Results 41 to 50 of about 25,686,348 (370)

EXAMINATION OF SPECTRAL TRANSFORMATIONS ON SPECTRAL MIXTURE ANALYSIS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
While many spectral transformation techniques have been applied on spectral mixture analysis (SMA), few study examined their necessity and applicability.
Y. Deng, C. Wu
doaj   +1 more source

The stability of bifurcating solutions for a prey-predator model with population flux by attractive transition

open access: yesAIMS Mathematics, 2021
This paper investigates the stability of bifurcating solutions for a prey-predator model with population flux by attractive transition. Applying spectral analysis and the principle of exchange of stability, we obtain that the bifurcating solutions are ...
Qian Xu, Chunfeng Xing
doaj   +1 more source

Advanced Modelling of Soil Organic Carbon Content in Coal Mining Areas Using Integrated Spectral Analysis: A Dengcao Coal Mine Case Study

open access: yesInternational Journal of Innovative Science and Research Technology
Effective modelling and integrated spectral analysis approaches can advance modelling precision. To develop an integrated spectral forecast modelling of soil organic carbon (SOC), this research investigated a mining coal in Dengcao Coal Mine Area ...
Gill Ammara, Xiaojun Nie, Chang -hua LIU
semanticscholar   +1 more source

Grey Wolf Optimizer for Variable Selection in Quantification of Quaternary Edible Blend Oil by Ultraviolet-Visible Spectroscopy

open access: yesMolecules, 2022
A novel swarm intelligence algorithm, discretized grey wolf optimizer (GWO), was introduced as a variable selection tool in edible blend oil analysis for the first time.
Rongling Zhang   +5 more
doaj   +1 more source

Fast Spectral Clustering for Unsupervised Hyperspectral Image Classification

open access: yesRemote Sensing, 2019
Hyperspectral image classification is a challenging and significant domain in the field of remote sensing with numerous applications in agriculture, environmental science, mineralogy, and surveillance.
Yang Zhao, Yuan Yuan, Qi Wang
doaj   +1 more source

Spectral Analysis of Percolation Hamiltonians

open access: yes, 2004
We study the family of Hamiltonians which corresponds to the adjacency operators on a percolation graph. We characterise the set of energies which are almost surely eigenvalues with finitely supported eigenfunctions.
Adachi   +22 more
core   +4 more sources

Visual Analysis of Carbendazim Residues in Carrot Tubers via Postionization Mass Spectrometry Imaging

open access: yesApplied Sciences
Carbendazim (CBZ) residues in food are a severe threat to food safety, and their detection is a challenging problem in food science. We introduce here a new method based on laser desorption postionization mass spectrometry imaging (LDPI-MSI) for ...
Tianyu Wang, He Zhang, Yongjun Hu
doaj   +1 more source

Spectral mixture analysis of EELS spectrum-images [PDF]

open access: yes, 2012
Recent advances in detectors and computer science have enabled the acquisition and the processing of multidimensional datasets, in particular in the field of spectral imaging.
Brun, Nathalie, Dobigeon, Nicolas
core   +3 more sources

Discriminant analysis of concentrations of trace elements in Ulaanbaatar soil

open access: yesProceedings of the Mongolian Academy of Sciences
In this work we investigated, through discriminant analysis, the spatial variability and pollution sources of potential toxic elements in Ulaanbaatar surface soil.
Byambasuren Tsagaan   +2 more
doaj   +1 more source

Quantitative characterization of surface topography using spectral analysis [PDF]

open access: yes, 2016
Roughness determines many functional properties of surfaces, such as adhesion, friction, and (thermal and electrical) contact conductance. Recent analytical models and simulations enable quantitative prediction of these properties from knowledge of the ...
T. Jacobs, Till Junge, L. Pastewka
semanticscholar   +1 more source

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