1,721,002 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
S1830 Microscopic Colitis as an Unusual Gastrointestinal Complication of Pembrolizumab Therapy: An Important Clinical Update
No full text2021 Outcomes with Mismatched Unrelated Donor Allogeneic Hematopoietic Stem Cell Transplantation: A Systematic Review and Meta-Analysis
No full textThree essays on the UK Electricity Market: Risk Premium,Uncertainty of Supply and Forecasting
Get PDFThis thesis investigates three issues related particularly to the UK electricity wholesale market. The first issue is whether the electricity forward market offers risk premia to compensate for the uncertainty of renewable supply. The empirical results suggest that the UK electricity forward market provides risk premia, which is higher for electricity generated from renewable sources as a compensation for the uncertainty of renewable supply. Secondly, the role of imbalances between demand and supply of electricity on the reduction in electricity prices as a result of merit order is investigated. The main finding is that imbalances due to uncertainty of supply influence the merit order effect. Moreover, the reduction in electricity wholesale prices due to electricity generation from wind is greater in case of deficit than surplus of electricity, which provides direction for participants in devising their balancing strategies. Finally, the third issue investigated is to improve prediction of electricity day-ahead prices. For this, a new method is proposed to estimate the long-term seasonal component, named as the multi-stage optimization filter with a leading Phase Shift (MOPS) to filter the data into trend and residual, and then forecasts for the trend and residual are generated separately and later combined. The proposed method for trend estimation performs better in terms of providing electricity day-ahead price forecasts as compared to some well-known trend estimation methods, such as frequency filters, wavelet decomposition, empirical mode decomposition and hodrick–prescott (HP) filter according to the Diebold and Mariano (1995) test
Effect of Acute Kidney Injury on Hospital-Based Outcomes in Patients Admitted for Variceal Hemorrhage in the Years 2017-18
No full textS1077 Non-Alcoholic Fatty Liver Disease Is Associated With Worse Outcomes in Hospitalized Patients With Acetaminophen Toxicity: A Retrospective Cohort Study
No full textDispelling 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
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