1,720,967 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
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
Sperm p53 concentration: a potential new biomarker for environmental pollution. Preliminary data.(EcoFoodFertility Project)
No full textStudy question:We evaluated the p53 protein concentration in spermcells to
test whether environmental pollution can affect expression levels of this protein.
Summary answer:We found a significant difference in p53 levels between
two homogeneous groups by age and lifestyle, residents in two areas with
different environmental impact.
What is known already:TheWorld HealthOrganization (WHO) has placed
among its priority objectives the understanding of the relationships between the
sources of pollution and the effects on human health, which they represent a
cause of surprisingly high mortality and morbidity.
International scientific literature shows that strong environmental impact may
jeopardize the stability and integrity of cellular DNA. This impairment can affect
cellular functions, such as the uncontrolled growth of cells with the development
of neoplastic process, until the final process of cell death (apoptosis). P53 seems
to play a key role in these mechanisms, as it coordinates cell fate.
Study design, size, duration: 237 healthy males, 18-36 years old, were
observed according to their stable residence in low environmental impact
area (LEIA) or High environmental impact area (HEIA) of the Campania
region (Southern Italy) in a period between July 2014 and June 2018. The
study group has been divided into Group A: 109 permanent residents in
LEIA, aged 19 - 36 years; Group B: 128 permanent residents in HEIA, aged
18 - 35 years.
Participants/materials, setting, methods:All partecipants were no smokers,
not habitual alcohol drinkers, no professionally exposed to environmental
pollutants, without varicoceles, prostatitis, urethritis or chronic diseases. Semen
analysis was assessed according standard criteria of WHO Manual, fifth edition
(2010). All semen samples were examined 30 minutes after collection and
immediately processed for the p53 protein assay, using ELISA test, proposed
by Raimondo et al. (2010)1. Quantitative dosage of p53 protein was expressed
in ng / million of spermatozoa.
Main results and the role of chance:We have observed not significant
differences in ejaculate volume between group A and group B. About sperm
concentration, 44,9% (40/109) of group A samples were normozoospermic
while only 20,3% (26/128) of group B samples were normozoospermic. The
quantitative dosage of p53 protein has been corrected in relation to sperm
concentration number and shows statistically significant differences between
two groups: group A had a minimum value of 0,29 ng/million of sperms and
a maximum value of 4,05 ng/million of sperms, with a mean value of 1,74
ng/million of sperms; group B had a minimum value of 0,69 ng/million of
sperms and a maximum value of 14,36 ng/ million of sperms, with a mean
value of 6,45 ng/million of sperms.Statistical analysis of the two groups was
performed using Fisher’s correlation and then Student’s test andwe obtained a p
<0.0005.The differences observed in this study underlines the efficacy of quantitative
dosage of p53 protein in identify a cell suffering due to environmental
pollution.
Limitations, reasons for caution: This is a preliminary observational
study on a small number of samples. Reasons for caution could be due to
unknown confounding factors.A large number of tests are need to confirm our
results.
Wider implications of the findings:p53 protein is well known as “guardian
of the genome” for its key role in determining the fate of the cell following DNA
damage. Quantitative dosage of p53, seems to give valuable informations on the
degree of damage to sperm DNA by environmental pollution, suggesting it as
potential new biomarker.
Trial registration number: it’s a retrospective observational study
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