A method of detecting a changed condition within a geographical space from a moving vehicle. The coupling device includes a sensing mechanism which monitors relative distances within the coupling device in order to detect displacement in the coupling device. When the document is imported into a spreadsheet application grid, the data map is parsed to find XPATHs which determine the location, data types and user data for each cell or list object in the document related to the schema file. The osteoinductive surface modification comprises a biopolymer matrix coating that is seeded with periosteal cells that have been previously harvested either from the graft recipient or from an allogenic or xenogenic donor source. This process includes the steps of clamping the tube within an open end of the membrane, injecting liquid adhesive into the open end of the membrane, clamping the membrane and tube where the adhesive was injected, and heating and curing the assembly.