Analysis Techniques For Man-Machine Systems Design

NATO UNCLASSIFIEDAC/243(Panel 8TR/7 - 26 -Volume 2ResourcesrequiredThe analysts must be experienced in the use of the technique and must have some understanding of the functioning ofsimilar systems. They also must have access to "commentators," "rcadcrs" and "experts" on requirements andconstraints.Programmes are available to run on personal and mainframe computers, to facilitate the generation of SADTrManalyses.Relative contributionUsers report the technique (or its U.S. DoD variant IDEF®) to be very effective for forcing the analyst to consider thecomplete system, and to be a good tool for communicating ideas, concepts, and problem areas.ApplicationsRoss & Schoman (1977) report the use of SADTr" in wide variety of developments, from real-time communicationsto process control. SADTLY has been used by the USAF in a number of major projects. and is a major tool in theGENSAW project being undertaken at USAF AANIRL, to develop tools for the computer simulation of operatortasks (Mills, 1988).Quality assurance considerationsQuality assurance considerations include the need to check the analysis for the inclusion of all requirements andconstraints. This is done through the recommended review and editing process, using other experts to comment on thework of the authors.Relationship to system performance requirementsThe technique can be related to functional requirements, but not to those involving timing or sequences.References and BibliographyI De Marco. T. (1979) Structured analysis and system snecification. New York: Yourdon Inc.2. Floyd, C. (1986). A comparative evaluation of system development methods. In: T.W. Olle, H.G. Soland, A.A.Verijn-Stuart (Eds.). Information systems design methods. Amsterdam: Elsevier-Science Publishers B.V.3. Lundeberg, M., Goldkuhl, G. & Nilson, A. (1981). Infornation systems development: A systems annropch.Englewood Cliffs, NJ.: Prentice Hall Inc.4. Marca, D.A., McGrowan, C.L. (1987). SADTr" - Structured analysis and design technique. New York:McGraw-Hill Book Co.5. McMenamin, SJ., & Palmer, J.F. (1989). Essential systems analysis. New York: Yourdon Press.6 Mills, R. (1988). The user-assisted GENeric Systems Analyst Workstation (GENSAW): Summary. Presentationto NATO AC/243 Panel-8/RSG.9,Wright-Patterson Air Force Base, Ohio: Aerospace Medical ResearchLaboratory.7. Price, C.P., & Forsyth, D.Y. (1982). Practical considerations in the introduction of requirements analysisNATO UNCLASSIFIED- 26 -