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See detailMécanismes de résistance des bactéries aux antibiotiques
Mainil, Jacques ULg

Conference (2010)

Detailed reference viewed: 7 (0 ULg)
See detailSozialrechtliche Aspekte der Staatenlosigkeit
Thevissen, Patrick ULg

Conference (2010)

Detailed reference viewed: 11 (0 ULg)
See detailRohstoffwandel als Herausforderung f�r die Verfahrenstechnik
Fayyaz, Sara; Hillerbrand, Rafaela; Pfennig, Andreas ULg

Conference (2010)

See detailAffective valence and false memoires in Aging
Dehon, Hedwige ULg; laroi, Frank; van der Linden, Martial

Conference (2010)

Detailed reference viewed: 12 (0 ULg)
See detailLe développement durable: un concept incontournable
Stassart, Pierre M ULg

Conference (2010)

Detailed reference viewed: 25 (2 ULg)
See detailIntermittent thermal manipulations of broiler embryos during late incubation and their immediate and long-lasting effects
Willemsen, Hilke; Li, Yue; Witters, Anouck et al

Conference (2010)

Detailed reference viewed: 11 (0 ULg)
See detailManipulating tissue metabolism by amino acids
Tesseraud, S.; Everaert, Nadia ULg; Boussaid-Om Ezzine, S. et al

Conference (2010)

Detailed reference viewed: 12 (0 ULg)
Peer Reviewed
See detailOn the origin of Planosols – the process of ferrolysis revisited
Van Ranst, Eric; Cornelis, Jean-Thomas ULg; Dumon, Mathijs et al

Conference (2010)

Abstract : Planosols have been recognized as a Major Soil Group right from the beginning in the legend of the FAO Soil Map of the World. Also in WRB system it maintained that position at Reference Soil ... [more ▼]

Abstract : Planosols have been recognized as a Major Soil Group right from the beginning in the legend of the FAO Soil Map of the World. Also in WRB system it maintained that position at Reference Soil Group level on the account that a major pedogenetic process, ferrolysis, is underlaying the severe stagnic properties that characterize this group. With the recent introduction of Stagnosols in WRB it appears that a serious overlap has been introduced at Reference Soil Group level. This paper aims to throw new light on the genesis of Planosols, drawing from new soil surveys conducted in the south-western Ethiopian highlands. The conclusion is that it is highly unlikely that ‘ferrolysis’ can be called in to explain the genesis of Planosols in the Ethiopian highlands. As Ethiopia is one of the mainstays of Planosols, it is suggested that WRB rethinks its strategy on soils with stagnic properties as there is room for rationalization. [less ▲]

Detailed reference viewed: 6 (0 ULg)
See detailUnit Operations simulated on the molecular level
Pereira Neto, A; Babic, D; Pfennig, Andreas ULg

Conference (2010)

Peer Reviewed
See detailProcess mineralogy and automated phase identification in mixed copper ores at Kansanshi (Zambia)
Kottgen; Bastin, David ULg; Dufrane, Florent et al

Conference (2010)

Detailed reference viewed: 16 (0 ULg)
Peer Reviewed
See detailWorkshop: «Binominal syntagms as a neglected locus of synchronic variation and diachronic change: Towards a unified approach
Brems, Lieselotte ULg; De Clerck, Bernard; Verveckken, Katrien

Conference (2010)

Detailed reference viewed: 9 (1 ULg)
Peer Reviewed
See detailTNFR-induced activation of MAP3K14/NIK enhances TNFR1-induced cell death
Boutafalla, Layla; Bertrand, Mathieu; Remouchamps, Caroline ULg et al

Conference (2010)

Detailed reference viewed: 31 (6 ULg)
Peer Reviewed
See detailComparison of two physiognomies of rupestrian fields occurring along a soil gradient
Le Stradic, Soizig ULg; Buisson, Elise; Fernandes, Geraldo Wilson

Conference (2010)

Detailed reference viewed: 12 (0 ULg)
See detailLes traces de vie au Précambrien et la fossilisation
Javaux, Emmanuelle ULg

Conference (2010)

Detailed reference viewed: 33 (2 ULg)
See detailVanadium oxide-based mesoporous films as positive electrode material in Li-ion batteries
Krins, Natacha ULg; Caes, Sébastien ULg; Arrebola, José-Carlos et al

Conference (2010)

Detailed reference viewed: 10 (3 ULg)
See detailGestion de la diversité, pourquoi et pour qui ?
Cornet, Annie ULg

Conference (2010)

Detailed reference viewed: 17 (2 ULg)
Peer Reviewed
See detailTrade Union implication in the sustainable development:global position and contingent situations
Robert, Jocelyne ULg

Conference (2010)

This article presents Sustainibility Development in relation to the Social responsibility. In this context we analyze relationship between trade-unions and sustainable development in Belgium. Which ... [more ▼]

This article presents Sustainibility Development in relation to the Social responsibility. In this context we analyze relationship between trade-unions and sustainable development in Belgium. Which involvement of th trade-unions in environment protection, work quality and benefit notion. Which actors and relations between the actors? Wich obstacles during the appropriation of the sustainable development by the trade-unions. [less ▲]

Detailed reference viewed: 48 (25 ULg)
See detail"Giant Planets Aurorae" - Europlanet RI Science Case in the Working Packages
Rucker, M Scherf H O; Blanc, M.; André, N. et al

Conference (2010)

Not Available

Detailed reference viewed: 6 (0 ULg)
Peer Reviewed
See detailEtudier à l'université : le poids des pairs et du capital culturel face aux aspirations d'étude
Dupriez, Vincent; Van Campenhoudt, Maud; Monseur, Christian ULg et al

Conference (2010)

Detailed reference viewed: 3 (0 ULg)
See detailSubspace-based Methods for Machinery Analysis and Monitoring
Nguyen, Viet Ha ULg; Rutten, Christophe ULg; Golinval, Jean-Claude ULg

Conference (2010)

The objective of this presentation is to address the problem of structural damage detection or fault diagnosis in mechanical systems using subspace-based methods. Different methods are reviewed starting ... [more ▼]

The objective of this presentation is to address the problem of structural damage detection or fault diagnosis in mechanical systems using subspace-based methods. Different methods are reviewed starting from Principal Component Analysis (PCA) also known as Proper Orthogonal Decomposition (POD) of time responses. PCA is known as an efficient method for extracting modal features of linear structures from output-only measurements. Those features define a subspace which characterizes the dynamical behavior of the structure. It becomes than possible to detect structural damage by comparing a reference subspace (obtained from the healthy structure) with current subspaces on the basis of the concept of angles between subspaces. Other damage indexes based on statistics may also be used. One of the drawbacks of PCA is the need of several sensors. If the number of sensors is too small, modal identification and/or damage detection may not be performed in good conditions using PCA. An alternative PCA-based method named Null Subspace Analysis (NSA) may then be used. The NSA method generates data by means of block Hankel matrices and is proven to be efficient when the number of available sensors is small or even reduced to one sensor only. However, when damage activates nonlinearity, the detection problem may necessitate methods which are more sensitive to nonlinear behaviors. To this purpose, Kernel Principal Component Analysis (KPCA) is a nonlinear extension of PCA built to authorize features with nonlinear dependence between variables. The method is “flexible” in the sense that different kernel functions may be used to better fit the testing data. Industrial applications are presented to illustrate the proposed methods. [less ▲]

Detailed reference viewed: 31 (0 ULg)
Peer Reviewed
See detailImplementation of micropollutant fate in wastewater treatment plant benchmark simulation models
Pons, Marie-Noëlle; Louvet, Jean-Noël ULg; Potier, Olivier

Conference (2010)

Detailed reference viewed: 26 (1 ULg)
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See detailInfluence of the viscosity on liquid hold-up in modular catalytic packings
Aferka, Saïd ULg; Viva, Aurora ULg; Brunazzi, Elisabetta et al

Conference (2010)

Detailed reference viewed: 27 (3 ULg)
See detailLes concepts de l'égalité et de la diversité
Cornet, Annie ULg

Conference (2010)

Detailed reference viewed: 26 (2 ULg)
Peer Reviewed
See detailUnlock sytemic locking? From conversion towards transition
Stassart, Pierre M ULg

Conference (2010)

The potential sectoral (food chain) transition approach suffers from a strong regimen’s irreversibility. In this paper we consider the question of cooperation regime transformation. Indeed in our case ... [more ▼]

The potential sectoral (food chain) transition approach suffers from a strong regimen’s irreversibility. In this paper we consider the question of cooperation regime transformation. Indeed in our case, the lock-in issue also proved to have a professional dimension linked to the cooperation regime. While the “filière” quality convention (Gomez 1994) could re-frame the traditional relationships between different members of the “filière,” this potential transformation was blocked by the strongest professional/sectoral convention. Professional conventions (Allaire 2004) are competency conventions that define and qualify “good” work within a set of rules. Professional conventions may be destabilized by transforming legitimacy systems through a territorial (rather than sectoral) approach and as a consequence start to overcome the socio-technical lock-in. Interactions between weak pressure at the landscape (macro) level (EU), niche (micro) level, and knowledge coming from the previous intervention research created space for regime destabilization (Geels & Schot 2007b). Local stakeholders (institutions) joined with local actors (consumers-citizens, and naturalists) to create room for a learning process and let the “Gaume Grassland Steer” niche experiment emerge. [less ▲]

Detailed reference viewed: 18 (0 ULg)
Peer Reviewed
See detailConvergent evolution for sound production with a putative slow muscle in a Perciform fish Glaucosoma buergeri (Glaucosomatidae)
Mok, Hin-Kiu; Tsai, Kai-En; Chiu, Pai-Ho et al

Conference (2010)

Detailed reference viewed: 11 (0 ULg)
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Peer Reviewed
See detailMisery Loves Company : Beauty Contest Dynamics in Exchange Rate Expectations
Muller, Aline ULg; Pancotto, Francesca ULg

Conference (2009, December 18)

Detailed reference viewed: 72 (15 ULg)
See detailRegional analgesia
Brichant, Jean-François ULg

Conference (2009, December 18)

Detailed reference viewed: 12 (2 ULg)
See detailLa déontologie de l'information
Vanesse, Marc ULg

Conference (2009, December 17)

Journée de réflexion sur la déontologie de l'information avec plusieurs intervenants : un juge d'instruction, un journaliste d'investigation, le secrétaire général de l'Association des journalistes ... [more ▼]

Journée de réflexion sur la déontologie de l'information avec plusieurs intervenants : un juge d'instruction, un journaliste d'investigation, le secrétaire général de l'Association des journalistes professionnels, l'auteur d'une recherche sur la caméra cachée. [less ▲]

Detailed reference viewed: 46 (10 ULg)
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See detailLaboratoire et allergologie : nouvelles applications
Gadisseur, Romy ULg; Cavalier, Etienne ULg

Conference (2009, December 17)

Detailed reference viewed: 15 (0 ULg)
See detailImages et inscriptions: la représentation de la guerre selon Harun Farocki
Hamers, Jérémy ULg

Conference (2009, December 16)

Detailed reference viewed: 15 (0 ULg)
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Peer Reviewed
See detailMisery loves company beauty contest dynamics in exchange rates expectations
Muller, Aline ULg; Pancotto, Francesca

Conference (2009, December 16)

Detailed reference viewed: 7 (0 ULg)
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See detailLes norovirus: nouveaux agents entéropathogènes.
HUYNEN, Pascale ULg; Mathijs, Elisabeth

Conference (2009, December 15)

Detailed reference viewed: 18 (0 ULg)
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See detailPrediction of genetic interactions in yeast using machine learning
Schrynemackers, Marie ULg

Conference (2009, December 14)

Detailed reference viewed: 10 (3 ULg)
See detailThe Spatial Morphology of Equatorial Electron Beams Near Io
Jacobsen, S.; Saur, J. S.; Neubauer, F. M. et al

Conference (2009, December 14)

The Galileo spacecraft observed energetic field-aligned electron beams very close to Io during several flybys. We apply a three-dimensional magnetohydrodynamic (MHD) model of the far-field Io-Jupiter ... [more ▼]

The Galileo spacecraft observed energetic field-aligned electron beams very close to Io during several flybys. We apply a three-dimensional magnetohydrodynamic (MHD) model of the far-field Io-Jupiter interaction to simulate for the first time the location and spatial shape of field-aligned electron beams. Io continuously generates MHD waves by disturbing the Jovian magnetoplasma. Currents carried by Alfvén waves propagate predominantly along the magnetic field lines. As the number of charge carriers decreases along the travelpath, electrons are accelerated towards Jupiter. These energetic electrons precipitate into the Jovian ionosphere, visible as prominent Io footprint (IFP) emission. Electrons are also accelerated towards Io and form the equatorial beams observed by the Galileo spacecraft. Unlike the beam formation, the position and spatial structure of these beams has not been addressed in detail before. We use a 3D MHD model with initial conditions corresponding to the individual Galileo flyby and determine the spatial morphology of the beams in Io's orbital plane. Our results are in good agreement with the Galileo observations. We find that the ratio of the one-way traveltime of the Alfvén wave from Io to Jupiter and the convection time of the plasma past the obstacle controls the location of the beams. This leads to the conclusion that at other satellites with other plasma environments, e.g. Ganymede, Callisto, Europa and Enceladus, the electron beams might not be close to the satellite, but can be shifted significantly downstream along its plasma wake. Thus, the future search for field-aligned electron populations near a satellite should be further extended to the wake region. [less ▲]

Detailed reference viewed: 12 (2 ULg)
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See detailElastofibrome dorsal
TOMASELLA, Marco ULg

Conference (2009, December 14)

Detailed reference viewed: 7 (0 ULg)
See detailSummary of aim and achievements in Work Package 7 "Functional Coatings"
Jérôme, Christine ULg

Conference (2009, December 14)

Detailed reference viewed: 11 (3 ULg)
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See detailResistencia desquiciada en El ejército iluminado de David Toscana
Vanden Berghe, Kristine ULg

Conference (2009, December 13)

Detailed reference viewed: 32 (4 ULg)
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Peer Reviewed
See detailTree based ensemble models regularization by convex optimization
Cornélusse, Bertrand ULg; Geurts, Pierre ULg; Wehenkel, Louis ULg

Conference (2009, December 12)

Tree based ensemble methods can be seen as a way to learn a kernel from a sample of input-output pairs. This paper proposes a regularization framework to incorporate non-standard information not used in ... [more ▼]

Tree based ensemble methods can be seen as a way to learn a kernel from a sample of input-output pairs. This paper proposes a regularization framework to incorporate non-standard information not used in the kernel learning algorithm, so as to take advantage of incomplete information about output values and/or of some prior information about the problem at hand. To this end a generic convex optimization problem is formulated which is first customized into a manifold regularization approach for semi-supervised learning, then as a way to exploit censored output values, and finally as a generic way to exploit prior information about the problem. [less ▲]

Detailed reference viewed: 134 (41 ULg)
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See detailLaboratoire et allergologie : nouvelles applications
Gadisseur, Romy ULg; Cavalier, Etienne ULg

Conference (2009, December 11)

Detailed reference viewed: 14 (1 ULg)
See detailCommencer par la fin. La radicalité dans le théâtre du Groupov
Delhalle, Nancy ULg

Conference (2009, December 11)

Detailed reference viewed: 30 (3 ULg)
Peer Reviewed
See detailNavigating Polyfunctionality in the Lexicon
Grossman, Eitan; Polis, Stéphane ULg

Conference (2009, December 10)

Detailed reference viewed: 10 (1 ULg)
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See detailForeseeing nitrate concentration in groundwater: A review of available modelling approaches
Orban, Philippe ULg; Brouyère, Serge ULg

Conference (2009, December 10)

In the scientific community, increasing concerns on groundwater quality and quantity have motivated the development of numerical models for groundwater management since the 1970’s. Mathematical and ... [more ▼]

In the scientific community, increasing concerns on groundwater quality and quantity have motivated the development of numerical models for groundwater management since the 1970’s. Mathematical and numerical models are, for example, promising tools for prediction of concentration and they can be used to make the dynamic link between nitrogen manure and the resulting evolution of nitrate concentration in groundwater. However, from a practical and managerial perspective, there have been very few real attempts of developing efficient calibrated and validated transport models in particular at the scale of the groundwater body, which is the management unit of groundwater resource in the European Union. Actually two main challenges remains, (1) performing numerical tools are not really available and (2) parametrisation of such transport models at the regional scale is difficult due to the large amount of data required. Generally speaking models can be grouped in different categories ranging from black box models to physically based distributed models. The black box models such as transfer function are simple but attractive because they require relatively less data but with the drawback that modelling result are not spatially distributed while the predictive capability of these models is questionable due to the semi-analytical nature of the process descriptions. On the contrary, physically based distributed model require more data but, due to a more advanced description of ongoing processes, such models are expected to have better predictive capabilities than the black box models. Black box model and physically based distributed model approaches have all proved their utilities and have all their justifications, advantages and disadvantages regarding the development of regional scale groundwater model. A new flexible methodology (the Hybrid Finite Element Mixing Cell method) has been developed that allows combining in a single model, and in a fully integrated way, different mathematical approaches of various complexities for groundwater in complex environment. This method has been implemented in the SUFTD, a finite element groundwater flow and solute transport numerical model. Combining on the one hand the use of a spatially distributed groundwater flow and solute transport model taking advantages of this Hybrid Finite Element Mixing Cell Approach method and on the other hand spatial datasets of tritium and nitrate contents, an illustration on the problem of nitrate trend assessment and forecasting for an important groundwater resource located in the Geer groundwater body (480 km²) in the Walloon Region of Belgium will be proposed. [less ▲]

Detailed reference viewed: 3 (2 ULg)
Peer Reviewed
See detailNeural correlates of personal goal processing when envisioning future events
D'Argembeau, Arnaud ULg

Conference (2009, December 10)

Detailed reference viewed: 9 (2 ULg)
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See detailEvolution des pratiques d'évaluation : le cas des sciences astrophysiques
Surdej, Jean ULg

Conference (2009, December 10)

Detailed reference viewed: 33 (15 ULg)
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See detailLa prédation
Sibony, Anne-Lise ULg

Conference (2009, December 09)

Detailed reference viewed: 45 (3 ULg)
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Peer Reviewed
See detailSurveillance en ligne d'une machine tournante par thermographie infrarouge
Leemans, Vincent ULg; Destain, Marie-France ULg

Conference (2009, December 07)

Des mesures par thermographie d'une machine tournante critique (ventilateur) sont réalisées en ligne pour évaluer la température d’organes, comme le moteur et les paliers. En conditions de fonctionnement ... [more ▼]

Des mesures par thermographie d'une machine tournante critique (ventilateur) sont réalisées en ligne pour évaluer la température d’organes, comme le moteur et les paliers. En conditions de fonctionnement normal, les températures montrent des variations importantes, caractérisées par un écart­-type de l’ordre de 5 °C. Elles sont liées aux variations de conditions climatiques et à l'apport de chaleur variable en fonction du processus de fabrication. Un modèle auto­récurrent avec grandeurs d'entrée (ARX) a permis d'éliminer ces variations. Le bruit sur la température corrigée est réduit à un degré Celsius, ce qui permet de mettre en évidence très tôt une dégradation au niveau des paliers principaux. Par contre, dans le cas présent, le moteur subit un encrassement et donc une augmentation de température en cours de fonctionnement qui masque l’existence d’une éventuelle détérioration. [less ▲]

Detailed reference viewed: 94 (14 ULg)
See detailDes forêts et campagnes à la ville : les animaux et leurs choix
Strivay, Lucienne ULg; Mougenot, Catherine ULg

Conference (2009, December 07)

Detailed reference viewed: 17 (3 ULg)
See detailJustice et politique dans l’exorde du discours de Lycurgue Contre Léocrate
Vanhaegendoren, Koen ULg

Conference (2009, December 07)

Detailed reference viewed: 20 (2 ULg)
See detailProblème des karsts en roches silicatées... lacunes d’observation et paradigme du karst
Willems, Luc ULg; Ek, Camille ULg; Rodet, Joël et al

Conference (2009, December 05)

Depuis le développement de la karstologie, la grande majorité des cavités prospectées l'ont été dans les roches carbonatées ou apparentées, réputées fort solubles. Partant de ce principe, les autres ... [more ▼]

Depuis le développement de la karstologie, la grande majorité des cavités prospectées l'ont été dans les roches carbonatées ou apparentées, réputées fort solubles. Partant de ce principe, les autres lithologies n'ont été à ce jour que partiellement investiguées puisque réputées peu ou pas solubles. Pourtant, depuis plusieurs siècles, des grottes et autres formes apparentées sont mentionnées notamment dans des grès, des granites ou les quartzites. Très rapidement, elles ont été catégorisées comme pseudokarst en se basant sur deux principes, le premier, la convergence de forme, le second, les processus physico-chimiques qui présideraient à leur formation seraient différents de ceux rencontrés dans les calcaires. L'évolution des recherches et des techniques de ces vingt dernières années ouvre de nouvelles perspectives sur une réalité karstique commune qui transcenderait les lithologies tant carbonatées que non carbonatées. Peu à peu, elle oblige les chercheurs à se repositionner quant à la notion de karst. [less ▲]

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See detailKarsts dans les gneiss - alvéoles géantes et micro-alvéoles dans la région de Milagres, état de Bahia, Brésil
Rodet, Joël; Willems, Luc ULg; Auler, Augusto

Conference (2009, December 05)

Detailed reference viewed: 15 (1 ULg)
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See detailPour une esthétique de la vérité: De Kant à Kant en passant par Bachelard
Pieron, Julien ULg

Conference (2009, December 04)

Detailed reference viewed: 18 (6 ULg)
See detailRéentraînement/reconditionnement et troubles cognitifs: les réserves cognitives
Adam, Stéphane ULg

Conference (2009, December 04)

Detailed reference viewed: 5 (1 ULg)
See detailThe neural basis of short-term memory and attention : neuropsychology and fMRI
Majerus, Steve ULg

Conference (2009, December 04)

Detailed reference viewed: 5 (0 ULg)
See detailAdding sound to movies: Historical trends and new challenges of 3D cinema
André, Cédric ULg; Embrechts, Jean-Jacques ULg; Verly, Jacques ULg

Conference (2009, December 03)

Very little research has been done so far in producing 3D sound and audio that are consistent with the 3D stereo video being viewed by the spectator. After a review of the currently used techniques for ... [more ▼]

Very little research has been done so far in producing 3D sound and audio that are consistent with the 3D stereo video being viewed by the spectator. After a review of the currently used techniques for theater sound reproduction, this talk presents new challenges of 3D cinema in terms of sound reproduction and analyse which known 3D audio techniques are able to tackle those challenges. [less ▲]

Detailed reference viewed: 157 (29 ULg)
See detailLes conditions générales en droit de la construction
Kohl, Benoît ULg; Salzburger, Romain ULg

Conference (2009, December 03)

Detailed reference viewed: 32 (7 ULg)
See detailMapping baseline soil content in pollutants in urbanized and industrialized areas in the Walloon region: development of a sampling methodology for the Pollusol 2 survey (SPAQuE)
Peirera, Benoit; Schneider, Arnaud; Titeux, Hugues et al

Conference (2009, December 02)

Detailed reference viewed: 24 (2 ULg)
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See detailSecretion and maturation of toxins in the venom duct of Conustextile
Dobson, Rowan ULg; Corbesier, Corine; Collodoro, Mike et al

Conference (2009, December 02)

Detailed reference viewed: 22 (6 ULg)
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See detailMapping of soil-sediment systems contaminations around a metal-ore smelter. The example of Cu in Lubumbashi (R.D. Congo)
Mpundu, Michel; Kaya Muyumba, Donato ULg; N'gongo, Michel et al

Conference (2009, December 02)

Detailed reference viewed: 44 (13 ULg)
Peer Reviewed
See detailAn initial investigation of the magnetosphere at a system level using auroral oval radius and ring current intensity as state variables
Milan, S. E.; Hutchinson, J.; Boakes, P. D. et al

Conference (2009, December 01)

One approach to understanding the magnetosphere at a system level is to select a number of magnetospheric state variables and to examine statistically their inter-relationships and the temporal evolution ... [more ▼]

One approach to understanding the magnetosphere at a system level is to select a number of magnetospheric state variables and to examine statistically their inter-relationships and the temporal evolution of the magnetosphere through state-space. This talk outlines a first attempt at such a study, using the radius of the auroral oval, a proxy for the open flux content of the magnetosphere, and the Sym-H index, a measure of the intensity of the ring current, as the primary state variables. Using observations from the two-year period June 2000 to May 2002, the response of the state of the magnetosphere to differing solar wind inputs, and the evolution of the system state during geomagnetic storms is investigated. Our main finding is a characteristic evolution of magnetospheric state through the initial, main, and recovery phases of geomagnetic storms. We discuss our findings within the context of the expanding/contracting polar cap paradigm, in terms of a modification of substorm onset conditions by the magnetic perturbation associated with the ring current. [less ▲]

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See detailContinuous Characterization of Growth Phase Using Ground Optical and Magnetic Data
Connors, M. G.; Lerner, R.; Fillingim, M. O. et al

Conference (2009, December 01)

The growth phase of substorms is characterized by equatorward motion of the auroral oval as manifested by optical emissions and the electrojet currents detected on the ground through magnetic ... [more ▼]

The growth phase of substorms is characterized by equatorward motion of the auroral oval as manifested by optical emissions and the electrojet currents detected on the ground through magnetic perturbations. We will demonstrate the use of an inversion procedure for magnetic data that follows the optical borders detected in the CANOPUS Churchill meridian well. Multispectral meridian scanning photometry allows identification of 486 nm H-beta emission with the equatorward edge of the evening sector growth phase electrojet, consistent with downward field-aligned current at this location. The 630 nm and 557 nm emissions due to the precipitation of electrons are identified with the more poleward regions or the poleward border, and upward field-aligned current. While these results are already known, the use of magnetic data is a new way of continuously monitoring growth phase. The identifications are supported by satellite imaging from Image and POLAR in individual cases. Despite separation of the proton and electron emissions as observed from the ground, our results are consistent with the polar cap boundary determined using proton imaging by SI12 on Image. We have also confirmed precipitation region and FAC coincidence using FAST, and corrected the electrojet position when FAST did not fly directly over the ground array, based on imaging from the high altitude satellites. [less ▲]

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See detailInsect prenyltransferases: Characterization, roles in insect biology, and evolution
Cusson, Michel; Vandermoten, Sophie ULg; Barbar, Aline et al

Conference (2009, December)

Detailed reference viewed: 22 (4 ULg)
See detailVirgin and Politics: Marian Worship within the Society of Jesus
Delfosse, Annick ULg

Conference (2009, December)

Detailed reference viewed: 15 (1 ULg)
Peer Reviewed
See detailLe rôle des représentations dans l’apprentissage des étudiants Erasmus
Meunier, Deborah ULg

Conference (2009, December)

Detailed reference viewed: 21 (0 ULg)
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Peer Reviewed
See detailAddressing the Legacy Costs in Introducing NDC
Jousten, Alain ULg; Holzmann, Robert

Conference (2009, December)

Detailed reference viewed: 11 (3 ULg)
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See detailSplit rank of two-row cuts
Louveaux, Quentin ULg

Conference (2009, December)

A simple relaxation consisting of two rows of a simplex tableau is a mixed-integer set with two equations, two free integer variables, and nonnegative continuous variables. Recently, Andersen et al. and ... [more ▼]

A simple relaxation consisting of two rows of a simplex tableau is a mixed-integer set with two equations, two free integer variables, and nonnegative continuous variables. Recently, Andersen et al. and Cornuéjols and Margot showed that the facet- defining inequalities of this set are either split cuts or intersection cuts obtained from lattice-free triangles and quadrilaterals. From an example given by Cook et al. it is known that one particular class of facet-defining triangle inequality does not have finite split rank. In this paper we show that all other facet-defining triangle and quadrilateral inequalities have finite split rank. [less ▲]

Detailed reference viewed: 11 (0 ULg)
See detailpCO2 in sea ice and CO2 fluxes estimates: where do we stand today?
Tison, J.; Delille, Bruno ULg; Papakyriakou, T. N. et al

Conference (2009, December)

Detailed reference viewed: 4 (0 ULg)
Peer Reviewed
See detailOne-piece zirconia implants : 18 months clinical outcomes.
VANHOUTTE, Vanessa ULg; LAMBERT, France ULg; ROMPEN, Eric ULg

Conference (2009, December)

Purpose : The aim of the present study was to evaluate prospectively the clinical outcomes of a prototype one-piece zirconia implants after a -18 month follow-up. Material and methods : 20 prototype one ... [more ▼]

Purpose : The aim of the present study was to evaluate prospectively the clinical outcomes of a prototype one-piece zirconia implants after a -18 month follow-up. Material and methods : 20 prototype one-piece zirconia implants were placed and immediately restored with provisional protheses. A flapless or a minimally invasive approach was used for every implant placement. Bone levels were recorded at baseline and -1 year. Surgical, biological and prosthetic complications were also assessed. Results : The study included 15 patients. Most of the implants (90%) were placed at the anterior maxilla. Six of the implant sites were previously augmented with autogenous bone block grafts, 8 were managed with socket preservation techniques, 3 implants were immediatly placed after extraction and one implant was placed simultanously with a guided bone regeneration. Insertion torque (> 30N/cm2) was reached for all implants. The implant survival and success rates reached respectively 100% and 95%. One implant abutment fractured at placement because of an excessive insertion torque (> 50 N/cm2). No further complication occurred. Conclusion : From the preliminary results of this prospective clinical study, one-piece zirconia implants seem to success after 1 year despite they were often placed in critical clinical situtations (bone augmentations) and immediately restored. Further follow-up is needed to evaluate the long-term outcomes. [less ▲]

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See detailLarge Margin Classification with the Progressive Hedging Algorithm
Defourny, Boris ULg; Wehenkel, Louis ULg

Conference (2009, December)

Several learning algorithms in classification and structured prediction are formulated as large scale optimization problems. We show that a generic iterative reformulation and resolving strategy based on ... [more ▼]

Several learning algorithms in classification and structured prediction are formulated as large scale optimization problems. We show that a generic iterative reformulation and resolving strategy based on the progressive hedging algorithm from stochastic programming results in a highly parallel algorithm when applied to the large margin classification problem with nonlinear kernels. We also underline promising aspects of the available analysis of progressive hedging strategies. [less ▲]

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