; 䳺, . . ( ), . : ; .
䳿, , 䳿 . .
, . , . , ( ), ( -) .
, . (duraton) . ̳ , . (lead tme) (lag tme). , , .
, , , :
1. .
(Mandatory dependency, Hard logic) . , , .
2. .
(External dependency) . , , .
3. .
(Discretionary dependency, Preferred logic) . , , , .
, .
, .
ѳ 䳿 .
䳿 . 䳿, . , .
. , . , .
, , , . г , .
. 2.12 䳿 䳿 B t = AB =2 .
. 2.13 , 䳿 1 ( ), . , 䳿.
ѳ PERT . (). ֳ .
. 2.14. PERT- Microsoft Project
. 2.14 , , 䳿. , . .