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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,
2 p/ t( U7 g( `% Y/ l# ?  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.# {- C  a8 ^8 V( c6 E& {+ Q8 N" |
  Loads are processed by each operator for the following time:, _( r. t% e/ M7 B' C
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
% l+ I2 a0 W+ e, d( l  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.
4 ~' F3 N& N7 U, D1 D  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
' U, s- D" i) r9 x5 M9 fSend 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.9 a3 b" H5 }7 z# B& P4 R9 n* p
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问题:
/ J2 X8 [, e2 u- ~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
( g8 [8 E2 d! u/ L) [move into Q_wait /*Capacity is infinte*/. k8 ]6 [# C; M; [
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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5 w% k- A5 ~( r& c1 SP_B and P_C is similar
4 r$ r$ A/ J/ o8 c7 v8 e8 ptriangular 30,60,90 min
! Q4 v3 d9 {: E  l/ x' V, nu 60,30 min6 _) H% o# |: l) L
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0 o* f/ i0 M* U% l1 ein P_C, you need to send to die.$ B; c; z2 A! W  r( s8 ]+ c
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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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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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