80 research outputs found
e-Science and its implications
No full textAfter a definition of e-science and the Grid, the paper begins with an overview of the technological context of Grid developments. NASA’s Information Power Grid is described as an early example of a ‘prototype production Grid’. The discussion of e-science and the Grid is then set in the context of the UK e-Science Programme and is illustrated with reference to some UK e-science projects in science, engineering and medicine. The Open Standards approach to Grid middleware adopted by the community in the Global Grid Forum is described and compared with community based standardization processes used for the Internet, MPI, Linux and the Web. Some implications of the imminent data deluge that will arise from the new generation of e-science experiments in terms of archiving and curation are then considered. The paper concludes with remarks about social and technological issues posed by Grid enabled ‘collaboratories’ in both scientific and commercial contexts
Cyberinfrastructure for e-Science
No full textHere we describe the requirements of an e-Infrastructure to enable faster, better, and different scientific research capabilities. We use two application exemplars taken from the United Kingdom’s e-Science Programme to illustrate these requirements and make the case for a service-oriented infrastructure. We provide a brief overview of the UK ‘‘plug-and-play composable services’’ vision and the role of semantics in such an e-Infrastructure
The UK e-Science Programme and the Grid
No full textThis paper describes the £120M UK ‘e-Science’ initiative and begins by defining what is meant by the term e-Science. The majority of the £120M, some £85M, is funding large-scale e-Science pilot projects in many areas of science and engineering. The infrastructure needed to support such projects must permit routine sharing of distributed and heterogeneous computational and data resources as well as supporting effective collaboration between groups of scientists. Such an infrastructure is commonly referred to as the Grid. The remaining funds, some £35M, constitute the e-Science ‘Core Programme’. The goal of this Core Programme is to advance the development of robust and generic Grid middleware in collaboration with industry. The key elements of the Core Programme will be described including details of a UK e-Science Grid testbed. The pilot e-Science projects that have so far been announced are then briefly described. These projects span a range of disciplines from particle physics and astronomy to engineering and healthcare, and illustrate the breadth of the UK e-Science Programme. In addition to these major e-Science projects, the Core Programme is funding a series of short-term e-Science demonstrators across a number of disciplines as well as projects in network traffic engineering and some international collaborative activities. We conclude with some remarks about the need to develop a data architecture for the Grid that will allow federated access to relational databases as well as flat files
Classical free-streamline flow over a polygonal obstacle
No full textThis is an open access article under the CC BY license.In classical Kirchhoff flow, an ideal incompressible fluid flows past an obstacle and around a motionless wake bounded by free streamlines. Since 1869 it has been known that in principle, the two-dimensional Kirchhoff flow over a polygonal obstacle can be determined by constructing a conformal map onto a polygon in the log-hodograph plane. In practice, however, this idea has rarely been put to use except for very simple obstacles, because the conformal mapping problem has been too difficult. This paper presents a practical method for computing flows over arbitrary polygonal obstacles to high accuracy in a few seconds of computer time. We achieve this high speed and flexibility by working with a modified Schwarz-Christoffel integral that maps onto the flow region directly rather than onto the log-hodograph polygon. This integral and its associated parameter problem are treated numerically by methods developed earlier by Trefethen for standard Schwarz-Christoffel maps. © 1986. © 2014 Elsevier B.V., All rights reserved.* Supported by an NSF Mathematical Sciences Postdoctoral Fellowship, by the U.S. Dept. of Energy under contract DE-AC02-76-ER03077-V, and by the Institute for Computer Applications in Science and Engineering, NASA Langley Research Center. This work was performed while the author was at ICASE and at the Courant Inistitute of Mathematical Sciences
Mr. Pat McDonald, Director of "Key Business Technologies", Department of Trade and Industry, United Kingdom
No full textPhotos 01,02: Mr Pat McDonald, Director of "Key Business Technologies", Department of Trade and Industry, UK (third from left, front) in front of the ATLAS End-Cap Toroid vacuum vessel in the ATLAS assembly hall with, from left to right, Fred Wickens, Chris Jones, Peter Fletcher, Ray Browne, Neil Geddes, Jim Fleming, Anne Trefethen, Jim Wilson, Edwin Towndrow, Sharon Bonfield, Guy Rickett, Ken Smith, Peter Jenni. Photo 03: Mr Pat McDonald, Director of "Key Business Technologies", Department of Trade and Industry, UK (fifth from left) visiting ATLAS assembly hall with, from left to right, Jim Wilson, Peter Jenni, Ken Smith, Edwin Towndrow, Ray Brown, Chris Jones, Neil Geddes, Sharon Bonfield, Anne Trefethen, Jim Fleming, Fred Wickens. Photo 04: Mr Pat McDonald, Director of "Key Business Technologies", Department of Trade and Industry, UK (fourth from right) in front of the ATLAS Barrel Toroid coil casing in the ATLAS assembly hall with, from left to right, Peter Jenni, Jim Wilson, Guy Rickett, Anne Trefethen, Sharon Bonfield, in the foreground Chris Jones, Ray Browne, Ken Smith and Jim Fleming
Creating an inclusive workplace
No full textAt the University of Oxford we are committed to establishing an inclusive culture, where everyone can contribute and flourish regardless of visible and invisible differences. Through consultation with both external and internal communities last year, the Race Equality Task Force drafted an extensive set of measures across seven themes. The measures were published for consideration by the collegiate University and 1167 staff and students responded and provided a great deal of input that is now helping to shape our Race Equality strategic plan. In this presentation I will touch on the issues that the Task Force discovered through their work and the prioritisation of activity that is the result of the their work and that of colleagues across the institution
Developing a high-performance computing/numerical analysis roadmap
No full textA roadmap activity in the UK has leveraged US and European efforts for identifying the challenges and barriers in the development of high-performance computing (HPC) algorithms and software. The activity has identified the Grand Challenge to provide: 1. Algorithms and software that application developers can reuse in the form of high-quality, high performance, sustained software components, libraries and modules 2. A community environment that allows the sharing of software, communication of interdisciplinary knowledge and the development of appropriate skills. Through a series of workshops and discussions with UK HPC application groups and numerical analysts, five areas of challenge have emerged. © The Author(s), 2009
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