1,721,387 research outputs found
The Correlation of Microsturcture and Stress Corrosion Fracture of HY-130 Steel Weldments
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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
Microstructure and Stress Corrsoion Cracking of HY-130 Welds, Part Ⅰ:The Effect of Welding Variables on Microstructure of HY-130 Steel Weldments
No full textMicrostructure and Stress Corrosion Cracking of HY-130 Welds, Part Ⅱ:Fractographic Studies of Stress Corrosion Cracking of HY-130 Steel Weldments
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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
Counterfeit detection for new and old currency designs
No full textTo test the effectiveness of counterfeit deterrence features recently introduced in US currency, observers were asked to discriminate genuine from counterfeit bills using a two-alternative forced-choice task. In Experiment 1, observers judged 100s without any training. They then were trained and judged 20 bills. Taken together, the two experiments indicate that people are good at detecting counterfeits, that inkjet counterfeits are easier to detect than offset counterfeits, and that counterfeits of the newly designed bills are easier to detect than counterfeits of the older series. The design improvement was greatest with 50 bills. Improvement was minimal with 20s. Finally, some deterrence features were more useful than others in aiding discrimination
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