1,720,974 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
Ein nutzungszentrierter Ansatz zur Bestimmung von Fahrsimulatorvalidität
No full textDriving simulators have become widely used tools in human-centered automotive development, offering significant advantages in terms of controllability and repeatability. However, driving simulators must deliver valid results enabling the transfer of findings to real driving situations. Though it has been debated for as long as driving simulators have existed, there is still no consensus on when a simulator should be considered valid. Therefore, in this thesis, a methodology for determining simulator validity is proposed. Furthermore, we investigated the general impact of simulator fidelity on validity. Contrary to popular belief, our results suggest that higher fidelity does not necessarily increase validity, although it reduces simulator sickness. Depending on the use case, there are further advantages of higher fidelity simulators. To identify further predictors of validity, we investigated the relationship between the feeling of presence and validity, following the idea that one should behave more realistically in an environment perceived as real. Surprisingly, no clear relationship was found between presence and validity. Finally, the effects of isolated simulator properties were considered. Larger motion systems led to more valid results in terms of acceptance, user experience, and cognitive load in the context of a level 2 driver assistance system. Improving pedestrian agent models can foster social presence, though is not expected to largely affect driving behavior. Considering the effects of the visualization system independently, we found that head-mounted displays are generally suitable for driving simulation with no significant differences in terms of simulator sickness, driving behavior, or perception. In summary, this work provides guidance in the selection of suitable simulators for different use cases as well as a method for investigating simulator validity, emphasizing the importance of the intended use in assessing validity. While the simulators examined proved to be valid for a large number of use cases, the present thesis also revealed instances of non-valid results, which the field has yet to overcome. We conclude that while simulators are invaluable for studying driving behavior in a controlled and reproducible manner, additional real-world validation studies may be necessary when decisions based on simulator experiments carry significant risk.Author Chantal Himmels, M.Sc.Abweichender Titel laut Übersetzung der Verfasserin/des VerfassersDissertation Johannes Kepler Universität Linz 202
Ein nutzungszentrierter Ansatz zur Bestimmung von Fahrsimulatorvalidität
No full textDriving simulators have become widely used tools in human-centered automotive development, offering significant advantages in terms of controllability and repeatability. However, driving simulators must deliver valid results enabling the transfer of findings to real driving situations. Though it has been debated for as long as driving simulators have existed, there is still no consensus on when a simulator should be considered valid. Therefore, in this thesis, a methodology for determining simulator validity is proposed. Furthermore, we investigated the general impact of simulator fidelity on validity. Contrary to popular belief, our results suggest that higher fidelity does not necessarily increase validity, although it reduces simulator sickness. Depending on the use case, there are further advantages of higher fidelity simulators. To identify further predictors of validity, we investigated the relationship between the feeling of presence and validity, following the idea that one should behave more realistically in an environment perceived as real. Surprisingly, no clear relationship was found between presence and validity. Finally, the effects of isolated simulator properties were considered. Larger motion systems led to more valid results in terms of acceptance, user experience, and cognitive load in the context of a level 2 driver assistance system. Improving pedestrian agent models can foster social presence, though is not expected to largely affect driving behavior. Considering the effects of the visualization system independently, we found that head-mounted displays are generally suitable for driving simulation with no significant differences in terms of simulator sickness, driving behavior, or perception. In summary, this work provides guidance in the selection of suitable simulators for different use cases as well as a method for investigating simulator validity, emphasizing the importance of the intended use in assessing validity. While the simulators examined proved to be valid for a large number of use cases, the present thesis also revealed instances of non-valid results, which the field has yet to overcome. We conclude that while simulators are invaluable for studying driving behavior in a controlled and reproducible manner, additional real-world validation studies may be necessary when decisions based on simulator experiments carry significant risk.Author Chantal Himmels, M.Sc.Abweichender Titel laut Übersetzung der Verfasserin/des VerfassersDissertation Johannes Kepler Universität Linz 202
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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