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Figure 6 in Three marine haptorid ciliates from northern China: Paraspathidium apofuscum n. sp., Trachelotractus entzi (Kahl, 1927) Foissner, 1997 and Apotrachelotractus variabialis Long, Song and Warren, 2009 (Protozoa, Ciliophora)
No full textFigure 6. Apotrachelotractus variabialis Long, Song and Warren, 2009 after protargol staining (A, B, D–I) and from live cells (C). (A, B) infraciliature, arrow marks the contractile vacuole pore; (C) fully-extended individuals; (D, E) to show extrusomes (arrowheads) and macronuclear nodules, double-arrowheads indicate nematodesmata, arrow marks the contractile vacuole pore; (F–I) structure of anterior parts, arrows indicate the circumoral kinety, arrowheads show the suture on the "neck". Notes: B, brush kinety; PB, pharyngeal basket; scale bars: 60 µm (A); 45 µm (D); 30 µm (F, H).Published as part of Long, Hongan, Song, Weibo, Al-Rasheid, Khaled A. & Gong, Jun, 2009, Three marine haptorid ciliates from northern China: Paraspathidium apofuscum n. sp., Trachelotractus entzi (Kahl, 1927) Foissner, 1997 and Apotrachelotractus variabialis Long, Song and Warren, 2009 (Protozoa, Ciliophora), pp. 1749-1761 in Journal of Natural History 43 (29-32) on page 1757, DOI: 10.1080/00222930902781038, http://zenodo.org/record/521671
FIGURE 11 in Taxonomic studies on three marine species of Frontonia from northern China: F. didieri n. sp., F. multinucleata n. sp. and F. tchibisovae Burkovsky, 1970 (Ciliophora: Peniculida)
No full textFIGURE 11. Small subunit rRNA gene sequence of Frontonia lynni (F. l y n n i) aligned with the sequence of F. d i d i e r i (F. didieri) and F. tchibisovae (F. t c h i b i s o.). Numbers at the end of lines indicate the number of nucleotides. The differences in sequence length were compensated for by introducing alignment gaps (-) in the sequences. Matched sites are marked with dots.Published as part of Long, Hongan, Song, Weibo, Al-Rasheid, Khaled A. S. & Wang, Yangang, 2008, Taxonomic studies on three marine species of Frontonia from northern China: F. didieri n. sp., F. multinucleata n. sp. and F. tchibisovae Burkovsky, 1970 (Ciliophora: Peniculida), pp. 35-50 in Zootaxa 1687 on page 49, DOI: 10.5281/zenodo.18052
FIGURE 2 in Frontonia lynni n. sp., a new marine ciliate (Protozoa, Ciliophora, Hymenostomatida) from Qingdao, China
No full textFIGURE 2. Ventral views (A, C, E, G) and oral field (B, D, F, H) of Frontonia ambigua (A, B, from Dragesco & DragescoKernéis 1986), Frontonia marisalbi (C, D from Burkovsky, 1970) and Frontonia tchibisovae (E, F, from Burkovsky, 1970) after silver nitrate impregnation. Frontonia frigida (G, H, from Petz et al., 1995; G after protargol impregnation, H after silver nitrate impregnation). Scale bars = 30 µm.Published as part of Long, Hongan, Song, Weibo, Gong, Jun, Hu, Xiaozhong, Ma, Honggang, Zhu, Mingzhuang & Wang, Mei, 2005, Frontonia lynni n. sp., a new marine ciliate (Protozoa, Ciliophora, Hymenostomatida) from Qingdao, China, pp. 57-64 in Zootaxa 1003 (1) on page 61, DOI: 10.11646/zootaxa.1003.1.4, http://zenodo.org/record/504875
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
FIGURE 3. Frontonia didieri n in Taxonomic studies on three marine species of Frontonia from northern China: F. didieri n. sp., F. multinucleata n. sp. and F. tchibisovae Burkovsky, 1970 (Ciliophora: Peniculida)
No full textFIGURE 3. Frontonia didieri n. sp. from living cells (A, B, E, I, J), after silver carbonate (G, H), silver nitrate (C, D, K) and protargol (F) impregnations. (A) Ventral view, to show the typical body shape. (B, G) Anterior ventral part. Note the buccal cavity (arrow) and the extrusomes (arrowheads) in B. (C) Ventral view of a specimen. (D) To show the silverline system, arrow marks the CVP. (E) A pressed cell filled with diatoms. (F) Oral apparatus. Arrows indicate the vestibular kineties, arrowheads mark the posterior ends of kinety rows in P1, while double-arrowheads refer to the paroral membrane. (H) The macronucleus. (I) Arrow marks the CVP. (J) To show the contractile vacuole and the collecting canals (arrowheads). (K) To show the detail of the structure of P3. Note the shortest (arrowhead), the median-long (doublearrowheads) and the longest rows (arrow). Scale bars in (C) = 30 µm; in (J) = 40 µm; in (E) = 50 µm; in (A) = 70 µm.Published as part of Long, Hongan, Song, Weibo, Al-Rasheid, Khaled A. S. & Wang, Yangang, 2008, Taxonomic studies on three marine species of Frontonia from northern China: F. didieri n. sp., F. multinucleata n. sp. and F. tchibisovae Burkovsky, 1970 (Ciliophora: Peniculida), pp. 35-50 in Zootaxa 1687 on page 40, DOI: 10.5281/zenodo.18052
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
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