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See detailA Hybrid Systems Approach to Trajectory Tracking Control for Juggling Systems
Sanfelice, Ricardo G.; Teel, Andrew R.; Sepulchre, Rodolphe ULg

in Proceedings of the 46th IEEE Conference on Decision and Control (2007, December)

From a hybrid systems point of view, we provide a modeling framework and a trajectory tracking control design methodology for juggling systems. We present the main ideas and concepts in a one degree-of ... [more ▼]

From a hybrid systems point of view, we provide a modeling framework and a trajectory tracking control design methodology for juggling systems. We present the main ideas and concepts in a one degree-of-freedom juggler, which consists of a ball bouncing on an actuated robot. We design a hybrid control strategy that, with only information of the ball’s state at impacts, controls the ball to track a reference rhythmic pattern with arbitrary precision. We extend this hybrid control strategy to the case of juggling multiple balls with different rhythmic patterns. Simulation results for juggling of one and three balls with a single actuated robot are presented. [less ▲]

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See detailA hybrid tabu search heuristic for a bilevel competitive facility location model
Kucukaydin, Hande ULg; Aras, Necati; Altinel, I. Kuban

in Blesa, Maria J.; Blum, Christian; Raidl, Günther (Eds.) et al Hybrid metaheuristics: 7th International Workshop, HM 2010, Vienna, Austria, October 2010, Proceedings (2010)

We consider a problem in which a firm or franchise enters a market by locating new facilities where there are existing facilities belonging to a competitor. The firm aims at finding the location and ... [more ▼]

We consider a problem in which a firm or franchise enters a market by locating new facilities where there are existing facilities belonging to a competitor. The firm aims at finding the location and attractiveness of each facility to be opened so as to maximize its profit. The competitor, on the other hand, can react by adjusting the attractiveness of its existing facilities, opening new facilities and/or closing existing ones with the objective of maximizing its own profit. The demand is assumed to be aggregated at certain points in the plane and the facilities of the firm can be located at prespecified candidate sites. We employ Huff's gravity-based rule in modeling the behavior of the customers where the fraction of customers at a demand point that visit a certain facility is proportional to the facility attractiveness and inversely proportional to the distance between the facility site and demand point. We formulate a bilevel mixed-integer nonlinear programming model where the firm entering the market is the leader and the competitor is the follower. In order to find a feasible solution of this model, we develop a hybrid tabu search heuristic which makes use of two exact methods as subroutines: a gradient ascent method and a branch-and-bound algorithm with nonlinear programming relaxation. [less ▲]

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See detailHybrid Tabu Search Heuristics for a Bilevel Competitive Facility Location Model
Kucukaydin, Hande ULg; Aras, Necati; Altinel, I. Kuban

Conference (2012, February 02)

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See detailHybrid wetting state on micro-waffle textures
Caps, Hervé ULg; Vandormael, Denis; Loicq, Jerôme ULg et al

in Europhysics Letters (2009), 88

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See detailHybrid wheat - a different wheat crop?
Bodson, Bernard ULg; Franc, Jean; Destain, Jean-Pierre ULg et al

in Aspects of Applied Biology (1997, December 15), (50), 23-30

From 1994 to 1996, trials have been carried out in Gembloux (Belgium) to evaluate the agronomical value of hybrid wheat varieties and to determine the best adapted growing conditions for these new wheats ... [more ▼]

From 1994 to 1996, trials have been carried out in Gembloux (Belgium) to evaluate the agronomical value of hybrid wheat varieties and to determine the best adapted growing conditions for these new wheats. These experiments show that the best hybrids have a yield potential hyghly superior to classical varieties. In order to improve the cost-effectiveness of hybrid wheat crops, a reduction in seed rate may be possible together with changes in nitrogen fertilisation, if the results of preliminary studies are confirmed. [less ▲]

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See detailHybrid γ Doradus/δ Scuti Stars: Comparison Between Observations and Theory
Bouabid, M-P; Montalban Iglesias, Josefa ULg; Miglio, Andrea ULg et al

in AIP Conference Proceedings (2009), 1170

γ Doradus (γ Dor) are F-type stars pulsating with high order g-modes. Their instability strip (IS) overlaps the red edge of the δ Scuti δ Sct) one. This observation has led to search for objects in this ... [more ▼]

γ Doradus (γ Dor) are F-type stars pulsating with high order g-modes. Their instability strip (IS) overlaps the red edge of the δ Scuti δ Sct) one. This observation has led to search for objects in this region of the HR diagram showing p and g-modes simultaneously. The existence of such hybrid pulsators has recently been confirmed [10] and the number of candidates is increasing (e.g. [17]). From a theoretical point of view, non-adiabatic computations including a time-dependent treatment of convection (TDC) predict the existence of γ Dor/δ Sct hybrid pulsators ([5], [8]). Our aim is to confront the properties of the observed hybrid candidates with the theoretical predictions from non-adiabatic computations of non-radial pulsations including the convection-pulsation interaction. [less ▲]

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See detailL'hybridation des genres et formes dans la littérature pour la jeunesse: au service d'une préoccupation "didactique" ?
Delbrassine, Daniel ULg

Scientific conference (2014, April 25)

Observation des formes et genres de la littérature de jeunesse contemporaine: romans, albums et documentaires montrent des particularités qui les distinguent des modèles de la littérature générale ... [more ▼]

Observation des formes et genres de la littérature de jeunesse contemporaine: romans, albums et documentaires montrent des particularités qui les distinguent des modèles de la littérature générale adressée aux adultes. Ces écarts peuvent s'expliquer par une intention "didactique" ou "pédagogique". [less ▲]

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See detailHybridation, intergénéricité et ironie dans “Arsène Schrauwen” d’Olivier Schrauwen
Crucifix, Benoît ULg; Meesters, Gert

in Neuvième art 2.0. (2016)

« La vraie vie, c’est ce qui se passe dans la tête quand on fait la vaisselle », ou « J’ai souvent une idée [de ce à quoi ressemblera ma prochaine histoire], mais généralement mon subconscient a d’autres ... [more ▼]

« La vraie vie, c’est ce qui se passe dans la tête quand on fait la vaisselle », ou « J’ai souvent une idée [de ce à quoi ressemblera ma prochaine histoire], mais généralement mon subconscient a d’autres projets ». Ces citations, tirées d’un récent entretien, sont typiques de la posture d’Olivier Schrauwen et indiquent directement qu’une histoire sur le Congo belge, dans ses mains, ressemblera à toute autre chose que les récits (post)coloniaux auxquels la bande dessinée s’est habituée. Paru en français en 2015 à L’Association, Arsène Schrauwen fait le récit halluciné du voyage au Congo qu’aurait effectué, comme le titre semble l’induire, le grand-père de l’auteur. En partant d’un contexte de production où la bande dessinée documentaire et autobiographique sont désormais bien ancrés, nous nous pencherons sur la façon dont Arsène Schrauwen se distingue de telles approches, souvent par l’absurde et l’ironie, mais aussi en invoquant des thèmes et motifs typiques des genres populaires qui ont dominés l’histoire de la bande dessinée. L’ouvrage de Schrauwen revendique ainsi une portée auto-réflexive qui s’étend d’autant plus à une réflexion comique sur le « langage » de la bande dessinée, un jeu qui sert le propos du livre à des fins plus profondes qu’il ne pourrait paraître. [less ▲]

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See detailHybridations dans le film d’animation
Tomasovic, Dick ULg

Conference (1999, January 11)

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See detailLes hybridations interspécifiques dans le genre Phaseolus: sélection des génotypes compatibles et caractéristiques des hybrides interspécifiques
Silué, S.; Fofana, I.J.; Diarassouba, N. et al

in Agronomie Africaine (2014), 26(3), 193-204

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See detailHybride Modellierung deichbruchinduzierter Strömungen
Roger, Sebastian; Dewals, Benjamin ULg; Schüttrumpf, Holger

in Heimerl, S.; Meyer, H. (Eds.) Vorsorgender und nachsorgender Hochwasserschutz (2014)

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See detailHybride Modellierung deichbruchinduzierter Strömungen
Roger, Sebastian; Dewals, Benjamin ULg; Schüttrumpf, Holger

in Wasserwirtschaft (2012), (12), 31-37

Experimentelle Modellversuche und numerische Simulationen ergänzen sich gegenseitig in einem hybriden Untersuchungskonzept für deichbruchinduzierte Strömungen. Unter Berücksichtigung der ... [more ▼]

Experimentelle Modellversuche und numerische Simulationen ergänzen sich gegenseitig in einem hybriden Untersuchungskonzept für deichbruchinduzierte Strömungen. Unter Berücksichtigung der deichbruchspezifischen Randbedingungen werden in Laborversuchen charakteristische Strömungsfeldgrößen mit hochgenauer Messtechnik detailliert aufgezeichnet. Die korrespondierenden numerischen Modellierungen werden auf Basis der zweidimensional tiefengemittelten Flachwassergleichungen sowie der Reynolds-gemittelten Navier-Stokes-Gleichungen durchgeführt. [less ▲]

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See detailHybridisation efficiency in generating Hybridisation efficiency in generating invasive progeny in the alien Fallopia (Polygonaceae) complex
Saad, Layla ULg; Tiébré, Marie-Solange; Hardy, Olivier et al

Poster (2007, November 16)

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See detailHybridization And Morphogenetic Variation In The Invasive Alien Fallopia (Polygonaceae) Complex In Belgium
Tiebre, Ms.; Bizoux, Jean-Philippe ULg; Hardy, Oj. et al

in American Journal of Botany (2007), 94(11), 1900-1910

The invasive alien knotweeds, Fallopia spp. (Polygonaceae), are some of the most troublesome invasive species in Europe and North America. Invasive success in Fallopia may be enhanced by multiple ... [more ▼]

The invasive alien knotweeds, Fallopia spp. (Polygonaceae), are some of the most troublesome invasive species in Europe and North America. Invasive success in Fallopia may be enhanced by multiple hybridization events. We examined the pattern of hybridization and its evolutionary consequences in Belgium with a concerted analysis of ploidy levels (chromosome counts and flow cytometry), morphological variation, and genetic variation (RAPDs). At least four taxa with different ploidy levels were part of the pattern of invasion in Belgium. Hybrid F.3bohemica with various chromosome numbers restored the genotypic diversity that was lacking in the parental species. Hybrid genotypes were mainly assigned to a specific genetic pool and not to a mixture between the genetic pools of the putative parental species as would be expected for hybrids. Parental species and hexaploid hybrids differed significantly for a set of well-defined morphological characters, enabling future researchers to distinguish these taxa. On the basis of our results, the importance of hybridization has probably been underestimated in large parts of the adventive range of alien Fallopia species, pointing to the need for concerted molecular and morphological analyses in the study of the evolutionary consequences of hybridization. [less ▲]

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See detailHybridization and polyploidy: driving forces of evolutionary processes in the Fallopia spp complex
Vanderhoeven, Sonia ULg; Saad, Layla ULg; Tiébré, Marie-Solange et al

Conference (2006)

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See detailHybridization And Sexual Reproduction In The Invasive Alien Fallopia (Polygonaceae) Complex In Belgium
Tiebre, Ms.; Vanderhoeven, Sonia ULg; Saad, Layla ULg et al

in Annals of Botany (2007), 99(1), 193-203

† Background and Aims The knotweed complex, Fallopia spp. (Polygonaceae), belongs to the most troublesome invasive species in Europe and North America. Vegetative regeneration is widely recognized as the ... [more ▼]

† Background and Aims The knotweed complex, Fallopia spp. (Polygonaceae), belongs to the most troublesome invasive species in Europe and North America. Vegetative regeneration is widely recognized as the main mode of reproduction in the adventive regions. However, the contribution of sexual reproduction to the success of these invasive species has only been detailed for the British Isles. An examination was made as to how hybridization may influence the sexual reproduction of the complex in Belgium and to determine how it may contribute to the dispersal of the species. † Methods Studies were made of floral biology, reproductive success, seed rain, seed bank, germination capacity, seedling survival and dispersal capacity in order to characterize the reproductive biology of the species. Moreover, chromosome counts and flow cytometry were used to assess the hybrid status of seedlings produced by sexual reproduction. † Key Results In the area investigated, extensive sexual reproduction by hybridization within the complex, including one horticultural species, was demonstrated. A small percentage of seeds may be dispersed outside the maternal clone (.16 m) allowing the formation of genetically differentiated individuals. Seed germination was possible even after a winter cold period. †Conclusions The extensive sexual reproduction by hybridization could further contribute to the dramatic invasive success of knotweeds in Belgium and should not be underestimated when considering control and management measures. [less ▲]

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See detailhybridization behaviour between two common European cyprinid fish species - silver bream Blicca bjoerkna and common bream Abramis brama - in a controlled environment
Nzau Matondo, Billy; Ovidio, Michaël ULg; Philippart, Jean-Claude ULg et al

in Animal Biology (2009), 59

The egg release–mating comparison, heterospecific matings and mating success under two hybridization conditions – (i) mixing one sex per species and (ii) mixing both sexes from each species – were ... [more ▼]

The egg release–mating comparison, heterospecific matings and mating success under two hybridization conditions – (i) mixing one sex per species and (ii) mixing both sexes from each species – were investigated to determine whether silver bream Blicca bjoerkna and common bream Abramis brama can hybridize in nature. The results revealed that non-matings in hybridization experiments of silver bream females × common bream males can be explained by territorial and aggressiveness activities observed in common bream. In common bream females × silver bream males, heterospecific matings were observed but their numbers were signifi cantly lower than the spawning numbers, and in this experiment, a female mated with one to four heterospecifi c males. In mixing both sexes from both species, similar spawning – mating numbers were observed but heterospecific matings accounted for only 27% of the total matings, with 24% accounting for heterospecifi c matings between common bream females and silver bream males, directly or by opportunism. Mating success was characterized by the occurrence of fertilized eggs after matings. Natural hybridization occurred preferentially between common bream females and silver bream males. [less ▲]

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See detailHybridization capture using short PCR products enriches small genomes by capturing flanking sequences (CapFlank)
Tsangaras, K.; Wales, N.; Sicheritz-Pontén, T. et al

in PLoS ONE (2014), 9(10),

Solution hybridization capture methods utilize biotinylated oligonucleotides as baits to enrich homologous sequences from next generation sequencing (NGS) libraries. Coupled with NGS, the method generates ... [more ▼]

Solution hybridization capture methods utilize biotinylated oligonucleotides as baits to enrich homologous sequences from next generation sequencing (NGS) libraries. Coupled with NGS, the method generates kilo to gigabases of high confidence consensus targeted sequence. However, in many experiments, a non-negligible fraction of the resulting sequence reads are not homologous to the bait. We demonstrate that during capture, the bait-hybridized library molecules add additional flanking library sequences iteratively, such that baits limited to targeting relatively short regions (e.g. few hundred nucleotides) can result in enrichment across entire mitochondrial and bacterial genomes. Our findings suggest that some of the off-target sequences derived in capture experiments are non-randomly enriched, and that CapFlank will facilitate targeted enrichment of large contiguous sequences with minimal prior target sequence information. [less ▲]

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See detailHybridization effects in U2T2X compounds: Magnetic structures of U2Rh2Sn and U2Ni2In
Nakotte, Heinz; Purwanto, A.; Robinson, R. A. et al

in Physical Review. B : Condensed Matter (1996), 53(6), 3263-3271

The tetragonal intermetallic compounds U2Ni2In and U2Rh2Sn have been studied by means of specific-heat, electrical-resistivity, and neutron-diffraction techniques. At low temperatures, both compounds ... [more ▼]

The tetragonal intermetallic compounds U2Ni2In and U2Rh2Sn have been studied by means of specific-heat, electrical-resistivity, and neutron-diffraction techniques. At low temperatures, both compounds order antiferromagnetically in a magnetic unit cell doubled along the c axis, and we find 5f moments of 0.60 and 0.38 Bohr magneton/U atom for U2Ni2In and U2Rh2Sn, respectively. For U2Ni2In, our refinement also indicates a possible Ni moment of 0.37 Bohr magneton perpendicular to the U moments. We discuss the development of the 5f moments together with findings on other isostructural U2T2X (T=transition metal, X=In, Sn) compounds, and confirm that the trends expected due to 5f-ligand hybridization also hold for this family of uranium compounds. Our analysis indicates different arrangements of the 5f moments in the two compounds (noncollinear arrangement within the basal plane for U2Ni2In and collinear arrangement along the c axis for U2Rh2Sn), although both compounds have nearest-neighbor U-U distances along the c axis. This would mean that the magnetocrystalline anisotropy in U2T2X compounds is not determined by nearest-neighbor U-U links alone [less ▲]

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