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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
Monitoring of drugs in surface water and effluent from a sewage treatment plant in the municipality of Dracena - SP
No full textA qualidade da água é um assunto de crescente preocupação, especialmente devido à presença de fármacos que contaminam o ambiente aquático. Muitos compostos têm sido detectados em efluentes de estações de tratamento de esgoto (ETEs) e águas superficiais em todo o mundo. A ocorrência de fármacos no ambiente pode apresentar efeitos adversos aos ecossistemas aquáticos. O objetivo desse estudo foi avaliar a presença e a concentração dos fármacos diclofenaco, ibuprofeno e naproxeno durante março de 2017 a fevereiro de 2018 em 7 pontos de amostragem, sendo 5 pontos no Córrego das Marrecas - SP e 2 pontos na ETE do município de Dracena - SP. Em cada ponto do córrego foi mensurada a concentração de oxigênio dissolvido (OD), pH, temperatura e sólidos totais dissolvidos (SDT) com auxílio de uma Sonda Multiparamétrica Aquaread AP 2000. Para a identificação dos fármacos, as amostras foram preparadas por microextração líquido – líquido dispersiva e analisadas por cromatografia líquida de alta eficiência. Foi realizada uma análise descritiva para avaliação dos resultados de média, desvio padrão e coeficiente de variação dos parâmetros físico-químicos. Uma matriz de correlação foi aplicada para avaliar a interação entre os parâmetros físico-químicos da água e os fármacos dois a dois. Os três fármacos foram detectados em todos os pontos da ETE e do córrego. A maior concentração do diclofenaco (0,458 mg.L-1) foi registrada no ponto de lançamento do efluente da ETE no mês de março. Nesse ponto foi verificada a maior concentração de ibuprofeno (0,120 mg.L-1), porém no mês de maio. O naproxeno apresentou a maior concentração (0,040 mg.L-1) no mês de abril na nascente do Córrego das Marrecas e a jusante da ETE. Os parâmetros que apresentaram uma correlação significativa foram: ibuprofeno x temperatura, quanto maior a temperatura, menor a concentração de ibuprofeno. Oxigênio dissolvido x sólidos totais dissolvidos, quanto maior os STD, menor a concentração de OD. Oxigênio dissolvido x temperatura, quanto maior a temperatura menor o OD. Mudanças e melhorias devem ser realizadas para que a remoção desses compostos seja total, amenizando a transferência dessas substâncias para os ambientes aquáticos e diminuindo seus riscos para a saúde humana e para o meio ambiente.Water quality is a subject of increasing concern, especially due to the presence of drugs that contaminate the aquatic environment. Many compounds have been detected in effluents from sewage treatment plants (ETEs) and surface water worldwide. The occurrence of drugs in the environment may have adverse effects on aquatic ecosystems. The objective of this study was to evaluate the presence and concentration of the drugs diclofenac, ibuprofen and naproxen during March 2017 to February 2018 in 7 sampling points, 5 points in the Stream of Marrecas - SP and 2 points in the TTE of the municipality of Dracena - SP The concentrations of dissolved oxygen (DO), pH, temperature and total dissolved solids (TDS) were measured at each point of the stream using an Aquaread AP 2000 Multiparameter Probe. For drug identification, the samples were prepared by dispersive liquid-liquid microextraction and analyzed by chromatography high efficiency liquid. A descriptive analysis was performed to evaluate the results of mean, standard deviation and coefficient of variation of physical-chemical parameters. A correlation matrix was applied to evaluate the interaction between the physicochemical parameters of water and drugs two to two. All three drugs were detected at all points of the TEE and the stream. The highest concentration of diclofenac (0.458 mg.L-1) was recorded at the point of launch of the ETE effluent in March. At that point, the highest concentration of ibuprofen (0.120 mg.L-1) was observed, but in May. The naproxen had the highest concentration (0.040 mg.L-1) in April at the source of the Stream of Marrecas and downstream of the TEE. In the TEE it was observed that a greater reduction of diclofenac occurred (97.7% in March), followed by ibuprofen (91.7%) and naproxen (43.5%) both in April. The parameters that presented a significant correlation were: ibuprofen x temperature, the higher the temperature, the lower the concentration of ibuprofen. Dissolved oxygen x total dissolved solids, the higher the STD, the lower the OD concentration. Dissolved oxygen x temperature, the higher the temperature the lower the OD. Changes and improvements should be made to the removal of these compounds, minimizing the transfer of these substances to aquatic environments and reducing their risks to human health and the environment.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq
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
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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