1,720,965 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
Exploring recessive resistance to the powdery mildew disease
Full text linkThe powdery mildew disease, caused by obligate biotrophic fungi belonging to the Ascomycete order of Erysiphales, is common among higher plants and represents one of the most important threats for the cultivation of many crop species. Although powdery mildew resistance is usually a dominant trait, recessively inherited resistance has been reported to occur in Arabidopsis, barley, tomato and pea. In <strong>Chapter 1</strong> of this thesis, we provide a state of the art on the understanding of mechanisms underlying plant immunity and review monogenic dominant and recessive sources used in breeding in order to develop resistant cultivars. In <strong>Chapter 2 and 3,</strong> we describe a successful homology-based cloning approach for the isolation of the recessive ol-2 gene, naturally occurring in a tomato accession collected in Ecuador and conferring broad-spectrum resistance to the powdery mildew fungus Oidium neolycopersici. We realized that ol-2 resistance shares striking similarities with well-known barley and Arabidopsis mlo powdery mildew resistance, originating from loss-of-function mutations of genes encoding for specific seven transmembrane domains MLO isoforms. The following chain of evidence was provided demonstrating that ol-2 resistance is due to the loss of the tomato MLO homolog SlMLO1: a) Ol-2 and SlMLO1 loci share the same genetic and cytogenetic position; b) resistant ol-2/ol-2 lines are homozygous for a loss-of-function deletion in the sequence of SlMLO1; c) a molecular marker developed on the mutation site co-segregates with resistant individuals in an F<sub>2</sub>population; d) SlMLO1 transgenic expression in ol-2/ol-2 individuals results in disease susceptibility; e) SlMLO1 virus-induced silencing in Ol-2/Ol-2 individuals is associated to increased powdery mildew resistance. In <strong>Chapter 4</strong>, we first illustrate a chemical mutagenesis program allowing the identification of a pea line showing recessive resistance towards the powdery mildew fungus Erysiphe pisi. Histological and genetic analyses revealed that the mutated gene is allelic to er1, commonly used in pea breeding for the development of resistant cultivars. As defense mechanisms associated to er1 resistance are reminiscent of mlo immunity, we sequenced the pea MLO homolog PsMLO1 and found a loss-of-function point mutation characterizing the resistant line. A polymorphic CAPS marker was developed on the mutation site and found to be fully co-segregating with resistance in a large F<sub>2</sub>population. Finally, PsMLO1 sequencing in three er1 resistant cultivars also resulted in the identification of aberrant alleles, further substantiating the identification of another case of mlo-based immunity. In <strong>Chapter 5</strong>, we report the identification (in vitro and in silico) of a series of MLO homolog sequences in five cultivated Solanaceae species affected by the powdery mildew disease. Comparative analyses using a dataset of several dicot MLO proteins allowed the identification of candidate isoforms for disease susceptibility and the detection of cluster-specific transmembrane amino acid motifs. In <strong>Chapter 6</strong>, we look at disease resistance as a condition due to the lack of susceptibility genes like MLO. We review several susceptibility genes isolated in crop species and in Arabidopsis, with respect to their molecular characterization, their role in plant-pathogen interactions and the resistant phenotype deriving from their loss-of-function mutations/silencing. A breeding strategy based on the lack of plant susceptibility genes is discussed.  
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
- …
