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Svyatoslav Gryaznov - One of the best experts on this subject based on the ideXlab platform.

  • Deconvolution of a Discrete Uniform Distribution
    Statistics & Probability Letters, 2016
    Co-Authors: Anatoly Zhigljavsky, Nina Golyandina, Svyatoslav Gryaznov
    Abstract:

    Let ξ be a Discrete random variable (r.v.) with Uniform Distribution on the support set {0,1,…,N}. We study the problem of construction of non-degenerate independent r.v.’s ξ1 and ξ2 such that ξ=ξ1+ξ2, if these r.v.’s exist. We describe a general form for the solutions to this problem, offer some analytic constructions and develop algorithms for computing the Distributions of ξ1 and ξ2.

Sinan Calik - One of the best experts on this subject based on the ideXlab platform.

Chun-tao Chang - One of the best experts on this subject based on the ideXlab platform.

Anatoly Zhigljavsky - One of the best experts on this subject based on the ideXlab platform.

  • Deconvolution of a Discrete Uniform Distribution
    Statistics & Probability Letters, 2016
    Co-Authors: Anatoly Zhigljavsky, Nina Golyandina, Svyatoslav Gryaznov
    Abstract:

    Let ξ be a Discrete random variable (r.v.) with Uniform Distribution on the support set {0,1,…,N}. We study the problem of construction of non-degenerate independent r.v.’s ξ1 and ξ2 such that ξ=ξ1+ξ2, if these r.v.’s exist. We describe a general form for the solutions to this problem, offer some analytic constructions and develop algorithms for computing the Distributions of ξ1 and ξ2.

Yun Wang - One of the best experts on this subject based on the ideXlab platform.

  • grain area as a statistical weight for polycrystal constituents
    Journal of Glaciology, 2004
    Co-Authors: Olivier Gagliardini, Gael Durand, Yun Wang
    Abstract:

    By using recently developed automatic instruments for fabric and texture measurements on ice, both the c-axis orientation and area of the individual crystals can be determined. Each grain can then be associated with its volume fraction, defined as a function of its measured cross-sectional area, to describe the microstructure of a a polycrystal. The relevance of this approach is studied using a three-dimensional microstructure obtained from the Potts model. In particular, the area weighting is compared to the classical implicit equal weighting used by glaciologists, which assumes that all the grains have the same volume fraction (Discrete Uniform Distribution). Then, using the measurements of c-axis orientation and crystal size performed on the North Greenland Icecore Project (NorthGRIP) ice core, we compare area-weighted and equal-weighted fabrics. All these comparisons are made with respect to the orientation tensor. According to the ability of the Potts model to reproduce the ice microstructure, it is shown that using the grain cross-sectional area to infer its volume fraction improves the description of the actual polycrystal fabric.