1,720,956 research outputs found
Exploring Alternative Text Input Modalities in Virtual Reality: a Comparative Study
No full textDeze thesis onderzoekt verschillende tekstinvoersystemen in virtual reality (VR). Het vergelijkt verschillende toetsenbordconfiguraties en invoermethoden zonder controllers, met als doel prestaties, gebruikerservaring en mogelijke verbeteringen van VR-tekstinvoersystemen te begrijpen.
Vier tekstinvoersystemen worden geanalyseerd: Keyboard on shape, Keyboard on hands, Keyboard with eyes, en Keyboard in air. De prestaties worden beoordeeld op typesnelheid, nauwkeurigheid, gebruikscomfort en mentale en fysieke belasting.
De resultaten tonen variaties in prestaties afhankelijk van factoren. Keyboard on shape biedt de hoogste typesnelheid en gebruiksvriendelijkheid, terwijl Keyboard on hands de meeste mentale en fysieke belasting veroorzaakt. Sterke en zwakke punten van elk systeem worden geïdentificeerd, wat waardevolle inzichten biedt voor toekomstige ontwerpaanpassingen.
Het onderzoek bespreekt implicaties voor het ontwerp van VR-tekstinvoersystemen, benadrukkend de balans tussen snelheid, nauwkeurigheid en gebruikerscomfort. Het belang van het verminderen van fysieke en mentale belasting wordt ook onderstreept.
Conclusies wijzen op het belang van iteratieve ontwerpprocessen en experimenteren met vernieuwende aanpakken voor effectieve en aangename VR-interfaces. Hoewel er nog vragen en verbeterpunten zijn, vertegenwoordigt dit onderzoek een belangrijke stap in het begrijpen van VR-tekstinvoersystemen
Exploring Alternative Text Input Modalities in Virtual Reality: a Comparative Study
No full textDeze thesis onderzoekt verschillende tekstinvoersystemen in virtual reality (VR). Het vergelijkt verschillende toetsenbordconfiguraties en invoermethoden zonder controllers, met als doel prestaties, gebruikerservaring en mogelijke verbeteringen van VR-tekstinvoersystemen te begrijpen.
Vier tekstinvoersystemen worden geanalyseerd: Keyboard on shape, Keyboard on hands, Keyboard with eyes, en Keyboard in air. De prestaties worden beoordeeld op typesnelheid, nauwkeurigheid, gebruikscomfort en mentale en fysieke belasting.
De resultaten tonen variaties in prestaties afhankelijk van factoren. Keyboard on shape biedt de hoogste typesnelheid en gebruiksvriendelijkheid, terwijl Keyboard on hands de meeste mentale en fysieke belasting veroorzaakt. Sterke en zwakke punten van elk systeem worden geïdentificeerd, wat waardevolle inzichten biedt voor toekomstige ontwerpaanpassingen.
Het onderzoek bespreekt implicaties voor het ontwerp van VR-tekstinvoersystemen, benadrukkend de balans tussen snelheid, nauwkeurigheid en gebruikerscomfort. Het belang van het verminderen van fysieke en mentale belasting wordt ook onderstreept.
Conclusies wijzen op het belang van iteratieve ontwerpprocessen en experimenteren met vernieuwende aanpakken voor effectieve en aangename VR-interfaces. Hoewel er nog vragen en verbeterpunten zijn, vertegenwoordigt dit onderzoek een belangrijke stap in het begrijpen van VR-tekstinvoersystemen
Exploring Alternative Text Input Modalities in Virtual Reality: A Comparative Study
No full textText input in Virtual Reality (VR) is crucial for communication, search, and productivity. We compared four keyboard designs for VR text entry, leveraging the flexibility and the tracking options of a 3D environment. We used the Dvorak layout to control for experience differences. The designs were: (a) a floating keyboard with touch input, (b) a keyboard attached on the back of the hand with touch input, (c) a floating keyboard with eye tracking and pinch input, and (d) a keyboard laid out over a rolling shape with touch input. Designs (b), (c), and (d) can move in 3D space, while design (a) is static. Design (d) had similar efficiency to design (a) but with better usability and lower Physical Demand. Design (b) led to higher Physical Demand, Effort, and Frustration. Design (c) had lower Physical Demand but higher Mental Demand, Effort, and error rates. Typing speeds averaged 6.51 WPM (1.24% error rate) for (a), 5.56 WPM (3.82% error rate) for (b), 5.33 WPM (1.43% error rate) for (c), and 6.70 WPM (1.64% error rate) for (d).The infrastructure for this work is funded by the European Union – NextGenerationEU project MAXVR-INFRA and the Flemish government
Evaluation of AR Pattern Guidance Methods for a Surface Cleaning Task
No full textCleanroom cleaning is a surface coverage task where the pattern should be followed correctly, and the entire surface should be covered. We investigate the efficacy of augmented reality (AR) by implementing various pattern guidance designs to enhance a cleanroom cleaning task. We developed an AR guidance system for cleaning procedures and evaluated four distinct pattern guidance methods: (1) breadcrumbs, (2) examples, (3) middle lines, and (4) outlines. We vary the instructions on the entire surface or as a single step. To measure performance, accuracy, and user satisfaction associated with each guidance method, we conducted a large-scale (n=864) between-subjects study. Our findings indicate that single step instructions proved to be more intuitive and efficient than full instructions, especially for the breadcrumbs. We also discussed the implications of our results for the development of AR applications for surface coverage and pattern optimization.This work was made possible with support from the projects XRHuis and MAXVR-INFRA subsidized by the Flemish Government and the European Union. We also want to thank the two cleanroom
cleaning companies for providing design input and the employees from the study company for their participation in the study
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
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