Chapter3 - Chapter 3 General Principles in Simulation...

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Unformatted text preview: Chapter 3 General Principles in Simulation Banks, Carson, Nelson & Nicol Discrete-Event System Simulation ٢ Concepts In Discrete-Event Simulation ¡ System ¢ A collection of entities (people and machines..) that interact together over time for one or more goals ¡ Model ¢ An abstract representation of a system, usually containing structural, logical or mathematical relationship that describe a system in term of state, entities and their attributes , sets, processes,... ¡ System state ¢ A collection of variables in any time that describe the system ¡ Entity ¢ Any object or component in system that require explicit representation (server, customer,...) ¡ Attributes ¢ The properties of a given customer ¡ List ¢ A collection of associated entities , ordered in some logical fashion (FIFO, priority,...) ٣ Concepts In Discrete-Event Simulation (cont.) ¡ Event ¢ An instantaneous occurrence that changes the state of a system ¡ Event Notice ¢ A record of a event to occur at the current or future time (type and time) ¡ Event List ¢ FEL (future event list) ¡ Activity (unconditional wait) ¢ A duration time of specified length (service time or interarrival time,... ) ¢ Deterministic, Statistical and functional ¡ Delay (conditional wait) ¢ A duration of time of unspecified indefinite length, which is not known until it ends (customer delay in waiting line) ¡ Clock ¢ A variable representing simulated time...
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This note was uploaded on 11/13/2011 for the course IE 230 taught by Professor Akbari during the Spring '11 term at Amirkabir University of Technology.

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Chapter3 - Chapter 3 General Principles in Simulation...

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