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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,# G# _" z9 t6 M+ y% X
  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.
% I2 w$ n6 |  F! w! S  Loads are processed by each operator for the following time:" @" i' ?) r" w7 J( D  t
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
: F5 y7 K# I  u) R4 Z( \  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.
! Y4 p: |  t- i3 n9 G  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
3 ~+ K8 ^2 K3 N+ h% p! qSend 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.; Q; h7 |: G0 S- _0 z( d  ]

/ p4 W3 j- R- k. }2 p; C3 [问题:* L, m7 t) I' G# g. v8 x' ^0 p* z
After running the model for 10,000 days, what was the average number of loads in each process?& Z" g7 O* c7 u! Z
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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 arriving0 j; X( s' }5 l7 u" R2 K' u/ m9 \; E
move into Q_wait /*Capacity is infinte*/
/ L* N% g. B. V, y; D' ]$ imove into Q_process /*Single capacity*/% C9 U5 W! j" H+ P6 f- }

" N" n+ `. D8 l5 M9 yuse R_A for n 60,10 min /*Resource A*/
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: n2 l4 B6 v! t3 Msend to P_B
. p( h6 H7 O6 I: V0 p! x: T7 m- ?end
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$ ]8 y0 [* I  h% l5 C" e1 f' W4 qP_B and P_C is similar
/ S/ z$ s8 Y2 c0 u- X8 o1 f8 |8 ctriangular 30,60,90 min
; S0 f9 e( T: c1 u2 }u 60,30 min  ?* J1 y+ Z& A6 I2 j

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6 [& Q' [; \/ V/ Z1 i. Cin P_C, you need to send to die.0 A( ~2 f- M4 l
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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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& j3 P! Y7 d% R& [; r% cRemember 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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