1,720,969 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
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
CHROMOSOME-LEVEL DE NOVO GENOME ASSEMBLIES OF AVIAN SPECIES AND THEIR RELEVANCE FOR COMPARATIVE GENOMICS, PANGENOMICS, POPULATION GENOMICS AND SPECIES CONSERVATION.
No full textLife on Earth is currently experiencing the sixth mass extinction. A major loss of species is being caused by anthropogenic habitat destruction, illegal wildlife trade, overfishing, massive fossil fuel consumption and the consequent climate changes, leading to a progressive collapse of biodiversity. The establishment of conservation initiatives is now more crucial than ever and the genetic management of threatened species is currently gaining critical significance. Previous genetic studies have been limited by the lack of complete reference genomes, thus having to focus on a limited number of genes or incomplete genomic sequencing data. In several cases, this led to wrong or incomplete assumptions and to conservation decisions which did not carry the desired effects due to incorrect evaluations. The availability of high-throughput sequencing technologies and the development of advanced computational methods have recently allowed the generation of cost-effective chromosome-level reference genomes. In the last decades, tremendous efforts were made to generate the most complete human genome. However, additional reference genomes spanning the entire tree of life are a necessary foundation for the study of biology in the 21st century, which was made possible with the establishment of large sequencing consortia. This thesis work represents a contribution to the collective effort of describing and preserving our planet's genetic diversity, being part of international consortia such as the Vertebrate Genomes Project (VGP), Darwin Tree of Life (DToL) and European Reference Genome Atlas (ERGA). Here I report new methods to assemble highly contiguous reference genomes for vertebrate species in the context of the VGP and their relevance in deciphering the biology of a species, its evolution, its intrinsic variability and in planning conservation actions, providing a comprehensive collection of genomic markers. Using the VGP pipelines, I have assembled 6 chromosome-level bird species: barn swallow (Hirundo rustica), lesser kestrel (Falco naumanni), American flamingo (Phoenicopterus ruber), common yellowthroat (Geothlypis trichas), rifleman (Acanthisitta chloris) and red-crested turaco (Tauraco erythrolophus), which fulfilled and exceeded the standard VGP metrics for genome assembly. Moreover, I contributed to the generation of the European nightjar (Caprimulgus europaeus) reference genome for the DToL. The genomes I generated will be exploited in the future to get insights into the biology of these species, but also for comparative genomics analyses using all available VGP-quality species. In particular, the lesser kestrel reference genome will be a fundamental resource for a future study that involves the assessment of how this species coped with climatic fluctuations in the past and how it is expected to cope with them in the future under the current scenario of climate changes. Moreover, the European nightjar genome will help to deepen the knowledge on the biology of this cryptic and
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elusive bird, also boosting the sequencing of other members of the Caprimulgidae family to reconstruct a comprehensive phylogeny. During my PhD, I particularly focused on barn swallow (Hirundo rustica) genomics, an iconic migratory passerine bird with a long-standing association with humans. Using the VGP-quality assembly, I performed comparative genomics, population genomics and pangenomics analyses. Comparative genomics work was carried out with the reference-free aligner Cactus, with which I have aligned the barn swallow reference with other chromosome-level bird species. Using the alignment, I performed a positive and negative selection analysis across the genome to find candidate genes under selection important for barn swallow biology. For population genomics analyses, we aligned all publicly available data for the barn swallow subspecies and populations to the reference genome and performed a Linkage Disequilibrium scan. Comparative and population genomics approaches both pointed at candidate genes under selective constraint which may have a role in the onset of the synanthropic behavior of the species. Finally, with the reference genome and other HiFi-based barn swallow assemblies, I constructed the first pangenome graph for the species and preliminarily evaluated the extent of core and accessory genes among individuals. We also complemented the nuclear genome-based study with the generation of the complete mitochondrial genome for the species, which allowed us to dissect the phylogenetic relationships between barn swallow subspecies and to clarify the species’ phylogeographic history.
In conclusion, this thesis work represents a valuable step forward and a contribution to international genome sequencing efforts. I outlined how complete genomic resources can revolutionize studies on the biology and evolution of a species, but also how they represent a pivotal resource to correctly plan threatened species conservation actions during the sixth mass extinction
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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