1,720,966 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
Prevalência e fatores de risco associados a infecção por Neospora caninum e Trypanosoma vivax em bovinos leiteiros e ocorrência de N. caninum e parasitos gastrointestinais em cães de propriedades rurais do Oeste do Paraná, Brasil
Get PDFOrientador : Profª. Drª. Silvia Cristina OsakiDissertação (mestrado) - Universidade Federal do Paraná, Setor de Palotina, Programa de Pós-Graduação em Ciência Animal. Defesa: Palotina, 17/02/2017Inclui referências : f. 39-48;68-72;80-82;95-98;101-115Resumo: Parasitos são seres que se beneficiam de um hospedeiro para sobreviver, podendo causar danos à saúde do animal. Em bovinos, os parasitos que acometem o sistema reprodutor possuem grande importância, principalmente pelos prejuízos econômicos que geram. O objetivo desse trabalho foi pesquisar a prevalência de Neospora caninum e Trypanosoma vivax em bovinos; N. caninum e parasitos grastrintestinais em cães; N. caninum em fetos bovinos, além de determinar os principais fatores de risco associados com os patógenos pesquisados em propriedades rurais de bovinocultura de leite da região Oeste do Paraná. Após a realização do cálculo de amostragem foram coletadas 600 amostras de sangue e 17 fetos bovinos, 163 amostras de sangue e 120 amostras de fezes de cães de propriedades rurais das cidades de Cascavel, Toledo, Marechal Cândido Rondon e Palotina, e aplicado um questionário epidemiológico. Para a detecção de anticorpos anti-Neospora caninum em cães e bovinos foi realizada a Reação de Imunofluorescência Indireta (RIFI). Para o diagnóstico de T. vivax em bovinos foi realizada a RIFI e esfregaço sanguíneo da capa leucocitária. Os Métodos de Willis-Mollay, Hoffman, Pons e Janer e Sheather foram utilizados para a detecção de ovos e/ou oo (cistos) de parasitos em amostras de fezes dos cães. Amostras do cérebro, coração e placenta dos fetos bovinos foram submetidas à técnica de Reação em Cadeia da Polimerase (PCR) para o diagnóstico de Neospora caninum. Os resultados e os dados coletados a partir do questionário epidemiológico foram analisados através do programa EpiInfo. Das amostras de bovinos, 23,67% foram positivas para N. caninum e todas apresentaram resultado negativo para T. vivax. Em nove (52,94%) fetos foi possível amplificar material genético do N. caninum. As principais variáveis associadas com a infecção foram histórico de aborto, baixa produção de leite, criação extensiva e raça Jersey. Das 163 amostras de sangue de cães, 11,66% foram positivas para o N.caninum, não havendo correlação significativa entre os resultados da sorologia dos cães e dos bovinos. Das amostras fecais, 71,67% foram positivas para ao menos um parasito. Os mais encontrados foram Ancylostoma spp. (80,23%), Trichuris vulpis (20,93%), Cystoisospora spp. (17,44%) e Giardia spp. (8,14%). Também foram encontrados Sarcocystis spp., Toxocara spp., Hymenolepis diminuta e Capillaria spp. em um percentual menor. Pseudoparasitos como oocistos da família Adeleidae e Eimeria spp., e ovos da família Ascaridiidae também foram encontrados. De acordo com o gênero/espécie de parasito, associação foi verificada entre fezes pastosas e parasitismo por Cystoisospora spp. e Sarcocystis spp., histórico de verminose e Trichuris vulpis, e condições de vida, ou seja, se vivem soltos ou presos, para e Ancylostoma spp., Cystoisospora spp., Giardia spp. e Trichuris vulpis. Palavras-chave: aborto, coproparasitológico, enteroparasitos, PCR, RIFIAbstract: Parasites are beings that benefit from a host to survive, and can cause harm to the health of the animal. In cattle, the parasites that affect the reproductive system are of great importance, mainly for the economic damages that they cause. The objective of this study was to investigate the prevalence of Neospora caninum and Trypanosoma vivax in cattle; N. caninum and gastrointestinal parasites in dogs; N. caninum in bovine fetuses, in addition to the main risk factors associated with the pathogens researched in rural dairy cattle in the western region of Paraná. After the sampling calculation was performed, 600 blood samples and 17 bovine fetuses, 163 blood samples and 120 faecal samples of rural dogs were collected from the cities of Cascavel, Toledo, Marechal Cândido Rondon and Palotina, and also an epidemiological questionnaire was applied. For the detection of anti-Neospora caninum antibodies in dogs and cattle, an Indirect Immunofluorescence Reaction (IFAT) was performed. For the diagnosis of T. vivax in cattle, an IFAT and blood smear of the leukocyte layer was performed. The methods of Willis-Mollay, Hoffman, Pons and Janer and Sheather were used to detect eggs and/or oo(cysts) of parasites in samples of feces from dogs. Brain, heart and placenta samples from bovine fetuses were submitted to the Polymerase Chain Reaction (PCR) technique for the diagnosis of Neospora caninum. The results and data collected from the epidemiological questionnaire were analyzed through the EpiInfo program. Of the bovine samples, 23.67% were positive for N. caninum and all showed negative results for T. vivax. In nine (52.94%) fetuses it was possible to amplify genetic material of N. caninum. The main variables associated with the infection were abortion history, low milk yield, extensive breeding and Jersey breed. Of the 163 dog blood samples, 11.66% were positive for N. caninum, with no significant correlation between the serology results of dogs and cattle. Of the fecal samples, 71.67% were positive for at least one parasite. The most sought after were Ancylostoma spp. (80.23%), Trichuris vulpis (20.93%), Cystoisospora spp. (17.44%) and Giardia spp. (8.14%). Sarcocystis spp., Toxocara spp., Hymenolepis diminuta and Capillaria spp. were also found In a lower percentage. Pseudoparasites such as oocysts of the family Adeleidae and Eimeria spp., and eggs of the Ascaridiidae family were found too. According to the genus/species of parasite, the association was verified between pasty faeces and parasitism by Cystoisospora spp. and Sarcocystis spp., history of verminosis and Trichuris vulpis, and living conditions, that is, if they live loose or trapped, for Ancylostoma spp., Cystoisospora spp., Giardia spp. and Trichuris vulpis. Key words: abortion, coproparasitological, enteroparasites, IFAT, PC
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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