Hw2Soln - Homework#2 Solutions Verbal Event Graphs 131...

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Homework #2 Solutions Verbal Event Graphs 131 - Spring08

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Initialize Run Customer enters Start Service Customer Leaves Ta Any server idle? Customers Waiting? Ts 1. Three identical servers working on the same queue. Problem 1
Initialize Run Type 1 Customer enters Start Type 1 Service Type 1 Customer Leaves Ta1 Any Type 1 server idle? Customers Waiting? Ts1 Type 2 Customer enters Start Type 2 Service Type 2 Customer Leaves Ta2 Any Type 2 server idle? Customers Waiting? Ts2 2. Two different kinds of servers working on two different queues with separate arrival patterns. Problem 2

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t a2 = time between type 2 customer arrivals t s = time to service a customer t a1 = time between type 1 customer arrivals Customer 2 = low priority Customer 1 = high priority Initialize The RUN Customer START1s Service Customer ENTER1s Queue 1 t a1 t s (Is server idle?) (Are T1 customers waiting in queue?) Customer START2s Service Customer LEAVEs System Customer ENTER2s Queue 2 t a2 t s (Is server idle and no type 1 Customers?)
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• Spring '08
• Leachman
• Trigraph, The Run, Type-token distinction

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