A process in an IBM token ring network which ensures a token is present on the ring, removes circulating frames with unknown or invalid destinations, and performs introductions between machines on the ring.
- Active optics
noun (functioning as sing) a system to compensate for any deformation caused by gravity in the surface accuracy and alignment of the mirrors of an astronomical telescope by means of actuators that control the movable mirror supports
- Active principle
active principle active principle n. A constituent of a drug, usually an alkaloid or glycoside, on which the characteristic therapeutic action of the substance largely depends. Historical Examples Is it used by nerves as food, or used by lungs, heart, or any organ as an active principle in the magnetic or electric forces? Philosophy of […]
- Active reason
an activity of intellect, embodying universal truth, potentially present in the mind of every individual, and when present, forming the only immortal part of the individual. Historical Examples But to this doctrine Aristotle makes an exception in favour of the active reason. A Critical History of Greek Philosophy W. T. Stace On the other hand, […]
- Active repressor
active repressor active repressor n. A repressor that binds directly with an operator gene to block it and its structural genes from synthesizing enzymes; it is a homeostatic mechanism for the regulation of inducible enzyme systems.
- Active safety
noun the practice of taking measures to avoid accidents, as opposed to merely reducing their consequences Compare passive safety