1
2
PERTURBATION PROPAGATION
Christos G. Cassandras
CODES Lab. - Boston University
A
1
A
2
A
3
A
4
A
5
D
1
D
2
D
3
D
4
1
2
I
4
1
D
D
1
=
D
Z
1
1
2
D
D
2
3
1
2
D
D
3
>
I
4
4
D
D
4
EXAMPLE: Perturbations in mean service time
Þ
D
Z
1
(
q
),
D
Z
2
(
q
),
…
D
D
3
-
I
4
Z
1