Results 81 to 90 of about 469,971 (293)

Fourier-transformed gauge theory models of three-dimensional topological orders with gapped boundaries

open access: yesSciPost Physics
In this paper, we apply the method of Fourier transform and basis rewriting developed in [H. Wang et al., J. High Energy Phys. 02, 030 (2020)] for the two-dimensional quantum double model of topological orders to the three-dimensional gauge theory model (
Siyuan Wang, Yanyan Chen, Hongyu Wang, Yuting Hu, Yidun Wan
doaj   +1 more source

Double Two-Dimensional Discrete Fast Fourier Transform for Determining of Geometrical Parameters of Fibers and Textiles

open access: yesFibers, 2013
We have developed a computing method to determine the geometrical parameters of fibers and the textile periodical structure. This method combines two two-dimensional discrete fast Fourier transforms to calculate a diffraction pattern from a diffraction ...
Oleg Kofnov, Pavel Shlyakhtenko
doaj   +1 more source

Two Dimensional Array Imaging with Beam Steered Data

open access: yes, 2013
This paper discusses different approaches used for millimeter wave imaging of two-dimensional objects. Imaging of a two dimensional object requires reflected wave data to be collected across two distinct dimensions.
Patole, Sujeet, Torlak, Murat
core   +1 more source

Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)

open access: yesAdvanced Functional Materials, EarlyView.
Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao   +5 more
wiley   +1 more source

Image Compression and Encryption Scheme Based on Compressive Sensing and Fourier Transform

open access: yesIEEE Access, 2020
An image compression and encryption scheme based on compressive sensing (CS) and Fourier transform is proposed to achieve image encryption and compression with reconstruction robustness and high security.
Miao Zhang   +6 more
doaj   +1 more source

Harmonic analysis on local fields and adelic spaces I

open access: yes, 2007
We develop a harmonic analysis on objects of some category $C_2$ of infinite-dimensional filtered vector spaces over a finite field. It includes two-dimensional local fields and adelic spaces of algebraic surfaces defined over a finite field.
Osipov, D. V., Parshin, A. N.
core   +4 more sources

Electroactive Metal–Organic Frameworks for Electrocatalysis

open access: yesAdvanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska   +7 more
wiley   +1 more source

Efficient computation for the eigenvalues and eigenfunctions of two-dimensional non-separable linear canonical transform

open access: yesResults in Applied Mathematics
The parameter matrix of the two-dimensional non-separable linear canonical transform (2D-NSLCT) determines its specific form and properties. Certain forms of the 2D-NSLCT are consistent with well-known transforms, such as two-dimensional non-separable ...
Yuru Tian, Feng Zhang
doaj   +1 more source

Geometric interpretations of the Discrete Fourier Transform (DFT) [PDF]

open access: yes
One, two, and three dimensional Discrete Fourier Transforms (DFT) and geometric interpretations of their periodicities are presented. These operators are examined for their relationship with the two sided, continuous Fourier transform.
Campbell, C. W.
core   +1 more source

Ewald methods for inverse power-law interactions in tridimensional and quasi-two dimensional systems

open access: yes, 2010
In this paper, we derive the Ewald method for inverse power-law interactions in quasi-two dimensional systems. The derivation is done by using two different analytical methods.
Allen M P   +8 more
core   +2 more sources

Home - About - Disclaimer - Privacy