1,723,256 research outputs found
Platysodes formosanus H. Kobayashi 1990
No full text<i>Platysodes formosanus</i> Kobayashi, 1990 <p>(Figs. 9–12, 25, 28)</p> <p> <b>New material examined (</b> 1♁, 2♀♀ <b>).</b> <b>CHINA: Guangdong:</b> 1♀ (MYNU), 2011.V.18, Longyangdong Park, Guang-zhou, Ling-Ting Chen leg. <b>Taiwan:</b> 1♀ (CKSJ), Fushan, Taipei Hsien, 2000.VII.11, H. Sugaya leg. // <i>Platysodes formosanus</i> H. Kobayashi, 1990, det. K. Sakai, 2013; 1♁ (CKSJ), 2008.XI.7, Shihtyutou, Nantou, C. C. Lo leg. // <i>Platysodes formosanus</i> H. Kobayashi, 1989, det. K. Sakai, 2013.</p> <p> <b>Distribution.</b> China: Guangdong (<b>new record</b>), Taiwan.</p> <p> <b>Remarks.</b> <i>Platysodes formosanus</i> is extremely similar to <i>P. jansoni</i> and the parameres of both also show no differences (Figs. 12, 17), and that resulted in Qiu <i>et al.</i> (2015) presumed them as the same species. Traditionally, the former is characterized by elytron bearing one tomentose macula and restricted to Taiwan Island (Kobayashi 1990; Qiu <i>et al.</i> 2015), while the latter is totally black and distributed in eastern India and Indochina (Arrow 1910; Qiu <i>et al.</i> 2015). However, we recently obtained a female whose appearance perfectly matches the characteristics of <i>P. formosanus</i> (Fig. 9), but it originated from Guangzhou (Guangdong, China) where located on the southeastern edge of the Asian continent and between the Indochinese Peninsula and Taiwan Island (Fig. 28). Furthermore, an individual of <i>P. formosanus</i> bearing an indistinct macula on elytron (nearly disappeared) was found from Taiwan (Fig. 25), and a female of <i>P. jansoni</i> with two maculae was discovered from Vietnam (Fig. 13). The two specimens have here verified the prediction proposed by Qiu <i>et al.</i> (2015) that the variability of tomentose maculae on elytron can be observed in a species of wide distribution. Therefore, neither endemism of <i>P. formosanus</i> nor morphological differences between the two species are well established, but we would like to formally propose the synonymy when sufficient material got rather than synonymize them at present.</p>Published as part of <i>Qiu, Jian-Yue & Xu, Hao, 2020, Further notes on the flower chafer genus Platysodes Westwood, 1873 (Coleoptera Scarabaeidae: Cetoniinae) with description of a new species from Himalaya, pp. 192-200 in Zootaxa 4890 (2)</i> on page 195, DOI: 10.11646/zootaxa.4890.2.2, <a href="http://zenodo.org/record/4301815">http://zenodo.org/record/4301815</a>
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
Comparative Study of Flame Spread Behaviors in One Dimensional Droplet Array Under Supercritical Pressures of Normal Gravity and Microgravity
No full textExperiments on flame spread in an one-dimensional droplet array up to supercritical pressures of fuel droplet have been conducted in normal gravity and microgravity. Evaporating process around unburnt droplet is observed through high-speed Schlieren and direct visualizations in detail, and flame spread rate is measured using high speed chemiluminescence images of OH radical. Flame spread behaviors are categorized into three: flame spread is continuous at low pressures and is regularly intermittent up to the critical pressure of fuel. Flame spread is irregularly intermittent and zig-zag at supercritical pressures of fuel. At atmospheric pressure, the limit droplet spacing and the droplet spacing of maximum flame spread rate in microgravity are larger than those in normal gravity. In microgravity, the flame spread rate with the increase of ambient pressure decreases initially, takes a minimum, and then decreases after taking maximum. This is so because the flame spread time is determined by competing effects between the increased transfer time of thermal boundary layer due to reduced flame diameter and the reduced ignition delay time in terms of the increase of ambient pressure. Consequently, it is found that flame spread behaviors in microgravity are considerably different from those in normal gravity due to the absence of natural convection
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
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