1,720,959 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
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
Development of freeze-dried nanoparticles incorporating gene therapy for the management of retinopathy of prematurity
No full textRetinopathy of prematurity (ROP) is a posterior eye disorder found in prematurely born infants, that can result in blindness. In this thesis a delivery system, for the prophylactic management of the disease was designed and tested based on the hypothesis that delivery of a hypoxia inducible plasmid to the posterior eye might prevent the pathogenesis of the ROP. Major challenges identified for the project included: characterisation of the hypoxia inducible plasmid, efficient transfection of the target cells and delivering the DNA to the posterior eye with a minimally invasive route. To meet these requirements it was proposed to encapsulate a hypoxia responsive plasmid condensed with a cationic peptide (RALA) within PLA-PEG nanoparticles that can deliver the DNA to the posterior eye via transscleral route for efficient transfection of the retinal endothelial cells. In order to pursue this hypothesis the DNA condensation with RALA was optimized to give nanoparticies (RNPs) with a z-average diameter of 58.7±10.3 nm and PDI of 0.252±0.050. These nanoparticies efficiently transfected a variety of cell lines. A series of PLA-PEG block copolymers were synthesized with various PEG chain length and LA/EG ratio, and formulated into composite nanoparticles (diameters 30% of DNA content was released over 6 weeks. Finally these nanoparticles were evaluated for their ability to cross the sclera and the results demonstrated that > 1 0% of PLA20-PEG2 and 8% of PLA25-PEG5 . nanoparticles crossed the sclera in a 4 hrs, whereas PLGA nanoparticles exhibited permeation of just 3.2% in this time. While the selected hypoxia responsive plasmid, pE9/GFP, failed to show its specificity to express only in hypoxia conditions the work presented herein demonstrates that the proposed delivery system is viable. Thus, this thesis demonstrates the preparation of a composite nanoparticle system where inner RNPs demonstrated their efficiency to condense the DNA and enable them express inside cells and outer PLA-PEG nanoparticles demonstrated their efficiency to cross the sclera. This system is a promising candidate for the prophylactic management of ROP and may be suited to other gene therapies.EThOS - Electronic Theses Online ServiceGBUnited Kingdo
International Integration Of Commodity Markets: A Test Of Arbitrage Under Changing Exchange Rates.
No full textPhDBusiness communityUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/178668/2/7916737.pd
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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