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Thomas J. Solz

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Publications by Thomas J. Solz (bibliography)

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1995
 
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Reising, John M., Liggett, Kristen K., Solz, Thomas J. and Hartsock, David C. (1995): A Comparison of Two Head-Up Display Formats Used to Fly Curved Instrument Approaches. In: Proceedings of the Human Factors and Ergonomics Society 39th Annual Meeting 1995. pp. 1-5.

With the advent of the Global Positioning System (GPS), pilots will be able to fly curved instrument approaches. Since current head up display (HUD) symbology was not specifically designed to present this curved information, a study was conducted to determine the most effective set of HUD symbology to assist pilots in flying curved approaches. The military standard HUD symbology was compared with the Pathway HUD format. Dependent measures collected for the comparison were root mean square (RMS) course deviations, RMS altitude deviations, and RMS airspeed deviations. Results showed that there was a significant difference in pilot performance for all dependent measures -- subjects performed better using the Pathway HUD format than the standard HUD symbology in all cases. Pilots comments attributed the advantage of flying the Pathway HUD format to the fact that they could see their route in the form of a highway from their present position to a point 45 seconds into the future. This allowed them to anticipate necessary control movements.

© All rights reserved Reising et al. and/or Human Factors Society

1994
 
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Solz, Thomas J., Reising, John M., Liggett, Kristen K., Lohmeyer, Troy and Hartsock, David C. (1994): The Use of Aiding Techniques and Varying Depth Volumes to Designate Targets in 3-D Space. In: Proceedings of the Human Factors and Ergonomics Society 38th Annual Meeting 1994. pp. 1-5.

The purpose of this study was to determine the effectiveness of a hand tracker to designate targets using a three-dimensional (3-D) map. Three variables were manipulated: 1) hand tracker active volume, 2) aiding technique, and 3) target density. There were three different volumes (large, medium and small) in which the hand tracker operated. Each volume represented cockpit space in which hand tracker movements correlated to cursor movements on the screen. Two aiding techniques were referred to as contact aiding and proximity aiding. Contact aiding consisted of a color shade change to the target when the cursor penetrated the target volume. Proximity aiding consisted of an algorithm that selected the target closest to the cursor and thus changed its color shade. Two target densities, high (16 targets) and low (8 targets), were used. Speed and accuracy were measured in the designation of targets using a hand tracker. Results showed that proximity aiding in the medium volume space yielded the best performance.

© All rights reserved Solz et al. and/or Human Factors Society

 
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Changes to this page (author)

19 Feb 2010: Modified
26 Jun 2007: Added
26 Jun 2007: Added

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May 20

The moment clients realize that revisions are not an all-you-can-eat buffet, suddenly they realize they are not hungry.

-- Lester Beall

 
 

Featured chapter

Read the fascinating history of Wearable Computing, told by its father, Steve Mann

Read Steve's chapter !

 
 

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