Results 161 to 170 of about 91,861 (215)

Detection of fractured zones, faults, and cavities by high resolution muon tomography in the Buda Hills. [PDF]

Sci Rep
Balázs L, Hamar G, Csicsek Á, Surányi G, Varga D.   +4 more
europepmc   +1 more source

Plasmon mode engineering with electrons on helium. [PDF]

Nat Commun
Mikolas CA, Beysengulov NR, Schleusner AJ, Rees DG, Undershute C, Pollanen J.   +5 more
europepmc   +1 more source

Contrast Analysis on Spin Transport of Multi-Periodic Exotic States in the XXZ Chain. [PDF]

Entropy (Basel)
Jiang S, Liu J, Li Y.
europepmc   +1 more source

Analytic Solutions and Entropy Production of the Double-Diffusive Equation System. [PDF]

Entropy (Basel)
Barna IF, Mátyás L.
europepmc   +1 more source

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Affine Wigner distributions

[Proceedings] ICASSP-92: 1992 IEEE International Conference on Acoustics, Speech, and Signal Processing, 1992
A symmetrized version of the wideband ambiguity function is proposed, by observing the relationship between ambiguity functions and the theory of certain groups. Its 2-D Fourier transform has properties similar to the Wigner distribution, and it is called the affine Wigner distribution, by analogy.
R.G. Shenoy, T.W. Parks
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Wigner distribution for random systems

Journal of Modern Optics, 2002
We use the Wigner distribution to study systems subjected to random forces. We define the instantaneous spectrum as the ensemble average of the Wigner distribution, and we write the differential equation whose solution gives us the time-varying spectrum of the state variable. We consider the cases of both constant and time-varying coefficients.
GALLEANI, Lorenzo, COHEN L.
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Dynamics using the Wigner distribution

Proceedings 15th International Conference on Pattern Recognition. ICPR-2000, 2002
A new method is described to study dynamical systems characterized by linear ordinary differential equations. The method is aimed at studying the time-varying properties of the resulting solution of the differential equation. In contrast to the standard methods where one solves the differential equation and then uses a time-frequency distribution, for ...
GALLEANI, Lorenzo, COHEN L.
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Wigner Distribution Functions

2002
A popular method to include quantum effects into the calculation of the characteristics of submicron devices is based on the Wigner functions. The underlying idea is that quantum transport can be catched into generalized transport equations that are in the spirit of the Boltzmann transport equation, suitable extended with terms that represent quantum ...
Wim Magnus, Wim Schoenmaker
openaire   +1 more source