4,056 research outputs found
Mega-dams and extreme rainfall: disentangling the drivers of extensive impacts of a large flooding event on Amazon Forests.
No full textNa publicação: Marcelo Brilhante Medeiros
A new species of Mimosa L. ser. Bipinnatae DC. (Leguminosae) from the Cerrado: taxonomic and phylogenetic insights.
No full textMimosa carolina (Leguminosae), a new species from the Parque Nacional Chapada das Mesas, located in the northern limit of the Brazilian Cerrado, is described and illustrated. In addition, a phylogenetic reconstruction was performed to recover the position of this species in relation to the main clades of the genus Mimosa. This new species is assigned to sect. Habbasia ser. Bipinnatae and exhibits relevant morphological differences with all described species of this series, most notably the prostate habit, glabrous stems, and absence of internal spicules. Our results indicate that this new entity is clearly nested in a strongly supported clade with other striated-corolla species of ser. Bipinnatae. Therefore, ser.
Bipinnatae appears to be monophyletic, and a morphologically and ecologically cohesive group within Mimosa. An updated identification key for this series is provided.Fil: Morales, Matias. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Morón. Facultad de Agronomía y Ciencias Agroalimentarias; ArgentinaFil: Fortunato, Renee Hersilia. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Morón. Facultad de Agronomía y Ciencias Agroalimentarias; ArgentinaFil: Fragomeni Simon, Marcelo Embrapa Recursos Genéticos e Biotecnologia. Parque Estação Biológica; Brasi
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Stella F. Simon
No full textStella F. Simon and Miklos Bandy’s 1927–28 16mm film, Hands: The Life and Love of a Gentle Sex, is a short, experimental, feminist film whose aesthetic is drawn from American and European modernist photography movements and early avant-garde film traditions. The film’s underlying melodramatic narrative formula is complicated by the use of hands as both protagonists and as the central aspect of its modernist mise-en-scène. However, as with so many of the women who collaborated with men in the silent era, official credit did not go to Simon but to Bandy. The titles on all of the extant film prints credit Bandy as the film’s director, but attribute the idea to Simon. When it published four frame enlargements from the film, the British art film journal Close-Up equally attributed the film to him “after an idea by Stella F. Simon.” However, a review published the following month praised “Miss Simon’s” experiment with abstract, constructivist “scenery” (Blakeston 137). This August 1929 article, therefore, becomes the first source in new research that supports Simon as the film’s principle director (Richter 1971, 44; Barr 21; Horak 1995, 43-44; Wild 93-105). Little is known about Bandy, who was the author of one of the first articles in France to discuss Swedish abstract experimentalist Viking Eggeling’s short film Symphonie Diagonale (1924) in Germaine Dulac’s journal, Schémas. Modernist composer Marc Blitzstein wrote and performed the film’s original four-hand mechanical piano score and made a composite recording of it in March 1936 at the behest of RCA and the Museum of Modern Art (Lehrman 35)
Baixa diversificação citomolecular no gênero Stylosanthes Sw. (Papilionoideae, Leguminosae).
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Previous issue date: 202
FIGURE 3 in The census continues: Two new montane species of Mimosa (Leguminosae Mimosoideae) from Southeastern Brazil
No full textFIGURE 3. Glomerules and branch indument of Mimosa perplicata and related species. A, E. M. perplicata. B, F. M. acroconica. C, G. M. caliciadenia. D. M. setosa var. paludosa. All photos by L.M. Borges.Published as part of Borges, Leonardo Maurici, Simon, Marcelo Fragomeni & Pirani, José Rubens, 2014, The census continues: Two new montane species of Mimosa (Leguminosae Mimosoideae) from Southeastern Brazil, pp. 35-48 in Phytotaxa 177 (1) on page 40, DOI: 10.11646/phytotaxa.177.1.3, http://zenodo.org/record/514512
FIGURE 1. Mimosa perplicata. A. Habit. B. Branch. C in The census continues: Two new montane species of Mimosa (Leguminosae Mimosoideae) from Southeastern Brazil
No full textFIGURE 1. Mimosa perplicata. A. Habit. B. Branch. C. Adaxial surface of leaflet. D. Abaxial surface of leaflet. E. Branch detail showing the aculei and the indumentum composed by filiform and glandular setae. F. Detail of the rachis showing the interpinnal projection and triple indumentum of trichomes, filiform setae and glandular setae. G. Stipules at the apex of the branch. H. Glomerule with flowers in bud. I. Hermaphrodite flower. J. Calyx. Drawing by Marcelo T. Kubo.Published as part of Borges, Leonardo Maurici, Simon, Marcelo Fragomeni & Pirani, José Rubens, 2014, The census continues: Two new montane species of Mimosa (Leguminosae Mimosoideae) from Southeastern Brazil, pp. 35-48 in Phytotaxa 177 (1) on page 38, DOI: 10.11646/phytotaxa.177.1.3, http://zenodo.org/record/514512
FIGURE 5. Mimosa pseudoracemosa. A. Habit. B. Stipule. C. Leaf. D. Interpinnal projection. E. Paraphyllidia. F. and G. Leaflets with different shapes. H in Novelties in Mimosa sect. Mimosa ser. Mimosa subser. Polycephalae: a new species, new status, and new synonyms
No full textFIGURE 5. Mimosa pseudoracemosa. A. Habit. B. Stipule. C. Leaf. D. Interpinnal projection. E. Paraphyllidia. F. and G. Leaflets with different shapes. H. Detail of leaflets margins. I. Detail of the synflorescence. J. Bracteoles. K. Flower. L. Androecium. M. Detail of the filament. N. Anthers. O. Gynoecium. P. Detail of the ovary.Published as part of Mendes, Thainara Policarpo, Simon, Marcelo Fragomeni, Perez, Ana Paula Fortuna & Silva, Marcos José Da, 2021, Novelties in Mimosa sect. Mimosa ser. Mimosa subser. Polycephalae: a new species, new status, and new synonyms, pp. 121-138 in Phytotaxa 505 (2) on page 133, DOI: 10.11646/phytotaxa.505.2.1, http://zenodo.org/record/542534
Recall of random and distorted positions: Implications for the theory of expertise.
No full textThis paper explores the question, important to the theory of expert performance, of the nature and number of chunks that chess experts hold in memory. It examines how memory contents determine players' abilities to reconstruct (a) positions from games, (b) positions distorted in various ways and (c) and random positions. Comparison of a computer simulation with a human experiment supports the usual estimate that chess Masters store some 50,000 chunks in memory. The observed impairment of recall when positions are modified by mirror image reflection, implies that each chunk represents a specific pattern of pieces in a specific location. A good account of the results of the experiments is given by the template theory proposed by Gobet and Simon (in press) as an extension of Chase and Simon's (1973a) initial chunking proposal, and in agreement with other recent proposals for modification of the chunking theory (Richman, Staszewski & Simon, 1995) as applied to various recall tasks
Five seconds or sixty? Presentation time in expert memory
No full textThe template theory presented in Gobet and Simon (1996a, 1998) is based on the EPAM theory (Feigenbaum & Simon, 1984; Richman et al., 1995), including the numerical parameters that have been estimated in tests of the latter; and it therefore offers precise predictions for the timing of cognitive processes during the presentation and recall of chess positions. This paper describes the behavior of CHREST, a computer implementation of the template theory, in a task when the presentation time is systematically varied from one second to sixty seconds, on the recall of both game and random positions, and compares the model to human data. As predicted by the model, strong players are better than weak players with both types of positions. Their superiority with random positions is especially clear with long presentation times, but is also present after brief presentation times, although smaller in absolute value. CHREST accounts for the data, both qualitatively and quantitatively. Strong players’ superiority with random positions is explained by the large number of chunks they hold in LTM. Strong players’ high recall percentage with short presentation times is explained by the presence of templates, a special class of chunks. The model is compared to other theories of chess skill, which either cannot account for the superiority of Masters with random positions (models based on high-level descriptions and on levels of processing) or predict too strong a performance of Masters with random positions (long-term working memory)
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