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Peer Reviewed
See detailProjectiles and hafting technology
Rots, Veerle ULg

in Iovita, Radu; Sano, Katsuhiro (Eds.) Multidisciplinary Approaches to the Study of Stone Age Weaponry (in press)

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See detailProjectiles and the abuse of the use-wear method in a search for impact
Rots, Veerle ULg; Plisson, Hugues

in Journal of Archaeological Science (2014), 48

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See detailProjecting Generation Decisions Induced by a Stochastic Program on a Family of Supply Curve Functions
Defourny, Boris ULg; Wehenkel, Louis ULg

Scientific conference (2007, March)

We propose to post-process the results of a scenario based stochastic program by projecting its decisions on a parameterized space of policies. By doing so the risk of overfitting to the set of scenarios ... [more ▼]

We propose to post-process the results of a scenario based stochastic program by projecting its decisions on a parameterized space of policies. By doing so the risk of overfitting to the set of scenarios used in the stochastic program is reduced. A proper choice of the structure of the space of policies allows one to exploit them in the context of novel scenarios, be it for Monte-Carlo based value estimation or for use in real-life conditions. These ideas are presented in the context of planning the exploitation of electric energy resources or for evaluating the economic value of a portfolio of assets. [less ▲]

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See detailProjection-débat autour d'Anita G. d'Alexander Kluge
Hamers, Jérémy ULg; Cormann, Grégory ULg

Conference given outside the academic context (2013)

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See detailProjections à l’échéance 2100 des changements de température et de précipitations en Belgique réalisées à l’aide des modèles du GIEC
Dury, Marie ULg

Master's dissertation (2008)

En 2007, le Groupe d’experts du GIEC a publié son 4e rapport (AR4) sur les changements climatiques. Les résultats proposés dans l’AR4 ont été obtenus à l’aide d’un vaste échantillon de modèles de ... [more ▼]

En 2007, le Groupe d’experts du GIEC a publié son 4e rapport (AR4) sur les changements climatiques. Les résultats proposés dans l’AR4 ont été obtenus à l’aide d’un vaste échantillon de modèles de circulation générale (AOGCMs) nouvellement homologués par le groupe. Notre travail a profité des avancées réalisées dans le monde de la modélisation climatique pour tenter de procéder à un état des lieux, remise à jour améliorée, des changements climatiques qui pourraient être enregistrés en Belgique au cours du 21e siècle en matière de température et de précipitations. Etant donné le large éventail de modèles mis à notre disposition, nous avons pu nous permettre d’écrémer ce vaste catalogue, ce que d’autres travaux antérieurs n’avaient pu faire. Ainsi, la première partie de cette étude est-elle consacrée à l’évaluation des différents AOGCMs dans le but de ne conserver que les plus aptes à réaliser des projections climatiques cohérentes pour notre territoire. La seconde partie de notre travail porte sur l’analyse des projections réalisées pour la Belgique par les huit modèles de circulation générale sélectionnés dans la partie précédente. Pour resituer les changements climatiques que les AOGCMs annoncent pour notre pays dans un contexte régional plus large, nous décrivons préalablement l’évolution climatique que connaîtra l’Europe au 21e siècle. Pour la Belgique, nous nous attachons à montrer les évolutions dans les moyennes annuelles et saisonnières pour les températures moyenne, minimale et maximale ainsi que pour les précipitations. Ensuite, nous tentons d’identifier les changements dans les statistiques journalières des évènements « extrêmes », ce qui, il faut le souligner, n’avait encore jamais été réalisé pour notre territoire. Ainsi, les évolutions dans le nombre de jours de gel, de jours de canicule, de vagues de chaleur,… et les changements dans la distribution des intensités des précipitations journalières ont été étudiés. [less ▲]

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See detailProjective and Affine Spatial Operators for Regions
Billen, Roland ULg; Clementini, Eliseo

in Joo Er, Meng; D'Attelis, Carlos; Mastorakis, M. (Eds.) Proceedings of WSEAS International Conferences MCBC, MCBE, ICAMSL, ICAI (2002, December)

Among Geographic Information Systems functionality is the retrieval of spatial data by using various spatial operators. The proposal of this paper is about the definition of new spatial operators that are ... [more ▼]

Among Geographic Information Systems functionality is the retrieval of spatial data by using various spatial operators. The proposal of this paper is about the definition of new spatial operators that are based on projective and affine geometric invariants. Such a special category of geometric properties, despite being not widely used in previous work, reveals itself a very interesting realm for the exploration of new operators that are both powerful and easy to use from an end-user perspective. [less ▲]

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See detailA projective approach to handle 3D spatial data
Billen, Roland ULg

Poster (2003, September)

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See detailA projective approach to handle 3D spatial data
Billen, Roland ULg

in Proceedings of GIS Research UK 2004 (2004)

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See detailProjective primitives vs. Topological promitives: What’s the benefit ?
Billen, Roland ULg

Conference (2005, April)

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See detailProjective relations in a 3D environment
Billen, Roland ULg; Clementini, Eliseo

in Lecture Notes in Computer Science (2006), 4197

This paper presents a model for positional relations among bodies of arbitrary shape in three dimensions. It is based on an existing model for projective relations among regions in two dimensions. The ... [more ▼]

This paper presents a model for positional relations among bodies of arbitrary shape in three dimensions. It is based on an existing model for projective relations among regions in two dimensions. The motivation is to provide a formal qualitative spatial relations model for emerging 3D applications. Two sets of relations are defined: ternary projective relations based on the concept of collinearity between a primary object and two reference objects and quaternary projective relations based on the concept of coplanarity between a primary object and three reference objects. Four sets of JEPD relations are defined for points and bodies in R-3. [less ▲]

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See detailProjectively equivariant quantization over R^{p|q}
Radoux, Fabian ULg

Conference (2011, September 13)

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See detailProjectively equivariant quantizations over the superspace R^{p|q}
Radoux, Fabian ULg

Conference (2010, November 03)

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See detailProjectively equivariant quantizations over the superspace R^{p|q}
Mathonet, Pierre ULg; Radoux, Fabian ULg

in Letters in Mathematical Physics (2011), 98(3), 311-331

We investigate the concept of projectively equivariant quantization in the framework of super projective geometry. When the projective superalgebra pgl(p+1|q) is simple, our result is similar to the ... [more ▼]

We investigate the concept of projectively equivariant quantization in the framework of super projective geometry. When the projective superalgebra pgl(p+1|q) is simple, our result is similar to the classical one in the purely even case: we prove the existence and uniqueness of the quantization except in some critical situations. When the projective superalgebra is not simple (i.e. in the case of pgl(n|n)\not\cong sl(n|n)), we show the existence of a one-parameter family of equivariant quantizations. We also provide explicit formulas in terms of a generalized divergence operator acting on supersymmetric tensor fields. [less ▲]

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See detailProjectively Equivariant Symbol Calculus for Bidifferential Operators
Boniver, Fabien ULg

in Letters in Mathematical Physics (2000), 54(2), 83-100

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See detailProjectively Invariant Quantization in Super Geometry
Leuther, Thomas ULg

Doctoral thesis (2013)

Detailed reference viewed: 34 (12 ULg)
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See detailProjectivity Of Sheaves On A Locale And Of Free Modules
Dupont, Pascal ULg

in Journal of Pure and Applied Algebra (1989), 62(1),

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See detailProjects in Fracture Simulations
Noels, Ludovic ULg; Becker, Gauthier; Wu, Ling ULg et al

Scientific conference (2011, September)

Detailed reference viewed: 7 (6 ULg)