1,720,966 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
Quantitative easing: New normal or emergency measure?
No full textThis article explores the economic justification of the use of unconventional monetary policy instruments such as asset purchase programmes (known as quantitative easing, QE) with the aim of assessing the nature of QE in the context of future monetary policy in Poland. Since 2008, numerous asset purchase programmes have been launched by central banks in major developed economies to raise economic growth and inflation in the aftermath of the Global Financial Crisis. These programmes can be seen either as part of broader, longer trends (demographic, socioeconomic) or as an emergency measure (i.e. a response to unique circumstances). The former hypothesis calls on central banks to treat unconventional monetary policy instruments as a necessary part of their toolbox, while the latter implies that QE is unlikely to be used again in the future. Drawing from a wide set of macroeconomic data and a proprietary literature review, I describe the macroeconomic context for unconventional monetary policy, present arguments for both paradigms and their implications. I conclude that recent developments favor the former hypothesis and that this debate will most likely be settled within several years and can be informed by business cycle developments in major developed economies
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
Optimal Empirical Strategy for Deriving the Spot Curve: The Case of Poland
No full textWe use a proprietary dataset of daily quotations of individual bonds from the period 2005–2018 to assess the
appropriateness of three common yield curve intrapolation methods: Nelson-Siegel (NS), Diebold-Li (DL) and cubic
splines. Spot (zero-coupon) yield curves derived from the methods are used to price all securities in the sample
in both in-sample and out-of-sample settings. The results highlight trade-offs inherent in any empirical strategy:
between flexibility and in-sample fit, between overall fit and fit in particular segments of the curve. We look at
both in-sample and out-of-sample. Cubic splines offer the best in-sample fit, but out-of-sample results indicate
that NS and DL curves might be a better choice for researchers interested in medium- and longer-dated securities.
We also assess the usefulness of short-term interbank offered rates as proxy for the shortest part of the yield
curve, finding no appreciable empirical benefit and lack of theoretical justification
The impact of quantitative easing on emerging markets: Literature review
No full textThe article presents the results of the review of the empirical literature regarding the impact of quantitative easing (QE) on emerging markets (EMs). The subject is of interest to policymakers and researchers due to the increasingly larger role of EMs in the world economy and the large-scale capital flows occurring after 2009. The review is conducted in a systematic manner and takes into consideration different methodological choices, samples and measurement issues. The paper puts the summarized results in the context of transmission channels identified in the literature. There are few distinct methodological approaches present in the literature. While there is a consensus regarding the direction of the impact of QE on EMs, its size and durability have not yet been assessed with sufficient precision. In addition, there are clear gaps in the empirical findings, not least related to relative underrepresentation of the CEE region (in particular, Poland)
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