EIN6227Justification(OLD)

EIN6227Justification(OLD) - Outreach Engineering Management...

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Outreach Engineering Management EIN 6227: Lecture 5 Improvement Justification Joseph C. Hartman Industrial and Systems Engineering University of Florida Gainesville, FL OEM 2009 Orlando, FL, Fall 2008
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Outreach Engineering Management Listened to customer Converted desires to process specs Designed our process Monitored the process Identified improvements to process Justify improvements! (Then implement!) Time to Justify!
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Outreach Engineering Management Reviewed many techniques to study and improve processes. Before implementation, must verify that improvements are worthy (economically!) Introduced simulation as a way to test improvements in a lab (simulated world). First, let’s revisit simulation. Time to Justify!
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Industrial and Systems Engineering Simulation Process simulation is an approach to building a logical model of a real process, and experimenting with the model to obtain insight about the behavior of the process or to evaluate the impact of changes in assumptions or potential improvements to it.
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Outreach Engineering Management A simulation is literal: one simulates, or generates, one possible future outcome -- such as a cash flow diagram -- and analyzes it. The process is repeated (numerous times) to gain an understanding of what is expected to happen. Accomplished through gathering performance measures from the various runs Statistical analysis of the data provides insight Simulation
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Outreach Engineering Management Monte Carlo simulation is a class of simulation techniques that requires outcomes to be generated for various parameters described by probability distributions. Discrete Event (Process) Simulation is a class of simulation techniques that describes the movement of entities in systems at specific points in time. Simulation
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Outreach Engineering Management Most information comes from a good process map: Process Flow Travel and Processing Times Arrival Rates Capacities If data is random, must have estimates of probability distributions Simulation Inputs
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Outreach Engineering Management Revisit our Bank example. Customer enters a bank and queues for service. When available, they approach the clerk for service, which occurs in two steps: Customer fills out their paperwork Clerk then performs duties Customer exits the bank and the next customer approaches the clerk for service. Simulation Example
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Outreach Engineering Management Example: Bank Operations Exit Front of Queue? Wait Yes No Processing Fill out Forms Enter Wait Verification
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Outreach Engineering Management Example: Bank Operations Exit Front of Queue? Wait Yes No Processing Fill out Forms Enter Wait Verification A lot going on here!
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Outreach Engineering Management Process Flow Simulation Example Customers Enter Customers Queue Self Process Order Process Customers Exit
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Outreach Engineering Management Process Flow Necessary Data Arrival Rates Self Process Order Process Processing Times Number of Transactions
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EIN6227Justification(OLD) - Outreach Engineering Management...

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