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See detailFluid therapy in PET
Brichant, Jean-François ULg

Conference (2005, September 30)

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See detailAnesthésie de la femme enceinte pour un acte opératoire non obstétrical
Brichant, Jean-François ULg

Conference (2005, September 26)

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See detailEvaluación de a acción de nuevos policationes sintéticos sobre las propiedades viscoelásticas de la membrana eritrocitaria
Riquelme, B; Foresto, P; Lebensohn, N et al

Conference (2005, September 26)

Detailed reference viewed: 8 (0 ULg)
See detailAnesthésie et réanimation d'une parturiente présentant une prééclampsie
Brichant, Jean-François ULg

Conference (2005, September 26)

Detailed reference viewed: 9 (0 ULg)
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See detailEarly retirement, activities after retirement and the cognitive reserve
Adam, Stéphane ULg; Bay, Christelle; Perelman, Sergio ULg

Conference (2005, September 26)

Detailed reference viewed: 9 (0 ULg)
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See detailNicholas Jose's 'Black Sheep'
Delrez, Marc ULg

Conference (2005, September 24)

Detailed reference viewed: 5 (1 ULg)
Peer Reviewed
See detailTowards 'capabilitating' education policies? A critical analysis of public action in education
Verhoeven, Marie; Dupriez, Vincent; Orianne, Jean-François ULg

Conference (2005, September 12)

Detailed reference viewed: 7 (0 ULg)
Peer Reviewed
See detailAspect in Egyptian: a Semantic Approach
Winand, Jean ULg

Conference (2005, September 10)

Detailed reference viewed: 5 (0 ULg)
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See detailNatural and projectively equivariant quantizations
Radoux, Fabian ULg

Conference (2005, September 02)

Detailed reference viewed: 4 (3 ULg)
See detailModelling of Cellular Dynamics
Bullinger, Eric ULg

Conference (2005, September 01)

Detailed reference viewed: 3 (0 ULg)
Peer Reviewed
See detailConstruire l’Europe sociale dans l’entreprise : conditions et enjeux de la Flexicurité
Donnay, Isabelle; Xhauflair, Virginie ULg

Conference (2005, September)

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See detailFormer à l’université des enseignants qualifiant des professionnels de l’aide aux personnes
Beckers, Jacqueline ULg; Jardon, Dorothée

Conference (2005, September)

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See detailGestion des compétences, impératifs économiques et préoccupations sociales: un mariage forcé
Antoine, Mélanie ULg; Deflandre, Dimitri; Pichault, François ULg

Conference (2005, September)

Cette communication entend faire le point sur les modalités d’introduction d’une démarche compétences, à l’aide d’un cadre d’analyse contextualiste. Nous essayons de montrer que, contrairement aux ... [more ▼]

Cette communication entend faire le point sur les modalités d’introduction d’une démarche compétences, à l’aide d’un cadre d’analyse contextualiste. Nous essayons de montrer que, contrairement aux présupposés d’une certaine littérature normative, la démarche compétences ne contribue pas nécessairement à l’articulation harmonieuse des logiques économiques et sociales : elle peut parfois s’opérer dans une logique purement économique, en-dehors de toute considération sociale. La discussion proposée est menée à partir de deux études de cas dans le secteur de la sidérurgie et de la banque. On y mesure l’influence des différences de contexte, aboutissant à des contenus radicalement opposés : dans le premier cas, l’adoption d’une stratégie de rationalisation et de leadership des coûts, pour faire face à la crise du secteur, conduit à privilégier une approche principalement centrée sur les exigences de la production ; dans le second cas, la préférence accordée à une stratégie de différenciation, dans le cadre d’une fusion entre deux entreprises, semble bel et bien favoriser les possibilités de développement personnel des collaborateurs. Néanmoins, au-delà des différences de contexte, c’est le processus d’introduction de la démarche compétences qui semble compter avant tout: même avec une finalité purement économique dans le premier cas, le processus a été géré de manière prudente, dans le respect des positions syndicales, et avec un évident souci de maintenir un climat social relativement serein. [less ▲]

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See detailInternationale universitaire et enseignement des langues étrangères
Defays, Jean-Marc ULg

Conference (2005, September)

Detailed reference viewed: 10 (2 ULg)
See detailAnesthésie en obstétrique: problèmes cliniques
Brichant, Jean-François ULg

Conference (2005, September)

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See detailReduced-order modeling of flexible mechanisms with configuration-dependent dynamics: a modal approach
Bruls, Olivier ULg

Conference (2005, September)

Modern formalisms in multibody dynamics allow a detailed and reliable representation of complex mechanical systems. However, high levels of accuracy and generality can only be reached at the price of more ... [more ▼]

Modern formalisms in multibody dynamics allow a detailed and reliable representation of complex mechanical systems. However, high levels of accuracy and generality can only be reached at the price of more sophisticated models, which require increased computational resources. Reduction techniques have thus been developed in order to build simplified models able to capture the essential dynamics of a flexible mechanism. In this talk, a methodology is proposed to transform an initial high-order Finite Element model into a low-order and explicit model. The reduction method is an extension of the component-mode technique established in linear structural dynamics, which accounts for the nonlinear kinematics of the mechanism. It relies on the original concept of “Global Modal Parameterization”: the motion of the assembled mechanism is described in terms of rigid and flexible modes, which depend on the mechanical configuration. We will show that the reduction procedure leads to a consistent model, with configuration-dependent parameters. The nonlinear variations of those parameters are approximated using a piecewise polynomial interpolation. This strategy is based on an adaptive configuration space inspection algorithm, which minimizes the computational resources to satisfy a specification on the approximation error. Several examples will be considered in the presentation: a four-bar mechanism, a parallel kinematic machine-tool, and a lightweight manipulator. [less ▲]

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See detailLa pré-éclampsie dans tous ses états. Gestion en anesthésie
Brichant, Jean-François ULg

Conference (2005, September)

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See detailNozzle Capacity and Emissions of a Domestic Fuel Oil Boiler
Masy, Cédric; Ngendakumana, Philippe ULg

Conference (2005, September)

In order to investigate the influence of the nozzle capacity on the performance of fuel oil boilers, tests have been performed in transient and steady state regimes on our experimental boiler. The aim of ... [more ▼]

In order to investigate the influence of the nozzle capacity on the performance of fuel oil boilers, tests have been performed in transient and steady state regimes on our experimental boiler. The aim of the tests was to deduce the better couple nozzle - fuel injection pressure to reach the desired output power while producing fewer pollutants as possible. In short, a high fuel injection pressure associated with a low capacity nozzle is recommended. [less ▲]

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See detailLa gestion de l’emploi dans les centres d’appels : vers une réconciliation des intérêts du client et du travailleur ?
Naedenoen, Frédéric ULg; Rorive, Brigitte

Conference (2005, September)

Répondre à la question de la conciliation des intérêts économiques et sociaux dans les centres d’appels ne peut se faire sans prendre en considération l’extrême hétérogénéité du secteur et des entreprises ... [more ▼]

Répondre à la question de la conciliation des intérêts économiques et sociaux dans les centres d’appels ne peut se faire sans prendre en considération l’extrême hétérogénéité du secteur et des entreprises qui le composent. Souvent dénoncé pour la dégradation des conditions d’emploi et de travail qu’il entraîne, ce secteur d’activité est pourtant loin de répondre à une seule et même logique dans la gestion de l’emploi. Des études de cas diversifiées selon deux axes, le niveau de valeur ajoutée des services offerts par le centre d’appels, et sa complexité organisationnelle, laissent émerger des logiques différentes, influencées par la position de l’entreprise étudiée sur ces deux axes. Elles montrent l’existence d’un lien entre la configuration prise par la relation d’affaires qui unit le centre d’appels à ses clients ou donneurs d’ordres, et la politique interne de gestion de l’emploi. Ce lien n’est pas sans effet sur l’extrême difficulté à concilier les intérêts des travailleurs avec ceux des clients, particulièrement lorsque ces derniers interviennent lourdement dans la gestion interne du centre d’appels, ou en conditionnent fortement le fonctionnement par des exigences contractuelles. [less ▲]

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See detailReduced-order modeling of flexible mechanisms
Bruls, Olivier ULg

Conference (2005, September)

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See detailL’entrepreneuriat féminin: Une trajectoire de mobilité
Constantinidis, Christina ULg

Conference (2005, August 29)

Detailed reference viewed: 40 (4 ULg)
See detailA new system for the controlled radical polymerization of vinyl acetate
Detrembleur, Christophe ULg

Conference (2005, August 28)

Detailed reference viewed: 3 (0 ULg)
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See detailLa conceptualisation dans la démarche inductive. Les ficelles de Becker.
Semal, Nathalie ULg

Conference (2005, August 24)

How can the advice of the famous interactionnist sociologist Howard Becker be helpful to build a research project? A novice researcher vision.

Detailed reference viewed: 117 (3 ULg)
See detailLocation and Morphology of Io's FUV Footprint Emissions on Jupiter
Grodent, Denis ULg; Gérard, Jean-Claude ULg; Saglam, A. et al

Conference (2005, August 07)

Detailed reference viewed: 9 (3 ULg)
See detailOpen flux estimates in Saturn's magnetosphere during the January 2004 Cassini-HST campaign, and implications for reconnection rates
Badman, S. V.; Bunce, E. J.; Clarke, J. T. et al

Conference (2005, August 07)

Detailed reference viewed: 12 (6 ULg)
See detailSpectral Analysis of HST-STIS Observations of Jovian UV Auroral Emissions
Gladstone, G. R.; Gérard, Jean-Claude ULg; Gustin, Jacques ULg et al

Conference (2005, August 01)

Spectral observations of Jupiter's far-ultraviolet (FUV) auroral emissions are commonly used to determine a ``color ratio, - defined as I(155-162nm) / I(123-130nm), which provides an estimate for the peak ... [more ▼]

Spectral observations of Jupiter's far-ultraviolet (FUV) auroral emissions are commonly used to determine a ``color ratio, - defined as I(155-162nm) / I(123-130nm), which provides an estimate for the peak emission altitude of the aurora and thus, assuming an accurate model atmosphere, for the mean energy of precipitating electrons. This is because the nascent emission spectrum resulting from electron impact on H[SUB]2[/SUB] is relatively unchanging over a wide range of energy, so that differential absorption by overlying CH[SUB]4[/SUB] is the primary modifier of the spectral shape of the emergent FUV emissions. This method is analogous to that used at Earth, with N[SUB]2[/SUB] LBH auroral emissions instead of H[SUB]2[/SUB] Lyman and Werner bands and differential absorption by O[SUB]2[/SUB] rather than methane. More detailed simulations of Jupiter's FUV auroral spectra can be used to place useful constraints on higher hydrocarbons, such as acetylene and ethane. Here we present a spectral analysis of HST-STIS G140L observations taken in September 1999, which include a region with the largest color ratio yet observed (i.e., the deepest aurora). A non-linear least squares model fit to the data is used to search for the presence of several important overlying hydrocarbons with strong and distinctive FUV absorption cross sections, e.g., CH[SUB]4[/SUB], C[SUB]2[/SUB]H[SUB]2[/SUB], C[SUB]2[/SUB]H[SUB]4[/SUB], C[SUB]2[/SUB]H[SUB]6[/SUB], CH[SUB]3[/SUB]C[SUB]2[/SUB]H, C[SUB]3[/SUB]H[SUB]8[/SUB], C[SUB]4[/SUB]H[SUB]2[/SUB], C[SUB]2[/SUB]H[SUB]2[/SUB], and C[SUB]4[/SUB]H[SUB]10[/SUB]. We gratefully acknowledge support from NASA through grant NNG05GG97G. [less ▲]

Detailed reference viewed: 20 (2 ULg)
See detailThe UV footprint emission of Io: morphology, brightness and control by Io
Gérard, Jean-Claude ULg; Saglam, Adem ULg; Grodent, Denis ULg et al

Conference (2005, August 01)

Emissions from the magnetic footprint of Io on Jupiter's upper atmosphere has been observed with the Space Telescope Imaging Spectrograph (STIS) since 1997 and more recently with the Advanced Camera for ... [more ▼]

Emissions from the magnetic footprint of Io on Jupiter's upper atmosphere has been observed with the Space Telescope Imaging Spectrograph (STIS) since 1997 and more recently with the Advanced Camera for Surveys (ACS) on board HST. The observations cover a wide range of central meridian Jovian longitudes and Io orbital positions. Most images also exhibit a long trailing tail associated with Io's wake plasma. The brightness of the footprint shows variations by over an order of magnitude and appears to be controlled by the distance from Jupiter's central meridian and the longitude of Io. Multiple footprints are also occasionally observed with varying relative brightness and mutual distance. These features apparently correspond to precipitation generated by the reflection of Alfvèn waves between Jupiter's ionosphere and the plasma torus. Observations collected in 2005 with ACS have provided high quality contrasted images that provide a direct indication of the altitude of the trailing tail and its orientation. [less ▲]

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See detailLes femmes cadres expatriées : une espèce rare !
Cornet, Annie ULg

Conference (2005, August)

Detailed reference viewed: 30 (1 ULg)
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See detailOn the detection of influential subsets of categories in goodness of fit testing
Magis, David ULg

Conference (2005, August)

Detailed reference viewed: 4 (2 ULg)
See detailSaturn's aurora: morphology, dynamics and energetics
Gérard, Jean-Claude ULg; Grodent, Denis ULg

Conference (2005, August)

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See detailMemory in contracts. The experience of the EBRD (1991-2003)
Artige, Lionel ULg; Nicolini, Rosella

Conference (2005, August)

Detailed reference viewed: 8 (0 ULg)
See detailCassini ultraviolet imaging spectrograph observations of Saturn's auroras
Pryor, W. R.; West, R.; Stewart, A. I. F. et al

Conference (2005, August)

Detailed reference viewed: 2 (0 ULg)
See detailLiterature and Reconciliation in Australia
Delrez, Marc ULg

Conference (2005, July 20)

Detailed reference viewed: 6 (1 ULg)
See detailLanguage and Characterization in Chimamanda Ngozi Adichie's Purple Hibiscus
Tunca, Daria ULg

Conference (2005, July 13)

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See detailLa Justice réparatrice en France et en Belgique : une innovation dans le champ pénal ?
Dubois, Christophe ULg

Conference (2005, July 13)

A partir de deux ensembles d’initiatives qualifiées de « réparatrices » (essentiellement la réparation en milieu carcéral en Belgique et la réparation pénale chez les mineurs en France), nous proposons ... [more ▼]

A partir de deux ensembles d’initiatives qualifiées de « réparatrices » (essentiellement la réparation en milieu carcéral en Belgique et la réparation pénale chez les mineurs en France), nous proposons d’analyser les dernières recompositions de l’activité pénale en Belgique et en France. L’histoire du système pénal illustre l’impact des controverses qui l’entourent ainsi que le retentissement de thèmes contemporains (responsabilisation, incitation, accompagnement, procéduralisation…) sur les pratiques de ses divers intervenants. De nouveaux modes de régulations –normative, stratégique, identitaire- apparaissent et opèrent sur un ton neuf. Ce ton n’est plus celui du supplice, de l’enfermement ou du traitement, mais bien celui de la responsabilisation d’un individu fautif, capable de réparer son erreur. En outre, ces modes de régulation obéissent à des mécanismes qu’ils contribuent à produire. Quelle est la nature de leurs logiques ? Sont-elles compatibles ? Annoncent-elles la naissance d’un nouveau paradigme ? Que nous apprennent-elles quant à la légitimité de la violence (la peine) infligée par l’Etat ? [less ▲]

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See detailCross-cultural "Nigerian" Writers
Tunca, Daria ULg

Conference (2005, July 01)

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See detailInfluence of the resonator damping on its coupling with a slot-tone
Glesser, Martin; Billon, Alexis ULg; Valeau, Vincent et al

Conference (2005, July)

In ventilation systems, disturbing whistlings can occur at outlets. This whistling phenomenon belongs to the self-sustained tones class which can be produced when a low velocity flow impinges on a ... [more ▼]

In ventilation systems, disturbing whistlings can occur at outlets. This whistling phenomenon belongs to the self-sustained tones class which can be produced when a low velocity flow impinges on a downstream obstacle. The coupling of the tones with acoustic resonances (so-called indirect feedback path) can promote high-level harmonic noises. This experimental study deals with the coupling of a jet-slot oscillator, modelling a ventilation outlet, with the flow supply duct resonances. The flow supply duct is damped by using various amounts of acoustic damping foam, and the effect of this damping on the sound production is studied. It is shown that for a jet exit/obstacle distance higher than 2.5 jet height (L/H>2.5), the tone’s frequency matches satisfactorily with frequencies predicted by a model describing favourable phase relationships for the occurrence of tones along the feedback loop. When the flow supply duct is resonant, it is noticeable that the tone’s frequency occurs at a duct resonance frequency which is close to the frequency described by this model. For lower values of L/H (slot closer to the jet exit), a better knowledge of the convection velocity behaviour along the vortices path could improve the tone’s frequency prediction. The use of damping foam within the flow supply duct prevents the occurrence of the tones’ coupling with a duct resonance, especially with high amounts of damping material, and dramatically reduces the emitted acoustic levels. For moderate amounts of damping material, the suppression of coupling occurs only for higher flow speeds, as the tone’s frequencies are higher and the damping material is then more efficient. [less ▲]

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See detailSurface effects of active folding, illustrated with examples from the TianShan
Hubert, Aurelia ULg; Suppe, J; Gonzalez-Mieres, J. et al

Conference (2005, July)

Detailed reference viewed: 8 (1 ULg)
Peer Reviewed
See detailGender budgeting
Cornet, Annie ULg; Cecchini, Isabelle ULg

Conference (2005, July)

Detailed reference viewed: 22 (2 ULg)
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See detailValidation of a numerical diffusion equation-based modelling of the reverberated sound field in long rooms
Foy, Cédric; Billon, Alexis ULg; Valeau, Vincent et al

Conference (2005, July)

Many applications as corridors, railways tunnels or tube stations present a long room geometry. A fast and reliable modelling of such sound fields could be helpful for designers. In fact, the classical ... [more ▼]

Many applications as corridors, railways tunnels or tube stations present a long room geometry. A fast and reliable modelling of such sound fields could be helpful for designers. In fact, the classical statistical theory based on the assumptions of diffuse sound field is not applicable in such cases because the reverberant sound energy along the room is not uniform. In this study, several models assuming diffuse reflections of sound by walls are used for predicting the reverberant sound field in long rooms. Two models based on a diffusion equation for the energy density (one numerical and one analytical based on an image approach for describing the sound reflection at the corridor extremity) are compared with a radiosity model, and with a ray tracing software. Predictions are compared in terms of sound attenuation and reverberation time with measured data. The long rooms considered in this study were two rectangular corridors of lengths 20.3m and 47.3m. All models overestimate the attenuation, reaching 6dB for the numerical diffusion based model. When a part of specular reflection (30%) is added in the ray tracing model, the predicted sound attenuation matches with the measured one: even in case of rough surfaces, specular reflections cannot be totally excluded. For reverberation time, the agreement between predictions and experiments is good with fewer than 15% of discrepancy. The best predictions of the reverberation time were given by the diffusion models, with discrepancy less than 2% for the numerical model. So, it could be concluded that it is difficult to find a prediction method which is consistent both in terms of steady state and sound decay for the acoustics of long halls. [less ▲]

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See detailThe Digital Soil Map of Wallonia (Southern Belgium). A tool for better soil management
Bah, Boubacar Billo ULg; Veron, Philippe; Bracke, Charles et al

Conference (2005, July)

Detailed reference viewed: 34 (9 ULg)
Peer Reviewed
See detail"'Saint Nicolas et les enfants au saloir: a Pseudo-Popular Gem of the Traditional Repertoire?"
Peere, Isabelle ULg

Conference (2005, July)

A tentative reassessment of the traditional character of Gérard de Nerval's record of the famous song in the light of earlier records of the song in French and European tradition from the medieval ... [more ▼]

A tentative reassessment of the traditional character of Gérard de Nerval's record of the famous song in the light of earlier records of the song in French and European tradition from the medieval tradition to the present [less ▲]

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See detailThe status of imams in Europe
Husson, Jean-François ULg

Conference (2005, June 29)

In relation to various researches I had carried out for the King Baudouin Foundation on possible developments regarding imams training in Belgium, EPC and KBF have set up this international conference ... [more ▼]

In relation to various researches I had carried out for the King Baudouin Foundation on possible developments regarding imams training in Belgium, EPC and KBF have set up this international conference with European academics and policy makers to broaden the debate and discuss various national situations. [less ▲]

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See detailBiogeocehmical study of a coccolithophore bloom at the continental margin in the Northeast Atlantic
Harlay, Jérôme ULg; van der Zee, Claar; Schiettecatte, Laure-Sophie et al

Conference (2005, June 14)

Coccolithophores, among which Emiliania huxleyi (Ehux) is the most abundant and widespread species, are the dominant calcifying phytoplankton in the temperate zone of the world’s oceans. The continental ... [more ▼]

Coccolithophores, among which Emiliania huxleyi (Ehux) is the most abundant and widespread species, are the dominant calcifying phytoplankton in the temperate zone of the world’s oceans. The continental margin in the Northern Bay of Biscay (North Atlantic Ocean) was visited in June 2004 during a multidisciplinary investigation of a late-spring bloom dominated by Ehux. Field sampling was assisted by daily transmission to the RV Belgica of remote sensing images, indicating the bloom development in the area. Primary production and calcification were measured by 14C incubations and zooplankton grazing experiments were performed. Vertical distributions of transparent exopolymer (TEP) concentration and bacterial density, as well as the bacterial production in surface waters, were also determined to elucidate the fate of biogenic carbonate production. The organic and inorganic carbon fluxes are evaluated in terms of relevant processes and discussed in relation with the DIC and nutrient dynamics. [less ▲]

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See detailEcriture et travail sur soi chez Sartre
Cormann, Grégory ULg

Conference (2005, June 09)

Detailed reference viewed: 2 (0 ULg)
Peer Reviewed
See detailMaladie d'Alzheimer: Prise en charge cognitive des troubles de la mémoire
Adam, Stéphane ULg

Conference (2005, June 09)

Detailed reference viewed: 4 (0 ULg)
See detailFullerene containing (co)polymers for biomedical applications
Stoilova, Olya; Detrembleur, Christophe ULg; Jérôme, Christine ULg et al

Conference (2005, June 01)

Detailed reference viewed: 15 (2 ULg)
See detailCombination of electrografting with controlled polymerization: building of anti-bacterial surfaces
Voccia, Samuel; Ignatova, Miléna; Gilbert, Bernard ULg et al

Conference (2005, June 01)

Detailed reference viewed: 11 (2 ULg)
See detailFunctionlization of biodegradable aliphatic polyesters by mannose-residue for the design of surface-modified polymeric nanoparticles
Rieger, Jutta ULg; Stoffelbach, François; Stoilova, Olya et al

Conference (2005, June 01)

Detailed reference viewed: 10 (2 ULg)
See detailElectrografting of poly(ethylene glycol) acrylate: a novel one-step strategy for protein repellent surfaces
Gabriel, Sabine ULg; Dubruel, P.; Schacht, Etienne et al

Conference (2005, June 01)

Detailed reference viewed: 11 (4 ULg)
See detailATRP of aminated methacrylates: a route to effective antimicrobial surfactants, coatings and additives
Lenoir, Sandrine; Pagnoulle, Christophe; Detrembleur, Christophe ULg et al

Conference (2005, June 01)

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See detailExamination of the non-palpable cryptorchid testis
Waltregny, David ULg

Conference (2005, June)

La cryptorchidie affecre environ 1 garçon sur 150 et dans près de 20% des cas, la gonade n'est pas palpée. Lorsqu'il est présent, le testicule non palpable est situé entre l'orifice externe du canal ... [more ▼]

La cryptorchidie affecre environ 1 garçon sur 150 et dans près de 20% des cas, la gonade n'est pas palpée. Lorsqu'il est présent, le testicule non palpable est situé entre l'orifice externe du canal inguinal et le pôle inférieur du rein. Souvent cependant, lors de l'exploration chirurgicale, on constate l'existence de reliquats tissulaires à l'extrémité de vaisseaux spermatiques borgnes sans que l'on puisse reconnaître à proprement parler un testicule: on parle alors de testicule absent. Dans d'autres cas, on ne trouve pas de trace de vaisseau spermatique, de structure épidydimo-déférentielle ou encore de tissu testiculaire; il s'agit d'agénésie gonadique. Le testicule non palpé présente un risque accru d'infertilité, de transformation maliine, de hernies et malformations épididymo-déférentielles associées. Le traitement chirurgical est souvent plus complexe et les échecs plus fréquents. De nombreuses techniques d'imagerie ont été proposées comme modalités diagnostiques pour localiser le/les testicule(s) non palpé(s) (pneumopéritonéographie, angiographie, ultrasonographie, tomodensitométrie computérisée, RMN) mais aucune d'elles, à ce jour, n'est uniformément acceptée en raison du manque de fiabilité à détecter le testicule recherché et/ou des dangers potentiels résultant de leur emploi. Depuis la description par Cortesi en 1976 de l'utilisation de la cælioscopie pour la localisation du testicule impalpable, un intérêt croissant a été porté par les urologues et les chirurgiens pédiatriques à cette technique qui aujourd'hui joue un rôle central dans l'exploration du testicule cryptorchide non palpé. Les auteurs tentent d'établir une méthodologie algorythmique d'investigation des testicules cryptorchides non palpés à la lumière des données anatomiques, pathologiques et chirurgicales récentes de la littérature. [less ▲]

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See detailComparison of the Huygens mission and the SM2 test flight for Huygens attitude reconstruction
Sarlette, Alain ULg; Perez-Ayucar, Miguel; Witasse, Olivier et al

Conference (2005, June)

The Huygens probe is the ESA’s main contribution to the Cassini/Huygens mission, carried out jointly by NASA, ESA and ASI. It was designed to descend into the atmosphere of Titan on January 14, 2005 ... [more ▼]

The Huygens probe is the ESA’s main contribution to the Cassini/Huygens mission, carried out jointly by NASA, ESA and ASI. It was designed to descend into the atmosphere of Titan on January 14, 2005, providing surface images and scientific data to study the ground and the atmosphere of Saturn’s largest moon. In the framework of the reconstruction of the probe’s motions during the descent based on the engineering data, additional information was needed to investigate the attitude and an anomaly in the spin direction. Two years before the launch of the Cassini/Huygens spacecraft, in May 1995, a test probe called SM2 (Special Model 2) was dropped in the Earth’s atmosphere from the balloon launch site of Kiruna, Sweden, to verify proper operation during the descent and especially the parachute deployment sequence. It featured a flight standard structure and DCSS (Descent Control SubSystem) and, unlike the Huygens probe, was fully instrumented to monitor the orientation of the descent module (3-axes accelerometers and gyroscopes). We describe how a comparison between the SM2 test flight and the Huygens mission provides some useful information about the Huygens probe’s behavior. After discussing the spin direction, we focus on the tip and tilt. The final conclusions of this comparison at the time of writing are still of qualitative nature, but the results are a starting point for better interpretation of the engineering data in terms of attitude to derive the probe’s orientation. [less ▲]

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See detailUne position d'expert: "grand ensemblier"
Semal, Nathalie ULg

Conference (2005, June)

La mise en oeuvre de la norme ISO 14001 ne constitue pas un face à face entre le texte normatif et son usager, l'entreprise. Elle est le plus souvent accompagnée par des experts du conseil en management ... [more ▼]

La mise en oeuvre de la norme ISO 14001 ne constitue pas un face à face entre le texte normatif et son usager, l'entreprise. Elle est le plus souvent accompagnée par des experts du conseil en management environnemental, qui définissent leur position comme celle d'un "grand ensemblier". L'objectif de la communication est d'explorer cette métaphore. Leurs modes d'intervention contribue à insérer la démarche de l'entreprise dans un réseau de relations multiples et hétérogènes. [less ▲]

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See detailAnalyse des causes d'incidents et d'accidents
Nyssen, Anne-Sophie ULg

Conference (2005, June)

Detailed reference viewed: 24 (2 ULg)
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Peer Reviewed
See detailHuygens attitude reconstruction based on flight engineering parameters
Perez-Ayucar, Miguel; Sarlette, Alain ULg; Couzin, Patrice et al

Conference (2005, June)

Huygens is ESA’s main contribution to the joint NASA/ESA/ASI Cassini/Huygens mission to Saturn and its largest moon Titan. The Probe, delivered to the interface altitude of 1270 km above the surface by ... [more ▼]

Huygens is ESA’s main contribution to the joint NASA/ESA/ASI Cassini/Huygens mission to Saturn and its largest moon Titan. The Probe, delivered to the interface altitude of 1270 km above the surface by NASA/JPL Cassini orbiter, entered the dense atmosphere of Titan on 14 January 2005 and landed on the surface after a descent under parachute of slightly less than 2.5 hours. Huygens continued to function after landing for more than 3 hours. Data was transmitted and successfully recovered by Cassini continuously during the parachute descent and for 72 minutes on the surface. Although the Huygens attitude reconstruction based on the flight engineering parameters was not foreseen during the development phase (no gyros were included), a rough descent under parachute and indications of an anomaly in the probe spin direction make the engineering dataset valuable in the frame of the ADRS (Huygens Attitude Determination and Reconstruction Subgroup) as a complement to the scientific measurements. In addition, several scientific teams have a strong interest in understanding the orientation of the probe for interpreting their data, as DISR (Descent Imager and Spectral Radiometer) and HASI-PWA (Huygens Atmospheric Structure Instrument-Permeability, Wave and Altimetry). In this paper we describe the engineering parameters used for the Probe attitude reconstruction (Clausen et al., 2002), namely the radio link AGC (Automatic Gain Control), RASU and CASU (Radial and Central Accelerometer Sensor Units) and RAU (Radar Altimeter Unit). We explain the methodology applied to indirectly infer the attitude information from the measurements of these sensors. We also discuss and present the reconstructed information related to attitude: spin rate and azimuthal position (during the atmospheric descent), and landing orientation. Tip and tilt implications are still being worked at the time of writing. Preliminary data on their behavior is presented. [less ▲]

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See detailMoems Packaging for Harsh environments
Loicq, Jerôme ULg

Conference (2005, May 31)

Detailed reference viewed: 6 (0 ULg)
See detailLes marqueurs cardiaques dans les syndromes coronariens aigus
Chapelle, Jean-Paul ULg

Conference (2005, May 31)

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See detailLes idéalisations constitutives de l'objectivité mathématique
Leclercq, Bruno ULg

Conference (2005, May 28)

Detailed reference viewed: 14 (0 ULg)
Peer Reviewed
See detailTowards Settler Autoethnography: Nicholas Jose's Travel Narrative
Delrez, Marc ULg

Conference (2005, May 28)

Detailed reference viewed: 3 (0 ULg)
Peer Reviewed
See detailImpact of depth perception and movement freedom on performance in fine surgical tasks
Blavier, Adelaïde ULg; Nyssen, Anne-Sophie ULg

Conference (2005, May 27)

This study aimed to evaluate the impact of new technology and depth perception on surgical tasks performance. Comparing to classical minimal access surgery, new robotic system allows to recover a 3D view ... [more ▼]

This study aimed to evaluate the impact of new technology and depth perception on surgical tasks performance. Comparing to classical minimal access surgery, new robotic system allows to recover a 3D view and all degrees of freedom for instruments movement. To separately evaluate the benefit of robotic technology and the effect of depth perception, 60 medical students without any surgical experience were divided in 3 groups: one using the robotic system in 3D, another using robotic system in 2D, and the third using traditional laparoscopic technique (2D view). After a phase of familiarisation with the technique of their condition, subjects performed four specific fine motor tasks of increasing complexity. We measured the speed, the accuracy and their subjective impressions about their performance (satisfaction, self-confidence and difficulty). Our results show robotic system in 3D allows a better performance than classical laparoscopy in all tasks. More particularly, depth perception significantly improves performance in the easiest tasks (robotic system in 3D > robotic system in 2D and classical laparoscopy), while freedom for instruments movement seems to play a role in the most complex tasks (robotic system (2D or 3D) > classical laparoscopy). The subjective impressions analysis reproduces the differences observed from objective measures. [less ▲]

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See detailThe effect of youth employment quotas on the job finding rates of young people in Wallonia
Fonder, Muriel; Lejeune, Bernard ULg

Conference (2005, May 26)

In april 2000, the Belgian federal government launched a special labor market program, whose prominent characteristic was the obligation for companies to occupy in their labor force a certain quota of ... [more ▼]

In april 2000, the Belgian federal government launched a special labor market program, whose prominent characteristic was the obligation for companies to occupy in their labor force a certain quota of young people. Based on a sample of more 100,000 young Walloon job seekers (Wallonia is the French-speaking region of Belgium), the aim of this paper is to evaluate whether or not this program has really improved the youth insertion in the labour market, compared to what would have prevailed in the absence of the program. The effect of the program is evaluated through discrete duration models, and estimated by ‘difference in differences’, looking at the individual trajectory on the labor market of young job seekers, before and after the setting up of the program, for the program target group and for a control group. The empirical results show that the program had a modest positive effect for mid-skilled job seekers, but very little effect for unskilled job seekers. On the other hand, as it could be expected, a strong deadweight effect is observed for the skilled young job seekers. [less ▲]

Detailed reference viewed: 51 (5 ULg)