Giant radio pulses of the millisecond pulsar B1937+21 were recorded with the S2 VLBI system at 1.65 GHz with NASA/JPL’s 70-m radio telescope at Tidbinbilla, Australia. These pulses have been observed as strong as 65 000 Jy with widths ≤ 15 ns, corresponding to a brightness temperature Tb ≥ 5 · 10 39 K, the highest observed in the universe. The vast majority of these pulses occur in a 5.8 μs and...

NK models provide a family of tunably rugged fitness landscapes used in a wide range of evolutionary computation studies. It is well known that the average height of local optima regresses to the mean of the landscape with increasing ruggedness, K. This fact has been confirmed with both theoretical studies of landscape structure and empirical studies of evolutionary search. We show mathematical...

Published as a “predictive paper”, accompaning a reprint of “A Day in the Life of a Student in 2012”, in the IEEE Proceedings, September 1999. © 1999 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any...

This paper presents an improvement of the Bandwidth Inheritance Protocol (BWI), the natural extension of the well-known Priority Inheritance Protocol (PIP) to resource reservation schedulers. The modified protocol allows for a better management of nested critical section, removes unneeded overheads in the management of task block and unblock events, and introduces a run-time deadlock detection ...

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We consider representations of the Virasoro algebra, a one-dimensional central extension of the Lie algebra of vectorfields on the unit circle. Positive-energy, highest weight and Verma representations are defined and investigated. The Shapovalov form is introduced, and we study Kac formula for its determinant and some consequences for unitarity and degeneracy of irreducible highest weight repr...