1,721,235 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
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
The reproductive biology and cytotoxic activity of Persicaria chinensis (L.) H. gross var. chinensis (polygonaceae) / Wong Min May
Get PDFPersicaria chinensis var. chinensis is a native variety in Malaysia and found in
the tropics growing in lowland and lower montane forests. Growth habit and
morphological differences were observed between the highland and lowland varieties.
The anthesis of the highland wild population was at 0600–0730 hours whereas that of
the lowland variety was at 0745–0930 hours.
The anther is tetrasporangiate and the wall development conforms to the
Monocotyledonous type. Cytokinesis in the microspore mother cells is simultaneous
forming tetrahedral and decussate tetrads in the highland variety and mostly tetrahedral
tetrads in the lowland variety. The mature pollen grains are shed at the three-cell stage.
The ovule is orthotropous, bitegmic and crassinucellate and the micropyle is formed by
both the outer and inner integuments. The development of the embryo sac conforms to
the monosporic Polygonum type. An occurrence of twin eggs within an ovule was
observed in the lowland variety. In the highland variety, the development of the
endosperm is ab initio Nuclear type.
The highland variety is heterostylous; pin flowers have taller style, shorter
filaments, less thick and less wide stigma than the thrum flower. The number of pollen
grains in a pin flower is higher than that in a thrum flower. The pollen grains of the
thrum flowers are bigger than those of the pin flowers. The pin and thrum pollen grains
are 3-colpate, medium-sized, suboblate to oblate and have reticulate exine with thick,
narrow muri and free clavae in the deep lumina.
The lowland variety is observed to have only thrum flower. They have shorter
style, longer filaments, thicker and wider stigma than those of the highland thrum
flowers. The pollen grains of the lowland variety are bigger than those of the highland
thrum flowers. Their lumina were less wide and the muri were thicker, less narrow and
shorterthan those of the highland thrum pollen with free clavae.
In the highland variety, the optimum sucrose and PEG concentration for pollen
germination was 15% and 30% respectively. Bursting of pollen grain occurred in the
medium without PEG. Pollen grains reached maximum germination (50%) in the
modified medium with an average pollen tube length of 140 µm.
The highland variety of P. chinensis var. chinensis was self-compatible. Open
pollination produced three times more fruits than self pollination and they are crosscompatible and show outbreeding. The pollen-ovule ratio suggested the breeding
system was facultative xenogamy. The most common insect visitors are from the Order
of Hymenoptera. Seed germination is epigeal showing 77% viability. The average
percentage of germination for the fresh seeds was 47% in the natural highland
environment and 34% in the lowland laboratory environment.
In Malaysia, P. chinensis var. chinensis has been used traditionally as one of the
main ingredients in Chinese traditional medicine to treat various lung ailments
including cancer. The in vitro neutral red cytotoxicity assay was successfully applied to
screen the cytotoxic activity against 18 crude methanol, dichloromethane and water
extracts from the highland and lowland varieties of P. chinensis var. chinensis derived
from the leaf, stem and whole plant. Overall results showed that the methanol extracts
from the leaf samples of the highland and lowland varieties possessed greater
cytotoxicity effect against cancer cell lines. Two active extracts obtained from the
methanol leaf extracts of the highland and lowland varieties were more effective in
suppressing the expression of CaSki and SKOV-3 cells. The dichloromethane extract
from the stem sample of the highland variety also showed significant cytotoxic effect
against HT-29 cells. Since both varieties showed signs of the selectivity for CaSki,
SKOV-3 and HT-29 cells, these findings suggest that P. chinensis var. chinensisshould
be further researched to isolate and identify the active compound(s) from the active
extracts which demonstrated significant cytotoxic activities
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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