Results 291 to 300 of about 998,628 (342)
Some of the next articles are maybe not open access.
Neighborhoods of Harmonic and Stable Harmonic Mappings
Bulletin of the Malaysian Mathematical Sciences SocietyzbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bappaditya Bhowmik, Santana Majee
openaire +1 more source
Quasi-Phase-Matched Second Harmonic Generation: Tuning and Tolerances
IEEE Journal of Quantum Electronics, 1992The theory of quasi-phase-matched second-harmonic generation is presented in both the space domain and the wave vector mismatch domain. Departures from ideal quasi-phase matching in periodicity, wavelength, angle of propagation, and temperature are ...
M. Fejer, G. A. Magel, D. Jundt, R. Byer
semanticscholar +1 more source
Harmonic maps and harmonic morphisms
Journal of Mathematical Sciences, 1999zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +1 more source
IEEE Transactions on Industrial Informatics, 2019
Winding currents contain lots of harmonics if motors rotate at a high speed. This paper addresses two key challenges on the harmonic suppression: 1) using the multiple synchronous rotating frame transformations (MSRFTs) to get the primary signals, and 2)
Gang Liu +3 more
semanticscholar +1 more source
Winding currents contain lots of harmonics if motors rotate at a high speed. This paper addresses two key challenges on the harmonic suppression: 1) using the multiple synchronous rotating frame transformations (MSRFTs) to get the primary signals, and 2)
Gang Liu +3 more
semanticscholar +1 more source
2004 IEEE Electro/Information Technology Conference, 2004
This paper describes a method of calculating the transforms, currently obtained via Fourier and reverse Fourier transforms. The method allows calculating efficiently the transforms of a signal having an arbitrary dimension of the digital representation ...
Vladimir I. Clue
semanticscholar +1 more source
This paper describes a method of calculating the transforms, currently obtained via Fourier and reverse Fourier transforms. The method allows calculating efficiently the transforms of a signal having an arbitrary dimension of the digital representation ...
Vladimir I. Clue
semanticscholar +1 more source
2010
Chapter 5 reports the results of testing the proposed prodedures for harmonizing estimates of indicators for six of the seven essential features of forest biodiversity. Twenty indicators were tested using data from the common database. In general, positive results were obtained for forest categories, forest structure, forest age, deadwood, and ...
Chirici, Gherardo +10 more
openaire +5 more sources
Chapter 5 reports the results of testing the proposed prodedures for harmonizing estimates of indicators for six of the seven essential features of forest biodiversity. Twenty indicators were tested using data from the common database. In general, positive results were obtained for forest categories, forest structure, forest age, deadwood, and ...
Chirici, Gherardo +10 more
openaire +5 more sources
Harmonizing the Harmonized System
SSRN Electronic Journal, 2022Piotr Lukaszuk, David Torun
openaire +1 more source
ACM Transactions on Graphics, 2019
We introduce the notion of harmonic triangulations: a harmonic triangulation simultaneously minimizes the Dirichlet energy of all piecewise linear functions. By a famous result of Rippa, Delaunay triangulations are the harmonic triangulations of planar point sets. We prove by explicit counterexample that in 3D a harmonic triangulation does not exist in
openaire +1 more source
We introduce the notion of harmonic triangulations: a harmonic triangulation simultaneously minimizes the Dirichlet energy of all piecewise linear functions. By a famous result of Rippa, Delaunay triangulations are the harmonic triangulations of planar point sets. We prove by explicit counterexample that in 3D a harmonic triangulation does not exist in
openaire +1 more source
The Mathematical Gazette, 1935
The following notes are the outcome of a course of lectures to pupils on invariants. The methods are new to me, but I publish them with hesitation and apologise beforehand should they prove well known.
openaire +1 more source
The following notes are the outcome of a course of lectures to pupils on invariants. The methods are new to me, but I publish them with hesitation and apologise beforehand should they prove well known.
openaire +1 more source
ICASSP '83. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005
This paper reviews methods for obtaining short time spectral estimates for sine waves in noise. In the presence of noise, autoregressive methods have well-known difficulties[1,2], while iterations based upon Pisarenko's harmonic retrieval method perform quite well.
openaire +2 more sources
This paper reviews methods for obtaining short time spectral estimates for sine waves in noise. In the presence of noise, autoregressive methods have well-known difficulties[1,2], while iterations based upon Pisarenko's harmonic retrieval method perform quite well.
openaire +2 more sources