The state of the art: development of the research degree in the UK: part 1

This is the first in a series of two articles which consider the evolution of the research degree from a historical and from a practice-based perspective, which will also consider the Leeds Metropolitan University context. This first paper charts the development of the research degree in the UK, while the second paper (to follow in a future issue of the ALT Journal) considers the implications of these developments, particularly their implications for supervisors, focusing on activities at our own University

A More or Less Unequal World? World Income Distribution in the 20th Century

Statistical studies are hardly needed to prove the existence of immense material inequality between human beings. It is evident to anyone who walks down the street in most major cities or watches a television newscast which jumps from images of famine in Angola to the business or the football transfer news. This article takes the existence of great inequality as given but discusses the various ways in which that inequality can be and is measured and surveys evidence about how inequality on a world scale has evolved during the last century and especially since 1980.

Insights from Project FeederWatch: Changes in the abundance and occurrence of birds in New Hampshire over the past 24 years

Changes in the climate and land use over time can lead to changes in the composition of wildlife communities. Using data from Project FeederWatch, we examine trends in the abundance and occurrence of birds documented in the winters from 1988 to 2012 in New Hampshire. Changes in abundance and occurrence are summarized for individual bird species as well as across species based on life history traits. In addition, we examined trends for the state as a whole as well as in subregions. We discuss these changes with regards to the variations of climate and land use that are occurring throughout New Hampshire

Merging Schemes: An Ecomomic Analysis of Defined Benefit Pension Scheme Merger Criteria

The conditions under which pension schemes merge is an important issue that has been under-researched. Mergers can affect the strength of the sponsor’s covenant and the balance of power between the trustees and the sponsor, as well as the scheme funding ratio. This paper sets out two financial criteria to be met by any pension scheme merger:- no profit or loss on merging with another scheme; and no dilution of the funding ratio. After defining a merger basis for valuing the assets and liabilities, and allowing for adjustments to the funding ratio via side receipts and payments; it is shown that, whether or not these criteria are met, depends on the state of the financial markets

A Skyrme lattice with hexagonal symmetry

Recently it has been found that the structure of Skyrmions has a close analogy to that of fullerene shells in carbon chemistry. In this letter we show that this analogy continues further, by presenting a Skyrme field that describes a lattice of Skyrmions with hexagonal symmetry. This configuration, a novel `domain wall' in the Skyrme model, has low energy per baryon (about 6% above the Faddeev-Bogomolny bound) and in many ways is analogous to graphite. By comparison to the energy per baryon of other known Skyrmions and also the Skyrme crystal, we discuss the possibility of finding Skyrmion shells of higher charge.Comment: 12 pages, 1 figure. To appear in Phys. Lett.

Octahedral and Dodecahedral Monopoles

It is shown that there exists a charge five monopole with octahedral symmetry and a charge seven monopole with icosahedral symmetry. A numerical implementation of the ADHMN construction is used to calculate the energy density of these monopoles and surfaces of constant energy density are displayed. The charge five and charge seven monopoles look like an octahedron and a dodecahedron respectively. A scattering geodesic for each of these monopoles is presented and discussed using rational maps. This is done with the aid of a new formula for the cluster decomposition of monopoles when the poles of the rational map are close together.Comment: uuencoded latex, 20 pages, 2 figures To appear in Nonlinearit

SU(N) Monopoles and Platonic Symmetry

We discuss the ADHMN construction for SU(N) monopoles and show that a particular simplification arises in studying charge N-1 monopoles with minimal symmetry breaking. Using this we construct families of tetrahedrally symmetric SU(4) and SU(5) monopoles. In the moduli space approximation, the SU(4) one-parameter family describes a novel dynamics where the monopoles never separate, but rather, a tetrahedron deforms to its dual. We find a two-parameter family of SU(5) tetrahedral monopoles and compute some geodesics in this submanifold numerically. The dynamics is rich, with the monopoles scattering either once or twice through octahedrally symmetric configurations.Comment: 14pp, RevTex, two figures made of six Postscript files. To appear in the Journal of Mathematical Physic

The best of both worlds? Online ties and the alternating use of social network sites in the context of migration

While an ever-growing body of research is concerned with user behavior on individual social network sites (SNSs)—mostly Facebook—studies addressing an alternating use of two or more SNS are rare. Here, we investigate the relationship between alternating SNS use and social capital in the context of migration. Alternating SNS use avoids some of the problems associated with large networks located on one site; in particular the management of different social or cultural spheres. Not only does this strategy hold potential for increased social capital, it also provides a particular incentive for migrants faced with the challenge of staying in touch with back home and managing a new social environment. Two survey studies are presented that focus on the relationship between alternating SNS use and online ties in a migrant context involving Indian nationals. Study 1 looked at migration within India, whereas Study 2 compared international with domestic SNS users. In both studies, alternating SNS use added to the prediction of online network size and accounted for differences in network size found for migrant and non-migrant users. Differences were due to the number of peripheral ties, rather than core ties. Findings suggest that alternating SNS use may constitute a compensatory strategy that helps to overcome lower levels of socializing represented through a single SNS

Lipoproteins of Mycobacterium tuberculosis : an abundant and functionally diverse class of cell envelope components

Mycobacterium tuberculosis remains the predominant bacterial scourge of mankind. Understanding of its biology and pathogenicity has been greatly advanced by the determination of whole genome sequences for this organism. Bacterial lipoproteins are a functionally diverse class of membrane-anchored proteins. The signal peptides of these proteins direct their export and post-translational lipid modification. These signal peptides are amenable to bioinformatic analysis, allowing the lipoproteins encoded in whole genomes to be catalogued. This review applies bioinformatic methods to the identification and functional characterisation of the lipoproteins encoded in the M. tuberculosis genomes. Ninety nine putative lipoproteins were identified and so this family of proteins represents ca. 2.5% of the M. tuberculosis predicted proteome. Thus, lipoproteins represent an important class of cell envelope proteins that may contribute to the virulence of this major pathogen

Rigorous and relevant? The challenge of managing and assessing learning on a work placement

This paper is based upon the experiences of a group of employers and students on a work placement module. It forms part of the evaluation of an accredited module within a programme leading to the award of a pre-vocational competence-based degree at a post-1992 university. Although this particular course focuses on health and social care, the work placement element involves principles which are applicable to a wide range of programmes; evidence-based assessment through the use of a learning portfolio is a feature of this degree