Publications ORBi OA
Bookmark and Share    
Full Text
Peer Reviewed
See detailAnisotropic behaviour in the magnetic field dependence of the low temperature electrical resistance of calcium-doped lanthanum manganate thin films grown by RF magnetron sputtering
Vertruyen, Bénédicte ULg; Dusoulier, Laurent; Fagnard, Jean-François ULg et al

in Journal of Magnetism and Magnetic Materials (2004), 280(2-3), 264-272

We report about the magnetoresistive properties of calcium-doped lanthanum manganate thin films grown by RF magnetron sputtering on single crystalline LaAiO(3) and MgO substrates. Two orientations of the ... [more ▼]

We report about the magnetoresistive properties of calcium-doped lanthanum manganate thin films grown by RF magnetron sputtering on single crystalline LaAiO(3) and MgO substrates. Two orientations of the magnetic field with respect to the electrical current have been studied: (i) magnetic field in the plane of the film and parallel to the electrical current, and (ii) magnetic field perpendicular to the plane of the film. The film grown on LaAlO3 is characterised by an unusual magneto resistive behaviour when the magnetic field is applied perpendicular to the film plane: the appearance of two bumps in the field dependence of the resistance is shown to be related to the occurrence of anisotropic magneto resistive effects in manganate films. (C) 2004 Elsevier B.V. All rights reserved. [less ▲]

Detailed reference viewed: 59 (6 ULg)
Full Text
Peer Reviewed
See detailBrain function in coma, vegetative state, and related disorders
Laureys, Steven ULg; Owen, Adrian M; Schiff, Nicholas D

in Lancet Neurology (2004), 3(9), 537-546

We review the nosological criteria and functional neuroanatomical basis for brain death, coma, vegetative state, minimally conscious state, and the locked-in state. Functional neuroimaging is providing ... [more ▼]

We review the nosological criteria and functional neuroanatomical basis for brain death, coma, vegetative state, minimally conscious state, and the locked-in state. Functional neuroimaging is providing new insights into cerebral activity in patients with severe brain damage. Measurements of cerebral metabolism and brain activations in response to sensory stimuli with PET, fMRI, and electrophysiological methods can provide information on the presence, degree, and location of any residual brain function. However, use of these techniques in people with severe brain damage is methodologically complex and needs careful quantitative analysis and interpretation. In addition, ethical frameworks to guide research in these patients must be further developed. At present, clinical examinations identify nosological distinctions needed for accurate diagnosis and prognosis. Neuroimaging techniques remain important tools for clinical research that will extend our understanding of the underlying mechanisms of these disorders. [less ▲]

Detailed reference viewed: 83 (2 ULg)
Full Text
Peer Reviewed
See detailCross-modal facilitation is not specific to self-face recognition
Brédart, Serge ULg

in Consciousness & Cognition (2004), 13(3), 610-612

Detailed reference viewed: 38 (9 ULg)
Full Text
Peer Reviewed
See detailHigh-energy hadron spin-flip amplitude at small momentum transfer and new A(N) data from RHIC
Cudell, Jean-René ULg; Predazzi, E.; Selyugin, Oleg Viktorovich

in European Physical Journal A -- Hadrons & Nuclei (2004), 21(3), 479-486

In the case of elastic high-energy hadron-hadron scattering, the impact of the large-distance contributions on the behaviour of the slopes of the spin-non-flip and of the spin-flip amplitudes is analysed ... [more ▼]

In the case of elastic high-energy hadron-hadron scattering, the impact of the large-distance contributions on the behaviour of the slopes of the spin-non-flip and of the spin-flip amplitudes is analysed. It is shown that the long tail of the hadronic potential in impact parameter space leads to a value of the slope of the reduced spin-flip amplitude larger than that of the spin-non-flip amplitude. This effect is taken into account in the calculation of the analysing power in proton-nucleus reactions at high energies. It is shown that the preliminary measurement of A(N) (for p 12C obtained by the E950 Collaboration indeed favours a spin-flip amplitude with a large slope. Predictions for A)(N) (at P)(L) = 250 GeV/c are given. [less ▲]

Detailed reference viewed: 29 (8 ULg)
Full Text
Peer Reviewed
See detailIdentity but not expression memory for unfamiliar faces is affected by ageing
D'Argembeau, Arnaud ULg; Van der Linden, Martial ULg

in Memory (2004), 12(5), 644-654

We examined age-related differences in memory for identity and emotional expression of unfamiliar faces. Younger and older adults were presented with happy and angry faces and were later asked to ... [more ▼]

We examined age-related differences in memory for identity and emotional expression of unfamiliar faces. Younger and older adults were presented with happy and angry faces and were later asked to recognise the same faces displaying a neutral expression. When a face was recognised, they also had to remember what the initial expression of the face had been. In addition, states of awareness associated with both identity and expression memory were assessed with the remember/know/guess paradigm. Older adults showed less recollective experience than younger adults for identity but not for emotional expressions of the faces. This evidence indicates that age-related differences in memory may depend on the nature of the to-be-remembered information, with emotional/social information being remembered as well in older as in younger adults. [less ▲]

Detailed reference viewed: 30 (2 ULg)
Full Text
Peer Reviewed
See detailWastewater sludge convective drying: Influence of sludge origin
Léonard, Angélique ULg; Vandevenne, P.; Salmon, Thierry ULg et al

in Environmental Technology (2004), 25(9), 1051-1057

This paper deals with thermal drying of wastewater sludges, whose management will become crucial in the forthcoming years. Sludges collected after mechanical dewatering in 5 different WWTPs are submitted ... [more ▼]

This paper deals with thermal drying of wastewater sludges, whose management will become crucial in the forthcoming years. Sludges collected after mechanical dewatering in 5 different WWTPs are submitted to the same convective drying treatment in order to try finding some relations between the drying behaviours, the type of effluent and wastewater treatments. Results show clearly sludge drying remains a particularly complex operation because sludges may exhibit very different behaviours, both from kinetic and texture points of view. Initial moisture content and global composition are not sufficient to explain the different observed behaviours. It is too early to claim one or another type of water treatment has an influence on the drying behaviour. However, the drying rates can be classified in the inverse order of the organic content. Moreover for sludges at the same siccities, the harder the material (rheological properties), the higher the drying rate. Final textural properties can be related to the rheological properties and the internal diffusion limitations lowering the drying intensity. [less ▲]

Detailed reference viewed: 96 (13 ULg)
Full Text
Peer Reviewed
See detailComparison of Sm complexes with Sn compounds for syntheses of copolymers composed of lactide and cyclic carbonates and their biodegradabilities
Yasuda, Hajime; Yamamoto, Katsuhiro; Nakayama, Yuushou et al

in Reactive & Functional Polymers (2004), 61

The comparison of organolanthanide complexes, (C5Me5)(2)SmMe(THF) (Sm1) and [(C5Me5)(2)SM](2)(PhC=C= C=CPh) (Sm2), with tin compounds, Bu2Sn(OMe)(2) (Sn1) and Bu2Sn(OCH2CH2CH2O) (Sn2), in the preparation ... [more ▼]

The comparison of organolanthanide complexes, (C5Me5)(2)SmMe(THF) (Sm1) and [(C5Me5)(2)SM](2)(PhC=C= C=CPh) (Sm2), with tin compounds, Bu2Sn(OMe)(2) (Sn1) and Bu2Sn(OCH2CH2CH2O) (Sn2), in the preparation of random and diblock copolymers composed Of L-lactide (L-LA) or D,L-LA and epsilon-caprolactone (CL), and the preparation of triblock copolymers composed Of L-LA/CL/L-LA was studied and the biodegradabilities of the resulting copolymers with proteinase K and a compost were examined. Poly(L-LA-ran-CL) shows much higher degradability than poly(L-LA) with proteinase K, and poly(L-LA), poly(L-LA-ran-CL) and poly(L-LA-b-CL) (b means block) prepared with Sm1 had better degradability than those synthesized with the Sn1 compound. The degradability Of Poly(L-LA-ran-CL) with proteinase K is higher than that Of poly(L-LA-b-CL). Poly(LA-ran-CL) and poly(LA-b-CL) prepared with Sml revealed higher degradability than those obtained with Sn1 using a compost. Triblock copolymers, poly(L-LA-b-CL-b-L-LA), synthesized with Sm2 revealed nearly the same degradability with those obtained with Sn2 using a compost. Finally, biocompatibility was studied with macrophage activation assay using RAW 264.7, and metabolic viability assay using Cell Titer Aqueous non-radioactive Cell. [less ▲]

Detailed reference viewed: 40 (7 ULg)
Full Text
Peer Reviewed
See detailSensor network design using genetic algorithm
Gerkens, Carine ULg; Heyen, Georges ULg

(2004, September)

Detailed reference viewed: 39 (9 ULg)
Full Text
Peer Reviewed
See detailL'image du mois: hernie inguino-scrotale "geante"
Detry, Olivier ULg; De Roover, Arnaud ULg; Honore, Pierre ULg et al

in Revue Médicale de Liège (2004), 59(9), 479-80

Detailed reference viewed: 1017 (19 ULg)
Full Text
See detailDélits-Mythes
Dupont, Pascal ULg

in Mathématique et Pédagogie (2004), 148

Detailed reference viewed: 27 (2 ULg)
Full Text
See detailLe caillou de Spinoza (à propos de Médias et Censure)
Durand, Pascal ULg

Article for general public (2004)

Detailed reference viewed: 124 (6 ULg)
Full Text
Peer Reviewed
See detailLo spazio del paesaggio "in digitale": una diagnostica in immagine
Dondero, Maria Giulia ULg

in Ocula Occhio semiotico sui media / Semiotic Eye on Media (2004), 5

Cet article porte sur la traduction intersémiotique du langage pictural dans l’image numérique. En particulier, les paysages analysés appartiennent à une série intitulée Orient et sont des traductions ... [more ▼]

Cet article porte sur la traduction intersémiotique du langage pictural dans l’image numérique. En particulier, les paysages analysés appartiennent à une série intitulée Orient et sont des traductions numériques de quelques chefs-d’œuvre de la peinture occidentale (Friedrich, Van Gogh, etc.). Ces images numériques ambitionnent de se poser comme summa de la culture de l’image occidentale et de sanctionner une tradition entière. Si les images numériques d’Orient apparaissent comme une étude diagnostique sur les chefs-d’œuvre picturaux du passé, cette même étude en numérique se révèle comme une pratique iconoclaste, dans la mesure où les stratégies énonciatives des œuvres numériques d’Orient produisent une dé-anthropomorphisation du geste instaurateur de la peinture. Le pouvoir iconoclaste des ces images numériques est directement lié à la pratique productive qui, non seulement efface la figuration de la peinture de l’âge moderne et contemporain, mais en nivelle les genres et les modi operandi. [less ▲]

Detailed reference viewed: 23 (1 ULg)
Full Text
Peer Reviewed
See detailAnalyse du discours de travailleurs confrontés à des changements organisationnels : une perspective transactionnelle .
De Zanet, Fabrice ULg; Hansez, Isabelle ULg; Bossut, Muriel ULg et al

in Travail Humain (Le) (2004), 67(3), 257-281

Downsizing, restructuring and lay-offs have become recurrent practices among companies today. Whilst the consequences of such major changes on individual well-being are well documented, little is known ... [more ▼]

Downsizing, restructuring and lay-offs have become recurrent practices among companies today. Whilst the consequences of such major changes on individual well-being are well documented, little is known about the nature of work environment changes. confronting workers and how they appraise these events. The objective of the present study was to combine quantitative and qualitative data in order to get a better understanding of organizational changes from a transactional perspective. Fifty-seven workers-from seven companies were interviewed. Interviews were transcribed and analyzed along three axes (a) What were the changes confronting workers ? (b) How did they react to these changes (c) How did they perceive the way their company dealt with these changes ? Results indicate that workers were mainly confronted with changes among colleagues and supervisors, changes in terms of workload as weft as task content. Moreover, it appears that not all changes were appraised negatively. With regard to the. consequences. reported by, workers, the findings reported in existing literature were generally supported by the current data. Workers reported a. general deterioration of their quality of life, a degradation of working climate and an increase in job insecurity as a result of organizational changes. Finally, workers indicated that the way companies managed changes was not really efficient. Workers complained mainly about information. They reported that they were either poorly informed or not informed at all about future changes. In conclusion, this study stresses the need for a qualitative analysis of the experience of workers confronted with organisational changes. [less ▲]

Detailed reference viewed: 72 (10 ULg)
Full Text
See detailL'impact de l'obligation de vote
Jacquemain, Marc ULg

E-print/Working paper (2004)

The paper draws on the survey led on 2.500 walloon people in collaboration with IWEPS in 2003-2004. It studies the impact of the belgian law that makes voting compulsory. If it was no longer teh case, who ... [more ▼]

The paper draws on the survey led on 2.500 walloon people in collaboration with IWEPS in 2003-2004. It studies the impact of the belgian law that makes voting compulsory. If it was no longer teh case, who would go on voting ? Results of the survey shows that the constituency would differ rather strongly from what it is now : in particular, amnong the poor people and the less educated would many would drop voting. But it would be the case too of lonely people, for instance or people who feel unsecure. The result would be that the specific demands form those categories would loose much weight in the political process. [less ▲]

Detailed reference viewed: 53 (1 ULg)
Full Text
See detailModelling groundwater flow and solute transport in karstic systems: from dreams to the reality – how can models help for groundwater vulnerability assessment ?
Dassargues, Alain ULg

in Proceedings of Trans-Karst 2004, International Transdisciplinary Conference on Development and Conservation of Karst Regions (2004, September)

Detailed reference viewed: 34 (4 ULg)
Full Text
See detailBesoins et offre sociale et sanitaire au travers d'une approche globale et territoriale (thème 3.3
Hanson, Sophie; Decoster, Dominique-Paule; Michel, Quentin ULg

Report (2004)

Detailed reference viewed: 12 (1 ULg)
Full Text
See detailReconstruire la ville sur la ville - Recyclage des espaces dégradés
De Keersmaecker, M.-L.; Barthe-Bastalle, Hélène; Gérard, Sabine et al

Report (2004)

Detailed reference viewed: 29 (8 ULg)
Full Text
Peer Reviewed
See detailOPEN-LOOP STABILIZATION OF 2D IMPACT JUGGLING
Ronsse, Renaud; Lefèvre, Philippe; Sepulchre, Rodolphe ULg

in Proceedings of 6th IFAC Symposium on Nonlinear Control Systems (2004, September)

The paper studies the properties of a sinusoidally vibrating wedge billiard as a model for 2D impact juggling. It is shown that some periodic orbits that are unstable in the elastic xed wedge become ... [more ▼]

The paper studies the properties of a sinusoidally vibrating wedge billiard as a model for 2D impact juggling. It is shown that some periodic orbits that are unstable in the elastic xed wedge become exponentially stable in the (non-)elastic vibrating wedge. These orbits are linked with some classical juggling patterns, providing an interesting benchmark for the study of the frequency-locking properties in human rhythmic tasks. [less ▲]

Detailed reference viewed: 7 (0 ULg)
Full Text
Peer Reviewed
See detailSTABILIZATION THROUGH WEAK AND OCCASIONAL INTERACTIONS : A BILLIARD BENCHMARK
Gerard, Manuel; Sepulchre, Rodolphe ULg

in Proceedings of the 6th IFAC Symposium on Nonlinear Control Systems (2004, September)

The paper addresses the stabilization of periodic orbits in a wedge billiard with actuated edges. It is shown how the rich dynamical properties of the open-loop dynamics, e.g. ergodicity properties and ... [more ▼]

The paper addresses the stabilization of periodic orbits in a wedge billiard with actuated edges. It is shown how the rich dynamical properties of the open-loop dynamics, e.g. ergodicity properties and KAM curves, can be exploited to design robust stabilizing feedbacks with large basins of attraction. [less ▲]

Detailed reference viewed: 105 (1 ULg)
Full Text
Peer Reviewed
See detailEstrogen and pain: a study in aromatase knock-out mice using the formalin model.
Multon, Sylvie ULg

Conference (2004, September)

Detailed reference viewed: 10 (0 ULg)