1,721,338 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Stegana (Steganina) zhuoma Cui & Chen, sp. nov.
No full textStegana (Steganina) zhuoma Cui & Chen, sp. nov. (Figs. 14G, 14H, 65D–F) Diagnosis. This species is similar to S. (S.) zaduo sp. nov. in the shape of female terminalia (Fig. 65), but can be distinguished from the latter by having the yellowish katepisternum brown on anterior corner (Fig. 14H); the 8th sternite nearly squared, with several setae and much pubescence on distolateral 1/3 (Fig. 65E). Description. Female: First flagellomere brown. Clypeus black. Mesonotum black medially, brown laterally (Fig. 14G). Scutellum black, yellow at tip (Fig. 14G). Halter mostly white (Fig. 14H). Fore femur with a row of 3 long, strong setae on distal part of posteroventral surface. All abdominal tergites dark brown to black (Fig. 14G, H); sternites brown, about 2 times as wide as long. Female terminalia (Fig. 65D–F): Epiproct with several setae, lacking pubescence (Fig. 65D). Cercus and hypoproct with numerous setae and much pubescence (Fig. 65D, F). Eighth sternite glabrous on basal 2/3 (Fig. 65E). Measurements and indices. BL = 2.70 mm in holotype, ThL = 1.45 mm, WL = 2.92 mm, WW = 1.26 mm, arb = 7/5, avd = 0.85, adf = 1.17, flw = 2.22, FW/HW = 0.39, ch/o = 0.25, prorb = 1.02, rcorb = 0.76, vb = 0.74, dcl = 0.48, presctl = 0.57, sctl = damaged, sterno = 0.77, orbito = 1.90, dcp = 0.32, sctlp = 1.45, C = 1.66, 4c = 1.35, 4v = 1.95, 5x = 1.45, ac = 12.89, M = 0.71, C3F = 0.63. Type material. Holotype ♀ (SCAU, No. 125789, DNA #2757), Tongmai, Bomi, Xizang, 30°06'00''N, 95°05'00''E, alt. 2000m, 11.x.2010, ex tree trunk, L. Wang. Distribution. China (Xizang). Etymology. From the word " zhuoma " in Zang language from the Zang nationality living in Xizang, China, referring to women.Published as part of WANG, YA-LIAN, LI, BING-XUE, CUI, MENG-DI, ZHANG, YUAN, WANG, LE, ZHANG, CAI-HONG, TSAUR, SHUN-CHERN, CHEN, HONG-WEI & HUANG, JIA, 2023, Revision of the subgenus Stegana (Steganina) from China, with assessment of species delimitation using DNA barcodes (Diptera, Drosophilidae), pp. 1-109 in Zootaxa 5250 (1) on page 102, DOI: 10.11646/zootaxa.5250.1.1, http://zenodo.org/record/770565
Stegana (Steganina) daiya Cui & Chen, sp. nov.
No full textStegana (Steganina) daiya Cui & Chen, sp. nov. (Figs. 7I, 7J, 35D–F) Diagnosis. Eighth sternite broadened, rounded distally, with several sensilla, setae, and some pubescence distolaterally (Fig. 35E). Description. Female: Clypeus brownish. Mesonotum dark brown medially, brown laterally (Fig. 7I, J). Katepisternum yellow, slightly greyish below (Fig. 7J). Scutellum black (Fig. 7I). Halter mostly grey. Fore femur with a row of 3 long setae on distal part of posteroventral surface. Abdominal tergites mostly black (Fig. 7I, J); sternites brownish, slightly wider than long. Female terminalia (Fig. 35D–F): Epiproct with several setae, lacking pubescence (Fig. 35D). Cercus with numerous setae and much pubescence (Fig. 35D). Hypoproct with numerous setae and much pubescence posteriorly (Fig. 35F). Measurements and indices. BL = 2.77 mm in holotype (2.81 in 1♀ paratype), ThL = 1.41 mm (1.45), WL = 2.67 mm (2.79), WW = 1.34 mm (1.28), arb = 6/4 (7/5), avd = 0.72 (0.86), adf = 0.77 (0.82), flw = 1.80 (1.67), FW/ HW = 0.40 (0.41), ch/o = 0.39 (0.47), prorb = 1.47 (1.42), rcorb = 1.16 (0.96), vb = 0.50 (1.06), dcl = 0.88 (0.56), presctl = 0.59 (0.56), sctl = 0.91 (1.14), sterno = damaged (0.76), orbito = 2.07 (2.00), dcp = 0.19 (0.18), sctlp = 1.17 (1.49), C = 1.93 (2.09), 4c = 1.30 (1.40), 4v = 2.23 (2.49), 5x = 2.07 (2.00), ac = 9.33 (9.46), M = 0.72 (0.76), C3F = 0.66 (0.72). Type materials. Holotype ♀ (SCAU, No. 125608, DNA #2565), CHINA: Fengtongzhai, Baoxing, Sichuan, 30°32'42''N, 102°54'24''E, alt. 1700m, 19.ix.2005, ex tussock, H.W. Chen. Paratype: 1♀ (SCAU, No. 125609, DNA #547), other data same as holotype. Distribution. China (Sichuan). Etymology. From the word " daiya " in Qiang language from the Qiang nationality living in Sichuan, China, referring to the meaning "a mysterious place".Published as part of WANG, YA-LIAN, LI, BING-XUE, CUI, MENG-DI, ZHANG, YUAN, WANG, LE, ZHANG, CAI-HONG, TSAUR, SHUN-CHERN, CHEN, HONG-WEI & HUANG, JIA, 2023, Revision of the subgenus Stegana (Steganina) from China, with assessment of species delimitation using DNA barcodes (Diptera, Drosophilidae), pp. 1-109 in Zootaxa 5250 (1) on page 66, DOI: 10.11646/zootaxa.5250.1.1, http://zenodo.org/record/770565
Stegana (Steganina) curvitabulata Cui & Chen, sp. nov.
No full textStegana (Steganina) curvitabulata Cui & Chen, sp. nov. (Figs. 7G, 7H, 35A–C) Diagnosis. Eighth sternite broadened, curlied laterally, with dense setae along posterior margin (Fig. 35B). Remarks. The terminalia of the only male specimen was partly damaged (probably eaten by a cockroach) and undescribed. Description. Male and female: First flagellomere brown. Clypeus brownish medially, yellow laterally. Mesonotum dark brown medially, brownish laterally (Fig. 7G). Katepisternum yellowish (Fig. 7H). Scutellum dark brown (Fig. 7G). Halter mostly grey (Fig. 7H). Fore femur with a row of 4 or 5 sturdy setae on distal part of posteroventral surface. Abdominal tergites dark brown to black (Fig. 7G, H); sternites brown, about 2 times as wide as long. Female terminalia (Fig. 35A–C): Epiproct with several small sensilla, lacking seta and pubescence (Fig. 35A). Cercus and hypoproct with numerous setae and much pubescence (Fig. 35A, C). Measurements and indices. BL = 3.31 mm in holotype (2.84 in 1♂ paratype), ThL = 1.61 mm (1.49), WL = 3.13 mm (2.52), WW = 1.26 mm (1.16), arb = 9/5 (9/5), avd = 0.68 (0.83), adf = 1.59 (1.53), flw = 2.59 (2.68), FW/ HW = 0.33 (0.34), ch/o = 0.29 (0.23), prorb = 0.86 (0.91), rcorb = 0.75 (0.62), vb = 0.89 (0.74), dcl = 0.67 (0.63), presctl = 0.79 (0.76), sctl = 1.54 (2.13), sterno = 0.72 (0.91), orbito = 1.74 (1.66), dcp = 0.38 (0.37), sctlp = 1.67 (1.47), C = 1.90 (1.71), 4c = 1.30 (1.06), 4v = 2.06 (1.71), 5x = 1.49 (1.29), ac = 16.83 (10.44), M = 0.74 (0.55), C3F = 0.63 (0.66). Type materials. Holotype ♀ (SCAU, No. 125498, DNA #2689), CHINA: Jianfengling, Ledong, Hainan, 18°41'50''N, 108°50'04''E, alt. 750m, 17.iv.2008, ex tussock, J.J. Gao. Paratype: 1♂ (SCAU, No. 125499, DNA #802), other data same as holotype. Distribution. China (Hainan). Etymology. A combination of the Latin words " curvus " (= curved) and " tabulatus " (= plate), referring to the lateally curlied 8th sternite.Published as part of WANG, YA-LIAN, LI, BING-XUE, CUI, MENG-DI, ZHANG, YUAN, WANG, LE, ZHANG, CAI-HONG, TSAUR, SHUN-CHERN, CHEN, HONG-WEI & HUANG, JIA, 2023, Revision of the subgenus Stegana (Steganina) from China, with assessment of species delimitation using DNA barcodes (Diptera, Drosophilidae), pp. 1-109 in Zootaxa 5250 (1) on pages 65-66, DOI: 10.11646/zootaxa.5250.1.1, http://zenodo.org/record/770565
Variations on the Author
Full text link“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
Full text linkWe 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
Full text linkWe 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
Stegana (Steganina) bimai Cui & Chen, sp. nov.
No full textStegana (Steganina) bimai Cui & Chen, sp. nov. (Figs. 6E, 6F, 29) Diagnosis. This species closely resembles S. (S.) clavispinula Chen & Chen, 2009 in the shape of epandrium, surstylus, cercus (as figs. 1, 2 in Chen & Chen 2009, Fig. 29A, B), and aedeagal sheath in ventral view (as fig. 6 in Chen & Chen 2009, Fig. 29E), but can be distinguished from the latter by having the surstylus with 1 peg-like tooth near distal margin (Fig. 29B); the aedeagus expanded distally in ventral view (Fig. 29D), lacking serrated process in median process (Fig. 29C, D); the subepandrial sclerite slightly X-shaped (Fig. 29G). Description. Male and female: First flagellomere brown. Clypeus yellow. Mesonotum brown medially, yellow laterally (Fig. 6E). Scutellum brown, yellow along margin (Fig. 6E). Katepisternum yellowish (Fig. 6F). Halter mostly grey (Fig. 6F). Fore femur with 3 thin, long setae on distal part of posteroventral surface. Abdominal tergites brown (Fig. 6E, F); sternites brownish, about 2 times as wide as long in male, about 3 times as wide as long in female. Male terminalia (Fig. 29): Epandrium with ca. 15 setae on dorsal to posterior portions per side (Fig. 29A). Surstylus slightly squared, with minute, serrated processes distally and several setulae near distal margin (Fig. 29A, B). Cercus lacking pubescence (Fig. 29A). Hypandrium expanded anteromedially (Fig. 29C, D). Pregonite small, with 3 sensilla (Fig. 29C, D). Aedeagus with some pubescence distoventrally (Fig. 29C). Aedeagal sheath with several minute, serrated processes distally (Fig. 29E, F). Measurements and indices. BL = 2.63 mm in holotype (2.52–2.61 in 2♂, 2.48–2.65 in 2♀ paratypes), ThL = 1.31 mm (1.31–1.34 in ♂, 1.26–1.28 in ♀), WL = 2.32 mm (2.28–2.51 in ♂, 2.31–2.61 in ♀), WW = 1.00 mm (0.97–1.01 in ♂, 0.95–1.08 in ♀), arb = 6/4 (7/4–5), avd = 0.65 (0.84–0.93), adf = 1.12 (1.08–1.20), flw = 2.12 (1.87–2.39), FW/HW = 0.40 (0.36–0.44), ch/o = 0.26 (0.24–0.27), prorb = 0.68 (0.87–1.07), rcorb = 0.71 (0.60– 0.71), vb = 0.60 (0.61–0.89), dcl = damaged (0.55–0.72), presctl = damaged (0.46–0.66), sctl = 2.19 (2.17–2.89), sterno = 0.39 (0.47–0.93), orbito = 1.80 (1.80–1.98), dcp = 0.30 (0.28–0.36), sctlp = 1.78 (1.50–1.73), C = 1.67 (1.72–1.98), 4c = 1.17 (1.22–1.28), 4v = 1.83 (1.88–2.19), 5x = 1.81 (1.44–1.86), ac = 15.17 (9.00–13.14), M = 0.74 (0.61–0.71), C3F = 0.55 (0.60–0.64). Type materials. Holotype ♂ (SCAU, No. 125744, DNA #2706), CHINA: Muyiji Park, Ximeng, Yunnan, 22°37'23''N, 99°36'11''E, alt. 1100m, 16.iv.2018, ex tree trunk, L. Zhu. Paratypes: 2♀ (SCAU, Nos. 125745, 46), other data same as holotype; 2♂ (SCAU, Nos. 125747, 48, DNA #2727), Menglun, Mengla, Yunnan, 21°47'29''N, 101°22'59''E, alt. 860m, 24.xii.2003, ex tree trunk, H.W. Chen. Distribution. China (Yunnan). Etymology. From the word " bimai " in Dai language from the Dai nationality living in Yunnan, China, referring to the Water-Sprinkling Festival (new year).Published as part of WANG, YA-LIAN, LI, BING-XUE, CUI, MENG-DI, ZHANG, YUAN, WANG, LE, ZHANG, CAI-HONG, TSAUR, SHUN-CHERN, CHEN, HONG-WEI & HUANG, JIA, 2023, Revision of the subgenus Stegana (Steganina) from China, with assessment of species delimitation using DNA barcodes (Diptera, Drosophilidae), pp. 1-109 in Zootaxa 5250 (1) on pages 57-59, DOI: 10.11646/zootaxa.5250.1.1, http://zenodo.org/record/770565
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