2,149 research outputs found
Wave Functions and Energy Terms of the SCHR\"Odinger Equation with Two-Center Coulomb Plus Harmonic Oscillator Potential
Schr\"odinger equation for two center Coulomb plus harmonic oscillator
potential is solved by the method of ethalon equation at large intercenter
separations. Asymptotical expansions for energy term and wave function are
obtained in the analytical form.Comment: 4 pages, no figures, LaTeX, submitted to PR
Intelligent OFDM telecommunication system. Part 3. Anti-eavesdropping and anti-jamming properties of system, based on many-parameter wavelet and Golay transforms
In this paper, we aim to investigate the superiority and practicability of many-parameter Fourier transforms (MPFT) from the physical layer security (PHY-LS) perspective. We propose novel Intelligent OFDM-telecommunication system (Intelligent-OFDM-TCS), based on MPFT. New system uses inverse MPFT for modulation at the transmitter and direct MPFT for demodulation at the receiver. The purpose of employing the MPFTs is to improve the PHY-LS of wireless transmissions against to the wide-band anti-jamming communication. Each MPFT depends on finite set of independent parameters (angles), which could be changed independently one from another. When parameters are changed, multi-parametric transform is also changed taking form of a set known (and unknown) orthogonal (or unitary) transforms. We implement the following performances as bit error rate (BER), symbol error rate (SER), the Shannon-Wyner secrecy capacity (SWSC) for novel Intelligent-MPWT-OFDM-TCS. Previous research has shown that the conventional OFDM TCS based on discrete Fourier transform (DFT) has unsatisfactory characteristics in BER, SWSC and in anti-eavesdropping communications. We study Intelligent-MPWT-OFDM-TCS to find out optimal values of angle parameters of MPFT optimized BER, SWSC, anti-eavesdropping effects. Simulation results show that the proposed Intelligent OFDM-TCS have better performances than the conventional OFDM system based on DFT against eavesdropping. Β© 2019 IOP Publishing Ltd. All rights reserved
Quantum tops as examples of commuting differential operators
We study the quantum analogs of tops on Lie algebras and
represented by differential operators.Comment: 24 p
Spectra of Doubly Heavy Quark Baryons
Baryons containing two heavy quarks are treated in the Born-Oppenheimer
approximation. Schr\"odinger equation for two center Coulomb plus harmonic
oscillator potential is solved by the method of ethalon equation at large
intercenter separations. Asymptotical expansions for energy term and wave
function are obtained in the analytical form. Using those formulas, the energy
spectra of doubly heavy baryons with various quark compositions are calculated
analytically.Comment: 19 pages, latex2e, published at PRC61(2000)04520
Operator method in solving non-linear equations of the Hartree-Fock type
The operator method is used to construct the solutions of the problem of the
polaron in the strong coupling limit and of the helium atom on the basis of the
Hartree-Fock equation. is obtained for the polaron
ground-state energy. Energies for 2s- and 3s-states are also calculated. The
other excited states are briefly discussed.Comment: 7 page
Many factor mimo-filters
ΠΡΡΠ»Π΅Π΄ΡΠ΅ΡΡΡ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΌΠ½ΠΎΠ³ΠΎΡΠ°ΠΊΡΠΎΡΠ½ΡΡ
(Π±ΠΈ-, ΡΡΠΈ- ΠΈ ΡΠ΅ΡΡΡΠ΅Ρ
-Π»Π°ΡΠ΅ΡΠ°Π»ΡΠ½ΡΡ
) MIMO-ΡΠΈΠ»ΡΡΡΠΎΠ² Π΄Π»Ρ ΡΠ΅ΡΡΡ
, ΡΠ²Π΅ΡΠ½ΡΡ
ΠΈ Π³ΠΈΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΡΠ°Π»ΡΠ½ΡΡ
ΠΈΠ·ΠΎΠ±ΡΠ°ΠΆΠ΅Π½ΠΈΠΉ. ΠΠ±ΡΡΠ½ΡΠ΅ Π±ΠΈΠ»Π°ΡΠ΅ΡΠ°Π»ΡΠ½ΡΠ΅ ΡΠΈΠ»ΡΡΡΡ ΠΎΡΡΡΠ΅ΡΡΠ²Π»ΡΡΡ Π²Π·Π²Π΅ΡΠ΅Π½Π½ΠΎΠ΅ ΡΡΡΠ΅Π΄Π½Π΅Π½ΠΈΠ΅ ΡΠΎΡΠ΅Π΄Π½ΠΈΡ
ΠΏΠΈΠΊΡΠ΅Π»Π΅ΠΉ. ΠΠ΅ΡΠ° Π²ΠΊΠ»ΡΡΠ°ΡΡ Π΄Π²Π΅ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΡ: ΠΏΡΠΎΡΡΡΠ°Π½ΡΡΠ²Π΅Π½Π½ΡΡ ΠΈ ΡΠ°Π΄ΠΈΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΡΡ. ΠΠ΅ΡΠ²Π°Ρ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΠ° ΡΡΠΈΡΡΠ²Π°Π΅Ρ Π³Π΅ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΡΠ°ΡΡΡΠΎΡΠ½ΠΈΠ΅ ΠΌΠ΅ΠΆΠ΄Ρ ΡΠ΅Π½ΡΡΠ°Π»ΡΠ½ΡΠΌ ΠΏΠΈΠΊΡΠ΅Π»Π΅ΠΌ ΠΌΠ°ΡΠΊΠΈ ΠΈ Π΅Π³ΠΎ Π»ΠΎΠΊΠ°Π»ΡΠ½ΡΠΌΠΈ ΡΠΎΡΠ΅Π΄ΡΠΌΠΈ. ΠΡΠΎΡΠΎΠΉ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½Ρ ΡΡΠΈΡΡΠ²Π°Π΅Ρ ΡΠ°Π΄ΠΈΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΡΠ°ΡΡΡΠΎΡΠ½ΠΈΠ΅ ΠΌΠ΅ΠΆΠ΄Ρ ΡΠ΅Π½ΡΡΠ°Π»ΡΠ½ΡΠΌ ΠΏΠΈΠΊΡΠ΅Π»Π΅ΠΌ ΠΌΠ°ΡΠΊΠΈ ΠΈ Π΅Π³ΠΎ Π»ΠΎΠΊΠ°Π»ΡΠ½ΡΠΌΠΈ ΡΠΎΡΠ΅Π΄ΡΠΌΠΈ. Π ΡΡΠΎΠΌ ΠΊΠ»Π°ΡΡΠΈΡΠ΅ΡΠΊΠΎΠΌ Π°Π»Π³ΠΎΡΠΈΡΠΌΠ΅ ΡΠ΅Π½ΡΡΠ°Π»ΡΠ½ΡΠΉ ΠΏΠΈΠΊΡΠ΅Π»Ρ ΠΌΠ°ΡΠΊΠΈ ΠΈΠ³ΡΠ°Π΅Ρ ΠΎΠΏΡΠ΅Π΄Π΅Π»ΡΡΡΡΡ ΡΠΎΠ»Ρ Π² ΠΊΠΎΠ½Π΅ΡΠ½ΠΎΠΌ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ΅ ΡΠΈΠ»ΡΡΡΠ°ΡΠΈΠΈ. ΠΡΠ»ΠΈ ΠΎΠ½ ΠΈΡΠΊΠ°ΠΆΠ΅Π½, ΡΠΎ ΠΈ ΡΠ΅Π·ΡΠ»ΡΡΠ°Ρ ΡΠΈΠ»ΡΡΡΠ°ΡΠΈΠΈ Π±ΡΠ΄Π΅Ρ ΠΈΡΠΊΠ°ΠΆΠ΅Π½Π½ΡΠΌ. ΠΡΠΎΡ ΡΠ°ΠΊΡ ΠΎΠΏΡΠ΅Π΄Π΅Π»ΡΠ΅Ρ ΠΏΠ΅ΡΠ²ΡΡ ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠ°ΡΠΈΡ: ΡΠ΅Π½ΡΡΠ°Π»ΡΠ½ΡΠΉ ΠΏΠΈΠΊΡΠ΅Π»Ρ Π·Π°ΠΌΠ΅Π½ΡΠ΅ΡΡΡ Π΅Π³ΠΎ Π»ΡΠ±ΠΎΠΉ ΡΠ³Π»Π°ΠΆΠ΅Π½Π½ΠΎΠΉ Π²Π΅ΡΡΠΈΠ΅ΠΉ, ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΠΎΠΉ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΡΠΎΡΠ΅Π΄Π½ΠΈΡ
ΠΏΠΈΠΊΡΠ΅Π»Π΅ΠΉ. ΠΡΠΎΡΠ°Ρ ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠ°ΡΠΈΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΡΠ΅Ρ ΠΌΠ°ΡΡΠΈΡΠ½ΠΎ-Π·Π½Π°ΡΠ½ΡΠ΅ Π²Π΅ΡΠ°. ΠΠ½ΠΈ Π²ΠΊΠ»ΡΡΠ°ΡΡ ΡΠ΅ΡΡΡΠ΅ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΡ: ΠΏΡΠΎΡΡΡΠ°Π½ΡΡΠ²Π΅Π½Π½ΡΡ, ΡΠ°Π΄ΠΈΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΡΡ, ΠΌΠ΅ΠΆΠΊΠ°Π½Π°Π»ΡΠ½ΡΡ ΠΈ ΡΠ°Π΄ΠΈΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΡΡ ΠΌΠ΅ΠΆΠΊΠ°Π½Π°Π»ΡΠ½ΡΡ. Π§Π΅ΡΠ²Π΅ΡΡΡΠΉ Π²Π΅Ρ ΡΡΠΈΡΡΠ²Π°Π΅Ρ ΡΠ°Π΄ΠΈΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΡΠ°ΡΡΡΠΎΡΠ½ΠΈΠ΅ ΠΌΠ΅ΠΆΠ΄Ρ ΡΠ΅Π½ΡΡΠ°Π»ΡΠ½ΡΠΌ ΠΏΠΈΠΊΡΠ΅Π»Π΅ΠΌ ΠΈ ΠΌΠ΅ΠΆΠΊΠ°Π½Π°Π»ΡΠ½ΡΠΌΠΈ ΡΠΎΡΠ΅Π΄Π½ΠΈΠΌΠΈ ΠΏΠΈΠΊΡΠ΅Π»ΡΠΌΠΈ
Effects of non-resonant interaction in ensembles of phase oscillators
We consider general properties of groups of interacting oscillators, for
which the natural frequencies are not in resonance. Such groups interact via
non-oscillating collective variables like the amplitudes of the order
parameters defined for each group. We treat the phase dynamics of the groups
using the Ott-Antonsen ansatz and reduce it to a system of coupled equations
for the order parameters. We describe different regimes of co-synchrony in the
groups. For a large number of groups, heteroclinic cycles, corresponding to a
sequental synchronous activity of groups, and chaotic states, where the order
parameters oscillate irregularly, are possible.Comment: 21 pages, 7 fig
The Evolution of the Β«AmericaΒ» Concept Representation within the Framework of the American Photographic Discourse of the XX Ρentury
The present article is devoted to the analysis of the concept America as exemplified by the nominative paradigm of the American photographic discourse. The authors presume that the practical significance of the present article consists of the applicability of research results during the Practical English and American Studies classes due to the full language immersion to the linguocultural worldview of the USA by virtue of such photographs qualities as illustrative purpose and authenticity. The relevance of research is determined by the necessity of investigating the influence that the American photographic discourse has on the artistic and social-political spheres of society life. The aim of the present article is to study the constituents of America concept from the point of view of linguosynergetic approach interpreted as examination of the dynamic language system over a long period of time. The authors analyze the American photographic discourse as a complex communicative phenomenon, examine the interaction and interinfluence of the pictorial art and photography as part of the American artistic tradition. The authors analyze the semantic peculiarities of the America macro-concept and also carry out research regarding the structure of Area, Human, Architecture, Environment, History, Culture micro-concepts, which actualize the America macro-concept. The authors conclude that the nominative paradigm of the American photographic discourse is characterized by a high degree of anthropocentricity, personal photographers interest in the new objects of research (Hi-Tech, Human / Nude), searching the new forms of artistic photography. The evolution of the nominative paradigm results in decrease of the qualitative rate of Racism and The Great Depression concepts representatives as a result of the objective socio-historic events
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