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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,
2 ?5 N+ W+ B, b7 O- ]0 Y2 w  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.
. {" j, x" S, {7 L8 W0 `  Loads are processed by each operator for the following time:% b/ M3 B2 Q6 F; t6 u/ V
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.* B* ^) b# k2 @  J3 o# m- O" s" W
  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.0 \: K" Q$ s  Z! ~9 M/ A6 @2 T0 r
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
7 }+ V; v4 H9 Z0 qSend 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:
( {2 X/ H5 b5 \" CAfter running the model for 10,000 days, what was the average number of loads in each process?
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
( K6 w' l7 [/ r% r1 _* u, Ymove into Q_wait /*Capacity is infinte*/6 ?. R0 k( ?; n! d$ V6 V  I
move into Q_process /*Single capacity*/
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! T7 y! c! j$ A: Buse R_A for n 60,10 min /*Resource A*/
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  f3 p2 d) ]& d7 Rsend to P_B- [( B, D5 Z$ q- }, T
end
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P_B and P_C is similar* y" V; l: c* I# y7 p' V# U! x( v
triangular 30,60,90 min
# Y; s, T" M" C1 iu 60,30 min5 _7 Z  ]' D0 |
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: F! h% k9 }5 g: _. {5 Kin P_C, you need to send to die.2 |: w7 u) u3 @9 w- Q1 u2 r7 O
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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.0 L& [; C" l0 E1 ^

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; g: p8 z2 v$ y2 @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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