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Archemezira nuoxichenae gen. et sp. nov. from Burmese amber (Heteroptera, Aradidae)
No full textHEISS, ERNST, CHEN, HUA-RONG (2023): Archemezira nuoxichenae gen. et sp. nov. from Burmese amber (Heteroptera, Aradidae). Palaeoentomology 6 (1): 17-21, DOI: 10.11646/palaeoentomology.6.1.5, URL: http://dx.doi.org/10.11646/palaeoentomology.6.1.
FIGURE 3 in Archemezira nuoxichenae gen. et sp. nov. from Burmese amber (Heteroptera, Aradidae)
No full textFIGURE 3. Archemezira nuoxichenae gen. et sp. nov. A, B, Holotype. A, Abdomen dorsal view. B, Abdomen ventral view, C, D, Damaged macropterous specimen. C, Dorsal view. D, ventral view, Scale bars = 2mm.Published as part of HEISS, ERNST & CHEN, HUA-RONG, 2023, Archemezira nuoxichenae gen. et sp. nov. from Burmese amber (Heteroptera, Aradidae), pp. 17-21 in Palaeoentomology 6 (1) on page 20, DOI: 10.11646/palaeoentomology.6.1.5, http://zenodo.org/record/775491
Archemezira nuoxichenae HEISS & CHEN 2023, sp. nov.
No full textArchemezira nuoxichenae sp. nov. (Figs 1–3) Holotype. Male specimen, SC 2357 embedded in a honeycolored piece of Burmese amber (41 × 20 × 7 mm). Upper surface of thorax and abdomen excavated by scavengers, only their ventral parts are preserved. Ventral side partly obscured by mould, right legs cut at trochanters, left legs nearly preserved but obscured. This specimen is designated as holotype and labelled accordingly, deposited at SYJAE, Fuzhou, China. Additional specimen. A macropterous specimen preserved in Burmese amber, SC 2124 was available for comparison. It is poorly visible and structural details are obscured by mould and detritus; it lacks antennae and apical segments of abdomen; thus, sex cannot be determined. Size, general habitus, recognizable structures of pronotum and head and particularly the characteristic dentate margins of connexival segments of right side support the assumption that this specimen belongs to A. nuoxichenae sp. nov. but is not recognized as paratype. It is deposited at SYJAE, Fuzhou, China. Etymology. It is a pleasure to dedicate this conspicuous Burmese amber insect to the daughter of the second author Grace Nuoxi Chen. Description. (Holotype). Male specimen of unknown alary condition and unusual large size (15.4 mm); coloration of ventral side reddish brown, pygophore darker. Except for the head, description is based on ventrally exposed characters. Head. 1.7 times longer than wide (32.5 / 19); clypeus narrow, subparallel, apex and keel-like inflated dorsal side beset with tubercles; antenniferous lobes elongate and slightly diverging anteriorly, apex dentate; antennae long and slender, 2.84 times as long as width of head (54 / 19), segment I shortest and spindle-shaped, II–IV thinner and longer, length of antennal segments I/II/III/IV = 5 / 23 / 20 / 6; eyes subglobular inserted in head, postocular lobes subparallel, narrower than width of head (15 / 19); vertex depressed between eyes. Sternum. Prosternum bout twice as wide as long (44 / 22), lateral margins subparallel at humeri, then dentate and angularly produced laterally, anterior lobe sinuately converging, its margins serrate; no trace of metathoracic scent gland visible; rostrum arising from an open atrium, rostral groove along head carinate, then forming a shallow groove on pro-, meso-, and metasternum, rostrum reaching posterior margin of mesosternum. Abdomen. Wider than long (42 / 37) and widely rounded, lateral margins of vltg II–VII beset with 5–6 spine-like teeth increasing in size toward postero-lateral angles; sternites II+III fused at middle, III–VII separated by transverse sutures, the ventral laterotergites marked by a sinuate suture; apodemal impressions hardly traceable, pattern seemingly 2:2:1; the position of spiracles cannot be ascertained; surface striate along vltgs, smooth elsewhere; pygophore conical, paratergites VIII triangular, serrate at outer margin, shorter than pygophore. Legs. Femora cylindrical with distinct trochanters, tibiae (as far as visible) thinner and cylindrical.Published as part of HEISS, ERNST & CHEN, HUA-RONG, 2023, Archemezira nuoxichenae gen. et sp. nov. from Burmese amber (Heteroptera, Aradidae), pp. 17-21 in Palaeoentomology 6 (1) on pages 19-20, DOI: 10.11646/palaeoentomology.6.1.5, http://zenodo.org/record/775491
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
Archemezira HEISS & CHEN 2023, gen. nov.
No full textGenus <i>Archemezira</i> gen. nov. <p> <b>Type species.</b> <i>Archemezira nuoxichenae</i> <b>sp. nov.</b></p> <p> <b>Etymology.</b> Refers to its age from Greek ‘archaios’ meaning earliest, ancestral and Mezirinae, the closest related flat bug subfamily.</p> <p> <b>Diagnosis.</b> Distinguished from all Aradidae described so far from Burmese amber by a combination of characters that have not been observed together in other genera: large size; structure of head with a crest-like slender long and slender clypeus; antennae more than 2.5 times longer than width of head; no metathoracic scent glands; lateral margins of connexiva II-VII beset with spine-like teeth.</p> <p> <b>Description.</b> Based on preserved outline and body structures of ventral side, as the whole dorsal side of pronotum, abdomen and pygophore are excavated and were obviously eaten by scavengers at a time, the specimen was already attached to resin by its ventral side before being totally covered by resin. The dorsal side of head is preserved. Therefore, the original alary condition might be macropterous or not and cannot be determined or reconstructed. Body size 15.4 mm.</p> <p> <i>Head.</i> Distinctly longer than wide, narrow long clypeus produced anteriorly with a dorsal crest-like elevation; antennae long and slender, segment I shortest, apex of antenniferous lobes dentate; eyes subglobular, laterally protruding; rostrum arising from an open atrium, longer than head.</p> <p> <i>Thorax.</i> About twice as wide as long, lateral margins subparallel at humeri, then angularly produced and sinuately constricted anteriorly to collar. Scutellum not preserved, no trace of hemelytral structures discernible.</p> <p> <i>Abdomen.</i> Widely rounded, lateral margins of vltg IIVII with spine like teeth; sternites separated by transverse sutures; metathoracic scent glands and spiracles not discernible; apodemal impressions (glabrous areas of Usinger & Matsuda, 1959) hardly traceable, supposed pattern 2.2.1; pygophore conically produced posteriorly, wider than long.</p> <p> <i>Legs.</i> Unarmed, femora slender with distinct trochanters, tibiae straight and cylindrical.</p> <p> <b>Remarks.</b> The large size, general habitus and dentate lateral margins of abdomen of the new genus resemble the Oriental Mezirinae genus <i>Acantharadus</i> Banks, 1909 with its type species <i>Acantharadus quaternarius</i> (Bergroth, 1886) redescribed by Usinger & Matsuda, 1959: 282 which is however differing from <i>Archemezira nuoxichenae</i> <b>sp. nov.</b> by a combination of characters as indicated in the diagnosis and in particular by the structure of clypeus, antenniferous lobes and antennae, shape and size of anterolateral angles of pronotum and the less acute dentation of connexival margins. Bergroth’s original illustration of the is reproduced here (Fig. 1B).</p> <p> <i>Archemezira</i> <b>gen. nov.</b> shares some characters with the Archearadinae (<i>e</i>. <i>g</i>., elongate head, lateral expansions of connexiva), but it has no discernible metapleural scent glands while these are well visible in this subfamily and its type species <i>Archearadus burmensis</i> Heiss & Grimaldi, 2001. Therefore, we tentatively place the new fossil in this subfamily. However, it might represent a new subfamily, but such decision should be based on a phylogenetic analysis as a result of careful comparison and examination of characters of extant and fossil Burmese amber taxa. Such a study is presently not feasible.</p>Published as part of <i>HEISS, ERNST & CHEN, HUA-RONG, 2023, Archemezira nuoxichenae gen. et sp. nov. from Burmese amber (Heteroptera, Aradidae), pp. 17-21 in Palaeoentomology 6 (1)</i> on pages 17-18, DOI: 10.11646/palaeoentomology.6.1.5, <a href="http://zenodo.org/record/7754912">http://zenodo.org/record/7754912</a>
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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