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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,
/ b. ~) n: J; s! z6 L( k  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.
* L; s: G! U6 J& y7 c  Loads are processed by each operator for the following time:" ?5 A4 ]5 P2 d& l) [1 z1 {/ I
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.8 R  T  J* R4 W7 ^/ X; r2 {
  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.& X& T2 e: q) l8 _. d; w2 i
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.9 Y% U& w4 Q/ h4 C9 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./ Y( }3 {% H& \! Q& |1 d, E* n
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问题:. d" i) L( s1 o' c( a( b* ]
After running the model for 10,000 days, what was the average number of loads in each process?: U+ r; Z  H4 [5 w( X

5 C( j3 N3 x" [% u2 r  ^7 f& F不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving! J" f) O# v3 L' U3 }3 V2 p: {
move into Q_wait /*Capacity is infinte*/
( R( _; V& n/ \0 c. @' Q8 lmove into Q_process /*Single capacity*/
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6 r: I* X/ h9 q- _! h4 m: I9 K3 tuse R_A for n 60,10 min /*Resource A*/$ g2 |; X- `$ u0 N7 N! O

+ v  S) F6 v5 c* l) I$ E3 ?  _send to P_B
9 M) S# B5 q9 o' y9 [1 Oend$ _( U- Q4 c: m3 P- g, N; _

" Z6 k! `$ L# w- T& b$ dP_B and P_C is similar; Z  S- J. a6 M% C1 T3 I
triangular 30,60,90 min
5 J) F( P6 F- H% T; m0 @u 60,30 min* h) a5 r+ ]& p7 B! D% b% p

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in P_C, you need to send to die.
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& q1 x) @! \( `0 q: @( yThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.5 B; T1 [% R6 l8 ]: \) k
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9 }. c5 C) D. ?9 e2 z: D! |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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