1,720,965 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
Adaptation of an MDO platform for system architecture optimization
No full textEarly design decisions have a significant influence in the final success of the project. One of the most important decisions is to determine the system architecture, as it highly impacts the performance of the system. System architecture optimization can be used to determine the best possible architectures through the formulation of an optimization problem, allowing to explore the design space without traditional bias and conservatism.MDO can be used to evaluate the performance of each architecture, allowing to consider the interactions between the multiple and coupled disciplines involved in the design process. To do this, MDO platforms have to satisfy multiple requirements, including the automatic readjustment of the MDO problem for each system architecture. They also have to be adapted to collaborative MDO, so that they can be used in real industrial cases.Before this research, there was not MDO platform that satisfied all these requirements, impeding the integration of system architecture optimization in the industry. The MDO platform consisting on MDAx and RCE was adapted to collaborative MDO and satisfied all requirements to be used as architecture evaluator, except the automatic readjustment of the MDO problem. To fill the previous gap, the main objective of this research has been to extend MDAx backend code to allow the formulation of thesedynamic MDO problems, allowing to use it in the system architecture optimization process.To achieve this, first the possible modifications that the system architectures can cause in the MDO problem, called architectural influences, are determined. Then, some possible implementation strategies MDO platforms can use to deal with these influences are presented. After that, the actual implementation process used to extend MDAx backend code is widely discussed.Afterwards, a benchmark problem based on Fourier series is used to verify the implementation. A real engineering problem, based on the design of a space multistage rocket, is also used as validation to show the potential tool, and more generally, of the methodology. Finally, some conclusions and possible future steps are drawn.In conclusion, this research allows to reduce the existing gap between system architecture optimization and MDO by obtaining an MDO platform that can be used as an architecture evaluator. Also, the different requirements identified for the inclusion of architectural influences, as well as the benchmark problems discussed, are aimed to help developers to extend their MDO platforms to be adapted to system architecture optimization, reducing the barriers for its implementation in the industry.Aerospace Engineerin
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
Collaborative Aircraft Design: The AGILE Paradigm
Get PDFA short overview of the paradigm developed in the AGILE H2020 project: collaborative roles, the 5-step development process, 7 unconventional aircraft designs, and project statistics
Collaboration Enablers in Aircraft Design
Get PDFAn overview of collaboration enablers in aircraft design as developed at DLR-SL and partners: CPACS, KE-chain, MDAx, RCE, and SSO
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
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