1,099 research outputs found

    Matthew VanDemark, Violin: Student Recital

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    DIFFERENCES IN POSTURAL CONTROL RESPONSES TO LEVELS OF VISUAL OCCLUSION IN INDIVIDUALS WITH CHRONIC ANKLE INSTABILITY

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    Chronic ankle instability (CAI) is a condition characterized by recurrent ankle sprains. Those with CAI are described as visually reliant due to postural control deficits observed under fully occluded visual conditions. Little is known about the influence of partially occluded vision on postural control in those with CAI. The purpose of this study was to examine the effect of CAI on postural control under progressive levels of visual occlusion and relate postural control under these conditions to visual function and sensory integration in those with CAI. Thirty-five participants with CAI and sixteen controls completed postural control assessments under four visual conditions:1) eyes-open, 2) low-occlusion, 3) high-occlusion, and 4) eyes-closed. Participants also completed visual performance (Senaptec Sensory Station) and sensory integration (Sensory Organization Test) assessments. Both groups demonstrated worse postural control under limited-vision conditions compared to eyes-open. Some measures of visual performance predicted postural control under both eyes-open and limited-vision conditions.Master of Art

    HM 31: New Interpretations in Naval History

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    Selected papers from the twentieth McMullen Naval History Symposium held at the U.S. Naval Academy, 14–15 September 2017.https://digital-commons.usnwc.edu/usnwc-historical-monographs/1030/thumbnail.jp

    Admissibility of Prior Conviction, Arrests, and Confession to Impeach Credibility of a Witness

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    Dorothea Lange: Capturing the Reality of the Great Depression and the New Deal Era

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    Dorothea Lange created some of America’s most enduring and influential images as she documented the reality of the Great Depression in the 1930s and early 40s for the Farm Security Administration. Featured in government publications, printed on postage stamps, and used by social activists, Lange’s photographs helped define the era and the emerging field of photojournalism. This paper examines Lange’s motives and process as she tried to capture her subjects’ most intimate moments without exploiting their lives. It draws on Lange’s field notebooks and interviews and surveys the existing body of scholarship to assess how Lange’s life impacted her work and how her work impacted both documentary photography and America’s historical memory

    September 2014: Local Coffee Houses in Chicago

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    Cynthia VanDeMark’s map, created in GEO 441 (GIS for Community Development), uses data collected from Yelp.com to show locations of 115 “local” coffee locations and 123 Dunkin’ Donut locations. Local coffee houses are defined as those that are unique to their area and not corporate chains such as Starbucks or Dunkin’ Donuts. The kernel density map on the left shows that local coffee houses are spatially concentrated in the north, near west, and downtown areas of Chicago. The second map shows proposed sites for new local coffee house locations defined as tracts that have high population density (10k per square mile) in proximity (a mile) to a CTA rail train but don’t have existing local coffee houses. A recent report from the US Bureau of Labor (2014) predicts that service and management, arts, science, and business jobs are going to increase in the next 10 years while production jobs are going to decrease. Communities might consider how local coffee houses help create community, as local coffee houses may serve as a “third place” (first is home and second is work) more often than fast food locations such as Dunkin’ Donuts, that could facilitate advancements in social networking and career changes residents are aiming to achieve.https://via.library.depaul.edu/mom/1015/thumbnail.jp

    Impact of high frequency waves on the ocean altimeter range bias

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    New aircraft observations are presented on the range determination error in satellite altimetry associated with ocean waves. Laser-based measurements of the cross correlation between the gravity wave slope and elevation are reported for the first time. These observations provide direct access to a long, O(10 m), gravity wave statistic central to nonlinear wave theory prediction of the altimeter sea state bias. Coincident Ka-band radar scattering data are used to estimate an electromagnetic (EM) range bias analogous to that in satellite altimetry. These data, along with ancillary wind and wave slope variance estimates, are used alongside existing theory to evaluate the extent of long- versus short-wave, O(cm), control of the bias. The longer wave bias contribution to the total EM bias is shown to range from 25 to as much as 100%. Moreover, on average the term is linearly related to wind speed and to the gravity wave slope variance, consistent with WNL theory. The EM bias associated with interactions between long and short waves is obtained assuming the effect is additive to the independently observed long-wave factor. This second component is also a substantial contributor, is observed to be quadratic in wind speed or wave slope, and dominates at moderate wind speeds. The behavior is shown to be consistent with EM bias prediction based in hydrodynamic modulation theory. Study implications for improved correction of the on-orbit satellite sea state bias are discussed
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