1,720,956 research outputs found
'MotorcycleSim': An evaluation of rider interaction with an innovative motorcycle simulator
No full textThis paper describes a user-centred design process that has been used to develop an innovative simulator for research into motorcycle ergonomics and rider human factors. Building on initial user requirements and user experience elicitation exercises, an evaluation was conducted to investigate specific issues associated with simulator fidelity. An experimental approach was employed to examine the physical and functional fidelity of the simulator. Using different steering and visual feedback configurations, a battery of objective and subjective dependent variables were analysed including: user perceptions and preferences, rider performance data, rider workload, rider comfort issues and the first evaluation of simulator sickness for a motorcycle simulator. The results indicated that across a number of measures, aspects of functional fidelity were considered more important than the physical fidelity of the simulator. This evaluation takes the development of the simulator a stage further and the paper provides recommendations for future improvements.</p
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
Compression After Impact Of Sandwich Composite Panels With Thick Facesheets
No full textDespite the numerous advantages that sandwich composites offer in transport structures over traditional metallic structures, they remain highly susceptible to low-energy impact damage, resulting in a significant reduction in compressive strength. To this end, an experimental and computational study of damage tolerance following quasi-static indentation (QSI) at the barely-visible indentation threshold was performed. Sandwich composite panels consisted of 16-ply carbon-epoxy facesheets bonded to an aluminum honeycomb core. A parametric study was undertaken to study the effect of facesheet layup, and core geometry. This was correlated with the indentation damage and compression strength and failure mode following indentation. Two spherical indenters were used to study the effect of indenter geometry. Experimental compressionafter-impact (CAI) strength was compared to the undamaged strength obtained from edgewise-compression tests of specimens with the same geometry type. Three distinct failure modes were observed in the CAI experiments: compressive fiber failure, delamination buckling and global instability. Post-indentation compressive strength was independent of indenter size and there was no clear propensity for a particular failure mode dependent on a given specimen geometry. Specimens with a high core density and facesheets with a primary ply angle change of 90? were found to be the most damage resistant. Specimens with facesheets having the outer 0? plies closest to the center of the laminate were found to be the most damage tolerant. A computational model using finite element software (ABAQUS) was developed to simulate damage resistance and damage tolerance of sandwich composites subjected to low-energy impact. The model simulated both the indentation damage event and the subsequent CAI test in a single simulation. The facesheet fiber/matrix damage and core crushing were captured by the model. The model was applied to the facesheet and core parameters tested in the experimental study, and additionally the facesheet thickness was studied by simulating 8-ply specimens. The numerical results were then compared with the experimental results for the same specimen type. For the indentation damage results, the 8-ply numerical results compared better than did the 16-ply results. The CAI strength was greatly over-predicted for all specimen types which shows the need to incorporate all damage mechanisms within the model. It is likely that inclusion of the delamination damage mechanism would lead to a better prediction in CAI strength
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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