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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+ q, S3 \8 `! j- z" \% G
  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.- `6 Q) A( X2 e- k
  Loads are processed by each operator for the following time:" F0 @6 \( H% x9 q$ t* ?' r
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins." D0 N  E5 x2 @) o! |" H" q/ d( y
  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.3 {9 Y: Y: P$ B/ ?
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
6 ^3 |( j0 P( }3 r7 h" xSend 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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After running the model for 10,000 days, what was the average number of loads in each process?! H! W9 a5 r5 Q1 I& f
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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" K* X! L. p, s9 s2 y) O
move into Q_wait /*Capacity is infinte*/8 N0 z$ B/ ]$ n  f
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
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; G4 ]1 E5 M5 y2 q: T; j' {0 ]8 z/ ?P_B and P_C is similar/ U, h: w' H! f# j7 l3 F3 R0 r
triangular 30,60,90 min
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+ ]; u: r7 G) v  _% d' @* n% vin P_C, you need to send to die./ @& S6 j3 D7 O" ?1 P2 G4 S! i
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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.
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7 `, D7 i8 Y4 }5 Y! P# Y7 ^; _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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