Existe-il une hiérarchie des valeurs européennes ?

in Revue de la Faculté de Droit de l'Université de Liège (2009), 2

Existe-t-il des communautés sur Internet ? La réponse de trois études du mouvement du logiciel libre

in Actes des travaux du comité de recherche « Sociologie de la communication » (2011)

L'Open Directory Project, Debian et Wikipedia sont trois collectifs issus du mouvement du logiciel libre. Leur comparaison permet de dégager les traits communs et les différences d'organisation sociale de ... [more ▼]

L'Open Directory Project, Debian et Wikipedia sont trois collectifs issus du mouvement du logiciel libre. Leur comparaison permet de dégager les traits communs et les différences d'organisation sociale de ces trois collectifs médiatisés par la technologie.Nous examinons dans quelle mesure ces éléments empiriques s'accordent avec les définitions classiques de communauté (fut-elle virtuelle). Nous interrogeons dès lors l'opportunité de caractériser ces phénomènes au moyen d'une telle notion et identifiant deux alternatives : soit modifier les définitions classiques, soit proposer de nouvelles notions. Finalement, nous proposons la notion plus adéquate de collectifs médiatisés orientés vers un projet. [less ▲]

Existe-t-il des progres dans le traitement du cancer du pancreas metastatique?

in Revue Médicale de Liège (2000), 55(3), 146-8

Pancreatic cancer is one of the most lethal cancers in the western world. The authors review the different chemotherapeutic regimens for the palliative approach of this disease. 5-fluorouracil has been ... [more ▼]

Pancreatic cancer is one of the most lethal cancers in the western world. The authors review the different chemotherapeutic regimens for the palliative approach of this disease. 5-fluorouracil has been the only drug with some efficacy for a longtime. Recently a clinical benefit has been obtained with gemcitabine. Polychemotherapy regimens based on gemcitabine, 5-fluorouracil, cisplatin and/or epirubicin have been administered in clinical phase II trials. The superiority of polychemotherapy in terms of palliative benefits or survival is uncertain. Palliative care remains an important issue. [less ▲]

Existe-t-il un embryon de « class action » en droit social : l’article 138bis, § 2 du code judiciaire ?

in Kefer, Fabienne (Ed.) Vers une "class action" en droit belge? (2008)

Existe-t-il une "memoire therapeutique" en prevention cardiovasculaire?

in Revue Médicale Suisse (2007), 3(122), 1864-61868-9

The prevention of type 2 diabetes and of cardiovascular diseases is a major public health objective. Obviously life-style changes play a major role in this strategy. The Finnish Prevention Study recently ... [more ▼]

The prevention of type 2 diabetes and of cardiovascular diseases is a major public health objective. Obviously life-style changes play a major role in this strategy. The Finnish Prevention Study recently demonstrated that the remarkable diabetes prevention observed after a 4-year lifestyle intervention is maintained after a further 3-year period of follow-up without prolongation of the active intervention. Such a reminiscent effect may also be observed in the prevention of cardiovascular diseases with various pharmacological interventions: an ACE inhibitor (HOPE), a statin (4S), a fibrate (Helsinki Heart Study) or an intensive insulin therapy in type I diabetic patients (DCCT-EDIC). These intriguing results argue for a long-term memory of previous therapeutic interventions in cardiovascular prevention. [less ▲]

Existe-t-il une relation entre les champs électromagnétiques 50-60 Hz et le risque de cancer?

in Tempo Médical (1997)

Cette publication permet de mieux comprendre à quoi correspond la notion de champs électromagnétiques et d'évaluer les résultats des études épidémiologiques en connaissant leurs principales difficultés ... [more ▼]

Cette publication permet de mieux comprendre à quoi correspond la notion de champs électromagnétiques et d'évaluer les résultats des études épidémiologiques en connaissant leurs principales difficultés méthodologiques et les principales hypothèses concernant l'interaction entre ces champs électromagnétiques et les organismes biologiques. [less ▲]

Existence domains for nonlinear structures in complex two-ion-temperature plasmas

in Journal of Physics : A Mathematical & General (2006), 39(12), 3137-3146

The existence domains for one-dimensional acoustic solitons and double layers in complex (dusty) plasmas with two ion temperatures are obtained, using the fluid dynamic paradigm with a general polytropic ... [more ▼]

The existence domains for one-dimensional acoustic solitons and double layers in complex (dusty) plasmas with two ion temperatures are obtained, using the fluid dynamic paradigm with a general polytropic equation of state. Dust-acoustic solitons are considered in a four-component plasma of negative dust grains, cool and very hot ions, and very hot electrons. Whereas in a dust-ion-electron plasma only negative potential solitons are supported, the presence of a second ion component allows positive potential solitons to occur as well. The existence domain in parameter space is delineated, in particular, also for the reduced three-component case in which there are no free electrons, all electrons being adsorbed onto the dust grains. Next, the ion-acoustic regime is considered. Both positive and negative potential dust-ion acoustic solitons and double layers are found, and their existence conditions in the parameter space of cool ion density and Mach number derived. [less ▲]

Existence of a short period (3.5-4 hours) in the photometric variability of WR 66.

in Astronomy and Astrophysics (1996), 306

We report here on an independent detection of a short period (~4hours) in the photometric variations of WR66, thus confirming in broad terms the discovery by Antokhin et al.. In addition, we present the ... [more ▼]

We report here on an independent detection of a short period (~4hours) in the photometric variations of WR66, thus confirming in broad terms the discovery by Antokhin et al.. In addition, we present the first spectroscopic variability analysis for this star. A few peculiarities of the spectrum of WR66 are also discussed. Finally, we perform a brief examination of different possible origins of the phenomenon. [less ▲]

Existence of natural and conformally invariant quantizations of arbitrary symbols

in Journal of Nonlinear Mathematical Physics (2010), 17

A quantization can be seen as a way to construct a differential operator with prescribed principal symbol. The map from the space of symbols to the space of differential operators is moreover required to be ... [more ▼]

A quantization can be seen as a way to construct a differential operator with prescribed principal symbol. The map from the space of symbols to the space of differential operators is moreover required to be a linear bijection. In general, there is no natural quantization procedure, that is, spaces of symbols and of differential operators are not equivalent, if the action of local diffeomorphisms is taken into account. However, considering manifolds endowed with additional structures, one can seek for quantizations that depend on this additional structure and that are natural if the dependence with respect to the structure is taken into account. The existence of such a quantization was proved recently in a series of papers in the context of projective geometry. Here, we show that the construction of the quantization based on Cartan connections can be adapted from projective to pseudo-conformal geometry to yield the natural and conformally invariant quantization for arbitrary symbols, outside some critical situations. [less ▲]

L'existentialisme comme éthique, de Heidegger à Sartre

in Temps Modernes (Les) (2008), 650