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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,
) l0 r/ P9 K' x: p) ^( e  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.* F7 n: i1 L0 Z" t6 \
  Loads are processed by each operator for the following time:
; {- X: T/ D/ y! F$ R5 ^  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
1 e- K. R) E; r, ^$ m, s6 Q  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.) E1 D/ U" f4 r$ N' V' C: {
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.8 \0 O- q3 T$ _* M$ `: {" s9 Q8 u
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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问题:
& ]( Z4 c7 ?' ]( s; x# OAfter running the model for 10,000 days, what was the average number of loads in each process?
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, A/ @# p3 H) a/ U: G, G1 a2 ~) _不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
! [: S' n9 F: b, vmove into Q_wait /*Capacity is infinte*/, Y8 M0 n/ e2 J
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/* N" R  O) |6 w* \3 N) N& b
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send to P_B
4 O% C" ?% f% z. j4 F7 Cend
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: C3 R8 T8 k1 @. y5 c# _' tP_B and P_C is similar
7 X/ a0 F) \% _! O% F! a% s- Striangular 30,60,90 min0 @. ~$ J- C- `, w* G0 M. b
u 60,30 min
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; F) |) @0 h' }/ x. Sin 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.: t# X% `* T9 C
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Remember 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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