Sea level rise contributions from the Pine Island Glacier (PIG) are strongly modulated by the backstress that its floating extension – Pine Island Ice Shelf (PIIS) – exerts on the adjoining grounded ice. The front of PIIS has recently retreated significantly via calving, and satellite and theoretical analyses have suggested further retreat is inevitable. As well as inducing an instantaneous increase in ice flow, retreat of the PIIS front may result in increased ocean melting, by relaxing the topographic barrier to warm ocean water that is currently provided by a prominent seabed ridge. Recently published research (Bradley and others, 2022a) has shown that PIIS may exhibit a strong melting response to calving, with melting close to the PIG grounding line always increasing with ice front retreat. Here, we summarise this research and, additionally, place the results in a glaciological context by comparing the impact of melt-induced and ice-dynamical changes in the ice shelf thinning rate. We find that while PIG is expected to experience rapid acceleration in response to further ice front retreat, the mean instantaneous thinning response is set primarily by changes in melting, rather than ice dynamics. Overall, further ice front retreat is expected to lead to enhanced ice-shelf thinning, with potentially detrimental consequences for ice shelf stability.

The first demonstration of laser action in ruby was made in 1960 by T. H. Maiman of Hughes Research Laboratories, USA. Many laboratories worldwide began the search for lasers using different materials, operating at different wavelengths. In the UK, academia, industry and the central laboratories took up the challenge from the earliest days to develop these systems for a broad range of applications. This historical review looks at the contribution the UK has made to the advancement of the technology, the development of systems and components and their exploitation over the last 60 years.

Samuel Laing was a key figure in propagating both an academically respectable defense of peasant proprietors and a critique of bureaucratic central government in Victorian Britain, his writings cited and argued with by John Stuart Mill, Herbert Spencer, Walter Bagehot, and John Austin (among others). This article corrects misapprehensions that Laing was a libertarian apologist for unfettered commercialism and complacent patriotism. It situates Laing in his argumentative contexts to show him as a critic of conventional political economy who called for a “natural” society of self-governing freeholders like that he observed in Norway, but who gradually became ambivalently caught between a British commercial and aristocratic order and a Continental model of greater property diffusion and strong central government. Laing's story sheds new light on the complex afterlives of republican and civic themes in nineteenth-century Britain, and their interaction with emergent concerns over the dangers to active citizenship of both wage labor in international markets and centralizing bureaucracies.

John Stuart Mill's support for, and predictions of, co-operative production have been taken as a coherent wedding of liberal and socialist concerns, and as drawing together later nineteenth-century political economy and working-class radicalism. Despite its evident significance, the alliance of political economy and co-operative production was, however, highly conflicted, contested, and short-lived, in ways that help to shed light on the construction of knowledge of society in nineteenth-century Britain. Mill's vision should be seen as developed in contrast to the sociological and historical perspectives of Auguste Comte and Thomas Carlyle, as an attempt to hold together political economy as a valid form of knowledge with the hope of a new social stage in which commerce would be imbued with public spirit. This ideal thus involved debate about competing social futures and the tools of prediction, as well as entering debates within political economy where it was equally embattled. Even Mill's own economic logic tended more towards support of profit-sharing than co-operative production, and hopes for the latter became significantly less persuasive with the introduction of the concept of the entrepreneur into mainstream British economics during the 1870s and 1880s.

The present study aimed to investigate the development of attention skills through middle childhood and to document developmental trajectories associated with tasks of increasing attentional demands. The sample comprised 57 children (aged 5–12 years) who were divided, according to age, into three groups. Performance differences between the groups were compared on two measures, each including four subtests of increasing complexity and tapping both speed and accuracy: CogState, a computerised measure, and The Contingency Naming Test, a paper-and-pencil test. We predicted that there would be: (1) improvements in performance with increasing age, (2) deceases in performance with increasing task complexity and (3) parallel increments in performance on computer-based and paper-and-pencil measures. The results indicated that there were rapid improvements in performance on both computer-based and paper-and-pencil measures between the ages of 5 and 8 years indicated by changes in both response speed and response accuracy. In contrast, more moderate improvements were identified between the ages of 9 to 12 years and occurred mainly in the domain of speed.

All nation-states are creations of physical topography, historical circumstance, political claims, and cultural imagination. A country's identity may be the result of its material place, legal self-understanding, and (invented) national traditions, but it is also defined by certain founding myths and historical associations born of dreams and distance. The histories of the United States, Liberia, and Israel are obvious examples, in that their territories have become mythic “landscapes of memory” in their own right for many around the world, even among those who have never been there.

Despite recent advances in the understanding of Huntington's Chorea, treatment remains, at best, symptomatic and many sufferers end their days in institutional care. A recent survey established the prevalence of Huntington's Chorea in South Wales as 7·65 per 100,000. From this figure, 4,000 or more sufferers of this condition are living in the United Kingdom at present of whom 20% are in hospital or other institutional care. Although some studies have looked in passing at the degree of disability of Huntington's Chorea sufferers in hospital and found it to be considerable, staff and relatives often feel that long stay psychiatric wards are inappropriate or unnecessarily restrictive settings for these patients. This study looks at the disability of Huntington's Chorea sufferers in hospital and other institutions in order to determine the suitability of their placement and to see whether their physical and psychological needs are being met.