1,720,955 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
Reservoir Characterization and Chemostratigraphy of the Goddard Shale in the South Central Oklahoma Oil Province
Full text linkThe Goddard Shale of the South Central Oklahoma Oil Province, or SCOOP, has become a formation of interest in recent years. However, there is a paucity of published information in regards to this formation. Therefore, the purpose of this study is to provide a reservoir characterization of the formation by means of core description of lithofacies, chemostratigraphic trends, chemofacies, mineralogy, and porosity. Additionally, this study sets out to define the appropriate nomenclature for the formation, which has not been defined in a formal sense.
Descriptions and chemostratigraphic work were carried out on two cores taken from the formation. One was taken from its uppermost organic-rich bench, which this study refers to as the Boatwright Shale, and the other core was taken from the lowermost organic-rich bench, which this study refers to as the Velma Shale. Both cores are predominantly siliceous-argillaceous with carbonate content being restricted to debris flows from the inner shelf. Each core contains its own parasequence set with higher-order intervals superimposed, most easily defined by the changes in continental input by means of trace elemental proxies, although each has a different manifestation of the effects of rising sea levels.
In analyzing the porosity of the formation, this study compares three different techniques: 1) FESEM image analysis utilizing ion beam milling, 2) FESEM image analysis utilizing freshly broken shale surfaces, and 3) a method that relies upon calculated matrix density based upon Rock-Eval and XRD mineralogy. Of the three, the broken surfaces technique appears to have produced the most accurate results due to the large margin of error in the calculated density technique and the general lack of inorganic porosity in the ion beam milling technique. Measured porosity values range from 7.04% to 13.11%
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
A comparison of two-phase inflow performance relationships
Full text linkThesis (M.S.)--University of Oklahoma, 1997.Includes bibliographical references (leaves 81-82).In this research, the individual performance of vertical oil wells are investigated. The objective of this study was to verify the suitability of certain empirical relations to predict the rate-pressure behavior of a single oil well producing from solution-gas drive
reservoirs. Inflow performance curves were generated for 26 cases based on actual field data. The predicted rates where then compared to actual measured rate and pressure data. The variation between the measured and predicted rates by the various methods studied has been analyzed. Based on this analysis, multipoint performance methods generally provide the most reliable estimates of well performance. Fetkovich' s multipoint method was the
most consistent performance predictionfor the cases studied. In addition, it was observed that no one method presented the best results for all cases and it is recommended that multipoint performance methods be utilized to yield a range of potential pressure-production behavior
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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