Reuse in Systems Engineering
Reuse in systems engineering is a frequent but poorly understood phenomenon. Nevertheless, it has a significant impact on system development and on estimating the appropriate amount of systems engineering effort with models like the Constructive Systems Engineering Cost Model (COSYSMO). Practical ex...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
Institute of Electrical and Electronics Engineers (IEEE)
2012
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| Online Access: | http://hdl.handle.net/1721.1/69897 |
| _version_ | 1826189643538759680 |
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| author | Wang, Gan Valerdi, Ricardo Fortune, Jared |
| author2 | Massachusetts Institute of Technology. Engineering Systems Division |
| author_facet | Massachusetts Institute of Technology. Engineering Systems Division Wang, Gan Valerdi, Ricardo Fortune, Jared |
| author_sort | Wang, Gan |
| collection | MIT |
| description | Reuse in systems engineering is a frequent but poorly understood phenomenon. Nevertheless, it has a significant impact on system development and on estimating the appropriate amount of systems engineering effort with models like the Constructive Systems Engineering Cost Model (COSYSMO). Practical experience showed that the initial version of COSYSMO, based on a “build from the scratch” philosophy, needed to be refined in order to incorporate reuse considerations that fit today's industry environment. The notion of reuse recognizes the effect of legacy system definition in engineering a system and introduces multiple reuse categories for classifying the four COSYSMO size drivers-requirements, interfaces, algorithms, and operational scenarios. It fundamentally modifies the driver counting rules and updates its definition of system size. It provides an enabling framework for estimating a system under incremental and spiral development. In this paper, we present: 1) the definition of the COSYSMO reuse extension and the approach employed to define this extension; 2) the updated COSYSMO size driver definitions to be consistent with the reuse model; 3) the method applied to defining the reuse weights used in the modified parametric relationship; 4) a practical implementation example that instantiates the reuse model by an industry organization and the empirical data that provided practical validation of the extended COSYSMO model; and 5) recommendations for organizational implementation and deployment of this extension. |
| first_indexed | 2024-09-23T08:18:51Z |
| format | Article |
| id | mit-1721.1/69897 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:18:51Z |
| publishDate | 2012 |
| publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| record_format | dspace |
| spelling | mit-1721.1/698972022-09-23T12:13:01Z Reuse in Systems Engineering Wang, Gan Valerdi, Ricardo Fortune, Jared Massachusetts Institute of Technology. Engineering Systems Division MIT Sociotechnical Systems Research Center Valerdi, Ricardo Valerdi, Ricardo Reuse in systems engineering is a frequent but poorly understood phenomenon. Nevertheless, it has a significant impact on system development and on estimating the appropriate amount of systems engineering effort with models like the Constructive Systems Engineering Cost Model (COSYSMO). Practical experience showed that the initial version of COSYSMO, based on a “build from the scratch” philosophy, needed to be refined in order to incorporate reuse considerations that fit today's industry environment. The notion of reuse recognizes the effect of legacy system definition in engineering a system and introduces multiple reuse categories for classifying the four COSYSMO size drivers-requirements, interfaces, algorithms, and operational scenarios. It fundamentally modifies the driver counting rules and updates its definition of system size. It provides an enabling framework for estimating a system under incremental and spiral development. In this paper, we present: 1) the definition of the COSYSMO reuse extension and the approach employed to define this extension; 2) the updated COSYSMO size driver definitions to be consistent with the reuse model; 3) the method applied to defining the reuse weights used in the modified parametric relationship; 4) a practical implementation example that instantiates the reuse model by an industry organization and the empirical data that provided practical validation of the extended COSYSMO model; and 5) recommendations for organizational implementation and deployment of this extension. BAE Systems Center for Systems and Software Engineering Massachusetts Institute of Technology. Lean Advancement Initiative 2012-03-30T18:32:36Z 2012-03-30T18:32:36Z 2010-08 2010-04 Article http://purl.org/eprint/type/JournalArticle 1932-8184 1937-9234 http://hdl.handle.net/1721.1/69897 Wang, Gan, Ricardo Valerdi, and Jared Fortune. “Reuse in Systems Engineering.” IEEE Systems Journal 4.3 (2010): 376–384. Web. 30 Mar. 2012. © 2010 Institute of Electrical and Electronics Engineers en_US http://dx.doi.org/10.1109/jsyst.2010.2051748 IEEE Systems Journal Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Institute of Electrical and Electronics Engineers (IEEE) IEEE |
| spellingShingle | Wang, Gan Valerdi, Ricardo Fortune, Jared Reuse in Systems Engineering |
| title | Reuse in Systems Engineering |
| title_full | Reuse in Systems Engineering |
| title_fullStr | Reuse in Systems Engineering |
| title_full_unstemmed | Reuse in Systems Engineering |
| title_short | Reuse in Systems Engineering |
| title_sort | reuse in systems engineering |
| url | http://hdl.handle.net/1721.1/69897 |
| work_keys_str_mv | AT wanggan reuseinsystemsengineering AT valerdiricardo reuseinsystemsengineering AT fortunejared reuseinsystemsengineering |