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Microstructures, including crystallographic fabric, within the margin of streaming ice can exert strong control on flow dynamics. To characterize a natural setting, we retrieved three cores, two of which reached bed, from the flank of Jarvis Glacier, eastern Alaska Range, Alaska. The core sites lie ~1 km downstream of the source, with abundant water present in the extracted cores and at the base of the glacier. All cores exhibit dipping layers, a combination of debris bands and bubble-free domains. Grain sizes coarsen on average approaching the lateral margin. Crystallographic orientations are more clustered and with c-axes closer to horizontal nearer the lateral margin. The measured fabric is sufficiently weak to induce little mechanical anisotropy, but the data suggest that despite the challenging conditions of warm ice, abundant water and a short flow distance, many aspects of the microstructure, including measurable crystallographic fabric, evolved in systematic ways.
Psychotic experiences (PE) are highly prevalent in childhood and are known to be associated with co-morbid mental health disorders and functional difficulties in adolescence. However, little is known about the long-term outcomes of young people who report PE.
As part of the Adolescent Brain Development Study, 211 young people were recruited in childhood (mean age 11.7 years) and underwent detailed clinical interviews, with 25% reporting PE. A 10 year follow-up study was completed and 103 participants returned (mean age 20.9 years). Structured clinical interviews for DSM-5 (SCID-5) and interviewer-rated assessments of functioning were conducted. A detailed neuropsychological battery was also administered. Analyses investigated group differences between those who had ever reported PE and controls in early adulthood.
The PE group was at a significantly higher risk of meeting DSM-5 criteria for a current (OR 4.08, CI 1.16–14.29, p = 0.03) and lifetime psychiatric disorder (OR 3.27, CI 1.43–7.47, p = 0.005). They were also at a significantly higher risk of multi-morbid lifetime psychiatric disorders. Significantly lower scores on current social and global functioning measures were observed for the PE group. Overall, there were no differences in neuropsychological performance between groups apart from significantly lower scores on the Stroop Word task and the Purdue Pegboard task for the PE group.
Our findings suggest that reports of PE are associated with poorer mental health and functional outcomes in early adulthood, with some persisting cognitive and motor deficits. Young people who report such symptoms could be considered a target group for interventions to aid functional outcomes.
For W. B. Yeats, George Berkeley’s youthful reference to ‘We Irish’ marked the beginning of a national intellect based on a perceived distinction between Irish philosophical idealism and the materialism supposedly characteristic of the English. Upon this enigmatic remark of Berkeley’s, Yeats erected a system that offered to illuminate the national characteristics of eighteenth-century authors – most importantly, Swift, Goldsmith, and Burke – including a profound suspicion of abstract ideas. The wealth of eighteenth-century Irish writing, still in the process of recuperation, is not easily accommodated within Yeats’s scheme, however, more readily revealing diversity than similarity. Yet the fact of Irish birth, education, or employment, as much as their subject matter, did mark out writers as Irish, whether the identification was self-willed or imposed by those outside the island. The ways in which national identity manifested itself between 1700 and 1780 are explored through examples of prose, verse, and drama written or published both in Ireland and abroad. In so doing, the chapter outlines the first halting attempts, by male and female writers including John Toland, George Berkeley, Jonathan Swift, Henry Brooke, Frances Sheridan, Elizabeth Sheridan, and Edmund Burke, to create the idea of a national Irish literature in English.
We developed a tilt sensor for studying ice deformation and installed our tilt sensor systems in two boreholes drilled close to the shear margin of Jarvis Glacier, Alaska to obtain kinematic measurements of streaming ice. We used the collected tilt data to calculate borehole deformation by tracking the orientation of the sensors over time. The sensors' tilts generally trended down-glacier, with an element of cross-glacier flow in the borehole closer to the shear margin. We also evaluated our results against flow dynamic parameters derived from Glen's exponential flow law and explored the parameter space of the stress exponent n and enhancement factor E. Comparison with values from ice deformation experiments shows that the ice on Jarvis is characterized by higher n values than that is expected in regions of low stress, particularly at the shear margin (~3.4). The higher n values could be attributed to the observed high total strains coupled with potential dynamic recrystallization, causing anisotropic development and consequently sped up ice flow. Jarvis' n values place the creep regime of the ice between basal slip and dislocation creep. Tuning E towards a theoretical upper limit of 10 for anisotropic ice with single-maximum fabric reduces the n values by 0.2.
One of the foundations of product design is the division between production and design. This division manifests as designers aspiring to create fixed iconic archetypes and production replicates endlessly in thousands or millions. Today innovation and technological change are challenging this idea of product design and manufacturing. The evolution of Rapid Prototyping into Additive Manufacturing (AM), is challenging the notion of mass manufacture and consumer value. As AM advances in capability and capacity, the ability to economically manufacture products in low numbers with high degrees of personalisation poses questions of the accepted product development process. Removing the need for dedicated expensive tooling also eliminates the cyclical timescales and commitment to fixed designs that investment in tooling demands. The ability to alter designs arbitrarily, frequently and responsively means that the traditional design process need not be applied and because of this, design processes and practice might be radically different in the future. In this paper, we explore this possible evolution by drawing parallels with principles and development models found in software development.
The deep subsurface of other planetary bodies is of special interest for robotic and human exploration. The subsurface provides access to planetary interior processes, thus yielding insights into planetary formation and evolution. On Mars, the subsurface might harbour the most habitable conditions. In the context of human exploration, the subsurface can provide refugia for habitation from extreme surface conditions. We describe the fifth Mine Analogue Research (MINAR 5) programme at 1 km depth in the Boulby Mine, UK in collaboration with Spaceward Bound NASA and the Kalam Centre, India, to test instruments and methods for the robotic and human exploration of deep environments on the Moon and Mars. The geological context in Permian evaporites provides an analogue to evaporitic materials on other planetary bodies such as Mars. A wide range of sample acquisition instruments (NASA drills, Small Planetary Impulse Tool (SPLIT) robotic hammer, universal sampling bags), analytical instruments (Raman spectroscopy, Close-Up Imager, Minion DNA sequencing technology, methane stable isotope analysis, biomolecule and metabolic life detection instruments) and environmental monitoring equipment (passive air particle sampler, particle detectors and environmental monitoring equipment) was deployed in an integrated campaign. Investigations included studying the geochemical signatures of chloride and sulphate evaporitic minerals, testing methods for life detection and planetary protection around human-tended operations, and investigations on the radiation environment of the deep subsurface. The MINAR analogue activity occurs in an active mine, showing how the development of space exploration technology can be used to contribute to addressing immediate Earth-based challenges. During the campaign, in collaboration with European Space Agency (ESA), MINAR was used for astronaut familiarization with future exploration tools and techniques. The campaign was used to develop primary and secondary school and primary to secondary transition curriculum materials on-site during the campaign which was focused on a classroom extra vehicular activity simulation.
St Andrews was of tremendous significance in medieval Scotland. Its importance remains readily apparent in the buildings which cluster the rocky promontory jutting out into the North Sea: the towers and walls of cathedral, castle and university provide reminders of the status and wealth of the city in the Middle Ages. As a centre of earthly and spiritual government, as the place of veneration forScotland's patron saint and as an ancient seat of learning, St Andrews was the ecclesiastical capital of Scotland. This volume provides the first full study of this special and multi-faceted centre throughout its golden age. The fourteen chapters use St Andrews as a focus for the discussion of multiple aspects of medieval life in Scotland. They examine church, spirituality, urban society andlearning in a specific context from the seventh to the sixteenth century, allowing for the consideration of St Andrews alongside other great religious and political centres of medieval Europe.
Michael Brown is Professor of Medieval Scottish History, University of St Andrews; Katie Stevenson is Keeper of Scottish History and Archaeology, National Museums Scotland and Senior Lecturer in Late Medieval History, University of St Andrews.
Contributors: Michael Brown, Ian Campbell, David Ditchburn, Elizabeth Ewan, Richard Fawcett, Derek Hall, Matthew Hammond, Julian Luxford, Roger Mason, Norman Reid, Bess Rhodes, Catherine Smith, Katie Stevenson, Simon Taylor, Tom Turpie.
THERE are two principal versions of the St Andrews foundation legend that try to account for the known presence of the body of St Andrew in Constantinople and the presence of corporeal relics in Fife. They are usually referred to simply as Foundation Account A (FAA) and Foundation Account B (FAB), dated c.1000 and mid twelfth century respectively. In FAA we find the audacious claim that:
the archiepiscopacy of all Scotia should be exercised from this city where the apostolic see is [and] no bishop ought to be ordained in Scotia without the approval of the elders of this place. For in relation to the first Rome this is the second. This is the preeminent city of refuge. This is the city of cities of Scotia.
This essay revises and extends three of my earlier attempts to explore whether this claim was expressed physically in the forms of the cathedral and of the burgh, both founded in the mid twelfth century. It has been argued that St Andrews – as cathedral and burgh – was planned as ‘a single grandiose conception’; but even if that were not the case, the arguments for each element can still stand alone. After examining the evidence for first the cathedral and then the burgh, this essay will then consider the parallels (or lack thereof) at Compostela, which made a contemporary and successful bid to gain the status of an apostolic see.
Some believe that the ruins of the church known as St Rule's since the sixteenth century represent a rebuilding of the original church housing the shrine of St Andrew, by Bishop Robert, around the time of his consecration in 1127. If this is so one wonders at its modest size compared with the claims made in FAA, and whether the scale of the present cathedral, formally founded by Bishop Arnold in 1162, more truly reflects the ambitions of Bishop Robert, who died in 1159. It was the largest church in Scotland, with a nave originally fourteen bays long, making the length of the whole cathedral about 121.22m (see figure 3.1). However, after the collapse of the west front around 1272, the nave was reduced to twelve bays, making the present overall length 113.08m. Even in its sad post-Reformation state, it still impressed John Slezer (d. 1717).