1,720,970 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
Appendix to the Paper of Scholl
No full textLet X/Q be a smooth projective (but not necessariy geometrically irreducible) variety, and let χ be a flat proper model of X over Z. Then the image of the map K′∗(χ)⊗Q→K′∗(X)⊗Q=K∗(X)⊗Q (1) is independent of the model χ
Bounding generators for the kernel and cokernel of the tame symbol for curves
No full textLet C be a regular, irreducible curve that is projective over a field. We obtain bounds in terms of the arithmetic genus of C for the generators that are required for the cokernel of the tame symbol, as well as, under a simplifying assumption, its kernel. We briefly discuss a potential application to Chow groups.</p
Developing a circularity self-assessment tool: a case study for the Dutch plastics industry
No full textThe European Commission published the “EU action plan for the Circular Economy” in 2015, the Dutch government strives for a circular Netherlands before the year 2050 (Rijksoverheid, 2016) and Rotterdam aims for circularity as the norm in 2030 (Rotterdam Circulair, 2018). To reach these goals, set by governmental organisations, change is required in all levels of society: individuals, municipalities, companies and other types of organisations. This master thesis focuses on the role of companies in the transition towards a circular economy. Companies often have limited insights in their circular performance. A current state analysis is needed to set realistic targets and keep track of the progress. Currently, there is a lack of workable tools that facilitate this analysis. For such a tool to contribute to the acceleration of the progress towards a circular economy, it is considered of great importance that it is easy in use and stimulates the user to action. This research developed a self-assessment rubric to create insights in the circular performance of an individual company. A case study was conducted for the Dutch plastics industry. The result was tested in cooperation with three companies and the results proved to generate relevant insights
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