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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,
$ n- w: t8 F+ C. G  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 r- U& e" r$ ^# F  Loads are processed by each operator for the following time:
" L+ s4 v3 F; y% s& a  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.. [2 o- E, `, h, }
  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( [7 I' C& K( u  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
! I- l! t/ }- @4 b( vSend 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:( K/ R' \/ d" x$ o
After running the model for 10,000 days, what was the average number of loads in each process?
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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: O9 Q, ]) @% A. H4 w( w
move into Q_wait /*Capacity is infinte*/' C' z' R7 e  [/ o) P4 v0 Z' s$ J* u
move into Q_process /*Single capacity*/3 r- q5 k  G: O2 u
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use R_A for n 60,10 min /*Resource A*/3 z+ }; Q& y; ^! }7 v
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send to P_B2 K' L% F3 o+ k) [& D
end
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P_B and P_C is similar
, `* @% g# s) E: m. rtriangular 30,60,90 min
! @3 u, R. J$ Bu 60,30 min* g& h" u! W2 ?4 z
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4 n0 S% N! @2 D2 R8 m& ~( Jin P_C, you need to send to die.
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" F0 O7 \; r) `; kThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.3 S; a+ N% q7 h- D6 e3 b

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6 M8 o+ S! p: O, w. pRemember 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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