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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,
4 ?! p$ M) P7 G7 c  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.
' `1 r) x4 E+ ~* I  Loads are processed by each operator for the following time:3 F3 M; [% o* @: D: m
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.! ^/ v5 g* [) F; j$ 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.
. T! T+ t, a2 S; U/ ?5 d1 U- {  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
! ~! J& T9 s" t5 c2 C1 ASend 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.1 ^6 |  |3 z/ S" H: T$ D) Z) h4 i
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问题:& W, v! N- S# N1 v
After running the model for 10,000 days, what was the average number of loads in each process?% m0 M$ `3 b: s) C8 q. g- F

; {' G. Y0 D# C' `9 S( d) i. o+ b不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving+ F1 ]9 {. S  y
move into Q_wait /*Capacity is infinte*/1 N3 r4 V0 N& H0 z8 |
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/1 J& w. f/ t* v* E

+ D" z+ i+ [1 _: U0 U. e8 q2 \send to P_B
* W* D: Z/ m# \# N% gend
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' @$ t% o/ W5 h+ V- A( wP_B and P_C is similar, ~4 z4 g* N. r# o
triangular 30,60,90 min; r( b( N) ?* H  \
u 60,30 min
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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.
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1 H# w1 ]8 I6 aRemember 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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