1,720,954 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
Exploring the Variability of Seismic b-Values Using a Relative Amplitude Method for Earthquake Magnitude Reassessment
No full textProbabilistic seismic hazard assessment (PSHA) is a widely used statistical approach to estimate where and when earthquakes are likely to occur based on the statistics of past seismicity patterns. A critical component of PSHA is the estimation of magnitude recurrence intervals based on the Gutenberg-Richter Law which characterizes the frequency of earthquakes magnitudes and defines the b-value which expresses the relative proportion of small to large events in the magnitude-frequency distribution (MFD). However, the MFD and the b-value are heavily influenced by the accuracy of earthquake magnitude estimates. This research addresses the critical need for high-quality magnitude measurements for small earthquakes by using relative amplitude methods. These improved magnitude estimates are used to examine spatiotemporal variations in b-value for multiple earthquake sequences to improve our understanding of short-term seismic hazard forecasting. Chapters 1 and 2 introduce a generalized methodology to determine relative magnitudes for earthquake sequences which is only dependent on relative amplitude differences between interlinked pairs of waveforms, as well as methods for determining the b-value from the distribution of magnitude differences between successive events. Chapter 3, examines the uncertainty of magnitude results produced from the relative magnitude method through a parameter study on critical variables including thresholds for signal-to-noise ratio and cross-correlation, frequency content filtering, and seismic station selection. We show that signal-to-noise and cross-correlation thresholds limit the number of magnitudes that can be recalculated while bandpass filtering has the largest effect on the variability of magnitude results. Chapter 4, presents a set of coda-envelope moment magnitudes (MW) as a benchmark data set for the relative magnitude method, allowing us to align our relative magnitude measurements to an absolute moment magnitude scale for small earthquakes. We produce moment magnitudes for approximately 80% of the events in the Delaware Basin and demonstrate the capabilities of this method to provide moment magnitude for small earthquakes in regional earthquake catalogs. In Chapter 5, we use an uncalibrated relative magnitude method to reevaluate magnitude estimates for the 2011 Prague, Oklahoma earthquake sequence and calculate the temporal and spatial variations of b-value. We show that b-values during the aftershock sequence are consistently low which demonstrate that the aftershock distribution is skewed towards producing earthquakes of higher magnitude for at least 5 months following the mainshock. Additionally, we show a trend of decreasing b-value along the Meeker-Prague fault as distance from the mainshock increases suggesting that tectonic stress may still exist in areas of low b-value. Finally, in Chapter 6, we apply the relative magnitude method to 6 foreshock sequences in southern California and focus on an in-depth exploration of the spatial and temporal variations in b-value and their sensitivity to parameters such as spatial binning and window length. We show that approximately half of the sequences exhibit a drop in b-value in the months or days prior to a mainshock. We also show that mainshocks frequently occur in areas of low foreshock b-value for single-fault or dense seismicity. This research demonstrates the importance of reliable and transportable magnitude estimation for small earthquakes. With these improved magnitude estimates, we also gain valuable insights into the behavior of seismic sequences through analysis of the spatiotemporal variability of the MFD and b-value.PhDEarth and Environmental SciencesUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/199110/1/gablesyd_1.pd
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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