Zobrazeno 1 - 10
of 131
pro vyhledávání: '"Li-Wen Du"'
Publikováno v:
Diagnostic and Interventional Radiology, Vol 29, Iss 3, Pp 469-477 (2023)
PURPOSETo determine whether the primary tumor features derived from conventional ultrasound (US) and contrast-enhanced US (CEUS) facilitate the prediction of positive axillary lymph nodes (ALNs) in breast cancer diagnosed as Breast Imaging Reporting
Externí odkaz:
https://doaj.org/article/16c7784e6f334eb7aea612fcbb16189a
Publikováno v:
Annals of Physics,468(2024)169741
This paper presents a nonperturbative method for solving eigenproblems. This method applies to almost all potentials and provides nonperturbative approximations for any energy level. The method converts an eigenproblem into a perturbation problem, ob
Externí odkaz:
http://arxiv.org/abs/2308.10996
It is revealed that there exist duality families of the KdV type equation. A duality family consists of an infinite number of generalized KdV (GKdV) equations. A duality transformation relates the GKdV equations in a duality family. Once a family mem
Externí odkaz:
http://arxiv.org/abs/2301.00030
Some probability distributions have moments, and some do not. For example, the normal distribution has power moments of arbitrary order, but the Cauchy distribution does not have power moments. In this paper, by analogy with the renormalization metho
Externí odkaz:
http://arxiv.org/abs/2205.09119
Publikováno v:
Chemical Physics 559 (2022) 11537
In this paper, we calculate the energy spectrum of interacting gases by converting the cluster expansion method in statistical mechanics into a method of solving energy eigenvalues. We obtain an explicit expression of the energy eigenvalue, by which
Externí odkaz:
http://arxiv.org/abs/2204.04205
Publikováno v:
In Annals of Physics November 2024 470
Publikováno v:
In Annals of Physics September 2024 468
Publikováno v:
Eur. Phys. J. Plus (2023) 138:847
We propose an approach for calculating one-loop effective actions and vacuum energies in quantum field theory. Spectral functions are functions defined by the eigenvalues of an operator. One-loop effective actions and vacuum energies in quantum field
Externí odkaz:
http://arxiv.org/abs/2202.04646
The aim of this paper is to construct a quantum effective action for gravitational fields by the effective potential method in quantum field theory. The minimum of the quantum effective action gives an equation of quantum fluctuations. We discuss the
Externí odkaz:
http://arxiv.org/abs/2201.10587
If we cannot obtain all terms of a series, or if we cannot sum up a series, we have to turn to the partial sum approximation which approximate a function by the first several terms of the series. However, the partial sum approximation often does not
Externí odkaz:
http://arxiv.org/abs/2109.03610