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Pabstiella pseudotrifida L. Kollmann & D. R. Couto (Orchidaceae), a new species from Espírito Santo, Brazil
No full textKollmann, Ludovic Jean Charles, Couto, Dayvid Rodrigues (2014): Pabstiella pseudotrifida L. Kollmann & D. R. Couto (Orchidaceae), a new species from Espírito Santo, Brazil. Candollea 69 (1): 21-24, DOI: 10.15553/c2014v691a
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Pabstiella pseudotrifida L. Kollmann & D. R. Couto 2014, spec. nova
No full textPabstiella pseudotrifida L. Kollmann & D. R. Couto, spec. nova (Fig. 1). Typus: BRAZIL. Edo Espírito Santo: Mimoso do Sul, Santa Luzia, ca., 7.I.2005, fl., D. R. Couto 229 (holo-: MBML). Pabstiella pseudotrifida is very similar to P. trifida, but can be distinguished by the subtruncate to truncate petals, and the smooth lip which is free of callosities and truncate to rounded at apex. Plant epiphytic, 2-4 cm tall, caespitose, erect. Roots whitish, terete, flexuose, glabrous. Ramicauls 5.5-7 mm long., green, cylindrical, enclosed by tubular, acute, pale green sheaths that are paleaceous and whitish when dried. Leaves 16-28 X 3-3.5 mm, 0.8-1.6 mm thick, green, linear-elliptic, the base subpetiolate, the apex minutely 3-dentate, Inflorescence a congested, successively several-flowered raceme, 1.2-1.7 cm long, shorter than the leaves. Floral bracts ca. 1.5 mm long, translucent, pale green, tubular, acute. Flowers resupinate, glabrous. Pedicels 1.5-2 mm long. Ovary 1-1.2 mm long. Sepals yellow, translucent, with orange margins, 3-veined, carinate abaxially, the dorsal sepal 5-5.5 X 1.9-2 mm, oblong-elliptic, obtuse, the laterals sepal 4-4.1 X 1.4-1.5 mm, connate to above the middle into a oblong synsepal with acute apices, forming a small mentum below the tip of the column-foot. Petals 2.6-3.3 X 1.2-1.4 mm, spathulate, curved, 3-veined, translucent yellow with orange veins, slightly carinate abaxially, subtruncate to truncate. Lip 2.5-2.6 X 0.91 mm, orange, slightly purplish-lilac at base, green at the attachment with the column-foot, 3-lobed, unguiculate, 3-veined, the midvein longer than the laterals, smooth, free of callosities, the lateral lobes more or less below the middle, erect, broadly rounded, the apical lobe truncate to rounded. Column ca. 2.5 mm long, greenish, winged above the middle, white and 3-dentate at apex, the teeth straight and acute; column-foot 1.3-1.8 mm long with two callosities at base the apex papillose. Anther ca. 0.7 mm long, yellowishwhite; pollinia two, yellow. Capsule unknown. Etymology. – The specific epithet refers to its similarity to P. trifida (Lindl.) Luer. Habitat, distribution. – This species is apparently endemic to the Atlantic forest of southern Espírito Santo, growing as an epiphyte in dense rainforest remnants, from 800 to 1600 m altitude. It is partially protected in the mountain forests of the Caparaó National Park (Fig. 2). Conservation status. – Due to the apparently endemic distribution of P. pseudotrifida, and on the basis of the extension of its occurrence in the State of Espírito Santo, which is estimated to be less than 500 km 2, it seems appropriate to include this new species in the “Endangered” (EN) category (B2a(iii)), according to the IUCN (2001). Taxonomical notes. – Pabstiella pseudotrifida is most similar to P. trifida, from which it may be distinguished by its petal and lip morphology. In P. pseudotrifida the petals are subtruncate or truncate, and the lip is smooth, free of callosities, truncate or rounded at apex, with side lobes above the middle. In P. trifida, the petals are obtuse or acute, the lip is papillose or verrucose, the side lobes are near or below the middle, and the disc is shallowly channelled between a pair of verrucose, intramural calli. Paratypi. – BRAZIL. Edo Espírito Santo: Divino de São Lourenço, Patrimônio da Penha, Dense Ombrofilous Forest, border of Caparaó Nacional Park, ca. 1100 m, 20.III.2009, fl., D. R. Couto 1433 (VIES); Ibitirama, Caparaó Nacional Park, Rio Santa Marta valley, ca. 1600 m, Altimontane Dense Ombrophilous Forest, 22.I.2013, fl., H. M. Dias, A. E. Silva & al. 827 (VIES); Castelo, Forno Grande, 1000 m, 10.V.2006, fl., A. Gussão s.n.; s.loc., fl. cult. 21.VII.2008, L. Kollmann & al. 11495, (MBML).Published as part of Kollmann, Ludovic Jean Charles & Couto, Dayvid Rodrigues, 2014, Pabstiella pseudotrifida L. Kollmann & D. R. Couto (Orchidaceae), a new species from Espírito Santo, Brazil, pp. 21-24 in Candollea 69 (1) on pages 22-24, DOI: 10.15553/c2014v691a3, http://zenodo.org/record/571397
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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