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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,
* j& t. N$ B  ^# h  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., h0 p, J2 m8 U+ k2 K' Y
  Loads are processed by each operator for the following time:7 ]  ^; k9 J3 ?# V! f1 p& e6 d; R
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
7 @' k( e+ j3 W* [1 I6 z5 t. w: n" r  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.
( Q: x3 n" k2 [; m" Q9 h+ ?  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
3 Q( F5 u: p$ _+ e6 j' ^9 ]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.# s3 w9 B. ^' t" W; R3 c
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问题:  ?4 Z/ J6 e) h% Z
After running the model for 10,000 days, what was the average number of loads in each process?7 W: w3 B  l" ^+ \) U

* {. O' @! w/ [3 U不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
% P* x8 _; Y  d, a$ |, G1 e; C2 smove into Q_wait /*Capacity is infinte*/& R. T% K1 ^4 S1 N
move into Q_process /*Single capacity*/
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, }- @' w4 A7 z; e: ]- T/ euse R_A for n 60,10 min /*Resource A*/  V7 N' X5 f& }. a

, e5 g; W: A' K" k- w' asend to P_B
/ a( N- E2 `( Q$ Y1 ^6 {end
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- ^  r! v# \! u& B4 IP_B and P_C is similar$ h) Q2 R  f* f! U( I9 E& B- w; T
triangular 30,60,90 min9 `8 ]% b* O, j) |" V
u 60,30 min
7 b8 g$ e5 p7 A# @6 j( s! U: G, W. x, H0 S" m

% T+ X& L' E2 l# n. Rin P_C, you need to send to die.& Z" Y$ A, U. Z3 G: E9 d
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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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* ~9 ~- n8 |% ~7 B& `
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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