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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,
+ @) E$ Q/ J( P: U, q  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.) X; c) M6 p) C; t  s
  Loads are processed by each operator for the following time:' _8 h: n- K2 g0 a
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
1 u8 i, R8 F' r6 s  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.9 w5 ^3 H7 R% O
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
8 C# O, |$ T7 R! 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.
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; n' t" O0 r- v2 ~# N# z问题:
6 y! f) Z' \2 l& `5 M5 k; @5 tAfter 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
  e" \! g# ]6 T5 P6 Cmove into Q_wait /*Capacity is infinte*/
. r. Y  R0 ?/ ~; h' O, bmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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+ \) A. J0 C- i: e4 B; @$ ?send to P_B
6 P" O0 |2 T+ uend
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P_B and P_C is similar' o, L3 Q  d! Q+ R, @
triangular 30,60,90 min$ B6 p. A3 x- p% J8 F
u 60,30 min
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in P_C, you need to send to die.
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2 v% N7 B: g: z( Q4 e2 ZThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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; r5 O+ o) D+ R- S' a8 V- S' ERemember 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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