1,720,954 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
No full text“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
No full textWe 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
No full textWe 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
Segmental resection, lymph nodes dissection and survival in patients with left colon cancer
No full textBACKGROUND/AIMS:
To evaluate retrospectively in patients who have undergone elective surgery for left colon cancer, if extent of segmental resection may affect postoperative outcome, lymph nodes dissection and long-term survival.
METHODOLOGY:
With lesion localized at the sigma or descending colon, 129 patients were divided into two groups according to the length of operative specimens: group 1: 73 cases, length 8 to < or =25 cm, who were surgically treated with limited segmental resection; group 2: 56 cases, length >25 to >50 cm, who had undergone extensive segmental resection. In no patient was ligation at the root of the inferior mesenteric artery performed. Lymph node dissection of pericolic nodes (N1) and occasionally intermediate nodes (N2) in group 1 and electively of N1 and N2 nodes in group 2 was carried out.
RESULTS:
Median follow-up was 60 and 56 months for group 1 and 2, respectively. In group 1 a median of 8 lymph nodes were removed compared to a median of 13 nodes retrieved in group 2, where a significant prevalence of N2 nodes was found compared to group 1 (p = 0.024). The incidence of N+ cases according to the total number of nodes removed is superimposable in the two groups. Overall disease-free survival was better, but not significantly, in group 1 compared to group 2; whereas actuarial survival curves of Dukes C cases, according to two types of resection, were similar.
CONCLUSIONS:
This retrospective study shows that in patients with left colon cancer long-term survival does not seem to be significantly affected by the extent of segmental resection
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
In situ ductal carcinoma of the breast: current status and our experience
No full textINTRODUCTION: Selecting the appropriate treatment strategy for the individual patient with DCIS represents a major challenge to the surgeon treating breast cancer in the 1990's. CASES AND METHODS: In this study 48 "pure" DCIS patients, treated at Surgical Department of Genoa University, have been selected and divided into Van Nuys prognostic groups. New prognostic classification (Van Nuys) defines three distinct and easily recognizable groups, each of which has a different likelihood of local recurrence if treated with breast conservation. RESULTS: Our results confirm that the risk of local recurrence increases in close relation with prognostic classification groups and suggests that different forms of DCIS may require different treatments
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