International trade has become an integrated part of our everyday lives. Many, if not all, of the foods we eat and the clothes we wear today are consequences of trade, one way or another. Not a single day passes without contemporary media covering several reports on world trade. During the past six decades of the modern trading system, the volume of world trade increased more than twenty times....

A new global georeferencing system-the World Geographic Reference System (WGRS)-is proposed. This system has particular advantages for location description and communication with electronic devices, i .e ., in digital environments that are shared between humans and machines . The new World Geographic Reference System strikes a compromise between the dominant use of numbers in established scient...

The development of interesting virtual world systems requires the modeling of many different, usually complex, graphical objects. How these objects are represented in the system plays a major part in determining the capabilities of the system. We present an efficient, flexible and extensible object description language used in virtual world system development at the Naval Postgraduate School.