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A variational method called discrete variable representation is applied to study the energy spectra of two interacting electrons in a quantum dot with a three-dimensional anisotropic harmonic confinement potential. This method, applied originally to problems in molecular physics and theoretical chemistry, is here used to solve the eigenvalue equation to relative motion between the electrons. The two-electron quantum dot spectrum is determined then with a precision of at least six digits. Moreover, the electron correlation energies for various potential confinement parameters are investigated for singlet and triplet states. When possible, the present results are compared with the available theoretical values. 相似文献
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Ferreira O. P. Lemes M. Prudente L. F. 《Computational Optimization and Applications》2022,81(1):91-125
Computational Optimization and Applications - The purpose of this paper is to present an inexact version of the scaled gradient projection method on a convex set, which is inexact in two sense.... 相似文献
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Gonçalves M. L. N. Lima F. S. Prudente L. F. 《Computational Optimization and Applications》2022,83(2):403-434
Computational Optimization and Applications - We propose two Newton-type methods for solving (possibly) nonconvex unconstrained multiobjective optimization problems. The first is directly inspired... 相似文献
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C H Liu B B Das W L Sha Glassman G C Tang K M Yoo H R Zhu D L Akins S S Lubicz J Cleary R Prudente 《Journal of photochemistry and photobiology. B, Biology》1992,16(2):187-209
Studies of Raman scattering, fluorescence and time-resolved light scattering were conducted on cancer and normal biomedical media. Fourier transform Raman spectroscopic measurements were performed on human normal, benign and cancerous tissues from gynecological (GYN) tracts. A comparison of the intensity differences between various Raman modes as well as the number of Raman lines, enables one to distinguish normal GYN tissues from diseased tissues. Fluorescence spectroscopic measurements on human breast tissues show that the ratio of fluorescence intensity at 340 nm to that at 440 nm can be used to distinguish between cancerous and non-cancerous tissues. Separate studies on normal and cancerous breast cell lines show spectral differences. The measurements of back-scattered ultrafast laser pulses from human breast tissues show differences in the scattered pulse profiles for different tissues. These studies show that various optical techniques have the potential to be used in medical diagnostic applications. 相似文献
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Díaz Millán R. Ferreira O. P. Prudente L. F. 《Computational Optimization and Applications》2021,80(1):245-269
Computational Optimization and Applications - The classical convex feasibility problem in a finite dimensional Euclidean space consists of finding a point in the intersection of two convex sets. In... 相似文献