1,720,957 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
The Effect Of Chlorine And Bleach On The Color Intensity Of Pig Skin
Get PDFThe purpose of this experiment is to investigate the effect of chlorine and bleach on pigskin, which is similar to human skin. This project will help people who enjoy pools, to determine the effect of commonly used pool chemicals on their skin. It is hypothesized that if chlorine reacts with pigskin to a greater extent than bleach, it will make the pigskin lighter than the other variable will. 30 samples of pig skin were cut and were measured for light intensity, using imagej. They were then placed in petri dishes, where they were soaked in the water from the chlorine pool simulation for 45 minutes. After this, they were rinsed, and their light intensity was measured. The chlorine pool simulation consisted of .0198 grams of chlorine, 1 gallon of water and .0181 grams of soda ash. The same process was repeated in the water from the bleach pool simulation. The bleach pool simulation consisted of .0189 grams of bleach, 1 gallon of water and .0181 grams of soda ash. Although chlorine had a greater effect on the color intensity, a T-test showed that the effect was not significant. This proves the null hypothesis, which is that chlorine reacts with pigskin the same as or to a lesser extent than bleach, it will make the pigskin lighter than bleach
Investigation of Polybenzoxazine Vitrimers Based on Dynamic Transesterification Exchange
No full textWith the ever-increasing issue of plastic waste production, a greener approach to synthetic processes and increased sustainability in plastic materials is still a high demand. Thermosets, which find uses in applications such as coatings, adhesives, and aerospace composites account for 15% of global plastics production, are particularly problematic in this context, as covalent crosslinks within the material serve both as a source of high-performance stability during use and as a barrier to conventional recycling after use. Therefore, our efforts focus on the incorporation of dynamic transesterification exchange chemistry into polybenzoxazine thermosets, which allows these materials to undergo reprocessing. This investigation highlights the synthesis of novel benzoxazine monomers capable of forming vitrimeric networks and the structure property relationships based on monomer design flexibility. A series of benzoxazine monomer libraries were synthesized to evaluate the structure property relationships based on key factors such as amine selection, ester concentration, and dynamic and non-dynamic functionalities. The thermomechanical and mechanical properties of the resulting networks were evaluated and correlated to the monomer structure. The dynamic behavior of the polybenzoxazine networks was assessed with respect to the topological rearrangement temperature, activation energy, and relaxation times. Reprocessability of the networks were highlighted in Chapter III, revealing retention of thermomechanical properties and reusability of the materials. Flexibility in properties are shown in the networks in Chapter IV, highlighting materials with dynamic capabilities, variable mechanical strengths, and flame resistance. Finally, novel polybenzoxazine vitrimer networks are synthesized in Chapter V, revealing the use of variation in monomer design to further tune and understand dynamic exchang
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
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