Results 51 to 60 of about 3,466,261 (377)

Compressive Fourier Transform Spectroscopy

, 2010
We describe an approach based on compressive-sampling which allows for a considerable reduction in the acquisition time in Fourier-transform spectroscopy.
Katz, Ori, Levitt, Jonathan M., Silberberg, Yaron   +2 more
core   +1 more source

Relating the Lorentzian and exponential: Fermi's approximation,the Fourier transform and causality [PDF]

, 2002
The Fourier transform is often used to connect the Lorentzian energy distribution for resonance scattering to the exponential time dependence for decaying states.
A. Bohm, A. Bohm, A. Bohm, A. Bohm, A. Bohm, Arno R. Bohm, C.F. Bharucha, C.W. Oates, E. Fermi, E. Roberts, E.P. Wigner, G. Gamow, G.C. Hegerfeldt, G.W. King, H. Jakobvits, H. Primakoff, H. Walther, H.W. Atherton, J.P. Antoine, J.P. Antoine, L. Fonda, L.A. Khalfin, L.A. Khalfin, M. Gadella, M. Levy, M.H. Stone, N. L. Harshman, O. Civitarese, R.P. Feynman, S.R. Wilkinson, U. Volz, V. Weisskopf, V. Weisskopf   +32 more
core   +2 more sources

Nonlinear Fourier Transform for Optical Data Processing and Transmission: Advances and Perspectives

European Conference on Optical Communication, 2017
The nonlinear Fourier transform is a transmission and signal processing technique that makes positive use of the Kerr nonlinearity in optical fibre channels. I will overview recent advances and some of challenges in this field.
S. Turitsyn
semanticscholar   +1 more source

On the Graph Fourier Transform for Directed Graphs [PDF]

IEEE Journal on Selected Topics in Signal Processing, 2016
The analysis of signals defined over a graph is relevant in many applications, such as social and economic networks, big data or biological networks, and so on.
S. Sardellitti, S. Barbarossa, P. Lorenzo   +2 more
semanticscholar   +1 more source

Separation of Variables and the Computation of Fourier Transforms on Finite Groups, II [PDF]

, 2015
We present a general diagrammatic approach to the construction of efficient algorithms for computing the Fourier transform of a function on a finite group.
Maslen, David, Rockmore, Daniel N., Wolff, Sarah   +2 more
core   +3 more sources

EXTENSION OF SOME INTEGRAL TRANSFORM BY THE METHOD OF MULTIPLE INTEGRALS [PDF]

Journal of Mechanics of Continua and Mathematical Sciences
Extension of some Integral Transform by the Method of Multiple Integrals by Lebesgue measurable and Lebesgue integrable.
https://jmcms.s3.amazonaws.com/wp-content/uploads/2024/08/24063139/jmcms-2408029-Extension-of-some-Integral-Transform-DG-DS-YJ-1.pdf, D. S. Singh, Yashawant Jaiswal3   +2 more
doaj   +1 more source

Steerable Discrete Fourier Transform

, 2017
Directional transforms have recently raised a lot of interest thanks to their numerous applications in signal compression and analysis. In this letter, we introduce a generalization of the discrete Fourier transform, called steerable DFT (SDFT).
Fracastoro, Giulia, Magli, Enrico
core   +1 more source

Sharp rate of average decay of the Fourier transform of a bounded set [PDF]

, 2003
We prove that the spherical mean of the Fourier transform of the characteristic function of a bounded convex set (without any additional assumptions) or a bounded set with a C^{3/2} boundary decays at infinity at the same rate as the Fourier transform of
Brandolini, L., Hofmann, S., Iosevich, A.   +2 more
core   +5 more sources

Fourier-Mukai transforms [PDF]

, 2007
Suggestions by many people incorporated (see the acknowledgement at the end of the introduction)
Hille, Lutz, Bergh, Michel Van den
openaire   +2 more sources

Fourier-Transform Infrared Spectral Library of MXenes

Chemistry of Materials
Fourier-transform infrared (FTIR) spectroscopy characterization is a powerful and easy-to-use technique frequently employed for the characterization and fingerprinting of materials.
Tetiana Parker, Danzhen Zhang, D. Bugallo, Kateryna Shevchuk, Marley Downes, Geetha Valurouthu, Alex Inman, Benjamin Chacon, Teng Zhang, C. Shuck, Yong-Jie Hu, Y. Gogotsi   +11 more
semanticscholar   +1 more source