Results 261 to 270 of about 172,072 (313)
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On the Approximate Methods for Linear Optics of Liquid Crystals
Molecular Crystals and Liquid Crystals Incorporating Nonlinear Optics, 1990Abstract Several approximate methods have been proposed so far to treat electromagnetic wave propagation in stratified anisotropic media, such as liquid crystals or aperiodic structures. Despite the complete equivalence among many of them, however, a comparison between different results is often made difficult by the complexity of the adopted formalism.
ALLIA, PAOLO MARIA EUGENIO ICILIO +3 more
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Approximate Sampling Method for Locally Linear Embedding
2007 International Joint Conference on Neural Networks, 2007We deal with the nonlinear manifold learning problem to find a low-dimensional structure in high-dimensional data. Based on Gaussian random fields framework, we propose an approximate sampling method for coordinates on the manifolds. Experimentally the mean of samples are shown to be almost equal to the coordinates obtained by locally linear embedding ...
Hyun-Chul Kim +2 more
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A polynomial method of approximate centers for linear programming
Mathematical Programming, 1992The introduction and the last section illustrate clearly how this paper relates to the literature. The authors give a general picture of the stream of research that evolved from the publication of the Karmarkar method in 1984 and resulted in the development of a number of so-called interior point methods.
Kees Roos, Jean-Philippe Vial
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Approximation of Functions on the Sphere by Linear Methods
Ukrainian Mathematical Journal, 2015zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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On approximating periodic functions using linear approximation methods
Journal of Mathematical Sciences, 2007In the paper, a generalization of a known theorem by Hardy and Young is obtained; a formula interrelating the integral of a 2π-periodic function over the period with the integral over the entire axis is established; new approximation characteristics for functions belonging to saturation classes of continuity modules of different orders for the spaces ...
A. S. Zhuk, V. V. Zhuk
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Linear Algebra Methods in a Mixed Approximation of Magnetostatic Problems
SIAM Journal on Scientific Computing, 1999Summary: In the solution of magnetostatic problems the use of a mixed formulation based on both the magnetic and magnetic displacement fields is particularly appropriate as it allows us to impose the physical conditions exactly and to maintain the continuity properties of the two fields, together with an efficient treatment of boundary conditions.
Perugia I., Simoncini V., Arioli M.
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Linear method for the approximation of differentiable functions
Mathematical Notes of the Academy of Sciences of the USSR, 1970This article is devoted to the problem of the approximation of functions in the metric of space Lp(0, 1), the s-th derivative of the functions being continuous and the (s + l)-th derivative belonging to the space Lq(0, 1), with p, q ≥1, by spline functions of order s with fixed “almost” uniform nodes.
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A Method for Approximating Linear Controllers
IFAC Proceedings Volumes, 1987Abstract By introducing an approximation parameter k, a weighted consideration of the transmission zeros of a system can be obtained when applying “modal” order reduction methods, and thus an approximation of its closed-loop characteristics can be achieved.
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A method for approximation of a linear phase characteristic
Proceedings of the IEEE, 1971A method is presented for finding all-pole transfer functions that approximate a linear phase characteristic in such a way as to make the phase error equal to zero at the maximum possible number of points. The solution is obtained in the closed form.
B.D. Rakovich, B. Djurich
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A non-linear approximation method on the sphere
GEM - International Journal on Geomathematics, 2014zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Michel, Volker, Telschow, Roger
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