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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,, O- c: Q$ ]' j/ v
  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.0 i7 ^, h& j( n" H- j- N) [
  Loads are processed by each operator for the following time:3 l4 m2 m" m& e# ]; E, A2 G
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.8 r  ]: J* I$ C4 y* O7 B0 u
  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.1 E3 ?! i5 M3 I+ t* T
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.- v1 _! K2 {* n) s' S
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.
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问题:
2 H- r& n2 ^' Z" NAfter running the model for 10,000 days, what was the average number of loads in each process?/ i+ Y$ T6 h& I, g

, [7 Q, ?) \( H9 @& n7 p' y+ {( Z不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
, m) x& o1 c8 N, K2 h: amove into Q_wait /*Capacity is infinte*/
# I( l( C" g) ~. R0 Gmove into Q_process /*Single capacity*/0 n+ [) I$ i$ L' }1 ^2 ~+ A- c$ _

% v) _" U3 |8 [6 S4 Euse R_A for n 60,10 min /*Resource A*/' U4 B2 |1 W) ^/ u( Z

0 W5 D: |  d1 O, Fsend to P_B
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P_B and P_C is similar
" M+ f6 J4 q) N- M9 Striangular 30,60,90 min
! r- S, {- ~0 Q3 r* Ju 60,30 min9 J* T5 u& A+ ]6 T* b6 v3 w
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in P_C, you need to send to die.
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: d- F% z% F  i# ~6 t5 m  ?' YThen 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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