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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)

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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)

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See detailLe projet "Insert'Prof" : Un dispositif d'accompagnement pour les jeunes enseignants favorisant une insertion réussie dans la vie professionnelle
Beckers, Jacqueline ULg; Jardon, Dorothée; Jaspar, Steve ULg et al

in Portelance, Liliane; Mukamurera, Joséphine; Martineau, Stéphane (Eds.) et al L'insertion dans le milieu scolaire : Une phase cruciale du développement professionnel de l'enseignant (2008)

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See detailProjet "NOSEMOLD" Appareil de diagnostic rapide des moisissures sur les matériaux de construction
Nicolas, Jacques ULg; Delva, Julien

Report (2008)

The report concerns a "FIRST spin-off" project aiming at creating a spin-off company based on the research of the unity of the university. The study concerned the design of an instrument, based on the ... [more ▼]

The report concerns a "FIRST spin-off" project aiming at creating a spin-off company based on the research of the unity of the university. The study concerned the design of an instrument, based on the "electronic nose" principle, to detect the presence of moulds on building materials from the analysis of the gas phase. The apparatus proved to be able of distinguishing pure material from contaminated one, but it was more difficult to identify the mould species. [less ▲]

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See detailProjet "Partenariats pour le Développement des Forêts Communautaires" (PDFC). Présentation des résultats et des leçons apprises.
Meunier, Quentin; Julve Larrubia, Cecilia; Federspiel, Michèle et al

Conference given outside the academic context (2013)

Detailed reference viewed: 7 (0 ULg)