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Eric E. Geiselman

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Publications by Eric E. Geiselman (bibliography)

1993

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Geiselman, Eric E. and Osgood, Robert K. (1993): Toward an Empirically Based Helmet-Mounted Display Symbology Set. In: Proceedings of the Human Factors and Ergonomics Society 37th Annual Meeting 1993. pp. 93-97.

“The helmet-mounted display (HMD) affords continuous availability of critical flight information independent of head orientation. With appropriate information presented on a HMD, aircraft control can be maintained regardless of where the pilot is looking. This research addresses the development of an empirically based HMD symbol set. Three attitude formats and three altitude formats were evaluated within a composite fixed-wing HMD symbology layout. The attitude formats varied in basic form and symbol compression ratio. Symbol compression ratio is the ratio of the angle represented by the symbol to the symbol's subtended visual angle. High symbol compression results in symbols which represent large angles, and therefore have slow rate-of-motion relative to their uncompressed counterparts. The altitude symbologies were formed of both vertical scale and dial formats and included vertical velocity indicators. Subjects performed a flight-path maintenance task within sessions of differing "real" horizon presence and orientation. The formats were evaluated under a task which was designed to require high-accuracy flight-path maintenance. This type of task is traditionally thought to require less symbol compression. The results showed that performance was influenced by the manipulation of the attitude symbology formats. The results also suggest that symbol compression may be advantageous.”

1992

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Geiselman, Eric E. and Osgood, Robert K. (1992): A Comparison of Three Attitude Display Symbology Structures during an Attitude Maintenance Task. In: Proceedings of the Human Factors Society 36th Annual Meeting 1992. pp. 1450-1454.

“The present study evaluated a new aircraft attitude display concept. The new symbology format, or Theta display, was developed by integrating the features of the conventional attitude/direction indicator (ADI) and head-up attitude reference display (HUD) into a single format. Number of trials to reach a specific performance criterion and tracking performance were collected as dependent variables on an attitude maintenance task. The results show that performance and training time were better with both the Theta display and the ADI than with the HUD. The findings support the hypothesis that an attitude display formed of the integration of ADI and HUD symbology will demonstrate a performance benefit over a pure HUD format.”

1990

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Eggemeier, F. Thomas, Granitz, Andrea B., Rogus, Timothy E. and Geiselman, Eric E. (1990): Development of Automatic Processing with Alphanumeric Materials. In: D., Woods, and E., Roth, (eds.) Proceedings of the Human Factors Society 34th Annual Meeting 1990, Santa Monica, USA. pp. 1357-1361.

“This research investigated the development of automatic processing with alphanumeric materials that are representative of those processed by operators of some complex information systems. According to automatic processing theory, consistently mapped (CM) components of complex skills can be automatized with extensive practice, such that they are performed rapidly and accurately with minimal effort. Experiment 1 compared the effects of 3200 training trials in a memory search paradigm with alphanumeric materials under CM and variably mapped (VM) conditions. Dissimilar target and distractor sets were used. The results were consistent with the development of automatic processing in the CM condition. Experiment 2 examined the effect of similar target and distractor sets on CM performance. The results of Experiment 2 indicate that target/distractor similarity significantly affected CM performance. Such similarity therefore represents an important factor to be considered in the design of training programs to support the development of automatic processing with complex alphanumeric materials.”

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