1,721,003 research outputs found
AVVX: A Vector Graphics Tool For Audiovisual Performances
No full textThis paper presents AVVX (AudioVisual Vector eXchange), a tool for live visuals and audiovisual performances developed by Nuno N. Correia. AVVX aims to answer the following question: how to design a tool for live visuals, allowing for the quick development of graphic materials, with open standards, and using the Internet as a resource for content exchange? The paper contextualizes the tool with related works, and with past projects from the author. The paper then presents the motivation for the creation of the tool, the design decisions behind it, and its development process. The main motivation for the creation of AVVX was the opportunity to teach a live visuals workshop in Ljubljana in June 2012, which had as outcomes an audiovisual performance and a VJ (Video Jockey / live visuals) performance. The author decided to focus AVVX on vector graphics manipulation. AVVX was released online as free and open-source software. A community website was built to share the content created for AVVX (AVVX.org). The paper also briefly discusses the operation of the tool. The workshop and its outcomes are then described. Two performances by the participants followed the workshop. After the workshop and the performances, the participants answered an online questionnaire, aiming to evaluate their experience with AVVX. The paper presents the results of this questionnaire. Conclusions are then reached based on these results, in addition to the author’s experience as workshop teacher and AVVX designer. Paths for future developments are discussed
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
Static Coefficient of Friction Between Stainless Steel and PMMA Used in Cemented Hip Implants
No full textBackground. Design of cemented hip and knee implants, oriented to improve the longevity of artificial joints, is largely based on
numerical models. The static coefficient of friction between the implant and the bone cement is necessary to characterize the interface
conditions in these models and must be accurately provided. The measurement of this coefficient using a repeatable and reproducible
methodology for materials used in total hip arthroplasty is missing from the literature.
Methods. A micro-topographic surface analysis characterized the surfaces of the specimens used in the experiments. The coefficient of
friction between stainless steel and bone cement in dry and wet conditions using bovine serum was determined using a prototype computerized
sliding friction tester. The effects of surface roughness (polished versus matt) and of contact pressure on the coefficient of
friction have also been investigated.
Findings. The serum influences little the coefficient of friction for the matt steel surface, where the mechanical interactions due to
higher roughness are still the most relevant factor. However, for polished steel surfaces, the restraining effect of proteins plays a very
relevant role in increasing the coefficient of friction.
Interpretation. When the coefficient of friction is used in finite element analysis, it is used for the debonded stem–cement situation. It
can thus be assumed that serum will propagate between the stem and the cement mantle. The authors believe that the use of a static
coefficient of friction of 0.3–0.4, measured in the present study, is appropriate in finite element models
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
