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Bambusaecoccus Meng & Xing 2022, gen. n.
No full textGenus Bambusaecoccus Meng & Xing gen. n. Type species: Bambusaecoccus maolanensis Meng & Xing sp. n., here designated. Generic diagnosis of adult female. Body broadly oval. Anal cleft deep, about 1/4‒1/5th of total body length. Stigmatic clefts present, deep, narrow marginally, but broadening away from margin, each cleft associated with about 20 dorsal stigmatic spines, with sclerotisation around inner margin, and in a small dorsal area. Dorsal derm membranous with numerous areolations. Dorsal setae short and sparse. Preopercular pores present in 2 groups, each group present antero-lateral to anal plates. Anal plates together quadrate, slightly pyriform, each plate with anterolateral margin slightly longer than posterolateral margin. Marginal setae apparently ventral, each short and spinose. Ventral tubular ducts present in a small group lateral to genital opening. Pregenital disc pores mostly each with 5‒8 loculi, present in a small group beneath posterior end of anal plates. Antennae small, each 7 segmented. Legs greatly reduced, each with only 3 segments visible on available material. Etymology. The name Bambusaecoccus is composed of the main part of the plant subfamily Bambusoideae on which the type species was collected, plus ‘ coccus ’, from the Greek word “ kokkos ” meaning “seed” or “scale insect”. Distribution. China. Remarks. The soft scale insect tribe Paralecaniini contains genera characterized by possession of a pair of eyespots on the dorsal surface of the head, situated some distance from the margin; and stigmatic clefts noticeably sunken and well sclerotized (Williams 1969). The tribe was revised by Hodgson (1994: 48), who listed four additional characteristics: “(i) lack of dorsal tubular ducts; (ii) restriction of ventral tubular ducts, if present, to a group on either side of genital opening; (iii) lack of pocket-like sclerotizations (except in Perilecanium); and (iv) restriction of pregenital disc-pores to segments immediately anterior to genital opening (when present)”. Bambusaecoccus possesses all of the above characteristics of the Paralecaniini: the adult females lack dorsal tubular ducts, and have a pair of eyespots on the dorsal surface of the head situated some distance from the margin; ventral tubular ducts are restricted to a small group on either side of the genital opening; and pregenital disc-pores are restricted to segments immediately anterior to the genital opening. Bambusaecoccus is similar to Takahashilecanium Kondo (in Kondo et al. 2005) in sharing the following character states: (i) stigmatic clefts present; (ii) pregenital disc-pores mostly each with 5 loculi; (iii) anal plates together pyriform; (iv) spiracular disc-pores present in broad bands between margin and spiracles; (v) preopercular pores present in two groups located laterad to anal plates; and (vi) pregenital disc pores forming a small group posterior to vulvar opening on each side of the anal cleft. Bambusaecoccus can be distinguished from the latter genus by (character states of Takahashilecanium in brackets): (i) stigmatic clefts each associated with about 20 dorsal stigmatic spines (each cleft containing only 3 stigmatic spines); (ii) ventral tubular ducts present in a small group on each side of genital opening (ventral tubular ducts absent); and (iii) legs and antennae reduced (legs and antennae well developed, although small relative to body size).Published as part of Meng, Shitao & Xing, Jichun, 2022, Bambusaecoccus maolanensis, a new soft scale genus and species from China (Hemiptera: Coccomorpha: Coccidae), pp. 419-430 in Zootaxa 5168 (4) on pages 420-421, DOI: 10.11646/zootaxa.5168.4.2, http://zenodo.org/record/689971
Exact confidence interval for magnitude-squared coherence estimates
No full textThe magnitude-squared coherence function is widely used in many applications. The approximate confidence interval is only reliable for large data segments. In this letter, an iterative algorithm is provided to compute the exact confidence interval from the cumulative distribution function. In order to use the confidence interval conveniently in practice, some libraries are provided, using the iterative algorithm and cubic spline interpolation
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
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
Mckenzieana Meng & Xing, 2022, nom. n.
No full textGenus <i>Mckenzieana</i> nom. n. <p> <i>Helaspis</i> McKenzie 1963: 34 (Mandibulata: Hexapoda: Hemiptera: Diaspididae) is preoccupied by <i>Helaspis</i> Imbrie 1959: 400 (Brachiopoda: Strophomenata: Productida: Productellidae).</p> <p> <b>Type species:</b> <i>Helaspis mexicana</i> McKenzie, 1963: 34.</p> <p> <b>Remarks on nomenclatural change.</b> McKenzie (1963) established the armoured scale genus <i>Helaspis</i> with the type species <i>Helaspis mexicana</i> McKenzie 1963. The genus is a valid name in Hemiptera: Coccomorpha: Diaspididae, subfamily Aspidiotinae, tribe Aspidiotini (Normark <i>et al.</i> 2019). The genus includes only the type species, recorded from Mexico.</p> <p> Unfortunately, the name <i>Helaspis</i> McKenzie 1963 is preoccupied by <i>Helaspis</i> Imbrie 1959, a fossil marine brachiopod genus (Brachiopoda: Strophomenata: Productida: family Productellidae) based on the type species <i>Helaspis luma</i> Imbrie 1959. Thus, <i>Helaspis</i> McKenzie 1963 is a junior homonym of <i>Helaspis</i> Imbrie 1959. According to Article 60 of the International Code of Zoological Nomenclature, a new replacement name is proposed for <i>Helaspis</i> McKenzie 1963: <i>Mckenzieana</i> <b>nom. n.</b></p> <p> <b>Etymology.</b> The replacement name for the genus is derived from the name H.L. McKenzie, the author of the armoured scale insect genus <i>Helaspis</i>; gender feminine.</p>Published as part of <i>Meng, Shitao & Xing, Jichun, 2022, Replacement of names for two armoured scale genera (Hemiptera: Coccomorpha Diaspididae) due to homonymy, pp. 299-300 in Zootaxa 5116 (2)</i> on page 299, DOI: 10.11646/zootaxa.5116.2.7, <a href="http://zenodo.org/record/6367391">http://zenodo.org/record/6367391</a>
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