Placing student voices at the heart of institutional dialogue

This article is based on a workshop delivered by the two authors at the SEDA Spring Conference 2008 on Engaging with Student Expectations (Flint and Oxley, 2008)

Learning from Internal Change Academy processes

A 2007/8 Research and Development Grant from SEDA under its Supporting and Leading Educational Change programme provided Sheffield Hallam University with the opportunity to undertake an extremely interesting and timely piece of work on learning from Internal Change Academy processes. A presentation to the SEDA Spring Conference 2009 focused on understanding the value of Internal Change Academies as a model for leading educational change and demonstrated how a simple benchmarking exercise may provide a rich source of data in leading change processes. This article focuses on the broader lessons learnt about change rather than on the practicalities and the different models of running an Internal Change Academy. That information is available in the project final report (Flint and Oxley, 2009)

Money and inflation in a nonlinear model

A nonlinear model of inflation and growth, with a fixed rate of money growth, is developed and its global dynamics analysed. These are compared with the local, linearised dynamics of the model. It is shown that the global dynamics of the model plausibly predict hyperinflationary bubbles, which are not present in the linearised version. Numerical simulations of the model are presented.Money, inflation, nonlinearity.

Experimentally estimated dead space for GaAs and InP based planar Gunn diodes

The authors would like to thank the staff of the James Watt Nanofabrication Centre at the University of Glasgow for help in fabricating the devices which is reported in this paper. ‘Part of this work was supported by ESPRC through EP/H011862/ 1, and EP/H012966/1.Peer reviewedPublisher PD

Feynman graph polynomials

The integrand of any multi-loop integral is characterised after Feynman parametrisation by two polynomials. In this review we summarise the properties of these polynomials. Topics covered in this article include among others: Spanning trees and spanning forests, the all-minors matrix-tree theorem, recursion relations due to contraction and deletion of edges, Dodgson's identity and matroids.Comment: 35 pages, references adde

Nonpolar resistance switching of metal/binary-transition-metal oxides/metal sandwiches: homogeneous/inhomogeneous transition of current distribution

Exotic features of a metal/oxide/metal (MOM) sandwich, which will be the basis for a drastically innovative nonvolatile memory device, is brought to light from a physical point of view. Here the insulator is one of the ubiquitous and classic binary-transition-metal oxides (TMO), such as Fe2O3, NiO, and CoO. The sandwich exhibits a resistance that reversibly switches between two states: one is a highly resistive off-state and the other is a conductive on-state. Several distinct features were universally observed in these binary TMO sandwiches: namely, nonpolar switching, non-volatile threshold switching, and current--voltage duality. From the systematic sample-size dependence of the resistance in on- and off-states, we conclude that the resistance switching is due to the homogeneous/inhomogeneous transition of the current distribution at the interface.Comment: 7 pages, 5 figures, REVTeX4, submitted to Phys. Rev. B (Feb. 23, 2007). If you can't download a PDF file of this manscript, an alternative one can be found on the author's website: http://staff.aist.go.jp/i.inoue

Micro-cooler Enhancements by Barrier Interface Analysis

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