Type of Document	Master's Thesis
Author	Mohageg, Michael F.
URN	etd-11292012-040128
Title	Differences in performance and preference for object-oriented vs. bit-mapped graphics interfaces
Degree	Master of Science
Department	Industrial Engineering and Operations Research
Advisory Committee	Advisor Name Title Snyder, Harry L. Committee Chair Muto, William H. Committee Member Williges, Robert C. Committee Member
Keywords	Interactive computer systems
Date of Defense	1989-03-01
Availability	restricted
Abstract This study used a standardized evaluation to compare two direct manipulation graphics interfaces. The Interfaces investigated were (1) object-oriented (vector) graphics and (2) bit—mapped graphics (object-oriented graphics interfaces are not to be confused with object-oriented programming or object-oriented data bases). Experienced and novice subjects performed objectively derived benchmark tasks appropriate for two-dimensional graphics packages. Both performance and preference data were collected. Task completion time, aborted attempts, learning effects, and errors constituted the performance measures. For the preference data, subjects completed questionnaires to rate the interfaces on both an absolute and a relative basis. Results indicate that the object-oriented graphics interface is superior to the bit-mapped interface. Both the performance and preference measures indicate that the object-oriented interface is better suited for manipulation of graphics.
Files	Filename       Size       Approximate Download Time (Hours:Minutes:Seconds)     28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access  LD5655.V855_1989.M635.pdf 8.05 Mb 00:37:15 00:19:09 00:16:46 00:08:23 00:00:42 next to an author's name indicates that all files or directories associated with their ETD are accessible from the Virginia Tech campus network only.

If you have questions or technical problems, please Contact DLA.