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Glossary 295

Intel
The major microprocessor manufacturer of CPUs used in Windows PCs
and servers.
Internet
A set of connected networks. The term “Internet” refers to the large and
growing public domain Internet developed by DARPA that uses TCP/IP.
It is shared by universities, corporations, and private individuals.
intranet
A Web network that connects computers within the same company or
organization over a private network. An intranet offers higher security
than an Internet Web site because of the private nature of the network.
IP (Internet Protocol)
The network-layer protocol for the Internet protocol suite.
IT (Information Technology)
The study, design, development, implementation, support, or manage-
ment of computer-based information systems, particularly software
applications and computer hardware. ptg
ITIL (Information Technology Infrastructure Library)
A set of concepts and policies for managing information technology (IT)
infrastructure, development, and operations.

Ivy Plus technology consortium
A consortium of top universities (Ivy League plus other universities,
such as MIT, Duke, and Stanford) that fosters collaboration to help drive
future growth and use of technology.

KWH or kWh (kilowatt hour)
A basic unit of electric energy based on using power of 1,000 watts for
one hour. The kilowatt hour is the energy delivered by electric utilities
that is usually expressed and charged for in kWh. Note that the kWh is
the product of power in kilowatts multiplied by time in hours; it is not
kW/h.
Large Hadron Collider
The Large Hadron Collider (LHC) is the world’s largest and highest-
energy particle accelerator. Built by CERN, the LHC drives much of the
need for performance computing (HPC) at hundreds of universities and
laboratories around the world.