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Accession Number:
ADA590751
Title:
Tradespace and Affordability - Phase 1
Descriptive Note:
Final technical rept.
Corporate Author:
UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES
Report Date:
2013-07-09
Pagination or Media Count:
116.0
Abstract:
RT-46, Tradespace and Affordability, is a major SERC initiative within SE Transformation. It particularly focuses on the tradespace among a systems Ilities, or non-functional requirements. Its project name is ilities Tradespace and Affordability Project iTAP. The ilities differ from functional requirements in that they are systemwide properties that specify how well the system should perform, as compared to functions that specify what the system should perform. Adding a functional requirement to a systems specification tends to have an incremental, additive effect on the systems cost and schedule. Adding an ility requirement to a systems specification tends to have a systemwide, multiplicative effect on the systems cost and schedule. Also, ilities are harder to specify and evaluate, as their values vary with variations in the systems environment and operational scenarios. Phase 1 Objectives, Approach, and Results The major objectives of the initial 5-month Phase 1 activity have been To lay strong foundations for ITAP Phase 2, including knowledge of Department of Defense DoD ility priorities foundations and frameworks for ITAP analysis extension and tailoring of existing ITAP methods, processes, and tools MPTs and exploration of candidate Phase 2 pilot organizations for ITAP MPTs. To help develop an Ilities Tradespace and Affordability community of interest via collaborative activities with the DoD Engineering Resilient Systems ERS program and counterpart working groups in the International Council for Systems Engineering INCOSE, the Military Operations Research Society MORS, and the National Defense industry Association NDIA.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE
