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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 }' p: }, G$ W2 v- L. T; A
  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.
. u. g3 S- T5 M  Loads are processed by each operator for the following time:
" {; z: }* U( ^# B+ R1 R6 |  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
* Q' A# d1 W/ L3 y$ H$ J, a  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.% K, f* v6 V" l! A0 z
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
; V, u: o1 z' M9 t& ^' L8 ESend 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:
  p) U7 J2 p% y  Q; w- h5 E& eAfter 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 arriving6 Y+ }$ ]  b* ~5 W5 K* G
move into Q_wait /*Capacity is infinte*/
+ A4 g6 C" x1 x/ Cmove into Q_process /*Single capacity*/+ R( {$ W! a# H. }8 d0 W

1 x7 ^: d/ x8 kuse R_A for n 60,10 min /*Resource A*/
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send to P_B
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( o# l! `+ d5 d) C0 v. sP_B and P_C is similar% Y# G1 Q& v. [& O# B! H2 m7 X
triangular 30,60,90 min" A5 N% U8 M( `& d) ]( H
u 60,30 min
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- z2 i* m9 b! win 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.! K0 W) r% @( T  k% r

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- [7 p  k& g3 k! d- x1 k- m# `7 sRemember 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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