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1.
Advances in Computational Mathematics - Persistence diagrams are one of the main tools in the field of Topological Data Analysis (TDA). They contain fruitful information about the shape of data.... 相似文献
2.
JETP Letters - At the resonant passage of a plane elastic shear wave through an acoustically continuous heterostructure consisting of magnetic and nonmagnetic layers in a symmetric nonmagnetic... 相似文献
3.
A. K. Sukhorukova A. P. Sukhorukov 《Bulletin of the Russian Academy of Sciences: Physics》2011,75(12):1626-1628
Trapping the inclined beam in a surface wave with a powerful reference beam at another frequency in defocusing media with
cubic or cascade quadratic nonlinearity is investigated for the first time. The results from numerical simulations of the
dynamics of flat and cylindrical surface wave formation are presented. Gaussian, Hyper-Gaussian, slit, and tube reference
beams are considered. 相似文献
4.
Jean-Pierre Crouzeix Nadezda Sukhorukova Julien Ugon 《Journal of Optimization Theory and Applications》2017,172(3):950-964
In this paper, we derive a necessary condition for a best approximation by piecewise polynomial functions of varying degree from one interval to another. Based on these results, we obtain a characterization theorem for the polynomial splines with fixed tails, that is the value of the spline is fixed in one or more knots (external or internal). We apply nonsmooth nonconvex analysis to obtain this result, which is also a necessary and sufficient condition for inf-stationarity in the sense of Demyanov–Rubinov. This paper is an extension of a paper where similar conditions were obtained for free tails splines. The main results of this paper are essential for the development of a Remez-type algorithm for free knot spline approximation. 相似文献
5.
A. M. Ar'ev K. A. Kornev V. V. Merzlyakov A. P. Grekov S. M. Olesnevich S. A. Sukhorukova A. V. Sotnikov A. V. Chebanov G. G. Granatov 《Mechanics of Composite Materials》1968,4(4-6):904-907
The structure and properties of polycaproamide obtained in the presence of benzhydrazide have been studied. They are shown to depend on the duration of application of pressure in the mold. Under tensile deformation a transition from hexagonal to monoclinic polycaproamide takes place in the neck.Lugansk Machine-Building Institute. Institute of the Chemistry of High-Molecular Compounds, As UkrSSR, Kiev. Translated from Mekhanika Polimerov, Vol. 4, No. 6, pp. 1125–1127, November–December, 1968. 相似文献
6.
The reflection, refraction, and penetration of a signal optical pulse upon interaction with a pumping-induced moving lattice in media with cubic nonlinearity has been investigated. Numerical simulation is performed for different lattices and signal pulses. 相似文献
7.
A. K. Sukhorukova A. P. Sukhorukov 《Bulletin of the Russian Academy of Sciences: Physics》2009,73(12):1557-1561
The results of simulation of the interaction of optical beams with different frequencies in an inhomogeneous Bose-Einstein
condensate are given. The potential well has a parabolic profile, and the nonlinearity belongs to a defocusing class. The
total reflection of a signal wave induced by a pump beam at a negative inhomogeneity during the wave capture in the potential
well is considered. 相似文献
8.
I. N. Lisichkina A. I. Vinogradova N. B. Sukhorukova M. B. Saporovskaya V. M. Belikov 《Russian Chemical Bulletin》1992,41(7):1293-1295
N-Ac-Phe-S-Pro forms strong coordination complexes with the CO2H group of the proline residue and weak coordination complexes through the -C(=O)-N groups with Ca(II) and Ni(II) ions in 95% aqueous methanol as indicated by the pK
a values, PMR spectroscopy, and paramagnetic broadening of the13C NMR signals in the nickel complex. Complex formation enhances the rigidity of the dehydrodipeptide conformation, leading to a strong increase in the optical yield upon hydrogenation over achiral catalysts.Institute of Food Substances, Russian Academy of Sciences, 117813 Moscow. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 7, pp. 1667–1670, July, 1992. 相似文献
9.
Interference of phonon and magnetic dipolar spin-spin interaction mechanisms in a finite magnet can result in a previously unexplored class of nonexchange spin waves. 相似文献
10.
A. L. Rusanov A. I. Kovalev A. A. Askadskii T. A. Isakova E. V. Sukhorukova Yu. S. Yakovleva R. S. Begunov 《Polymer Science Series B》2011,53(5-6):253-256
The interaction of undescribed 1,3-diamino-4-morpholinebenzene with dianhydrides of various aromatic tetracarboxylic acids yields morpholine-substituted soluble polyimides. The thermal properties of these polymers are studied. 相似文献