The proliferation of automated machinery and control systems has increased the demand for skilled labourers and knowledgeable technicians who can operate the newer devices.
In health care the use of automation in the form of computer systems has increased dramatically to improve services and relieve the burden on medical staffs.
In addition, it observed, "the consolidation of hospitals into networks and systems" has increased their bargaining power, so they can extract higher payments from H.M.O.'s and other insurers.
Matt Swanston, a spokesman for the Consumer Electronics Association, said that the number of car navigation systems has increased steadily since 2001, from 17,000 receivers sold to 28,000 so far in 2003 (not counting hand-held units).
"We've had a relatively quiet [period] in space weather and we can expect that quiet period to end... the potential vulnerability of our systems has increased dramatically, whether it's the smart grid in our electricity systems or the ubiquitous use of GPS in just about everything these days".
Furthermore, interest in alternative models for sharing spectrum among wireless communication systems has increased [7].
In the recent decades, demand growth in public transport systems has increased rapidly.
With the development of nanotechnology, the demand for information about microscale systems has increased [1, 2].
Proliferation of nonlinear loads in power systems has increased harmonic pollution and deteriorated power quality.
In two years, the amount of data flowing through systems has increased by a factor of 10," explains Bogue.
The penetration of renewable resources in electrical power systems has increased over the years.
