Abstract: An along string measurement tool may include an elongate body configured for loading into a drill string and a sensor array arranged on the body. The sensor array may include a first sensor arranged at a first sensor location on the body and the first sensor may be oriented relative to the body and configured for sensing annular pressures in a wellbore. The sensor array may include a second sensor arranged at a second sensor location on the body and the second sensor location may be spaced longitudinally along the body from the first sensor location by a first distance. The second sensor may be oriented relative to the body and configured for sensing annular pressures in a wellbore.

Abstract: In a method of IP routing lookup in a routing table, comprising entries of arbitrary length prefixes with associated next-hop information in a next-hop table, to determine where IP datagrams are to be forwarded, a representation of the routing table is stored, in the form of a complete prefix tree (7), defined by the prefixes of all routing table entries. Further, a representation of a bit vector (8), comprising data of a cut through the prefix tree (7) at a current depth (D), and an array of pointers, comprising indices to the next-hop table and to a next-level chunk, are stored. The bit-vector (8) is divided into bit-masks and a representation of the bit-masks is stored in a maptable. Then, an array of code words, each encoding a row index into the maptable and a pointer offset, and an array of base addresses are stored. Finally, the lookup is performed.