Dependencies

Dependencies may be technical, such as software that depends on other software in which to run successfully, or social, as in depending on others in order to achieve a goal.

Ethernet

Ethernet is a family of computer networking technologies working over WAN (Wide Area Network), LAN (Local Area Network) and MAN (Metropolitan Area Networks). The Internet Protocol is commonly carried out over ethernet, so it has become one of the key technologies that make up the Internet.

Ethernet was developed at Xerox PARC (Palo Alto Research Center) between 1973-1974. The idea was first documented in a memo written by Robert Metcalfe, who named it after the luminiferous aether, a substance that was once thought to exist as an "omnipresent, completely-passive medium for the propagation of electromagnetic waves."

Graphology

While topology is the study of forms that are preserved under deformations, such as stretching, crumpling or bending (but not tearing or gluing), graphology is the study of diagrams that represent these forms in a 2-dimensional space. Often 3-dimensional topologies can be collapsed into 2-dimension graphology studies.

GPS

GPS (Global Positioning Service) is a satellite radionavigation system owned by the United States government, and operated by their air force. The system uses a process of trilateration, whereby at least three satellites are needed to determine position.