Results 31 to 40 of about 6,858,749 (300)

Investigation on carbon sequestration capacity of typical subtropical evergreen broad-leaved forest in Wuyi Mountain National Nature Reserve [PDF]

open access: yesE3S Web of Conferences, 2021
Three typical substropical evergreen broad-leaved forests (Castanopsis eyrei, Schima superba and Cyclobalanopsis glauca) in Wuyi Mountain National Nature Reserve of Jiangxi Province were selected to investigate its carbon sequestration capacity.
Zhang Qiugen   +3 more
doaj   +1 more source

Adaptive smoothing length method based on weighted average of neighboring particle density for SPH fluid simulation

open access: yesVirtual Reality & Intelligent Hardware, 2021
Background: In the smoothed particle hydrodynamics (SPH) fluid simulation method, thesmoothing length affects not only the process of neighbor search but also the calculation accuracy of the pressure solver. Therefore, it plays a crucial role in ensuring
Rongda Zeng   +4 more
doaj   +1 more source

Averaging of density kernel estimators

open access: yesStatistics & Probability Letters, 2020
Averaging provides an alternative to bandwidth selection for density kernel estimation. We propose a procedure to combine linearly several kernel estimators of a density obtained from different, possibly data-driven, bandwidths. The method relies on minimizing an easily tractable approximation of the integrated square error of the combination.
Chernova, O.   +2 more
openaire   +4 more sources

Fracture Load Prediction of Non-Linear Structural Steels through Calibration of the ASED Criterion

open access: yesMetals, 2023
In this work, the application of the Average Strain Energy Density (ASED) criterion for the estimation of failure loads in materials with nonlinear behavior containing U-shaped notches is presented.
Marcos Sánchez   +3 more
doaj   +1 more source

Analyzing the Advantage of Combination of Density Forecasts in Tehran Stock Exchange [PDF]

open access: yesInternational Journal of Industrial Electronics, Control and Optimization, 2021
Today, stock market plays a key role in the economy of any country and is considered as one of the growth indicators of any economy. Gaining the skills of gathering and analyzing data simultaneously, as well as using this knowledge in economic ...
S.Raheleh Shahrokhi   +2 more
doaj   +1 more source

Average density of states in disordered graphene systems [PDF]

open access: yesPhysical Review B, 2008
In this paper, the average density of states (ADOS) with a binary alloy disorder in disordered graphene systems are calculated based on the recursion method. We observe an obvious resonant peak caused by interactions with surrounding impurities and an anti-resonance dip in ADOS curves near the Dirac point.
Wu, Shangduan   +7 more
openaire   +4 more sources

A deep learning-based reconstruction model for 3D sound speed field combining underwater vertical information

open access: yesFrontiers in Marine Science
IntroductionThe sound speed in the ocean significantly influences the propagation characteristics of underwater acoustic signals. Rapid acquisition of underwater three-dimensional (3D) sound speed fields is essential for target detection, acoustic ...
Hongchen Li   +6 more
doaj   +1 more source

Vertical electron density profiles from digisonde ionograms. The average representative profile

open access: yesAnnals of Geophysics, 1996
Profile calculations from ionograms using the Huang-Reinisch technique arrive at a set of boundary values and coefficients that describe the profile.
B. W. Reinisch, X. Huang
doaj   +1 more source

Breast cancer risk factors and mammographic density among 12518 average-risk women in rural China

open access: yesBMC Cancer, 2023
Background Mammographic density (MD) is a strong risk factor for breast cancer. We aimed to evaluate the association between MD and breast cancer related risk factors among average-risk women in rural China.
Huijiao Yan   +7 more
doaj   +1 more source

Geometrically averaged density of states as a measure of localization [PDF]

open access: yesPhysical Review B, 2007
Motivated by current interest in disordered systems of interacting electrons, the effectiveness of the geometrically averaged density of states, $ρ_g(ω)$, as an order parameter for the Anderson transition is examined. In the context of finite-size systems we examine complications which arise from finite energy resolution.
Song, Yun, Atkinson, W. A., Wortis, R.
openaire   +2 more sources

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