1,721,227 research outputs found
Parastenhelia Thompson & Scott 1903
No full textKey to species of Parastenhelia Thompson & Scott, 1903 1. P4 enp-1 without inner seta, enp-3 with three spines/setae (no inner setae); P2 endopod ♂ with armature formula 0.121............................................................................. P. oligochaeta Wells & Rao, 1987. – P4 enp-1 with inner seta, enp-3 with five spines/setae (two inner setae); P2 endopod ♂ with armature formula 1.221.......2. 2. Antennule ♀ 8-segmented; P3–P4 exp-1 without inner seta; P5 exopod ♂ 2-segmented.......... P. willemvervoorti sp. nov. – Antennule ♀ 9-segmented 1; P3–P4 exp-1 with inner seta 2; P5 exopod ♂ 1- or 3-segmented..........................3. 3. P1 enp-1 about six times length of enp-2; P5 exopod ♀ with straight or slightly convex inner margin............................................................................................ P. similis Thompson & Scott, 1903. – P1 enp-1 at least seven times length of enp-2; P5 exopod ♀ with slightly concave inner margin........................4. 4. P5 exopod ♀ about three times as long as maximum width; P5 exopod ♂ 3-segmented.. P. hornelli Thompson & Scott, 1903. – P5 exopod ♀ about as 2.3 times as long as maximum width; P5 exopod ♂ 1-segmented... P. hornelli sensu Apostolov (1973).Published as part of Huys, Rony & Mu, Fanghong, 2021, Johnwellsia, a new intertidal genus of Parastenheliidae (Copepoda, Harpacticoida) from the Taiwan Strait, China, including a review of the family and key to genera, pp. 236-318 in Zootaxa 5051 (1) on pages 255-256, DOI: 10.11646/zootaxa.5051.1.13, http://zenodo.org/record/557241
Laophontella Thompson & Scott 1903
No full textGenus Laophontella Thompson & Scott, 1903 Laophontella horrida (Por 1964) (Fig. 20) Material examined. São Sebastião Is., Parcel da Praia Grande (23 º 51 ’ 30 ’’S 45 º 25 ’00”W): One female, 2 males, 2 copepodites. 14 Feb. 2007. Oliveira J. M. coll. São Sebastião, Guaecá Beach, Itaçucê (23 º 50 ’00”S 45 º 26 ’ 62 ”W): One nauplius. 0 8 Feb. 2006. Pepato, A. coll. Decription of nauplius. The dorsal shield of the nauplius (Fig. 20 A) 470 µm long, covered with furrows and striations. Two medial lateral processes are followed by two more bifid lateral processes and one posterior small pointed process and these complete the ornamentation of the dorsal shield. The furcal region of the body is prolonged into two bifid projections onto which the posterior setae are inserted. The dorsal shield is strongly furrowed and rugose externally. Labrum: wide and finelly setullous distally. Labium (part of the ventral wall, just below the labrum) bears 2 patches of setules posteriorlly. Antennule (Figs 20 A–B) long and thin, but also rugose proximally, and distinctly divided into 3 segments of which the last bears 10 setae. Antenna. Exopod with 4 setae, and segmented. Endopod with 2 lateral setae and distal claw. Coxa with a masticatory process bearing 3 thick setae: inner seta distally divided into a 3 -pointed fork with a minute inner seta, a middle seta distally denticulated, and an outer glabrous seta. Basis: a process with 3 setae. Mandible: Coxabasis externally spinulous, innerly confluent with endopod. This bears a bifid seta, 3 pointed setae, and 2 foliaceous setae. Exopod 2 -segmented with a pinnate seta on first segment and 2 long setae on second segment (one longer seta, twice the length of the other). Maxillule: maxilla and maxilliped are represented by pointed lateral body projections as in Fig. 20 B. Remarks. Laophontella horrida (Por, 1964) has a subspecies L. h. dentata Mielke, 1992 which occurs in Costa Rica. Males and female found agree in their general aspect but not in details with Mielke’s specimens. The furca and the antennules are like Por’s (1964) illustrations of the species Por (1964) figured a nauplius together with L. horrida. It agrees in general aspect with the nauplius which we found in samples collected in São Sebastião Channel waters where the adults occurred. It has the characteristic long, thin antennules of the other Tetragonicipitidae nauplii.Published as part of Björnberg, Tagea & Kihara, Terue C., 2013, On Tetragonicipitidae (Crustacea, Copepoda) from the Channel of São Sebastião, Brazil, with description of their nauplii and two new species of Phyllopodopsyllus, pp. 501-529 in Zootaxa 3718 (6) on page 527, DOI: 10.11646/zootaxa.3718.6.1, http://zenodo.org/record/22002
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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