Révision taxonomique et morphologie pollinique du genre <i>Gongrodiscus</i> (Sapindaceae).

Une révision du genre Gongrodiscus Radlk. (Sapindaceae), endémique de la Nouvelle-Calédonie, est présentée. Une espèce nouvelle, G. bilocularis, est décrite. Une clef et les descriptions des trois espèces sont données. De plus, la morphologie du pollen est décrite.The endemic New Caledonian genus Gongrodiscus Radlk. (Sapindaceae) is revised. One new species is described: G. bilocularis. A key to the three species and descriptions are given. In addition, the morphology of the pollen is described

Worst-case performance analysis of synchronous dataflow scenarios

Synchronous Dataflow (SDF) is a powerful analysis tool for regular, cyclic, parallel task graphs. The behaviour of SDF graphs however is static and therefore not always able to accurately capture the behaviour of modern, dynamic dataflow applications, such as embedded multimedia codecs. An approach to tackle this limitation is by means of scenarios. In this paper we introduce a technique and a tool to automatically analyse a scenario-aware dataflow model for its worstcase performance. A system is specified as a collection of SDF graphs representing individual scenarios of behaviour and a finite state machine that specifies the possible orders of scenario occurrences. This combination accurately captures more dynamic applications and this way provides tighter results than an existing analysis based on a conservative static dataflow model, which is too pessimistic, while looking only at the ‘worst-case ’ individual scenario, without considering scenario transitions, can be too optimistic. We introduce a formal semantics of the model, in terms of (max, +) linear system-theory and in particular (max, +) automata. Leveraging existing results and algorithms from this domain, we give throughput analysis and state space generation algorithms for worst-case performance analysis. The method is implemented in a tool and the effectiveness of the approach is experimentally evaluated

The type of Palmocarpon cretaceum Miq., 1853 described from the Cretaceous of the Sint-Pietersberg, The Netherlands, is an Eocene Nypa burtinii (Brongn.) Ettingsh., 1879, most likely from the Brussels area, Belgium

The study of a few putative palm macrofossils from the type area of the Maastrichtian Stage appeared to have important implications for understanding the composition of the fossil flora of the area, as well as for the nomenclature of fossil palm fruits in general. The type specimen of the palm fruit Palmocarpon cretaceum Miq., 1853 described from the Cretaceous of the Maastrichtian type area belongs to Nypa burtinii (Brongn.) Ettingsh., 1879 from the Eocene, most probably from the Brussels area. The material mentioned by Ubaghs (1885a, b, 1887) as Palmocarpon cretaceum does not represent fossil palm fruits. Therefore, palm pollen is the only evidence for the presence of palms (Arecaceae, or Palmae, excl. Nypa) in the Cretaceous of the Maastrichtian type area. Palmocarpon Miq., 1853 is proposed here as a nomen rejiciendum, and the genus Palmocarpon Lesq., 1878 as a nomen conservandum

The type of Palmocarpon cretaceum Miq., 1853 described from the Cretaceous of the Sint-Pietersberg, The Netherlands, is an Eocene Nypa burtinii (Brongn.) Ettingsh., 1879, most likely from the Brussels area, Belgium

The study of a few putative palm macrofossils from the type area of the Maastrichtian Stage appeared to have important implications for understanding the composition of the fossil flora of the area, as well as for the nomenclature of fossil palm fruits in general. The type specimen of the palm fruit Palmocarpon cretaceum Miq., 1853 described from the Cretaceous of the Maastrichtian type area belongs to Nypa burtinii (Brongn.) Ettingsh., 1879 from the Eocene, most probably from the Brussels area. The material mentioned by Ubaghs (1885a, b, 1887) as Palmocarpon cretaceum does not represent fossil palm fruits. Therefore, palm pollen is the only evidence for the presence of palms (Arecaceae, or Palmae, excl. Nypa) in the Cretaceous of the Maastrichtian type area. Palmocarpon Miq., 1853 is proposed here as a nomen rejiciendum, and the genus Palmocarpon Lesq., 1878 as a nomen conservandum