1,720,957 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
To the knowledge of the fauna of geometrid moths (Lepidoptera: Geometridae) of Dzungarian Alatau, Kazakhstan
Get PDFThe annotated list of 133 species of geometrids (Lepidoptera) from Dzungarian Alatau in Kazakhstan is given; 42 species are recorded for this ridge for the first time. The material is deposited in Institute of Animal Systematics and Ecology of the Russian Academy of Sciences (Novosibirsk, Russia) and in the private collection of the second author. The species Aplocera dzungarica Vasilenko, 1995, stat. resurr. is resurrected from subspecies to species. Diagnostic characters of the rare species Lycia degtjarevae Viidalepp, 1986 are summurized and differences from the alied species L. hirtaria (Clerck, 1759) are given. We established that the first species occurs in Central and Southern Kazakhstan, while reliable records of the latter one is known only from northern part of the country. Data on records of Xanthorhoe asiatica (Staudinger, 1882) and X. tauaria (Staudinger, 1892) on the territory of Russia belong to X. insperata (Djakonov, 1926) and X. dudkoi Vasilenko, 2009, respectively. A brief characteristics of the ecological structure of the geometrid fauna of Dzungarian Alatau is proposed. Features of species distribution on this territory are summurize
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
To the knowledge of the fauna of geometrid moths (Lepidoptera: Geometridae) of Tajikistan
Get PDFThe materials on geometrid moths that
were collected by the members of Russian entomological
expedition in Tajikistan in 2015–2018 are studied. An
annotated list of 83 species of geometrid moths is given.
The existing taxonomic problems of morphologically
similar species with close barcoding of DNA are
discussed: Aplocera hissara Vasilenko, 1995 – A. plagiata (Linnaeus, 1758) and Epirrhoe dubiosata (Alphéraky, 1883) – E. alternata (Müller, 1764). These pairs of species occurring parapatrically have different ecological preferences. Aplocera plagiata is widely distributed in lowlands of Central Asia; sometimes the species occurs in low- and middle-mountains. Most of the mountain systems of this region are populated by close species A. hissara and A. dzungarica Vasilenko, 1995. For example, in Turkmenistan A. hissara inhabits only the
isolated Kugitang plateau, while A. plagiata occurs in
the surrounding plains and Kopetdag; the second species
has not yet been collected in Tajikistan, but can be found
in the future. Epirrhoe alternata was collected only in
low-mountains, in humid floodplain biotopes, while
E. dubiosata inhabits steppe areas in middle-mountains;
this data indirectly evidence about the species level of
both taxa. The species Rheumaptera montivagata (Duponchel, 1830), Eupithecia subpulchrata Alphéraky, 1882, Idaea obsoletaria (Rambur, 1833), Scopula ansulata (Lederer, 1871) and S. minorata (Boisduval, 1833) are recorded for the region for the first time. Two species, Menophra sp. and Idaea sp., need further studying
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