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oai:www.ideals.illinois.edu:2142/20986 2023-07-10 col_2142_5131 col_2142_10761 com_2142_5130 com_2142_10755 com_2142_234

Liu, Jane W.S. Feng, Wu-chun 2011-05-07T12:55:00Z 2011-05-07T12:55:00Z 10000-01-01 1996 Real-time systems have become increasingly important in a growing number of application domains such as telecommunication networks and multimedia. The tasks in such a real-time system must produce logically correct results by their deadlines. The correctness of such a system depends not only on the logical correctness of the results but also on the tasks completing by their deadlines. Many of today's real-time systems are built based on an estimate of the worst-case load level. When the load level of a real-time system temporarily exceeds its assumed worst-case load level, a transient overload occurs; some deadlines may be missed; and the performance of the system degrades. Under such an overload, the system must maintain an acceptable level of performance. The imprecise-computation technique is a way to deal with transient overloads. The technique is motivated by the fact that one can often trade off precision for timeliness. It prevents missed deadlines and provides graceful degradation during a transient overload. We illustrate its applicability by implementing an ATM congestion-control scheme. We also propose scheduling algorithms to handle real-time applications which contain tasks whose result quality is a function of both time and input quality. Made available in DSpace on 2011-05-07T12:55:00Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9702512.pdf: 7777431 bytes, checksum: 20164026bea613b8ba421018a8be56f6 (MD5) Previous issue date: 1996 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:47:42Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:21:33-05:00 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 9780591087505 AAI9702512 (UMI)AAI9702512 http://hdl.handle.net/2142/20986 eng Copyright 1996 Feng, Wu-chun Engineering, Electronics and Electrical Computer Science Applications and extensions of the imprecise-computation model text Computer Science Computer Science University of Illinois at Urbana-Champaign Dissertation Ph.D.