Mostrando 1,441 - 1,460 Resultados de 1,629 Para Buscar '"NASA"', tiempo de consulta: 0.19s Limitar resultados
  1. 1441
    “…The next NASA-led Mars mission (Mars 2020) will carry a suite of instrumentation dedicated to investigating Martian history and the in situ detection of potential biosignatures. …”
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  2. 1442
    “…The task induced a significant mental workload (visual analog scale of fatigue from 27 ± 26 to 50 ± 31 mm, p < 0.001, and NASA-TLX score of 56 ± 17). The heart rate, blood pressure and baroreflex function were unchanged, whereas most of the HRV parameters markedly decreased. …”
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  3. 1443
    “…NASA’S Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) spacecraft recently arrived at near-Earth asteroid (101955) Bennu, a primitive body that represents the objects that may have brought prebiotic molecules and volatiles such as water to Earth [1]. …”
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  4. 1444
    “…The Miniature X-ray Solar Spectrometer (MinXSS) CubeSat is the first solar science oriented CubeSat mission flown for the NASA Science Mission Directorate, with the main objective of measuring the solar soft X-ray (SXR) flux and a science goal of determining its influence on Earth’s ionosphere and thermosphere. …”
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  5. 1445
    “…METHODS: In a nationwide study, German paramedics were asked to evaluate single missions for perceived workload by completing the NASA Task-Load-Index (TLX). A variety of candidate variables were documented and tested for influence on the TLX through multivariate regression analysis. …”
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  6. 1446
    “…To accomplish this, we developed a refinement to the traditional NASA Ames single housing HU system to accommodate social housing in pairs, retaining desirable features of the original design. …”
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  7. 1447
    “…The data analysis focused on the task effectiveness and the subjects’ subjective feedback from the NASA task load index (N-TLX) questionnaire and semi-structured interviews. …”
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  8. 1448
    “…METHODS: Paramedics rated missions retrospectively through an online questionnaire. We used the NASA-Task Load Index (TLX) to quantify workload and asked about a variety of medical and procedural aspects for each mission. …”
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  9. 1449
    “…The outcome measures were time to accomplish the task, semi-autonomous system misclassification rate, subjective rating of intuitiveness, and perceived workload (NASA TLX). RESULTS: The results demonstrated that the novel control interface substantially outperformed the SoA myoelectric control. …”
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  10. 1450
    “…CL was measured objectively using reaction time testing during simulation and subjectively using the NASA-TLX and PAAS questionnaires. The study was carried out at a simulation center from November 2016 to March 2019. …”
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  11. 1451
    “…Although several studies have attempted to improve observation of this energy window, development of a detector for astronomy has not progressed since NASA launched the Compton Gamma Ray Observatory (CGRO) in 1991. …”
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  12. 1452
    “…Capabilities were developed to perform experiments in low earth orbit with on-board sample recovery, thereby avoiding complications caused by return to Earth. For NASA’s Rodent Research-1 mission, female mice (ten 32 wk C57BL/6NTac; ten 16 wk C57BL/6J) were launched on an unmanned vehicle, then resided on the International Space Station for 21/22d or 37d in microgravity. …”
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  13. 1453
    por Beloconi, Anton, Vounatsou, Penelope
    Publicado 2020
    “…The tropospheric values of [Formula: see text] derived from the ozone monitoring instrument (OMI) onboard the National Aeronautics and Space Administration’s (NASA’s) Aura satellite were converted to near ground [Formula: see text] concentration proxies using simulations from the 3-D global CTM (GEOS-Chem) at 0.5°  [Formula: see text]  0.625° spatial resolution and surface-to-column [Formula: see text] ratios. …”
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  14. 1454
    “…To quantify microgravity-induced bone loss in humans, we performed a meta-analysis of studies systematically identified from searching Medline, Embase, Web of Science, BIOSIS, NASA Technical reports, and HathiTrust, with the last update in November 2019. …”
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  15. 1455
    “…However, these lockdown which began worldwide from January 23, have had a significant impact on the environment and on the air quality of cities as recently reported by NASA (National Aeronautics and Space Administration) and ESA (European Space Agency), with reductions according to them of up to 30% in some of the epicenters such as the case of Wuhan. …”
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  16. 1456
    “…The positive pressure hood was also competent in keeping clean air quality that meets the standard class 100 of NASA’s bio-clean room category. CONCLUSIONS: The proposed new applications will broaden the range of the hood’s usage. …”
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  17. 1457
    “…This study presents a workflow for cropland phenology characterization and mapping based on time series of green Leaf Area Index (LAI) generated from NASA’s Harmonized Landsat 8 (L8) and Sentinel-2 (S2) surface reflectance dataset from 2016 to 2019. …”
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  18. 1458
  19. 1459
    “…Cecal intubation (CI) success, time to cecum, and user experience (NASA task load index) were measured. Learning curves were determined by the number of trials needed to reach minimum and average proficiency—defined as the slowest average CI time by an experienced user and the average CI time by all experienced users, respectively. …”
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  20. 1460
    “…Subjective measurements included cognitive task load (NASA-TLX), rate of perceived exertion, thermal sensation, and thermal comfort. …”
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