The loop-shaping approach consists of obtaining a specification in relation to the open loop of the control from specifications regarding various closed loop transfers, because it is easier to work on a single transfer (in addition to the open loop) than on a multitude of transfers (various loopings such as set point/error, disturbance/error,...

The Israeli department of defence has one of the strictest information security guidelines in the world, and a part of these guidelines is the requirement to have complete physical separation between the public and internal networks. A regular firewall just won't do, and this requirement gave birth to the concept of the Air-Gap, a...

Historically, computer security is related to both cryptography and access control in operating systems. Cryptography, although mostly applied in the military and diplomacy, was used to protect communication channels and storage facilities (especially the backups). In the seventies there was a breakthrough in cryptography - the...

Jan Narveson is one of the most significant contemporary defenders of the libertarian political position. Unlike other libertarians who typically defend their view with reference to natural rights or an appeal to utilitarianism, Narveson's main contribution has been to offer a philosophical defence of libertarianism based on a Hobbesian...

Free Radicals in Biology and Medicine has become a classic text in the field of free radical and antioxidant research. Now in its fifth edition, the book has been comprehensively rewritten and updated whilst maintaining the clarity of its predecessors. Two new chapters discuss 'in vivo' and 'dietary' antioxidants, the first...

Defence. Attack. Symbolism. The development of warfare in any society provides an evocative glance into the lives (and deaths) of our predecessors. This is never more the case than with that most enticing of ancient civilizations, Ancient Egypt. Follow Rebecca Dean through the fascinating world of mysterious figures such as...

...