1,721,058 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
Erratum: A study of the Galactic star forming region IRAS 02593+6016/S 201 in infrared and radio wavelengths
No full texterratu
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
A multiwavelength investigation of G24.78+0.08 A2 using observations from VLA and VLT-VISIR
No full textContext: G24.78+0.08 is a massive star-forming region where three large massive disk-like rotating structures (toroids), namely A1, A2 and C, have been found around massive (proto)stars. In particular, while G24 A1 has been extensively investigated through multiwavelength surveys, G24 A2 has been hitherto less studied.
Aims: We carry out a detailed investigation of G24 A2 and speculate the scenario of the environment in the vicinity of the central exciting object(s).
Methods: We have carried out mid-infrared imaging observations of the G24.78+0.08 region at 11.9 and 18.7 μm using the VISIR located on the VLT. In addition, the radio continuum VLA observations at 1.3 cm as well as the NH3 (2, 2) line emission have been investigated.
Results: Compact mid-infrared emission is observed only from one source in the G24.78+0.08 region and this is likely to be associated with G24 A2. The radio continuum measurements show a faint compact source which is resolved out at higher angular resolutions (60 mas); the diameter D of the radio emitting region is estimated to be 1000 AU < D < 2000 AU. The spectral index (~1) points towards the possibility of this emission being from an ionised jet or an H II region with a density gradient. The NH3 (2, 2) emission from the main component is optically thick and appears self-absorbed at blue-shifted velocities. The velocity distributions of the NH3 lines can be explained by a motion which is a combination of rotation and expansion. Based on these observations, we speculate that the expansion is due to the outflow (seen in CO) with A2 being the likely origin of this outflow. The comparison of various properties of G24 A1 and G24 A2 like rotation, mass of cores, infrared emission, excitation temperature, suggests that G24 A2 and G24 A1 possibly harbour similar young stellar objects, but the toroid associated with G24 A2 is more inclined than that of G24 A1
- …
