Tim Wilkinson

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BACKGROUND AND AIM The risks of recurrent intracerebral haemorrhage (ICH) vary widely (0-24%). Patients with ICH also have risk factors for ischaemic stroke (IS) and a proportion of ICH survivors re-present with an IS. This dilemma has implications for prophylactic treatment. This study aims to determine the risk of recurrent stroke events (both ICH and IS)(More)
In the mid eighties, the System Architecture Research Centre at City University developed a message-passing, UNIX compliant micro kernel (Meshix) for our own scalable distributed memory architecture (Topsy). Over the last two years we have been engaged in a research programme aimed at learning from this experience, and developing a new operating system(More)
If sensitive information is to be included in a shared web, access controls will be required. However, the complex software needed to provide a web service is prone to failure. To provide access control without relying on such software, encryption can be used. Bob is a prototype system that supports complex access control expressions through the transparent(More)
OBJECTIVE To assess the effectiveness of an activity programme in improving function, quality of life, and falls in older people in residential care. DESIGN Cluster randomised controlled trial with one year follow-up. SETTING 41 low level dependency residential care homes in New Zealand. PARTICIPANTS 682 people aged 65 years or over. INTERVENTIONS(More)
SYNOPSIS This report describes a series of bending tests to examine the influence of web slenderness on the rotation capacity of cold-formed rectangular hollow sections (RHS) for use in plastic design. The results indicate that the plastic web slenderness limits in design standards, which are based on tests of I-sections, are not conservative for RHS. There(More)
The appearance of 64-bit processors allows a new approach t o microkernel desagn From our experience with a message passang microkernel MESHIX, we discovered that a multi-address space, POSIX architecture is unsvttable for general parallel applications development Angel was therefore deszgned to provide a more flexible envtronmeni. Central to these arms is(More)
This paper describes the current position of work on City University's Topsy project. Topsy is a new message passing multicomputer architecture. It comprises a fully Unix compatible distributed kernel, called Meshix, on top of a message based software system which in turn relies on new, high speed, communications hardware, Meshnet. A overview of the machine(More)