{"id":{"repo_id":"nps","oai_identifier":"oai:calhoun.nps.edu:10945/39996"},"canonical_url":"https://search.dev.ndltd.org/etd/nps/oai:calhoun.nps.edu:10945/39996","repository":{"repo_id":"nps","name":"Naval Postgraduate School","base_url":"https://calhoun.nps.edu/server/oai/request"},"display":{"title":"Reengineering real-time software systems","abstract":"The problem this thesis solves is how to reengineer existing real- time applications implemented without software engineering (SE) attributes; with poor modularity and robustness, and that are difficult to read and maintain. The real-time system chosen for this study was the Model-based Mobile robot Language (MML) used on the Yamabico- 11 mobile robot, which was implemented without SE attributes. The approach taken was reengineering MML with a focus on improving modifiability while preserving functionality. First we developed a systematic plan using manual static analysis, then we incrementally reengineered the application with thorough system-level testing. Code review was used to locate and remove dead code, and synonymous and redundant variables and functions (improving modifiability, readability and robustness). Call-hierarchy tracing was used to gain explicit module restructuring insight for tighter cohesion (improving modifiability, modularity, and readability). Global-variable tracing was used to improve module coupling by localizing and minimizing global variables (improving modularity, readability, and robustness). The results were as follows: A method for applying SE to existing real-time applications after- the-fact called 'Reengineering Real-Time Software Systems' was developed, which improves modifiability, modularity, robustness and readability. MML now has improved modularity and robustness, and is easier to read and maintain.","abstract_html":"The problem this thesis solves is how to reengineer existing real- time applications implemented without software engineering (SE) attributes; with poor modularity and robustness, and that are difficult to read and maintain. The real-time system chosen for this study was the Model-based Mobile robot Language (MML) used on the Yamabico- 11 mobile robot, which was implemented without SE attributes. The approach taken was reengineering MML with a focus on improving modifiability while preserving functionality. First we developed a systematic plan using manual static analysis, then we incrementally reengineered the application with thorough system-level testing. Code review was used to locate and remove dead code, and synonymous and redundant variables and functions (improving modifiability, readability and robustness). Call-hierarchy tracing was used to gain explicit module restructuring insight for tighter cohesion (improving modifiability, modularity, and readability). Global-variable tracing was used to improve module coupling by localizing and minimizing global variables (improving modularity, readability, and robustness). The results were as follows: A method for applying SE to existing real-time applications after- the-fact called 'Reengineering Real-Time Software Systems' was developed, which improves modifiability, modularity, robustness and readability. MML now has improved modularity and robustness, and is easier to read and maintain.","abstract_has_math":false,"creators":["Scott, Randall C."],"institution":"Monterey, California. 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The real-time system chosen for this study was the Model-based Mobile robot Language (MML) used on the Yamabico- 11 mobile robot, which was implemented without SE attributes. The approach taken was reengineering MML with a focus on improving modifiability while preserving functionality. First we developed a systematic plan using manual static analysis, then we incrementally reengineered the application with thorough system-level testing. Code review was used to locate and remove dead code, and synonymous and redundant variables and functions (improving modifiability, readability and robustness). Call-hierarchy tracing was used to gain explicit module restructuring insight for tighter cohesion (improving modifiability, modularity, and readability). Global-variable tracing was used to improve module coupling by localizing and minimizing global variables (improving modularity, readability, and robustness). The results were as follows: A method for applying SE to existing real-time applications after- the-fact called 'Reengineering Real-Time Software Systems' was developed, which improves modifiability, modularity, robustness and readability. MML now has improved modularity and robustness, and is easier to read and maintain."]},{"key":"dc:title","label":"Title","values":["Reengineering real-time software systems"]}]}],"canonical_facts":{"dc:contributor.advisor":["Kanayama, Yutaka"],"dc:contributor.department":["Department of Computer Science"],"dc:creator":["Scott, Randall C."],"dc:date":["September 1993"],"dc:date.accessioned":["2014-03-26T23:24:06Z"],"dc:date.available":["2014-03-26T23:24:06Z"],"dc:date.issued":["1993-09"],"dc:description.abstract":["The problem this thesis solves is how to reengineer existing real- time applications implemented without software engineering (SE) attributes; with poor modularity and robustness, and that are difficult to read and maintain. 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The results were as follows: A method for applying SE to existing real-time applications after- the-fact called 'Reengineering Real-Time Software Systems' was developed, which improves modifiability, modularity, robustness and readability. MML now has improved modularity and robustness, and is easier to read and maintain."],"dc:identifier.uri":["https://hdl.handle.net/10945/39996"],"dc:language.iso":["en_US"],"dc:publisher":["Monterey, California. Naval Postgraduate School"],"dc:rights":["This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States."],"dc:title":["Reengineering real-time software systems"],"dc:type":["Thesis"]},"updated_at":"2026-07-27T20:25:20Z"}