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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,
' {$ `# `* o; {. S8 b) {$ l* z: d  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.0 U6 x3 }: r& U$ K; k' b
  Loads are processed by each operator for the following time:
# \7 ~7 G2 L( e3 x) z6 R) B2 E  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
7 V3 N- |# h9 |  V  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.
- x! j+ O( Z9 n7 M' W5 D" G- Q. N  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.7 q- H9 F# p2 `+ u6 f
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.7 N3 |% `* H! W. P6 F

" }7 x9 o* b  B: Z' ?: I问题:
. b% x: j: p8 x: Q6 G; BAfter running the model for 10,000 days, what was the average number of loads in each process?
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5 {' V. A( N0 ^1 b) q不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
. }' c% d  C( ]: Z+ Q3 Gmove into Q_wait /*Capacity is infinte*/2 S& j2 x6 i' b( j' d/ h
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
# o; F) u" e$ B" ^+ i! S2 pend
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P_B and P_C is similar
; M9 j: K3 D4 T3 gtriangular 30,60,90 min
# O; Y! _5 h/ F# I( `; q* Bu 60,30 min9 [  O( j2 E5 u4 w) K5 s3 I, k
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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.
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+ \$ R9 s$ Q# `: S! ?& |  i/ @% R2 i. {/ I
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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