Operational flow visualization techniques in the Langley Unitary Plan Wind Tunnel

The unitary plan wind tunnel (UPWT) uses in daily operation are shown. New ideas for improving the quality of established flow visualization methods are developed and programs on promising new flow visualization techniques are pursued. The unitary plan wind tunnel is a supersonic facility, referred to as a production facility, although the majority of tests are inhouse basic research investigations. The facility has two 4 ft. by 4 ft. test sections which span a Mach range from 1.5 to 4.6. The cost of operation is about $10 per minute. Problems are the time required for a flow visualization test setup and investigation costs and the ability to obtain consistently repeatable results. Examples of sublimation, vapor screen, oil flow, minitufts, schlieren, and shadowgraphs taken in UPWT are presented. All tests in UPWT employ one or more of the flow visualization techniques

Wearable robotic exoskeleton for overground gait training in sub-acute and chronic hemiparetic stroke patients: preliminary results

BACKGROUND: Recovery of therapeutic or functional ambulatory capacity in post-stroke patients is a primary goal of rehabilitation. Wearable powered exoskeletons allow patients with gait dysfunctions to perform over-ground gait training, even immediately after the acute event.AIM: To investigate the feasibility and the clinical effects of an over-ground walking training with a wearable powered exoskeleton in sub-acute and chronic stroke patients.DESIGN: Prospective, pilot pre-post, open label, non-randomized experimental study.SETTING: A single neurological rehabilitation center for inpatients and outpatients.POPULATION: Twenty-three post-stroke patients were enrolled: 12 sub-acute (mean age: 43.8\ub113.3 years, 5 male and 7 female, 7 right hemiparesis and 5 left hemiparesis) and 11 chronic (mean age: 55.5\ub115.9 years, 7 male and 4 female, 4 right hemiparesis and 7 left hemiparesis) patients.METHODS: Patients underwent 12 sessions (60 min/session, 3 times/week) of walking rehabilitation training using Ekso\u2122, a wearable bionic suit that enables individuals with lower extremity disabilities and minimal forearm strength to stand up, sit down and walk over a flat hard surface with a full weight-bearing reciprocal gait. Clinical evaluations were performed at the beginning of the training period (t0), after 6 sessions (t1) and after 12 sessions (t2) and were based on the Ashworth scale, Motricity Index, Trunk Control Test, Functional Ambulation Scale, 10-Meter Walking Test, 6-Minute Walking Test, and Walking Handicap Scale. Wilcoxon's test (P<0.05) was used to detect significant changes.RESULTS: Statistically significant improvements were observed at the three assessment periods for both groups in Motricity Index, Functional Ambulation Scale, 10-meter walking test, and 6-minute walking test. Sub-acute patients achieved statistically significant improvement in Trunk Control Test and Walking Handicap Scale at t0-t2. Sub-acute and chronic patient did not achieve significant improvement in Ashworth scale at t0-t2.CONCLUSIONS: Twelve sessions of over-ground gait training using a powered wearable robotic exoskeleton improved ambulatory functions in sub-acute and chronic post-stroke patients. Large, randomized multicenter studies are needed to confirm these preliminary data.CLINICAL REHABILITATION IMPACT: To plan a completely new individual tailored robotic rehabilitation strategy after stroke, including task-oriented over-ground gait training

Effects of preoperative Chlorhexidine Gluconate (CHG) cloths educational intervention for preoperative staff on CHG knowledge and surgical site infection rates: a quality improvement initiative.

Abstract Background: Surgical site infections (SSIs) are the most common cause of a surgical complication and account for 38% of all hospital acquired infections (HAI). The cost of caring for SSIs in the United States can range from $3.5-$10 billion annually. Purpose: The purpose of this DNP Quality Improvement (QI) initiative was to improve preoperative staff’s knowledge and application of the Food and Drug Administration (FDA) approved 3-minute application scrub time for the 2% CHG cloths and reduce SSIs for an acute care hospital located in Louisville, Kentucky. Methods: Quality improvement was initiated using the Plan, Do, Study, Act (PDSA) model to provide preoperational 2% CHG cloth education to preoperative staff. Participants included 11 varying preoperative staff members made up of nurses and nursing assistants. Intervention: The intervention was an education program on 2% CHG cloths. Measures and Data Analysis: A 6-item 2% CHG cloth application knowledge questionnaire was used to evaluate participants’ knowledge pre-and post-intervention. Paired t-tests were applied to analyze the differences between the total pre-test and post-test mean scores. Rates of SSIs before and after the intervention were compared using percentage change. Results: Using paired t-test, results showed that participants (n=11) had a significantly lower pre-test mean score (4.45 0.82) of 2% CHG cloth knowledge than post-test mean score (5.45 0.52) (t=4.28, p\u3c0.001). Conclusion: This 2% CHG cloth education initiative helped to increase preoperative staff knowledge and led to a decrease in the organization’s SSIs. Key Words: Preoperative, chlorhexidine gluconate, CHG, cloth, wipes, application time, antisepsis, skin prep, surgery, surgical site infection, SSI preventio

Effectiveness of Using Exercise App in Improving Exercise Adherence and Aerobic Endurance of Football Players

Introduction. The use of mobile apps known as mHealth is starting to shape the delivery of physical therapy care not only in patients but also to the healthy population. Using an exercise app is a potential strategy to promote physical activity among individuals. Thus, this pilot study examined the utility of the Nike® Training Club app in increasing exercise adherence and enhancing aerobic endurance. Methods. The study utilized one-way repeated measures over time quasi-experimental design. It used purposive sampling to select 10 college football players aged 18-25 years old. After downloading the app, the participants were required to perform a workout plan composed of 15–45 minutes workouts through circuit interval training. The 20-day workout plan was done for 6 weeks (3-4 workouts per week). Aerobic endurance was measured at baseline and every after 2 weeks of intervention using Cooper’s 12-minute run test. Results. An extremely high adherence rate (85%, SD = 2.11) to exercise was exhibited by the participants based on recorded logs in the app. Also, the participants agreed that the app was easy to use (x̅ = 3.9, SD = .18) due to its user-friendly interface, uncomplicated design, and comprehensive features. Results also showed an improvement in their aerobic endurance at the end of the 6-week training with a change of 3.8 ml/kg/min, however, ANOVA showed no statistically significant difference in VO2 max from baseline to post-tests [F (3, 10) = 2.18, p = .11]. Discussion. A high adherence to exercise may be achieved when exercise is facilitated using the app. The app has potential to provide information that could lead to improvements in aerobic endurance and can be a useful tool in maintaining an active lifestyle among the well population

SEQ-POINTER: Next generation, planetary spacecraft remote sensing science observation design tool

Since Mariner, NASA-JPL planetary missions have been supported by ground software to plan and design remote sensing science observations. The software used by the science and sequence designers to plan and design observations has evolved with mission and technological advances. The original program, PEGASIS (Mariners 4, 6, and 7), was re-engineered as POGASIS (Mariner 9, Viking, and Mariner 10), and again later as POINTER (Voyager and Galileo). Each of these programs were developed under technological, political, and fiscal constraints which limited their adaptability to other missions and spacecraft designs. Implementation of a multi-mission tool, SEQ POINTER, under the auspices of the JPL Multimission Operations Systems Office (MOSO) is in progress. This version has been designed to address the limitations experienced on previous versions as they were being adapted to a new mission and spacecraft. The tool has been modularly designed with subroutine interface structures to support interchangeable celestial body and spacecraft definition models. The computational and graphics modules have also been designed to interface with data collected from previous spacecraft, or on-going observations, which describe the surface of each target body. These enhancements make SEQ POINTER a candidate for low-cost mission usage, when a remote sensing science observation design capability is required. The current and planned capabilities of the tool will be discussed. The presentation will also include a 5-10 minute video presentation demonstrating the capabilities of a proto-Cassini Project version that was adapted to test the tool. The work described in this abstract was performed by the Jet Propulsion Laboratory, California Institute of Technology, under contract to the National Aeronautics and Space Administration

Tracking Report 2008 Puma, Vietnam 360084912G

This document is part of a digital collection provided by the Martin P. Catherwood Library, ILR School, Cornell University, pertaining to the effects of globalization on the workplace worldwide. Special emphasis is placed on labor rights, working conditions, labor market changes, and union organizing.FLA_2008_Puma_TR_Vietnam_360084912G.pdf: 12 downloads, before Oct. 1, 2020

Smartphone App (2kmFIT-App) for Measuring Cardiorespiratory Fitness: Validity and Reliability Study

FBO research activity was supported by the Spanish Ministry of Economy and Competitiveness—MINECO/FEDER DEP2016-79512-R; the European Union’s Horizon 2020 research and innovation program under Grant Agreement No. 667302; the University of Granada, Plan Propio de Investigación 2016, Unit of Excellence on Exercise and Health (UCEES); the Junta de Andalucía, Consejería de Conocimiento, Investigación y Universidades, and European Regional Development Fund (ERDF), ref. SOMM17/6107/ UGR; the EXERNET Research Network on Exercise and Health in Special Populations (DEP2005-00046/ACTI); and the SAMID III network, RETICS, funded by the PN I+D+I 2017-2021 (Spain), ISCIII Sub-Directorate-General for Research Assessment and Promotion, the European Regional Development Fund (ERDF) (Ref. RD16/002). AN was supported by the Ministry of Economy and Competitiveness and the Instituto de Salud Carlos III through the CIBERFES (CB16/10/00239), the Seneca Foundation through the unit of excellence (Grant 19899/GERM/15), and the Ministry of Science Innovation and Universities RTI2018-093528-B-I00 (all of which are cofinanced by FEDER). CCS is supported by the Spanish Ministry of Science, Innovation and Universities (FJC2018-037925-I). The views expressed are those of the authors and do not reflect the official policy or position of the institutions they belong to.Background: There is strong evidence suggesting that higher levels of cardiorespiratory fitness (CRF) are associated with a healthier metabolic profile, and that CRF can serve as a powerful predictor of morbidity and mortality. In this context, a smartphone app based on the 2-km walk test (UKK test) would provide the possibility to assess CRF remotely in individuals geographically distributed around a country or continent, and even between continents, with minimal equipment and low costs. Objective: The overall aim of this study was to evaluate the validity and reliability of 2kmFIT-App developed for Android and iOS mobile operating systems to estimate maximum oxygen consumption (VO2max) as an indicator of CRF. The specific aims of the study were to determine the validity of 2kmFIT-App to track distance and calculate heart rate (HR). Methods: Twenty participants were included for field-testing validation and reliability analysis. The participants completed the UKK test twice using 2kmFIT-App. Distance and HR were measured with the app as well as with accurate methods, and VO2max was estimated using the UKK test equation. Results: The validity results showed the following mean differences (app minus criterion): distance (& ndash;70.40, SD 51.47 meters), time (& ndash;0.59, SD 0.45 minutes), HR (& ndash;16.75, SD 9.96 beats/minute), and VO2max (3.59, SD 2.01 ml/kg/min). There was moderate validity found for HR (intraclass correlation coefficient [ICC] 0.731, 95% CI & ndash;0.211 to 0.942) and good validity found for VO2max (ICC 0.878, 95% CI & ndash;0.125 to 0.972). The reliability results showed the following mean differences (retest minus test): app distance (25.99, SD 43.21 meters), app time (& ndash;0.15, SD 0.94 seconds), pace (& ndash;0.18, SD 0.33 min/km), app HR (& ndash;4.5, 13.44 beats/minute), and app VO2max (0.92, SD 3.04 ml/kg/min). There was good reliability for app HR (ICC 0.897, 95% CI 0.742-0.959) and excellent validity for app VO2max (ICC 0.932, 95% CI 0.830-0.973). All of these findings were observed when using the app with an Android operating system, whereas validity was poor when the app was used with iOS. Conclusions: This study shows that 2kmFIT-App is a new, scientifically valid and reliable tool able to objectively and remotely estimate CRF, HR, and distance with an Android but not iOS mobile operating system. However, certain limitations such as the time required by 2kmFIT-App to calculate HR or the temperature environment should be considered when using the app.Spanish Ministry of Economy and Competitiveness-MINECO/FEDER DEP2016-79512-REuropean Commission 667302University of Granada, Plan Propio de Investigacion 2016, Unit of Excellence on Exercise and Health (UCEES)Junta de AndaluciaEuropean Commission SOMM17/6107/UGR RD16/002EXERNET Research Network on Exercise and Health in Special Populations DEP2005-00046/ACTISAMID III network, RETICS - PN I+D+I 2017-2021 (Spain)ISCIII Sub-Directorate-General for Research Assessment and PromotionMinistry of Economy and Competitiveness CB16/10/00239Instituto de Salud Carlos III through the CIBERFES CB16/10/00239Fundacion Seneca 19899/GERM/15Ministry of Science Innovation and Universities - FEDER RTI2018-093528-B-I00Spanish Ministry of Science, Innovation and Universities FJC2018-037925-