1,720,964 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
Components of the metabolic syndrome: clustering and genetic variance
No full text Background Abdominal obesity, hyperglycemia, hypertriglyceridemia, low HDL cholesterol levels and hypertension frequently co-occur within individuals. The cluster of these features is referred to as the metabolic syndrome (MetS). The aim of this thesis was to investigate which metabolic endpoints should be studied in order to explain the clustering of MetS features best. Furthermore, genetic association studies were conducted to get more insight into the pathophysiology underlying the clustering of MetS features. Methods We conducted two studies to investigate which metabolic endpoints should be studied in order to best explain the clustering of MetS features. In the EPIC-NL case-cohort study we studied the model fit and predictive ability for type 2 diabetes (T2D) and cardiovascular diseases (CVD) of several MetS models, including traditional and novel MetS features. Model fit was analysed with confirmatory factor analysis. Furthermore, we reviewed published twin and family studies, which presented genetic correlation coefficients between different traditional and novel MetS features and between MetS and novel MetS features. We conducted four studies investigating which single nucleotide polymorphisms (SNPs) were associated with clustering of MetS features. First, we systematically reviewed published candidate gene studies on MetS. Second, we analysed whether SNPs associated with inflammatory biomarkers, waist circumference, insulin resistance, HDL cholesterol or triglycerides in genome wide association studies (GWAS) were also associated with MetS and MetS-score in a random sample of the EPIC-NL study. Third, in the Doetinchem cohort, we determined if SNPs of genes located in transcriptional pathways of glucose and lipid metabolism were associated with multiple MetS features simultaneously. Fourth, we evaluated the interaction between these SNPs and BMI in relation to glucose levels. Results A MetS model composed of the traditional MetS features and high sensitive C-reactive protein (hsCRP) optimally predicted T2D and CVD, while still representing a single entity. Our review of 9 twin and 19 family studies showed that genetic correlations were strongest, i.e. genetic pleiotropy was highest, between waist circumference and HOMA-IR, HDL cholesterol and triglycerides, and between adiponectin and MetS. After having systematically reviewed 25 genes in 88 candidate gene studies, we found evidence for an association of FTO rs9939609, TCF7L2 rs7903146, APOA5 C56G (rs3135506), APOA5 T1131C (rs662799), APOC3 C482T (rs2854117), Il6 174G>C (rs1800795) and CETP Taq-1B (rs708272) with MetS. SNPs associated with waist circumference in GWAS were on a group level significantly associated with MetS in a random sample of EPIC-NL, whereas a group of SNPs associated with insulin resistance was significantly associated with MetS-score. On the individual level MC4R rs17782312 and IRS1 rs2943634 were associated with MetS. In the Doetinchem cohort CETP Ile405Val (rs5882) and APOE Cys112Arg (rs429358) were associated with both the prevalence of low HDL cholesterol levels and with abdominal obesity. In this cohort, two highly correlated SNPs in the PPARGC1A gene, Gly482Ser (rs8192678) and Thr528Thr (rs3755863), showed a significant interaction with BMI on glucose levels. Conclusion Our results show that one MetS factor with or without hsCRP, can be used to study the clustering of MetS and MetS related features, because this factor can be represented as one statistical entity. However, in order to fully explain the clustering of MetS features, specific combinations of MetS features should be studied. Our results indicate that genetic pleiotropy is highest for the combination of HOMA-IR and waist circumference and the combination of HDL cholesterol and triglycerides. Therefore these combinations are good candidate endpoints for studies on genetic variants pleiotropic to several MetS and MetS related features. SNPs associated with the clustering of MetS features are involved in mechanisms traditionally believed to underlie MetS development, i.e. glucose metabolism and weight regulation, but also in other mechanisms, i.e. lipid metabolism and inflammation. This suggests that, although the MetS features may represent a statistical entity, there are multiple, related mechanisms explaining the clustering of MetS features.</p
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
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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