Stochastic elements. Shortage of information on how various
parts of the system integrate demands statistical description of
the links between the quantities.
Common conditions for complex systems are
- inherent insensitivity to change, i.e. they are relatively slug-
gish, - sensitive points in the system, i.e. points where a small
variation can have a significant effect on the system, and - conflicting short and long term effects.
The pattern that the measures combine in is the connection bet-
ween the separate measures and the responses (connections
between parts and the whole). A consequence of this is that the
tactical complexity is low if only a single measure is initiated
and executed. The dynamics of the process is then easier to
handle. There is always a degree of dynamics, since even a single
measure must be inserted in the right place and at the right time
in order to be effective, for example, in the case of a fire in a rub-
bish bin, which can be handled with a hand fire extinguisher. The
tactical complexity is also low if several measures are initiated
and executed consecutively. An example of such would be a traf-
fic accident (single vehicle accident) in which certain measures
Several measures
(resources or units) are
combined in a tactical
pattern with varying
configurations in time
and space, depending
on the prevalent
conditions (Svensson,
1999).