1,720,972 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
IgG protection status for humoral immune response to MMR vaccine among the Norwegian population of children and method assessment of MMR-Multi-Plex Immunoassay
Get PDFBackground and aim: In order to prevent sudden outbreaks of serious disease, immune response to vaccines should be monitored to investigate the overall status of protection in a given population as well as identifying susceptible groups or individuals with a reduced or a negative response. The measles -mumps -rubella (MMR) vaccine is a live-attenuated combined vaccine used for the prevention of measles, mumps, and rubella. The main purpose of this study was to investigate the status of protection against measles, mumps, and rubella among the Norwegian population of children using IgG antibody concentrations as an indicator for humoral immune response to the MMR vaccine. An additional goal was to perform method assessment of MMR Multi-Plex Immunoassay by investigating intra-assay precision and interoperator reproducibility of IgG measurements.
The study population and method: The study population were a part of The Norwegian Mother, Father and Child Cohort study (MoBa) including 306 children between the ages of 7 and 14. The collection of experimental material was performed by the Norwegian Environmental Biobank (NEB) during 2016-2017. The plasma IgG against measles, mumps, and rubella pathogen antigens were analysed using MMR Multi-Plex Immunoassay. Following IgG “protective levels” were set for each antigen: measles; >200 mIU/ml, mumps; >500 AU/ml, and rubella; >10 IU/ml, where concentrations below these thresholds were considered as “unprotected”. The intra-assay precision assessment was performed by the investigation of CV% values, and inter-operator reproducibility assessment was accomplished with the help of scatter plots, Lin’s Concordance Correlation Coefficient analysis, Bland-Altman plots, and reanalysis of plasma samples.
Results: The majority of IgG antibody concentrations were above ‘protective level’ for all three antigens (measles: 97.1%, mumps: 63.1%, rubella: 89.2%). Overall, 2.3% of the children had IgG antibody concentrations below ‘protective level’ for all the three antigens. Notably, the proportion of ‘unprotected’ children varied for the three pathogens with lowest protection rates for mumps (36.9% below protection limit) while only 2.9% and 10.8% were ‘unprotected’ for measles and rubella respectively. The intra-assay precision results showed high precision with low mean CV% values of duplicates for all the three antigens (measles: 3.9%, mumps: 3.0% and rubella: 3.5%). The assessment of inter-operator reproducibility showed an overall high agreement between operators for IgG levels measured against all three pathogens.
Conclusion: According to obtained results, the MMR Multi-Plex Immunoassay revealed a good intra-assay precision for the measurement of IgG levels against measles, mumps, and rubella. The results indicate an overall high degree of IgG antibody protection against measles, mumps, and rubella within the study population, which further indicates a substantial MMR vaccine effectiveness and heard immunity. However, a larger proportion of children were unprotected against mumps in comparison to measles and rubella indicating a possible need for booster vaccines or advances in vaccine technology against mumps
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
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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