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See detailVers une approche équilibrée des déséquilibres de l'entreprise
Van Caillie, Didier ULg; Santin, Sarah

Scientific conference (2005, October 20)

This presentation proposes a large overview of the different causes of disequilibrium in failing firms and suggests a balanced way (derived from the Balanced ScoreCard model) to take them globally into ... [more ▼]

This presentation proposes a large overview of the different causes of disequilibrium in failing firms and suggests a balanced way (derived from the Balanced ScoreCard model) to take them globally into consideration. [less ▲]

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See detailPourquoi tant de flux d'élèves dans les écoles en discrimination positive ?
Bouchat, Thérèse Marie; Hindryckx, Geneviève ULg

Poster (2005, October 18)

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See detailDomains and maturation processes that regulate the activity of ADAMTS-2, a metalloproteinase cleaving the aminopropeptide of fibrillar procollagens types I-III and V
Colige, Alain ULg; Ruggiero, Florence; Vandenberghe, Isabel et al

in Journal of Biological Chemistry (2005), 280(41), 34397-34408

Processing of fibrillar collagens is required to generate collagen monomers able to self-assemble into elongated and cylindrical collagen fibrils. ADAMTS-2 belongs to the "A disintegrin and ... [more ▼]

Processing of fibrillar collagens is required to generate collagen monomers able to self-assemble into elongated and cylindrical collagen fibrils. ADAMTS-2 belongs to the "A disintegrin and metalloproteinase with thrombospondin type 1 motifs" (ADAMTS) family. It is responsible for most of the processing of the aminopropeptide of type I procollagen in the skin, and it also cleaves type II and type III procollagens. ADAMTS are complex secreted enzymes that are implicated in various physiological and pathological processes. Despite accumulating evidence indicating that their activity is regulated by ancillary domains, additional information is required for a better understanding of the specific function of each domain. We have generated 17 different recombinant forms of bovine ADAMTS-2 and characterized their processing, activity, and cleavage specificity. The results indicated the following: (i) activation of the ADAMTS-2 zymogen involves several cleavages, by proprotein convertases and C-terminal processing, and generates at least seven distinct processed forms; (ii) the C-terminal domain negatively regulates enzyme activity, whereas two thrombospondin type 1 repeats are enhancer regulators; (iii) the 104-kDa form displays the highest aminoprocollagen peptidase activity on procollagen type I; (iv) ADAMTS-2 processes the aminopropeptide of alpha1 type V procollagen homotrimer at the end of the variable domain; and (v) the cleaved sequence (PA) is different from the previously described sites ((P/A)Q) for ADAMTS-2, redefining its cleavage specificity. This finding and the existence of multiple processed forms of ADAMTS-2 strongly suggest that ADAMTS-2 may be involved in function(s) other than processing of fibrillar procollagen types I-III. [less ▲]

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See detailTsunami en Asie du Sud-Est : retour sur la gestion d’un cataclysme naturel apocalyptique
Ozer, Pierre ULg; De Longueville, Florence ULg

in Cybergeo : Revue Européenne de Géographie = Cybergeo - European Journal of Geography (2005)

The tsunami that affected the Indian ocean’s rims on December 26, 2004 claimed close to 226 000 deaths, essentially on the island of Sumatra, Indonesia, which suffered overwhelming devastation. This ... [more ▼]

The tsunami that affected the Indian ocean’s rims on December 26, 2004 claimed close to 226 000 deaths, essentially on the island of Sumatra, Indonesia, which suffered overwhelming devastation. This article asks whether a tsunami warning system is needed in the Indian Ocean where the probability to experience a similar catastrophe is very scarce. In addition, other alternatives including land use planning and education focused on tsunami risk management are presented. Their application could strongly reduce financial and human losses if such hazard had to occur again. [less ▲]

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See detailBulletin agrométéorologique - Septembre 2005
Tychon, Bernard ULg; Ozer, Pierre ULg; De Longueville, Florence ULg et al

in Bulletin Agrométéorologique (2005), 4(5), 1-3

Le mois de septembre fut anormalement chaud et ensoleillé. Les précipitations furent par contre inférieures à la moyenne. A ce stade-ci de l’année, seules les prévisions relatives aux rendements du maïs ... [more ▼]

Le mois de septembre fut anormalement chaud et ensoleillé. Les précipitations furent par contre inférieures à la moyenne. A ce stade-ci de l’année, seules les prévisions relatives aux rendements du maïs fourrager et de la betterave sucrière sont calculées. Par rapport à l’année dernière et, sur l’ensemble du territoire, les prévisions de rendements de la betterave sucrière sont équivalentes, tandis que celles du maïs sont légèrement à la baisse. [less ▲]

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See detailComparison of West African Dwarf (WAD) sheep and F1 crossed West African Long Legged (WALL) rams with WAD ewes in Benin : Growth and Survival traits
Gbangboche, A.; Abiola, F. A.; Leroy, Pascal ULg

in The Global Food & Product Chain— Dynamics, Innovations, Conflicts, Strategies Deutscher Tropentag 2005 (2005, October 11)

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See detailThe vacuum UV photoabsorption spectrum of methyl bromide (CH3Br) and its perdeuterated isotopomer CD3Br: a Rydberg series analysis
Locht, Robert ULg; Leyh, Bernard ULg; Jochims, H.-W. et al

in Chemical Physics (2005), 317(1), 73-86

The vacuum UV photoabsorption spectrum of CH3Br has been recorded between 6 and 25 eV. A large number of vibronic bands are observed. They were partly ascribed to vibrationless Rydberg transitions. In the ... [more ▼]

The vacuum UV photoabsorption spectrum of CH3Br has been recorded between 6 and 25 eV. A large number of vibronic bands are observed. They were partly ascribed to vibrationless Rydberg transitions. In the high photon energy range of 12-25 eV, very weak diffuse bands are mostly assigned to transitions from the 3a(1), 1e and (2a(1) + 1a(1)) to 3s orbitals. In the 6-12 eV photon energy range, numerous weak to strong bands are observed. The sharpness is very variable over the entire spectral region. In a first step, the interpretation of the spectrum and the assignment of the Rydberg transitions is based on the simple Rydberg formula. The observed features are classified in two groups of four series, each converging to one of the two spin-orbit components of the (X) over tilde E-2 state of CH3Br+. Rydberg series of nsa(1), npa(1), npe, nd and possibly nf characters are observed. The same measurements have been made for the first time on CD3Br in the 6-12 eV photon energy range. The observed features are classified into the same Rydberg series characterized by nearly the same delta values. Ionization energies for CD3Br (X) over tilde (2) E-3/2 at 10.565 eV and (X) over tilde (2) E-1/2 at 10.902 eV are deduced. In a second step, we fitted the experimental data to an energy expression taking into account both the exchange interaction and the spin-orbit coupling. Already states with n = 6 are found to correspond to Hund's case (c). Constant values of the quantum defects are deduced. (C) 2005 Elsevier B.V. All rights reserved. [less ▲]

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See detailSecondary prevention of macrovascular events in patients with type 2 diabetes in the PROactive Study (PROspective pioglitAzone Clinical Trial In macroVascular Events): a randomised controlled trial
Dormandy, John A.; Charbonnel, Bernard; Eckland, David J. A. et al

in Lancet (2005), 366(9493), 1279-1289

Background Patients with type 2 diabetes are at high risk of fatal and non-fatal myocardial infarction and stroke. There is indirect evidence that agonists of peroxisome proliferator-activated receptor ... [more ▼]

Background Patients with type 2 diabetes are at high risk of fatal and non-fatal myocardial infarction and stroke. There is indirect evidence that agonists of peroxisome proliferator-activated receptor gamma (PPAR gamma) could reduce macrovascular complications. Our aim, therefore, was to ascertain whether pioglitazone reduces macrovascular morbidity and mortality in high-risk patients with type 2 diabetes. Methods We did a prospective, randomised controlled trial in 5238 patients with type 2 diabetes who had evidence of macrovascular disease. We recruited patients from primary-care practices and hospitals. We assigned patients to oral pioglitazone titrated from 15 mg to 45 mg (n=2605) or matching placebo (n=2633), to be taken in addition to their glucose-lowering drugs and other medications. Our primary endpoint was the composite of all-cause mortality, non-fatal myocardial infarction (including silent myocardial infarction), stroke, acute coronary syndrome, endovascular or surgical intervention in the coronary or leg arteries, and amputation above the ankle. Analysis was by intention to treat. This study is registered as an International Standard Randomised Controlled Trial, number ISRCTN NCT00174993. Findings Two patients were lost to follow-up, but were included in analyses. The average time of observation was 34.5 months. 514 of 2605 patients in the pioglitazone group and 572 of 2633 patients in the placebo group had at least one event in the primary composite endpoint (HR 0.90, 95% CI 0.80-1.02, p=0.095). The main secondary endpoint was the composite of all-cause mortality, non-fatal myocardial infarction, and stroke. 301 patients in the pioglitazone group and 358 in the placebo group reached this endpoint (0.84, 0.72-0.98, p=0.027). Overall safety and tolerability was good with no change in the safety profile of pioglitazone identified. 6% (149 of 2065) and 4% (108 of 2633) of those in the pioglitazone and placebo groups, respectively, were admitted to hospital with heart failure; mortality rates from heart failure did not differ between groups. Interpretation Pioglitazone reduces the composite of all-cause mortality, non-fatal myocardial infarction, and stroke in patients with type 2 diabetes who have a high risk of macrovascular events. [less ▲]

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See detailProduction of novel radiation-hardening binding agents
Schmitz, Jörg; Detrembleur, Christophe ULg; Fischer, Wolfgang et al

Patent (2005)

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung neuartiger Bindemittel, die unter Einwirkung aktinischer Strahlung mit ethylenisch ungesättigten Verbindungen unter Polymerisation ... [more ▼]

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung neuartiger Bindemittel, die unter Einwirkung aktinischer Strahlung mit ethylenisch ungesättigten Verbindungen unter Polymerisation reagierende Gruppen und gegebenenfalls auch gegenüber Isocyanaten reaktive Gruppen aufweisen, sowie deren Verwendung in Beschichtungsmitteln. [less ▲]

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See detailHerstellung von neuen strahlenhärtenden bindemitteln
Detrembleur, Christophe ULg; Weikard, Jan; Greszta-Franz, Dorota et al

Patent (2005)

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung neuartiger Bindemittel, die unter Einwirkung aktinischer Strahlung mit ethylenisch ungesättigten Verbindungen unter Polymerisation ... [more ▼]

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung neuartiger Bindemittel, die unter Einwirkung aktinischer Strahlung mit ethylenisch ungesättigten Verbindungen unter Polymerisation reagierende Gruppen und gegebenenfalls auch gegenüber Isocyanaten reaktive Gruppen aufweisen, sowie deren Verwendung in Beschichtungsmitteln. [less ▲]

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See detailNiedrigviskose Allophanate mit aktinisch härtbaren Gruppen
Detrembleur, Christophe ULg; Weikard, Jan; Grestza-Franz, Dorota et al

Patent (2005)

Die vorliegende Erfindung betrifft niedrigviskose Umsetzungsprodukte von Polyisocyanaten, die aktivierte unter Einwirkung aktinischer Strahlung mit ethylenisch ungesättigten Verbindungen unter ... [more ▼]

Die vorliegende Erfindung betrifft niedrigviskose Umsetzungsprodukte von Polyisocyanaten, die aktivierte unter Einwirkung aktinischer Strahlung mit ethylenisch ungesättigten Verbindungen unter Polymerisation reagierende Gruppen enthalten, ein Verfahren zu ihrer Herstellung sowie deren Verwendung in Beschichtungsmitteln. [less ▲]

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See detailProduction of novel radiation-hardening binding agents
Detrembleur, Christophe ULg; Weikard, Jan; Greszta-Franz, Dorota et al

Patent (2005)

The invention relates to a method for producing novel binding agents comprising groups reacting with polymerising ethylenically unsaturated compounds under the action of actinic radiation and optionally ... [more ▼]

The invention relates to a method for producing novel binding agents comprising groups reacting with polymerising ethylenically unsaturated compounds under the action of actinic radiation and optionally also isocyanate-reactive groups. The invention also relates to the use of said binding agents in coating substances. [less ▲]

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See detailLow viscosity allophanates having actinically hardenable groups
Detrembleur, Christophe ULg; Weikard, Jan; Geszta-Franz, Dorota et al

Patent (2005)

The invention relates to low-viscosity conversion products of polyisocyanates containing activated groups that, under the influence of actinic radiation, react with ethylenically unsaturated compounds ... [more ▼]

The invention relates to low-viscosity conversion products of polyisocyanates containing activated groups that, under the influence of actinic radiation, react with ethylenically unsaturated compounds while polymerizing, to a method for producing these conversion products, and to their use in coating agents. [less ▲]

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See detailLow viscosity allophanates having actinically hardenable groups
Schmitz, Jörg; Mundstock, Holger; Fischer, Wolfgang et al

Patent (2005)

Die vorliegende Erfindung betrifft niedrigviskose Umsetzungsprodukte von Polyisocyanaten, die aktivierte unter Einwirkung aktinischer Strahlung mit ethylenisch ungesättigten Verbindungen unter ... [more ▼]

Die vorliegende Erfindung betrifft niedrigviskose Umsetzungsprodukte von Polyisocyanaten, die aktivierte unter Einwirkung aktinischer Strahlung mit ethylenisch ungesättigten Verbindungen unter Polymerisation reagierende Gruppen enthalten, ein Verfahren zu ihrer Herstellung sowie deren Verwendung in Beschichtungsmitteln. [less ▲]

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See detailProduction of novel radiation-hardening binding agents
Mundstock, Holger; Schmitz, Jörg; Detrembleur, Christophe ULg et al

Patent (2005)

The invention relates to a method for producing novel binding agents comprising groups reacting with polymerising ethylenically unsaturated compounds under the action of actinic radiation and optionally ... [more ▼]

The invention relates to a method for producing novel binding agents comprising groups reacting with polymerising ethylenically unsaturated compounds under the action of actinic radiation and optionally also isocyana te- reactive groups. The invention also relates to the use of said binding agent s in coating substances. [less ▲]

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See detailL'astronomie dans le monde
Manfroid, Jean ULg

in Ciel (Le) (2005), 67

Un noyau de galaxie orphelin, La Voie Lactée barrée, Millième pour SOHO, Spirit, Astéroïde 1998 SF36 Itokawa, Titan, Olivine dans Tempel 1, Explosion lointaine

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See detailMapping extreme-scale alignments of quasar polarization vectors
Hutsemekers, Damien ULg; Cabanac, R.; Lamy, H. et al

in Astronomy and Astrophysics (2005), 441

Based on a new sample of 355 quasars with significant optical polarization and using complementary statistical methods, we confirm that quasar polarization vectors are not randomly oriented over the sky ... [more ▼]

Based on a new sample of 355 quasars with significant optical polarization and using complementary statistical methods, we confirm that quasar polarization vectors are not randomly oriented over the sky with a probability often in excess of 99.9%. The polarization vectors appear coherently oriented or aligned over huge ( 1 Gpc) regions of the sky located at both low (z Ë 0.5) and high (z Ë 1.5) redshifts and characterized by different preferred directions of the quasar polarization. In fact, there seems to exist a regular alternance along the line of sight of regions of randomly and aligned polarization vectors with a typical comoving length scale of 1.5 Gpc. Furthermore, the mean polarization angle bartheta appears to rotate with redshift at the rate of 30° per Gpc. The symmetry of the the bartheta -z relation is mirror-like, the mean polarization angle rotating clockwise with increasing redshift in North Galactic hemisphere and counter-clockwise in the South Galactic one. These characteristics make the alignment effect difficult to explain in terms of local mechanisms, namely a contamination by interstellar polarization in our Galaxy. While interpretations like a global rotation of the Universe can potentially explain the effect, the properties we observe qualitatively correspond to the dichroism and birefringence predicted by photon-pseudoscalar oscillation within a magnetic field. Interestingly, the alignment effect seems to be prominent along an axis not far from preferred directions tentatively identified in the Cosmic Microwave Background maps. Although many questions and more particularly the interpretation of the effect remain open, alignments of quasar polarization vectors appear as a promising new way to probe the Universe and its dark components at extremely large scales. [less ▲]

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See detailFirst evidence for a resolved structure in the inner Vega system
Absil, Olivier ULg

Poster (2005, October 01)

We report on infrared interferometric observations of Vega obtained in May and June 2005 with the FLUOR instrument installed on the CHARA interferometer. The combination of short and long baselines has ... [more ▼]

We report on infrared interferometric observations of Vega obtained in May and June 2005 with the FLUOR instrument installed on the CHARA interferometer. The combination of short and long baselines has allowed us to study the brightness distribution of the stellar photosphere, and to detect a spatial component which is over-resolved at our lowest resolution (~15 milli-arcseconds). This would be attributed to structure much larger than Vega, but within the CHARA/FLUOR field-of-view (about 1 arcsecond in radius, i.e., 8 AU around Vega). The contrast between the resolved flux and the central star is only slightly above the 1% level in K band. This emission could be interpreted as the first direct detection of thermal and/or scattered light emanating from the innermost part of the Vega debris disk, which is thought to be continuously replenished by asteroid collisions and/or comet evaporation. The possibility of a close stellar or sub-stellar companion is also investigated. [less ▲]

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See detailPhotometric monitoring of the doubly imaged quasar UM 673: possible evidence for chromatic microlensing
Nakos, Theodoros; Courbin, F.; Poels, Joël ULg et al

in Astronomy and Astrophysics (2005), 441

We present the results of two-band CCD photometric monitoring of the gravitationally lensed quasar Q 0142-100 (UM 673). The data, obtained at ESO-La Silla with the 1.54 m Danish telescope in the Gunn i ... [more ▼]

We present the results of two-band CCD photometric monitoring of the gravitationally lensed quasar Q 0142-100 (UM 673). The data, obtained at ESO-La Silla with the 1.54 m Danish telescope in the Gunn i-band (October 1998-September 1999) and in the Johnson V-band (October 1998 to December 2001), were analyzed using three different photometric methods. The light-curves obtained with all methods show variations, with a peak-to-peak amplitude of 0.14 mag in V. Although it was not possible to measure the time delay between the two lensed QSO images, the brighter component displays possible evidence for microlensing: it becomes bluer as it gets brighter, as expected under the assumption of differential magnification of a quasar accretion disk. [less ▲]

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See detailEntropy-based knowledge spreading and application to mobility prediction
François, Jean-Marc; Leduc, Guy ULg

in ACM International conference on Emerging Network Experiments and Technologies (2005, October)

The low quality of service provided by wireless networks does not facilitate the setup of long-awaited services, such as video conversations. In a cellular network, handoffs are an important cause of ... [more ▼]

The low quality of service provided by wireless networks does not facilitate the setup of long-awaited services, such as video conversations. In a cellular network, handoffs are an important cause of packet losses and delay jitter. These problems can be mitigated if proactive measures are taken. This requires each cell to guess the next handoff of each mobile terminal, a problem known as mobility prediction. This prediction can occur thanks to some clues (such as signal strength measurements) giving information about the terminals motion. For example, a clue that locates on which road a mobile is moving is likely to be interesting for all the prediction-enabled cells along that road ---and should therefore be sent to them. This paper proposes a new method aimed at selecting the most relevant clues and finding where to propagate those clues so as to optimize mobility predictions. The pertinence of a clue is measured using information theory and by means of decision trees. This pertinence estimation is exchanged between the cells and allows to build a"relevance map" that helps determine where clues should be sent. It is adapted to the characteristics of wireless terminals such as low bandwidth and processing power. [less ▲]

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