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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,9 G& c: [9 P/ E- E- K
  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.! {& W' o6 q* P$ h# W4 Y
  Loads are processed by each operator for the following time:4 l% I$ D4 f( Q$ {' A- C  b
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.: j; m  ^4 [# d5 V
  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.
, n- ]9 j& r5 W7 Q  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
  B; ~! I1 C( g8 S# T! kSend 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 |: @( N" I0 Q$ j# RAfter 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 arriving9 w2 O2 l/ E+ f+ I7 i" {3 t
move into Q_wait /*Capacity is infinte*/+ ~" b8 l9 o/ y3 @& M
move into Q_process /*Single capacity*/% i2 I+ a7 S* e( d  ]+ _6 a
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use R_A for n 60,10 min /*Resource A*/
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send to P_B4 W7 [* Z+ C( V' L
end
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P_B and P_C is similar9 L4 j, ~( a8 y$ ~# z
triangular 30,60,90 min, R8 _3 b* Z4 v- a3 v) A
u 60,30 min
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in P_C, you need to send to die.
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' u% D! f( i) KThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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2 h, E! L! y# w1 z& r: Z% PRemember 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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