1,720,995 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
Does the Long-Term Interest Rate Predict Future Inflation? A Multi-country Analysis.
No full textAccording to the Fisher hypothesis, an increase (decrease) in the spread between the long-term, or multiperiod, interest rate and the one-period inflation rate signals an increase (decrease) in future one-period inflation. This implication is tested on data from thirteen OECD countries for the period 1962-93. Integration and cointegration techniques are applied to examine the time-series properties of interest rates and inflation rates, and the VAR methodology developed by John Y. Campbell and Robert J. Shiller (1987) is applied to examine the predictive power of the spread as well as in testing the Fisher hypothesis under rational expectations and constant ex ante real rates. Copyright 1995 by MIT Press.
Misspecification versus bubbles in hyperinflation data: Comment.
No full textIn this comment I critically review some of the claims and analyses made by Hooker (2000) in his study of the Cagan hyperinflation model. I argue that: i) contrary to what Hooker claims, cointegration tests can be used to discriminate between bubbles and no bubbles; ii) contrary to Hooker's claim, his empirical results for the interwar European hyperinflations do not general imply that the Cagan model is misspecified; iii) although Hooker's analyses build directly on the Durlauf and Hall (1989) methodology, he neglects an important part of that methodology, namely the measurement of the magnitude of noise. I present such measures, and together with reported cointegration tests the noise measure help reinterpreting Hooker's empirical results.Cagan model; Cointegration; Measurement of noise
The Classic European Hyperinflations Revisited: Testing the Cagan Model Using a Cointegrated VAR Approach.
No full textThe Cagan model of hyperinflation under rational expectations, no bubbles and stationary velocity shocks has the implication that real balances cointegrate with money growth. In a reexamination of the classic European hyperinflations, I find support for this cointegrating property, which gives evidence against the assumption made in most previous studies that velocity shocks follow a random walk. Based on a cointegrated VAR model, I reject statistically, for four of the six hyperinflations, the exact rational expectations Cagan model; but at the same time I find evidence of a substantial forward-looking element in agents' demand for real balances, in the sense that a large part of the predictable movement in money growth is incorporated in agents' demand for money. Copyright 1994 by The London School of Economics and Political Science.
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