Marshall University Department of Music Presents a Senior Recital, Jonathon Shuff, Composition, Matt Bradley, Percussion

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The use, integration and value of performance analysis to GAA coaches

Performance analysis (PA) has become integral to the multi-million euro preparation of intercounty GAA teams (GAA, 2013). With little research on the coaching practice of GAA coaches, this paper explores their engagement with PA. Its aims were to examine the use, integration and value of PA to coaches. A sample of 12,500 (minimum level 1 Coaching Ireland qualified) coaches were selected to complete an online-survey with 538 respondents across 37 sports. As the highest responding cohort (n=144), data for the GAA coaches was isolated for further analysis. PA was used by 49% of GAA coaches. These coaches were more likely to have 10+ years coaching experience (Xi2 = 20.7 p = 0); be qualified beyond GAA Award 1 (Xi2 = 14.0 p = 0) and coach at intercounty level (Xi2 = 12.3 p = 0). Coaches using PA had access primarily to match statistics (81%); only 49% had access to match video. The most popular tools for data collection were hand notation (65%), Dartfish (38%) and Apps (38%). Coaches cited resources and knowledge as key barriers to progressing their use of PA. Reliability of information was not identified as an issue. 88% of coaches using PA felt it was important / essential to their practice. The findings indicate that GAA coaches have substantially more access to quantitative information compared to video feedback. This lack of video to contextualise and validate data has potential to hamper the interpretation of information by a coach thus impacting their subsequent interventions. In GAA coach education, more emphasis could be placed on the importance of contextualising statistics with video and the potential of video feedback to players. Coaches should be encouraged to question the reliability of match statistics and equipped with appropriate strategies to minimise errors in data collection

Ambient air pollution, geomasking, and hypertensive disorders of pregnancy in Montana

Being one of the leading causes of maternal and neonatal morbidity and mortality worldwide, hypertensive disorders of pregnancy (HDPs), including eclampsia, preeclampsia, and gestational hypertension, are a major public health burden. Research links fine particulate matter air pollution (PM2.5­) to increased risk of HDPs, but such studies are lacking in wildfire-prone rural areas. While PM2.5 concentrations have been decreasing around most of the US in the last few decades, Montana and other western states have experienced an increase in PM2.5 concentrations due to increasing wildfire activity. Moreover, a growing body of research into the health effects of air pollution has grown methodologic literature to improve how such research is conducted. As these research methods advance, preserving individual confidentiality is crucial. Geomasking is a class of methods that conceals individuals’ locations while attempting to preserve the location-health outcome relationship. However, in rural areas like much of Montana, adequately concealing an individual’s location may introduce substantial error into their air pollution exposure estimate. By extension, this could introduce bias into conclusions about the true association between air pollution and the health outcome of interest. The purpose of this study was twofold: (1) to determine the association between PM2.5 and HDPs and (2) to use simulation to explore conditions under which geomasking may introduce bias into the results of research on the health effects of air pollution. Using Montana birth certificate records from 2008-2019, we used multiple logistic regression and found a 10% increase in risk of HDP associated with each 3 µg/m3 increase in mean pregnancy PM2.5 exposure and used distributed lag nonlinear models to identify two sensitive time periods of exposure: (1) the week of conception and three weeks before and after conception; and (2) gestational weeks 19 through 33. The geomasking simulation is in progress and results will be presented

Parents\u27 perception of stroller use in young children: A qualitative study

Background: Despite their wide usage, it has recently been suggested that stroller use may reduce physical activity levels of young children. However, there have been no studies on stroller use as it relates to physical activity outcomes. The objectives of this study were to understand the context of stroller use for young children and parents\u27 perceptions of the relationship between stroller use and their children\u27s physical activity. Methods: Parents of children 1 to 5 years of age were recruited through two sites of TARGet Kids!, a primary-care, practice-based research network in Toronto, Canada. Fourteen semi-structured interviews were conducted. Interviews were audio recorded and transcribed verbatim and two independent reviewers conducted thematic analysis. A number of strategies were employed to ensure the trustworthiness of the data. Results: Parents discussed reasons for stroller use (i.e., transportation; storage; leisure; supervision/confinement; parent physical activity; and sleep), factors that influence the decision to use a stroller (i.e., caregiver choice; convenience, timing, distance; family lifestyle; and child preference), and perceived impact of stroller use on physical activity (i.e., most parents did not recognize a connection between stroller use and physical activity). Conclusion: This study provides a context for researchers and policy makers to consider when developing stroller related physical activity guidelines for young children

High value of ecological information for river connectivity restoration

Context: Efficient restoration of longitudinal river connectivity relies on barrier mitigation prioritization tools that incorporate stream network spatial structure to maximize ecological benefits given limited resources. Typically, ecological bene 5 fits of barrier mitigation are measured using proxies such as the amount of accessible riverine habitat. Objectives We developed an optimization approach for barrier mitigation planning which directly incorporates the ecology of managed taxa, and applied it to an urbanizing salmonbearing watershed in Alaska. Methods: A novel river connectivity metric that exploits information on the distribution and movement of managed taxon was embedded into a barrier prioritization framework to identify optimal mitigation actions given limited restoration budgets. The value of ecological information on managed taxa was estimated by comparing costs to achieve restoration targets across alternative barrier prioritization approaches. Results: Barrier mitigation solutions informed by life history information outperformed those using only river connectivity proxies, demonstrating high value of ecological information for watershed restoration. In our study area, information on salmon ecology was typically valued at 0.8-1.2M USD in costs savings to achieve a given benefit level relative to solutions derived only from stream network information, equating to 16-28% of the restoration budget. Conclusions Investing in ecological studies may achieve win-win outcomes of improved understanding of aquatic ecology and greater watershed restoration efficiency

NASA Probe Study Report: Farside Array for Radio Science Investigations of the Dark ages and Exoplanets (FARSIDE)

This is the final report submitted to NASA for a Probe-class concept study of the "Farside Array for Radio Science Investigations of the Dark ages and Exoplanets" (FARSIDE), a low radio frequency interferometric array on the farside of the Moon. The design study focused on the instrument, a deployment rover, the lander and base station, and delivered an architecture broadly consistent with the requirements for a Probe mission. This notional architecture consists of 128 dipole antennas deployed across a 10 km area by a rover, and tethered to a base station for central processing, power and data transmission to the Lunar Gateway, or an alternative relay satellite. FARSIDE would provide the capability to image the entire sky each minute in 1400 channels spanning frequencies from 150 kHz to 40 MHz, extending down two orders of magnitude below bands accessible to ground-based radio astronomy. The lunar farside can simultaneously provide isolation from terrestrial radio frequency interference, auroral kilometric radiation, and plasma noise from the solar wind. This would enable near-continuous monitoring of the nearest stellar systems in the search for the radio signatures of coronal mass ejections and energetic particle events, and would also detect the magnetospheres for the nearest candidate habitable exoplanets. Simultaneously, FARSIDE would be used to characterize similar activity in our own solar system, from the Sun to the outer planets. Through precision calibration via an orbiting beacon, and exquisite foreground characterization, FARSIDE would also measure the Dark Ages global 21-cm signal at redshifts from 50-100. It will also be a pathfinder for a larger 21-cm power spectrum instrument by carefully measuring the foreground with high dynamic range

Real-Time Detection and Filtering of Radio Frequency Interference On-board a Spaceborne Microwave Radiometer: The CubeRRT Mission

The Cubesat Radiometer Radio frequency interference Technology validation mission (CubeRRT) was developed to demonstrate real-time on-board detection and filtering of radio frequency interference (RFI) for wide bandwidth microwave radiometers. CubeRRT’s key technology is its radiometer digital backend (RDB) that is capable of measuring an instantaneous bandwidth of 1 GHz and of filtering the input signal into an estimated total power with and without RFI contributions. CubeRRT’s on-board RFI processing capability dramatically reduces the volume of data that must be downlinked to the ground and eliminates the need for ground-based RFI processing. RFI detection is performed by resolving the input bandwidth into 128 frequency sub-channels, with the kurtosis of each sub-channel and the variations in power across frequency used to detect non-thermal contributions. RFI filtering is performed by removing corrupted frequency sub-channels prior to the computation of the total channel power. The 1 GHz bandwidth input signals processed by the RDB are obtained from the payload’s antenna (ANT) and radiometer front end (RFE) subsystems that are capable of tuning across RF center frequencies from 6 to 40 GHz. The CubeRRT payload was installed into a 6U spacecraft bus provided by Blue Canyon Technologies that provides spacecraft power, communications, data management, and navigation functions. The design, development, integration and test, and on-orbit operations of CubeRRT are described in this paper. The spacecraft was delivered on March 22nd, 2018 for launch to the International Space Station (ISS) on May 21st, 2018. Since its deployment from the ISS on July 13th, 2018, the CubeRRT RDB has completed more than 5000 hours of operation successfully, validating its robustness as an RFI processor. Although CubeRRT’s RFE subsystem ceased operating on September 8th, 2018, causing the RDB input thereafter to consist only of internally generated noise, CubeRRT’s key RDB technology continues to operate without issue and has demonstrated its capabilities as a valuable subsystem for future radiometry missions