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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,
+ h3 u* M/ r5 ?$ S, |) ~2 n  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.
' R6 i& Z* f9 [8 q) g, o4 n1 L  Loads are processed by each operator for the following time:: B; r" ~+ a& Q( m, q0 ?) j
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.! ?& p) {/ a" E% }, z
  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 y9 ^! P% C, d: |$ Q
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
+ f. S* a' {1 m0 H/ g5 USend 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:% `5 J+ l* v3 ?2 Y' b
After 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
* o, d6 ]. I- W, ]0 ?" G$ v1 wmove into Q_wait /*Capacity is infinte*/0 C" S1 `4 E" {" d) Z( Y
move into Q_process /*Single capacity*/' ]0 B- M" ?  u4 B2 m, N
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use R_A for n 60,10 min /*Resource A*/
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send to P_B/ g: O% q" B  R9 H/ q* _" t
end
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3 `8 Z6 H/ u' q  n/ [$ D/ L) aP_B and P_C is similar# Y: Y& ]0 J) s6 D
triangular 30,60,90 min8 R% i- x4 X7 n+ x- `1 B. P& c" [
u 60,30 min
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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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  m3 @' `( i6 _& x0 n( LRemember 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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