1,727,455 research outputs found
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
Using keyword spotting systems as tools for the transcription of historical handwritten documents: Models and procedures for performance evaluation
No full textThe paper proposes a performance model for estimating the improvement of the time needed to transcribe small collections of handwritten documents by using a keyword spotting system (KWS) with respect to the time for manually achieving the transcription. The proposed model assumes that no other information than those obtained from the samples and the KWS system performance on the training set are available, and, depending on them, establishes analytically the condition the performance measures must satisfy to make it profitable to use the system, and, in the affirmative case, estimates the gain and the accuracy of such estimation. The model is complemented by a step-by-step procedure for building the training set, running the KWS on it, estimating the performance parameters on the data set, and eventually estimating the overall improvement and the accuracy of this estimate
Tax policies in times of recession
No full textThe recent history of Europe is replete with cases of financial crises, both of local (Norway, 1987; Finland and Sweden, 1991) and global nature (in 2008 European financial markets suffered the contagion from the financial crisis that had burst in the US). These serious financial markets turmoil always produced strong constraints to the liquidity of the economic system and triggered deep economic recessions. Although there is general agreement that these economic crises were not generated by tax related factors, some distortions or non-neutralities within the tax system may have exacerbated the spam and magnitude of the economic crisis. This paper analyzes the cases of post-crises tax reforms implemented in North European countries in late 1980s – early 1990s and in (many of) the 27 EU countries in 2008-2010. For the three North European countries, the tax reforms are evaluated as far as their consistency with objectives of economic recovery and inequality reduction is concerned. Such an evaluation is not yet possible for the most recent economic downturn, therefore the tax reforms implemented by EU countries are described and their consistency with economic recovery and long-term growth is discussed
Software Supports for Event Preemptive Rollback in Optimistic Parallel Simulation on Myrinet Clusters
No full textAppropriate 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
Transparent State Management for Optimistic Synchronization in the High Level Architecture
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