Explicitly authorized access of a specific user, process, or computer to a computer resource(s). [INFOSEC-99]

A standard form of message, that has elements that usually are understood by prearrangement among the originator, the addressee, and the communications system operators. [From Weik '89]

[An] Attempt to gather information about an information system (IS) or its users. [INFOSEC-99]

A problem-oriented computer programming language that facilitates expressing a procedure in the form of explicit algorithms.
Note: Examples of procedure-oriented languages are Fortran, ALGOL, COBOL, and PL/I.

In communications systems operation, pertaining to a signal or event in the call-access phase of a data call, which signal or event confirms the reception of a call-request signal and advises the calling data terminal equipment to proceed with the transmission of the selection signals.
Note: Examples of proceed-to-select pertain to a dial tone in a telephone system.

In a communications system, a signal that indicates that the system is ready to receive a selection signal.
Note: An example of a proceed-to-select signal is a dial tone.

1. An address space and one or more threads of control that execute within that address space, and their required system resources [POSIX.0].
2. A program in execution. It is completely characterized by a single current execution point (represented by the machine state) and address space [TCSEC].

A computer system, with a process interface system, that monitors or controls a technical process.

Automatic control of a process, in which a computer system is used to regulate the usually continuous operations or processes.

Equipment that measures the variables of a technical process, directs the process according to control signals from the process computer system, and provides appropriate signal transformation.
Note: Examples of process control equipment include actuators, sensors, and transducers.