I.D. Task Name
1. prepare drawings
2. identify tenants
3. develop prospectus
4. select G.C.
5. prepare permits
6. obtain permits
7. build mall
8. finalize contracts
9. tenants move in
Duration
5w 6w 4w
3w
1w
4w
14w
12w
2w
TASK
Predecessor
1
1
1
5
4,6
2,3
7,8
Activities
ID Pred.
a Grow donor plants
b a
Cross & harvest F1 seeds
c b
Rear F1 plants
d Procure chemicals, etc.
e d, c
Determine polar stage; plant F1 anthers for induction
f Prepare aseptic growth room
g e, f
Plant calli; regenerate plants; screen for salt tolerance
h g
Screen plantlets in culture solution for salt tolerance
i
h
Identify haploids; create diploids
i
Transfer plantlets to field for screening and seed production j
k j
Screen material at Network sites
I k
Select homozygous lines for agro-edaphic environments
m I
Test material in on-station trials
n m
Data analysis
o n
Nominate entries for National Screening Nursery
p o
Promote entries to National Trials
q p
Evaluate on-farm in farmers' fields
r p
Farmers' Field Days
s q
Release of cultivar by Variety Release Committees
t s
Overall analysis and report writing
d1 p
Dummy
Estimates
tm
20
5
12
20
10
12
8
5
5
12
20
20
20
8
20
40
. 20
4
8
12
Table 21.1 A List of the Activities Associated
with an Inventory System
Description
Order hardware and software
Shipment time
Clarify manual procedures
Design files
Prepare site and install
Design record shipment program
Initialize vendor file
Initialize customer file
Initialize inventory file
Write record shipment program
Customize reports
System test
Train inventory manager
Train sales clerks
Train clerical personnel
Train store manager
2 A Sample Problem for Finding
Duration
2
5
1
4
1
1
1
1
1
1
1
1
1
2
0.5
1
Activity
1-2
2-5
3-12
4-7
5-7
6-10
7-8
8-9
9-10
10-11
11-12
12-13
13-14
13-16
14-16
15-16
the Critical Path and Critical Time
Activity Predecessor Duration
a
—
5 days
b
—
4
c
a
3
d
a
4
e
a
6
f
b, c
4
g
d
5
h
d, e
6
i
f
6
j
g, h
4
Activity Description
Optimistic
Predecessors
A Survey Site
4
B Excavation
15
A
C Prepare Drawings
18
None
D Soil Study
1
B
E Prelim. Report
3
C, D
F Approve Plans
1
E
G Concrete Forms
9
F
H Procure Steel
10
F
I Order Cement
1
F
J Deliver Gravel
5
G
K Pour Concrete
14
H, I, J
L Cure Concrete
2
K
M Strength Test
2
L
Find CPM
A
B
C
D
E
F
G
H
I
10
5
8
12
15
3
10
4
2
A
B
B
B,D
C
G,F
H,E
None