jean-Marc ULg; Zaharia, Raul

Book published by Editura Orizonturi Universitare (2008)

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See detailFitness And Genetic Variation Of Viola Calaminaria, An Endemic Metallophyte: Implications Of Population Structure And History
Bizoux, Jean-Philippe ULg; Daïnou, Kasso ULg; Raspe, O. et al

in Plant Biology (2008), 10(6), 684-693

We investigated variations in genetic diversity and plant fitness in a rare endemic metallophyte of calamine soils, Viola calaminaria, in relation to population size, population connectivity and ... [more ▼]

We investigated variations in genetic diversity and plant fitness in a rare endemic metallophyte of calamine soils, Viola calaminaria, in relation to population size, population connectivity and population history in order to evaluate and discuss potential conservation strategies for the species. Mean population genetic diversity (Hs = 0.25) of V. calaminaria was similar to endemic non-metallophyte taxa. Twenty-one per cent of the genetic variation was partitioned among populations and a low (9%) but significant differentiation was found among geographical regions. Our results did not support the hypothesis that the acquisition of metal tolerance may result in reduced genetic diversity, and suggested that strict metallophytes do not exhibit higher inter-population differentiation resulting from scattered habitats. There were no relationships between population genetic diversity and population size. Significant correlations were found between plant fitness and (i) population size and (ii) connectivity index. Recently-founded populations exhibited the same level of genetic diversity as ancient populations and also possessed higher plant fitness. There was no indication of strong founder effects in recently-established populations. The results suggest that the creation of habitats through human activities could provide new opportunities for conservation of this species. [less ▲]

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See detailCharacterization of the tropospheric small-scale activity
Brenot, Hugues; Warnant, René ULg

Report (2008)

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See detailCommunication as a sign of adaptation to a complex system: The case of robotic surgery
Nyssen, Anne-Sophie ULg; Blavier, Adelaïde ULg

in Nemeth, C. (Ed.) Improving Healthcare Team Communication: Building on Lessons from Aviation and Aerospace (2008)

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See detailL'héritage des études sociales de l'objet dans l'action
Melard, François ULg

in Melard, François (Ed.) Écologisation : Objets et concepts intermédiaires (2008)

Ce chapitre introductif vise à présenter une série de perspectives de recherche associées à l'étude des objets et dispositifs socio-techniques selon leurs modes d'engagement dans l'action : l'objet ... [more ▼]

Ce chapitre introductif vise à présenter une série de perspectives de recherche associées à l'étude des objets et dispositifs socio-techniques selon leurs modes d'engagement dans l'action : l'objet "transparent", l'objet "média" ou encore l'objet "médiateur". [less ▲]

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See detailDébats belges pour une politique migratoire. Mapping des acteurs
Perrin, Nathalie ULg; Stockmans, Pieter

Book published by Fondation Roi Baudouin (2008)

Cette publication propose un inventaire des principaux acteurs qui contribuent ou peuvent contribuer à définir une politique migratoire pour la Belgique ; elle fait aussi le point sur leurs prises de ... [more ▼]

Cette publication propose un inventaire des principaux acteurs qui contribuent ou peuvent contribuer à définir une politique migratoire pour la Belgique ; elle fait aussi le point sur leurs prises de position récentes. Quel est par exemple le point de vue de la FGTB sur une régularisation ? Que pense la FEB d’une nouvelle migration économique ? Que dit le Conseil des Femmes sur l’accueil des primo-arrivants ? Et bien d’autres encore. [less ▲]

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See detailCognition sociale
Dardenne, Benoît ULg

in van Zanten, Agnès (Ed.) Dictionnaire de l'éducation (2008)

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See detailNORINE: a database of nonribosomal peptides.
Caboche, Segolene; Pupin, Maude; Leclere, Valerie et al

in Nucleic acids research (2008), 36(Database issue), 326-31

Norine is the first database entirely dedicated to nonribosomal peptides (NRPs). In bacteria and fungi, in addition to the traditional ribosomal proteic biosynthesis, an alternative ribosome-independent ... [more ▼]

Norine is the first database entirely dedicated to nonribosomal peptides (NRPs). In bacteria and fungi, in addition to the traditional ribosomal proteic biosynthesis, an alternative ribosome-independent pathway called NRP synthesis allows peptide production. It is performed by huge protein complexes called nonribosomal peptide synthetases (NRPSs). The molecules synthesized by NRPS contain a high proportion of nonproteogenic amino acids. The primary structure of these peptides is not always linear but often more complex and may contain cycles and branchings. In recent years, NRPs attracted a lot of attention because of their biological activities and pharmacological properties (antibiotic, immunosuppressor, antitumor, etc.). However, few computational resources and tools dedicated to those peptides have been available so far. Norine is focused on NRPs and contains more than 700 entries. The database is freely accessible at http://bioinfo.lifl.fr/norine/. It provides a complete computational tool for systematic study of NRPs in numerous species, and as such, should permit to obtain a better knowledge of these metabolic products and underlying biological mechanisms, and ultimately to contribute to the redesigning of natural products in order to obtain new bioactive compounds for drug discovery. [less ▲]

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See detailÉtudes régionales et fédérales : nouvelles perspectives
Dandoy, Régis; Perrin, Nathalie ULg; Van Wynsberghe, Caroline

in Fédéralisme - Régionalisme (2008), 8(2),

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