1,720,953 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
Seasonal Habitat Use, Capture Efficiency, Population Dynamics, and Physiology of Mudpuppies (Necturus maculosus) in an Urban Lake
No full textFreshwater habitats are among the most vulnerable environments on earth, with extinction rates higher than both terrestrial and marine habitats. Common mudpuppies (Necturus maculosus) are fully aquatic North American salamanders that have experienced population declines. Despite their large size and wide geographic distribution, much of their basic natural history and ecology is understudied. Utilizing modified minnow traps, I set 3988 traps baited with fathead minnows over 58 total trapping nights in Wolf Lake, Chicago, Illinois. I captured 129 individuals using traps and observed a significant decline in capture success above 14oC (0.003 mudpuppies/trap/night above 14oC and 0.05 mudpuppies/trap/night below 14oC) with a maximum temperature of capture of 20.5oC. In addition, during ice-free periods, I collected 72 mudpuppies by rock flipping during 31 rock flipping events and 140 person hours. Comparable to our trapping data, I found a significant decline in captures above 14oC (0.34 mudpuppies/person/hour above 14oC and 1.28 mudpuppies/person/hour below 14oC) with a maximum temperature of capture of 28.9oC. There was a significant difference in total length of mudpuppies caught in traps (mean TL= 24.1±0.8cm) and rock flipping (mean TL= 15.6±0.5cm). This finding indicates the need for multiple capture methods to describe population dynamics and presence of recruitment. I found that larger individuals were found rock flipping at a greater water depth (R=0.39, p=0.0016) but not necessarily a greater distance from shore (R=0.28, p=0.025), which is indicative of the anthropogenically disturbed habitat at Wolf Lake. I used non-lethal gastric lavage method to acquire and compare stomach contents across size classes. I used Non-metric multidimensional scaling (NMDS) to visually compare diet differences and Analysis of Similarities (ANOSIM) to determine diet similarities for abundance and volume of prey items. Size classes were divided by total length into: small (0-10cm), medium (10.5-20cm), and large (\u3e20.5cm). For abundance, 51% of the similarity was driven by amphipods and insects between small and medium mudpuppies, 59% was driven by amphipods and fish between small and large mudpuppies, and 59% was driven by fish and insect between medium and large mudpuppies. For volume, 57% of the similarity was driven by fish and crayfish between small and medium mudpuppies, 86% was driven by fish between small and large mudpuppies, and 56% was driven by fish between medium and large mudpuppies. Abundance and volume were driven by total length (p=0.001) with prey items all significantly different for abundance, and all prey items except isopods significantly different for volume. I also found amphibians in stomach contents with frogs (n=4) and a cannibalistic event were a 25.5cm individual consumed a 14cm individual. My findings suggest that mudpuppies are gape-limited, opportunistic feeders that consume a variety of prey items regardless of size. We implanted radio transmitters in twenty sub-adult to adult mudpuppies in March, 2017 and in seven sub-adult to adult mudpuppies in December, 2017 to analyze seasonal movement. Individuals were located every 16.3±0.3 days and median distance moved between tracking events was 3.7m. Further, 97% of all movements were less than 10m and all movements \u3e10m occurred between October-May (with the exception of two events). There was no significant difference between male and female movements (p=0.26) and sedentary behavior was observed following large movements. My findings were similar to movements observed in terrestrial salamanders where individuals remain in familiar territory or within home ranges (Stebbins and Cohen 1995). The largest movements were seasonal and near-shore habitats were utilized (greatest depth 4.3m). I used hormone analysis and acute metabolic response due to temperature to analyze what is driving seasonal movements. Female hormone concentration (estradiol) did not vary across seasons (spring, summer, and winter) and males were only caught in the spring. This may be due to nest guarding behavior in females and males vacating the breeding grounds after breeding. Mass-specific oxygen consumption (mgO2/kg/hour) was highly variable with a 10.3% increase from 12.7oC to 24.3oC, a 31.9% increase from 12.7oC to 15oC, and a 16.4% decrease from 15oC to 24.3oC. I calculated a Q10 temperature coefficient of 1.4 across my study temperatures. This pattern shows limited response to acute temperature changes and can be explained by the wide latitudinal distribution of mudpuppies and the large seasonal difference in water temperature at Wolf Lake (~3oC-30oC). My study conveys the importance of extensive sampling periods for mudpuppies to accurately predict their population status due to seasonal activity patterns, difficulty of capture, and overall cryptic appearance and behavior. My findings show the need for near-shore habitat protection in conservation efforts for mudpuppy prey habitat and breeding locations
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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