Results 11 to 20 of about 5,356,527 (332)
Optimal Bandwidth for High Efficiency Thermoelectrics
Physical Review Letters, 2011 The thermoelectric figure of merit (ZT) in narrow conduction bands of different material dimensionalities is investigated for different carrier scattering models. When the bandwidth is zero, the transport distribution function (TDF) is finite, not infinite as previously speculated by Mahan and Sofo [Proc. Natl. Acad. Sci. U.S.A.
Zhou, Jun +3 more
openaire +5 more sources
Time-optimal quantum transformations with bounded bandwidth [PDF]
Quantum, 2021 In this paper, we derive sharp lower bounds, also known as quantum speed limits, for the time it takes to transform a quantum system into a state such that an observable assumes its lowest average value.
Dan Allan +2 more
doaj +1 more source
Fault Detection Based on Multi-Dimensional KDE and Jensen–Shannon Divergence
Entropy, 2021 Weak fault signals, high coupling data, and unknown faults commonly exist in fault diagnosis systems, causing low detection and identification performance of fault diagnosis methods based on T2 statistics or cross entropy. This paper proposes a new fault
Juhui Wei +4 more
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Optimal transfer functions for bandwidth-limited imaging
Physical Review Research, 2022 One of the fundamental limits of classical optical microscopy is the diffraction limit of optical resolution. It results from the finite bandwidth of the optical transfer function (or OTF) of an optical microscope, which restricts the maximum spatial ...
Sjoerd Stallinga +3 more
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Optimal Bandwidth Selection Methods with Application to Wind Speed Distribution
Mathematics, 2023 Accurate estimation of the unknown probability density functions of critical variables, such as wind speed—which plays a pivotal role in harnessing clean energy—is essential for various scientific and practical applications.
Necla Gündüz, Şule Karakoç
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Data-Based Optimal Bandwidth for Kernel Density Estimation of Statistical Samples [PDF]
Communications in Theoretical Physics, 2018 It is a common practice to evaluate probability density function or matter spatial density function from statistical samples. Kernel density estimation is a frequently used method, but to select an optimal bandwidth of kernel estimation, which is ...
Zhen-Wei 振伟 Li 李, P. He 何
semanticscholar +1 more source
The Optimal Bandwidth Parameter Selection in GPH Estimation
Journal of Mathematics, 2021 In this paper, the optimal bandwidth parameter is investigated in the GPH algorithm. Firstly, combining with the stylized facts of financial time series, we generate long memory sequences by using the ARFIMA (1, d, 1) process.
Weijie Zhou +3 more
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Optimal Bandwidth Positions for a Terminal Embedded Antenna: Physical Bounds and Antenna Design
IEEE Transactions on Antennas and Propagation, 2020 This article considers a small embedded planar antenna in a square-shaped terminal of 25 cm2 at a frequency band near 900 MHz, intended for long-range communication.
B. Jonsson +3 more
semanticscholar +1 more source
Estimating Smoothness and Optimal Bandwidth for Probability Density Functions
Stats, 2022 The properties of non-parametric kernel estimators for probability density function from two special classes are investigated. Each class is parametrized with distribution smoothness parameter. One of the classes was introduced by Rosenblatt, another one
Dimitris N. Politis +2 more
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Asymptotics and optimal bandwidth for nonparametric estimation of density level sets [PDF]
Electronic Journal of Statistics, 2017 Bandwidth selection is crucial in the kernel estimation of density level sets. A risk based on the symmetric difference between the estimated and true level sets is usually used to measure their proximity.
Wanli Qiao
semanticscholar +1 more source