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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,: N; X2 P& E. `% R. 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.- `. k; S! A% A7 c- D
  Loads are processed by each operator for the following time:, U7 m6 C/ W$ z* c; V
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
1 a/ y9 k; F0 j9 ^) J6 w0 ^  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& p. D8 q( c/ o% Q, b
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
$ e0 d% p) p5 P( T% B3 D0 s0 u) ZSend 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:# C6 q- N1 k9 Q
After running the model for 10,000 days, what was the average number of loads in each process?
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1 D6 U: m6 }  l1 g8 K不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving/ b; y4 Z" R% l& G
move into Q_wait /*Capacity is infinte*/5 d8 E! p0 p9 I8 u) g
move into Q_process /*Single capacity*/& y) `0 k: ~+ J8 j% W) w7 O! b- `

1 y5 p  B& c/ {use R_A for n 60,10 min /*Resource A*/) t6 H' r  K. d7 D4 y9 Y1 M
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send to P_B0 V( ]: v- R8 I
end
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& v; Z. c# x1 ^) MP_B and P_C is similar
4 M$ \) ^" K8 T. \6 ^7 I+ `triangular 30,60,90 min1 E- g" @1 {2 `+ R& t% y
u 60,30 min/ ?; C6 m' ~$ |

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6 b* T- z4 V: I' U+ iin P_C, you need to send to die.
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  d) r3 ?- C" a; EThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.. N5 H# X/ A6 r! y

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, X( i; k5 Q( t# K) ^8 b6 G! dRemember 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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