1,720,988 research outputs found
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
Tergoceracris guajataca Perez-Gelabert & Otte, 2003, n. sp.
No full textTergoceracris guajataca n. sp. Figs. 3, 5 C, 6 A, 7, 8, 9, 14, 15 Diagnosis.— Similar in coloration and morphology to T. cerropunta and T. cayey while differentiated by the wing color from T. luquillensis. Differs from T. cerropunta and T. cayey as follows: Endophallic plate relatively shorter (about 1.3X as long as ventral valve of aedeagus) (Fig. 15 D); epiproct lateral ridges unilobed and offcenter mounds elongate (Fig. 6 A) (epiproct lateral ridges bilobed in T. cayey and offcenter mounds short in T. cerropunta); lophi of epiphallus more robust in dorsal view (Fig. 14 D). Description.— Male. Coloration very similar to that of T. cerropunta, both brightly adorned. Pronotum: annular area light greenish brown in center surrounded by black and cream yellow bands. Wide band at pronotal side green and light brown, followed below by arched cream yellow band that delimits smaller portion of green on lower margin. Wings: Tegmina short, pink reddish with some black on posterior edge, with surface markedly reticular. Abdomen: dorsal midline marked by interrupted black streak. Furculae vertically elevated, slightly longer and thinner than in the other Puerto Rican species, ascending jointly, narrowing, then separating and widening only slightly on upper portion. Internal genitalia: As illustrated in Figs. 14, 15. Etymology.— The name is derived from the type locality. Type material.— Holotype: Male. PUERTO RICO, Guajataca St. Forest, 7 miles SE Isabela, 600 ft. (200 m), 20.vi. 1969, T. J. Cohn (ANSP). Allotype: female. Same data as holotype (ANSP). Paratypes: One male, 2 females, same data as holotype (ANSP). Habitat.—Specimens were collected at about 600 ft.( 200 m) of elevation in the Guajataca State forest, near Isabela, Puerto Rico. This area is substantially lower than for the three other species. Vegetation there is mostly wet tropical forest. In a visit to this reserve and search around several trails by the senior author and Santo Navarro in October 2001, this forest was found to be rather dry and no specimens of these grasshoppers were encountered.Published as part of Perez-Gelabert, Daniel E. & Otte, Daniel, 2003, Tergoceracris, a new genus and six new species of montane grasshoppers (Orthoptera: Acrididae: Ommatolampinae) from Dominican Republic and Puerto Rico, pp. 1-31 in Zootaxa 155 on pages 6-7, DOI: 10.5281/zenodo.15697
Tergoceracris luquillensis Perez-Gelabert & Otte, 2003, n. sp.
No full textTergoceracris luquillensis n. sp. Figs. 2, 3, 5 F, 6 C, 7, 9, 20, 21 Diagnosis.— Differentiated from the other species as follows: furculae relatively short, not much flared at apex (Fig. 5 F); epiproct lateral ridges unilobed; off center mounds low, poorly developed (Fig. 6 C); tegmina green; lophi of epiphallus very elongate (Fig. 20 D). Description.— Male. Body completely green except for abdominal segments which are greenish brown. Head: Antennae with first 5 segments reddish, the rest brown. Pronotum: dorsally marked by dark annular area surrounded by concentric cream yellow bands. Pronotal side mostly green but with darker black band that does not reach either pronotal margin. Cream yellow band on pronotal side extending over to head. Wings: Tegmina slightly longer than pronotum length and completely green, with surface markedly reticular. Posterior area of wings more acute than in the other species. Abdomen: abdominal segments brown. Vertically elongated furculae smaller than in all other species, narrowing only slightly in the middle, flattening, separating but not widening on upper portion. Internal genitalia as in Figs. 20, 21. Etymology.—Name in aposition, in reference to its type locality. Type material.— Holotype: Male. PUERTO RICO, Luquillo Mts., 3,000 ft., Pico del Oeste, Harvard University Study Site, 26.vi. 1969, T. J. Cohn (ANSP). Allotype: Female. Same data as holotype (ANSP). Paratypes: One adult and four juvenile males, 2 adult females, same data as holotype (ANSP). Two males and 6 females, Sierra de Luquillo, Pico del Oeste, (in Luquillo Experimental Forest), 1150 m, 1718.vii. 1967, R. A. Howard, (UMMZ). One female, onlybearing El Yunque, Puerto Rico as collecting data (NMNH). One female, El Yunque, Caribbean National Forest, 1.4 km on trail to El Toro, on Ocotea leucoxylon (Lauraceae), 26.x. 2001, D. E.PerezGelabert and M. A. García, (DEPG). Habitat.— Wet forest in Sierra de Luquillo, eastern Puerto Rico. Some of the specimens collected by R. A. Howard have notes indicating they were taken on Tabebuia radiata (Bignoniaceae), and were observed tofeed on this plant. The female collected by the senior author in 2001 was found at the edge of the trail at an altitude of 700 800 m on Ocotea leucoxylon (Lauraceae).Published as part of Perez-Gelabert, Daniel E. & Otte, Daniel, 2003, Tergoceracris, a new genus and six new species of montane grasshoppers (Orthoptera: Acrididae: Ommatolampinae) from Dominican Republic and Puerto Rico, pp. 1-31 in Zootaxa 155 on pages 8-9, DOI: 10.5281/zenodo.15697
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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