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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,! F: r5 t. J4 H' v
  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.
1 C" k9 C6 ]- I  Loads are processed by each operator for the following time:& p8 P: u6 L3 E# E, R. X1 i
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
* b8 G% c  x% r9 k2 Z: A" y  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.
' f* s0 _# r. e# R  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
/ ~0 @, F/ a4 X: k* FSend 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:0 j9 O  h: U0 b- g2 }4 A6 U8 h
After running the model for 10,000 days, what was the average number of loads in each process?8 ?# n/ w/ x% F; K+ C4 _1 x

: C7 V. q% [# h. M, F0 [# e不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving8 ~/ q' k# k  i  k; y  C1 z  \8 A
move into Q_wait /*Capacity is infinte*/" E6 l$ M6 s$ Y) ?$ g( h
move into Q_process /*Single capacity*/
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' M" D8 M' k9 U/ muse R_A for n 60,10 min /*Resource A*/2 N3 B% ]% D  E: m+ j) l  Y
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send to P_B
' l& J3 y. `6 t: ]2 Rend
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1 L6 [# }2 \7 DP_B and P_C is similar
; Q/ B8 d7 E6 X3 K# }# wtriangular 30,60,90 min
& O9 T! `1 I  r) `u 60,30 min6 e% I$ T5 ~( c+ A5 z4 m" \1 ]
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9 W6 ^3 J9 W) P( ]& U. Tin 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." M1 |- ]* W! [, \7 R
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* w1 ^7 O4 N$ f  M; ^1 ]8 I: BRemember 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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