We present a fast involutional block cipher optimized for reconfigurable hardware implementations. ICEBERG uses 64-bit text blocks and 128-bit keys. All components are involutional and allow very efficient combinations of encryption/decryption. Hardware implementations of ICEBERG allow to change the key at every clock cycle without any performance loss and its round keys are derived “on-the-fly...

Changes in velocity of the large outlet glaciers and ice streams in Antarctica are important for ice sheet mass balance and hence sea level. The ice flow velocity is also a critical variable in understanding glacier dynamics. Polar Record Glacier, with a calved iceberg in front, is about 50 km to the west of the Zhongshan Station, East Antarctica. SAR interferometry can detect the surface displ...

RICHARD HUNTER and IDA MACALPINE, Three hundred years ofpsychiatry 15351860, [reprint], Hartsdale, NY, Carlisle Publishing Inc., 1982, 8vo, pp. xxvi, 1107, illus., $95.00. Three hundred years ofpsychiatry is without doubt one of the best books ever produced on the history of psychiatry. Most collections of extracts are at most useful for casual browsing and conveying a flavour of original sourc...

1. Introduction In a scene in " The Importance of Being Earnest " Oscar Wilde pinpoints an array of properties of religious ritual systems that cognitive theorizing about religious rituals, viz., the theory of religious ritual competence, has subsequently systematized (Lawson and McCauley 1990; McCauley and Lawson 2002). To the amusement of hundreds of audiences, Wilde's play also identifies a ...