By Edward Yourdon
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Additional info for Analisis Estructurado Moderno Spanish
There are at least ﬁve ways that good systems engineering adds value. First, deﬁning the problem clearly and well and then ﬁnding a good solution that balances the needs of varying segments of stakeholders and the multiple engineering disciplines. Second, systems engineers serve as a communication interface among stakeholders and engineers. Finding showstoppers that are present in the design and getting them ﬁxed is the third value adding element. Finding design errors early when these errors are still relatively cheap to ﬁx is the fourth.
The behavioral model should be ﬁnished and exercised as part of the allocated architecture; see Chapter 9. Each of these three models must be integrated to deﬁne the three architectures properly. 10 ). 11 shows an organization chart representation of a physical architecture of the F-22 ﬁghter. Note that this physical architecture includes more than the F-22; the training and support systems are included as well. 12. 12, are invaluable because they serve as an excellent communication medium; communication is one of the most important functions of systems engineers.
Nonreactive precedented vs. unprecedented safety-critical vs. not safety-critical high reliability vs. not high reliability high precision vs. not high precision human-centric vs. nonhuman high durability vs. not high durability Yet the process described in this book should work for all ‘‘man-made’’ systems, with some tailoring. Clearly, a great deal more engineering and systems engineering is required for an unprecedented system (the Shuttle) than for a precedented one (new automobile). Magee and de Weck  propose a two-dimensional classiﬁcation structure of systems that was derived from the work of several other authors.