The Concepts of a System. System: is any collection of interacting elements that operate to achieve some goal. A Factory System. Customer Orders. Production Control Dept. Raw Materials. Purchasing Dept. Fabrication Dept. Shipping Dept. Finished Product. System Boundary.
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System: is any collection of interacting elements that operate to achieve some goal.
A Factory System
Problem Type Given To Find
Analysis Input, System Output
Synthesis Input, Output System
Instrumentation System, Output Input
A system can be described in terms of objects (entities), attributes, events, activities, and processes. Very important in this description is the depiction of time.
ABSTRACT (MATHEMATICAL) OR PHYSICAL MODELS
STATIC OR DYNAMIC (ABSTRACT OR PHYSICAL) MODELS
ANALYTICAL OR NUMERICAL (STATIC OR DYNAMIC) MATHEMATICAL MODELS
LINEAR OR NONLINEAR (STATIC OR DYNAMIC) MATHEMATICAL MODELS
STABLE OR UNSTABLE MATHEMATICAL MODELS
STEADY-STATE OR TRANSIENT MATHEMATICAL MODELS
DESCRIPTIVE OR PRESCRIPTIVE (NORMATIVE) MODELS
Two types of simulation exist with respect to the way the model is driven:
1. The mathematical equations that constitute the model of the motion of a missile can be solved analytically to predict system behavior.
2. Evaluation of a definite integral by means of a stochastic process (Monte Carlo Simulation).
3. Generation of pseudo-random numbers on a computer.
4. Simulation is normally used in this case.