Results 31 to 40 of about 1,355,826 (333)

Signal-to-noise ratio of Gaussian-state ghost imaging

open access: yes, 2008
The signal-to-noise ratios (SNRs) of three Gaussian-state ghost imaging configurations--distinguished by the nature of their light sources--are derived. Two use classical-state light, specifically a joint signal-reference field state that has either the ...
B. E. A. Saleh   +4 more
core   +1 more source

Signal-to-noise ratio of the MEG signal after preprocessing [PDF]

open access: yes, 2014
Background Magnetoencephalography (MEG) provides a direct measure of brain activity with high combined spatiotemporal resolution. Preprocessing is necessary to reduce contributions from environmental interference and biological noise. New method The
Aurtenetxe, Sara   +5 more
core   +2 more sources

Observation of Stochastic Resonance in Percolative Josephson Media [PDF]

open access: yes, 2002
Measurements of the electrical response of granular Sn-Ge thin films below the superconducting transition temperature are reported. The addition of an external noise to the magnetic field applied to the sample is found to increase the sample voltage ...
A. G. Sivakov   +5 more
core   +2 more sources

Non orthogonal multiple access with wind energy harvesting

open access: yesAlexandria Engineering Journal, 2023
In this paper, we derive the performance of wireless communications using wind energy harvesting. We study the single-user and multi-user scenarios using Non Orthogonal and Orthogonal Multiple Access (NOMA and OMA).
Raed Alhamad, Hatem Boujemaa
doaj   +1 more source

Thermal infrared spectroscopy of Europa and Callisto [PDF]

open access: yes, 2000
The trailing hemispheres of Europa and Callisto were observed at 9–13 μm, and a spectrum of Europa with better spectral resolution and a better signal-to-noise ratio than was previously possible has been derived.
Brown, Michael E., Mills, Franklin P.
core   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

Enhancing qubit readout through dissipative sub-Poissonian dynamics

open access: yes, 2017
Single-shot qubit readout typically combines high readout contrast with long-lived readout signals, leading to large signal-to-noise ratios and high readout fidelities.
Coish, William A., D'Anjou, Benjamin
core   +1 more source

Detection of amplitude modulation with squeezed light for sensitivity beyond the shot-noise limit [PDF]

open access: yes, 1988
An improvement in precision beyond the limit set by the vacuum-state or zero-point fluctuations of the electromagnetic field is reported for the detection of amplitude modulation encoded on a weak signal beam. The improvement is achieved by employing the
Kimble, H. J., Wu, Ling-An, Xiao, Min
core   +1 more source

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

open access: yesFEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani   +4 more
wiley   +1 more source

Estimation of SNR Including Quantization Error of Multi-Wavelength Lidar Receiver

open access: yesAl-Khawarizmi Engineering Journal, 2013
This paper comprises the design and operation of mono-static backscatter lidar station based on a pulsed Nd: YAG laser that operates at multiple wavelengths.
Zena A. Abed, Muna M. Hummady
doaj   +2 more sources

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