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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,
  `% J9 z. r! i4 J3 Y  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.
4 Z3 t  w0 W4 W" Q+ c  Loads are processed by each operator for the following time:
! ^( y  e9 d% p2 Z" F" T) J/ F  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
, A# W/ F5 w5 @+ r/ h. x/ r  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.! L5 C  u" d0 s+ o
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.4 E* j5 Y' }+ g. u/ p. e3 y
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.
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9 g" v% \) ~/ ~# e1 o问题:/ }. G7 a2 ^9 T& M2 H1 K5 _) }
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. x9 n7 V$ a  ]: Z: M" u
move into Q_wait /*Capacity is infinte*// |) _# L; \5 u" V' x
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/" `; H: _1 Q% r% q& r/ B4 t5 s
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send to P_B
4 ?1 r/ ?' f  }5 Q" ^' Xend) m, e+ Q, w9 r" m. `) p% G

+ K# t9 ?  t* n. E% GP_B and P_C is similar5 t4 f  m  K3 w3 i! T% r9 H
triangular 30,60,90 min
! S' A; r3 u( C: G0 bu 60,30 min
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9 Z5 [, {  g* Z$ ]2 P+ yin P_C, you need to send to die.
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5 R2 k/ F. y3 p  X  L  ?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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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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