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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,% _3 ~$ I; j5 O! ]' ~
  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( U4 q5 ]  \' r2 z
  Loads are processed by each operator for the following time:! I% ]+ s( j% P1 c6 A# I
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.# @# c9 d$ }" D; i; \' e
  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.! C1 K: B# Y0 I" J2 a; G
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.1 _1 j5 j0 s) ]& I' {) i) v$ M+ _2 W
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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5 [3 v( Z0 w( Q! F' _: x- w问题:
# c  S1 G5 M( T3 fAfter 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, h, a  }- }$ ^1 ?8 N, i
move into Q_wait /*Capacity is infinte*/
, G! `* _' l2 Q- a( R8 omove into Q_process /*Single capacity*/
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9 ?: a, G" w2 kuse R_A for n 60,10 min /*Resource A*/
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send to P_B3 {0 m: I% ^# f) a) \9 K
end
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0 ?6 M% |5 m9 J! D( p$ t8 yP_B and P_C is similar: C# p+ n4 ^4 Z1 N, k
triangular 30,60,90 min/ r  z% l9 F0 q7 ^/ [1 X1 S
u 60,30 min
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in P_C, you need to send to die.
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1 V; d3 V+ U6 s; O# ~* N$ {; q6 UThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days./ g+ }$ h7 s. o) e( r+ 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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