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Slides for the CRC 1456 Research Retreat Session "Live-Docs and RDM: Reproducibility and beyond"
No full textSlides presented at the CRC 1456 Research Retreat in Hofgeismar
Airship-assisted space launch.
Get PDFIntroduction Being lighter-than-air, airships do not seem to be an obvious
platform choice for dropping of heavy objects. We have challenged the idea and
this paper presents the summary of a speculative concept which utilises airships
as a reusable first stage of a space launch system. The inspiration behind the
concept was that if not much cheaper, the airship-assisted space launch will be
environmentally friendlier- an argument which is likely to become even more
important with time. During the development of the concept we have used as a
base for comparison the Orbital Sciences Corp. Pegasus XL concept, which is
currently the single operational aircraft-based space launch system. Alongside
the challenges of estimating weight and cost of the very large airship required
(approximately 728,000 m 3 ), the work presented in this paper concentrates
mainly on the process of releasing the space launch vehicle from the airship
1456-1459. Clàusula testamentària
No full textClàusules testamentàries de:
1) Francesc Maria, mercader de Barcelona (12 de juny de 1459).
2) Eufrasina, muller de l'anterior (26 d'abril de 1456).
Còpia del 18 de setembre de 149
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
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