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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,5 }' {5 a2 s/ {" J" v
  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.+ E% D7 e3 @' |+ q
  Loads are processed by each operator for the following time:2 {% z/ u1 g9 K+ S) i4 V
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
0 q2 y% r* m, |" f0 z8 M9 }  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.
: G6 Q  }% X8 `; ]  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.6 g+ e7 m+ q3 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.
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3 z- A3 c6 t' M% r问题:
, L9 z9 ?5 m' k* ]After running the model for 10,000 days, what was the average number of loads in each process?
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- J+ m# z0 E# b& s: E: @不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
; T9 I: l5 L# A! V4 q/ I# [+ w; e& kmove into Q_wait /*Capacity is infinte*/1 [: v6 O: i4 }& D$ \
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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  l+ z; ]% r8 k7 |2 L0 _8 i% {& Gsend to P_B
, F4 O( X- N7 o, c  B8 N$ d) Dend. A' y; R; Q" {% Y( L# h! e
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P_B and P_C is similar
: C- j6 V  x3 Btriangular 30,60,90 min
2 S+ u2 W0 u0 {u 60,30 min
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in P_C, you need to send to die.9 n/ f$ B, y; \$ x
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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.- }) |+ m8 f& r9 d% w5 L0 O3 r6 M* p( k
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% }4 e5 o4 B0 |$ j. @, d. J5 sRemember 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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