Showing 181 - 200 results of 371 for search '"USAF"', query time: 0.23s Refine Results
  1. 181

    Effect of Passivation Layer on the Thin Film Perovskite Random Lasers by Subha Prakash Mallick, Yu-Heng Hong, Lih-Ren Chen, Tsung Sheng Kao, Tien-Chang Lu

    Published 2020-05-01
    “…With the advantages of reduced coherent artifacts and low spatial coherence, speckle free projection images of the USAF (U. S. Air Force MIL-STD-150A standard of 1951) resolution test chart are shown for different PS-based random lasers.…”
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  2. 182
  3. 183

    Resolution Enhancement in Coherent Diffraction Imaging Using High Dynamic Range Image by Yuanyuan Liu, Qingwen Liu, Shuangxiang Zhao, Wenchen Sun, Bingxin Xu, Zuyuan He

    Published 2021-09-01
    “…With the fused diffraction patterns, the resolution of the coherent diffraction imaging can be effectively improved. The experiments on USAF resolution card is carried out to verify the effectiveness of our proposed method, in which the spatial resolution is improved by 1.8 times using the high dynamic range imaging technology.…”
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  4. 184
  5. 185

    The Structure Research and Design for Beam Steering and Adjustment in Golay3 Sparse-Aperture Imaging System by Junhong Qian, Xiaoyan Wu, Hewei Liu, Xiubao Hua, Ye Tao, Rongzhu Zhang

    Published 2022-04-01
    “…The piston error is controlled within 12 μm and the tilt error is controlled within 1200 μrad through the mechanical rough adjustment light path using a large-diameter collimation as the point light source, which realizes the confocality of three beams and mutual interference between two beams. With the USAF1951 resolution test panel display in the distance as the surface target, the adjustable piezoelectric ceramics control the piston error within 55 nm and the tilt error within 0.25 μrad, obtaining the surface target imaging result of the sparse aperture.…”
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  6. 186

    Further Studies into Crack Growth in Additively Manufactured Materials by Athanasios P. Iliopoulos, Rhys Jones, John G. Michopoulos, Nam Phan, Calvin Rans

    Published 2020-05-01
    “…Understanding and characterizing crack growth is central to meeting the damage tolerance and durability requirements delineated in USAF Structures Bulletin EZ-SB-19-01 for the utilization of additive manufacturing (AM) in the sustainment of aging aircraft. …”
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  7. 187
  8. 188

    A Fast Neutron Radiography System Using a High Yield Portable DT Neutron Source by David L. Williams, Craig M. Brown, David Tong, Alexander Sulyman, Charles K. Gary

    Published 2020-11-01
    “…Resolution measurements were made using a custom-built, plastic, USAF-1951 resolution chart, of dimensions 125 × 98 × 25.4 mm<sup>3</sup>, and by calculating the modulation transfer function from the edge-spread function from edges of plastic and steel objects. …”
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  9. 189
  10. 190

    Evaluation of the optical performance for aspheric intraocular lenses in relation with tilt and decenter errors. by Jesús Pérez-Gracia, Alejandra Varea, Jorge Ares, Juan A Vallés, Laura Remón

    Published 2020-01-01
    “…Image quality was evaluated from the modulation transfer functions (MTFs), through-focus modulation transfer functions (TF-MTFs), root mean square (RMS) values of defocus, astigmatism and coma, and images of the United States Air Force (USAF) target were taken. A comparison with the optical performance of spherical IOLs has also been performed. …”
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  11. 191

    Thoughts on the Importance of Similitude and Multi-Axial Loads When Assessing the Durability and Damage Tolerance of Adhesively-Bonded Doublers and Repairs by Rhys Jones, Ramesh Chandwani, Chris Timbrell, Anthony J. Kinloch, Daren Peng

    Published 2023-11-01
    “…Consequently, this paper focuses on the tools needed to address sustainment issues associated with both adhesively bonded doublers and adhesively bonded repairs to (metallic) aircraft structures, in a fashion that is consistent with the building-block approach mandated in the United States Air Force (USAF) airworthiness certification standard MIL-STD-1530D and also in the United States (US) Joint Services Structural Guidelines JSSG-2006. …”
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  12. 192
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  16. 196

    Review of Indonesian government policy in procurement plan of Dassault Rafale fighter aircraft by Achmad Wardana, Taufik Budi Cahyana, Hudoro Tahdi, Y. H. Yogaswara

    Published 2022-08-01
    “…In addition, purchase of the Dassault Rafale aircraft must provide effectiveness to improve national defense and security by using a definitive combination of "high-low" that can be adopted from the USAF (United States Air Force), and also Indonesia must be realistic in responding to the regional balance of power (ASEAN) through the realization of the MEF towards IEF. …”
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  17. 197
  18. 198

    Requirements and Variability Affecting the Durability of Bonded Joints by Rhys Jones, Daren Peng, John G. Michopoulos, Anthony J. Kinloch

    Published 2020-03-01
    “…Finally, it is shown that this upper-bound curve can be used to (a) compare and characterise structural adhesives, (b) determine/assess a &#8220;no growth&#8221; design (if required), (c) assess if a disbond in an in-service aircraft will grow and (d) to design and life in-service adhesively-bonded joints in accordance with the slow-growth approach contained in the United States Air Force (USAF) certification standard MIL-STD-1530D.…”
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  19. 199

    Polychromatic Assessment of a Refractive Segmented EDOF Intraocular Lens by Scott García, Luís Salvá, Salvador García-Delpech, Anabel Martínez-Espert, Vicente Ferrando, Diego Montagud-Martínez

    Published 2022-03-01
    “…As a consequence of the LCA, the TF-MTF values in white light were lower than in monochromatic light. Images of the USAF test chart were obtained to confirm the prediction of the TF-MTFs. …”
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  20. 200

    FORMOSAT-3/COSMIC Spacecraft Constellation System, Mission Results, and Prospect for Follow-On Mission by Chen-Joe Fong, Nick L. Yen, Chung-Huei Chu, Shan-Kuo Yang, Wen-Tzong Shiau, Cheng-Yung Huang, Sien Chi, Shao-Shing Chen, Yuei-An Liou, Ying-Hwa Kuo

    Published 2009-01-01
    “…The mission is jointly developed by Taiwan¡¦s National Space Organization (NSPO) and the United States¡¦UCAR in collaboration with NSF, USAF, NOAA, NASA, NASA's Jet Propulsion Laboratory, and the US Naval Research Laboratory. …”
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