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ReferencesNavigation arrowAuthorsNavigation arrowDavid H. Merwin

Publication statistics

Pub. period:1990-1994
Pub. count:4
Number of co-authors:6



Co-authors

Number of publications with 3 favourite co-authors:

Christopher D. Wickens:3
Michelle A. Vincow:1
John F. Larish:1

 

 

Productive colleagues

David H. Merwin's 3 most productive colleagues in number of publications:

Christopher D. Wic..:75
Brian P. Dyre:11
Darryl G. Humphrey:3
 
 
 
Jun 19

“ ... there are no simple 'right' answers for most web design questions (at least not for the important ones). What works is good, integrated design that fills a need--carefully thought out, well executed, and tested. ”

-- Steve Krug, Don't Make Me Think, p. 136

 
 

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David H. Merwin

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Publications by David H. Merwin (bibliography)

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1994
 
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Merwin, David H., Vincow, Michelle A. and Wickens, Christopher D. (1994): Visual Analysis of Scientific Data: Comparison of 3D Topographic, Color, and Gray Scale Displays in a Feature Detection Task. In: Proceedings of the Human Factors and Ergonomics Society 38th Annual Meeting 1994. pp. 240-244.

“Several display techniques were compared for representing scientific data in the context of a feature detection task. The data sets were rendered on a Silicon Graphics workstation using four display formats: linearized gray scale; rainbow scale; reduced hue (blue-green-yellow-white) scale; and a 3D-topographic formal viewed in stereo. The task involved searching for features that were embedded in scientific data sets consisting of two spatial and one scalar variable. Data sets were drawn from three scientific domains: Landsat, medical MRI, and global atmospheric data bases. Two types of features were embedded within the data sets: circular (blob-like) discontinuities, and linear (cliff-like) discontinuities. Results showed a general advantage for the gray scale, and a marked disadvantage for the 3D-topographic format in both accuracy and response latency. Performance in the two color scale formats was intermediate, with the reduced hue scale supporting faster, if not more accurate performance than the full rainbow scale. Performance differences were found across data base domains, as well. Directions for future research are discussed.”

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

1993
 
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Merwin, David H. and Wickens, Christopher D. (1993): Comparison of Eight Color and Gray Scales for Displaying Continuous 2D Data. In: Proceedings of the Human Factors and Ergonomics Society 37th Annual Meeting 1993. pp. 1330-1334.

“The use of various dimensions of color to encode continuous data has become commonplace with the advent of sophisticated computing hardware and software. Applications users can choose from a variety of color pallets as well as create their own for viewing digitized data sets. A primary HCI question emerging from this expanded availability of color for data display is how best to map color dimensions to data dimensions for various applications. The current study examined a subset of the perceptual/cognitive processes underlying pattern recognition tasks, whose efficacy could be affected by the nature the color scale used to visualize the data being viewed. Three types of observers' judgments were examined: absolute discrimination of a value; relative judgment of the difference between two values; and a rank order judgment of 4 values. These values were expressed in the color of a specific region in images displayed using eight different color and gray scales. Preference ratings were collected for the color scales. Grey scales were best for rank ordering tasks, while a blue-green-yellow scale proved superior for an absolute independent task. Scale preferences did not necessarily agree with performance. Implications of the findings and future research are discussed.”

© All rights reserved Merwin and Wickens and/or Human Factors Society

1991
 
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Merwin, David H. and Wickens, Christopher D. (1991): 2-D vs. 3-D Display for Multidimensional Data Visualization: The Relationship Between Task Integrality and Display Proximity. In: Proceedings of the Human Factors Society 35th Annual Meeting 1991. pp. 388-392.

“The current study explores the relationship between the display representation of a multidimensional data base (separated vs. integrated) and the information processing demands of different types of tasks. Subject answered a range of questions about a complex economic data base while viewing either a 2-D or 3-D (perspective) display of subsets of the data. Animated vs. static representations of dynamic data were also examined. The 3-D display supported better performance than did the 2-D display on the more integrative questions, while no difference between formats was found for questions demanding focused attention. The 3-D display also supported a better visual model of the data space, but did not improve subjects' ability to verbalize the rules underlying this space. Animation did not provide a better means for understanding change information than did the static presentation mode. Implications for the design of data visualization display interfaces are discussed.”

© All rights reserved Merwin and Wickens and/or Human Factors Society

1990
 
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Merwin, David H., Dyre, Brian P., Humphrey, Darryl G., Grimes, John and Larish, John F. (1990): The Impact of Icons & Visual Effects on Learning Computer Databases. In: D., Woods, and E., Roth, (eds.) Proceedings of the Human Factors Society 34th Annual Meeting 1990, Santa Monica, USA. pp. 424-428.

“Improvements in computer graphics systems have made icons and visual effects available for use in designing database interfaces. However, little research has been reported about the impact of icons and visual effects on performance measures such as item selection time and recall of the databases. The present study examined the effect of icons and visual effects on item selection time and recall of a hierarchical database structure. Information in the database was represented by either a text label or a combined icon-text label. In addition, three types of visual effects during transition between menu screens were examined: instantaneous change, zoom open from the previous screen, and dissolve into the next screen. Both the item representation and screen transition manipulations were examined between subjects. Subjects were required to reach goals by selecting items from the various menus in the database. Processing time per menu screen and recall of the database were measured for each subject. Both the type of representation (icon-text vs. text alone) and the type of transition between menus (zoom, instantaneous change or dissolve) were found to affect subjects' ability to recall the structure of the database. Furthermore, no similar effects on item selection time were found for either manipulation. These results suggest that icons and visual effects can facilitate recall of hierarchical databases without increasing traversal time. In addition, the results suggest that indiscriminate use of some visual effects (dissolve) can impair learning of computer databases.”

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

 
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26 Jun 2007: Modified
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URL: http://www.interaction-design.org/references/authors/david_h__merwin.html

Publication statistics

Pub. period:1990-1994
Pub. count:4
Number of co-authors:6



Co-authors

Number of publications with 3 favourite co-authors:

Christopher D. Wickens:3
Michelle A. Vincow:1
John F. Larish:1

 

 

Productive colleagues

David H. Merwin's 3 most productive colleagues in number of publications:

Christopher D. Wic..:75
Brian P. Dyre:11
Darryl G. Humphrey:3
 
 
 
Jun 19

“ ... there are no simple 'right' answers for most web design questions (at least not for the important ones). What works is good, integrated design that fills a need--carefully thought out, well executed, and tested. ”

-- Steve Krug, Don't Make Me Think, p. 136

 
 

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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