Theory of Systems (9-13-10)(3)

Theory of Systems (9-13-10)(3) - Systems Engineering

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Systems Engineering Theory of Systems: Some Basics We can't solve problems by using the same kind of thinking we used when we created them. --- Albert Einstein
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What is a System? Write down some definitions…
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Assemblage or combination of elements  forming complex, unitary whole  Any assemblage or set of correlated  members  Ordered assemblage of facts,  principles, or doctrines  Coordinated body of methods or a  complex plan, or procedures 
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Some Definitions of a System “…a set of interrelated components  working together  toward some  common objective or purpose “…an integrated set of interoperable elements, each with explicitly  specified and bounded capabilities, working synergistically to perform  value-added processing to enable a User to satisfy mission-oriented  operational needs in a prescribed operating environment with a  specified outcome and probability of success.” ( Whew! ) ( http://www.freetutes.com/systemanalysis/SA001_1.htm ) “…a set of things interconnected  in such a way that they produce their  own pattern of behavior  over time.” (Donella Meadows) “A set  of interrelated members  that are organized synergistically  so as  to produce a unitary identity .” (Hagar) A system is an entity which maintains its existence through the mutual  interaction of its parts. (Attributed to Ludwig von Bertalanffy)
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Give Some Examples of Systems Chair? Islam, Christianity, Buddhism? Weather (storm cell, hurricane,  tornado)? FedEx? Book? Junkyard? Heaps vs. Wholes
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Charactersitics & Classifications
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What Are the Constituents? Components : Operating parts; each component may assume one of several states. Also called holons . Attributes : Properties of components; characterize the system. Relationships : Links among components and attributes. Is anything missing? Environment : “Situation(s)” in which the system operates.
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Every entity in the set affects at least one other entity  in the set. Every entity in the set is affected by at least one other  entity in the set. The set  cannot  be split into two independent subsets  such that  no member of one subset affects any member of the other  subset, or that  no member of one subset is affected by any member of the  other subset. More briefly,
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Theory of Systems (9-13-10)(3) - Systems Engineering

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