Showing 101 - 120 results of 375 for search '"NASA"', query time: 0.04s Refine Results
  1. 101

    L1 and Off Sun‐Earth Line Visible‐Light Imaging of Earth‐Directed CMEs: An Analysis of Inconsistent Observations by Richard A. Harrison, Jackie A. Davies, David Barnes, Christian Möstl

    Published 2023-04-01
    “…Abstract The efficacy of coronal mass ejection (CME) observations as a key input to space weather forecasting is explored by comparing on and off Sun‐Earth line observations from the ESA/NASA SOHO and NASA STEREO spacecraft. A comparison is made of CME catalogs based on L1 coronagraph imagery and off Sun‐Earth line coronagraph and heliospheric imager observations, for the year 2011. …”
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    High-Electron-Mobility SiGe on Sapphire Substrate for Fast Chipsets by Hyun Jung Kim, Yeonjoon Park, Hyung Bin Bae, Sang H. Choi

    Published 2015-01-01
    “…Therefore, radio frequency devices which are made with rhombohedral SiGe on c-plane sapphire can potentially run a few times faster than RF devices on SOS wafers. NASA Langley has successfully grown highly ordered single crystal rhombohedral epitaxy using an atomic alignment of the [111] direction of cubic SiGe on top of the [0001] direction of the sapphire basal plane. …”
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    Engineering Application of an Identification Method to Shock-Induced Vortex Stability in the Transonic Axial Fan Rotor by Yan Xue, Ning Ge

    Published 2021-01-01
    “…In the present paper, the steady RANS (Reynolds-Averaged Navier-Stokes) simulations based on our independently developed CFD (Computational Fluid Dynamics) solver NUAA-Turbo 2.0, are carried out to investigate the shock wave/tip leakage vortex (SW/TLV) interaction in two representative transonic axial fan rotors, NASA Rotor 67 and NASA Rotor 37. The intent of this study is mainly to verify if an identification method derived from relevant theories is suitable for shock-induced vortex stability in the real engineering environment. …”
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    Survey of software assurance by FANG Bin-xing1, LU Tian-bo2, LI Chao1

    Published 2009-01-01
    “…Firstly,various definitions of software assurance were discussed,the key properties of software assurance were summarized,and the software assurance model S3R(security,safety,reliability,survivability) was proposed to describe the discipline of software assurance.Then,the software assurance programs of DHS,DOD and NASA were highly in-troduced as well as S3R development.Finally,the software assurance standards-setting was specified and the develop-ment trends of software assurance research were pointed.…”
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    Influence of mental workload on professional identity of nursing students who were born between 1995 and 1999 (“95后”护生工作心理负荷对职业认同的影响) by LU Sheng (陆晟), WANG Zhenmeng (王振猛), SHENG Yuehong (盛月红)

    Published 2022-07-01
    “…(目的 探讨“95后”护生工作心理负荷对职业认同影响, 为提升其职业认同感提供依据, 为护理管理者决策提供相关建议。方法 采用一般资料问卷、护士版NASA任务负荷指数量表、护生职业认同问卷调查在上海市某三级甲等医院实习的“95后”护生。结果 共发放问卷302份, 回收有效问卷292份, 有效回收率96. 69%。…”
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    Cardiac Function and Fatigue During Exoskeleton-Assisted Sit-to-Stand Maneuver and Walking in People with Stroke with Moderate to Severe Gait Disability: A Pilot Cross-Sectional St... by Raimondas Kubilius, Darius Ruočkus, Vitalija Stonkuvienė, Rugilė Vareikaitė, Rebecca Cardini, Thomas Bowman

    Published 2024-12-01
    “…However, walking and sit-to-stand tasks seem to be more challenging according to the NASA-TLX. Only one participant scored over 70 points on the System Usability Scale. …”
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