Results 111 to 120 of about 11,364,385 (285)

The Phase Space Formulation of Time-Symmetric Quantum Mechanics

open access: yesQuanta, 2015
Time-symmetric quantum mechanics can be described in the Weyl–Wigner–Moyal phase space formalism by using the properties of the cross-terms appearing in the Wigner distribution of a sum of states.
Charlyne de Gosson, Maurice A. de Gosson
doaj   +1 more source

Direct observation of Cu in high-silica chabazite zeolite by electron ptychography using Wigner distribution deconvolution. [PDF]

open access: yesSci Rep, 2023
Mitsuishi K   +6 more
europepmc   +1 more source

Transport equations for the Wigner distribution function

open access: yes, 1979
Equations have been derived which describe the transport of the Wigner distribution function in homogeneous and inhomogeneous media. In a weakly inhomogeneous medium, the transport equation can be formulated in geometrical optical terms as follows: along
Bastiaans, M.J., Bastiaans, MJ Martin
core   +1 more source

Subregion‐specific perineuronal net remodelling in the dorsal hippocampus drives vulnerability and resilience to chronic stress: The role of venlafaxine treatment

open access: yesBritish Journal of Pharmacology, EarlyView.
Background and Purpose Neuronal plasticity enables the brain to adapt to internal and external demands by dynamically regulating synaptic connectivity and emotional circuitry. Impaired neuroplasticity represents a core pathophysiological framework of major depressive disorder, one of the leading causes of disability worldwide. Chronic stress is a major
Paola Brivio   +11 more
wiley   +1 more source

Wigner distribution of self-amplified spontaneous emission free-electron laser pulses and extracting its autocorrelation. [PDF]

open access: yesJ Synchrotron Radiat, 2021
Serkez S   +7 more
europepmc   +1 more source

Quark Wigner Distributions

open access: yes, 2011
4 pages, 1 figure; prepared for the workshop "XIX International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS 2011), April 11-15, 2011, Newport News, VA ...
Pasquini, B., Lorcé, C.
openaire   +2 more sources

Wave Tracing: Generalizing The Path Integral To Wave Optics

open access: yesComputer Graphics Forum, EarlyView.
Abstract Modeling the wave nature of light and the propagation and diffraction of electromagnetic fields is crucial for the accurate simulation of many phenomena, yet wave simulations are significantly more computationally complex than classical ray‐based models.
Shlomi Steinberg, Matt Pharr
wiley   +1 more source

Wigner-Ville distribution and cross Wigner-Ville distribution of noisy signals

open access: yesJournal of Systems Engineering and Electronics, 2008
Abstract The Wigner-Ville distribution (WVD) and the cross Wigner-Ville distribution (XWVD) have been shown to be efficient in the estimation of instantaneous frequency (IF). But the statistical result of the IF estimation from XWVD peak is much better than using WVD peak. The reason is given from a statistical point of view. Theoretical studies show
Chen Guanghua   +4 more
openaire   +1 more source

Signal reconstruction from discrete-time Wigner distribution

open access: yes, 2013
Wigner distribution is considered to be one of the most powerful tools for time-frequency analysis of rumvstationary signals. Wigner distribution is a bilinear signal transformation which provides two dimensional time-frequency characterization of one ...
Cheng, Siuling
core  

Modelling the time‐resolved modulations of cardiac activity in rats: A study on pharmacological autonomic stimulation

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Time‐resolved estimation of cardiac rhythmicity parameters. A pipeline is shown for the estimation of the fluctuating cardiac parameters, based on the Poincaré plot. The Poincaré plot illustrates the successive changes in interbeat intervals (IBI).
Diego Candia‐Rivera   +3 more
wiley   +1 more source

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