1,721,567 research outputs found
Tricentrus cassiae Yuan & Xu in Yuan, Fan, Cui & Xu 1997
No full textTricentrus cassiae Yuan & Xu in Yuan, Fan, Cui & Xu, 1997:99 (correct original spelling) also spelled as Tricentrus cassae Yuan, Fan, Cui & Xu, 1997:103 and Tricentrus caesalpiniae Yuan, Fan, Cui & Xu, 1997:91 (incorrect original spellings) Note: Acting as First Reviser, Yuan & Chou, 2002:539 implicitly fixed the correct original spelling by adopting only it as valid (ICZN article 24.2.4).Published as part of Dmitriev, Dmitry A. & Deitz, Lewis L., 2017, Nomenclatural changes in the family Membracidae (Hemiptera, Auchenorrhyncha, Membracoidea) in Zootaxa 4365 (1), DOI: 10.11646/zootaxa.4365.1.7, http://zenodo.org/record/112531
Tricentrus dorsocameloideus Yuan & Xu in Yuan, Fan, Cui & Xu 1997
No full textTricentrus dorsocameloideus Yuan & Xu in Yuan, Fan, Cui & Xu, 1997:95 (correct original spelling) also spelled as Tricentrus dorsoacameloideus Yuan, Fan, Cui & Xu, 1997:102 and Tricentrus dorsocaineloideus Yuan, Fan, Cui & Xu, 1997:96 (incorrect original spellings) Note: Acting as First Reviser, Yuan & Chou, 2002:372 implicitly fixed the correct original spelling by adopting only it as valid (ICZN article 24.2.4).Published as part of Dmitriev, Dmitry A. & Deitz, Lewis L., 2017, Nomenclatural changes in the family Membracidae (Hemiptera, Auchenorrhyncha, Membracoidea) in Zootaxa 4365 (1), DOI: 10.11646/zootaxa.4365.1.7, http://zenodo.org/record/112531
Tricentrus camelloleifer Yuan & Xu in Yuan, Fan, Cui & Xu 1997
No full textTricentrus camelloleifer Yuan & Xu in Yuan, Fan, Cui & Xu, 1997:97 (correct original spelling) also spelled as Tricentrus camellolefer Yuan, Fan, Cui & Xu, 1997:91 (incorrect original spelling). Note: Acting as First Reviser, Yuan & Chou, 2002:391 implicitly fixed the correct original spelling by adopting only it as valid (ICZN article 24.2.4).Published as part of Dmitriev, Dmitry A. & Deitz, Lewis L., 2017, Nomenclatural changes in the family Membracidae (Hemiptera, Auchenorrhyncha, Membracoidea) in Zootaxa 4365 (1), DOI: 10.11646/zootaxa.4365.1.7, http://zenodo.org/record/112531
Tricentrus oedothorectoidis Yuan & Fan 2002
No full textTricentrus oedothorectoidis Yuan & Fan, 2002 Tricentrus oedothorectoidis Yuan & Fan, 2002: 416. Description. Body length (including forewing): male 6.4mm (N=1); female 7.5mm (N=1); forewing length: male 5.3mm (N=1); female 6.4mm (N=1); width between suprahumeral horn apices: male 3.9mm (N=1); female 5.1mm (N=1); width between humeral angle apices: male 3.1mm (N=1); female 3.6mm (N=1). Coloration. Black, eyes dark brown with black spots and orange border, ocelli pale yellow. Distal quarter of forewing dark brown, veins R, M black (in female yellow-brown), Cu, A yellow-brown. With the following parts yellow pubescent except surface of abdomen and coxae silvery: head, pronotum, part of thorax, basal fifth of forewing. Head and thorax. Head nearly rectangular in anterior view, longer than width at base by 2:1; ocelli slightly closer to inner margins of eyes than to each other; frontoclypeal margins broadly expanding, frontoclypeal lobes distinct and almost touching or slightly surpassing ventral margins of vertex (Figs 6C, 6F). Pronotum with heavy punctures; suprahumeral horns short and stocky, horizontally extended laterally and slightly distally recurved; posterior pronotal process ending at base of forewing cell M 3+4 (last apical cell), with four carinae, median carina extended full-length, lateral carinae extended from dorsad of scutellum apical third to apex of posterior pronotal process, ventral carina extended from middle to apex (Figs 6 A–6B, 6D–6E). Basal fifth of forewing with opaque sclerotization with punctures, veins M and Cu fused in basal fourth and strongly divergent, veins M+Cu and A fused basally (Fig. 6H). Metathoracic tibia with three longitudinal rows of cucullate setae and trochanter with robust processes (Fig. 6G). Male genitalia. Pygofer in lateral view convex on dorsal margin basally (Fig. 7A), nearly annular in posterior view (Fig. 7C). Sternite IX wider than long (Fig. 7D). Lateral plate with slight median depression and fingerlike dorsal lobe at base, apex blunt (Fig. 7B). Basal two-thirds of subgenital plate fused (Fig. 7D). Style clasp oriented laterally, angled dorsally, distally recurved, surface with setae, connective N-shaped (Fig. 7F). Aedeagus in lateral view hook-shaped, narrow in anterior view, more than half of the surface and margin with coarse denticuli (Figs 7E, 7G). Female genitalia. Sternite VII in ventral view with posterior margin concave, surface with setae (Fig. 8B). Pygofer in lateral view somewhat depressed, much lonter than wide, with setae; in ventral view oblong, apex slightly constricted (Figs 8 A–8B). First valvulae long, moderately broad and slightly curved, apex acute (Fig. 8C). Second valvulae knife-shaped, slightly broadened distally, apical third irregularly serrate dorsally (Figs 8D, 8F). Third valvulae (gonoplac) with distal half expanded, ventral margin with setae (Fig. 8E). Specimens examined. 1³, China: Yunnan, Baoshan County, 15 August 2018, Nian Gong; 1♀, China: Guizhou, Anshun City, Ziyun County, 7 June 2019, Yong-qin Fang. Distribution. China (Yunnan, Guizhou). Remarks. This species may be distinguished by the black overall coloration; the pronotum shiny and somewhat iridescent with the short, stocky suprahumeral horns horizontally extended laterally and slightly upward, with apices slightly upturned; and the distal quarter of the forewing dark brown.Published as part of Li, Feng-E, Yang, Lin, Long, Jian-Kun, Chang, Zhi-Min & Chen, Xiang-Sheng, 2020, First Description of Adult Males of Four Species of the Treehopper genus Tricentrus Stål from China (Hemiptera, Membracidae, Centrotinae, Tricentrini), pp. 247-260 in Zootaxa 4894 (2) on pages 253-258, DOI: 10.11646/zootaxa.4894.2.4, http://zenodo.org/record/431571
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
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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