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Master of Science
Get PDFthesisPrevious research has suggested a link between cognitive workload and gaze concentration. As mental workload increases, humans begin to stare straight ahead. If drivers\u27 scanning behaviors are attenuated as a result of secondary in-vehicle tasks, then their situation awareness and their ability to react to unpredictable events may be impaired. Using video-based eye tracking technology in a naturalistic setting is notoriously difficult; however, electrooculography (EOG) may provide a reliable, real-time measure of changes in visual scanning under manipulated levels of cognitive workload. This study assessed the viability of EOG to measure changes in scanning behavior when drivers performed common in-vehicle tasks while driving an automobile. Notably, EOG measures were not sensitive to driver\u27s workload, but instead demonstrated that speech production inherent to a task contributes to an additive effect in identified eye movements
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
Doctor of Philosophy
No full textdissertationResidual costs have been demonstrated in discrete task switching paradigms for decades. However, residual costs have recently been shown to last considerably longer than previously thought when intermittent multitasking is occurring. Three experiments aimed to replicate (Experiment 1) and manipulate residual costs in a controlled driving environment. Two theories were hypothesized to contribute to the residual cost formation, Task Set Inertia (TSI) and Situation Awareness Recovery (SAR). TSI was tested by manipulating the difficulty and complexity of a secondary task, with a more complex task believed to "linger" longer causing increased residual costs. SAR was tested by manipulating the complexity of the driving environment, with greater complexity believed to contribute to a greater amount of time to recover situation awareness. Reaction time, accuracy, and eye tracking were measured over time to assess the differential contribution of both theories to the residual costs. The results support both TSI and SAR as contributing to the creation of the residual costs, with the costs being found following tasks without loss of situation awareness (Experiment 2), and varying between different driving environment complexities (Experiment 3). The two most robust eye tracking measures, gaze time spent in regions of interest (ROIs) and standard deviation of horizontal dispersion revealed changes in visual scanning indicative of drivers actively reacquiring awareness of the driving environment following secondary task engagement
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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