S-matrices for spinor particles on Reissner-Nordstr\"{o}m black holes

The scattering problems arising when considering the contribution of the topologically inequivalent configurations of the spinors on Reissner-Nordstr\"{o}m black holes to the Hawking radiation are correctly stated. The corresponding $S$-matrices are described and presented in the form convenient to numerical computations.Comment: 11 pages, LaTe

Can the general fraud offence 'get the law right'? Some perspectives on the 'problem' of financial crime

The Fraud Bill, which received Royal Assent on 8 November 2006, created an offence of fraud in English criminal law which marks a departure of utmost significance from the approach adopted hitherto, whereby a number of related offences cover behaviour deemed to amount to fraud. To mark the passage of the Fraud Act 2006 into law, this article examines the references which were made during its consideration in Parliament to fraud as activity which is serious and which is often erroneously portrayed as 'victimless' crime. In joining these key criminal policy-making debates with academic study of white-collar crime, it will be suggested that as yet too little attention is being paid to 'ambiguous' popular perceptions of financial crimes for there to be confidence that the fraud offence will, in the words of the current Solicitor-General, 'get the law right'

Light-Front QCD and the Constituent Quark Model

A general strategy is described for deriving a constituent approximation to QCD, inspired by the constituent quark model and based on light-front quantization. Some technical aspects of the approach are discussed, including a mechanism for obtaining a confining potential and ways in which spontaneous chiral symmetry breaking can be manifested. (Based on a talk presented by K.G. Wilson at ``Theory of Hadrons and Light-Front QCD,'' Polana Zgorzelisko, Poland, August 1994.)Comment: 14 pages, LaTeX, no figure

An improved algorithm for evaluating trellis phase codes

A method is described for evaluating the minimum distance parameters of trellis phase codes, including CPFSK, partial response FM, and more importantly, coded CPM (continuous phase modulation) schemes. The algorithm provides dramatically faster execution times and lesser memory requirements than previous algorithms. Results of sample calculations and timing comparisons are included

Research on spacecraft electrical power conversion

The steady state characteristics and starting behavior of some widely used self-oscillating magnetically coupled square wave inverters were studied and the development of LC-tuned square wave inverters is reported. An analysis on high amplitude voltage spikes which occur in dc-to-square-wave parallel converters shows the importance of various circuit parameters for inverter design and for the suppression of spikes. A computerized simulation of an inductor energy storage dc-to-dc converter with closed loop regulators and of a preregulating current step-up converter are detailed. Work continued on the computer aided design of two-winding energy storage dc-to-dc converters