# prob 7 - What is Simulation Dr Bimal Kumar Mishra Maths...

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Dr. Bimal Kumar Mishra, Maths Group, BITS, Pilani What is Simulation?

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Dr. Bimal Kumar Mishra, Maths Group, BITS, Pilani Simulation Is ... Very broad term, set of problems/approaches Generally, imitation of a system via computer Involves a model validity? Don’t even aspire to analytic solution – Don’t get exact results (bad) – Allows for complex, realistic models (good) Approximate answer to exact problem is better than exact answer to approximate problem Consistently ranked as most useful, powerful of mathematical-modeling approaches
Dr. Bimal Kumar Mishra, Maths Group, BITS, Pilani Some Application Areas Manufacturing scheduling, inventory Staffing personal-service operations Banks, fast food, theme parks, Post Office, ... Distribution and logistics Health care emergency, operating rooms Computer systems Telecommunications Military Public policy Emergency planning Courts, prisons, probation/parole

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Dr. Bimal Kumar Mishra, Maths Group, BITS, Pilani Computer Simulation Methods for studying a wide variety of models of real-world systems – Use numerical evaluation on computer – Use software to imitate the system’s operations and characteristics, often over time In practice, is the process of designing and creating computerized model of system and doing numerical computer-based experiments Real power application to complex systems Simulation can tolerate complex models
Dr. Bimal Kumar Mishra, Maths Group, BITS, Pilani Advantages of Simulation Flexibility to model things as they are (even if messy and complicated) Avoid “looking where the light is” (a morality play): You’re walking along in the dark and see someone on hands and knees searching the ground under a street light. You: “What’s wrong? Can I help you?” Other person: “I dropped my car keys and can’t find them.” You: “Oh, so you dropped them around here, huh?” Other person: “No, I dropped them over there.” (Points into the darkness.) You: “Then why are you looking here?” Other person: “Because this is where the light is.”

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