1,720,953 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
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
Destino de agrot?xicos atrav?s do ciclo hidrol?gico na sub-bacia do Arroio Encantado
Full text linkThe water cycle controls the transport and fate of pesticides in the environment. When it reaches any water body, the fate of the pesticide come about according to the physical characteristics of the water body, physico-chemical properties of the compound itself and climate conditions. The adverse effects of pesticides on the environment tend to be more pronounced in agricultural river basins. This study sought to evaluate the presence of pesticides in surface and underground waters of the Arroio Encantado sub-basin, a small hydrographic basin of predominantly agricultural use, to understand the patterns of movement of pesticides in the environment and their interactions with the water cycle, in addition to assess the ecological risk to exposed biota. To this end, 24 pesticides were analyzed using liquid chromatography?mass spectrometry (LC-MS) in 14 groundwater and 11 surface water samples in summer and winter. The main ions usually present in natural waters were also analyzed, to use the hydrogeochemical methods of Piper and Stiff plots and the statistical method of hierarchical clustering analysis, in order to
characterize different flow systems. These data were evaluated together with land use, climate and hydrogeology of the study area and with the physico-chemical properties of each compound analyzed. Of the 24 pesticides analyzed, 22 were detected in at least one sampling point, exposing the biota to low to very high ecological risk in at least some points in surface waters. In periods of low rainfall, physico-chemical properties of pesticides were important in determining their fate in the environment whereas in rainier periods land use becomes more important. Two
flow systems were identified in the study area, one composed of surface and groundwater, with relatively low residence times and dependent on rainwater recharge. The other flow system is exclusively of groundwater, with longer residence times, less dependent on rainwater recharge and consequently less connected with the surface. The second flow system has significantly fewer pesticide detections, proving to be more protected from surface contamination.O ciclo hidrol?gico condiciona o transporte e o destino dos agrot?xicos no meio ambiente. Ao atingir algum corpo h?drico, o destino do agrot?xico se d? de acordo com as caracter?sticas f?sicas do corpo h?drico, caracter?sticas f?sico-qu?micas do composto e condi??es clim?ticas. Os efeitos adversos dos agrot?xicos no meio ambiente tendem a ser mais pronunciados em bacias hidrogr?ficas agr?colas. Este estudo buscou avaliar a presen?a de agrot?xicos em ?guas superficiais e subterr?neas da sub-bacia do Arroio Encantado, bacia de uso predominantemente agr?cola, e tamb?m procurou entender os padr?es de movimenta??o dos agrot?xicos no meio ambiente e como se d?o as suas intera??es com o ciclo hidrol?gico, al?m de avaliar o risco ecol?gico ? biota exposta. Para tanto, foram analisados 24 agrot?xicos utilizando a cromatografia l?quida acoplada a espectrometria de massas (LC-MS) em 14 amostras de ?guas subterr?neas e 11 superficiais no ver?o e no inverno. Tamb?m foram analisados os principais ?ons normalmente presentes nas ?guas naturais, para aplica??o dos m?todos hidrogeoqu?micos dos diagramas de Piper e de Stiff e do m?todo estat?stico da an?lise hier?rquica de agrupamentos, a fim de caracterizar diferentes sistemas de fluxo. Estes dados foram avaliados em conjunto com o uso do solo, clima e hidrogeologia da ?rea de estudo e com as propriedades f?sico-qu?micas de cada composto analisado. Dos 24 agrot?xicos analisados, 22 foram detectados em pelo menos um ponto de amostragem, expondo a biota a um risco ecol?gico baixo a muito alto em pelo menos alguns pontos das ?guas superficiais. Em per?odos pouco chuvosos, propriedades f?sico-qu?micas dos agrot?xicos foram importantes para determinar o seu destino no meio ambiente. Em per?odos mais chuvosos, o uso do solo passa a ser mais importante. Foram identificados dois sistemas de fluxo na ?rea de estudo, um composto por ?guas superficiais e subterr?neas, com tempo de resid?ncia relativamente baixo e dependentes das ?guas pluviais. O outro sistema de fluxo ? exclusivamente subterr?neo, com tempo de resid?ncia maior, menos dependente das ?guas pluviais e consequentemente menos conectado com a superf?cie. O segundo sistema de fluxo tem significativamente menos detec??es de agrot?xicos, demonstrando ser mais protegido de contamina??es oriundas da superf?cie
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