GLOBAL GRID USER SUPPORT: THE MODEL AND EXPERIENCE IN LHC COMPUTING GRID (2008)
The organization and management of the user support in a global e-science computing infrastructure, such as the Worldwide LHC Computing Grid, is one of the challenges of the Grid. Given the widely...
Generation Of High Purity Cw Proton Beams From Microwave Driven Sources * (2007)
David Spence And, David Spence, Keith R. Lykke, Technology Development
INTRODUCTION High current cw proton sources of high reliability are a current requirement for several proposed accelerator applications, including spallation neutron sources and accelerator...
Direct writing of guided wave devices inside bulk glass using femtosecond lasers (2006)
Ams, Martin, Marshall, Graham D, Spence, David, Dawes, Judith M, Piper, James A, Withford, Michael J
We review femtosecond laser-direct write inscription of guided wave structures in bulk glass and discuss our recent demonstrations of a range of 2- and 3-D photonic devices using this technique.
Direct writing of guided wave devices inside bulk glass using femtosecond lasers (2006)
Ams, Martin, Marshall, Graham D, Spence, David, Dawes, Judith M, Piper, James A, Withford, Michael J
We review femtosecond laser-direct write inscription of guided wave structures in bulk glass and discuss our recent demonstrations of a range of 2- and 3-D photonic devices using this technique.
Shibgrid: Shibboleth access for the uk national grid service, e-science 0: 75 (2006)
David Spence, Neil Geddes, Jens Jensen, Andrew Richards, Matthew Viljoen, Andrew Martin, ...
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...
Location based placement of whole distributed systems (2005)
David Spence, Steven Hand, Jon Crowcroft, Tim Harris
The high bandwidth and low latency of the modern internet has made possible the deployment of distributed computing platforms. The XenoServer platform provides a distributed computing platform open...
Circular Networks Status of this Memo Diameter Network Access Server Application (2004)
draft-ietf-aaa-diameter-nasreq-14.txt
Circular Logic Status of this Memo Diameter Network Access Server Application (2003)
Internet-draft Black, David Spence, David Mitton
draft-ietf-aaa-diameter-nasreq-11.txt
Xenosearch: Distributed resource discovery in the xenoserver open platform (2003)
We describe the XenoSearch system for performing expressive resource discovery searches in a distributed environment. We represent server meta-data, such as their locations and facilities, as points...
An implementation of a Coordinate based Location System (2003)
An implementation of a coordinate
Michael Agelvs : el renacimiento / David Spence (2001)
Traducción de: Michelangelo: the renaissance
Ellis, Michael E., Qadri, S. M. Hussain, Spence, David, Halim, Magid A., Ernst, Peter, Clink, Hugh, ...
ON A PAINLEVÉ-TYPE BOUNDARY-VALUE PROBLEM (1984)
We study the existence and uniqueness of solutions to the two-point boundary-value problem y″ = y2 – x with y(0) = 0 and y(x) {small tilde} + √x as x→ ∞ We establish uniqueness of a...