10,569 research outputs found

    ‘The finest set of cup and ring marks in existence’: the story of the Cochno Stone, West Dunbartonshire

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    The Cochno Stone is one of the most extensive and highly decorated prehistoric rock-art outcrops in Britain. It is located on the northern urban fringe of West Dunbartonshire beside Faifley, Clydebank, in a park in the foothills of the Kilpatrick Hills. First re-discovered by antiquarians toward the end of the nineteenth century, this outcrop subsequently became the focus of the attentions of Ludovic McLellan Mann in the 1930s, who decorated the stone with an elaborate painted colour-scheme. Expanding urbanisation, visitor numbers and graffiti prompted the authorities to bury the stone beneath soil for its own protection in 1965. During two seasons of fieldwork in 2015 and 2016, the Cochno Stone was exposed for short periods of time to allow for an assessment to be made of the condition of the stone surface, and digital and photogrammetric recording to take place. Provisional results of the fieldwork are reported on here, but the main focus of this paper is to present as fully as possible for the first time the biography of the Cochno Stone from antiquarian discovery to the present day. The paper concludes with thoughts about the future of this monument

    Cremation practices and the creation of monument complexes: the Neolithic cremation cemetery at Forteviot, Strathearn, Perth & Kinross, Scotland, and its comparanda

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    Around the beginning of the 3rd millennium cal bc a cremation cemetery was established at Forteviot, central Scotland. This place went on to become one of the largest monument complexes identified in Mainland Scotland, with the construction of a palisaded enclosure, timber structures, and a series of henge monuments and other enclosures. The cemetery was established between 3080 and 2900 cal bc, probably in the 30th century cal bc, which is contemporary with the cremation cemetery at Stonehenge. Nine discrete deposits of cremated bone, representing the remains of at least 18 people, were identified. In most instances they were placed within cut features and, in one case, a series of cremation deposits was associated with a broken standing stone. This paper includes the first detailed assessment of the cremated remains at Forteviot and the features associated with the cemetery, and explores how the establishment of this cemetery may have been both a catalyst and inspiration for the elaborate monument building and prolonged acts of remembrance that occurred at this location over a period of almost 1000 years. The paper also outlines the parallels for Forteviot across Britain and, for the first time, draws together the dating evidence (including Bayesian modelling) for this major category of evidence for considering the nature of late 4th/early 3rd millennium cal bc society. The results and discussion have wide implications and resonances for contemplating the establishment and evolution of monument complexes in prehistoric Britain and beyond

    Visual Attention to Radar Displays

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    A model is described which predicts the allocation of attention to the features of a radar display. It uses the growth of uncertainty and the probability of near collision to call the eye to a feature of the display. The main source of uncertainty is forgetting following a fixation, which is modelled as a two dimensional diffusion process. The model was used to predict information overload in intercept controllers, and preliminary validation obtained by recording eye movements of intercept controllers in simulated and live (practice) interception

    Build n burn: using fire as a tool to evoke, educate and entertain

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    The visceral nature of fire was exploited in the Neolithic and Bronze Age periods in Britain by the burning down of timber buildings and monuments, as well as the cremation of the dead. These big fires would have created memories, perhaps even ‘flashbulb memories’, and this powerful mnemonic aspect of fire was likely of significance to the social and religious lives of individuals, families and communities. This article introduces the Build N Burn concept, where fires are recreated and deployed alongside public talks, performances, experimental archaeology activities and demonstrations by craft specialists to create memorable and informative public events. Three public engagements to date, two on the island of Arran and one in Caithness, both Scotland, are described here. In each case, we constructed replica timber structures inspired by local prehistoric sites, and then burned these down in a free-to-attend public event at dusk, evoking the culmination of a prehistoric festival. Build N Burn has, at its core, the principle of delivering memorable experiences for the public inspired by prehistory, underpinned by research and experiment, using events which draw on cross-sectoral collaboration and working with local communities. This article offers a critical reflection on work to date, and discusses future potential for such activities, utilizing the mnemonic power and transformational potential of fire for public engagement and experimental archaeology

    Distribution, Hybridization, and Taxonomic Status of Two-lined Salamanders (\u3ci\u3eEurycea bislineata\u3c/i\u3e complex) in Virginia and West Virginia

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    We used three diagnostic protein markers to examine salamanders of the Eurycea bislineata complex at 80 localities in Virginia and West Virginia. Two groups were strongly differentiated and met at a narrow contact zone. Rare hybridization was observed as well as limited introgression up to 5 km north and 10 km south of the contact zone. At the contact zone, 1% F1, 2% F2, 32% backcross, and 66% parental genotypes were observed. This pattern of parapatric distribution with limited hybridization and introgression argues for the recognition of Eurycea bislineata and E. cirrigera as separate species

    CONSERVED FUNCTIONAL DOMAINS OF THE RNA-POLYMERASE-III GENERAL TRANSCRIPTION FACTOR BRF

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    In Saccharomyces cerevisiae, two components of the RNA polymerase III (Pol III) general transcription factor TFIIIB are the TATA-binding protein (TBP) and the B-related factor (BRF), so called because its amino-terminal half is homologous to the Pol II transcription factor IIB (TFIIB). We have cloned BRF genes from the yeasts Kluyveromyces lactis and Candida albicans, Despite the large evolutionary distance between these species and S. cerevisiae, the BRF proteins are conserved highly. Although the homology is most pronounced in the amino-terminal half, conserved regions also exist in the carboxy-terminal half that is unique to BRF. By assaying for interactions between BRF and other Pol III transcription factors, we show that it is able to bind to the 135-kD subunit of TFIIIC and also to TBP. Surprisingly, in addition to binding the TFIIB-homologous amino-terminal portion of BRF, TBP also interacts strongly with the carboxy-terminal half. Deleting two conserved regions in the BRF carboxy-terminal region abrogates this interaction. furthermore, TBP mutations that selectively inhibit Pol III transcription in vivo impair interactions between TBP and the BRF carboxy-terminal domain. Finally, we demonstrate that BRF but not TFIIB binds the Pol III subunit C34 and we define a region of C34 necessary for this interaction. These observations provide insights into the roles performed by BRF in Pol III transcription complex assembly

    Implementation of a production Ada project: The GRODY study

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    The use of the Ada language and design methodologies that encourage full use of its capabilities have a strong impact on all phases of the software development project life cycle. At the National Aeronautics and Space Administration/Goddard Space Flight Center (NASA/GSFC), the Software Engineering Laboratory (SEL) conducted an experiment in parallel development of two flight dynamics systems in FORTRAN and Ada. The differences observed during the implementation, unit testing, and integration phases of the two projects are described and the lessons learned during the implementation phase of the Ada development are outlined. Included are recommendations for future Ada development projects
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