1,720,954 research outputs found
Investigation of Advanced Non-Circular Slip Surfaces for Slopes
Get PDFAs technology has advanced over the past years, the slip surfaces analyzed during the design of slopes have become more advanced compared to the basic circular surfaces used in earlier years. While this has been happening, the slopes that were designed with the simpler circular methods and then re-evaluated with these new more complex non-circular methods are shown to have a lower factor of safety during re-evaluation. This then incites the question of what does this mean for engineering design? If we can prove that the more complex non-circular slip surface methods are more accurate, then a possible shift to a lower design factor of safety may be required. This would not mean that the slope is less stable, but that the methods to analyze these slopes have become more accurate; therefore, a higher factor of safety in design is not required. In order to investigate this and be able to verify results, the use of case studies is being implemented. These case studies give us soil information and design information, which can be remodeled in software and then analyzed using the different non-circular slip surface method. These can then be compared to the equivalent results of common circular methods. This research is still ongoing, but during early stages, there have been "critical" inputs that must be acknowledged, as they will drastically affect the calculated factor of safety for the slope being analyzed
UL-FGA: Expanding The Database
No full textFor years now, America has been in need of a new type of aggregate that is both lightweight and environmentally friendly, along with encompassing other properties desired by various projects. AeroAggregate, LLC has now released an ultra-lightweight foamed glass aggregate (UL-FGA) in North America that has a low unit weight, a high friction angle, and is highly permeable. The purpose of this research was to expand the current database on this aggregate. During this research, the usage of photogrammetry sieve analysis and one-dimensional compression were used to test the properties of UL-FGA. Since UL-FGA had the property to break into smaller pieces when sieved in a standard sieve shaker, a solution was needed to get grain size analysis properly. This led to the use of photogrammetry sieve analysis. The software used could then accurately estimate the particle size in volume compared to the particle diameter of UL-FGA. This method is still not as accurate as a standard sieve shaker, but it did solve to the solution of getting an estimate of the grain size analysis without rounding the edges of the UL-FGA sample. This research also used the process of one-dimensional tests to get data such as plots of stress vs strain. This research was concluded by comparing the past research to this updated research, which resulted in many similarities and differences that can be used to gain a broader understanding of this aggregate and possible future uses
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
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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