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
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
Experimental Study of Concrete Mixes with Nano-Silica and Silica Fume
No full textPh.D Thesis_Anil Kumar NandaDuring the manufacturing of cement, when limestone and clay are crushed and heated at high temperature, there is emission of global warming gasses including carbon dioxide (CO2) into the atmosphere. As the current atmospheric concentration of CO2 has reached an alarming high value to the tune of 410 ppm (April, 2017), it has become obligatory to develop ‘Green concretes’ in order to decrease the CO2 emission from cement industry. The aim of the study undertaken herein is to highlight the utilization of nano silica in high performance concrete in order to reduce the environmental pollution and to also see if the strength as well as the durability properties of the concrete can be altered positively.
In the experimental work undertaken, cement was partially replaced by nano silica at 2%, 3% & 4% replacement levels and replacement level of silica fume was kept constant at 8% for four different water binder ratios (w/b) of 0.30, 0.34, 0.38 and 0.42. The concrete samples were casted and tested for strength (compressive and split tensile) and durability properties (abrasion resistance and rapid chloride ion penetration resistance) after 7, 28 and 56 days of curing ages. Scanning Electron Microscopy, X-Ray diffraction and Energy Dispersive Spectroscopy tests were also conducted to analyze changes in the concrete microstructure. The results were statistically analyzed as well.
The test results after 56 days curing period show 34.54 % and 36.52 % increase in compressive and split tensile strength for w/b ratios 0.38 and 0.30, respectively whereas a 56.31% reduction in average loss of thickness and 38% increase in resistance of chloride ions penetration was observed for w/b ratio of 0.30. Although, the experimental results also show that the maximum increase in compressive and split tensile strength, maximum reduction in abrasion and maximum decrease in rapid chloride ion penetration value were found at 0.30 w/b ratios at the replacement level of 4% of nano silica and 8% silica fume for 56 days of curing. It is also observed that average loss of thickness decreases with the increase in compressive strength of concrete. The percentage decrease in average loss of thickness was doubled or near to double with the percentage increase in compressive strength of concrete after 28 days of curing. The Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS) test results showing the level of Ca (OH)2 in plain concrete and consumption level of Ca (OH)2 along with level of CSH in concrete containing nano silica & silica fume have also been presented. The relation between compressive strength and other properties i.e. split tensile strength, abrasion resistance and rapid chloride penetration of high-performance concrete has been developed and the results are found significant. The verification of actual compressive and rebound hammer compressive strength has been done by determining the percentage of difference between these two and found the result well within specified limit. The correlation among split tensile and compressive strength ratios has been developed to calculate the Integral Absolute Error (IAE) and it has been found that the maximum values are within specified limit. The comparison of relationship of compressive and split tensile strength of the current study with the study of other three authors has been done and found the result well within line of the study of Oluokun et al. (1991).
The reliability analysis has been done by considering the results of compressive strength of concrete in terms of mean, standard deviation and with-in-test coefficient of variation corresponding to the variation in the designated parameters which have already been generated. The compressive strength data generated experimentally has been analyzed using normal-probability distribution and partial safety factors of composite concretes have been evaluated. The experimental results show that the properties of concrete having nano silica and silica fume in combination were better than that of a plain concrete. The with-in-test coefficient of variation (WCV) being less than the acceptance value of 3.0 percent (ACI-214-77) indicates that the testing condition is uniform and under very good control. It is known that the compressive strength that is to be advised at site can be done so with greater degree of confidence if the partial safety is on lower side. There is little variation in the PSF values, for mixes with and without nano-silica and silica fume, for reliability indices of 1, 1.3 and 2.0, whereas the change is significant for β = 3.0, indicating that to achieve higher reliability at site, a strict control on water-binder ratio plays a significant role in strength development of concrete. For concrete mixes having 2% nano-silica, for a reliability index of β = 3.0, the lowest values of partial safety factors are achieved for w/b ratios of 0.38 at all ages, indicating that higher quality control is required while replicating mixes, specifically at the w/b ratio of 0.38. For all other reliability indices at all the w/b ratios the variation in the partial safety factor values is almost negligible.
It can be concluded that for mixes where early age strength is the criteria, the optimum replacement percentage of cement by nano-silica is 2 to 3%, whereas, for concrete mixes cured for normal or higher ages, it is easy to replicate mixes, containing 3 to 4% nano-silica, at the site. The partial safety factor decreases with the decrease in with-in-test coefficient of variation leading to the conclusion that a better-quality control of the concrete mixes would lead to optimal design of reinforcement for mixes containing optimal dosages of nano-silica and silica fume. The replacement of cement with nano-silica and silica fume leads to lower values of WCV and partial safety factor (PSF) indicating that it is advisable to use these supplementary cementitious materials for producing efficient RCC designs.
The results confirmed that the joint use of nano silica and silica fume has better impact on strength and durability properties than conventional concrete. The results show that the use of nano silica and silica fume as replacement of cement not only makes the concrete more durable but also reduces the emission of CO2 during the production of cement. It also solves the waste disposal problem along with saving of the natural resources
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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