1,721,071 research outputs found
Comparison of high performance liquid chromatography and microbiological assay for the determination of ofloxacin in serum and urine in humans. International Journal of Immunopathology and Pharmacology, Vol. 3,3, p. 159-165, 1990
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Quantitation of enantiomers of furprofen in biological fluids by high performance liquid chromatography.
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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
The Study of Networked Content: Five Considerations for Digital Research in the Humanities
No full textDigital research is taking the humanities by storm. This can be read not only from the many digital humanities programs in education and research in universities around the world but also from the attention for new media practices in humanities and art departments. Famously, and thought-provokingly, media theorist Lev Manovich—strongly rooted in film and media studies—set out to develop a means by which the visual analysis of big data sets of digitized cultural materials could help the study of art and culture transition into the era of big data or, as he calls it, 90the era of “more media” (Manovich, 2009). Often met with scrutiny by art historians, not in favor of a quantitative approach to the arts, Manovich insisted with this “cultural analytics” program on expanding the study of culture by including the vast amounts of user-generated content. As he wrote as early as 2009: “Think about this: the number of images uploaded to Flickr every week is probably larger than all objects contained in all art museums in the world.” Manovich developed the Software Studies Initiative, where he and his team developed software such as Image Plot, for the analysis of large visual data sets. Manovich applies his methods both to digitized materials (such as Time magazine covers) as well as—more recently—to born-digital content (such as selfies on Instagram)
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
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