David Meredith

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We investigate the requirements of Scientific Workflows in context of the Business Process Execution Language for Web Services (BPEL4WS/ BPEL. The complexity, unpredictability and inter-dependency of the components in a scientific workflow often demand flexibility in a workflowlanguage in order to support; 1) exception handling, 2) recovery from uncertain(More)
An abnormal respiratory rate is often the earliest sign of critical illness. A reliable estimate of respiratory rate is vital in the application of remote telemonitoring systems, which may facilitate early supported discharge from hospital or prompt recognition of physiological deterioration in high-risk patient groups. Traditional approaches use analysis(More)
This paper presents work undertaken to integrate the future UK national Shibboleth infrastructure with the UK's National Grid Service (NGS). Our work, ShibGrid, provides both transparent authentication for portal based Grid access and a credential transformation service for users of other Grid access methods. The ShibGrid support for portal-based(More)
We provide a critical evaluation of the different Web Service styles and approaches to data-binding and validation for use in 'data-centric' scientific applications citing examples and recommendations based on our experiences. The current SOAP API's for Java are examined, including the Java API for XML-based remote procedure calls (JAX-RPC) and Document(More)
This paper investigates the use of the Business Process Execution Language for Web services (BPEL4WS/ BPEL) for managing scientific workflows. The complexity, unpredictability and inter-dependency of the components in a scientific workflow often demand great flexibility in a workflow-language in order to support; 1) exception handling, 2) recovery from(More)
The accumulation and relatively rapid removal of fluid in haemodialysis patients is often accompanied by intradialytic hypotension (IDH). Current patient monitoring during haemodialysis includes intermittent measurements of tympanic temperature, blood pressure and haematocrit. However, this information is mostly used retrospectively rather than as a means(More)
Users access the National Grid Service using individual personal certificates from a trusted Certification Authority. However, the central role of the NGS in UK e-Science makes it desirable that users can use their institutional id to access Grid resources. The UK Federation is deploying a Shibboleth infrastructure to ease access from higher and further(More)
Intradialytic hypotension (IDH) is a detrimental complication of maintenance hemodialysis, but how it is defined and reported varies widely in the literature. European Best Practice Guideline and Kidney Disease Outcomes Quality Initiative guidelines require symptoms and a mitigating intervention to fulfill the diagnosis, but morbidity and mortality outcomes(More)
1. Introduction The CCLRC e-Science Centre is working on a number of UK e-Research projects supporting access to large research facilities such as the neutron spallation source ISIS, the Synchrotron Radiation Source (SRS) and the Central Laser Facility (CLF) and the new synchroton light source, Diamond, in addition to the National Grid Service and the HPCx(More)