1,721,016 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
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
Insights into breast cancer: New familial patterns and identification of a potential predictive marker
Get PDFThe last proportion of heredity in breast cancer has proven to be somewhat elusive despite massive attempts to identify the associated factors. Approximately 50 percent of breast cancer caused by familial factors is currently explained. The five-year survival for breast cancer patients is excellent; however, breast cancer is considered a chronic disease, and given enough time, new tumors can develop. Women age 40 and older are offered screening mammography. However, population screening is expensive, and being able to pinpoint those who are at high risk of breast cancer would be beneficial. Both genetic and environmental risk factors could be used to select women who need screening. A major aim of this thesis was to try to identify potential familial patterns as candidates for hereditary breast cancer. In Paper I, we studied horizontal family history of breast cancer in relation to histology to discover a candidate phenotype for recessive inheritance. A horizontal pedigree pattern is characterized by two or more sisters diagnosed with breast cancer, without a family history of breast cancer in prior generations. A horizontal inheritance was more common in patients with tubular carcinoma compared with other histologic subtypes. Therefore, we propose that breast cancer patients with tubular carcinoma who have a sister or sisters diagnosed with breast cancer are candidates for genetic studies when searching for a recessively inherited predisposing gene. In paper II, we studied the occurrence of cancer in first-degree relatives of breast cancer patients diagnosed with the lobular carcinoma histologic subtype compared with other histological subtypes of breast cancer. We found a hereditary pattern involving breast cancer patients with lobular carcinoma and having a father diagnosed with cancer. The association was independent of a family history of breast cancer in sisters, the mother and grandmothers. Similarly, even though prostate cancer was prominent in the fathers, the association remained after removal of fathers diagnosed with prostate cancer. In paper III, we confirmed a previously reported younger age at breast cancer diagnosis in carriers of a BRCA1 mutation of paternal origin compared with maternal origin. Additionally, we observed an older age at ovarian cancer diagnosis in carriers of a BRCA1 mutation of paternal origin compared with maternal origin. No such observations were observed for BRCA2 mutation carriers. In paper IV, we studied the occurrence of spider telangiectasias at the time of breast cancer diagnosis in relation to hormonal risk factors. We reported that the occurrence of spider telangiectasias was associated with several hormonal risk factors such as weight, parity, history of oral contraceptive use, and menopausal hormone therapy use. A better overall survival was observed in older breast cancer patients who displayed spider telangiectasias at the time of breast cancer diagnosis
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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