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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
Heisonyx vitticollis Marshall, E. Colonnelli 1947
No full textHeisonyx vitticollis Marshall, 1947 (Figs. 1–3, 10, 16–19) Type material. LECTOTYPE: J (BMNH) (Fig. 1, 3): ‘ SYNTYPE [circular label with bluish margin, printed] // S. AFRICA Grahamstown 26.III.1947 Miss M. Farquhar From soil on golf course [handwriting] // Heisonyx vitticollis, Mshl. COTYPE [Marshall’s handwriting] // G. A. K. Marshall Coll. B. M. 1950-255 [printed] // LECTOTYPUS ♂ Heisonyx vitticollis Marshall, E. Colonnelli des., 2008 [red, handwriting]’. PARALECTOTYPES: 2♀♀ (BMNH), the same data as lectotype; 1J 1♀, ‘Cotype [circular label with yellow margin, printed] // Grahamstown C. P. Golf Course grass 3/4/ 47 M. F. [Marshall’s handwriting] // Curculionid 24.3.47 G. C. [7.4.47 in second specimen, Marshall’s handwriting] // Heisonyx vitticollis, Mshl. COTYPE [Marshall’s handwriting] // Pres. by Imp. Inst. Ent. B. M. 1947-357 [printed]. The appropriate labels: “ PARALECTOTYPUS ♂ (or ♀) Heisonyx vitticollis Marshall, E. Colonnelli des., 2008 [red, handwriting]’ were added. We have examined five syntypes from Marshall’s collection (BMNH).The lectotype is designated here.All these specimens are freshly emerged and one paralectotype is teneral with one elytron missing. Redescription. Body length: 2.0– 2.1 mm (lectotype 2.0 mm). Black, femora, tibiae and antennae dark brownish. Whole body covered by dense greyish scales, pronotum with four longitudinal dark brownish stripes, elytra with irregular brownish spots, one female with two indistinct, V-shaped bands in the middle and posterior third of elytra (Fig. 1). Recumbent elytral scales rounded, very dense, partly overlapping, finely longitudinally striate, leaving only punctures of striae visible. Semierect elytral scales wide, clavate, slightly longer than half of elytral interval and twice as wide as the diameter of one recumbent scale, densely arranged in one row on each interval. Pronotum, head and rostrum thickly covered by the same kind of recumbent scales as those on elytra and intermingled with shorter semierect setae, head with dense row of semierect setae above each eye. Legs and antennae except club entirely covered by dense and round recumbent scales and short, scale-shaped semierect setae. Rostrum 1.29–1.31 times as wide as long, very feebly tapered anteriad. Epifrons also feebly tapered anteriad, at base only slightly narrower than the distance between anterior edges of eyes, feebly longitudinally depressed along midline, with narrow longitudinal stria along the whole length and with very fine, sometimes barely visible V-shaped transversal stria at base. Rostrum convex, in lateral view separated from rest of head by indistinct and narrow transversal groove. Antennal scrobes in dorsal view clearly visible on anterior half of rostrum, in lateral view furrow-shaped, with distinct borders, feebly enlarged posteriad, dorsal margin subparallel with dorsal border of epifrons, ventral margin directed toward middle of eye. Eyes large, moderately convex. Antennae robust, scape distinctly curved at midlength, gradually thickened toward apex. Funicle 7-segmented, first funicular antennomere conical, robust, 1.4 times as long as wide, twice as long as the isodiametric second funicular antennomere, all funicular antennomeres closely adpressed, funicular antennomeres 3–7 gradually widening toward club, funicular antennomere 3 and 4 1.4 times as wide as long, funicular antennomere 5 1.5 times as wide as long, funicular antennomere 6 1.6 times as wide as long, funicular antennomere 7 1.7–1.8 times as wide as long, club as wide as scape at apex. Pronotum 1.39–1.46 times as wide as long, widest in posterior third, in anterior half strongly narrowing toward anterior margin, constricted immediately behind it. Disc in lateral view only very feebly convex. Elytra oval, 1.21–1.23 times as long a wide, widest at middle. Intervals almost flat, striae very narrow, appearing as rows of fine punctures. Tibiae short and robust, apex of protibia with inner margin enlarged and lateral margin rounded, apex with five short blackish spines and two hook-shaped brownish spines at inner angle and short fringe of fine and very dense black bristles on inner edge near apex (Fig. 16). Tarsi short. Tarsomere 2 1.3–1.4 times as wide as long; tarsomere 3 1.4 times as wide as long and 1.2–1.3 times as long as tarsomere 2. Ungular tarsomere 1.2 times as long as tarsomere 3, claw black. Male genitalia. Aedeagus in basal half parallel-sided, apical half triangular with straight, regularly tapering sides (Fig. 10). Female genitalia. Spermatheca C-shaped with regularly curved cornu, large corpus, short and wide nodulus and very short, wide ramus (Fig. 18). Ovipositor with wide, long-oval hemisternite, apex dull with very short stylus with apical setae (Fig. 17). Differential diagnosis. Heisonyx vitticollis can be confused only with H. jelineki sp. nov. and H. giustocaroli sp. nov., both with 7-segmented antennal funicle. The distinguishing characters are given in the differential diagnoses of the latter two species and in the key. Bionomics. MARSHALL (1947) stated in the original description: ‘The weevils were all found in soil samples taken in the upper four inches of soil on the fairway of a golf course, after the surface vegetation had been scraped away.’ Distribution. South Africa: Eastern Cape.Published as part of Borovec, Roman, Colonnelli, Enzo & Osella, Giuseppe, 2009, On the South African genus Heisonyx (Coleoptera: Curculionidae: Entiminae), pp. 841-860 in Acta Entomologica Musei Nationalis Pragae 49 (2) on pages 844-845, DOI: 10.5281/zenodo.532499
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
Molecular re-examination of the taxonomy of Ochthebius (Coleoptera:Hydraenidae) from the Mediterranean and Macaronesian regions.
No full textGenetic and behavioral differences among purported species of Trichosirocalus (Coleoptera: Curculionidae) for biological control of thistles (Asteraceae, Cardueae).
No full textkoamabayili/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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