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Stephan Morgenthaler John W. Tukey 《Journal of computational and graphical statistics》2013,22(1):180-195
Abstract This article introduces a family of distributional shapes which is flexible in the sense that it contains skewed and symmetric laws as well as heavy-tailed and light-tailed laws. The proposed family is also practically convenient because it is easy to fit to a table of quantiles from any distribution. Inversely, for each of the distributional shapes it is trivial to compute quantiles for any desired probability, and it is possible to compute the corresponding densities. 相似文献
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The shell correction method is applied to calculate the shapes and binding energies of Na clusters. The axial equilibrium shapes are calculated by minimizing five deformation parameters simultaneously. Strong deviations from spheroidal shapes including reflection asymmetric ones are found. The influence of cluster deformation on the separation energies and ionization potentials and on the splitting of the photo - resonance are compared with the available experimental data. The N-dependence of the cluster shape and its relation to the N- and Z-dependences of the nuclear shape is discussed. 相似文献
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