1,721,100 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
Appropriate 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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
Analysis of morbidity in patients with endometrial cancer: Is there a commitment to offer laparoscopy?
No full textObjective. Benefits of laparoscopy over laparotomy in patients with endometrial cancer (EC) are well known. As many patients with EC carry co-morbid conditions, surgery is exposing them to increased risk of complications. A review of the patients with EC recruited so far in a clinical trial comparing laparoscopy to laparotomy was performed. The goal was to identify patients carrying specific risk factors for complications, who would most benefit of laparoscopy and be the ideal candidates for this surgical approach. Patients and methods. Between July 1995 and December 2002, 122 patients with uterine cancer entered the study. Sixty-three patients were allocated to the laparoscopy (LPS) arm (group A), while 59 were allocated to the laparotomy (LPT) arm (group B). Rate and type of intra-, early and late post-operative complications were prospectively recorded. Risk factors for complications are analyzed to define a group of patients truly benefiting from laparoscopy. Results. Overall, 12 patients out of 122 (9.8%) have experienced intra-operative, 43 patients out of 122 (35.2%) early post-operative and 25 patients out of 122 (20.4%) late post-operative complications. Rate of intra-operative complications was 4.7% in group A (3 patients out of 63) vs. 15.2% in group B (9 patients out of 59), P = 0.082. Early post-operative complications rate was 23.8% in group A (15 out of 63) and 47.4% in group B (28 out of 59), P = 0.011. Rate of late post-operative complications was 7.9% (5 out of 63) in group A vs. 35.5% (21 out of 59), P = 0.001. Univariate analysis shows co-morbid medical conditions, weight >80 kg, Quetelet index >30 and age >65 years to be predictive of complications and, in fact, a subgroup of patients presenting with these characteristics (n = 57, 30 in group A and 27 in group B) has been recognized to accumulate 60% of the overall complications. In these patients, multivariate analysis identifies the surgical technique (LPS vs. LPT) to be the only significant risk factor for complications. Conclusion. At least one third of the patients with EC carry serious co-morbidities with an increased surgical risk for complications. For this subgroup of patients, a laparoscopic-vaginal approach significantly reduces the rate of complications and should be the standard of surgical treatment. © 2004 Elsevier Inc. All rights reserved
Laparoscopy versus laparotomy in endometrial cancer: First analysis of survival of a randomized prospective study
No full textSTUDY OBJECTIVE: Laparoscopy has been proved to be safe and reliable in staging of patients with endometrial cancer. It has definite advantages over laparotomy, but a comparable survival outcome is still to be verified in prospective randomized trials. DESIGN: Prospective, randomized clinical trial. SETTING: Department of Gynecology, Friedrich Schiller University, Jena, Germany. PATIENTS: One hundred twenty-two women with uterine cancer. INTERVENTIONS: Laparotomy and laparoscopy. MEASUREMENTS AND MAIN RESULTS: Sixty-three patients were allocated to the laparoscopy arm, and 59 were allocated to the laparotomy arm. Median follow-up for all patients was 44 months (range 5-96 months). Eight patients (12.6%) in the laparoscopy group had a recurrence versus five patients (8.5%) in the laparotomy group (p = .65). At median follow-up, disease-free survival (DFS) and overall survival (OS) in the laparoscopy group and laparotomy group were 87.4% versus 91.6% and 82.7% versus 86.5%, respectively. Cause-specific survival (CSS) was 90.5% in the laparoscopy group versus 94.9% in the laparotomy group. In patients with International Federation of Gynecology and Obstetrics stage I, DFS was 91.2% in the laparoscopy group versus 93.8% in the laparotomy group, OS was 86.5% versus 89.7%, and CSS was 93.4% versus 95.9%. CONCLUSION: Laparoscopic vaginal treatment of patients with endometrial cancer provides a survival outcome comparable with laparotomy. If these data are confirmed, laparoscopic procedures should be included in routine therapy for patients with endometrial cancer. © 2005 AAGL. All rights reserved
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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