2. 2
Introduction to Extend
We recommend presenting this chapter by running Extend
6.0 directly, and interactively show how the program
works.
However, for your convenience, we have attached a
selection of the figures/screenshots from Chapter 7 of the
book as the basis for an in class presentation without
access to a computer with Extend installed.
NOTE:
3. 3
count
ev ent
2 V
1 A P
u #
A1-3
A1-3
S
DS
u #
Executive Import Repository
Operation Export
Basic Extend Blocks
Extend Elements
4. 4
2 V
1 A P
Apps In
This example shows a credit application rev iew process. One
application arriv es ev ery 10 minutes and is placed in an in box to
await processing. There are f our applications already in the in box
when the simulation starts. The rev iew process takes 14 minutes f or
each application.
u #
17
In Box
A1-3
A1-3
S
DS
u
0
0
Rev iewer
#
34
Apps Done
count
ev ent
A Simple credit application process
Extend Elements
7. 7
2 V
1 A P
Requests In
#
35
Requests done
A1-3
A1-3
S
DS
u
Underwriting
u #
0
In Box
Underwriting process model with a single team
Basic Queuing Model
8. 8
Blocks in the Statistics Submenu of the Discrete Event library
Update
Queue
Stats
Cost
Stats
Update
Resource
Stats
Update
Activ ity
Stats
C T
A
Row
Cost By
Item
Data Collection and Statistics
10. 10
Underwriting process model with a stack block
2 V
1 A P
Requests In
#
35
Requests done
A1-3
A1-3
S
DS
u
Underwriting
L w p
p
R
In Box
Queue Statistics
13. 13
Underwriting process model with a plotter block
2 V
1 A P
Requests In
#
35
Requests done
A1-3
A1-3
S
DS
u
Underwriting
L w p
p
R
In Box
Queue Statistics
14. 14
Waiting time vs. simulation time
0 10 20 30 40
0
0.25
0.5
0.75
1
1.25
1.5
1.75
2
Time (Hours)
Hours
Waiting time at In Box
Waiting time
Queue Statistics
16. 16
Underwriting process model with random processing times
2 V
1 A P
Requests In
#
3971
Requests done
A1-3
A1-3
S
DS
u
Underwriting
L w p
p
R
In Box
1 2 3
Rand
Random Processing Times
19. 19
0 1000 2000 3000 4000
0.3832314
0.5374235
0.6916157
0.8458078
1
Time (Hours)
Utilization
Team Uti lization
Average utilization of the underwriting team
Random Processing Times
20. 20
Underwriting process model with two teams
2 V
1 A P
Requests In
#
2455
Requests done
A1-3
A1-3
S
DS
u
Underwriting 1
L w p
p
R
In Box
#
1534
Requests done
1 2 3
Rand
A1-3
A1-3
S
DS
u
Underwriting 2
Adding a Second Team
22. 22
Modeling multiple teams with a transition block
2 V
1 A P
Requests In
#
3989
Requests done
L w p
p
R
In Box
1 2 3
Rand
C
# u
D
Underwriting
Adding a Second Team