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ReferencesNavigation arrowAuthorsNavigation arrowDavid C. Hartsock

Publication statistics

Pub. period:1987-1995
Pub. count:7
Number of co-authors:9



Co-authors

Number of publications with 3 favourite co-authors:

John M. Reising:7
Kristen K. Liggett:4
Thomas J. Solz:2

 

 

Productive colleagues

David C. Hartsock's 3 most productive colleagues in number of publications:

John M. Reising:12
Kristen K. Liggett:5
Thomas J. Solz:2
 
 
 
Jun 18

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David C. Hartsock

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Publications by David C. Hartsock (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

1993
 
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Liggett, Kristen K., Reising, John M., Beam, Douglas J. and Hartsock, David C. (1993): The Use of Aiding Techniques and Continuous Cursor Controllers to Designate Targets in 3-D Space. In: Proceedings of the Human Factors and Ergonomics Society 37th Annual Meeting 1993. pp. 11-15.

“The purpose of this study was to determine the effects of three variables on target designation tasks using three-dimensional (3-D) maps. Variable 1: two continuous control techniques, Variable 2: two aiding techniques, and Variable 3: two target densities. The two continuous controllers used were an ultrasonic hand tracker and a joystick. The two aiding techniques were referred to as simple and enhanced aiding. Simple aiding consisted of a color change to the target when the cursor penetrated the target volume. Enhanced aiding consisted of an algorithm (Osga, 1991) that "pulled" the cursor to the closest target and then changed its color. The two target densities were high (16 targets) and low (8 targets). Results showed that the hand tracker provided the best performance with respect to total target designation time. Enhanced aiding provided the best performance in terms of both total target designation time and percent errors. For the density variable, the common speed-accuracy trade-off was present -- the low density condition had faster total target designation times, but the high density had less percent errors.”

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

1992
 
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Liggett, Kristen K., Reising, John M. and Hartsock, David C. (1992): The Use of a Background Attitude Indicator to Recover from Unusual Attitudes. In: Proceedings of the Human Factors Society 36th Annual Meeting 1992. pp. 43-47.

“The purpose of this study was to evaluate various cues on a background display format that depicted attitude information. A combined head-down display format was evaluated where the central rectangular area focused on tactical information and the background border presented attitude information. The attitude information, in essence, framed the tactical display format. A comparison was conducted among variations of the original background attitude indicator (BAI) created by General Dynamics personnel. Three types of cues were investigated: color shading, color patterns, and pitch lines with numbers. These cues were tested individually and in combination with one another. Results showed that in terms of initial input time, the combination of color shading and color patterns performed the best.”

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

1991
 
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Barthelemy, Kristen K., Reising, John M. and Hartsock, David C. (1991): Target Designation in a Perspective View, 3-D Map Using a Joystick, Hand Tracker, or Voice. In: Proceedings of the Human Factors Society 35th Annual Meeting 1991. pp. 97-101.

“The purpose of this study was to determine which of three cursor control techniques would provide the best means of designating targets in three-dimensional space. The three techniques tested were a joystick, a hand tracker, and voice. The current study showed that the quickest and most accurate target designations occurred when using the hand tracker, and when targets were positioned in the front most part of the three-dimensional volume.”

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

1989
 
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Reising, John M. and Hartsock, David C. (1989): Advanced Warning/Caution/Advisory Displays for Fighter Aircraft. In: Proceedings of the Human Factors Society 33rd Annual Meeting 1989. pp. 66-70.

“The primary purpose of this study was to determine the effectiveness of using color cathode ray tube (CRT) checklists and programmable multifunction switches to display warning/caution/advisory (W/C/A) information. This study compared three different display formats on speed and accuracy of recognition and execution of emergency procedures. The following three different W/C/A formats were tested: 1) Abbreviated title of the emergency written on a CRT [e.g., ELEC SYS/MAIN GEN], with the pilot using his knee pad checklist to complete the required steps, 2) Complete title with the checklist shown on a CRT [e.g., MAIN GENERATOR FAILURE/ELEC RESET SWITCH-DEPRESS], and 3) Complete title with the checklist plus the pictorial switch layout [i.e., CRT showing location of switch to be pressed]. Results showed that there is a definite advantage in using a CRT W/C/A checklist. Event time for the Abbreviated Title/Manual Checklist was significantly longer than either the Complete Title/CRT Checklist or the Complete Title/CRT Checklist with pictorials. However, there was no difference in event time between the latter two.”

© All rights reserved Reising and Hartsock and/or Human Factors Society

1987
 
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Zenyuh, John P., Reising, John M., McClain, James E., Barbato, Diana J. and Hartsock, David C. (1987): Advanced Head-Up Display (HUD) Symbology: Aiding Unusual Attitude Recovery. In: Proceedings of the Human Factors Society 31st Annual Meeting 1987. pp. 1067-1071.

“The head-up displays (HUD's) of today's fighter aircraft present numerous symbology formats to the pilot which are essential for successful performance of a variety of flight tasks from navigation to weapons delivery. One common element in all of these formats is the pitch ladder, designed to provide the pilot with aircraft attitude even in the absence of external visual cues. Unlike the head down attitude director indicator (ADI), the HUD pitch ladder's intent is to aid the pilot in recovering from an unusual attitude while staying head-up. The purpose of this research was to compare the relative effectiveness of two changes to current pitch ladder symbology designed to enhance the pilot's ability to recover from unusual attitudes -- the use of angled pitch bars versus standard straight pitch bars and multicolor versus the standard monochromatic symbology. The results showed that, in extreme unusual attitudes, the use of both the angled pitch bars and color contributed to better flight performance. In the non-extreme attitudes however, where the horizon line is always visible, the standard symbology was sufficient for recovery.”

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

 
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Page maintainer: The Editorial Team
URL: http://www.interaction-design.org/references/authors/david_c__hartsock.html

Publication statistics

Pub. period:1987-1995
Pub. count:7
Number of co-authors:9



Co-authors

Number of publications with 3 favourite co-authors:

John M. Reising:7
Kristen K. Liggett:4
Thomas J. Solz:2

 

 

Productive colleagues

David C. Hartsock's 3 most productive colleagues in number of publications:

John M. Reising:12
Kristen K. Liggett:5
Thomas J. Solz:2
 
 
 
Jun 18

“ Computer programs emerge as the outcome of complex human processes of cognition, communication and negotiation, which serve to establish the meaningful embedding of the computer system in its intended use context. ”

-- Floyd, 1992, p. 24

 
 

Featured chapter

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

Read Steve's chapter !

 
 

Latest books

The Social Design of Technical Systems: Building technologies for communities
by Brian Whitworth and Adnan Ahmad

 
Start reading

The Encyclopedia of Human-Computer Interaction, 2nd Ed.
by Mads Soegaard and Rikke Friis Dam

 
Start reading
 
 

Help us help you!

 
 
 
 
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