Results 11 to 20 of about 1,882,584 (263)

Water Quality Evaluation of Wenyu River in Beijing by Matter Element Model [PDF]

open access: yesNature Environment and Pollution Technology, 2021
River water quality is an important indicator for identifying river changes and analyzing river health, and has an important impact on the ecological environment of the river basin.
Ren Shuangqing, Men Baohui and Shen Yaoduo
doaj   +1 more source

Technical note: Multiple wavelet coherence for untangling scale-specific and localized multivariate relationships in geosciences [PDF]

open access: yesHydrology and Earth System Sciences, 2016
The scale-specific and localized bivariate relationships in geosciences can be revealed using bivariate wavelet coherence. The objective of this study was to develop a multiple wavelet coherence method for examining scale-specific and localized ...
W. Hu, B. C. Si
doaj   +1 more source

Variable Scale Aperture Sampling Reception Method for Multiple Orbital Angular Momentum Modes Vortex Wave

open access: yesIEEE Access, 2019
In this paper, we propose a kind of variable scale aperture sampling reception (VSASR) method for multiple orbital angular momentum (OAM) modes vortex wave reception and demodulation.
Qiang Feng, Jun Liang, Long Li
doaj   +1 more source

Multi-Scale Ensemble Learning for Thermal Image Enhancement

open access: yesApplied Sciences, 2021
In this study, we propose a multi-scale ensemble learning method for thermal image enhancement in different image scale conditions based on convolutional neural networks.
Yuseok Ban, Kyungjae Lee
doaj   +1 more source

An Unsupervised Detection Method for Multiple Abnormal Wi-Fi Access Points in Large-Scale Wireless Network

open access: yesApplied Artificial Intelligence, 2022
The probability of a single access point (AP) failure is very small. In addition, APs communicate with each other; therefore, it is considered that these failures have little impact on the wireless network.
Song Chen, Hai Liao
doaj   +1 more source

Research on Scattering Feature Extraction of Underwater Moving Cluster Targets Based on the Highlight Model [PDF]

open access: yesArchives of Acoustics, 2023
In detecting cluster targets in ports or near-shore waters, the echo amplitude is seriously disturbed by interface reverberation, which leads to the distortion of the traditional target intensity characteristics, and the appearance of multiple targets in
Yang Yang, Jun Fan, Bin Wang
doaj   +1 more source

Analysing and correcting the differences between multi-source and multi-scale spatial remote sensing observations. [PDF]

open access: yesPLoS ONE, 2014
Differences exist among analysis results of agriculture monitoring and crop production based on remote sensing observations, which are obtained at different spatial scales from multiple remote sensors in same time period, and processed by same algorithms,
Yingying Dong   +6 more
doaj   +1 more source

A note on the method of multiple scales [PDF]

open access: yesQuarterly of Applied Mathematics, 1980
A modification of the method of multiple scales makes use of the expansion of parameters of the system in order to remove undesirable characteristics of the solution obtained by the usual multiple-scale method. When applied to the damped harmonic oscillator, the modification leads to the exact solution.
openaire   +1 more source

Dynamical properties of the growing continuum using multiple-scale method [PDF]

open access: yesApplied and Computational Mechanics, 2008
The theory of growth and remodeling is applied to the 1D continuum. This can be mentioned e.g. as a model of the muscle fibre or piezo-electric stack. Hyperelastic material described by free energy potential suggested by Fung is used whereas the change ...
Hynčík L., Rosenberg J.
doaj  

Nonlinear Vibration Analysis of a Beam with a Breathing Crack

open access: yesApplied Sciences, 2019
The phenomena of sub- and super-harmonic responses make up one of the prominent nonlinear characteristics of a beam with a breathing crack. In order to fully understand the behaviors of sub- and super-harmonic resonances, it is necessary to analyze the ...
Hui Long, Yilun Liu, Kefu Liu
doaj   +1 more source

Home - About - Disclaimer - Privacy