Results 31 to 40 of about 6,856,362 (286)

Quantum Hamiltonian Reduction of the Schwinger Model [PDF]

open access: yes, 1994
We reexamine a unitary-transformation method of extracting a physical Hamiltonian from a gauge field theory after quantizing all degrees of freedom including redundant variables.
E. Langman   +23 more
core   +3 more sources

ShakerMaker: A framework that simplifies the simulation of seismic ground-motions

open access: yesSoftwareX, 2022
ShakerMaker is an open-source python framework which simplifies the generation of synthetic broad-band seismograms, produced by finite-fault kinematic representations of earthquake ruptures, using a 1-D layered model of the crust and the frequency ...
José A. Abell   +2 more
doaj   +1 more source

Improved method for phase wraps reduction in profilometry

open access: yes, 2016
In order to completely eliminate, or greatly reduce the number of phase wraps in 2D wrapped phase map, Gdeisat et al. proposed an algorithm, which uses shifting the spectrum towards the origin.
Du, Guangliang   +6 more
core   +1 more source

Adaptive multiscale model reduction with Generalized Multiscale Finite Element Methods [PDF]

open access: yes, 2016
In this paper, we discuss a general multiscale model reduction framework based on multiscale finite element methods. We give a brief overview of related multiscale methods. Due to page limitations, the overview focuses on a few related methods and is not
Chung, Eric   +2 more
core   +2 more sources

Reduction method for representations of queer Lie superalgebras

open access: yes, 2016
We develop a reduction procedure which provides an equivalence from an arbitrary block of the BGG category for the queer Lie superalgebra $\mathfrak{q}(n)$ to a "$\mathbb{Z}\pm s$-weights" ($s\in \mathbb{C}$) block of a BGG category for finite direct sum
Chen, Chih-Whi
core   +1 more source

Justification of the reduction method using the zero field method

open access: yesВісник Харківського національногоуніверситету імені В.Н. Каразіна. Серія: Радіофізика та електроніка, 2022
Relevance. The urgency of the task is due primarily to progress in the field of computer technology and the growth in the power of modern personal computers.
D. O. Batrakov
doaj   +1 more source

Iterative solution of elliptic equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2022
We reduce solution of the Dirichlet problem ($x \in D \subset R^m$) \[ \Delta u(x)+a(x)u(x)=f(x) \quad \mbox{in $D$}, \qquad u=0 \quad \mbox{on $\partial D$} \] to iterative solution of a simpler problem \[ \Delta u=f(x) \; \; \mbox{in $D$}, \; \; u=0
Philip Korman, Dieter Schmidt
doaj   +1 more source

Synchronized vector solutions for the nonlinear Hartree system with nonlocal interaction

open access: yesAdvanced Nonlinear Studies
We are concerned with the following nonlinear Hartree system−Δu+P1(|x|)u=α1|x|−1∗u2u+β|x|−1∗v2u inR3,−Δv+P2(|x|)v=α2|x|−1∗v2v+β|x|−1∗u2v inR3, $$\begin{cases}-{\Delta}u+{P}_{1}\left(\vert x\vert \right)u={\alpha }_{1}\left(\vert x{\vert }^{-1}\ast {u}^{2}
Gao Fashun, Yang Minbo, Zhao Shunneng
doaj   +1 more source

Size- and Shape-Dependent Antibacterial Studies of Silver Nanoparticles Synthesized by Wet Chemical Routes

open access: yesNanomaterials, 2016
Silver nanoparticles (AgNPs) of different shapes and sizes were prepared by solution-based chemical reduction routes. Silver nitrate was used as a precursor, tri-sodium citrate (TSC) and sodium borohydride as reducing agents, while polyvinylpyrrolidone ...
Muhammad Akram Raza   +5 more
doaj   +1 more source

Variance Reduction Result for a Projected Adaptive Biasing Force Method

open access: yes, 2017
This paper is committed to investigate an extension of the classical adaptive biasing force method, which is used to compute the free energy related to the Boltzmann-Gibbs measure and a reaction coordinate function.
E. Darve   +5 more
core   +1 more source

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