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See detailThe Formation of National Elites de A. Kappeler (ed.)
Martiniello, Marco ULg

in Ethnic and Racial Studies (1995), 18(2), 421-422

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See detailFormation of nick instabilities due to particle clustering along crystal interfaces
Vandewalle, Nicolas ULg; Ausloos, Marcel ULg; Cloots, Rudi ULg

in Physical Review. E : Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics (1997), 56(4), 4042-4047

The kinetic growth of crystal grains is simulated on a square lattice in the presence of mobile particles. The model is based on the Eden and the dynamic epidemic models. Trapping of the particles by the ... [more ▼]

The kinetic growth of crystal grains is simulated on a square lattice in the presence of mobile particles. The model is based on the Eden and the dynamic epidemic models. Trapping of the particles by the advancing front and a short-range repulsion of the particles by the front are both allowed. The grain boundary morphology is studied through the kink density concept and the spatial distribution of particles is discussed. Indeed, the clustering of particles along the crystal edges is found to induce the formation of so-called nick instabilities at the liquid-solid interface. The particles, when trapped near such instabilities, occur as oblique filamentary structures in the crystal matrix, just like river networks. These findings agree with recent experimental observations. The numerical laws are also explained by theoretical arguments based on different characteristic lengths. [less ▲]

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See detailFormation of P Cygni line profiles in relativistically expanding atmospheres
Hutsemekers, Damien ULg; Surdej, Jean ULg

in Astrophysical Journal (1990), 361

The probabilistic approach of Surdej (1979) is followed to generalize the Sobolev (1958) formalism to the case of special relativity, in order to interpret accurately the P Cygni line profiles observed in ... [more ▼]

The probabilistic approach of Surdej (1979) is followed to generalize the Sobolev (1958) formalism to the case of special relativity, in order to interpret accurately the P Cygni line profiles observed in the spectrum of broad absorption-line quasars and supernovae. The expressions of the source function and of the line profile are derived, and it is shown that the relativistic P Cygni line profiles are significantly different from those computed in the framework of the classical theory. Thus, for increasing values of the terminal wind velocity, the red emission wing becomes definitely narrower than the blue one, while the line center emission increases. This is no longer symmetrical in accordance with the relativistic expression of the Doppler effect. [less ▲]

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See detailFormation of P Cygni Line Profiles in Relativistically Expanding Atmospheres. II. The Effect of the Continuum Frequency Shape and Limb Darkening of the Core
Hutsemekers, Damien ULg

in Astrophysical Journal (1993), 417

Abstract image available at: http://adsabs.harvard.edu/abs/1993ApJ...417...97H

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See detailFormation of P Cygni profiles with limb darkening of the stellar core
Surdej, Jean ULg

in Astrophysics & Space Science (1981), 79

In the framework of the Sobolev approximation, the effects of limb darkening of the stellar core on the formation of line profiles in rapidly expanding envelopes are investigated. For the case of outward ... [more ▼]

In the framework of the Sobolev approximation, the effects of limb darkening of the stellar core on the formation of line profiles in rapidly expanding envelopes are investigated. For the case of outward-accelerating envelopes, it is shown that the P Cygni profiles, calculated with and without limb darkening, do appear almost identical as long as the size of the envelope remains large with respect to the radius of the star. As the extent of the envelope decreases, the resulting profiles are found to differ appreciably close to the line center. When considering outward-decelerating (or equivalently inward-accelerating) envelopes, calculations with the limb darkening effects reveal that the P Cygni profiles are more strongly affected than in the previous case. These effects are specially important in the blue wing and near the center of the resulting line profiles, irrespective of the size of the envelope. [less ▲]

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See detailFormation Of Plant Cuticle: Evidence For The Occurrence Of The Peroxygenase Pathway
Lequeu, J.; Fauconnier, Marie-Laure ULg; Chammai, A. et al

in Plant Journal (The) (2003), 36(2),

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See detailFormation of polyamide 12-polyisoprene core-shell particles in polystyrene by reactive blending
Koulic, Christian; François, G.; Jérôme, Robert ULg

in Macromolecules (2004), 37(14), 5317-5322

Polyamide 12 (PA12)-polyisoprene (PIP) particles with a thermoplastic core and a rubbery shell have been prepared in a thermoplastic matrix (PS) by reactive blending. For this purpose, an anhydride-end ... [more ▼]

Polyamide 12 (PA12)-polyisoprene (PIP) particles with a thermoplastic core and a rubbery shell have been prepared in a thermoplastic matrix (PS) by reactive blending. For this purpose, an anhydride-end-capped PS-b-PIP diblock (PS-b-PIP-anh) has been reacted with PA12 chains end-capped (50% of them) by a primary amine and dispersed in PS. A PS-b-PIP-PA12 triblock has been formed at the interface between the PS matrix and the dispersed PA12 microdomains. Thus, the phase morphology consists of PA12 core-PIP shell particles dispersed in PS. The nonreacted PA12 with respect to PS-b-PIP-anh dictates the size of the polyamide (core) domains, and the reactive diblock (mainly the molecular weight of the PIP block) imposes the shell thickness and modulates the core size by its capacity to compatibilize PA12 and the thermoplastic matrix. [less ▲]

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See detailFormation of resonance doublet profiles in rapidly expanding envelopes
Surdej, Jean ULg

in Astrophysics & Space Science (1980), 73

Sobolev's escape probability method is used to investigate the transfer of spectral line radiation for a resonance doublet in a rapidly expanding envelope. A three-level atom model is used to derive ... [more ▼]

Sobolev's escape probability method is used to investigate the transfer of spectral line radiation for a resonance doublet in a rapidly expanding envelope. A three-level atom model is used to derive expressions for the spectral radiation fields J12 and J13, the resulting radiative force exerted per atom, and the resonance doublet profile for the cases of outward-accelerating (or equivalently inward-decelerating) and outward-decelerating (or equivalently inward-accelerating) envelopes. Criteria are deduced under which resonance doublet profiles formed in outward-accelerating and/or outward-decelerating envelopes would appear to be resolved into double P Cygni profiles. [less ▲]

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See detailFormation of Stripelike Flux Patterns Obtained by Freezing Kinematic Vortices in a Superconducting Pb Film
Silhanek, Alejandro ULg; Milosevic, M. V.; Kramer, R. B. G. et al

in Physical Review Letters (2010), 104(1),

We demonstrate experimentally and theoretically that the dissipative state of superconducting samples with a periodic array of holes at high current densities consists of flux rivers resulting from a ... [more ▼]

We demonstrate experimentally and theoretically that the dissipative state of superconducting samples with a periodic array of holes at high current densities consists of flux rivers resulting from a short-range attractive interaction between vortices. This dynamically induced vortex-vortex attraction results from the migration of quasiparticles out of the vortex core (kinematic vortices). We have directly visualized the formation of vortex chains by scanning Hall probe microscopy after freezing the dynamic state by a field cooling procedure at a constant bias current. Similar experiments carried out in a sample without holes show no hint of flux river formation. We shed light on this nonequilibrium phenomena modeled by time-dependent Ginzburg-Landau simulations. [less ▲]

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See detailFormation of the 67-kDa laminin receptor by acylation of the precursor.
Buto, S.; Tagliabue, E.; Ardini, E. et al

in Journal of Cellular Biochemistry (1998), 69(3), 244-51

Even though the involvement of the 67-kDa laminin receptor (67LR) in tumor invasiveness has been clearly demonstrated, its molecular structure remains an open problem, since only a full-length gene ... [more ▼]

Even though the involvement of the 67-kDa laminin receptor (67LR) in tumor invasiveness has been clearly demonstrated, its molecular structure remains an open problem, since only a full-length gene encoding a 37-kDa precursor protein (37LRP) has been isolated so far. A pool of recently obtained monoclonal antibodies directed against the recombinant 37LRP molecule was used to investigate the processing that leads to the formation of the 67-kDa molecule. In soluble extracts of A431 human carcinoma cells, these reagents recognize the precursor molecule as well as the mature 67LR and a 120-kDa molecule. The recovery of these proteins was found to be strikingly dependent upon the cell solubilization conditions: the 67LR is soluble in NP-40-lysis buffer whereas the 37LRP is NP-40-insoluble. Inhibition of 67LR formation by cerulenin indicates that acylation is involved in the processing of the receptor. It is likely a palmitoylation process, as indicated by sensitivity of NP-40-soluble extracts to hydroxylamine treatment. Immunoblotting assays performed with a polyclonal serum directed against galectin3 showed that both the 67- and the 120-kDa proteins carry galectin3 epitopes whereas the 37LRP does not. These data suggest that the 67LR is a heterodimer stabilized by strong intramolecular hydrophobic interactions, carried by fatty acids bound to the 37LRP and to a galectin3 cross-reacting molecule. [less ▲]

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See detailFormation of upper rim acylated calix[4]arenes using a sacrifici al zinc anode
Louati, Alain; Vataj, Rame; Gabelica, Valérie ULg et al

in Tetrahedron Letters (2005), 46(44), 7499-7502

A straightforward electrosynthetic method is described, which allows upper rim acylation of non-p-halogenated calix[4]-arenes. For example, a solution of tetrapropoxycalix[4]arene 4 was electrolysed in ... [more ▼]

A straightforward electrosynthetic method is described, which allows upper rim acylation of non-p-halogenated calix[4]-arenes. For example, a solution of tetrapropoxycalix[4]arene 4 was electrolysed in the presence of ZnBr2, in an undivided cell fitted with a sacrificial zinc anode using pure acetonitrile as solvent, yielding an organozinc species, which was then treated with acetyl chloride in the presence of a palladium catalyst to afford 5,11-diacety1-25,26,27,28-tetrapropoxycalix[4]arene 5 in ca. 35% yield after workup. (c) 2005 Elsevier Ltd. All rights reserved. [less ▲]

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See detailFormation on copper of perfluoroetheralkyl-thiol and dithiol self-assembled monolayers with a perfluoropolyether overlayer
Denayer, Jessica ULg; Volcke, C.; Delhalle, J. et al

in Electrochimica Acta (2012), 63

Copper based electrical contacts are widely used thanks to the high electric conductivity and low cost of this metal. However, the efficiency and durability of the devices can be affected by several ... [more ▼]

Copper based electrical contacts are widely used thanks to the high electric conductivity and low cost of this metal. However, the efficiency and durability of the devices can be affected by several factors including metal oxidation and corrosion. In this paper, a bilayer mixed lubricant has been developed to attenuate those hindrances. It is composed of an immobile layer (perfluoroetheralkyl-thiol and dithiol SAMs) to reduce copper corrosion, and by a mobile layer (PFPE lubricant) to reduce the friction. The perfluorinated SAMs have been successfully achieved on copper and the resulting monolayers exhibit high blocking and insulating behaviors. The spreading of PFPE lubricant on those self-assemblies has then been performed. The resulting bilayer systems are homogeneous and completely wetted by the lubricant. Furthermore, the bilayer systems show higher retention of the thin lubricant film than the bare copper. © 2011 Elsevier Ltd. All rights reserved. [less ▲]

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See detailLa formation professionnelle continue et ses usages. Le cas des secteurs industriels en Région wallonne
Guillaume, Jean-François ULg

in Guyot, Jean-Luc; Mainguet, Christine; Van Haeperen, Béatrice (Eds.) La formation professionnelle continue. L'individu au coeur des dispositifs (2003)

Au départ d'une enquête réalisée en 2001 auprès de 341 travailleurs actifs en 1997 ou 1998 dans un secteur industriel en Région wallonne, l'auteur analyse les pratiques en matière de formation continue en ... [more ▼]

Au départ d'une enquête réalisée en 2001 auprès de 341 travailleurs actifs en 1997 ou 1998 dans un secteur industriel en Région wallonne, l'auteur analyse les pratiques en matière de formation continue en les situant en tant que composantes des trajectoires professionnelles. Ces trajectoires sont identifiées au départ des moments de scansion que constituent les ruptures dans l'activité ou les changements d'employeur, et du contenu des activités qui sont exercées. Dans un contexte où la mobilité et la flexibilité s'imposent dans l'organisation du travail, la formation professionnelle continue semble revêtir des fonctions oscillant entre un préliminaire requis pour l'entrée en emploi et un mode d'intégration ou de gestion de la main-d'oeuvre au sein des entreprises. Même si les données disponibles ne permettent pas d'établir de stricts liens de causalité entre les événements présents dans le parcours professionnel, on notera que l'accès à la formation continue n'est pas l'indice, la garantie ou la conséquence d'une trajectoire en emploi plus ou moins stable - ou plus ou moins heurtée - et que les bénéfices escomptés à l'issue d'une formation continue ne sont pas équivalents. Tous n'en tirent pas un même profit : si pour les uns, faiblement dotés en capital scolaire, la formation a permis d'accéder au marché de l'emploi, pour d'autres, plus riches en capital scolaire, elle offre davantage d'opportunités de promotion, d'évolution salariale et de modifications des tâches quotidiennes qui sont réalisées. [less ▲]

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See detailLa formation professionnelle en Belgique. Elements historiques.
Robert, Jocelyne ULg

E-print/Working paper (1992)

Retrace l'histoire de la formation professionnelle en Belgique, notamment la formation professionnelle destinée aux chômeurs

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See detailFormation professionnelle et approche par les capacités
Orianne, Jean-François ULg; Remy, Céline ULg

Conference (2010, December 10)

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See detailLa formation professionnelle: une réponse au chômage?
Robert, Jocelyne ULg

Master of advanced studies dissertation (1984)

Detailed reference viewed: 37 (9 ULg)
See detailLa formation quantitative des économistes à la lumière de l'évolution des rapports entre les mathématiques et l'économie
Bair, Jacques ULg; Haesbroeck, Gentiane ULg

in Histoire et épistémologie dans l'éducation mathématique: de la maternelle à l'université, Proceedings I (1999)

Dans cet article, on s'efforce de décrire, de comprendre et de justifier l'accroissement progressif des mathématiques dans la formation des économistes; à cet effet, on analyse l'évolution temporelle de ... [more ▼]

Dans cet article, on s'efforce de décrire, de comprendre et de justifier l'accroissement progressif des mathématiques dans la formation des économistes; à cet effet, on analyse l'évolution temporelle de ces deux disciplines. Une attention particulière est portée sur l'enseignement de la finance. [less ▲]

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See detailFormation tout au long de la vie - Ce que l'eLearning peut apporter
Poumay, Marianne ULg

Conference given outside the academic context (2009)

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