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[求助] 本人初学auto mod,有一道题目希望大家赐教

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发表于 2009-10-3 15:08:34 | 显示全部楼层 |阅读模式
刚刚开始学auto mod,这道题目搞不明白,希望大家看看 题目是这样的,
6 k5 l( h% Z' G5 m( l2 J. g; [8 n; j  Create a new model containing three independent processes, each with one operator. In each process, loads first move into an infinite capacity waiting queue, then into a single-capacity processing queue.' v' C5 W  k  _9 E8 p- U0 v
  Loads are processed by each operator for the following time:% `5 ?" U6 [; x# }- V
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.# x% _  j1 u$ ?. t( E4 Q
  Worker_B does the job according to a triangular distribution with a min of 30 mins, most likely value of 60 mins, and a max of 90 mins.5 x6 Z. ~- V- @/ v: G! @
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.9 M$ [) k* I7 ]) k( f! V3 J
Send loads to each pocess at the same rate (an exponentially distributed inter-arrival time with a mean of 68 mins) to understand the difference in the processing times of the three workers.
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问题:* Q/ _6 v: a; V, P2 ?; i! g
After running the model for 10,000 days, what was the average number of loads in each process?0 k, t6 L- ~, x9 M' n+ g' H

2 I1 _  Y, y$ W8 c; i不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
, u0 v$ t+ U! P4 jmove into Q_wait /*Capacity is infinte*/
2 w5 x% w7 B) e5 p" y7 B" jmove into Q_process /*Single capacity*/
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# I, v. o* ~& {- wuse R_A for n 60,10 min /*Resource A*/
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send to P_B
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P_B and P_C is similar
8 Q$ c; E$ ]! }1 Htriangular 30,60,90 min
2 k; q8 m; A8 T, k5 Bu 60,30 min2 A7 A; e0 B# L( k1 S  A
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in P_C, you need to send to die.
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.! M$ U" U2 t( h6 i# V% b( v
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; e9 i$ _, [  A, s, @Remember to turn off the animation before you run your model.

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 楼主| 发表于 2009-10-27 23:53:02 | 显示全部楼层
thanks...
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