
suppose that the WiFi fails, i.e. η(Wifi) = 0, at a
given instant in time. Then Jane, Susan or anyone else
connected, will suddenly have a problem with their
WiFi-dependent requirement(s) identified simultane-
ously by one or more slices of the composite cube
matrix becoming unfit (i.e. turning red). Appropriate
care actions, therefore, can follow for all persons af-
fected. This requires an adequate risk mitigation plan
and an underlying risk analysis of the damage that a
requirement’s slice turning red can cause.
ACKNOWLEDGMENTS
The research work presented in this paper was funded
by Innovate-UK grant #10098971 under project name
ADA-UK: “Remote Healthcare Monitoring powered
by Network Intelligence and Automation”.
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