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Effective processor power, 357
Efficiency, 340-41
defined, 340
measurement, 340
multiprocessor curve, 341
ENIAC computer system, 2
Erlang distribution, 176-77
defined, 176
See also Probability distributions
Evaluation parameters, 311-14
Events, 110-12
characteristics, 476
control, 479
defined, 110
hierarchy of relationships, 112
independence of, 147
interface unit, 477-78
LAN simulation, 476-79
nodal activity, 478-79
partial orderings, 111
processor, 477
utilization, 479
values, 112-13
See also Performance measures
Event timing, 256
Executable models, 29
Executive subsystems (NT), 367
Expectation, 155-63
for continuous random variable, 156
defined, 155
for discrete random variable, 155-56
for function of random variable, 156
nth moment, 158
See also Random variables
Expected delay, 240
Expected waiting time, 210
Experimental design, 326-28
fractional factorial, 327, 328
full factorial, 327, 328
simple, 327
Exponential distribution, 130, 173-76
defined, 173
illustrated, 175
Markovian property, 173, 181
random variable variance, 176
service, 207
See also Probability distributions
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