High-speed high-resolution plasma spectroscopy using spatial-multiplex coherence imaging techniques

We have recently obtained simultaneous two-dimensional (2D) plasmaDoppler spectroscopic images of plasma brightness, temperature, and flow fields. Using compact polarization optical methods, quadrature images of the optical coherence of an isolated spectral line are multiplexed to four quadrants of a fast charge-coupled device camera. The simultaneously captured, but distinct, images can be simply processed to unfold the plasma brightness, temperature, and flow fields. This static system, which is a spatial-multiplex variant of previously reported electro-optically modulated, temporal-multiplex coherence imaging systems, is based on a high-throughput imagingpolarizationinterferometer that employs crossed Wollaston prisms and appropriate image plane masks. Because the images are captured simultaneously, it is well suited to high-spectral-resolution, high-throughput 2D imaging of transient or rapidly changing spectroscopic scenes. To illustrate instrument performance we present recent results using a static 4-quadrant Dopplercoherence imaging on the H-1 heliac at the ANU.This work has been, in part, supported by the Australian Government Department of Education, Science and Training under the International Science Linkages program, Grant No. CG050061

Clinical governance, education and learning to manage health information

Purpose – This paper aims to suggest that the concept of clinical governance goes beyond a bureaucratic accountability structure and can be viewed as a negotiated balance between imperfectly aligned and sometimes conflicting goals within a complex adaptive system. On this view, the information system cannot be separated conceptually from the system of governance it supports or the people whose work it facilitates or hinders. Design/methodology/approach – The study, located within the English National Health Service (NHS) between 1999 and 2005, is case study based using a multi method approach to data collection within two primary care organisations (PCOs). The research strategy is conducted within a social constructionist ontological perspective. Findings – The findings reflect the following broad-based themes: mutual adjustment of a plurality of stakeholder perceptions, preferences and priorities; the development of information and communication systems, empowered by informatics; an emphasis on education and training to build capacity and capability. Research limitations/implications – Limitations of case study methodology include a tendency to provide selected accounts. These are potentially biased and risk trivialising findings. Rooted in specific context, their generalisability to other contexts is limited by the extent to which contexts are similar. Reasonable attempts were made to minimise any bias. The diversity of data collection methods used in the study was an attempt to counterbalance the limitations highlighted in one method by strength from alternative techniques. Practical implications – The paper makes recommendations in two key governance areas: education and learning to manage health information. In practice, the lessons learned provide opportunities to inform future approaches to health informatics educational programmes. Originality/value – With regard to topicality, it is suggested that many of the developmental issues highlighted during the establishment of quality improvement programmes within primary care organisations (PCGs/PCTs) are relevant in the light of current NHS reforms and move towards commissioning consortia

Elected Mayors: Leading Locally?

The directly elected executive mayor has been with us in England for more than a decade. Drawing inspiration from European and American experience (see Elcock and Fenwick, 2007) the elected mayor has appealed to both Labour and Conservative commentators in offering a solution to perceived problems of local leadership. For the Left, it offered a reinvigoration of local democracy, a champion for the locality who could stand up for the community: in one early pamphlet, a Labour councillor envisaged that an elected mayor could “...usher in a genuinely inclusive way of doing civic business as well as giving birth to an institution that encourages and values people” (Todd, 2000: 25). For the Right, it offered the opportunity to cut through the lengthy processes of local democratic institutions by providing streamlined high-profile leadership. Although inconsistent in their expectations of what the new role of executive mayor would bring, Left and Right shared a view that leadership of local areas was failing. Despite the very low turnout in referendums on whether to adopt the system, and the very small number of local areas that have done so, the prospect of more executive mayors, with enhanced powers, refuses to exit the policy arena

A three-dimensional Gaussian-beam ray-tracing program for designing interferometer/polarimeter plasma diagnostics

We have developed a three-dimensional Gaussian-beam ray-tracing program to aid in the design of infrared, far-infrared, and millimeter waveinterferometer and polarimeterdiagnostic systems for magnetic confinementfusion relevant plasma physicsexperiments. An overview of the program is presented along with a description of the ray-tracing algorithm. A model is developed for the case of diffraction of a Gaussian beam off a cylindrical grating and is shown to be in good agreement with experimental measurements. The program has been used to aid the design of the scanning-grating interferometer system for the H-1NF heliac experimental plasma device. The program is written in the Research Systems Inc. Interactive Data Language and, on a typical modern personal computer, is able to trace and render the ∼50 element three-view 44-beam H-1NF interferometer optical system in about one minute.This work was in part supported by the Australian Institute of Nuclear Science and Engineering, the Australian Research Council, and the Australian Vice-Chancellors’ Committee Commonwealth Scholarship and Fellowship Plan

Introduction, Passacaglia and Fugue by Healey Willan: A Transcription for Symphonic Band from the Organ

Thesis (M.M.)--Boston Universit

Expanded Quantum Cryptographic Entangling Probe

The paper [Howard E. Brandt, "Quantum Cryptographic Entangling Probe," Phys. Rev. A 71, 042312 (2005)] is generalized to include the full range of error rates for the projectively measured quantum cryptographic entangling probe.Comment: 4 page