1,721,030 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
Identifying COPD in primary care: targeting patients at the highest risk
No full textAim: To select and internally validate candidate variables for a risk prediction algorithm to detect chronic obstructive pulmonary disease (COPD) in primary care.
Background: COPD is vastly under-diagnosed in primary care and a variety of case finding and screening tools have been proposed to help identify patients with undiagnosed disease. Risk prediction algorithms have been developed for a variety of diseases but the development and use of such models for identification of COPD in the UK is currently limited. We used routine primary care data to identify and internally validate candidate variables for inclusion in a risk prediction model for COPD in primary care.
Method: We performed a literature search to identify potential risk factors associated with COPD. We then extracted data on 17,719 patients with an incident diagnosis of COPD (from 1st January 1990 to 31st March 2006) and 35,944 age-, sex-, and practice-matched controls from the General Practice Research Database and randomised them in a 2:1 ratio to form derivation and validation samples, respectively. The prevalence of a variety of clinical risk factors in the derivation sample (recorded at least 60 days prior to the diagnosis of COPD or equivalent matched time point for controls) was summarised. The unadjusted association between COPD and these risk factors was assessed using fixed effects conditional logistic regression. Candidate predictors were initially scoped from the literature search and then selected for a combined model based on the difference in prevalence between cases and controls, clinical face validity, and the size and statistical significance of their unadjusted odds ratios (ORs≥1.5 with p<0.05). The adjusted ORs were then estimated from a random intercept model. This model was used to formulate a risk prediction algorithm and was tested on the validation sample to assess its accuracy as measured by the area under the receiver operator characteristic curve (AUC or c-statistic) and calibration slope. Analyses were performed using Stata version 10.1.
Results: The mean age in the derivation sample was 69.7 years (SD 11.0) and 51.8% were male.Smoking status, salbutamol prescriptions and dyspnoea were the strongest predictors of COPD. Altogether nine variables were included in the combined risk prediction model including symptoms of wheeze and cough, previous diagnosis of asthma and lower respiratory tract infections (LRTI), and prescriptions of prednisolone and antibiotics for a chest infection. When tested on the validation sample this risk prediction algorithm had an AUC of 0.875 (95% CI 0.87 to 0.88). A cutpoint of 0.3 yielded a sensitivity of 86.6% and specificity of 70.1%. The algorithm performed good estimates against risk group deciles with a calibration slope of 0.98 (95% CI 0.87 to 1.10).
Conclusions: A risk prediction algorithm that includes smoking status, history of asthma and LRTI, symptoms of dyspnoea, wheeze and cough and prescriptions of salbutamol, antibiotics for respiratory infections and prednisolone appears to be highly predictive of incident COPD in primary care. This model, combined with age and sex, will be further developed and externally validated in a large screening trial for COPD in primary care (Birmingham Lung Improvement Studies, TargetCOPD). An externally validated risk prediction algorithm with sufficient sensitivity and specificity could be used to identify patients in primary care who might benefit from spirometry testing to detect COPD
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
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
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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