1,720,953 research outputs found
Análise dos resultados técnicos de um efetivo Aberdeen-Angus em condições portuguesas de montanha
No full textDissertação apresentada à Escola Superior Agrária do Instituto Politécnico de Castelo Branco para cumprimento dos requisitos necessários à obtenção do grau de Mestre em Engenharia Zootécnica.Aberdeen-Angus é uma raça bovina que reúne características de rusticidade, produção elevada e de qualidade da carne particular, que permitem uma elevada rentabilidade.
Foram analisados registos zootécnicos de um total de 72 animais (de países de origem diferentes) de uma exploração bovina da raça Aberdeen-Angus em regime extensivo, em condições portuguesas de montanha entre os anos de 2010 e 2016, com o objetivo de determinar índices de produtividade da exploração e identificar limitações de eficiência reprodutiva e produtiva. Realizaram-se ainda, estimativas dos parâmetros genéticos e do valor genético individual (EBV) através do modelo animal
(com estimativas BLUP) para os seguintes critérios: intervalo entre parto (IP); peso ao nascimento (PN); peso aos 90 (P90), 200 (P200) e 400 dias (P400) de idade.
Os resultados reprodutivos do presente estudo sugerem que em determinados aspetos, principalmente no maneio reprodutivo, apesar da tecnologia utilizada ser a mais recomendada, os fundamentos básicos como a nutrição e a condição corporal do animal foram determinantes para que os resultados ficassem aquém do esperado.
Apesar da maioria dos indicadores nos dizerem que o maneio reprodutivo não é eficaz, podemos concluir que esta raça responde bem em termos reprodutivos sendo que 64,9% das fêmeas do efetivo ficaram gestantes com uma única inseminação e apenas 5,4% necessitaram de quatro ou mais inseminações artificiais para ficarem gestantes.
As fêmeas do efetivo com melhor EBV no intervalo entre parto foram as de origem portuguesa; no peso ao nascimento foram as de origem no Reino Unido e no peso aos 400 dias destacou-se a Irlanda. A resposta observada, à seleção praticada, apresentou variabilidade marcada ao longo dos anos; para o IP, o PN, o P90 e o P400, não se observou nenhuma tendência aparente de alteração dos valores médios, enquanto para o P200, considerando os animais nascidos desde 2004/05, parece haver uma tendência para aumentar.
Os resultados, no geral, são limitados pelo reduzido número de registos e realça-se a necessidade de continuação deste trabalho.Aberdeen-Angus is a bovine breed that unites characteristics of rusticity, high production and particular meat quality, that allow a high profitability.
Zootechnical data were analyzed of a total of 72 animals (with different countries of origin) from an extensive Aberdeen-Angus breed under Portuguese mountain conditions between 2010 and 2016, in order to determine the productivity indexes of the farm and to identify limitations of reproductive and productive efficiency.
Estimates of genetic parameters and individual genetic value (EBV) were also performed using the animal model (with BLUP estimates) for the following criteria: interval between parturition (IP); birth weight (PN); weight at 90 (P90), 200 (P200) and 400 days (P400) of age.
The reproductive results of the present study suggest that in certain aspects, mainly in reproductive management, although the technology used is the most recommended, the basic fundamentals such as animal's nutrition and body condition were determinant for the results to be worse than expected. Although most of the indicators tell us that reproductive management is not effective, we can conclude that this breed responds well in reproductive terms, with 64.9% of the females in the herd being pregnant with a single insemination and only 5.4% requiring four or more artificial inseminations to become pregnant.
The females of the herd with the best EBV in the interval between parturition were the ones of Portuguese origin; as far as the birthweight is concerned, were those of the United Kingdom and the weight at 400 days Ireland stood out. The observed response to the practiced selection, showed marked variability over the years; for IP, PN, P90 and P400, there was no apparent trend of change in mean values, whereas for P200, considering animals born since 2004/05, there appears to be a tendency to increase.
The results, in general, are limited due to the small number of data, therefore the need to continue this work is a must
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
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