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  • ASTRONAUTICS (GENERAL)  (1)
  • Nuclear Physics  (1)
  • Polymer-Brownian dynamics
  • 1
    Electronic Resource
    Electronic Resource
    Application of a parallel computer system to polymer calculations (1987)
    Springer
    Theoretical chemistry accounts 72 (1987), S. 291-295 
    Details
    ISSN: 1432-2234
    Keywords: Polymer-Brownian dynamics ; Scaling ; Parallel processing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The LCAP (loosely coupled array of processors) parallel processing systems developed at IBM Kingston have been employed in the simulation of Brownian dynamics on ring polymers. Significant speedups over the serial version of the FORTRAN code have been obtained by using bulk shared memories to expedite information passing between the attached array processors. In this manner we have been able to obtain data for chains with 128 and 256 units. Data on these larger chains indicate that the radius of gyration follows the predicted power law.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00529033
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    Paper (German National Licenses)
    Fulltext
  • 2
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    New Measurement of the Direct $3α$ Decay from the $^{12}\mathrm{C}$ Hoyle State (2017)
    American Physical Society (APS)
    Details
    Publication Date: 2017-09-26
    Description: Author(s): R. Smith, Tz. Kokalova, C. Wheldon, J. E. Bishop, M. Freer, N. Curtis, and D. J. Parker Two experiments provide the most precise picture to date of how an excited state of carbon decays into three helium nuclei. [Phys. Rev. Lett. 119, 132502] Published Mon Sep 25, 2017
    Keywords: Nuclear Physics
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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    PAPER CURRENT
  • 3
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    OPS MCC level B/C formulation requirements: Area targets and space volumes processor (1979)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The level B/C mathematical specifications for the area targets and space volumes processor (ATSVP) are described. The processor is designed to compute the acquisition-of-signal (AOS) and loss-of-signal (LOS) times for area targets and space volumes. The characteristics of the area targets and space volumes are given. The mathematical equations necessary to determine whether the spacecraft lies within the area target or space volume are given. These equations provide a detailed model of the target geometry. A semianalytical technique for predicting the AOS and LOS time periods is disucssed. This technique was designed to bound the actual visibility period using a simplified target geometry model and unperturbed orbital motion. Functional overview of the ATSVP is presented and it's detailed logic flow is described.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-TM-80485 , REPT-79-FM-26 , JSC-16029
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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