References of "2012"
     in
Bookmark and Share    
Full Text
See detailLa dynamique du karst dans le synclinal de Sprimont de 1898 à 2012
Peeters, Alexandre ULg; Ek, Camille ULg; Labarbe, Philippe et al

Conference given outside the academic context (2012)

Detailed reference viewed: 35 (10 ULg)
Full Text
See detailPlaidoyer universitaire pour le rail
Arnsperger, Christian; Cassiers, Isabelle; Crutzen, Nathalie ULg et al

Article for general public (2012)

[Chapeau] Le réseau ferré en Wallonie s’apparentera bientôt à un train touristique reliant deux gares Calatrava plutôt que d’assurer à chacun le droit à sa mobilité.

Detailed reference viewed: 57 (13 ULg)
Full Text
See detailS’engager dans un atelier-théâtre : vers une recomposition du sens de l’expérience
Brahy, Rachel ULg

Doctoral thesis (2012)

Dans cette thèse, nous traitons des animations théâtrales mises en place par les compagnies de théâtre-action situées en Communauté française de Belgique. La question centrale qui nous guide est celle des ... [more ▼]

Dans cette thèse, nous traitons des animations théâtrales mises en place par les compagnies de théâtre-action situées en Communauté française de Belgique. La question centrale qui nous guide est celle des formes concrètes que revêtent les pratiques contemporaines d’animation. Par ailleurs, nous nous intéressons également aux changements survenus dans l’exercice de l’activité. En effet, les premières compagnies à se revendiquer du « théâtre-action » naissent autour des mouvements de 1968. D’abord perçues comme expérimentales, ces pratiques pourraient bien, aujourd’hui, être considérées comme désuètes, à tout le moins, déconnectées des problématiques contemporaines. Notre enquête s’ouvre à partir de cette idée et nous montrons ensuite comment s’est acheminée une progressive reconversion des pratiques. En privilégiant le cadre théorique de la sociologie pragmatique française (et plus exactement, celui des « régimes d’engagement » établi par Laurent Thévenot) nous détaillons les modalités d’engagement dans un « atelier-théâtre ». Alors qu’originellement, le dispositif théâtral privilégiait les formats de la revendication « critique » et mobilisait prioritairement des personnes issues du monde ouvrier, on constate aujourd’hui une relation forte entre les compagnies de théâtre-action et le monde de l’accompagnement social. Cette proximité produit inévitablement un déplacement signifiant qui, pourtant, ne s’apparente pas à une totale superposition des secteurs. L’analyse de notre matériel empirique (composé d’entretiens et d’observation ethnographiques) témoigne d’une irréductible spécificité inhérente à l’engagement dans le monde du théâtre et de la fiction. Ainsi, les manières de prendre part à un monde commun et de s’engager en public sont repensées. En définitive, nous dégageons l’existence d’un « espace public esthétique » et précisons les voies par lesquelles un « engagement en présence » permettrait d’y accéder. [less ▲]

Detailed reference viewed: 300 (56 ULg)
Full Text
See detailDynamique du Karst dans le synclinal de Sprimont de 1898 à 2012
Peeters, Alexandre ULg; Ek, Camille ULg; Labarbe, Philippe et al

Conference (2012, December 08)

1. Une prospection dans le synclinal de Sprimont en 1898 C’est dans un synclinal calcaire de 12 km de long et 1,2 km de large que se situe Sprimont. Le synclinal, qui s’allonge d’est en ouest, est coupé ... [more ▼]

1. Une prospection dans le synclinal de Sprimont en 1898 C’est dans un synclinal calcaire de 12 km de long et 1,2 km de large que se situe Sprimont. Le synclinal, qui s’allonge d’est en ouest, est coupé en deux par la vallée de l’Ourthe. Le présent travail concerne la partie orientale de ce pli. Vers 1898, E. Van den Broeck, E. Martel et E. Rahir parcouraient ce synclinal et cartographiaient ses phénomènes karstiques (Van den Broeck, Martel & Rahir, 1910, vol. ll). 2. Révisions de la cartographie de 1971 à 2000 Raymond Michel entreprit en 1970-71 une révision de la cartographie et constata que beaucoup de pertes s’étaient déplacées, presque toutes vers l’amont, et sur une distance moyenne de 270 m ! Des levés ultérieurs par divers géographes confirmèrent l’extrème mobilité des pertes du vallon et furent consignées dans des cartographies de la CWEPSS et de la DGATLP. À ces mises à jour participèrent notamment D. Closson, A. Jaspar, V. Mousny, M. Salmon, J.-C. Schyns et A. Peeters. 3. Un nouveau levé en 2012 Une nouvelle révision fut entreprise en 2012 par deux équipes qui passèrent chacune trois journées pleines sur le terrain. La prospection s’appuya sur des photos aériennes et les phénomènes furent « géolocalisés » à l’aide d’un petit GPS de terrain (précision env. 10 m). Les pertes karstiques se déplacent au fil du temps, et avec parfois une spectaculaire rapidité. Par exemple, la perte du champ de maïs, au bord de la route N 678 (de Sprimont à Chanxhe) a été localisée en 1995 à 300 m en amont de sa localisation en 1971 ; en 1971, elle était déjà à 350 m en amont de sa situation en 1898. Et en 1999, un autre déplacement de la même perte avait provoqué un effondrement de la route N 678. 4. Conclusions Les phénomènes karstiques du synclinal de Sprimont présentent une dynamique fort active et, dans certains cas, dangereuse pour les travaux des hommes. Les déplacements des points d'enfouissement peuvent poser des problèmes de stabilité des bâtiments et des routes, canalisations, etc., mais aussi des problèmes de pollution. C'est pourquoi il est important de suivre attentivement l'évolution de l'hydrologie karstique. Ceci explique les décisions du Service public de Wallonie de mettre périodiquement à jour la cartographie des phénomènes, et de réglementer les implantations de constructions dans les zones karstiques. [less ▲]

Detailed reference viewed: 25 (6 ULg)
Full Text
See detailArthrose et hernie discale lombaire : bilan neurophysiologique
WANG, François-Charles ULg

Conference (2012, December 08)

Detailed reference viewed: 100 (9 ULg)
Full Text
See detailArsinoé II, déesse gréco-égyptienne à travers quelques petites stèles prolémaiques
Caneva, Stefano ULg

Scientific conference (2012, December 07)

Detailed reference viewed: 31 (0 ULg)
Full Text
Peer Reviewed
See detailDiscriminant BOLD Activation Patterns during Mental Imagery in Parkinson’s Disease
Schrouff, Jessica ULg; Cremers, Julien ULg; D'Ostilio, Kevin ULg et al

in Proceedings of MLINI 2012 (2012, December 07)

Using machine learning based models in clinical applications has become current practice and can prove useful to provide information at the subject’s level, such as predicting an (early) diagnosis or ... [more ▼]

Using machine learning based models in clinical applications has become current practice and can prove useful to provide information at the subject’s level, such as predicting an (early) diagnosis or monitoring the evolution of a disease. However, the performance of these models depends on the choice of a biomarker to detect the presence or absence of a disease. Choosing a biomarker is not straightforward, especially in the case of Parkinson’s disease when compared to healthy subjects. In the present work, we investigated the mental imagery of gait as a biomarker of Parkinson’s disease and showed that the signal in the mesencephalic locomotor region during the mental imagery of gait at a comfortable pace can discriminate significantly between idiopathic Parkinson’s disease patients and healthy subjects. Although there is room for improvement, the results of this preliminary study are promising. [less ▲]

Detailed reference viewed: 217 (35 ULg)
Full Text
Peer Reviewed
See detailCalitatea lucernei sub influenţa fertilizării în condiţiile din silvostepa Moldovei
Stavarache, Mihai; Vîntu, Vasile; Samuil, Costel et al

in Ţenu, Ioan; Vîntu, Vasile; Jităreanu, Gerard (Eds.) Durable Agriculture and Food Security – Priority objectives in research activity of the Ph.D. students from the UASVM Iasi (2012, December 07)

The research conducted during 2011-2012, on the Ezăreni farm, has sought influence of fertilization on the leaves/stems ratio, crude protein content (CP), neutral detergent fiber content (NDF), acid ... [more ▼]

The research conducted during 2011-2012, on the Ezăreni farm, has sought influence of fertilization on the leaves/stems ratio, crude protein content (CP), neutral detergent fiber content (NDF), acid detergent fiber content (ADF) and relative feed value (RFV), of alfalfa (Medicago sativa L.) in the second and third year of vegetation, at the first cut. The studied experimental plots were v1- unfertilized (control plot), v2-N50P50, v3-N75P50 and v4-30 t/ha manure). The results showed that the fertilization negatively affected crude protein content of plants. Although the protein content of leaves was higher and that of strains was less affected, the leaves/stems ratio decided this indicator for plant production. Organic fertilization showed a highly significant positive effect on the content of plant leaves and stems in NDF and ADF. [less ▲]

Detailed reference viewed: 64 (1 ULg)
Full Text
See detailDynamics of Elasto-Inertial Turbulence in Flows with Polymer Additives
Terrapon, Vincent ULg; Dubief, Yves; Soria, Julio

Scientific conference (2012, December 07)

Elasto-inertial turbulence is a new state of turbulence that may occur in certain viscoelastic flows, in particular flows with polymer additives. The dynamics of elasto-inertial turbulence is here ... [more ▼]

Elasto-inertial turbulence is a new state of turbulence that may occur in certain viscoelastic flows, in particular flows with polymer additives. The dynamics of elasto-inertial turbulence is here investigated numerically from the perspective of the coupling between polymer dynamics and flow structures. The resulting mechanism helps resolve a long standing controversy in the understanding of polymer drag reduction and explains the phenomenon of early turbulence, or onset of turbulence at lower Reynolds numbers than for Newtonian flows, previously observed in polymeric flows. In particular, we show that the introduction of small perturbations into the polymeric flow excites the unstable nature of the nonlinear advection term, resulting in the formation of sheets or cliffs of polymer stretch. These sheets of high polymer stretch, hosting a significant increase in extensional viscosity, create a strong local anisotropy, with a formation of local low-speed jet-like flow. The response of the flow is through pressure, whose role is to redistribute energy across components of momentum, resulting in the formation of waves, or trains of alternating rotational and straining motions. The mechanism shares some similarity with the Kelvin-Helmholtz instability, except that the thickness of these sheets is too close to the Kolmogorov scale for vortices to be created. Once triggered, EIT is self-sustained since the elastic instability creates the very velocity fluctuations it feeds upon. [less ▲]

Detailed reference viewed: 56 (17 ULg)
Full Text
Peer Reviewed
See detailBiorthogonalization Techniques for Least Squares Temporal Difference Learning
Jung, Tobias ULg; Ernst, Damien ULg

Poster (2012, December 07)

We consider Markov reward processes and study OLS-LSTD, a framework for selecting basis functions from a set of candidates to obtain a sparse representation of the value function in the context of least ... [more ▼]

We consider Markov reward processes and study OLS-LSTD, a framework for selecting basis functions from a set of candidates to obtain a sparse representation of the value function in the context of least squares temporal difference learning. To support efficient both updating and downdating operations, OLS-LSTD uses a biorthogonal representation for the selected basis vectors. Empirical comparisons with the recently proposed MP and LARS frameworks for LSTD are made. [less ▲]

Detailed reference viewed: 62 (17 ULg)
Full Text
See detailNorovirus: "new" enteropathogen agents
HUYNEN, Pascale ULg

Conference (2012, December 07)

Detailed reference viewed: 10 (1 ULg)
Full Text
Peer Reviewed
See detailCan we use Electrical Resistivity Tomography to measure root zone moisture dynamics in fields with multiple crops?
Garré, Sarah ULg; Coteur, Ine; Wongleecharoen, Chalemchart et al

in 2012 Scientific program (2012, December 07)

Detailed reference viewed: 29 (5 ULg)
Full Text
Peer Reviewed
See detailInfluenţa fertilizării minerale asupra producţiei la amestecul de lucernă şi golomăţ în anul III de vegetaţie
Muntianu, Iulian Constantin; Stavarache, Mihai; Ciobanu, Ciprian et al

in Ţenu, Ioan; Vîntu, Vasile; Jităreanu, Gerard (Eds.) Durable Agriculture and Food Security – Priority objectives in research activity of the Ph.D. students from the UASVM Iasi (2012, December 07)

This study was conducted during three production cycles of the third year of vegetation. The main objective was to determine the production of dry matter (DM) and crude protein (CP) made under the ... [more ▼]

This study was conducted during three production cycles of the third year of vegetation. The main objective was to determine the production of dry matter (DM) and crude protein (CP) made under the influence of mixture and fertilization with nitrogen on P50 agrofond to alfalfa and orchard grass. To achieve these objectives, three variants of mixture were tested between alfalfa and cocksfoot that were applied to four rates of mineral fertilizers. The mixture 75% alfalfa (Medicago sativa L.) and 25% orchard grass (Dactylis glomerata L.) under the effect of dosing with N100P50achieved the highest production increase of DM on cycle I, 108% (5.24 Mg haDM) compared to the control, unfertilized alfalfa in pure culture (4.85 Mg ha DM). The highest increase forthe CP yield was obtained on cycle I from the 100% alfalfa fertilized with doses of N-1-1100P50, 122% (1230 kg haCP) from 100% alfalfa unfertilized (1009 kg ha CP). Alfalfa fertilized with N-1-1100P50 rate had the highest increases on total DM yield (106%, 10.64 Mg haDM) and on total quantity of CP(124%, 2304 kg ha CP). [less ▲]

Detailed reference viewed: 69 (1 ULg)
Peer Reviewed
See detailNon-destructive measurement of volume magnetic properties of large, bulk superconductors
Vanderbemden, Philippe ULg; Dennis, T.; Shi, Y. H. et al

Conference (2012, December 07)

The development of large, single grain bulk superconductors by melt processing techniques has generated a need to characterize samples magnetically over large dimensions, exceeding typically 20 mm in ... [more ▼]

The development of large, single grain bulk superconductors by melt processing techniques has generated a need to characterize samples magnetically over large dimensions, exceeding typically 20 mm in diameter. The usual magnetic characterization gives relies on miniature Hall probe mapping and gives information about the field distribution above the sample surface. If volume properties are required (e.g. magnetization hysteresis loops), the sample needs to be cut in smaller pieces, since the DC magnetic characterization systems for measurements at cryogenic temperatures generally accommodate samples of relatively small size (typically < 5-10 mm diameter). In this work we describe how the hysteresis B(H) loops of large bulk superconducting samples exceeding 10 mm diameter can be determined using home-made sensing coils, either in liquid nitrogen or within the experimental chamber of a Quantum Design Physical Property Measurement System (PPMS). Magnetic properties are measured and compared to those given by several Hall probes attached to both faces of sample. The system is used successfully to measure the DC hysteresis loops of entire (RE)BCO bulk superconducting domains. A careful data acquisition and numerical integration of pick-up coil voltage enables the sweep rate of the magnetic field to be varied from 0.5 to 10 mT/s while keeping an excellent signal/noise ratio. A simple model based on demagnetizing field approach is used to emphasize how the hysteresis loops determined by this technique differ from “true” magnetization loops derived from classical magnetic moment measurements (e.g. SQUID or VSM). These differences are supported with numerical modelling of the average magnetization of the bulk sample using the Brandt method. [less ▲]

Detailed reference viewed: 111 (30 ULg)