Spatial variations in road collision propensities in London

Propensity to be involved in a road traffic collision in Greater London is likely to depend on many factors, including personal mobility, lifestyle, behaviour, neighbourhood characteristics and environment. This paper seeks to identify in terms of geodemographic type the propensity of individuals to be involved in collisions and to examine geographic variations in such propensities with distance from Central London. Results for Central London suggest only a small number of Mosaic types portray a higher than average index score (over 100), translating into a higher risk for a smaller proportion of London’s geodemographic types. This contrasts with results which show a larger number of Mosaic classifications having higher than average index scores further from Central London. The results highlight a need, through enhanced spatial analysis, for better understanding of the spatially incidence of collisions which are putting at risk the lives of London residents

Digital synchronizer Patent

Digital synchronizer for extracting binary data in receiver of PSK/PCM communication syste

Boundary regularity, uniqueness and non-uniqueness for AH Einstein metrics on 4-manifolds

This paper studies several aspects of asymptotically hyperbolic Einstein metrics, mostly on 4-manifolds. We prove boundary regularity (at infinity) for such metrics and establish uniqueness under natural conditions on the boundary data. By examination of explicit black hole metrics, it is shown that neither uniqueness nor finiteness holds in general for AH Einstein metrics with a prescribed conformal infinity. We then describe natural conditions which are sufficient to ensure finiteness.Comment: 33pp, gap in one proof fixed, exposition improved. To appear in Advances in Mat

Binary Number Sorter-Patent

Binary number sorter for arranging numbers in order of magnitud

Block encoders for Reed-Muller codes

Encoding algorithms generate a 32 x 64-bit matrix Reed-Muller code from a 6-bit orthogonal code-word. This increases error-free reception by a high rate telemetry channel under adverse signal noise with minimal use of additional hardware