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See detailConcurrent observations of ultraviolet aurora and energetic electron precipitation with Mars Express
Gérard, Jean-Claude ULg; Soret, Lauriane ULg; Libert, Ludivine ULg et al

in Journal of Geophysical Research. Space Physics (2015)

The database of the Spectroscopy for the Investigation of the Characteristics of the Atmosphere of Mars (SPICAM) instrument between late January 2004 and Mars 2014 has been searched to identify signatures ... [more ▼]

The database of the Spectroscopy for the Investigation of the Characteristics of the Atmosphere of Mars (SPICAM) instrument between late January 2004 and Mars 2014 has been searched to identify signatures of CO Cameron and CO<inf>2</inf>+ doublet ultraviolet auroral emissions. This study has almost doubled the number of auroral detections based on SPICAM spectra. Auroral emissions are located in the vicinity of the statistical boundary between open and closed field lines. From a total of 113 nightside orbits with SPICAM pointing to the nadir in the region of residual magnetic field, only nine nightside orbits show confirmed auroral signatures, some with multiple detections along the orbital track, leading to a total of 16 detections. The mean energy of the electron energy spectra measured during concurrent Analyzer of Space Plasma and Energetic Atoms/Electron Spectrometer observations ranges from 150 to 280eV. The ultraviolet aurora may be displaced poleward or equatorward of the region of enhanced downward electron energy flux by several tens of seconds and shows no proportionality with the electron flux at the spacecraft altitude. The absence of further UV auroral detection in regions located along crustal magnetic field structures where occasional aurora has been observed indicates that the Mars aurora is a time-dependent feature. These results are consistent with the scenario of acceleration of electrons by transient parallel electric field along semiopen magnetic field lines. © 2015. American Geophysical Union. All Rights Reserved. [less ▲]

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See detailConcurrent simulation of mechatronic systems with variable mechanical configuration
da Silva, Maira M; Bruls, Olivier ULg; Paijmans, Bart et al

in Proceedings of ISMA 2006 (2006, September)

The dynamic behavior of a mechatronic system may be largely dependent on the mechanical configuration. This inevitably affects the performance and the stability of any controller designed using the ... [more ▼]

The dynamic behavior of a mechatronic system may be largely dependent on the mechanical configuration. This inevitably affects the performance and the stability of any controller designed using the classical linear control theory. Major improvements are expected if the controller is designed using the theory of linear parameter varying systems, but one difficulty is then to provide a low-order model which captures the configuration-dependent dynamics. This paper presents a methodology to build such a model in two steps: for several representative configurations, a local linear model is derived, the parameter- dependent model is constructed by interpolation in the configuration space. Moreover, a co-simulation methodology is proposed for mechatronic systems by combining LMS Virtual.Lab Motion and Matlab/Simulink. The methodology is applied to an industrial pick-and-place machine. [less ▲]

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See detailConcurrent Synaptic and Systems Memory Consolidation during Sleep
Mascetti, Laura; Foret, Ariane; Schrouff, Jessica ULg et al

in Journal of Neuroscience (2013), 33(24), 10182-10190

Memories are consolidated during sleep by two apparently antagonistic processes: (1) reinforcement of memory-specific cortical interactions and (2) homeostatic reduction in synaptic efficiency. Using fMRI ... [more ▼]

Memories are consolidated during sleep by two apparently antagonistic processes: (1) reinforcement of memory-specific cortical interactions and (2) homeostatic reduction in synaptic efficiency. Using fMRI, we assessed whether episodic memories are processed during sleep by either or both mechanisms, by comparing recollection before and after sleep. We probed whether LTP influences these processes by contrasting two groups of individuals prospectively recruited based on BDNF rs6265 (Val66Met) polymorphism. Between immediate retrieval and delayed testing scheduled after sleep, responses to recollection increased significantly more in Val/Val individuals than in Met carriers in parietal and occipital areas not previously engaged in retrieval, consistent with “systems-level consolidation.” Responses also increased differentially between allelic groups in regions already activated before sleep but only in proportion to slow oscillation power, in keeping with “synaptic downscaling.” Episodic memories seem processed at both synaptic and systemic levels during sleep by mechanisms involving LTP. [less ▲]

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See detailLa condamnation d'Arthmios de Zéleia
Famerie, Etienne ULg

in Serta Leodiensia secunda. Mélanges publiés à l'occasion du 175e anniversaire de l'Université (1992)

Study of the "ancient and recent atimia" concepts in the Athenian criminal law, illustrated by the Arthmios of Zeleia's affair

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See detailCondensation-Induced Decrease of Small-Angle X-ray Scattering Intensity in Gelling Silica Solutions
Gommes, Cédric ULg; Pirard, Jean-Paul ULg; Goderis, Bart

in Journal of Physical Chemistry C: Nanomaterials, Interfaces, and Hard Matter (2010), 114

We propose a mathematical modeling of the total SAXS intensity in silica sol-gel processes in terms of hydrolysis and condensation reactions, as well as of microsyneresis. The results are used to ... [more ▼]

We propose a mathematical modeling of the total SAXS intensity in silica sol-gel processes in terms of hydrolysis and condensation reactions, as well as of microsyneresis. The results are used to rationalize previously published SAXS data of TEOS solutions reacting with organically modified trialkoxysilanes. We notably show that the decrease in SAXS intensity reported for these samples at the end of gelation is a consequence of condensation reactions. The water released by the latter reactions contributes to reduce the electron density difference between the silica and the solvent phases of the gels [less ▲]

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See detailCondensé de biologie moléculaire à l'usage des biomathématiques et de la bioinformatique
Baurain, Denis ULg

Scientific conference (2004, October 26)

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See detailCondenser heat recovery in air conditioning systems
Hanus, Vincent; Lebrun, Jean ULg; Lemort, Vincent ULg

(2006, November)

This paper is based on the first Belgian case study developed in the frame of the IEA-ECBCS annex 48 project. It concerns an industrial building in which simultaneous cooling and heating demands subsist ... [more ▼]

This paper is based on the first Belgian case study developed in the frame of the IEA-ECBCS annex 48 project. It concerns an industrial building in which simultaneous cooling and heating demands subsist all along the year: boilers and chillers are working in parallel and nothing is currently done to recover the condensers heat. In such existing building, one of the first energy retrofit to be considered consists in installing a heat pump between the chillers condensers and the hot water distribution, or in making the condensing temperature compatible with heating requirements. The COP of this heat recovery process is expected to overpass 3. Combined with the efficiency of a modern TGV power plant (~55%), this COP makes heat pumping using less than one half of the primary energy consumed by the best boiler available. And the CO2 emission is reduced in proportion… [less ▲]

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See detailCondições Semióticas da Repetição
Lindenberg Lemos, Carolina ULg

Doctoral thesis (2015)

Emanating from different areas of the human sciences, repetition was given a central role in this thesis of semiotic inclination. It is a widespread phenomenon in all fields of human activity and ... [more ▼]

Emanating from different areas of the human sciences, repetition was given a central role in this thesis of semiotic inclination. It is a widespread phenomenon in all fields of human activity and, particularly, in texts. The optional character of certain repetitions in texts brings about the problem of its function, since, in certain cases, it seems to act directly on the rhythm of the content and the flow of entrances and exits of the phenomenal field. This regulation of the rhythm divides the research into two fronts. On the one hand, the rhythmic effect points to an underlying structure. In that sense, one can ask: what is the configuration of such structure? In what way is repetition part of it? Or even, what is its place in the semiotic model? On the other hand, repetition seems to involve a certain degree of contradiction: in what way can a phenomenon that brings no novelty, only the resumption of the same, sometimes create an effect of tension or surprise? In order to answer these questions, we undertake the revision of the role of repetition in neighboring fields: rhetoric and a specific trend in linguistics. This discussion has allowed us to detect a few insufficiencies in these approaches that may be answered by semiotics. From the semiotic perspective, we have explored the place occupied by repetition, by opposing it to concepts such as identification, text, language and to the notion of semiotics itself. Once the position of repetition in the text is established, we move on to note and discuss the textual conditions necessary to the occurrence of relevant repetitions. In addition to identification, the notion of salience, based on the opposition between figure and ground, revealed itself to be central to the explanation of the phenomenon. Finally, linearity has also proven relevant, which allowed us to re-discuss its theoretical status as one possible manifestation of the underlying syntagmatic structure. Having outlined the conditions for repetition, we have started an investigation into the somewhat contradictory effects we had observed in repetitive incidents. We saw that repetition belongs to the order of extent – it is counted, not measured – and, in being so, it is a tool for the manifestation of the rhythm of the content that is presupposed by it. In these terms, repetition is subordinated to the intensive sub-dimensions: tempo and tonicity. To ensure the relevance of our arguments, we studied repetition within some selected objects, where it is made to serve of the text. Finally, the analysis of these objects shed light on the relations between repetition and the concept of aspect, and three styles of textual progression related to repetition were confirmed: circular, linear and spiraling. This path of investigation has shown us the terms which repetition is tied to and the way in which it manifests an underlying structure. It has also revealed that such structure not only explains but also generates the variations in rhythm and tempo that are felt through repetition. The apparent contradictions of the effects of repetition are explained by the very epistemological bases of the field. The analytical and relational aspects of semiotics are the basis for repetitive construction, which, without adding any new information, may lead the enunciatee to tension, climax and surprise. [less ▲]

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See detailLa condition de l'article 263, alinéa 4, TFUE relative à l'absence de mesures d'exécution et l'arrêt Telefonica : de l'inutilité d'une réforme
Wildemeersch, Jonathan ULg

in Revue des Affaires Européennes [= RAE] = Law & European Affairs (2014), 2013(4), 861-871

L'auteur examine la portée de la condition relative à l'absence de mesures d'exécution de l'article 263, alinéa 4, in fine, TFUE au regard du premier arrêt de la Cour de justice de l'Union européenne ... [more ▼]

L'auteur examine la portée de la condition relative à l'absence de mesures d'exécution de l'article 263, alinéa 4, in fine, TFUE au regard du premier arrêt de la Cour de justice de l'Union européenne relatif à cette notion (CJUE, arrêt du 19 décembre 2013, Telefonica/Commission, aff. C-274/12 P). [less ▲]

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See detailLa condition des personnes dans l'Union européenne
Carlier, Jean-Yves ULg

Book published by Larcier (2007)

Traite de l'ensemble de la condition des personnes dans l'Union européenne: circulation des personnes, migrations,citoyenneté, droits fondamentaux, justice, vie sociale

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See detailCondition evaluation of the existing structure prior to overlay (chapter 3)
Courard, Luc ULg; Trevino, Manuel; Bissonnette, Benoît

in Bissonnette, Benoît; Courard, Luc; Fowler, David (Eds.) et al Bonded cement-based material overlays for the repair, the lining or the strengthening of slabs and pavements (2011)

The knowledge and analysis of the causes of degradations is the first step in repairing existing concrete structures. The assessment is performed by using destructive and non destructive methods. These ... [more ▼]

The knowledge and analysis of the causes of degradations is the first step in repairing existing concrete structures. The assessment is performed by using destructive and non destructive methods. These allow detecting modification of physical, chemical and/or mechanical properties of concrete: cracking, deformation, spalling, carbonation, etc., are various causes of distress, with potential irreversible consequences on concrete structure behaviour. A description of specific methods for pavements and structural slabs is proposed; it is usually recommended to combine complementary methods for efficient diagnosis. This chapter wants to offer an overview of techniques and references that could help the user in selecting the most appropriate investigation program. [less ▲]

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See detailLa condition juridique de la femme dans l'antiquité romaine
Vigneron, Roger; Gerkens, Jean-François ULg

Learning material (1992)

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See detailThe Condition of Felicity of a Blind Instrument
Melard, François ULg

Conference (2001, November 03)

This paper deals with an historical and ethnographic case : the operation of field laboratories in the sugar industry and their use of an instrument to measure a vegetable - the sugar beet. An optical ... [more ▼]

This paper deals with an historical and ethnographic case : the operation of field laboratories in the sugar industry and their use of an instrument to measure a vegetable - the sugar beet. An optical instrument – the polariscope - gives voice to sugar beets in order to settle agreements on the vegetable's industrial definition and financial value. The polariscope gained its strange authority through a historical and technical capacity for mediation : a mediation between sugar beet growers and sugar manufacturers (and their social interests), but especially a mediation between these social actors and the vegetable itself. I focus on the idea that, in fact, this instrument is “blind” and describe the sociological “exchanges of properties” that take place between human and non-human actors in an industrial, public, and low-tech setting. My study shows that this is a challenging and alternative way - far from scientific laboratories - by which knowledge and coordination are produced. [less ▲]

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See detailCondition profane et condition sacrificielle selon Sâyana-Mâdhava
Verpoorten, Jean-Marie ULg

in Acta Orientalia Belgica (1991), 6

La description par Sāyaņa (commentateur de nombreuses œuvres relevant du Veda, 1296-1387) des préparatifs du sacrifice védique aux nouvelle et pleine lunes permet de saisir la méthode pour sacraliser ... [more ▼]

La description par Sāyaņa (commentateur de nombreuses œuvres relevant du Veda, 1296-1387) des préparatifs du sacrifice védique aux nouvelle et pleine lunes permet de saisir la méthode pour sacraliser actes et paroles profanes. Ces préparatifs commencent la veille du rite quand on cueille une branche grâce auquel on écartera les veaux des vaches qui fournissent le lait d’offrande. Puis vient la description minutieuse des gestes et des versets qui accompagnent la fabrication de la jonchée et celle du gâteau. On n’oublie pas d’amadouer ou d’expulser les forces démoniaques qui peuvent perturber la cérémonie. On construit l’autel (vedi) et on purifie les cuillers servant aux puisées de lait. L’un des officiants lie la ceinture de l’épouse du patron du sacrifice de manière à ce qu’elle participe avec lui au rite. Avec le beurre fondu qu’on a au préalable miré, on asperge matières oblatoires et bûches. Vient ensuite l’oblation dans le feu du lait mentionné ci-avant mais cette partie de la cérémonie n’est pas décrite ici. Le lecteur se rend compte, au fil des pages, que la condition profane des êtres et des choses se sacralise via des actes comme des attouchements, des essuyages, des effleurements, des aspersions, des filtrages et des échauffements accompagnés de versets au Ŗgveda etc. Contribuent aussi à cette sacralisation des instruments comme une côte de cheval pour couper de l’herbe ou les multiples cuillers sacrificielles. Les dieux ne peuvent pas sacrifier, parce qu’ils n’ont personne au dessus d’eux à qui faire une offrande .Les animaux ne le peuvent pas non plus, car ils ne peuvent exécuter des rites et n’en désirent pas les fruits. L’homme est donc le seul être capable de sacrifier, mais il doit se conformer à la méthode enseignée par la révélation védique. [less ▲]

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See detailLa condition techno-logique de l'homme
de Villers Grand Champs, Bénédicte ULg

in Piret, Pierre (Ed.) La littérature à l’ère de la reproductibilité technique. Réponses littéraires au niveau dispositif représentatif créé par les médias modernes (2007)

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See detailConditional Asset Allocation: Does Market Wide liquidity Matter?
Bazgour, Tarik ULg; Sougné, Danielle ULg; Heuchenne, Cédric ULg

Scientific conference (2013, June)

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See detailConditional Asset Allocation: Does Market Wide liquidity Matter?
Bazgour, Tarik ULg; Sougné, Danielle ULg; Heuchenne, Cédric ULg

Scientific conference (2013, April 17)

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See detailConditional Asset Allocation: Does Market Wide liquidity Matter?
Bazgour, Tarik ULg; Sougné, Danielle ULg; Heuchenne, Cédric ULg

Scientific conference (2013, March 07)

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See detailConditional Asset Allocation: Does Market-Wide Liquidity Matter?
Sougné, Danielle ULg; Heuchenne, Cédric ULg; Bazgour, Tarik ULg

Conference (2012, September 19)

Detailed reference viewed: 53 (13 ULg)