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oai:www.ideals.illinois.edu:2142/19780 2023-07-10 col_2142_5131 col_2142_10761 com_2142_5130 com_2142_10755 com_2142_234

(UMI)AAI9411669 eng http://hdl.handle.net/2142/19780 DeJong, Gerald F. Kim, Hyeonkyeong 2011-05-07T12:18:18Z 2011-05-07T12:18:18Z 10000-01-01 1993 Understanding people's commonsense knowledge about physical world is a fundamental problem in building intelligent systems. If this knowledge can be represented and used by computers, they can duplicate people's ability to understand and interact with the world. Qualitative physics is the attempt to capture and formalize this knowledge. An important aspect of qualitative reasoning is the ability to derive the possible behaviors of a given physical system from the structure of the system, using minimal initial information. This thesis investigates qualitative domain theories and reasoning techniques which will enable computers to analyze the qualitative behaviors of physical systems which include both mechanical mechanisms and fluids, such as internal combustion engines and hydraulic lift pumps. We have developed a domain theory which integrates richer models of mechanics, fluids, and geometry than previous research in qualitative physics. These theories and inference techniques are embodied in QSA, a program that produces possible behaviors of physical systems. Made available in DSpace on 2011-05-07T12:18:18Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9411669.pdf: 6835059 bytes, checksum: 9b80ccde0e54a7b95b330b53d8e3c920 (MD5) Previous issue date: 1993 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:39:23Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:16:34-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission ETDs are only available to UIUC Users without author permission U of I Only AAI9411669 Copyright 1993 Kim, Hyeonkyeong Computer Science Qualitative reasoning about fluids and mechanics text Computer Science Computer Science University of Illinois at Urbana-Champaign Dissertation Ph.D.