1,654 research outputs found

    Marshall Space Flight Center Research and Technology Report 2019

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    Today, our calling to explore is greater than ever before, and here at Marshall Space Flight Centerwe make human deep space exploration possible. A key goal for Artemis is demonstrating and perfecting capabilities on the Moon for technologies needed for humans to get to Mars. This years report features 10 of the Agencys 16 Technology Areas, and I am proud of Marshalls role in creating solutions for so many of these daunting technical challenges. Many of these projects will lead to sustainable in-space architecture for human space exploration that will allow us to travel to the Moon, on to Mars, and beyond. Others are developing new scientific instruments capable of providing an unprecedented glimpse into our universe. NASA has led the charge in space exploration for more than six decades, and through the Artemis program we will help build on our work in low Earth orbit and pave the way to the Moon and Mars. At Marshall, we leverage the skills and interest of the international community to conduct scientific research, develop and demonstrate technology, and train international crews to operate further from Earth for longer periods of time than ever before first at the lunar surface, then on to our next giant leap, human exploration of Mars. While each project in this report seeks to advance new technology and challenge conventions, it is important to recognize the diversity of activities and people supporting our mission. This report not only showcases the Centers capabilities and our partnerships, it also highlights the progress our people have achieved in the past year. These scientists, researchers and innovators are why Marshall and NASA will continue to be a leader in innovation, exploration, and discovery for years to come

    Legislative Watch

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    Longitudinal falls data in Parkinson’s disease: feasibility of fall diaries and effect of attrition

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    Background: Identifying causes of falls for people with Parkinson’s disease has met with limited success. Prospective falls measurement using the “gold standard” approach is challenging. This paper examines the process and outcomes associated with longitudinal falls reporting in this population. Methods: Participants were recruited from ICICLE-GAIT (a collaborative study with ICICLE-PD; an incident cohort study). Monthly falls diaries were examined over 48 months for accuracy of data and rate of attrition. To further inform analysis, characteristics of participants with 36-month completed diaries were compared with those who did not complete diaries. Results: One hundred and twenty-one participants were included at baseline. By 12 months, falls diary data had reduced to 107 participants; to 81 participants by 36 months; and to 59 participants by 48 months. Key reasons for diary attrition were withdrawal from ICICLE-gait (n = 16) (13.2%), and noncompliance (n = 11) (9.1%). The only significant difference between the completed and non-completed diary groups was age at 36 months, with older participants being more likely to send in diaries. Conclusions: Prospective falls data is feasible to collect over the long term. Attrition rates are high; however, participants retained in the study are overall representative of the total falls diary cohort

    Development of a Collaborative Goal Setting Measure for Patients with Diabetes

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    Introduction: The potential benefits of collaborative goal setting in the clinical setting have been shown. However, we have a limited understanding about what needs to have transpired between a patient and his or her clinician for them to report that they engaged in collaborative goal setting. Therefore, our ability to monitor and foster collaborative goal setting remains limited. Methods: My three-manuscript dissertation used a mixed-methods approach utilizing both qualitative and quantitative research methods. The aims of my study were to: (1) develop a conceptual model of collaborative goal setting as perceived by patients; (2) generate a list of survey items for possible inclusion in a measure of collaborative goal setting, using results from patient focus groups and input from an expert panel; and (3) administer the collaborative goal setting measure to a sociodemographically diverse sample of patients with diabetes and test the psychometric properties of the measure. Results: Study 1 found that patients described collaborative goal setting as containing four distinct domains that occurred within the context of a caring relationship with their health care provider: (1) listen and learn from each other; (2) share ideas honestly; (3) agree on a measurable objective; and (4) support for goal achievement. Patients also articulated clear responsibilities for themselves and their clinicians within each domain and described collaborative goal setting as a process that occurs over time. Study 2 found that the second-order factor analysis supported the proposed measurement structure of a 37-item measure of patient-perceived collaborative goal setting. Overall model fit of the first-order model was good (χ = 4366.13, p\u3c.001; RMSEA = .08). The internal consistency of the second-order model scales [caring relationship, listen and learn, share ideas, agree on a measurable objective, and support for goal achievement] were very high (α = .89-.94) as was the reliability (Mcdonald’s Ώ = .819). Study 3 found that the only significant pathway was the relationship between collaborative goal setting and self-management, which was partially mediated by self-efficacy (p\u3c.05). After controlling for a variety of socio-demographic characteristics, the partial mediation model with self-efficacy was no longer significant (p=.055), however, the direct effects remained significant: self-management and collaborative goal setting (p\u3c.001) and self-efficacy (p\u3c.001), as well as self-efficacy on collaborative goal setting (p\u3c.05). Discussion: Findings from these three studies support the new measure of collaborative goal setting developed from patient perceptions of this process

    Legislative Watch

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    Legislative Watch

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    Concussion injury management, perception, and knowledge in amateur field hockey

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    Background: Field hockey has a high risk for sports-related concussion (SRC) injuries due to the speed and intensity of the game, current rules, field surfaces and equipment composition. Head injuries are the second most common reported injury and up to 75% of SRCs go unreported or undetected. This increases the subsequent injury risk, long term health consequences and prolonged injury recovery. Objectives: This study aimed to examine the prevalence of SRC in hockey players within the Southern Gauteng Hockey Association (SGHA) premier league. Concussion knowledge and attitudes of hockey players, coaches, umpires, and officials were also investigated. Methods: A partially mixed sequential dominant status design (QUANT–qual) was used, divided into two phases. In Phase One hockey players, coaches, umpires, and technical officials (n=119) completed a modified RoCKAS-ST questionnaire. In Phase Two, a focus group discussion with umpires (n=3) and interviews with coaches (n=3) were conducted. Results: Injuries to the shoulder, neck, head, and face were reported from stick use (n=98); ball use (n=102) and collisions (n=187). Only 19% of hockey players were diagnosed with SRC, indicating that many of these injuries were undetected or not reported. Responses from the focus group discussion and interviews indicated that coaches, umpires, and officials felt they had insufficient knowledge of SRC. Conclusion: The recognition and management of on-field injuries require improvement to enhance the injury detection system

    Marshall Space Flight Center Research and Technology Report 2017

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    This report features over 60 technology development and scientific research efforts that collectively aim to enable new capabilities in spaceflight, expand the reach of human exploration, and reveal new knowledge about the universe in which we live. These efforts include a wide array of strategic developments: launch propulsion technologies that facilitate more reliable, routine, and cost effective access to space; in-space propulsion developments that provide new solutions to space transportation requirements; autonomous systems designed to increase our utilization of robotics to accomplish critical missions; life support technologies that target our ability to implement closed-loop environmental resource utilization; science instruments that enable terrestrial, solar, planetary and deep space observations and discovery; and manufacturing technologies that will change the way we fabricate everything from rocket engines to in situ generated fuel and consumables
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