1,721,019 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
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
Cue integration and competition during navigation
Get PDFNavigation is influenced by body-based self-motion cues that are integrated over time in a process known as path integration, and also by environmental cues such as landmarks and room shape. This project explored whether humans combine path integration and room shape cues when returning to a previously visited location and connects human cue integration research to animal cue competition research. Participants walked an outbound path in an immersive virtual environment before attempting to return to the path origin. Path integration and an environmental cue were both available during the outbound path, but experimental manipulations created single- and dual-cue conditions during the return path. Response variance when returning to the path origin was reduced when both cues were available. These findings indicate that humans integrate multiple spatial cues during navigation. Additionally, participants preferred environmental cues over path integration when cues were placed in a small conflict, while environmental cues were abandoned in favor of path integration cues when cues were placed in a large conflict.</p
Effect of spatial and non-spatial changes on perceived self-location
Get PDFPlace cell activity is measured through single-cell recording in animals, though place-responsive cells and related properties have been identified in the human hippocampus. Human behavioral studies would strengthen these findings, especially given the challenge of conducting neuroscientific research on human place-responsive cells. The current study was based on the finding (Lenck-Santini et al., 2005) that rodent place cells partially remap after spatial environmental changes (rotating objects relative to enclosure) but are unaffected by non-spatial changes (object substitution). In two completed studies, human perceived self-location was evaluated in response to spatial and non-spatial changes in a virtual environment (VE). Participants studied object locations in a learning VE with three orienting cues: two landmarks and a featural cue (blue stripe on the wall of the surrounding circular room). Participants then performed judgments of relative direction (JRD) in which they imagined various perspectives using the learned object locations. The JRD task was performed while standing in one of four test VEs which varied in spatial and non-spatial changes relative to the learning VE. Perceived self-location was inferred from the presence/absence of a sensorimotor alignment effect (SAE), indicated by facilitation for imagined perspectives aligned with the body at retrieval. It was expected that the SAE would be present in non-spatial change VEs and absent in spatial change VEs. As predicted, results indicated that non-spatial changes did not disrupt perceived self-location (SAE present). Spatial changes did disrupt perceived self-location (SAE absent), but this effect appeared to depend on participant view at test.</p
Individual differences in teleporting through virtual environments: A latent profile analysis
Get PDFTeleportation in virtual reality (VR) affords the ability to explore beyond the physical space. Previous work has demonstrated that this interface comes at a spatial cognitive cost – though, upon closer inspection, not everyone appears similarly affected. A latent profile analysis identified three groups that significantly differed on spatial updating performance and follow-up analyses showed significant differences in objective measures of spatial ability (e.g., mental rotation and perspective-taking). These results suggest that there are individual differences in domains of spatial cognition that are related to how well a user may keep track of his or her location while teleporting in VR.This is a manuscript of a proceeding published as Cherep, Lucia A., Alex F. Lim, Jonathan W. Kelly, Anthony Miller, and Stephen B. Gilbert. "Individual differences in teleporting through virtual environments: A latent profile analysis." In 2020 IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops (VRW), (2020): 724-725. DOI: 10.1109/VRW50115.2020.00213. Posted with permission.</p
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