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  • NUCLEAR ENGINEERING  (2)
  • ELECTRONICS  (1)
  • 1970-1974  (3)
  • 1960-1964
  • 1
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    The Backup-Gilbert method and its application to the electrical conductivity problem (1972)
    In:  CASI
    Details
    Publication Date: 2006-03-12
    Description: The theory of Backus and Gilbert gives a technique for solving the general linear inverse problem. Observational error and lack of data are shown to reduce the reliability of the solution in different ways: the former introduces statistical uncertainties in the model, while the latter smooths out the detail. Precision can be improved by sacrificing resolving power, and vice versa, so that some compromise may be made between the two in choosing the best model. Nonlinear inverse problems can be brought into the domain of the theory by linearizing about a typical solution. The inverse problem of electrical conductivity in the mantle is used to illustrate the Backus-Gilbert technique; an example of the tradeoff diagram is given.
    Keywords: ELECTRONICS
    Type: NASA. Ames Res. Center Math. of Profile Inversion; 8 p
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    The effects of radiation on science instruments during Grand Tour type missions (1971)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Radiation effects on components of science instruments used on outer planets Grand Tour mission
    Keywords: NUCLEAR ENGINEERING
    Type: ; ADEMIE DES SCIENCES
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Effects of proton irradiation on several spacecraft science components. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: In connection with programs for the exploration of the outer planets, several models have been developed and used to analyze the radiation hazard to the spacecraft. Typical components found in space flight science instruments have been tested to determine their capability to function properly before, after and, in some cases during, exposures to energy equivalenced levels predicted by the models. A summary of proton-irradiation tests is provided.
    Keywords: NUCLEAR ENGINEERING
    Format: text
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    NASA TECHNICAL REPORTS
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