1,357 research outputs found

    The Head of the Holler: Guided Place-Based Digital Education in Rural Appalachia

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    A capstone submitted in partial fulfillment of the Requirements for the degree of Doctor of Education in the College of Education at Morehead State University by Bruce Parsons on February 22, 2016

    Characteristics of Dewey and Fullerton soils

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    The Dewey and Fullerton soils are two Important and extensive Red-yellow podzolic soil series in the Valley of East Tennessee. These soils are well-drained and were developed under mixed deciduous and coniferous forest vegetation. The Dewey soils have developed on residual parent materials from dolomite, dolomitic limestone, and limestone, while the Fullerton soils have developed on residual parent materials from siliceous dolomite and dolomitic limestone. Over a twenty-five year period, the area has had a mean annual rainfall of fifty inches. The mean January temperature is 40°F, while the mean July temperature is 80°F (3).¹ Devey soils are morphologically similar to the Fullerton soils, but have browner A horizons, redder B horizons, contain less chert gravel, and lack the pale colored A2 horizon of the Fullerton series. The purpose of this study was to characterize the Dewey and Fullerton soil series and to establish whether or not differences between the series do exist, other than those which may be detected by visual observation

    Soils of Indian mounds in northeast Iowa as soil genesis benchmarks

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    The effects of both state and trait anxiety and certain personality variables on performance in a complex motor task

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    The relationship of anxiety in both its state and trait manifestation to simple motor performance has been established in a number of studies. The present study is an attempt to extend these relationships to more complex motor performances, that is, to the level of a unitary group of motor habits such as is present in an athletic task. In doing this the present study utilizes not only direct assessments of both state and trait anxiety, but also assessment of certain personality traits which may be important in mediating the expression of anxiety and activation level

    Measurement properties of the Disability Rating Index in patients undergoing hip replacement

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    Objective. The aim of this study was to establish and validate the measurement properties of the Disability Rating Index (DRI) in a population of adults undergoing hip replacement. Methods. One hundred and twenty-six adults participating in a randomized controlled trial completed the Oxford Hip Score, Harris Hip Score, DRI and EuroQol Group–Five Dimensions (EQ-5D) questionnaires at four time points. The structural validity of the DRI was assessed using principal component analysis. Cronbach’s α was used to determine the internal consistency and scale reliability was also assessed. Correlation between the DRI and the other functional and health-related quality of life scales was used to check criterion validity. DRI responsiveness was estimated and the interpretability of the scale was also assessed by checking for edge effects. Results. Results of analyses showed that the DRI was internally consistent (Cronbach’s α = 0.92), had good association with both function-specific and general health-related quality of life scores and was sensitive to change (smallest detectable change = 2.7). No evidence of edge effects was found. Furthermore, structural assessment of the DRI revealed two novel subscales representing simple tasks and difficult tasks. Conclusions. The DRI is structurally valid, responsive and concurs with functional assessment in adults undergoing hip replacement

    Three-dimensional flow structure and bed morphology in large elongate meander loops with different outer bank roughness characteristics

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    © 2016. American Geophysical Union. All Rights Reserved. Few studies have examined the three-dimensional flow structure and bed morphology within elongate loops of large meandering channels. The present study focuses on the spatial patterns of three-dimensional flow structure and bed morphology within two elongate meander loops and examines how differences in outer bank roughness influence near-bank flow characteristics. Three-dimensional velocities were measured during two different events—a near-bankfull flow and an overbank event. Detailed data on channel bathymetry and bed form geometry were obtained during a near-bankfull event. Flow structure within the loops is characterized by strong topographic steering by the point bar, by the development of helical motion associated with flow curvature, and by acceleration of flow where bedrock is exposed along the outer bank. Near-bank velocities during the overbank event are less than those for the near-bankfull flow, highlighting the strong influence of the point bar on redistribution of mass and momentum of the flow at subbankfull stages. Multiple outer bank pools are evident within the elongate meander loop with low outer bank roughness, but are not present in the loop with high outer bank roughness, which may reflect the influence of abundant large woody debris on near-bank velocity characteristics. The positions of pools within both loops can be linked to spatial variations in planform curvature. The findings indicate that flow structure and bed morphology in these large elongate loops is similar to that in small elongate loops, but differs somewhat from flow structure and bed morphology reported for experimental elongate loops

    Rewinding the waves: tracking underwater signals to their source

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    Analysis of data, recorded on March 8th 2014 at the Comprehensive Nuclear-Test-Ban Treaty Organisation’s hydroacoustic stations off Cape Leeuwin Western Australia, and at Diego Garcia, reveal unique pressure signatures that could be associated with objects impacting at the sea surface, such as falling meteorites, or the missing Malaysian Aeroplane MH370. To examine the recorded signatures, we carried out experiments with spheres impacting at the surface of a water tank, where we observed almost identical pressure signature structures. While the pressure structure is unique to impacting objects, the evolution of the radiated acoustic waves carries information on the source. Employing acoustic–gravity wave theory we present an analytical inverse method to retrieve the impact time and location. The solution was validated using field observations of recent earthquakes, where we were able to calculate the eruption time and location to a satisfactory degree of accuracy. Moreover, numerical validations confirm an error below 0.02% for events at relatively large distances of over 1000 km. The method can be developed to calculate other essential properties such as impact duration and geometry. Besides impacting objects and earthquakes, the method could help in identifying the location of underwater explosions and landslides

    Secular values and the location of religion: a spatial analysis of an English medical centre

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    What do contemporary controversies in healthcare reveal about secular values and the location of religion within an English medical centre? Using a socio-spatial methodology designed to break open ideological perspectives and normative values, we analyse the doctor-patient relationship, complementary and alternative medicine, and an issue that bridges the two, evidence-based medicine. In the physical, social and mental spaces of the medical centre we uncover the traces of religious activity and roles and of alternative therapeutic regimes often informed by spiritual or religious systems. Furthermore we disclose the heterogeneity of values that comprise the secular worldview of one group of contemporary general practitioners

    Effect of Particle Damping on an Acoustically Excited Curved Vehicle Panel Structure with varied Equipment Assemblies

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    Particle dampers provide a mechanism for diverting energy away from resonant structural vibrations. This experimental study provides data from trials to determine how effective use of these dampers might be for equipment mounted to a curved orthogrid vehicle panel. Trends for damping are examined for variations in damper fill level, component mass, and excitation energy. A significant response reduction at the component level would suggest that comparatively small, thoughtfully placed, particle dampers might be advantageously used in vehicle design. The results of this test will be compared with baseline acoustic response tests and other follow-on testing involving a range of isolation and damping methods. Instrumentation consisting of accelerometers, microphones, and still photography data will be collected to correlate with the analytical results
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