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Neobelocera Ding & Yang 1986
No full textGenus Neobelocera Ding & Yang, 1986 Type species: Neobelocera asymmetrica Ding & Yang, 1986 (original designation). Diagnosis The genus Neobelocera is easily distinguished from other genera of Tropidocephalini by the following combination of characters: antennae with first segment subsagittate, markedly flattened, a longitudinal carina down middle, the ventral apical angle longer than dorsal apical angle (Figs 1E, 2B, 3E, 4B); when postclypeus viewed in profile, apical part of median carina bent at rounded angle, not at right angle (Figs 1D, 3D) (Hou & Chen 2010; Hu & Ding 2014). Host plant Bamboo. Distribution Oriental region (China).Published as part of LI, Hong-Xing, Yang, Lin & Chen, Xiang-Sheng, 2020, Two new species of the bamboo-feeding planthopper genus Neobelocera Ding & Yang, 1986 from China (Hemiptera, Fulgoroidea, Delphacidae), pp. 1-14 in European Journal of Taxonomy 641 on page 3, DOI: 10.5852/ejt.2020.641, http://zenodo.org/record/381711
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
Neobelocera Ding & Yang 1986
No full textNeobelocera Ding & Yang, 1986 Neobelocera Ding and Yang, in Ding et al. 1986: 420; Chen and Liang, 2005: 374; Ding, 2006: 196. Type species. Neobelocera asymmetrica Ding & Yang, in Ding et al. 1986: 420, by original designation. Description. The distinctive characters used by Ding and Yang (Ding et al. 1986), Chen and Liang (2005) and Ding (2006) are modified as follows: Body Size. Macropterous form, small size, body length (including forewing): male 2.8–5.1 mm, female 3.2–5.7 mm. Coloration. General color dark yellowish brown. Vertex, frons, clypeus, genae, pro- and mesonotum with carinae pale yellowish brown, bordered with dark brown (Figs 1, 2, 9, 17; Ding et al. 1986: Fig. 6: 1; Zhu 1988: Fig. 1; Qin & Yuan 1998: Fig. 1: A). The first segment of antennae with two oblique bands brown to dark brown (Figs 3, 10, 18; Ding et al. 1986: Fig. 6: 2; Zhu 1988: Fig. 2; Qin & Yuan 1998: Fig. 1: B). Forewings hyaline, speckled with brown markings, veins dark brown, with several short white stripe at intervals from middle to apex (Figs 1, 11, 19; Ding & Yang 1986: Fig. 6: 6; Zhu 1988: Fig. 4). Hindwings hyaline with veins dark brown. Head and Thorax. Head, including eyes (Figs 2, 9, 17; Ding et al. 1986: Fig. 6: 1; Zhu 1988: Fig. 1; Qin & Yuan 1998: Fig. 1: A), wider than pronotum (1.09–1.15: 1). Vertex wider at base than long submedially about 1.9 –3.0: 1, apical margin transversely broadened and only slightly produced medially. Y-shaped carina distinct, submedian carinae uniting at apex, apical margin evenly rounding onto frons. Frons (Figs 3, 10, 18; Ding et al. 1986: Fig. 6: 2; Zhu 1988: Fig. 2; Qin & Yuan 1998: Fig. 1: B) in median line longer than wide at widest part about 1.2–1.8: 1, widest above level of lower margin of eyes, lateral carinae roundly angulate above level of ocelli, then converging apically, median carina forked at extreme base. Eyes strongly emarginate on lower margin. Post-clypeus wider at base than frons at apex, in profile, apical part of median carina bend at rounded, not angled. Rostrum very short, only reaching mesotrochanters. Antennae reaching the level of median part of post-clypeus, with first segment subsagittate, markedly flattened, a longitudinal carina down middle, with the apex unequally bifurcate, the inner apical angle much longer than outer apical angle, in middle line shorter than second segment about 0.48–0.71: 1, second segment cylindrical or long oval, longer than wide about 2.5–3.5: 1 (Figs 3, 10, 18; Ding et al. 1986: Fig. 6: 2; Zhu 1988: Fig. 2; Qin & Yuan 1998: Fig. 1: B). Pronotum (Figs 1, 12, 23, 31) equal to vertex medially (0.9–1.06: 1), posterior margin concave medially, with lateral carinae extending from near the posterolateral angle of the vertex to the posterior margin of the pronotum, running as anterolateral margin, curving inward and reaching hind margin, lateral discs concave. Mesonotum longer in middle line than vertex and pronotum combined (1.7–2.5: 1), median carina reaching the end of scutellum. Forewings relatively broad, longer in middle line than wide at widest part about 2.64–2.83: 1, widest at about apical 1 / 3, broadly acute at apex with a series of nearly connected transverse cross veins present at the posterior 1 / 3. Spinal formula of hind leg 5–6 – 4, post-tibial spur with an apical tooth. Basal segment of digitus longer than second and third combined (1.6 –2.0: 1). Male Genitalia. Anal segment of male (Figs 4 –7, 12, 13, 20, 21, 24) small, ring-like, ventral margin without processes or with a stout, very short process. Pygofer in lateral view (Figs 5, 13, 22) with ventral margin longer than dorsal margin, posterior margin convex, straight or slightly sinuate, in caudal view (Figs 4, 12, 23, 24) with opening longer than wide, ventral margin concave or with medioventral process. Genital styles subparallel, slender, long (Figs 4, 8, 12, 15, 16, 24, 27, 28). Phallobase (Figs 7, 14, 25, 26) with a projection or absent. Aedeagus tubular, long, protruding processes of various lengths from apex. Suspensorium not recognizable. Diaphragm membranous, separated. Female Genitalia. First valvifers present and moderately large, second valvifers long, broad and large. Ovipositor not surpassing the pygofer. Gonangulum (Fig 29; Zhu, 1988: Fig. 5) distinct, with apex blunt or rounded. Host Plant. Bamboo, such as Indocalamus latifolius (Keng) McClure (Ding & Hu 1991), Indocalamus sp. (Chen & Liang 2005), and Neosinocalamus sp. (this paper). Distribution. Oriental region (southern China). Discussion. Of the genera of the tribe Tropidocephalini, only three genera, Bambucibatus Muir, 1915 (monotypic, Singapore), Belocera Muir, 1913 (five species, south China) and Neobelocera (six species, south China), have the antennae flattened, sagittate or subsagittate. The genus Neobelocera is closely related to Belocera (Ding et al. 1986; Chen & Liang 2005; Chen et al. 2007), which also feeds on bamboo, but differs in the following: first segment of antennae with the apex unequally bifurcate, ventral apical angle much longer than dorsal apical angle (in Belocera, apex of first segment of antennae equally bifurcate, ventral apical angle subequal to dorsal apical angle); postclypeus in profile, apical part of median carina bend at rounded, not angled (in Belocera, postclypeus in profile, apical part of median carina and lateral carinae bend at angled); rostrum very short, only reaching mesotrochanters (rostrum surpassing mesotrochanters in Belocera); forewing relatively broad, longer in middle line than wide at widest part less than 3.0 times (more than 3.0 times in Belocera); and the surface of forewing often with blackish brown markings, in dark portion veins bear white or yellowish white spots (in Belocera, forewing often with a fuscous central longitudinal fascia, costal area light yellowish white). The genus Neobelocera is also closely related to Bambucibatus and can be distinguished by: first segment of antennae shorter than second (two segments of antennae with the same length in Bambucibatus); head including eyes wider than pronotum (in Bambucibatus, head including eyes narrower than pronotum); vertex with median carina distinct (very faint in Bambucibatus); frons with median carina forked at extremely base (not forked in Bambucibatus). The following characters are considered synapomorphies of the genus Neobelocera: antennae with first segment subsagittate, the ventral apical angle much longer than dorsal apical angle (Figs 3, 10, 18); when postclypeus viewed in profile, apical part of median carina bent at rounded angle, not at right angle; rostrum very short, only reaching mesotrochanters. The plesiomorphic character states based on outgroup comparison with the genus Belocera and Bambucibatus is antennae with first segment flattened, sagittate or subsagittate.Published as part of Hou, Xiao-Hui & Chen, Xiang-Sheng, 2010, Review of the Oriental bamboo delphacid genus Neobelocera Ding & Ya n g (Hemiptera: Fulgoromorpha: Delphacidae) with the description of one new species, pp. 39-50 in Zootaxa 2387 on pages 40-42, DOI: 10.5281/zenodo.27583
XUANKUN LI, ZHU LI & DING YANG (2013) Two new species of Amblypsilopus Bigot with a key to
No full textLi, Xuankun, Li, Zhu, Yang, Ding (2013): XUANKUN LI, ZHU LI & DING YANG (2013) Two new species of Amblypsilopus Bigot with a key to. Zootaxa 3637 (5): 600-600, DOI: http://dx.doi.org/10.11646/zootaxa.3637.5.
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
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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