Who’s responsible for these Blues?: Reflecting on the murder of Armstrong Todd in Bebe Moore Campbell\u27s YOUR BLUES AIN\u27T LIKE MINE

This article is featured in the journal Tapestries: Interwoven voices of local and global identities, volume 4

The effect of FPU architecture on a dynamic precision algorithm for the solution of differential equations

Solution of lnitial Value Problems (IVPs) is an important application in scientific computing. Methods for solving these problems use techniques for reducing the error and increasing the speed of the computation. This paper introduces a class of algorithms which dynamically reconfigure their operating parameters to reduce the computation time. By dynamically varying the precision of the arithmetic being performed, it is possible to obtain dramatic speedups on certain architectures when solving IVPs. This paper illustrates how various architectures impact on a dynamic precision version of the Runge-Kutta-Fehlberg algorithm. It is shown that a speedup of over 30 percent is possible for both massively parallel processors and vector supercomputers

Learning laboratory projects: deliver sustainable community through improving the skills of built environment professionals

Generic skills deficiencies in the built environment professions have been recognised recently by government, professional bodies and employers in the UK, which has jeopardised the delivery of sustainable urban regeneration enshrined in the ‘new urban agenda’. Consequently a wide variety of initiatives have been lunched national wide in searching for potential solutions to address the issue. These include the establishment of Academy for Sustainable Communities (ASC) and its pilot project to set up ‘Learning laboratory’ in each English region. This paper discourses the background of Learning laboratory Projects and one ongoing case in South East England. It draws on the preliminary work of a consultancy team in the University of Greenwich involving these projects

Hang With Your Buddies to Resist Intersection Attacks

Some anonymity schemes might in principle protect users from pervasive network surveillance - but only if all messages are independent and unlinkable. Users in practice often need pseudonymity - sending messages intentionally linkable to each other but not to the sender - but pseudonymity in dynamic networks exposes users to intersection attacks. We present Buddies, the first systematic design for intersection attack resistance in practical anonymity systems. Buddies groups users dynamically into buddy sets, controlling message transmission to make buddies within a set behaviorally indistinguishable under traffic analysis. To manage the inevitable tradeoffs between anonymity guarantees and communication responsiveness, Buddies enables users to select independent attack mitigation policies for each pseudonym. Using trace-based simulations and a working prototype, we find that Buddies can guarantee non-trivial anonymity set sizes in realistic chat/microblogging scenarios, for both short-lived and long-lived pseudonyms.Comment: 15 pages, 8 figure

The Mystery of Capital and the Construction of Social Reality

John Searle’s The Construction of Social Reality and Hernando de Soto’s The Mystery of Capital shifted the focus of current thought on capital and economic development to the cultural and conceptual ideas that underpin market economies and that are taken for granted in developed nations. This collection of essays assembles 21 philosophers, economists, and political scientists to help readers understand these exciting new theories