Modelling+and+simulations

__ Modelling and simulations __ __﻿media type="custom" key="9248086"__ A model is produced to represent a real situation using the variables and the relationships between the variables. When testing a model, typical inputs are used and processed to check if the output actually is closely aligned to the real situation.

A simulation uses the model and by accepting a range of inputs, processes the data and outputs based on the variables and their relationships. The inputs may or may not ever occur in reality. The outcomes of various "what if" situations are produced by processing the various inputs. Some of these situations reflect what would happen under normal circumstances. Other inputs can be used to predict results in situations that in reality are unlikely to occur.

Example: The question is when is a "flight simulator" a model and when is a "flight simulator" actually a simulator? The name is confusing. A "flight simulator" is a model is created by a company and is programmed with the variables and relationships to fly a particular kind of plane under various conditions. The variables, relationships and sample input are collected from real situations or what is perceived to be the real situation. This is the model. When a trainee actually uses the "flight simulator" and reacts to the various situations that are presented to them during the flight simulation, then the reactions of the trainee are inputs into the model (IT system) that determine the output of the flight simulator (how well the simulated plane takes off, flies, lands). The trainee receives feedback from the flight simulator how well they flew the plane compared to what the model has stored as the ideal result. (reference occ Barbara Stefanics)

Helpful links: @http://proto-knowledge.blogspo...etween-simulation.html http://www.differencebetween.c...ing-and-vs-simulation/