1,720,958 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
EVOLUTION OF SOILS ON SANDY FORMATIONS UNDER THE IMPACT OF CHESTNUT ORCHARD RECONVERSION
No full textWithin the framework of a research project entitled "Recovery and Exploitation of Abandoned Chestnut Groves in the Province of Bologna" an experimental station was set up by Pro Sementi S.p.A in the municipality of Granaglione (Bologna), where an abandoned chestnut grove is being reconverted to use as a source of both wood and chestnut fruit. In parallel with the strictly forestry-related activities, a soil monitoring program was started up with the aim of assessing soil evolution and changes in relation to the grove's reconversion. The monitoring was conducted over a two-year period on the same representative soil profiles in the area designated for reconversion to timber production (zone 1) and over a one-year period in the area reconverted to chestnut fruit production (zone 2). The typical soil in this Apennine region developed on a sandy substrate, is generally shallow in depth, and displays dystric characteristics and an acid reaction. Where the slope is greatest (>35%) it appears to have evolved little (zone 1), its thickness being limited by a layer of continuous hard rock (Endoleptic Regosols); in more gently sloping areas (zone 2) the thickness and degree of evolution increase (Dystric Cambisols).
The profiles sampled in zone 1 showed a rapid physical deterioration of the already exiguous epipedon, induced by diffuse laminar erosion and further accentuated by the lack of tree cover, which by the end of the first year led to the nearly complete disappearance of litter and of the surface organic horizon. The chemical parameters that testify most clearly to this deterioration are linked to changes in organic carbon and the base saturation percentage. Over time it was possible to note a gradual and constant loss of total organic carbon (TOC) from the epipedon, with TOC falling from 76 to 70 g/kg after one week of heavy precipitation and to 42 g/kg after one year of clear-cutting; the humification index (HI), which was initially in line with the typical values for woods and meadowland, where humification processes prevail over mineralisation, showed values after one year indicating that the soil was deteriorating toward situations of intense mineralisation. The other humification indexes calculated reveal the same negative trend. Base saturation fell from 86 to 82% after the first week, eventually arriving at a value of 6% after one year of clear-cutting, with lixiviation of alkaline cations and a progressive increase in acidic cations. During the first year of monitoring an increase was also observed in the levels of Fe and Al in soil, with the values of Alox + 1⁄2 Feox (spodicity index) rising from 0.59 to 1.99.
After two years of clear-cutting, the resumption of plant growth and non-clearing of underbrush permitted the formation of a new cover of turf, such as to favour a distinct countertrend both from a physical (reconstitution of the epipedon) and a chemical (accumulation of total organic carbon) standpoint. The humification indexes reveal a more marked trend toward humification processes as opposed to mineralisation.
The conversion of the chestnut grove in the less sloping area did not show such a markedly negative trend from a physiochemical viewpoint
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
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