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  • 1
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    A statistical model of the photomultiplier gain process with applications to optical pulse detection (1982)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: A Markov diffusion model was used to determine an approximate probability density for the random gain. This approximate density preserves the correct second-order statistics and appears to be in reasonably good agreement with experimental data. The receiver operating curve for a pulse counter detector of PMT cathode emission events was analyzed using this density. The error performance of a simple binary direct detection optical communication system was also derived.
    Keywords: OPTICS
    Type: The Telecommun. and Data Acquisition Rept.; p 55-67
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Quadratic integer programming for large scale banded matrices (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: This paper is concerned with the integer quadratic program where the variables are constrained to belong to a given set of discrete values. This quadratic integer program is shown to be equivalent to a problem of finding the shortest path in a particular directed graph called a trellis when the matrix is a positive-definite symmetric banded matrix. An efficient procedure for solving this shortest path problem is presented which allows the solution of the integer quadratic program. This method is particularly effective when the half-bandwidth of the matrix is significantly smaller than its dimension.
    Keywords: NUMERICAL ANALYSIS
    Format: text
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    NASA TECHNICAL REPORTS
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