1,720,956 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
Chorioamnionitis and the Risk for Preterm Sepsis
No full textNeonatal sepsis is the bacterial infection of the bloodstream in infants under 28 days old and is one of the leading causes of death in children under the age of five worldwide. Early antibiotic treatment is crucial to prevent the spread of sepsis. Symptoms of neonatal sepsis are non-specific, meaning that signs, symptoms, and risk factors must be recognized and monitored closely for diagnosis. This study focuses on how chorioamnionitis, the maternal infection of the amniotic sac, affects the risk of sepsis in preterm neonates. Data for this study was collected from 318 premature neonates and mothers across the University of North Carolina, Eastern Carolina University, the Medical University of South Carolina, PRISMA, and Duke University starting in June 2019 and is continuing to be collected as of July 2023. The presence of sepsis was recorded daily and the presence of maternal chorioamnionitis was recorded at one time. This data was then processed using Python and tested using a chi-square analysis to determine the correlation between the two diseases. The data collected produced a chi-square value of 2.74 with a p-value of 0.1, showing a trend in the data, but not enough to make a significant conclusion. This data gives a phi-value of 0.32, meaning that the sample size was too small to give conclusive information. With the trend shown between the two conditions, premature neonates that have mothers with chorioamnionitis should be watched closely to begin antibiotic treatment as soon as sepsis is suspected and improve prognoses
Exploring Protein-Ligand Interactions to Increase the Binding Action of Kynurenic Acid to GPR35
No full textThe g-protein coupled receptor 35, or GPR35, is the receptor responsible for the initiation of the chemokine-mediated signaling pathway in humans, expressed primarily in the duodenum and small intestine. GPR35 has been demonstrated to protect against neuroinflammation and play a major role in extending lifespans. While much is unknown regarding the physiological mechanisms of GPR35, it has become an area of interest in targeting inflammation and gastrointestinal pathology, as it shows promising results in reducing vasoconstrictive responses and allergic reactions. Kynurenic acid, a derivative of L-tryptophan, is a primary ligand to GPR35. When bound to the active site of GPR35, kynurenic acid produces various neurological and gastrointestinal effects. Ligands that bind to the same binding site on GPR35 are kynurenic acid, lodoxamide, and zaprinast. Through protein docking in the Schrödinger Maestro software, docking scores were first calculated for the unaltered compounds. Kynurenic acid originally produced a docking score of –8.697 kcal/mol, lodoxamide originally produced a docking score of –14.152 kcal/mol, and zaprinast originally produced a docking score of –7.495 kcal/mol. Through examining a ligand interaction diagram, the importance of oxygens and the high hydrophobicity of kynurenic acid were examined. Using this data, multiple alcohol groups were added to counter the hydrophobic nature of kynurenic acid while keeping the oxygens constant to preserve the previously established amino-acid interactions. Kynurenic acid’s docking score was improved from –8.697 kcal/mol to –15.604 kcal/mol, showing an improvement in kynurenic acid’s binding to GPR35
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
- …
