1,720,964 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
Plantios de Hymenaea courbaril L. em área alterada na região de Manaus: influência dos fatores de sítios do solo nos estoques de biomassa, nutrientes e na fotossíntese
Full text linkThis research describes the influence of three fertilization types on a degraded area with Hymenaea courbaril plantation, a multiple purposes neotropical tree species. Changes in soil characteristics, tree aerial biomass and nutrient stocks, as well, ecophysiological parameters were investigated. The objectives of Chapter I were to determine morphological, physical and chemical soil characteristics (a very clayey, oligotrophic, Latossolo Amarelo / Oxissol) and the biomass of three plantations. Two plantations established in April 2001, had spacing 3 x 2 m, one received no fertilization (treatment SA) and the second received green manure (treatment AO). The third plantation (April 2002) with spacing 5 x 2 m received chemical fertilization (treatment AQ) in each planting hole (AQ; 150 g Fosmag®; NPK 15:5:10, + B e S). The fertilization was made at planting time and repeated the next four years with the same amount of fertilizer close to the trees. Green manure (AO) altered significantly soil chemical properties. In the superficial soil layers, the macro- and micronutrient content was higher than with chemical fertilization e.g. N: 2,48 g kg-1 (AO); 1,77 g kg-1 (AQ) and 1,36 g kg-1 (SA). In deeper layers (50 cm) of the soil profile the AO increased pH values (H2O e KCl) as carbon was reduced. H. courbaril trees were taller and biomass was twenty times greater with AO (273 Mg ha-1) than with SA (13 Mg ha-1) and AQ (34 Mg ha-1). In all treatments higher biomass was observed in trunks and fine branches (Ø 10 cm). Chapter II objectives were to determine in H. courbaril the nutrients stocks in the tree compartments (leaves, fine branches, coarse branches and trunks) and investigate photosynthetic variables. All nutrient stocks were higher in trees with green fertilization e.g. P: 46,55 g/tree (AO) 13,97 g/tree (AQ) e 4,24 g/tree (SA). The thin branches (Ø < 10 cm), in trees of all treatments, were the compartment with the highest nutrient stocks. The trunk compartment had always less than 50 % of nutrient stock per tree. The green manure resulted in significant higher maximum photosynthesis (Amax) of H. courbaril (14,28 μmol CO2 m-2 s-1) compared to AQ (11,35 μmol CO2 m-2 s-1) and SA (9,58 μmol CO2 m-2 s-1). PSII photochemistry efficiency was also improved: Fv/Fm = 0,73 (AO) 0,69 (AQ) and 0,33 (SA). The H. courbaril plantation under influence of green fertilization was the most efficient to accumulate nutrients in the soil, as well as, higher biomass and nutrient stocks in the aerial compartments and a higher photosynthetic performance. In comparison to chemical fertilization, green manure had a higher impact on improved soil characteristics of degraded areas and biomass production of H. courbaril, probably because of the beneficial influence of C capture by photosynthesis and increase in photochemistry efficiency of PSII.Este trabalho descreve a influência de tipos de adubação em uma área degradada e reflorestada com Hymenaea courbaril L. (jatobá), uma espécie florestal de múltiplo uso. No Capítulo I os objetivos foram determinar as características morfológicas, físico-químicas do solo e a biomassa nos plantios de H. courbaril. Os plantios foram realizados nos mês de abril nos anos de 2001 e 2002. O primeiro, no espaçamento de 3 x 2 m, sendo uma parte sem qualquer adubação, tratamento (SA). O segundo, também no espaçamento de 3 x 2 m, numa outra parte com um histórico de adubação orgânica, tratamento (AO). O terceiro plantio (2002), no espaçamento de 5 x 2 m, teve adubação química (AQ) com 150 g/cova de Fosmag® (NPK 15:5:10, +B e S) durante o plantio e nos quatro anos seguintes, com a mesma dosagem. O solo na área do experimento é um Latossolo Amarelo, oligotrófico, muito argiloso. A eficiência da adubação orgânica (AO) sobre as características químicas do solo degradado foi notável. Os teores de macro e micronutrientes nas camadas superficiais do solo desse tratamento sempre foram maiores do que nos outros dois tratamentos (p. ex. N: 2,48 g kg-1 AO; 1,77 g kg-1 AQ e 1,36 g kg-1 SA). A influência da AO foi observada até horizontes mais profundos do perfil de solo (50 cm). Os valores de pH, tanto em H2O quando em KCl, foram maiores quando os valores de carbono eram menores, sempre em horizontes mais profundos. O estoque de biomassa foi cerca de 20 vezes maior nos indivíduos de H. courbaril no tratamento AO (273 Mg ha-1) do que no SA (13 Mg ha-1). Esse estoque sempre foi maior nos compartimentos troncos e galhos finos, nos três tratamentos. No Capítulo II os objetivos foram determinar os estoques de nutrientes nos compartimentos das árvores e investigar as variáveis ecofisiológicas nos plantios de H. courbaril em área degradada sobre processo de restauração com a influência de três históricos de adubação. Os indivíduos de H. courbaril analisados foram os mesmos do Capítulo I.
Os estoques de nutrientes foram nitidamente maiores nos indivíduos do plantio com adubação orgânica para todos os nutrientes p. ex P: 46,55 g/arv AO; 13,97 g/arv AQ e 4,24 g/arv SA. O compartimento tronco estocou grande parte dos nutrientes, mas sempre menor que 50 % do estocado total em média por árvore. O compartimento que mais estocou nutrientes nos três plantios foi Galhos Finos (Ø < 10 cm). Os maiores valores de Amáx também foram encontrados nas árvores dos plantios do tratamento AO (14,28 μmol CO2 m-2 s-1 AO; 11,35 AQ e 9,58 SA). Também para o tratamento AO, foram encontrados os maiores valores de eficiência fotoquímica do PSII (0,73 AO; 0,69 AQ e 0,33 SA). Os plantios com a espécie H. courbaril sobre influência de adubação orgânica se mostraram eficientes para acúmulo de nutrientes no solo, biomassa, nutrientes nos compartimentos arbóreos e maior desempenho fotossintético
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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