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Andamento annuale della struttura della comunità macrozoobentonica e dei valori di IBE nel Rio Bunnari (Sardegna)
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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
Statistical Analysis and Critical Aspects of Surface Measurement using Mechanical Pin-Wheel Machines
No full textThe publication of the "Measuring Instruments Directive - MID" (European Directive 2014/32/UE) has determined the inclusion of area measuring machines in the category of legal metrology devices. Leather must follow similar rules for other goods traded by means of a measurement. Finished leathers are usually sold by area and the measurement for verification purposes in commercial trades is regulated by the International Contract No 7 (1998) between the ICT and the ICHSLTA. This contract provides specific indications on commercial issues and defines rules for area checking in case of legal disputes. In general, the contract allows the use of any agreed machine between seller and buyer (mechanical or optoelectronic), but in the event of a dispute it refers exclusively to pin-wheel machines according to ISO 11646 standard. This requirement has been defined without the provision of any technical support and does not consider the deviations of the results using other devices. Furthermore, ICT and ICHSLTA agreed that official controls shall be carried out only in specific Measurement Institutes, among which only 5 around the world have a working instrument, and only one has accredited the test according to ISO/IEC 17025. In this study, 13 small batches of different leather articles were used in an interlaboratory trial that involved 8 participants, including 4 European ICT/ICHSLTA official Measurement Institutes. By means of a statistical analysis of the results, the scope of this study is the identification of critical aspects related to the use of pinwheel machines with particular reference to leather (dimension, deformability, etc) and device characteristics
Struttura e dinamica stagionale della comunità macrozoobentonica e dei valori di I.B.E. nel rio Bunnari (Sardegna)
No full textDispelling 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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