Recently, a new class of feedback shift registers (FCSRs) was introduced, based on algebra over the 2-adic numbers. The sequences generated by these registers have many algebraic properties similar to those generated by linear feedback shift registers. However, it appears to be significantly more difficult to find maximal period FCSR sequences. In this paper we exhibit a technique for easily fi...

Pseudorandom sequences, with a variety of statistical properties (such as high linear span, low autocorrelation and pairwise cross-correlation values, and high pairwise hamming distance) are important in many areas of communications and computing (such as cryptography, spread spectrum communications, error correcting codes, and Monte Carlo integration). Binary sequences~ such as m-sequences, mo...

The paper concerns the quest to find acoustical parameters that describe properties of vocal fold functioning from professional singing to voice pathologies. Improved data handling within the framework of phonetogram recordings has been used to arrive at a better understanding of what acoustical parameters could tell us about vocal registers.

This study revisits the issue of tonal registers by exploring the cues used in producing and perceiving the five level tones of Black Miao. Both production and perception experiments show that non-modal phonations are very important cues for tonal contrasts. Two different kinds of non-modal phonations that either enhance pitch contrasts or provide an additional contrastive cue divide tonal leve...

We call a register r free at a node v of a program ow graph if every path in the ow graph that starts at v and ends at a read of r, contains a write to r. This note presents a series of algorithms for nding free registers, at one, at several, or at all points of a program. Their theoretical worst-case complexity does not improve over previous approaches, but experiments indicate that our algori...

Shift registers are at the heart of cryptography and error-correction. In cryptography they are the main tool for generating long pseudorandom binary sequences which can be used as keys for two communicating parties in symmetric cryptography. Practically all military cryptography makes use of them. Shift registers are also fundamental in signal analysis and frequency hopping, most recently in c...

Three different types of high-speed transistor shift registers are discussed. The high speed (3 to 5 microseconds per shift pulse) is made possible by the use of oneand two-transistor nonsaturating bistable circuits. The design of these circuits and their limitations when used .is shift register stages is discussed CAMBRIDGE MASSACHUSETTS

We give an optimal wait free implementation of an increment register An increment register is a concurrent object consisting of an integer valued register with an increment operation that atomically increments the register and returns the previous value We implement this register in a synchronous message passing model with crash failures In our implementation an increment operation halts in O l...

This article considers the establishment, purpose and conduct of knee arthroplasty registers using the Swedish register as an example. The methods of collection of appropriate data, the cost, and the ways in which this information may be used are considered.

We review the history and literature of hip resurfacing arthroplasty. Resurfacing and the science behind it continues to evolve. Recent results, particularly from the national arthroplasty registers, have spread disquiet among both surgeons and patients. A hip resurfacing arthroplasty is not a total hip replacement, but should perhaps be seen as a means of delaying it. The time when hip resurfa...