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See detailThe power of hybrid acceleration
Boigelot, Bernard ULg; Herbreteau, Frédéric

in Lecture Notes in Computer Science (2006), 4144

This paper addresses the problem of computing symbolically the set of reachable configurations of a linear hybrid automaton. A solution proposed in earlier work consists in exploring the reachable ... [more ▼]

This paper addresses the problem of computing symbolically the set of reachable configurations of a linear hybrid automaton. A solution proposed in earlier work consists in exploring the reachable configurations using an acceleration operator for computing the iterated effect of selected control cycles. Unfortunately, this method imposes a periodicity requirement on the data transformations labeling these cycles, that is not always satisfied in practice. This happens in particular with the important subclass of timed automata, even though it is known that the paths of such automata have a periodic behavior. The goal of this paper is to broaden substantially the applicability of hybrid acceleration. This is done by introducing powerful reduction rules, aimed at translating hybrid data transformations into equivalent ones that satisfy the periodicity criterion. In particular, we show that these rules always succeed in the case of timed automata. This makes it possible to compute an exact symbolic representation of the set of reachable configurations of a linear hybrid automaton, with a guarantee of termination over the subclass of timed automata. Compared to other known solutions to this problem, our method is simpler, and applicable to a much larger class of systems. [less ▲]

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See detailCompte rendu de l'ouvrage de G. Michaud et É. Nardout-Lafarge, Constructions de la modernité au Québec
Provenzano, François ULg

in Mondes francophones.com : revue mondiale des francophonies (2006)

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See detailHippocampal response at training promotes insight after sleep
Darsaud, Annabelle; Balteau, Evelyne ULg; Desseilles, Martin ULg et al

in NeuroImage (2006), 31(Suppl. 1),

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See detailLa langue des vers : le cas des e post-toniques entravés
Purnelle, Gérald ULg

in Viprey, Jean-Marie (Ed.) JADT 06. Actes des 8es Journées internationales d’Analyse statistique des Données Textuelles (2006)

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See detailDe Duchamp à Mallarmé. Un suspens de la croyance
Durand, Pascal ULg

in Bilous, D. (Ed.) Mallarmé et après ? Fortunes d'une oeuvre (2006)

La carrière et la démarche du poète Mallarmé et de l'artiste Marcel Duchamp sont marquées, pour l'un comme pour l'autre, par un "suspens de la croyance" dans la valeur intrinsèque de l'œuvre d'art, fondé ... [more ▼]

La carrière et la démarche du poète Mallarmé et de l'artiste Marcel Duchamp sont marquées, pour l'un comme pour l'autre, par un "suspens de la croyance" dans la valeur intrinsèque de l'œuvre d'art, fondé sur un rapport d'ironie critique à l'égard du système de production de la valeur esthétique. La présente contribution met en évidence les diverses formes que prend cette ironie, tant dans la théorisation de l'acte esthétique que dans sa mise en pratique au sein des champs symboliques concernés. [less ▲]

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See detailThree dimensional sediment transport model of the Belgian coastal zone: application of the CART theory
Mercier, Christophe ULg; Delhez, Eric ULg

Conference (2006)

Suspended sediment processes in the Belgian coastal zone are discussed by presenting the first results given by a 3D coupled hydrodynamic-sediment transport model covering the Southern Bight in North Sea ... [more ▼]

Suspended sediment processes in the Belgian coastal zone are discussed by presenting the first results given by a 3D coupled hydrodynamic-sediment transport model covering the Southern Bight in North Sea. The hydrodynamic sub-model is three-dimensional, baroclinic and includes a refined turbulence closure. In the sediment transport sub-model, the dynamic of sediments is described by an evolution equation of the sediment concentration in the water column and an equation for the sediment load on the seabed. Sedimentation is modeled through the addition of a sedimentation velocity in the vertical advection term. For the evaluation of deposition and erosion terms, formu- lae based on the calculation of the bottom stress under the combined effect of prevailing currents and waves are used. For more realism, sediment loads has also been split into different sediment classes with different sedimentation, deposition and erosion characteristics. The equations are solved by a finite volume method based on an Arakawa C grid, using sigma-transform and mode-splitting numerical methods. The horizontal resolution is 500x500 m and 10 vertical sigma-layers are used. Advection is handled using a TVD scheme with superbee flux limiter. Boundary conditions are provided by coupling this model to a 3D coupled hydrodynamic-sediment transport model of the North-Western European Continental Shelf. The results are validated with measurements carried out by Haecon NV and are compared with those obtained with the MU-STM model. A sensitivity analysis of the model to critical parameters of erosion, deposition and sedimentation based on the concept of residence time was carried out. [less ▲]

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See detailLe capital social : une introduction
Jacquemain, Marc ULg

in Houard, Jean; Jacquemain, Marc (Eds.) Capital social et dynamique régionale (2006)

The text presents the main articulations within social capital theory : formal and informal, thin and thick, bonding, bridging and linking social capital, with a word about the theory of the "dark side ... [more ▼]

The text presents the main articulations within social capital theory : formal and informal, thin and thick, bonding, bridging and linking social capital, with a word about the theory of the "dark side". It also adresses the question of what is at stake in this theory. Then, the text introduces the main themes of the book : the links between social capital and social cohesion, gender, education, media, entrepeneurship [less ▲]

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See detailNotes à la lecture de quelques textes de Marc Angenot : autour du concept d'idéologie
Provenzano, François ULg

in COnTEXTES : Revue de Sociologie de la Littérature (2006)

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See detailReconversion to organic famring, between organic rules and agro-food chain referential: How to fit out the organic fattening referential?
Jamar, Daniel; Decruyenaere, Virginie; Stassart, Pierre M ULg et al

in European Joint Organic Congress (2006)

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See detailAlimenter le lien entre consommateurs, éleveurs et animaux
Lamine, Claire; Stassart, Pierre M ULg; Bartiaux, Nicole et al

Report (2006)

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See detailBack to work
Stassart, Pierre M ULg; Mormont, Marc ULg; Louviaux, Mélanie

Conference (2006)

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See detailGrowth and carcass performances of Belgian Blue x Nelore and Bradford cattle in Bahia state Brazil
Leroy, Pascal ULg; Leroy, Emile ULg; Cassart, Renaud ULg

in World Congress on Genetics Applied to Livestock Production. Belo Horizonte, Brasil (2006)

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See detailCompte rendu de l'ouvrage de P. Dirkx, Les "Amis belges" : presse littéraire et franco-universalisme
Provenzano, François ULg

in COnTEXTES : Revue de Sociologie de la Littérature (2006)

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See detailTNFa and IKKb-mediated TANK/I-TRAF phosphorylation: implications for interaction with NEMO/IKKg and NF-kB activation
Bonif, Marianne; Meuwis, Marie-Alice ULg; Close, Pierre ULg et al

in Biochemical Journal (2006), 394

Pro-inflammatory cytokines trigger signalling cascades leading to NF-kappaB (nuclear factor-kappaB)-dependent gene expression through IKK [IkappaB (inhibitory kappaB) kinase]-dependent phosphorylation and ... [more ▼]

Pro-inflammatory cytokines trigger signalling cascades leading to NF-kappaB (nuclear factor-kappaB)-dependent gene expression through IKK [IkappaB (inhibitory kappaB) kinase]-dependent phosphorylation and subsequent degradation of the IkappaB proteins and via induced phosphorylation of p65. These signalling pathways rely on sequentially activated kinases which are assembled by essential and non-enzymatic scaffold proteins into functional complexes. Here, we show that the pro-inflammatory cytokine TNFalpha (tumour necrosis factor alpha) promotes TANK [TRAF (TNF receptor-associated factor) family member associated NF-kappaB activator] recruitment to the IKK complex via a newly characterized C-terminal zinc finger. Moreover, we show that TANK is phosphorylated by IKKbeta upon TNFalpha stimulation and that this modification negatively regulates TANK binding to NEMO (NF-kappaB essential modulator). Interestingly, reduced TANK expression by RNA interference attenuates TNFalpha-mediated induction of a subset of NF-kappaB target genes through decreased p65 transactivation potential. Therefore the scaffold protein TANK is required for the cellular response to TNFalpha by connecting upstream signalling molecules to the IKKs and p65, and its subsequent IKKbeta-mediated phosphorylation may be a mechanism to terminate the TANK-dependent wave of NF-kappaB activation. [less ▲]

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See detailPlasma cystatin C for the detection of renal failure in obese patients
Delanaye, Pierre ULg; Cavalier, Etienne ULg; Radermecker, Régis ULg et al

in Nephrology Dialysis Transplantation (2006), 21(S4), 214

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See detailLe capital social : essai de cartographie wallonne
Jacquemain, Marc ULg

in Fédéralisme - Régionalisme (2006), 6

The paper tries to assess how various measures of social capital vary locally within Wallonia

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See detailLa fiction comme sociologie politique
Jacquemain, Marc ULg

in Staquet, Anne; Decharneux, Baudouin (Eds.) Fictions et politiques (2006)

The text examines the work of three sociologists that draw heavily on modelizing explanation : Boudon, Elster and Dupuy. All of them alslo make an extensive use of literrary fiction in the core of their ... [more ▼]

The text examines the work of three sociologists that draw heavily on modelizing explanation : Boudon, Elster and Dupuy. All of them alslo make an extensive use of literrary fiction in the core of their sociological explanation. Above the métaphoric use of fictional examples, the texts defends the idea that modelizing sociology, as paradoxical as it may appear, is very at ease with the use of literary examples because the familiarity with explanatory models helps them to make a clear difference between theory and reality. [less ▲]

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See detailIntroduction : les racines de l'identité collective
Jacquemain, Marc ULg; Italiano, Patrick ULg; Heselmans, Frédéric ULg et al

in Fédéralisme - Régionalisme (2006), 6

The paper shows how social identity theory, which proposes a constructivist verion of identities, fits the case of national or regional identities. The texte pleas of a non essentialist approach of ... [more ▼]

The paper shows how social identity theory, which proposes a constructivist verion of identities, fits the case of national or regional identities. The texte pleas of a non essentialist approach of identities. [less ▲]

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