Index[A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [R] [S] [T] [U] [V] [W] [X] [Z] radar Raymond, Eric S. RDF (Resource Description Framework) metadata and ontologies and syntax complexity representation, language and RFIDs (radio-frequency identification tags) advantages applications tags active passive Rheingold, Howard mobile communications thumb tribes root nodes Rose, David round earth theory RSS |