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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,! u4 ^5 M8 A, t. s
  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 _  w  q# p" U9 ~- h, I  Loads are processed by each operator for the following time:
) y" w& P3 ~) H6 K2 v5 X$ R. C* i  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
' o3 r8 W" W3 S9 i' n  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.- D( @& h. W) H( {6 t* V# `; r
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.9 r3 Y' t8 X0 P* k6 d
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.; P( M% F  m8 f- |3 e& [, y
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问题:
& b- Y9 i: Y% Y# b' p* zAfter running the model for 10,000 days, what was the average number of loads in each process?( @6 Q) I! U5 W7 r- @; x; Y/ c
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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$ `: w$ K1 B! Z! r2 a$ W: |
move into Q_wait /*Capacity is infinte*/
; p( w- V. `$ Z  `  T0 @move into Q_process /*Single capacity*/. ?) r& X3 g3 k0 H6 F# m
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use R_A for n 60,10 min /*Resource A*/
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6 U3 p: ^! y$ W. S4 n+ wsend to P_B
5 z& V. {; ]! c; T9 d1 hend
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. D5 M* S8 `* p+ {3 y+ IP_B and P_C is similar
. _9 i& `# A' R& N; ttriangular 30,60,90 min
8 W4 _6 J7 g" L: N( X6 ^$ vu 60,30 min
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. T4 x7 B1 {  Win P_C, you need to send to die." f" g1 d! R) v
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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.0 v, i7 x8 T4 p$ k$ b$ T

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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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