
384
The total idle time of the jth doctor IT
j
is
(17)
The inclusion of the overtime term into the com-
putation of the total idle time suggests that the free
time of the doctor before the end of the office hour
be considered as an idle time as well. The total idle
time in the appointment system IT
T
is
n
(18)
The average idle time for a doctor IT
A
is
(19)
It is noted that the performance indices as
defined above can be combined in a various
ways to establish the performance functions of
the appointment system. As an example, the per-
formance ...