1,721,091 research outputs found
Location-aware Visualization of VRML Models in GPS-based Mobile Guides
No full textIn this paper, we present LAMP3D, a system for the locationaware
presentation of VRML content on mobile devices. We
explore the application of LAMP3D in tourist mobile guides: the
system is used to provide tourists with a 3D visualization of the
environment they are exploring, synchronized with the physical
world through the use of GPS data; tourists can easily obtain
information on the objects they see in the real world by directly
selecting them in the VRML world. We discuss the design and
development of the system and report about the feedback obtained
from the informal user testing we carried out
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
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
Brain activity and prosocial behavior in a simulated life-threatening situation
No full textTo study the neuronal basis of altruistic behavior, we investigated functional
connectivity within brain networks of participants who exhibited either a
self-benefit behavior or an altruistic one in a life-threatening situation
simulated in a virtual environment. In particular, participants were asked to
evacuate a virtual building on fire and, without being previously informed, they
were faced with a decision on whether to stop and help a trapped virtual human,
at the possible cost of losing their own life in the virtual experience. Group
independent component analysis (gICA) applied on blood-oxygen-level-dependent
(BOLD) functional images revealed significant differences between the group of
participants who showed selfish behavior and those who acted prosocially.
Specifically, an increased functional connectivity in the salience network,
comprising the anterior insula (AI) and the anterior mid cingulate cortex (aMCC),
was observed in the selfish group compared to the prosocial one. Conversely,
higher ICA weights in the medial prefrontal cortex and temporo-parietal junction
(TPJ), were observed in the prosocial group. The findings show that an increased
functional connectivity of the salience network, which suggests an enhanced
sensitivity to the threatening situation and potential danger for the individual,
resulted in more selfish choices, while the engagement of the medial prefrontal
and temporo-parietal cortices subserved prosocial behavior, possibly due to their
role in perspective-taking. The study provides the first online
neurophysiological measurement of prosocial decision-making during threatening
situations, opening new avenues to the investigation of neuronal substrates of
complex social behaviors
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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