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Two interstitial species of the genus Semicytherura (Crustacea: Ostracoda) from Japan, with notes on their microhabitats
No full textYamada, Shinnosuke, Tanaka, Hayato (2013): Two interstitial species of the genus Semicytherura (Crustacea: Ostracoda) from Japan, with notes on their microhabitats. Zootaxa 3745 (4): 435-448, DOI: 10.11646/zootaxa.3745.4.
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
Semicytherura mukaishimensis Okubo 1980, sp. nov.
No full textSemicytherura mukaishimensis Okubo, 1980 (Figs 9−11) 1980 Semicytherura mukaishimensis sp. nov. – Okubo: 24-26, figs. 3 h −k, 10. 1982 Semicytherura elongata Ikeya & Hanai: 51, pl. 5, figs. 4, 5. 1985 Semicytherura elongata Ikeya & Hanai: Ikeya et al., 27, pl. 6, figs. 7, 10. 1988 Semicytherura miurensis (Hanai, 1957): Yajima, 1076-1077, pl. 1, fig. 11. 1992 Semicytherura enshuensis Ikeya & Hanai, 1982: Ikeya and Suzuki, 134-135, pl. 8, fig. 9. 1998 Semicytherura miurensis (Hanai, 1957): Yamane, 56-57, pl. 11, fig. 3. Type series. Holotype: adult male (MO- 561), left valve length 0.44 mm, height 0.18 mm, right valve length 0.44 mm, height 0.18 mm. Allotype: adult female (MO- 869), left valve length 0.42 mm, height 0.18 mm, right valve length 0.42 mm, height 0.19 mm. Paratype: adult male (MO- 564) left valve length 0.42 mm, height 0.18 mm, right valve length 0.42 mm, height 0.18 mm. One adult male (MO- 562) and three adult females (MO- 563, 571, 573) also examined in Okubo (1980). Light microscopic photographs and illustrations of type specimens (valves and appendages) shown in figures 3 and 10 of Okubo (1980). Additional specimens, six adult males (SUM-CO-2125, 2126, 2129, 2131, 2133, 2134) and four adult females (SUM-CO-2127, 2128, 2130, 2132). Type locality. Sand banks near Mukaishima Marine Biological Station, Hiroshima Prefecture (34 ° 21 '07"N, 133 ° 13 '02"E). Occurrence. All specimens analysed in this study were collected from Araihama, Kanagawa Prefecture (35 ° 15 ' 85 "N, 139 ° 61 ' 10 "E) on July 7 th 2012. Adult specimens were found abundantly with juvenile specimens from interstitial pore water of marine sediments. Dimensions. See Table 3. Length (µm) Height (µm) Width (µm) Diagnosis. Carapace oblong or sub-trapezoidal in lateral view. Short blunt caudal process situated at lower part of carapace. Carapace surface covered with fine reticulations and small puncta. Prominent ridge running from middle part of anterior margin, descending in posterior direction, and forming rounded ala in posteroventral part. Sixty-one pore systems per valve. Inside valve, lamella of prismatic layer (LPL) well developed in both male and female. Male copulatory organ bearing oval basal capsule and thick oblong distal lobe. One long clasping apparatus with blunt top. Copulatory duct long, coiled. Description. Carapace outline and ornamentations (Figs 9, 10). Carapace small and thin, oblong or subtrapezoidal in lateral view (Fig. 9 A, B, E, F). Carapace oval in dorsal and ventral views (Fig. 10 A, B, C, D). Male carapace more elongate than female. Dorsal margin nearly straight and running in parallel to ventral margin. Short blunt caudal process situated at lower part of carapace. Fine reticulations and small puncta developed on carapace surface. Prominent ridge running from middle part of anterior margin, descending in posterior direction, and forming rounded ala in posteroventral part. Eye tubercle absent. Hingement (Fig. 10 G, H). Almost straight. Terminal sockets and smooth bar in left valve. Terminal teeth and groove in right valve. Muscle scars (Fig. 10 F). Vertical row of four adductor scars in ventromedian area. Upper three scars elongated, lowest scar sub-triangular. Two frontal scars and sub-tetragonal fulcral point situated in front of adductor muscle scars. Two unclear mandibular scars on LPL. Lamella of prismatic layer (Fig. 9 C, D, G, H). Broad in both anterior and posterior portions; slightly narrower in female. Pore systems (Fig. 11). Sixty-one pore systems per valve (Fig. 11). Long marginal pore canals running in both anterior and posterior portions (see fig. 10 in Okubo, 1980). Appendages. See Okubo (1980). Morphological characters of appendages in agreement with the type series and the specimens of this paper. Male copulatory organ used for identification (Fig. 10 E). Remarks. Semicytherura mukaishimensis Okubo, 1980 lives interstitially in the infralittoral zone of the marine beach with other interstitial ostracods (Table 2). Carapace outline and ornamentations of this species resemble those of S. miurensis (Hanai, 1957), but a prominent ala is noticeable in S. mukaishimensis. In addition, a caudal process is situated at the lower part of the carapace in S. mukaishimensis, while in S. miurensis it is present at the middle.Published as part of Yamada, Shinnosuke & Tanaka, Hayato, 2013, Two interstitial species of the genus Semicytherura (Crustacea: Ostracoda) from Japan, with notes on their microhabitats, pp. 435-448 in Zootaxa 3745 (4) on pages 444-447, DOI: 10.11646/zootaxa.3745.4.2, http://zenodo.org/record/21843
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
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