A computer problem-solving method in which the current situation is represented as a schema to be mapped into the desired situation by putting the two in correspondence.

Connecting two circuits or parts together with a coupling device in such a way that the maximum transfer of energy occurs between the two circuits, and the impedance of either circuit will be terminated in its image.

The bringing of two or more signals or indications into suitable position or condition preliminary to making a measurement, as on a loran indicator or a sky compass.