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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,
* q0 `) x" P2 x8 v9 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.
" A' I& N+ r- v$ t6 N% V  Loads are processed by each operator for the following time:
% `/ |6 ?9 l, Q5 e  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
& @+ G- e5 \6 H! g; J  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. v7 |6 u+ q. k; ~
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.0 W8 r( n7 |1 ^) C' h. l# _+ X
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.  K* h* k: E" G- e/ l4 |! w/ [

. G. d0 \) I! p  d( Y问题:- m. Y( B  r  O! j0 y
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: G; H3 ~2 R4 G% F: |
move into Q_wait /*Capacity is infinte*/
% ~. d7 l0 ]1 [$ |7 ]3 Y5 p( A0 Dmove into Q_process /*Single capacity*/" Z$ R% x% f8 D
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use R_A for n 60,10 min /*Resource A*/) N9 ^% [- ^4 ?) E8 t! b+ }( ^, {7 ~
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send to P_B) |/ J7 B- t2 I8 ^
end
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8 S" v* ?* M# DP_B and P_C is similar' n5 r( j/ M5 r
triangular 30,60,90 min
+ I2 }! w4 `, q4 Du 60,30 min
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$ w+ v, x: t# d/ b# w1 n. Bin 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.% ~1 U- n$ t8 [
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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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