1,720,987 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
Improved decision making from clinical trial evidence in an era of personalised oncology
Get PDFThe program of research reported in this thesis addresses challenges in clinical trial design arising in the era of personalised oncology. Specifically: the value of progression free survival (PFS) as a surrogate for overall survival (OS) in first line trials of advanced ovarian cancer (Ch 2); the use of a control group and subgroup analyses in a randomised phase 2 trial of regorafenib in advanced oesophago-gastric cancer (Ch 3); the value of central review of imaging when used as key end point (Ch 4); and, the ability of a nomogram to improve prognostication in advanced colorectal cancer trials (Ch 5).
METHODS
Meta-analysis of published data from randomised phase 3 trials (Ch 2); primary and secondary analyses of randomised phase 2 clinical trial with primary end point of PFS (Ch 3); evaluation of central review for key end points in a randomised phase 2 trial (Ch 4); development of nomograms for PFS and OS from a database of randomised trials in advanced colorectal cancer (Ch 5).
FINDINGS
Ch2: PFS may not be a good surrogate for benefits on OS in first line ovarian cancer trials where participants are later treated with multiple lines of active salvage therapies. However, PFS may be useful for understanding heterogeneity of treatment effects across subgroups in this setting.
Ch 3: PFS was a useful measure of the activity of Regorafenib, a targeted therapy, as second- or third-line treatment for advanced oseophago-gastric carcinoma. PFS was also a useful indicator of the homogeneity of the treatment effect of regorafenib in most subgroups, but raised the hypothesis of a larger treatment effect in residents of South Koreans than of Australia, New Zealand, or Canada. The control group was helpful because a priori estimates from historical controls proved inaccurate.
Ch 4: treatment effects based on investigator-assessed PFS were accurate, unbiased, and robust in INTEGRATE (1). Central review of PFS in INTEGRATE (1) was feasible and corroborated the trial conclusions. Effective blinding with placebo, and a large treatment effect, meant that substantial error would have been needed for central review to change conclusions.
Ch 5: A practical risk assessment tool was developed, providing prognostic information useful for risk stratification in future clinical trials, and for guiding personalised decision-making in routine practice, for patients with advanced/metastatic colorectal cancer commencing first line systemic therapy.
CONCLUSIONS
This research has demonstrated considerations pertinent for determining: the usefulness of PFS as an indicator of activity, and to determine effects across subgroups; the validity and need for central review in a placebo-controlled trial; baseline risk assessment for better trials and clinical decision making
A Phase II study to evaluate the safety and potential palliative benefit of intraperitoneal bevacizumab in patients with symptomatic ascites due to advanced chemotherapy resistant gynaecological cancers: REZOLVE dataset
No full textThis dataset includes 24 female participants (38 - 86 years old) receiving intraperitoneal bevacizumab recruited into the REZOLVE study from six hospitals in New South Wales, Queensland and Victoria, Australia. Baseline data includes demographics, ECOG performance status, prior systemic treatment, doses of the intervention administered, clinical chemistry, quality of life, adverse events and overall survival. Follow-up data was collected within three months after the first intraperitoneal administration of bevacizumab and includes adverse events and quality of life. The file type is .XLS
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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