Results 21 to 30 of about 1,379,599 (244)

Proper generalized decomposition of time-multiscale models [PDF]

open access: yes, 2011
Models encountered in computational mechanics could involve many time scales. When these time scales cannot be separated, one must solve the evolution model in the entire time interval by using the finest time step that the model implies.
CHINESTA SORIA, Francisco   +8 more
core   +1 more source

Study on Spectral Interference in the Determination of Vanadium by ICP-OES

open access: yes, 2020
Vanadium is an important scarce resource and strategic metal, and often coexists with a variety of complex metals in the form of secondary mineral phases in nature.
Zhang Yi   +7 more
core   +1 more source

Ridge-type spectral decomposition estimators in mixed effects models with stochastic restrictions

open access: yes上海师范大学学报. 自然科学版, 2016
This paper proposes a new estimation of fixed effects in linear mixed models with stochastic restrictions,which is called a conditional ridge-type spectral decomposition estimator.Using the mean squared error matrix and generalized mean squared error as ...
ZHENG Lu, YUE Rongxian, CHENG Jing
doaj   +1 more source

A LIBS Spectral Self-Absorption Correction Method Using Voigt Profile Fitting for the Application of Magnesium Analysis in Phosphorus Ore

open access: yes, 2020
The concentration of MgO is one of the most important parameters in the phosphate ore flotation. The fast detection of the concentration of MgO has great significance for the optimization of the flotation, the improvement of the efficiency and the ...
Sun Lan-xiang   +4 more
core   +1 more source

A flexible spectral modification method based on temporal decomposition and Gaussian mixture model [PDF]

open access: yes, 2009
Manipulating spectral structure often leads to degradation of speech quality, which is mainly due to insufficient smoothness of the modified spectra between frames, and ineffective spectralmodification.
Masato Akagi   +3 more
core   +1 more source

Mapping litter decomposition by remote-detected indicators

open access: yesAnnals of Geophysics, 2006
Leaf litter decomposition is a key process for the functioning of natural ecosystems. An important limiting factor for this process is detritus availability, which we have estimated by remote sensed indices of canopy green biomass (NDVI).
L. Rossi   +7 more
doaj   +1 more source

Hyperspectral Compressive Image Reconstruction With Deep Tucker Decomposition and Spatial–Spectral Learning Network

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
Hyperspectral compressive imaging has taken advantage of compressive sensing theory to capture spectral information of the dynamic world in recent decades of years, where an optical encoder is employed to compress high dimensional signals into a single 2-
Hao Xiang   +6 more
doaj   +1 more source

Proper Generalized Decomposition method for incompressible Navier–Stokes equations with a spectral discretization [PDF]

open access: yes, 2013
http://dx.doi.org/10.1016/j.amc.2013.02.022Proper Generalized Decomposition (PGD) is a method which consists in looking for the solution to a problem in a separate form.
ALLERY, Cyrille   +2 more
core   +1 more source

Spectral Analysis of Fluoride and Nitride Phase in Secondary Aluminum Dross

open access: yes, 2022
Secondary aluminum dross (SAD) is a hazardous waste produced in the electrolytic aluminum, aluminum processing, and aluminum recycling industries. The SAD produced from different processes has the characteristics of complex mineral phases and large ...
Li Shao-peng   +5 more
core   +1 more source

Introduction of sensor spectral response into image fusion methods. Application to wavelet-based methods [PDF]

open access: yes, 2005
Usual image fusion methods inject features from a high spatial resolution panchromatic sensor into every low spatial resolution multispectral band trying to preserve spectral signatures and improve spatial resolution to that of the panchromatic sensor ...
Fors Aldrich, Octavi   +7 more
core   +1 more source

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