Process Analysis I

Process Analysis I - Process Analysis I Flow Time, Flow...

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1 Process Analysis I Flow Time, Flow Rate, Inventory
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2 The Customer in a Supermarket The amount of time spent in a supermarket by customers is of interest to the management. How would you go about finding the average time that customers spend in the store?
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3 From A Flow Unit’s Perspective Flow unit A bank transaction to be processed; a student; a shopper Three questions: On average, how many flow units pass through the process per unit time? On average, how much time does a typical flow unit spend within process boundaries? On average, how many flow units are within process boundaries at any given time? Average flow rate, flow time, inventory
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4 Operational Measures Flow rate (or throughput rate) R Flow time (or throughput time) T Inventory I Inventory turns (or turnover) = Flow Rate / Inventory Inventory  I [units] Flow rate  R   R [units/hr] ... ... ... ... ... Flow Time T [hrs]
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5 Little’s Law : Relating Operational Measures Inventory = Flow Rate x Flow Time I = R x T Turnover = Flow Rate / Inventory = 1/ T Inventory  I [units] Flow rate  R   R [units/hr] ... ... ... ... ... Flow Time T [hrs]
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6 The Changing Sources of Comp. Adv.
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This note was uploaded on 05/21/2011 for the course ISOM 111 taught by Professor Hu,inchi during the Spring '10 term at HKUST.

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Process Analysis I - Process Analysis I Flow Time, Flow...

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