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  • 1
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    Imaging of high-Q cavity optical modes by electron energy-loss microscopy (2013)
    American Physical Society (APS)
    Details
    Publication Date: 2013-04-30
    Description: Author(s): N. Le Thomas, D. T. L. Alexander, M. Cantoni, W. Sigle, R. Houdré, and C. Hébert We show a technique that images the intensity distribution and local state of polarization of the optical field of high-quality factor optical modes confined in dielectric planar photonic crystal nanocavities. Based on energy-loss spectroscopy of swift electrons, the technique gives a spatial resolu... [Phys. Rev. B 87, 155314] Published Mon Apr 29, 2013
    Keywords: Semiconductors II: surfaces, interfaces, microstructures, and related topics
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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    PAPER CURRENT
  • 2
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    A geometrical optics approach for the radar cross section of thin shells (1962)
    American Geophysical Union
    Details
    Publication Date: 1962-05-01
    Print ISSN: 0148-0227
    Electronic ISSN: 2156-2202
    Topics: Geosciences
    Published by American Geophysical Union
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    PAPER CURRENT
  • 3
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    A high-speed, large-capacity, 'jukebox' optical disk system (1985)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Two optical disk 'jukebox' mass storage systems which provide access to any data in a store of 10 to the 13th bits (1250G bytes) within six seconds have been developed. The optical disk jukebox system is divided into two units, including a hardware/software controller and a disk drive. The controller provides flexibility and adaptability, through a ROM-based microcode-driven data processor and a ROM-based software-driven control processor. The cartridge storage module contains 125 optical disks housed in protective cartridges. Attention is given to a conceptual view of the disk drive unit, the NASA optical disk system, the NASA database management system configuration, the NASA optical disk system interface, and an open systems interconnect reference model.
    Keywords: COMPUTER OPERATIONS AND HARDWARE
    Type: Computer (ISSN 0018-9162); 18; 36-45
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Image data-processing system for solar astronomy (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The paper describes an image data processing system (IDAPS), its hardware/software configuration, and interactive and batch modes of operation for the analysis of the Skylab/Apollo Telescope Mount S056 X-Ray Telescope experiment data. Interactive IDAPS is primarily designed to provide on-line interactive user control of image processing operations for image familiarization, sequence and parameter optimization, and selective feature extraction and analysis. Batch IDAPS follows the normal conventions of card control and data input and output, and is best suited where the desired parameters and sequence of operations are known and when long image-processing times are required. Particular attention is given to the way in which this system has been used in solar astronomy and other investigations. Some recent results obtained by means of IDAPS are presented.
    Keywords: COMPUTER SYSTEMS
    Type: Applied Optics; 16; Apr. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Optimized techniques and requirements for computer improvement of structural weld radiographs (1971)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Hardware and software specification covers requirements for using subroutines to improve structural weld photographs.
    Keywords: MATHEMATICS AND INFORMATION SCIENCES
    Type: MFS-21627
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    The NEEDS Data Base Management and Archival Mass Memory System (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A Data Base Management System and an Archival Mass Memory System are being developed that will have a 10 to the 12th bit on-line and a 10 to the 13th off-line storage capacity. The integrated system will accept packetized data from the data staging area at 50 Mbps, create a comprehensive directory, provide for file management, record the data, perform error detection and correction, accept user requests, retrieve the requested data files and provide the data to multiple users at a combined rate of 50 Mbps. Stored and replicated data files will have a bit error rate of less than 10 to the -9th even after ten years of storage. The integrated system will be demonstrated to prove the technology late in 1981.
    Keywords: COMPUTER OPERATIONS AND HARDWARE
    Type: AIAA PAPER 80-1908 , Sensor Systems for the 80''s Conference; Dec 02, 1980 - Dec 04, 1980; Colorado Springs, CO
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Automatic Malfunction Analysis (1970)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Automatic Malfunction Analysis /AMA/ digital computer software system supporting checkout and testing, defining normal system status by computer simulation
    Keywords: FACILITIES, RESEARCH, AND SUPPORT
    Type: AIAA PAPER 70-383 , AMERICAN INST. OF AERONAUTICS AND ASTRONAUTICS, TEST EFFECTIVENESS IN THE 70''S CONFERENCE; Apr 01, 1970 - Apr 03, 1970; PALO ALTO, CA
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    NASA TECHNICAL REPORTS
  • 8
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    Image analysis techniques associated with automatic data base generation. (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: This paper considers some basic problems relating to automatic data base generation from imagery, the primary emphasis being on fast and efficient automatic extraction of relevant pictorial information. Among the techniques discussed are recursive implementations of some particular types of filters which are much faster than FFT implementations, a 'sequential similarity detection' technique of implementing matched filters, and sequential linear classification of multispectral imagery. Several applications of the above techniques are presented including enhancement of underwater, aerial and radiographic imagery, detection and reconstruction of particular types of features in images, automatic picture registration and classification of multiband aerial photographs to generate thematic land use maps.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: AIAA PAPER 73-430 , Computer Network Systems Conference; Apr 16, 1973 - Apr 18, 1973; Huntsville, AL
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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    Automatic information extraction for land use and agricultural applications (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Description of some current work in interpretation technique development for automatic computer-aided image information extraction related to various application areas, including land use mapping and agricultural survey and monitoring. In particular, the application of a fast template matching algorithm, employing the sequential similarity detection principle, to image registration, linear feature detection, and the extraction and enumeration of scene objects is discussed and illustrated.
    Keywords: GEOPHYSICS
    Type: Symposium on Management and utilization of remote sensing data; Oct 29, 1973 - Nov 01, 1973; Sioux Falls, SD
    Format: text
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    NASA TECHNICAL REPORTS
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