Results 221 to 230 of about 210,580 (265)
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Pairings in the shell model (III)
Nuclear Physics, 1961Abstract (1) The Casimir operators in U Ω , SU Ω and Sp Ω are explicitly given, so that the relation of the pairing forces to these operators can be seen easily. (2) As a result, it is clearly shown that the pairing forces for a specific case of the intermediate pairing scheme (the normal case in sect. 2) as well as those for the L - S and the j
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A discrete model of thin shells
ACM SIGGRAPH ASIA 2008 courses on - SIGGRAPH Asia '08, 2005We present a discrete model for the behavior of thin flexible structures, such as hats, leaves, and aluminum cans, which are characterized by a curved undeformed configuration. Previously such models required complex continuum mechanics formulations and correspondingly complex algorithms.
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MULTI-MAJOR-SHELL SHELL MODEL FOR HEAVY NUCLEI–AN EXTENDED PROJECTED SHELL MODEL
International Journal of Modern Physics E, 2008The projected shell model (PSM) in its original version is an efficient shell model truncation scheme for well deformed nuclei. However, the model is applicable only to rotational motion, but not collective vibrations. In this paper, we discuss a scheme that extends the PSM applicability to low-lying rotational and vibrational states possibly in all ...
YANG SUN, CHENG-LI WU
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Shell PCA: Statistical Shape Modelling in Shell Space
2015 IEEE International Conference on Computer Vision (ICCV), 2015In this paper we describe how to perform Principal Components Analysis in "shell space". Thin shells are a physical model for surfaces with non-zero thickness whose deformation dissipates elastic energy. Thin shells, or their discrete counterparts, can be considered to reside in a shell space in which the notion of distance is given by the elastic ...
Chao Zhang 0023 +3 more
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Dynamical Content of the Shell Model
Physica Scripta, 1983A critical discussion is given of several recent attempts to introduce dynamical content in the shell model by means of adding corrections to the Hartree-Fock approximation. Numerical results are given single-particle neutron energies in 208Pb.
Mahaux, C., Ngo, H.
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Nuclear Physics A, 2001
Abstract The development and limitations of the conventional shell-model calculations are mentioned. In order to overcome the limitations, the Quantum Monte Carlo Diagonalization (QMCD) method has been proposed. The basic formulation and features of the QMCD method are presented as well as its application to the nuclear shell model, as referred to as
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Abstract The development and limitations of the conventional shell-model calculations are mentioned. In order to overcome the limitations, the Quantum Monte Carlo Diagonalization (QMCD) method has been proposed. The basic formulation and features of the QMCD method are presented as well as its application to the nuclear shell model, as referred to as
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A New Linear Shell Model for Shells with Little Regularity
Journal of Elasticity, 2014In this paper, a new model of linearly elastic shell is formulated. The model is of Koiter’s type capturing the membrane and bending effects. However, the model is well formulated for shells with little regularity, namely the shells whose middle surface is parameterized by a W^{; ; ; 1, ∞}; ; ; function.
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Shell-prototype clustering models
Proceedings of ICNN'95 - International Conference on Neural Networks, 2002We extend c-shells clustering to arbitrary norms (including nondifferentiable norms from the Minkowski family); and we show that prototypes similar to the inner product norm based shell prototypes families can be generalized to any norm on /spl Rscr//sup S/ for the hard, fuzzy and possibilistic cases.
James C. Bezdek +2 more
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Shape diffusion in the shell model
Physical Review C, 1992The diffusion coefficient for quadrupolar shape changes is derived in a model based on the mixing of static Hartree-Fock configurations by the residual interaction. The model correctly predicts the width of single-particle configurations. We find a diffusion rate depending on temperature as {ital T}{sup 3}, consistent with at least one other ...
, Bush, , Bertsch, , Brown
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