 |
 |
 |
 |
 |
 |
 |
 |
 |
l |
Finally, the
time-space considered is divided into
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|
small
boxes (i,j,k) of the size (s
´
s ´ u).
|
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|
l |
"Quiet"
boxes are singled out for each small
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|
|
square
(i,j); they are defined by the
condition that
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|
nij(k) is below the Q percentile
of nij.
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|
l |
The clusters
of q or more quiet boxes connected
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|
|
in space or in
time are identified.
|
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|
l |
Area V is the
territorial projection of these
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|
clusters.
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|