Any component of a communication cable, metallic or optical, the function of which is to protect the transport medium, i.e., conductor or fiber, from excessive tensile and bending stresses during installation and while in service. [After FAA]

1. A measure of the effectiveness of a security mechanism to prevent a breach of the System Security policy, assuming it has been correctly implemented [CESG].
2. An aspect of the assessment of the effectiveness of a Target of Evaluation, namely the ability of its security mechanisms to withstand direct attack against deficiencies in their underlying algorithms, principles and properties… (Read More →)

In radiocommunications, an environment that is under the influence of extrinsic factors that degrade communications integrity, such as when (a) the benign communications medium is disturbed by natural or man-made events (such as an intentional nuclear burst), (b) the received signal is degraded by natural or man-made interference (such as jamming signals or co-channel interference), (c) an interfering signal can… (Read More →)

A sequence of data elements, such as bits or characters, considered as a whole.

A straight line or arc that is used as a segment of a graphic character.

In character recognition, the line of discontinuity between a side of a stroke and the background, obtained by averaging, over the length of the stroke, the irregularities resulting from the printing and detecting processes.

In facsimile systems, the rate at which a fixed line perpendicular to the direction of scanning is crossed in one direction by a scanning or recording spot.
Note 1: Stroke speed is usually expressed as a number of strokes per minute. When the system scans in both directions, the stroke speed is twice this number.
Note 2: In most conventional… (Read More →)

In character recognition, the distance between the two edges of a stroke, measured perpendicular to the stroke centerline.

Authentication by means of cryptographically derived credentials. [After X.509]

Development of a system or part of a system where components at lower levels are traceable from those at the higher level [CESG]. See also: Disciplined, Rigorous, Verified Development