1,720,960 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
Studying the parameters involved with modulus-based construction quality control for compaction of unbound pavement layers
Get PDFPavement performance is impacted by several factors such as the properties of the materials, combination of traffic and loading, structural capability, climate changes and construction process. Earthwork and unbound materials is an important part of pavement constructions since most of the distresses can be related to these geomaterials. Appropriate process control, proper processing of geomaterials, adequate amount of moisture and suitable compaction effort would ensure the required density and stiffness of the compacted pavement layer. The Nuclear Density Gauge (NDG) has been the primary means of Quality Control and Quality Acceptance (QC/QA) by State Highway Agencies (SHAs) and department of transportations (DOTs) for many years. Although the difference in compacted layer moisture content at the time of testing with the moisture at the time of compaction plays an important role in stiffness of compacted geomaterials, most highway agencies have not been considered that in the construction quality control. Furthermore, measurement of moisture content and dry density, even though quite practical and straightforward, does not tie the construction with the design process where mechanical properties (as reflected in both AASHTO Pavement Design Guide and the Mechanistic Empirical Pavement Design Guide) such as stiffness and modulus were employed. Such transformation from density-based to modulus-based QC/QA approach has involved with some technical and organizational difficulties. In order to obtain high-quality pavement layers with long lasting performance, the reasons for such complications should be understood and promoted through complimentary laboratory and field investigations. Efficient and applicable control process should also be proposed alternatively. Recent advances emerged the use of in-situ Non-Destructive Testing (NDT) devices which adequately estimate the stiffness parameters of a constructed pavement structure. Such structural parameters are more representative of the pavement performance predicted during the empirical-mechanistic design process
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
Surface Displacement Measurement for Concrete Samples Using Image Correlation Algorithm
No full textThe use of image analysis as a tool for measuring surface displacement of an object has become relatively common with increasing advances in technology and accessibility to required tools. The benefits of having a non-destructive method for real time analysis of objects undergoing testing will improve data collection. In this study, a MATLAB code is implemented as a strain measurement and crack detection tool to enhance analysis during compression testing. Self-Consolidating Concrete mixtures with different fiber reinforcements such as steel fibers, micro fibers, and macro fibers are implemented for this study. For each batch, a video recording of the object undergoing testing is recorded and analyzed. The code creates a heatmap and graphs of the region being analyzed. The evaluation of the MATLAB code will determine the possibility of future applications for surface displacement and crack detection in place of current methods. Comparison with dial gauge readings in accordance to ASTM 469 will be completed to determine accuracy and optimization of the strain results. Optimal settings will be implemented for this study during recording
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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