1 There are various conditions in which one part of the body overgrows others because of a genetic or congenital reason. An example of such a reason that would cause swollen legs is Klippel-Trenaunay syndrome.  Disuse edema â Not using a limb causes changes in blood flow and return to and from that limb.
A non-directional (radio) beacon (NDB) is a radio transmitter at a known location, used as an aviation or marine navigational aid. bearing is a line passing through the station that points in a specific direction, such as 270 degrees (due West). NDB bearings provide a charted, consistent method for defining paths aircraft can fly. In this fashion, NDBs can, like VORs, define  airways  in the sky.
A knowledge base (KB) is a technology used to store complex structured and unstructured information used by a computer system. The initial use of the term was in connection with expert systems which were the first knowledge-based systems.The original use of the term knowledge-base was to describe one of the two sub-systems of a knowledge-based system.t this point in the history of Information Technology the distinction between a database and a knowledge-base was clear and unambiguous. A database had the following properties: 1  Flat data. 2  Data was usually represented in a tabular format with strings or number in each field.