Relative impact of early versus late design decisions in systems development

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Tan, James J.Y.
dc.contributor.author Otto, Kevin N.
dc.contributor.author Wood, Kristin L.
dc.date.accessioned 2017-10-15T20:39:34Z
dc.date.available 2017-10-15T20:39:34Z
dc.date.issued 2017-08
dc.identifier.citation Tan , J J Y , Otto , K N & Wood , K L 2017 , ' Relative impact of early versus late design decisions in systems development ' Design Science , vol 3 , e12 . DOI: 10.1017/dsj.2017.13 en
dc.identifier.issn 2053-4701
dc.identifier.other PURE UUID: 73109b92-49ff-4b45-aed2-0798e5c1673a
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/relative-impact-of-early-versus-late-design-decisions-in-systems-development(73109b92-49ff-4b45-aed2-0798e5c1673a).html
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/15355803/Tan_etal_DesSci_3_e12.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/28216
dc.description.abstract To better understand the impact of early versus late design decisions, a study was undertaken on the root causes of missed requirements in new product development and their impact on development cost through rework activities. The context is the industrial development of unmanned aerial vehicles. The aim is to understand the occurrence rate of missed requirements, their root causes, and their relative impact. A quantitative approach of counting requirements changes and using engineering documentation enabled traceability from observation back to root cause origin. The development process was partitioned into sequential program segments, to categorize activities to before and after concept and design freeze. We found that there was a significant difference in the rate of design defects arising before and after concept freeze; and found there was a significantly higher number of corrective activities required for design defects arising earlier before concept freeze. The revision rate of concept phase decisions was over 50%, and the rework multiplier if detected late was over 10X. In combination, design decisions made before design freeze accounted for 86% of the total expected program cost, and 34% was determined before concept freeze. These results quantify and support the anecdotal 80-20 impact rule for design decisions. en
dc.format.extent 27
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Design Science en
dc.relation.ispartofseries Volume 3 en
dc.rights openAccess en
dc.subject.other 214 Mechanical engineering en
dc.title Relative impact of early versus late design decisions in systems development en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Singapore University of Technology and Design
dc.contributor.department Department of Mechanical Engineering
dc.subject.keyword requirements
dc.subject.keyword root cause analysis
dc.subject.keyword conceptual design
dc.subject.keyword empirical study
dc.subject.keyword 214 Mechanical engineering
dc.identifier.urn URN:NBN:fi:aalto-201710157076
dc.identifier.doi 10.1017/dsj.2017.13
dc.type.version publishedVersion


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