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  • 1985-1989  (3)
  • 1880-1889
  • Computational geometry  (2)
  • 24.75+  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Decomposition and intersection of simple splinegons (1988)
    Springer
    Algorithmica 3 (1988), S. 473-485 
    Details
    ISSN: 1432-0541
    Keywords: Computational geometry ; Curves ; Simplicity testing ; Intersection detection ; Monotone decomposition ; Convex decomposition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract A splinegon is a polygon whose edges have been replaced by “well-behaved” curves. We show how to decompose a simple splinegon into a union of monotone pieces and into a union of differences of unions of convex pieces. We also show how to use a fast triangulation algorithm to test whether two given simple splinegons intersect. We conclude with examples of splinegons that make the extension of algorithms from polygons to splinegons difficult.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01762127
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Primitives for the manipulation of three-dimensional subdivisions (1989)
    Springer
    Algorithmica 4 (1989), S. 3-32 
    Details
    ISSN: 1432-0541
    Keywords: Three-dimensional cell complexes ; Data structures ; Computational geometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract Algorithms for manipulating three-dimensional cell complexes are seldom implemented due to the lack of a suitable data structure for representing them. Such a data structure is proposed here along with the primitive operations necessary to make it useful. Applications of the structure are also given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01553877
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Study of the reaction238U (α, α′f) atE α=480 MeV (1987)
    Springer
    The European physical journal 326 (1987), S. 367-372 
    Details
    ISSN: 1434-601X
    Keywords: 24.50+ ; 24.75+ ; 25.60.C ; 25.70.B ; 25.85.J ; 21.60E
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The excitation function of the fission probability P E E x) for238U has been measured in the reaction238U(α, α′ f) at 480 MeV bombarding energy. The reaction mechanism of this reaction is discussed for excitation energies belowB nf , the threshold for second chance fission, and aboveB nf up toE x =37 MeV. In comparing with results from fission induced by photons and by particle transfer reactions the (α, α′f) reaction gives too low values for the fission probabilityP f at excitation energies well aboveB nE . The role of the quasi-elastic knock-out process in this reaction is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01289539
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    Paper (German National Licenses)
    Fulltext
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