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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,
* {* b/ v0 h" ?  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 \' d9 h$ s  G3 `3 z  Loads are processed by each operator for the following time:" B% |, C: q: }1 U0 @  G. n
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins." _9 u1 I1 E. I% N  C8 i( e  P
  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.; r) {# b/ O9 a+ T/ w+ R) ]& l
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
1 F, E$ m- ]( P. Y9 K/ CSend 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.+ n5 x4 |! S8 u+ D: ~9 O

0 {) M: G" L. Z, d8 J- j% l问题:
7 m" L6 z) ^2 G; g/ ZAfter running the model for 10,000 days, what was the average number of loads in each process?' Y' a) Y4 {3 N* s5 T- N" z

+ j5 b0 e; u( x! _不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
5 Q/ K- x) ^. m- e$ [1 Y* Omove into Q_wait /*Capacity is infinte*/
+ H0 O8 Q9 Z, h+ G$ q7 l1 @move into Q_process /*Single capacity*/: K" r+ C8 X# V

7 g, ^) w/ j! s  M/ ~* E- E5 h! Xuse R_A for n 60,10 min /*Resource A*/
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* C7 v! t8 V: @( d# w8 I& `) Wsend to P_B
' r$ _! M- [  R" y* ^# e! a7 o6 vend
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P_B and P_C is similar+ H  H0 ]7 j5 o( {/ W& X9 T
triangular 30,60,90 min( H: o8 f0 g3 V- j
u 60,30 min
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  Y- `/ ?8 Q1 [1 ?
% y2 {5 R4 t* p6 D* x! q5 ~in P_C, you need to send to die.
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- j* Q. E7 X6 R2 b" e; hThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.- M' D! i# G/ R  L" w

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# A2 U* D' C! c0 Q. @3 }, O( URemember 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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