1,720,976 research outputs found
Revision of the Amphilius jacksonii complex (Siluriformes: Amphiliidae), with the descriptions of five new species
No full textThomson, Alfred W., Page, Lawrence M., Hilber, Samantha A. (2015): Revision of the Amphilius jacksonii complex (Siluriformes: Amphiliidae), with the descriptions of five new species. Zootaxa 3986 (1): 61-87, DOI: 10.11646/zootaxa.3986.1.
A new species catfish, Amphilius pagei (Siluriformes: Amphiliidae) from Angola
No full textThomson, Alfred W., Swartz, Ernst R. (2018): A new species catfish, Amphilius pagei (Siluriformes: Amphiliidae) from Angola. Zootaxa 4420 (2): 292-300, DOI: 10.11646/zootaxa.4420.2.1
FIGURE 1. Euchiloglanis davidi, A, KIZ 795586, 153.8 in Two new species of the Glyptosternine catfish genus Euchiloglanis (Teleostei: Sisoridae) from southwest China with redescriptions of E. davidi and E. kishinouyei
No full textFIGURE 1. Euchiloglanis davidi, A, KIZ 795586, 153.8 mm SL; Yanjing, Baoxing Co., Sichuan Prov.; lateral view. B, SWFC 200204112, 155.0 mm SL; Muping, Baoxing Co., Sichuan Prov., China; dorsal, lateral and ventral views. Scale bar = 10 mm.Published as part of Zhou, Wei, Li, Xu & Thomson, Alfred W., 2011, Two new species of the Glyptosternine catfish genus Euchiloglanis (Teleostei: Sisoridae) from southwest China with redescriptions of E. davidi and E. kishinouyei, pp. 1-18 in Zootaxa 2871 on page 3, DOI: 10.5281/zenodo.20268
FIGURE 4 in A review of the genus Pareuchiloglanis (Sisoridae) from the Lancangjiang (upper Mekong River) with descriptions of two new species from Yunnan, China
No full textFIGURE 4. Map showing distributions of species of Pareuchiloglanis in the Lancangjiang (upper Mekong River) and Honghe (Red River or Song Hong) drainages.Published as part of Li, Xu, Zhou, Wei, Thomson, Alfred W., Zhang, Qing & Yang, Ying, 2007, A review of the genus Pareuchiloglanis (Sisoridae) from the Lancangjiang (upper Mekong River) with descriptions of two new species from Yunnan, China, pp. 1-19 in Zootaxa 1440 on page 6, DOI: 10.5281/zenodo.17597
FIGURE 4 in Two new species of the Glyptosternine catfish genus Euchiloglanis (Teleostei: Sisoridae) from southwest China with redescriptions of E. davidi and E. kishinouyei
No full textFIGURE 4. Collecting localities of examined specimens of Euchiloglanis. A symbol may represent several adjacent localities. 1, Min-Jiang, upper tributary of Yangtze River; 2, Qingyi-Jiang, branch of Dadu-He; 3, Dadu-He, branch of Min-Jiang; 4, Yalong-Jiang, upper tributary of Yangtze River; 5, Jinsha-Jiang, upper Yangtze River; 6, Jaling-Jiang, branch of Yangtze River; 7, Wu-Jang, branch of Yangtze River; 8, Yuan-Jiang, the upper Red River; 9, Lixian-Jiang, branch of Red River; 10, Mekong River; 11, Salween River.Published as part of Zhou, Wei, Li, Xu & Thomson, Alfred W., 2011, Two new species of the Glyptosternine catfish genus Euchiloglanis (Teleostei: Sisoridae) from southwest China with redescriptions of E. davidi and E. kishinouyei, pp. 1-18 in Zootaxa 2871 on page 8, DOI: 10.5281/zenodo.20268
Amphilius jacksonii
No full textAmphilius jacksonii complex The Amphilius jacksonii complex differs from all other species of the genus (A. atesuensis, A. brevis, A. caudosignatus, A. dimonikensis, A. grammatophorus, A. kakrimensis, A. korupi, A. lamani, A. longirostris, A. maesii, A. mamonekenensis, A. nigricaudatus, A. opisthophthalmus, A. platychir, A. pulcher, A. rheophilus) except A. lentiginosus by its mottled body coloration that includes dark saddles that are joined to one another laterally (vs. body mottled, dark saddles not joined laterally). It differs from A. lentiginosus by having the head and body without spots (vs. head and body heavily spotted) and by having fewer total gill rakers on the first gill arch (6–11, rarely 5 or 12 vs. 14–16). The A. jacksonii complex further differs from A. longirostris and A. opisthophthalmus by having 6 + 7 principal caudal-fin rays (vs. 7 + 8) and a well developed crenelated epidermal fold (vs. rudimentary fold), and further differs from A. brevis, A. dimonikensis, A. korupi, and A. maesii by having distinct crenelations on the epidermal fold (vs. crenelations absent or very weak). It further differs from A. grammatophorus, A. kakrimensis, A. platychir, and A. rheophilus by having the lobes formed by epidermal fold crenelations rounded, Fig. 1 A (vs. lobes formed by epidermal fold crenelations elongated and pointed, Fig. 1 B) and from A. brevis, A. caudosignatus, A. dimonikensis, A. korupi, A. lamani, A. maesii, A. mamonekenensis, A. nigricaudatus, and A. pulcher by having fewer branchiostegal rays (usually 6–8, rarely 5 or 9 vs. 9–10 in A. pulcher, more than 9 in the other species).Published as part of Thomson, Alfred W., Page, Lawrence M. & Hilber, Samantha A., 2015, Revision of the Amphilius jacksonii complex (Siluriformes: Amphiliidae), with the descriptions of five new species, pp. 61-87 in Zootaxa 3986 (1) on page 62, DOI: 10.11646/zootaxa.3986.1.3, http://zenodo.org/record/28909
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
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
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