In this paper, we demonstrated that the multiple turning point problems within the framework of the Wentzel-Kramers-Brillouin (WKB) approximation method can be reduced to two turning point one for a ...

Abstract: In this note we present a powerful new approach to the analysis of a class of linear, degenerate gradient flow systems that frequently arise in adaptive control and system identification.

Abstract: In modern fabrication techniques, it is possible to fabricate nanostructure based semiconductor devices whose dimensions are much more comparable to the de Broglie wavelength of the electron ...

A three-dimensional WKB approximation for high-energy electron scattering on nuclei is derived and approximated analytically in the vicinity of the nucleus. This approximation contains five parameters ...

Electromagnetic scattering and diffraction analysis is a critical field that underpins our understanding of wave interactions with various obstacles and interfaces. This area of research encompasses ...