1,720,954 research outputs found
FIGURE 4 in Wallaceochromis gen. nov, a new chromidotilapiine cichlid genus (Pisces: Perciformes) from West Africa
No full textFIGURE 4. Consensus BI tree (50% majority rule) of chromidotilapiines, based on six genes, taken from Schwarzer et al. (2014), modified. The dataset comprises mitochondrial and nuclear sequences of six independent markers. Green numbers at nodes refer to bootstrap values (BS, 1,000 replicates) of the ML run and black numbers to Bayesian posterior probabilities (BPP). Red circles represent a 100% BS support and 1.00 BPP and black circles 1.00 BPP and lower BS values. The leaf stability index exceeded 0.93 for all specimens. For more details, see Schwarzer et al., (2014, fig.4).Published as part of Lamboj, Anton, Trummer, Franziska & Metscher, Brian D., 2016, Wallaceochromis gen. nov, a new chromidotilapiine cichlid genus (Pisces: Perciformes) from West Africa, pp. 124-130 in Zootaxa 4144 (1) on page 128, DOI: 10.11646/zootaxa.4144.1.8, http://zenodo.org/record/25831
Wallaceochromis Lamboj, Trummer & Metscher 2016, gen. nov.
No full textWallaceochromis gen. nov. Differential Diagnosis. Lachrymal with four openings of laterosensory system; small chest scales; sixteen scales around caudal peduncle; upper lateral line clearly separated from dorsal fin base; teeth in both jaws unicuspid, a few teeth situated anterolaterally in the lower jaws with a curvature of the crown directed posteriorly and not buccally; no microbranchiospines; gill rakers on the outer row of the first ceratobranchial pachydermatous, transversely aligned, with a tuberculate and concave upper surface and a protracted distal tip; sexual dimorphism well developed: Males usually one third larger than females; in males first pelvic fin ray always longest, in females second (sometimes second and third) pelvic fin ray longer than first, giving the distal tip of the fin a rounded rather than pointed appearance. Snout pointed; dorsal head profile straight and sloping; low supraoccipital crest; ethmovomerine skull region slightly elongate and sloping at a low angle; it differs from Pelvicachromis in two contiguous tubular infraorbital bones (vs. three, with gap between 2nd and 3rd); 26–27 vertebrae with a tendency to higher abdominal vertebral counts (14–15 vs. 13–14); a more narrow interorbital region in adult specimens (maximum of 21.7–25.6% HL vs. 26.8–36.7% HL); seven or eight vertical dark bars on body, visible in several behavioral situations (vs. no such bars). Included species: Wallaceochromis humilis (Boulenger, 1916); type species (fig. 2, 3A,B) Wallaceochromis rubrolabiatus (Lamboj, 2004) (fig. 3C,D) Wallaceochromis signatus (Lamboj, 2004) (fig. 3E,F) Etymology. In honor of Alfred R. Wallace, co-founder of the theory of evolution and founder of biogeography; chromis, a common ending for African cichlids. Distribution. The genus is restricted to Guinea, Sierra Leone, and western parts of Liberia, where it occurs strictly in freshwater (Lamboj, 2004a). Wallaceochromis rubrolabiatus and W. signatus are only known from the Kolente River basin in Guinea, while W. humilis is found in the whole distribution area of the genus, including the Kolente River basin.Published as part of Lamboj, Anton, Trummer, Franziska & Metscher, Brian D., 2016, Wallaceochromis gen. nov, a new chromidotilapiine cichlid genus (Pisces: Perciformes) from West Africa, pp. 124-130 in Zootaxa 4144 (1) on pages 126-127, DOI: 10.11646/zootaxa.4144.1.8, http://zenodo.org/record/25831
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
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
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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