879 research outputs found

    Where Do You Work-a, John? (Push-a Push-a Push)

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    With Ukulele arrangement. Contains advertisements and/or short musical examples of pieces being sold by publisher.https://digitalcommons.library.umaine.edu/mmb-vp/7137/thumbnail.jp

    Where Do You Work-a, John?\u27

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    Photograph of a man; Illustration of two men working on a railroadhttps://scholarsjunction.msstate.edu/cht-sheet-music/10963/thumbnail.jp

    Molecular dynamics simulations of lead clusters

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    Molecular dynamics simulations of nanometer-sized lead clusters have been performed using the Lim, Ong and Ercolessi glue potential (Surf. Sci. {\bf 269/270}, 1109 (1992)). The binding energies of clusters forming crystalline (fcc), decahedron and icosahedron structures are compared, showing that fcc cuboctahedra are the most energetically favoured of these polyhedral model structures. However, simulations of the freezing of liquid droplets produced a characteristic form of ``shaved'' icosahedron, in which atoms are absent at the edges and apexes of the polyhedron. This arrangement is energetically favoured for 600-4000 atom clusters. Larger clusters favour crystalline structures. Indeed, simulated freezing of a 6525-atom liquid droplet produced an imperfect fcc Wulff particle, containing a number of parallel stacking faults. The effects of temperature on the preferred structure of crystalline clusters below the melting point have been considered. The implications of these results for the interpretation of experimental data is discussed.Comment: 11 pages, 18 figues, new section added and one figure added, other minor changes for publicatio

    Dynamic landscapes and human dispersal patterns : tectonics, coastlines, and the reconstruction of human habitats

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    Studies of the impact of physical environment on human evolution usually focus on climate as the main external forcing agent of evolutionary and cultural change. In this paper we focus on changes in the physical character of the landscape driven by geophysical processes as an equally potent factor. Most of the landscapes where finds of early human fossils and artefacts are concentrated are ones that have been subjected to high levels of geological instability, either because of especially active tectonic processes associated with faulting and volcanic activity or because of proximity to coastlines subject to dramatic changes of geographical position and physical character by changes of relative sea level. These processes can have both beneficial effects, creating ecologically attractive conditions for human settlement, and deleterious or disruptive ones, creating barriers to movement, disruption of ecological conditions, or hazards to survival. Both positive and negative factors can have powerful selective effects on human behaviour and patterns of settlement and dispersal. We consider both these aspects of the interaction, develop a framework for the reconstruction and comparison of landscapes and landscape change at a variety of scales, and illustrate this with selected examples drawn from Africa and Arabia

    Deep Underground Science and Engineering Laboratory - Preliminary Design Report

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    The DUSEL Project has produced the Preliminary Design of the Deep Underground Science and Engineering Laboratory (DUSEL) at the rehabilitated former Homestake mine in South Dakota. The Facility design calls for, on the surface, two new buildings - one a visitor and education center, the other an experiment assembly hall - and multiple repurposed existing buildings. To support underground research activities, the design includes two laboratory modules and additional spaces at a level 4,850 feet underground for physics, biology, engineering, and Earth science experiments. On the same level, the design includes a Department of Energy-shepherded Large Cavity supporting the Long Baseline Neutrino Experiment. At the 7,400-feet level, the design incorporates one laboratory module and additional spaces for physics and Earth science efforts. With input from some 25 science and engineering collaborations, the Project has designed critical experimental space and infrastructure needs, including space for a suite of multidisciplinary experiments in a laboratory whose projected life span is at least 30 years. From these experiments, a critical suite of experiments is outlined, whose construction will be funded along with the facility. The Facility design permits expansion and evolution, as may be driven by future science requirements, and enables participation by other agencies. The design leverages South Dakota's substantial investment in facility infrastructure, risk retirement, and operation of its Sanford Laboratory at Homestake. The Project is planning education and outreach programs, and has initiated efforts to establish regional partnerships with underserved populations - regional American Indian and rural populations

    The Victorian Newsletter (Fall 1990)

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    The Victorian Newsletter is sponsored for the Victorian Group of Modern Language Association by the Western Kentucky University and is published twice annually.Antinomianism or Anarchy: A Note of Oscar Wilde's "Pen, Pencil and Poison" / William E. Buckler -- Sara Coleridge: The Gigadibs Complex / Nathan Cervo -- "On Tuesday Last, at St George's...": The Dandaical Wedding in Dickens / Patricia Marks -- Ruskin to the "Elusive" Mr. Horn: An Unpublished Letter from a Neglected Friendship / Warren Dwyer -- "Three Cups in One": A Reading of "The Woodspurge" / Andrew Leng -- Faith of Our Mothers: Elizabeth Gaskell's "Lizzie Leigh" / Joanne Thompson -- The Problem of the Man-Trap in Hardy's The Woodlanders / Jonathan C. Glance -- Sartor Redivivus, or Retailoring Carlyle for the Undergraduate Classroom / Linda K. Hughes -- Identification of Literary, Historical and other References in Trollope's The Mac dermots of Ballycloran (1847), The Three Clerks (1858), Rachel Ray (1863), The Vicar of Bullhampton (1870), Ralph the Heir (1871), and The American Senator (1877) / James Means -- Books Receive

    The burden of typhoid fever in low- and middle-income countries: A meta-regression approach.

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    BACKGROUND: Upcoming vaccination efforts against typhoid fever require an assessment of the baseline burden of disease in countries at risk. There are no typhoid incidence data from most low- and middle-income countries (LMICs), so model-based estimates offer insights for decision-makers in the absence of readily available data. METHODS: We developed a mixed-effects model fit to data from 32 population-based studies of typhoid incidence in 22 locations in 14 countries. We tested the contribution of economic and environmental indices for predicting typhoid incidence using a stochastic search variable selection algorithm. We performed out-of-sample validation to assess the predictive performance of the model. RESULTS: We estimated that 17.8 million cases of typhoid fever occur each year in LMICs (95% credible interval: 6.9-48.4 million). Central Africa was predicted to experience the highest incidence of typhoid, followed by select countries in Central, South, and Southeast Asia. Incidence typically peaked in the 2-4 year old age group. Models incorporating widely available economic and environmental indicators were found to describe incidence better than null models. CONCLUSIONS: Recent estimates of typhoid burden may under-estimate the number of cases and magnitude of uncertainty in typhoid incidence. Our analysis permits prediction of overall as well as age-specific incidence of typhoid fever in LMICs, and incorporates uncertainty around the model structure and estimates of the predictors. Future studies are needed to further validate and refine model predictions and better understand year-to-year variation in cases

    Effects of Processing on the Acceptability of 'frozen' extraposed constituents.

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    In syntactic theory, `freezing' refers to the idea that a constituent extraposed to a non-canonical position is resistant to extraction of any of its subconstituents (What did Terry see a movie yesterday about ?). The unacceptability of such examples, compared to minimally different sentences without extraposition, has been claimed to be a result of a grammatical constraint on dependency formation, e.g. Ross' (1967) Frozen Structure Constraint. Here, we argue that the gradient pattern of acceptability associated with such examples is better explained in terms of processing complexity. Experimental evidence from a controlled acceptability task shows that the total penalty for extraction from extraposed constituents is predictable from the summed acceptability penalties independently linked to extraction and extraposition. As prior research links both of these displacement phenomena to increased processing costs, we conclude that a grammar of unbounded dependencies in English does not require a `freezing' constraint for the explanation of these cases
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