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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,
  I; L$ l7 K! ~% v2 m  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.
7 E9 g% P# ^  n) P8 _$ Q; i2 S  Loads are processed by each operator for the following time:# {6 f- p& V8 C
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
9 ]3 w! p% D$ m1 f- 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.( O# r4 n( l  D" Y6 n8 Q% X" T
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.0 h7 S" O* f- M# b2 m/ z$ P7 R
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.; R# y9 f0 x) w* f: ?4 T4 A
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问题:& g- ^$ v" Y$ I# V3 j* C
After running the model for 10,000 days, what was the average number of loads in each process?4 g  p3 Q7 y5 b- {. q: ~

- z5 ]) F- Z# `* {( g2 R不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
  s! f; w! i3 o1 S, i" R3 jmove into Q_wait /*Capacity is infinte*/0 Y4 F( m# Z& X8 C; Y8 C6 k
move into Q_process /*Single capacity*/
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2 P: P' i- Z* D6 [: j- g7 F, e' Guse R_A for n 60,10 min /*Resource A*/2 ~( C2 S: i: S) Q( j

) W: {2 M+ ~+ P3 Dsend to P_B7 M, H4 }3 A5 L9 v
end
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. }( l6 X0 B% v2 WP_B and P_C is similar
' u% P2 q# P  K# T! Y. `triangular 30,60,90 min
9 {4 g! o  X( su 60,30 min5 v* T% s; n; F( c. o

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in 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." J2 s; g' Q, [0 ~( u

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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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