Results 251 to 260 of about 1,181,842 (294)

Analytical calculation of permanent magnet couplings

IEEE Transactions on Magnetics, 1993
An analytical method adapted to calculating the forces between permanent magnets is developed, and applied to the torque calculation of synchronous couplings. The method is based on the forces exerted between two elementary barshaped magnets. The curvature effect is taken into account by a corrective coefficient, and the yokes by magnetic images.
J.P. YONNET, S. HEMMERLIN, E. RULLIERE, G. LEMARQUAND   +3 more
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Analytical SER Calculation of Spatial Modulation

2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications, 2008
Spatial modulation (SM) is a multiple antenna trans- mission approach that exploits the location of the transmitting antenna for conveying data information. In SM, only a single transmit antenna transmits at a time while all other antennas remain silent.
Mesleh, Raed, Engelken, Sonke, Sinanovic, Sinan, Haas, Harald   +3 more
openaire   +2 more sources

Analytical calculation of two-dimensional spectra

Optics Letters, 2015
We demonstrate an analytical calculation of two-dimensional (2D) coherent spectra of electronic or vibrational resonances. Starting with the solution to the optical Bloch equations for a two-level system in the 2D time domain, we show that a fully analytical 2D Fourier transform can be performed if the projection-slice and Fourier-shift theorems of ...
Joshua D, Bell, Rebecca, Conrad, Mark E, Siemens   +2 more
openaire   +2 more sources

On Calculating Analytic Centers

1989
Abstract : The analytic center of a polytope can be calculated in polynomial time by Newton's method. This note was motivated by papers of Renegar and Shub(88) and by Ye(89). We apply Smale's(86) estimates at one point for Newton's method to the problem of finding the analytic center of a polytope. The method converges globally in the appropriate norm.
openaire   +3 more sources

Analytical Calculation Methods

2010
Although numerical calculation methods for solving Laplace’s equation have developed remarkably in the past few decades, analytical methods still have significance in obtaining precise values and in easily evaluating parameter dependence, for example.
Tadasu Takuma, Boonchai Techaumnat
openaire   +1 more source

A practical analytic method for calculating $\pi (x)$

Mathematics of Computation, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jens Franke, Thorsten Kleinjung, Jan Büthe, Alexander Jost   +3 more
openaire   +2 more sources

Analytical Forces for the Optimized Effective Potential Calculations

Journal of Chemical Theory and Computation, 2023
The optimized effective potential (OEP) equation is an ill-conditioned linear system when using finite basis sets. Without any special treatment, the obtained exchange-correlation (XC) potential may have unphysical oscillations. One way to alleviate this problem is to regularize the solutions; however, a regularized XC potential is not the exact ...
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Calculation of the OTF: Analytical Methods

2017
The specific calculation required for the analytical determination of the OTF depends on a number of factors. First, the choice depends on whether the calculation is (1) a purely theoretical one for a hypothetical optical system having a given kind and amount of aberration, (2) an anticipated evaluation from system design data for optics in the design ...
Charles S. Williams, Orville A. Becklund
openaire   +1 more source

Directed waves in random media: An analytical calculation

Physical Review E, 1994
The propagation of directed scalar waves in D+1 dimensions in a strongly disordered medium is studied. We use the model first proposed by Saul, Kardar, and Read [Phys. Rev. A 45, 8859 (1992)], where unitarity is guaranteed in each step. The beam positions 〈${\mathbf{x}}^{2}$\ifmmode\bar\else\textasciimacron\fi{}〉 and 〈x${\mathrm{\ifmmode\bar\else ...
, Friedberg, , Yu
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Analytical molecular surface calculation

Journal of Applied Crystallography, 1983
A computer algorithm is presented for calculating the part of the van der Waals surface of molecule that is accessible to solvent. The solvent molecule is modeled by a sphere. This sphere is, in effect, rolled over the molecule to generate a smooth outer-surface contour.
openaire   +1 more source