A method and apparatus are provided for modeling circulation in a living subject. The mapping tool also includes at least one electromagnetic field detector which is configured for measuring the locating signal from a fixed position proximate to the surface of the ground in a drilling area. When output values obtained when a document on AF line is read by a line sensor are represented by LS1, LS2, LS3,. A plurality of stream access identifiers may be associated with the media content identifier. For removing cells from an active set of cells, the WTRU evaluates and reports to the network measurements of the antenna beam selected for communication with the active set cells.