1,725,770 research outputs found
Acer sinopurpurascens W. C. Cheng
No full textAcer sinopurpurascens W.C.Cheng in Chien & Cheng (1931: 62). Type:— CHINA. Zhejiang [Chekiang]: Western Tian Mu Shan [Tienmu-shan], elev. 1200–1300 m, 23 April 1931, W. C. Cheng 2424 (PE00023445, lectotype designated by Lin et al. 2009; isolectotypes A00245405, CQNM0015724, IBSC0002074, K000640863, NAS00071819, PE00023443, PE00023446, PE00023448). Remaining syntypes: CHINA. Zhejiang: Western Tianmushan, elev. ca. 845, 16 August 1929, S. S. Chien 845 (A00050488, CQNM0015723, NAS00071817, NAS00071818, NY00337718, PE00023444, K000640862); elev. 1200–1300 m, 23 April 1931, W. C. Cheng 2429 (A00245404, IBSC0002073, K000640864, LBG00076624, PE00023447). Note: —In the protologue, Chien & Cheng (1931) designated three gatherings as types of flowering, staminate and pistillate, respectively. Lin et al. (2009) chose a duplicate of staminate at PE (00023445) as the lectotype. The isolectotypes and remaining syntypes are listed above.Published as part of Chen, Feng & He, Hai, 2022, The historical relics in Chongqing Natural History Museum: An annotated checklist of original materials for 37 names of Chinese seed plants, pp. 38-52 in Phytotaxa 530 (1) on page 46, DOI: 10.11646/phytotaxa.530.1.3, http://zenodo.org/record/582393
[Portrait of Thomas C. Cheng and Thomas W. Tinsley]
No full textThomas C. Cheng (left) and Thomas W. Tinsley (right) standing together.All images created by or supplied to the Society of Invertebrate Pathology for use in publications and promotion. Content in Description field provided by text on verso or accompanying documentation
[Portrait of Thomas C. Cheng and Thomas W. Tinsley]
No full textThomas C. Cheng (left) and Thomas W. Tinsley (right) standing together.All images created by or supplied to the Society of Invertebrate Pathology for use in publications and promotion. Content in Description field provided by text on verso or accompanying documentation
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
Fagus chienii W. C. Cheng 1935
No full text<p> <i>Fagus chienii</i> W.C.Cheng (1935: 70).</p> <p> Type:— CHINA. Sichuan [Szechuan]: W. Pingwu Xian [Pingwu hsien], elev. ca. 1300 m, 17 August 1931, <i>W. C. Cheng 2903</i> (lectotype designated here, NAS00070338; isolectotypes A00033870, CQNM0017387, E00098603, IBSC0001170, K000832761, MICH1109337, NAS00070339, NY00248568, PE00022177, PE00022178, PE00022179, PE00022180, PE00022181, PE00022182, PE00022180, SYS00054972, US 00409518).</p> <p> <b>Note</b>:—In the protologue, Cheng indicated <i>W.C. Cheng 2903</i> as the type, but he did not specify the herbarium where the type is deposited. In searching in various herbaria, 18 duplicates were traced and all of them are syntypes since no holotype was designated under Art. 9.6 (Turland <i>et al</i>. 2018). Most duplicates bear cupules and the identification annotation of W. C. Cheng and are well preserved. NAS00070338 is designated here as the lectotype for the reason Cheng used to work in NAS. In the protologue, Cheng (1935) stated the locality of the type at a place near “Yao-erpa” in West of Pingwu Xian; however, none of the duplicates with a label bearing this locality, and it is also uncertain whether “Pingwuhsien” means the present Pingwu Town. For efforts to trace this type locality has not been successful, the identity of this tree species is still uncertain (e.g. Huang <i>et al</i>. 1999).</p>Published as part of <i>Chen, Feng & He, Hai, 2022, The historical relics in Chongqing Natural History Museum: An annotated checklist of original materials for 37 names of Chinese seed plants, pp. 38-52 in Phytotaxa 530 (1)</i> on page 40, DOI: 10.11646/phytotaxa.530.1.3, <a href="http://zenodo.org/record/5823939">http://zenodo.org/record/5823939</a>
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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