Correcting Velocity Dispersions of Dwarf Spheroidal Galaxies for Binary Orbital Motion

We show that the measured velocity dispersions of dwarf spheroidal galaxies from about 4 to 10 km s^(–1) are unlikely to be inflated by more than 30% due to the orbital motion of binary stars and demonstrate that the intrinsic velocity dispersions can be determined to within a few percent accuracy using two-epoch observations with 1-2 yr as the optimal time interval. The crucial observable is the threshold fraction—the fraction of stars that show velocity changes larger than a given threshold between measurements. The threshold fraction is tightly correlated with the dispersion introduced by binaries, independent of the underlying binary fraction and distribution of orbital parameters. We outline a simple procedure to correct the velocity dispersion to within a few percent accuracy by using the threshold fraction and provide fitting functions for this method. We also develop a methodology for constraining properties of binary populations from both single- and two-epoch velocity measurements by including the binary velocity distribution in a Bayesian analysis

Impact of an 11-week Nordic Pole Walking Program on the Overall Feelings of Health, Wellbeing and Motivation in Older Adults

Nordic Pole Walking (NPW), the act of walking with poles, is an activity that promotes health and wellness for individuals of all ages and fitness levels. For older adults, this activity can be part of a healthy lifestyle while assisting with balance and encouraging correct gait for those who require additional support. The Sheridan Centre for Elder Research, in partnership with Nordixx Canada, offered an 11-week Nordic Pole Walking program (20 hours) to evaluate its impact on the overall feelings of health, well-being and motivation in older adults. A total of sixteen people participated (14 female, 2 male), and each participant completed a comprehensive battery of surveys and standardized evaluations of health, physical activity levels and motivation. Results showed that participants enjoyed the ‘walk and talk’ component and reported improved fitness levels and eagerness to continue Nordic Pole Walking after the project ended

Academic Scholars, Practicing Professionals, and Engaged Scholarship: A Content Analysis of Collaborative and Informed Research in Tourism Journals

This study examines the existence of engaged scholarship through a content analysis of 442 articles published in tourism journals. The importance of the analysis is based on arguments from the literature that research quality improves when academic scholars and practicing professionals collaborate. However, confirmation that engaged scholarship is taking place is a necessary first step before one can evaluate and compare the quality of the research. The results of the analysis reveal that engaged scholarship is modestly practiced. Collaborative research represents approximately 10 percent of the total while informed research represents about 22 percent (for external funding) and 9 percent (for access to data and other support). Now that the presence of engaged scholarship has been confirmed, future investigations should examine whether or not such engagement results in higher quality research. If so, it will have potentially important implications for both scholarship and practice

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Advanced Space Suit PLSS 2.0 Cooling Loop Evaluation and PLSS 2.5 Recommendations

From 2012 to 2015 The NASA/JSC AdvSS (Advanced Space Suit) PLSS (Portable Life Support Subsystem) team, with support from UTC Aerospace Systems, performed the build-up, packaging and testing of PLSS 2.0. One aspect of that testing was the evaluation of the long-term health of the water cooling circuit and the interfacing components. Periodic and end-of-test water, residue and hardware analyses provided valuable information on the status of the water cooling circuit, and the approaches that would be necessary to enhance water cooling circuit health in the future. The evaluated data has been consolidated, interpreted and woven into an action plan for the maintenance of water cooling circuit health for the planned FY (fiscal year) 2016 through FY 2018 PLSS 2.5 testing. This paper provides an overview of the PLSS 2.0 water cooling circuit findings and the associated steps to be taken in that regard for the PLSS 2.5

Advanced Space Suit PLSS 2.0 Cooling Loop Evaluation and PLSS 2.5 Recommendations

From 2012 to 2015 The NASA/JSC AdvSS (Advanced Space Suit) PLSS (Primary Life Support Subsystem) team, with support from UTC Aerospace Systems, performed the build-up, packaging and testing of PLSS 2.0. A key aspect of that testing was the evaluation of the long-term health of the water cooling circuit and the interfacing components. Intermittent and end-of-test water, residue and hardware analyses provided valuable information on the status of the water cooling circuit, and the approaches that would be necessary to enhance water cooling circuit health in the future. The evaluated data has been consolidated, interpreted and woven into an action plan for the maintenance of water cooling circuit health for the planned FY (fiscal year) 2016 through FY 2018 PLSS 2.5 testing. This paper provides an overview of the PLSS 2.0 water cooling circuit findings and the associated steps to be taken in that regard for the PLSS 2.5 testing

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