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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,0 ~$ T; F: S3 t5 E3 A6 h
  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.
+ M/ H# G. Z; y0 u  Loads are processed by each operator for the following time:
  q& G; Y: s* l1 n+ C  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.- V8 Y2 X0 V( s
  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.6 R7 F" r( r0 ?! n' m8 t, ~" `
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
& |* n2 H2 y: P( vSend 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:1 b8 L+ `  I+ _6 W
After running the model for 10,000 days, what was the average number of loads in each process?
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& M% G( [3 n+ @9 j# Q不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving0 `) t, w' ?1 I+ f0 [& z. q8 K
move into Q_wait /*Capacity is infinte*/
" l/ M9 K4 \3 R' V- E4 omove into Q_process /*Single capacity*/
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7 b9 Q' O$ h* Ruse R_A for n 60,10 min /*Resource A*/3 d* d. v. J1 s+ }

" g, i' L# d; P  e' Rsend to P_B) z+ H) R" l+ V, l
end4 d# B  p- ^1 S$ R9 h; u
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P_B and P_C is similar
! Q' _0 q$ r/ [! A! g. z" [1 Btriangular 30,60,90 min. ]5 ^( F3 d: r
u 60,30 min
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0 M( E$ `5 [! W8 S4 C+ ?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.2 \  k% Y; x/ `9 X5 d' \
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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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