Reuse in Systems Engineering
Name
Wang-2010-Reuse in Systems Eng.pdf
Size
914.48 KB
Format
Adobe PDF
Checksum (MD5)
67f157d7ed80414791d8e875c2360021
Author(s)
Wang, Gan
Valerdi, Ricardo
Fortune, Jared
Date Issued
August 2010
Journal
IEEE Systems Journal
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
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
Version
Final published version
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Engineering Systems Division
MIT Sociotechnical Systems Research Center
Terms of Use
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.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1109/jsyst.2010.2051748
