Synonym warm restart.

1. A sequence of operations that is performed to reset a previously running system, after an unintentional shutdown. Synonym warm start.
2. In computer operations, the restarting of equipment, after a sudden shutdown, that allows reuse of previously retained initialized input data, retained programs, and retained output queues.
Note 1: A warm restart may be needed after a program failure.… (Read More →)

Synonym warm restart.

A statutory exemption pertaining to the acquisition of telecommunications systems that meet the exclusionary criteria of the Warner Amendment, Public Law 97-86, 1 December 1981, which is also known as the Brooks Bill.
Note: Use of FTS2000 by U. S. Government agencies is mandatory when telecommunications are required. However, the Warner Amendment excludes the mandatory use of FTS2000 in instances… (Read More →)

1. A copyright-protection method of embedding a code into a digital audio or video file to attempt to thwart piracy or unlicenced use.
2. In desktop publishing, an inserted (and usually faint) overlay of an image or text onto pages of a document.
Note: The watermark is usually visible on the computer screen in WYSIWIG fashion and on the printed… (Read More →)

Acronym for Wide Area Telecommunications Service.

See Maxwell's equations.

At a point in an electromagnetic wave, the ratio of the electric field strength to the magnetic field strength.
Note 1: If the electric field strength is expressed in volts per meter and the magnetic field strength is expressed in ampere-turns per meter, the wave impedance will have the units of ohms. The wave impedance,Z,of an electromagnetic wave is given… (Read More →)

A device used to exclude unwanted frequency components, such as noise or other interference, of a wave.
Note: Traps are usually tunable to permit selection of unwanted or interfering signals. [From Weik '89]

The representation of a signal as a plot of amplitude versus time.