Results 11 to 20 of about 5,780,309 (303)

Using conditional kernel density estimation for wind power density forecasting [PDF]

open access: yes, 2012
Of the various renewable energy resources, wind power is widely recognized as one of the most promising. The management of wind farms and electricity systems can benefit greatly from the availability of estimates of the probability distribution of wind ...
Jeon, Jooyoung, Taylor, James
core   +4 more sources

Improving Results by Improving Densities: Density-Corrected Density Functional Theory

open access: yesJournal of the American Chemical Society, 2022
DFT calculations have become widespread in both chemistry and materials, because they usually provide useful accuracy at much lower computational cost than wavefunction-based methods. All practical DFT calculations require an approximation to the unknown exchange-correlation energy, which is then used self-consistently in the Kohn-Sham scheme to ...
Sim, Eunji   +3 more
openaire   +3 more sources

Improvement of Power Recovery by Applying a Multi-Pulse Electric Field in the Thermoelectric Cycle Power Generation Process with Pyroelectric Materials

open access: yesEnergies, 2023
Nanogenerator energy harvesting technologies that transform thermal energies into electricity may help address the growing need for green power. Therefore, this research aims to increase power generation by combining waste heat with pyroelectric ...
Buddhika Amila Kumara Sodige   +6 more
doaj   +1 more source

Current densities in density-functional theory [PDF]

open access: yesPhysical Review A, 2013
It is well known that any given density rho(x)can be realized by a determinantal wave function for N particles. The question addressed here is whether any given density rho(x) and current density j(x) can be simultaneously realized by a (finite kinetic energy) determinantal wave function.
Lieb, Elliott H., Schrader, Robert
openaire   +2 more sources

The Masquelet technique for septic arthritis of the small joint in the hands: Case reports

open access: yesTrauma Case Reports, 2020
Septic arthritis in distal interphalangeal (DIP) joints sometimes occurs in association with mucous cysts or after the surgical treatment of mallet fingers.
Taichi Saito   +10 more
doaj   +1 more source

The imprint of crustal density heterogeneities on regional seismic wave propagation [PDF]

open access: yes, 2016
Density heterogeneities are the source of mass transport in the Earth. However, the 3-D density structure remains poorly constrained because travel times of seismic waves are only weakly sensitive to density.
A. Fichtner   +7 more
core   +2 more sources

The number of circulating CD34-positive cells is an independent predictor of coronary artery calcification progression: Sub-analysis of a prospective multicenter study

open access: yesCardiology Journal, 2022
BACKGROUND: Decreases in circulating CD34-positive cells are associated with increases in cardiovascular events. We investigated the association between the number of CD34-positive cells and the progression of coronary artery calcification (CAC), a ...
Keishi Ichikawa   +7 more
doaj   +1 more source

Refinements of the Density and J-Density Topologies [PDF]

open access: yesProceedings of the American Mathematical Society, 1993
Given an arbitrary ideal J \mathcal {J} on the real numbers, two ...
Krzysztof Ciesielski, Lee Larson
openaire   +1 more source

Density-on-Density Regression

open access: yes, 2023
In this study, a density-on-density regression model is introduced, where the association between densities is elucidated via a warping function. The proposed model has the advantage of a being straightforward demonstration of how one density transforms into another.
Zhao, Yi   +4 more
openaire   +2 more sources

Global imaging of the Earth's deep interior: seismic constraints on (an)isotropy, density and attenuation [PDF]

open access: yes, 2013
Seismic tomography is the principal tool to probe the deep interior of the Earth. Models of seismic anisotropy induced by crystal alignment provide insight into the underlying convective motion, and variations of density allow us to discriminate between ...
Karato, S.-I.   +7 more
core   +1 more source

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