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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,
" V( @1 u' N) d1 f( C: a  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.
+ F" P2 u$ H# _  Loads are processed by each operator for the following time:
& F0 w3 i# Q* n! _$ E% e  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins." @4 {- G) ]. H& G
  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.8 x. m2 g& u- T4 l( X! ]
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.; l- j  E4 }- I3 O7 R5 Z+ Y4 v
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.+ q% R& I- v2 X( H( [: r

0 E4 P, r; T/ C  S. _5 {问题:
9 ~6 }7 \8 Q7 t) a" \After running the model for 10,000 days, what was the average number of loads in each process?/ e9 }3 }# v" x
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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! \" N8 U5 R$ L: c# N0 T6 j
move into Q_wait /*Capacity is infinte*/
; r! H" Z" O% l" s# a: e0 Rmove into Q_process /*Single capacity*/) h' ]1 ]+ p" J+ [, `  O4 u$ d

# E' J1 P6 }5 A  P! I5 Fuse R_A for n 60,10 min /*Resource A*/8 o4 g' u4 ^! d  |4 U$ K

, b. |+ m8 M2 W9 Tsend to P_B
* n2 w' L$ B/ J8 p8 xend
0 X. t' i* z2 e& ^' q; _5 T* ]9 e" ^8 }
P_B and P_C is similar% ~& i# Q' ^- ?) L( _! V7 N+ I# ?% o
triangular 30,60,90 min
9 T: u1 p9 F* C  ?. Tu 60,30 min
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6 G& f( g  s; c9 Oin P_C, you need to send to die.7 B4 l$ U2 T" a4 t! r1 G- `4 K

# n4 ]; p' u2 z5 Q% o7 z* UThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days." i' e$ L  w. G. \( U

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: g8 T7 ^( ]9 M4 x0 JRemember 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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