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Optimum Description of Yarn Axis Geomery in Woven Composites
effect reduction, due by incorrect sampling, is shown.The DFT can be also used Transform (DFT) appears as the best suitable one. It respects yarn (quasi)periodicity DFT can be applied at least in two ways for quas...
JI - Kompositní materiály
- 2005 •
- D
Rok uplatnění
D - Stať ve sborníku
Efficient Automated Approximation of Real Yarn Axis Using Discrete Fourier Transform
effect of DFT, was demontrated and effective method for its reduction was showThe Disrete Fourier Transform (DFT) is used for optimum mathematical description or approximation of yarn longitudinal axis, since the ...
JI - Kompositní materiály
- 2004 •
- D
Rok uplatnění
D - Stať ve sborníku
The Causes of Leakage Deviations from Sinc Function in DFT and Ways to Minimize Them
of discrete Fourier transform (DFT) spectra leakage for the incoherent real sinusoidal this phenomenon by a new form of DFT spectrum expression. It consists mainly of the spectrum formed by the sampling effect are added as...
Electrical and electronic engineering
- 2020 •
- JSC •
- Link
Rok uplatnění
JSC - Článek v periodiku v databázi SCOPUS
Výsledek na webu
To the Uncertainty of DFT-Based DSP Algorithms Used for Processing Multifrequency Signals
The paper analyses effect of window side-lobes of nearby harmonic signals on the result of calculating multifrequency signal parameters based on DFT. Two methods of estimating RMS value are analyzed, but the described principle is a...
JA - Elektronika a optoelektronika, elektrotechnika
- 2007 •
- D
Rok uplatnění
D - Stať ve sborníku
A closed local-orbital unified description of DFT and many-body effects
Density functional theory (DFT) is usually formulated in terms of the electron of DFT in terms of the orbital occupation numbers {nα} associated with a local-orbital orthonormal basis set {ϕα}. First, we discuss how the building blo...
Condensed matter physics (including formerly solid state physics, supercond.)
- 2022 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Effect of (Cd, Al) Co-doping and hydrogenation on the long-range ferromagnetic ordering of ZnO: Experimental and DFT studies
The nanopowders of ZnO coded Al and Cd were synthesized by thermal decomposition and were characterized by XRD. The measured optical properties point to a band gap of 3.23-3.12eV. By the hydrogenation of ZnO, we were able to stabilize the magnifying ...
Condensed matter physics (including formerly solid state physics, supercond.)
- 2018 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Effect of the trimethylsilyl substituent on the reactivity of permethyltitanocene
Effect of the trimethylsilyl substituent on the reactivity of permethyltitanocene...
CA - Anorganická chemie
- 2007 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Density Functional Study of Chemical Reaction Equilibrium for Dimerization Reactions in Slit and Cylindrical Nanopores
theory (DFT) to investigate the effects of temperature, pore geometry, bulk pressureWe present a theoretical study of the effects of confinement on chemical nanopores in equilibrium with a vapor reservoir. In addition to t...
CF - Fyzikální chemie a teoretická chemie
- 2009 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
The Influence of Window Sidelobes on DFT-based Multifreqency Signal Measurement
spectrum. This paper analyses the effect of window spectrum sidelobes on the evaluation of multifrequency signal RMS value estimated by two DFT-based techniques (the "mainlobe method" and RMS value estimation using interpolated
JA - Elektronika a optoelektronika, elektrotechnika
- 2010 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Vibrational dynamics of small molecules adsorbed on cation sites in zeolite channel systems: IR and DFT investigation
with the zeolite are considered. These effects, which can be classified as the effect from the bottom and the effect from the top, respectively, are critically analyzed......
CF - Fyzikální chemie a teoretická chemie
- 2008 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
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