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See detailIs bounce juggling easier in a parabolic billiard than in a wedge
Chang, Dong Eui; Ronsse, Renaud; Sepulchre, Rodolphe ULg

in Proceedings of the 5th Euromech nonlinear dynamics conference (2005)

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See detailOscillator Models and Collective Motion: Splay State Stabilization of Self-Propelled Particles
Paley, Derek; Leonard, Naomi; Sepulchre, Rodolphe ULg

in Proceedings of the 44th IEEE Conference on Decision and Control and European Control Conference (2005)

This paper presents a Lyapunov design for the stabilization of collective motion in a planar kinematic model of N particles moving at constant speed. We derive a control law that achieves asymptotic ... [more ▼]

This paper presents a Lyapunov design for the stabilization of collective motion in a planar kinematic model of N particles moving at constant speed. We derive a control law that achieves asymptotic stability of the splay state formation, characterized by uniform rotation of N evenly spaced particles on a circle. In designing the control law, the particle headings are treated as a system of coupled phase oscillators. The coupling function which exponentially stabilizes the splay state of particle phases is combined with a decentralized beacon control law that stabilizes circular motion of the particles in the splay state formation around the center of mass of the group. [less ▲]

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See detailComment articuler de façon durable, production et grande distribution ? Vers un référentiel de durabilité
Stassart, Pierre M ULg; Jamar, Daniel

in Actes du PSDR Territoires et enjeux du développement régional (2005)

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See detailMamluk Era Documentary Studies: The State of the Art
Bauden, Frédéric ULg

in Mamlūk Studies Review (2005), IX(1), 15-60

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See detailNote su alcuni mosaici ostiensi di nuova e remota acquisizione.
Morard, Thomas ULg

in X Congresso dell'Associazione Italiana per lo Studio e la Conservazione del Mosaico (AISCOM) : Lecce 18-21 février 2004 (2005)

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See detailMonachisme féminin au pays de Liège à la fin du XVIIe siècle : une vie sub clausura perpetua ?
Henneau, Marie-Elisabeth ULg

in Histoire, Economie et Société (2005), 3

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See detailStructures in Fire: yesterday, today and tomorrow
Franssen, Jean-Marc ULg

in Gottluk, D T; Lattimer, B Y (Eds.) Fire Safety Science - Proceedings of the Eighth International Symposium (2005)

This paper presents the author's view on various methods used for the evaluation of the behaviour of structures submitted to fire, namely experimental testing, tabulated data, simple calculation methods ... [more ▼]

This paper presents the author's view on various methods used for the evaluation of the behaviour of structures submitted to fire, namely experimental testing, tabulated data, simple calculation methods and numerical simulation. The evolution during the last decades, and the pertinence of these methods in different situations are discussed. The challenges that scientists and researchers are facing now and the problems that will need be addressed in the future are presented. [less ▲]

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See detailInterferometric fringes projection system for 3D profilometry and relief investigation
Moreau, Vincent; Laboury, Dimitri ULg; Tilkens, Bernard et al

in Optical Methods for Arts and Archaeology, Proceedings of SPIE, Vol. 5857 (2005)

We present a new 3D full-frame profilometer based on structured laser light projection method. This device takes advantage of the polarization states splitting technique for producing and shifting ... [more ▼]

We present a new 3D full-frame profilometer based on structured laser light projection method. This device takes advantage of the polarization states splitting technique for producing and shifting multiple sinusoidal Young’s interference patterns that are projected on the inspected surface. The principle of the technique is presented and we discuss the advantages of monochromatic light projection method as a mean to overcome ambient lighting for in-situ measurement. Some results that we obtained on objects from the Egyptian Department of the British Museum are presented to demonstrate that 3D laser profilometry is a worthwhile technique for epigraphic investigations where naked-eye inspections fail. [less ▲]

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See detailA toy model for generalised parton distributions
Cudell, Jean-René ULg; Bissey, F.; Cugnon, Joseph ULg et al

in AIP Conference Proceedings (2005), 775

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See detailBrouillards et mauvaises visibilités en Belgique : Analyse menée à partir des observations météorologiques effectuées dans les aéroports civils
Erpicum, Michel ULg; De Swert; Nyssen, Thierry et al

in Publications de l'Association Internationale de Climatologie (2005), 18

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See detailLa cité, les dèmotelè hiera et les prêtres
Pirenne-Delforge, Vinciane ULg

in Dasen, Véronique; Piérart, Marcel (Eds.) Idia kai dèmosia. Les cadres « privés » et « publics » de la religion grecque antique (2005)

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See detailLa langue comme facteur d'intégration ou d'exclusion. L'Athènes du Ve s. et la Rome de Cicéron
Rochette, Bruno ULg

in Angelli Bertinelli, Maria Gabriella (Ed.) Serta antiqua et mediaevalia VII. Il cittadino, lo straniero, Il barbaro, fra integratione ed emarginazione nell'antichità. Atti del I° Incontro internazionale di Storia Antica (2005)

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See detailSecondary metabolites in roots and implications for nematode resistance in banana (Musa spp.)
Wuyts, Nathalie; Lognay, Georges ULg; Sagi, Laszlo et al

in Turner, David W.; Rosales, Franklin E. (Eds.) Banana Root System: towards a better understanding for its productive management (2005)

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See detailConsensus algorithms for the generation of all maximal bicliques
Alexe, Gabriela; Alexe, Sorin; Crama, Yves ULg et al

in Discrete Applied Mathematics (2004), 145(1 Sp. Iss. SI), 11-21

We describe a new algorithm for generating all maximal bicliques (i.e. complete bipartite. not necessarily induced subgraphs) of a graph. The algorithm is inspired by, and is quite similar to. the ... [more ▼]

We describe a new algorithm for generating all maximal bicliques (i.e. complete bipartite. not necessarily induced subgraphs) of a graph. The algorithm is inspired by, and is quite similar to. the consensus method used in propositional logic. We show that some variants of the algorithm are totally polynomial, and even incrementally polynomial. The total complexity of the most efficient variant of the algorithms presented here is polynomial in the input size. and only linear in the output size. Computational experiments demonstrate its high efficiency on randomly generated graphs with up to 2000 vertices and 20,000 edges. (C) 2003 Elsevier B.V. All rights reserved. [less ▲]

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See detailCrp of Streptomyces Coelicolor Is the Third Transcription Factor of the Large Crp-Fnr Superfamily Able to Bind Camp
Derouaux, Adeline ULg; Dehareng, Dominique ULg; Lecocq, Elke et al

in Biochemical and Biophysical Research Communications (2004), 325(3), 983-90

The chromosomal inactivation of the unique transcription factor of Streptomyces coelicolor that displays a cyclic-nucleotide-binding domain, Crp(Sco), led to a germination-defective phenotype similar to ... [more ▼]

The chromosomal inactivation of the unique transcription factor of Streptomyces coelicolor that displays a cyclic-nucleotide-binding domain, Crp(Sco), led to a germination-defective phenotype similar to the mutant of the adenylate cyclase gene (cya) unable to produce cAMP. By means of cAMP affinity chromatography we demonstrate the specific cAMP-binding ability of Crp(Sco), which definitely demonstrate that a Cya/cAMP/Crp system is used to trigger germination in S. coelicolor. However, electromobility shift assays with the purified Crp(Sco)-cAMP complex and the CRP-like cis-acting element of its own promoter failed. Moreover, we were unable to complement an Escherichia coli crp mutant in trans with Crp(Sco). The fact that Vfr from Pseudomonas aeruginosa and GlxR from Corynebacterium glutamicum could complement such an E. coli mutant suggests that the way Crp(Sco) interacts with DNA should mechanistically differ from its most similar members. This hypothesis was further supported by homology modelling of Crp(Sco) that confirmed an unusual organisation of the DNA-binding domain compared to the situation observed in Crp(Eco). [less ▲]

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See detailHypogonadism in a Patient with a Mutation in the Luteinizing Hormone Beta-Subunit Gene
Valdes Socin, Hernan Gonzalo ULg; Salvi, R.; Daly, Adrian ULg et al

in New England Journal of Medicine [=NEJM] (2004), 351(25), 2619-2625

A 30-year-old man who presented with delayed puberty and infertility was found to have hypogonadism associated with an absence of circulating luteinizing hormone. The patient had a homozygous missense ... [more ▼]

A 30-year-old man who presented with delayed puberty and infertility was found to have hypogonadism associated with an absence of circulating luteinizing hormone. The patient had a homozygous missense mutation in the gene that encodes the beta subunit of luteinizing hormone (Gly36Asp), a mutation that disrupted a vital cystine knot motif and abrogated the heterodimerization and secretion of luteinizing hormone. Treatment with human chorionic gonadotropin increased circulating testosterone, promoted virilization, and was associated with the appearance of normal spermatozoa in low concentrations. This case illustrates the important physiological role that luteinizing hormone plays in male sexual maturation and fertility. [less ▲]

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See detailMise en évidence de la faille de Marenne sur la carte géologique Aye - Marche-en-Famenne
Coen-Aubert, Marie; Barchy, Laurent ULg; Marion, Jean-Marc ULg et al

in Bulletin de l'Institut royal des Sciences naturelles de Belgique, Sciences de la Terre (2004), 74(supplement), 59-7118

The revision of the geological map Aye - Marche-en-Famenne (Belgium, Wallonia, Hotton) has emphasized an important deformation structure named the Marenne Fault. This fault is clearly visible at the ... [more ▼]

The revision of the geological map Aye - Marche-en-Famenne (Belgium, Wallonia, Hotton) has emphasized an important deformation structure named the Marenne Fault. This fault is clearly visible at the southeastern face of the Marenne quarry. The dating by rugose corals has allowed to define with precision the Givetian lithologic units that have been put in contact by this normal faul with a later, right-lateral strike-slip component. This fault, that may be traced over a few kilometers to the East, is probably late Hercynian, of the same type and origin as the Lamsoul Fault know to the South of Marche-en-Famenne. It seems to form part of a family of faults which are regularly observed on the south side of the Dinant Synclinorium. [less ▲]

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See detailCurrent levels of drug resistance among therapy-naive HIV-infected patients have significant impact on treatment response
Derdelinckx, Inge; Van Laethem, Kristel; Maes, Bart et al

in Journal of Acquired Immune Deficiency Syndromes [=JAIDS] (2004), 37(5), 1664-1666

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See detailA period and a prediction for the Of ? p spectrum alternator HD 191612
Walborn, Nolan R.; Howarth, Ian D.; Rauw, Grégor ULg et al

in Astrophysical Journal (2004), 617(1, Part 2), 61-64

The observational picture of the enigmatic O-type spectrum variable HD 191612 has been sharpened substantially. A symmetrical, low-amplitude light curve with a period near 540 days has recently been ... [more ▼]

The observational picture of the enigmatic O-type spectrum variable HD 191612 has been sharpened substantially. A symmetrical, low-amplitude light curve with a period near 540 days has recently been reported from Hipparcos photometry. This period satisfies all of the spectroscopy since at least 1982, including extensive new observations during 2003 and 2004, and it has predicted the next transition during 2004 September - October. Measurements of the Ha equivalent width reveal a sharp emission peak in the phase diagram, in contrast to the apparently sinusoidal light curve. The He II absorption-line strength is essentially constant, while He I varies strongly, possibly filled in by emission in the O6 state, thus producing the apparent spectral type variations. The O8 state appears to be the "normal" one. Two intermediate O7 observations have been obtained, which fall at the expected phases, but these are the only modern observations of the transitions so far. The period is too long for rotation or pulsation; although there is no direct evidence as yet for a companion, a model in which tidally induced oscillations drive an enhanced wind near periastron of an eccentric orbit appears promising. Further observations during the now predictable transitions may provide a critical test. Ultraviolet and X-ray observations during both states will likely also prove illuminating. [less ▲]

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