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  • Other Sources  (9)
  • ASTROPHYSICS  (5)
  • BIOSCIENCES  (2)
  • ELECTRONICS  (2)
  • 1
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    Rhythm of detached and dissected bean leaf. (1968)
    In:  Other Sources
    Details
    Publication Date: 2011-08-12
    Description: Space environment effect on leaf rhythms of bean plants
    Keywords: BIOSCIENCES
    Type: ; ADEMIE DES SCIENCES
    Format: text
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  • 2
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    Soft inflation (1990)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The cosmology resulting from two coupled scalar fields was studied, one which is either a new inflation or chaotic type inflation, and the other which has an exponentially decaying potential. Such a potential may appear in the conformally transformed frame of generalized Einstein theories like the Jordan-Brans-Dicke theory. The constraints necessary for successful inflation are examined. Conventional GUT models such as SU(5) were found to be compatible with new inflation, while restrictions on the self-coupling constant are significantly loosened for chaotic inflation.
    Keywords: ASTROPHYSICS
    Type: NASA-CR-186593 , NAS 1.26:186593 , WU-AP/07/90 , UTAP-107/90 , FERMILAB-PUB-90/52-A
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  • 3
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    Recording Leaf Movements with a Strain Gauge (1964)
    In:  CASI
    Details
    Publication Date: 2019-05-30
    Description: Lightweight strain gauge sensing unit for recording circadian leaf movements in space environment
    Keywords: BIOSCIENCES
    Type: NASA-CR-59801
    Format: application/pdf
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  • 4
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    Phase transitions triggered by quantum fluctuations in the inflationary universe (1991)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The dynamics of a second-order phase transition during inflation, which is induced by time-variation of spacetime curvature, is studied as a natural mechanism to produce topological defects of typical grand unification scales such as cosmic strings or global textures. It is shown that their distribution is almost scale-invariant with small- and large-scale cutoffs. Also discussed is how these cutoffs are given.
    Keywords: ASTROPHYSICS
    Type: NASA-CR-188698 , NAS 1.26:188698 , FERMILAB-PUB-91/186-A , UTAP-128/91
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  • 5
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    The inverse problem of the optimal regulator. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The inverse problem of the optimal regulator is considered for a general class of multi-input systems with integral-type performance indices. A new phase variable canonical form is shown to be convenient for this analysis. The advantage of the canonical form is to separate the state variables into subvectors of directly controlled, indirectly controlled, and uncontrollable components. Necessary and sufficient conditions for optimized performance indices are given. With the nonlinearities of the system restricted to functions of the directly controlled state variables, additional results are developed about the nonnegative property of optimized loss functions.
    Keywords: ELECTRONICS
    Type: IEEE Transactions on Automatic Control; AC-17; Aug. 197
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  • 6
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    The inverse problem of the optimal regulator (1969)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Inverse problem of optimal regulator for class of systems with integral type performance indices
    Keywords: ELECTRONICS
    Type: NASA-CR-109079 , CSS-69-12
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  • 7
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    Baryon isocurvature scenario in inflationary cosmology - A particle physics model and its astrophysical implications (1991)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: A phenomenological model to produce isocurvature baryon-number fluctuations is proposed in the framework of inflationary cosmology. The resulting spectrum of density fluctuation is very different from the conventional Harrison-Zel'dovich shape. The model, with the parameters satisfying several requirements from particle physics and cosmology, provides an appropriate initial condition for the minimal baryon isocurvature scenario of galaxy formation discussed by Peebles.
    Keywords: ASTROPHYSICS
    Type: Astrophysical Journal, Part 1 (ISSN 0004-637X); 379; 427-439
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  • 8
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    Soft inflation (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: The cosmology resulting from two coupled scalar fields was studied, one which is either a new inflation or chaotic type inflation, and the other which has an exponentially decaying potential. Such a potential may appear in the conformally transformed frame of generalized Einstein theories like the Jordan-Brans-Dicke theory. The constraints necessary for successful inflation are examined. Conventional GUT models such as SU(5) were found to be compatible with new inflation, while restrictions on the self-coupling constant are significantly loosened for chaotic inflation.
    Keywords: ASTROPHYSICS
    Type: Physical Review Letters (ISSN 0031-9007); 65; 141-144
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  • 9
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    Probing the statistics of primordial fluctuations and their evolution (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-08-27
    Description: The statistical distribution of fluctuations on various scales is analyzed in terms of the counts in cells of smoothed density fields, using volume-limited samples of galaxy redshift catalogs. It is shown that the distribution on large scales, with volume average of the two-point correlation function of the smoothed field less than about 0.05, is consistent with Gaussian. Statistics are shown to agree remarkably well with the negative binomial distribution, which has hierarchial correlations and a Gaussian behavior at large scales. If these observed properties correspond to the matter distribution, they suggest that our universe started with Gaussian fluctuations and evolved keeping hierarchial form.
    Keywords: ASTROPHYSICS
    Type: Astrophysical Journal, Part 1 (ISSN 0004-637X); 403; 2; p. 450-465.
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