Download or read book Task Performance in Virtual Environments written by Michael J. Singer and published by . This book was released on 1995 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Task Performance in Virtual Environments written by Michael J. Singer and published by . This book was released on 1995 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spatial Task Performance in Virtual Geographic Environments written by Adam John Rousell and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: It is well documented that within Virtual Environments performance in cognitive tasks is diminished, and with the continued use of such environments to train people in various skillsets it is important that this problem be addressed. In this thesis, two areas of spatial cognition are addressed: navigation and distance estimation. Unlike many previous studies, the experiments conducted here are in a large-scale virtual rural environment which poses problems due to the large distances involved and the unrestricted movement of people through it. A virtual representation of the Sorbas region in Spain was produced using Blueberry3D, VegaPrime and ArcMap. Attempts to improve performance were made by the display of information to the user: an overview map to aid in distance estimations; and geo-located 'factoids', or info-marks, to aid in navigation. Analysis was also performed to extract rural environment features that could fall into the classifications of the Urban Image Theory, and a novel visio-analytic approach conducted to analyse track log data collected from the navigation task. Results indicate that neither of the two tools implemented had much effect on user performance. However, a key finding was that the use of both quantitative and qualitative analysis is important in such research, as although quantitative analysis indicated only some significant results, the qualitative analysis highlighted that when the tools were presented users felt far more confident in their results. The visio-analytical approach adopted proved to be extremely useful in identifying performance characteristics that would have been missed by using quantitative analysis alone.

Download or read book Telepresence and Performance in an Immersive Virtual Environment and Sporting Task written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this research was to assess the relationship between telepresence and performance in a synthetic environment. Telepresence is believed to be a mental construct and to enhance task performance in teleoperations and virtual environments. Consequently, it has been identified as a design ideal for synthetic environments. However, there is a limited understanding of telepresence and its relation to task performance. This research involved examination of a range of synthetic environment design features (e.g., viewpoint and auditory cue type) that were suspected to influence telepresence and compared differences in telepresence and task performance caused by manipulations of these factors and task difficulty. A simulated basketball free-throw task was used in which subjects controlled the motions of a virtual basketball player. In addition to the basketball task performance (baskets/goals), subjects were required to report camera flashes in the virtual environment (stadium) and to simultaneously detect strobe light flashes in a real research laboratory. These tasks were designed as secondary-monitoring tasks and were intended to assess subject attention allocation to the virtual and real environments as an indicator of telepresence. Each subject was exposed to a single viewpoint condition including either an egocentric view, an exocentric view from behind the player, an exocentric view from the sideline of the court, or a selectable viewpoint. They were also exposed to four virtual sound conditions including task-relevant sounds, task-irrelevant sounds, a combination of sounds and no sound, as well as two visual display fidelity conditions including a low fidelity stadium composed of rendered walls surrounding the basketball court and a high fidelity stadium that displayed a texture of a crowd watching the game. Finally, the subjects experienced two task difficulty conditions including 2-point and 3-point shots. The order of presentation of the sound, fideli.

Download or read book Telepresence and Performance in an Immersive Virtual Environment and Sporting Task written by Ruiqi Ma and published by . This book was released on 2002 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: virtual reality, teleoperation, synthetic environment, virtual task performance.

Download or read book Effect of a Body Model on Performance in a Virtual Environment Search Task written by Michael J. Singer and published by . This book was released on 1998 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Influence of Lighting Quality on Presence and Task Performance in Virtual Environments written by Paul Michael Zimmons and published by . This book was released on 2004 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Display Type on Performance in Virtual Environments written by and published by . This book was released on 1996 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research was conducted as part of a program to determine interface requirements for enabling dismounted soldiers to train in Virtual Environments (VEs). We compared different VE display devices in terms of their effects on task performance, skill acquisition, and side effects. Forty-eight college students completed a series of visual and psychomotor tasks, a subset of the Virtual Environment Performance Assessment Battery (VEPAB), using either a Head-mounted Display (HMD), a head-tracked boom-mounted display, or a standard computer monitor. Performance on vision tasks was sensitive to differences in display devices and to individual differences. Visual acuity scores were ordered according to estimates of the resolution of the displays, but were worse than what would he predicted from the resolution estimates. In comparison to real-world performance, distance and height estimation in the VEs varied greatly across participants, especially with the HMD. Motor tasks had high reliability, demonstrated small but significant practice effects, and were correlated with participants' use of computers and video games. Unexpectedly, even the standard monitor group showed a significant increase in simulator sickness scores. The VEPAB tasks should prove useful in the future when design tradeoffs must be made in the process of developing training system prototypes.

Download or read book A Framework for Optimizing Manufacturing Task Performance Utilizing a Semi immersive Virtual Environment written by Janet H. Sanders and published by . This book was released on 2007 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extends extant research into the use of virtual reality (VR) for task completion as well as the development of a structure for virtual environment (VE) development. Provides a framework for the development of a VE that provides information for manufacturing task completion.

Download or read book Virtual Reality Training the Effect of Presence on Task Performance written by Philip Darrel Tidwell and published by . This book was released on 1998 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Virtual and Adaptive Environments written by Lawrence J. Hettinger and published by CRC Press. This book was released on 2003-06-01 with total page 597 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions from a collection of authors consisting of many recognizable experts in the field of virtual and adaptive environments, as well as many up and coming young researchers, this book illustrates the many ways in which psychological science contributes to and benefits from the increased development and application of these nascent systems. Discussing issues from both a user- and technology-based standpoint, the volume examins the use of human perception, cognition, and behavior. The book builds a foundation on the assumption that these systems are first and foremost human-centered technologies, in that their purpose is to complement and extend human capabilities across a wide variety of domains.

Download or read book Social Interaction in Virtual Environments written by Sara Dalzel-Job and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experience of Presence in Virtual Environments written by and published by . This book was released on 2003 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: Much attention has been focused on feeling a sense of presence in a virtual environment (VE). The potential importance of presence is based on an assumption that increasing the sense of presence experienced in a VE leads to an improvement in task performance. This document summarizes the results of experimental work that has been performed. Nearly 70 different measures of presence are identified, and over 100 studies that investigated various issues about the presence construct are cited. There are 83 findings regarding a relationship between presence and task performance. Roughly half of these show a significant correlation most in the expected direction. As yet, there is no evidence whether the relationships that do exist are causal in nature. Nonetheless, some conclusions are clear. Despite a decade of research, the role of presence in VEs is still unclear. No commonly agreed theory of presence much less common measures for this construct exist. Some evidence exists that particular technological, task, and personal characteristics can influence the extent of presence experienced in a VE. However, the critical question of whether manipulating presence can achieve improved task performance remains unanswered.

Download or read book Training Concepts for Virtual Environments written by Paul J. Sticha and published by . This book was released on 2002 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: development of virtual environment training systems. A review of existing methods of evaluating or predicting training effectiveness identified several candidates for incorporation into the method produced in this project. Based on the results of this review, we developed a method for Specifying Training Requirements in Virtual Environments (STRIVE), combining features from two existing methods. The STRIVE methodology assesses the capability of virtual environment technology to support task performance

Download or read book Effects of Head and Hand Movements Lags on Task Performance in a Virtual Environment written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: HKUST Call Number: Thesis IEEM 1999 Chung.

Download or read book Fatigue Effect on Task Performance in Haptic Virtual Environment for Home based Rehabilitation written by Chun Yang and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Training Concepts for Virtual Environments written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "The goals of this research are: (a) to develop a method for evaluating the capabilities of virtual simulation to represent the tasks and missions within a military application domain, (b) to demonstrate the methods in two domains, and (c) to propose ways to integrate the method with existing doctrine. Initial activities surveyed existing training systems and reviewed the capabilities of key virtual environment technologies. From this survey, we identified capabilities most likely to impede successful development of virtual environment training systems. A review of existing methods of evaluating or predicting training effectiveness identified several candidates for incorporation into the method produced in this project. Based on the results of this review, we developed a method for Specifying Training Requirements in Virtual Environments (STRIVE), combining features from two existing methods. The STRIVE methodology assesses the capability of virtual environment technology to support task performance based on subject matter expert judgments of selected cues and responses needed to perform task activities. A demonstration of the model was developed using Microsoft Access9?. The STRIVE methodology can be used during the concept exploration and definition phase of virtual environment training system design and can support the development of the Operational Requirements Document (ORD)."--Rept. doc. p.