In 1949, several decades before the birth of the PC, computer scientist John von Neumann announced, “It would appear we have reached the limits of what is possible to achieve with computer technology.” He quickly and prudently added, “One should be careful with such statements; they tend to sound pretty silly in five years.” More than half a century later, it is Neumann’s caveat rather than his...

This paper describes the ARGUS prototype, a high-density, low-power supercomputer built from an IXIA network analyzer chassis and load modules. The prototype is configured as a diskless distributed system that is scalable to 128 processors in a single 9U chassis. The entire system has a footprint of 0.25 m2 (2.5 ft2), a volume of 0.09 m3 (3.3 ft3) and maximum power consumption of less than 2200...

Henry David Thoreau once posed a Question which now challenges us as philosophers who would take up the issue of ethics and animals: "What sort of philosophers are we, who know absolutely nothing about the origin and destiny of cats?" This Question is a spur to us. Even if we object that the Question requires Qualification, that "absolutely nothing" is too strong. that philosophers have indeed ...

The mechanism of the AV nodal Wenckebach phenomenon was studied in 25 dogs by multiple atrial and His bundle electrogram (HBE) recordings. During ventricular stimulation with 1:1 retrograde conduction, the interval from the stimulus artifact to the retrograde His deflection (S-H interval) remained constant. Decreasing the cycle length of stimulation (CLS) resulted in retrograde AV nodal Wenckeb...