1,720,956 research outputs found
western Venezuela
No full textHornburg, Michael, Gottwald, Stephan (2012): western Venezuela. Zootaxa 3239: 64-68, DOI: 10.5281/zenodo.28045
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
Ditriaena (Ditriaena) romeroi Hornburg & Gottwald, 2012, sp. nov.
No full textDitriaena (Ditriaena) romeroi sp. nov. Type specimens. Holotype (3): Venezuela, Edo. Falcón, 3.5 km NW Maicillal, Cerro Togogo, 64 m, 11 ° 13 ’39,8’’N, 68 ° 53 ’ 10.2 ’’W, 2.VII. 2008, leg. M. Hornburg. Paratypes: 1 3, 1 Ƥ: same data as holotype; 6 ƤƤ: Venezuela, Edo. Falcón, 3.5 km NW Maicillal, Cerro Togogo, 64 m, 11 ° 13 ’39,8’’N, 68 ° 53 ’10,2’’W, 5.VII. 2008, leg. M. Hornburg; 2 3, 3 ƤƤ, same data, except: leg. S. Gottwald; 2 ƤƤ: Venezuela, Edo. Falcón, 3.5 km NW Maicillal, Cerro Togogo, 64 m, 11 ° 13 ’39,8’’N, 68 ° 53 ’10,2’’W, 14.VII. 2008, leg. M. Hornburg; 1 3, 1 Ƥ: same data, except: leg. S. Gottwald; 1 ex.: Catica [1 km NE of Bahía de Cata, Estado Aragua], 0 m, V. 1980, CFR [coll. Francisco Romero]. The holotype and one female paratype will be deposited in ZMHB, additional paratypes in CLBC, FRCM, MIZA, MHCB, NMPC and SGCB. General diagnosis. Length: 12.0– 18.3 mm, width: 4.2–6.3 mm; colour black, dorsal surface with slight red-greenish reflections; body robust, flattened; elytra striate-punctate, trispinose apically. Description of holotype. Measurements: total length: 12.4 mm, width: 4.2 mm. Head black, with indistinct white pilosity; surface smooth; punctation widely spaced, more dense and pronounced between antennal insertions and with longer white pilosity; frons tapered towards vertex. Antennae black, 11 -jointed, with sparse pilosity; antennomere 1 elongate clavate, antennomere 2 subequal; antennomere 3 twice as long as 2, slightly broadened; antennae serrate from antennomere 4; antennomeres 4 to 11 with sensory fovea on inner surface. Pronotum black; disc smooth with irregular punctation, laterally more densely developed; disc with shallow longitudinal furrow; lateral margins arcuately converged towards anterior part, only slightly emarginated prebasally, accentuating the posterior angles. Scutellum bulged, equilateral; glabrous. Elytra black with red-greenish reflections; glabrous, except apical third, which has indistinct, widespread white setae; general shape broadened from base to humeri, parallel to apical third, then arcuately converged to apices; distinctly striated; intervals on disc principally lacking any apparent microsculpture, but basal half and sides with more or less irregular transverse confluent punctation; ridges smooth, only laterally with scattered punctation; apices of each elytron tridentate, two teeth of same length at tip, the third one separated anteriorly by twice the distance of the other two. Ventral side black, with sparse, long, white pubescence; prosternum and metasternum smooth and irregularly punctured; surface of abdominal ventrites finely microsculptured, with irregularly arranged elongate punctation; anal ventrite more densely punctate, apically truncate and furrowed, shortly denticulated on each side. Legs black with reddish reflections, very finely chagreened; white pilosity sparse and short; femora fusiform; tibiae slender, nearly straight. Aedeagus slender, smooth, furnished with well discernible pores; apices of parameres with sensory setae laterally (Fig. 3). Sexual dimorphism. Elytra of males parallel, converging arcuately from the apical third to the apices. Elytra of females slightly broadened versus the apical third, then converging regularly to the apices. Metatarsus of males, mainly the first tarsomere, visibly longer than in females. Ovipositor of complex structure, exhibiting two pairs of stacked lobes, laterally with additional long sclerotic appendages. Females generally taller. Etymology. The species is named in reference to Francisco Romero Rodríguez (1920–2002), patriarch of the well known entomologically active family from Maracay, Venezuela, who collected the very first specimen of the new species. Distribution. Northwestern Venezuela (Aragua, Falcón). Differential diagnosis. Ditriaena romeroi is closely related to D. purpurascens (Waterhouse, 1882), described from Honduras and keys to this species in the generic revision (Cobos 1975). The shape of the male genitalia of D. romeroi does not differ significantly from that of D. purpurascens. The female ovipositor resembles that of the Mexican D. sexspinosa (Waterhouse, 1889), figured in Cobos (1975). Other morphological aspects clearly distinguishing D. romeroi from D. purpurascens are the black colour, the generally broader appearance with accentuated basal angles of the pronotum, the principally more pronounced elytral sculpture and the less obvious apical elytral striae.Published as part of Hornburg, Michael & Gottwald, Stephan, 2012, western Venezuela, pp. 64-68 in Zootaxa 3239 on pages 65-67, DOI: 10.5281/zenodo.28045
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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