1,721,012 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
Tabiat kemeruapan perubahan harga getah asli Malaysia
No full textThis study presents the trend of volatility in natural rubber price of Malaysia for Ribbed Smoked Sheet Grade 1 (RSS 1) and Standard Malaysian Rubber Grade 20 (SMR 20). The price changes in RSS 1 and SMR 20 indicate that the empirical distributions have heavy tails and sharp peaks at the center compared to the normal distributions. In addition, the variance underlying these price variables may be varying over time.Therefore, the data cannot be modeled as standard time series model with assumption variance is constant over time. Alternatively, ARCH and GARCH model were used. One of the parts that many researchers are interested is the asymmetry (leverage effect) in the variance. In this study, this part has been captured by two model of the ARCH family: the EGARCH and GJRGARCH. Result indicates that both EGARCH and GJR-GARCH models did not generally support asymmetry in the pattern of volatility of both RSS 1 and SMR 20. After comparing of these four models, it can be shown that the GARCH (1,1) model fit to data very satisfactorily.
Kajian ini akan membincangkan corak kemeruapan harga bagi dua
kategori getah asli iaitu Getah Asap Berbunga Gred Satu (RSS 1) dan
Getah Mutu Malaysia Gred 20 (SMR 20). Perubahan harga RSS 1 dan
SMR 20 menunjukkan taburan empirik kedua-dua set data mempunyai
ekor yang tebal dan puncak yang lebih tajam berbanding taburan
normal. Selain itu, varians bagi kedua-dua set pembolehubah sentiasa
berubah merentasi masa. Keadaan ini menyebabkan andaian klasik tidak
dipenuhi, seterusnya model siri masa biasa dengan andaian varians malar
tidak boleh diguna pakai untuk tujuan analisis. Sebagai alternatif, model
ARCH dan GARCH digunakan. Selain daripada itu, model EGARCH dan
GJR-GARCH digunakan bagi melihat kewujudan sifat tidak simetri dalam
kemeruapan harga RSS 1 dan SMR 20. Hasil yang diperolehi menunjukkan
sifat tidak simetri tidak wujud. Perbandingan yang dilakukan terhadap
keempat-empat model yang digunakan menunjukkan model GARCH (1,1)
merupakan model terbaik dalam penyuaian data RSS 1 dan SMR 20
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
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
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