Results 41 to 50 of about 6,224 (54)

Studying the influence of correction codes on coherent reception of M-PSK signals in the presence of noise and harmonic interference

open access: yesРоссийский технологический журнал
Objectives. Signals with multiple phase shift keying (M-PSK) exhibiting good spectral and energy characteristics are successfully used in many information transmission systems.
V. D. Nguyen
doaj   +1 more source

Neural network analysis in time series forecasting

open access: yesРоссийский технологический журнал
Objectives. To build neural network models of time series (LSTM, GRU, RNN) and compare the results of forecasting with their mutual help and the results of standard models (ARIMA, ETS), in order to ascertain in which cases a certain group of models ...
B. Pashshoev, D. A. Petrusevich
doaj   +1 more source

Models of symmetric three-layer waveguide structures with graded-index core and nonlinear optical liners

open access: yesРоссийский технологический журнал
Objectives. Determining the patterns of dispersion properties of waveguide modes of the optical range in layered media with distributed optical properties is a both a pressing and significant matter for study. It has fundamental and applied importance in
S. E. Savotchenko
doaj   +1 more source

Automating the search for legal information in Arabic: A novel approach to document retrieval

open access: yesРоссийский технологический журнал
Objectives. The retrieval of legal information, including information related to issues such as punishment for crimes and felonies, represents a challenging task.
K. S. Jafar   +3 more
doaj   +1 more source

Method for limiting the peak factor using an additional compensation signal in a system with orthogonal frequency division multiplexing for a Gaussian channel

open access: yesРоссийский технологический журнал
Objectives. Orthogonal frequency division multiplexing (OFDM) has become the standard for various high-speed wireless communication systems due to its several advantages, one of which is the efficient use of bandwidth.
Th. T. Pham, O. V. Tikhonova
doaj   +1 more source

Cybersecurity of smart grids: Comparison of machine learning approaches training for anomaly detection

open access: yesРоссийский технологический журнал
Objectives. The transformation of modern electric grids into decentralized smart grids presents new challenges in the field of cybersecurity. The purpose of this work is to conduct research and analysis into the effectiveness of different machine ...
S. V. Kochergin   +5 more
doaj   +1 more source

Digital three-stage recursive-separable image processing filter with variable sizes of scanning multielement aperture

open access: yesРоссийский технологический журнал
Objectives. The main aim of digital image processing is to increase clarity while maintaining image quality and eliminate noise. However, the amount of information contained in digital image files is growing year after year.
A. V. Kamenskiy   +2 more
doaj   +1 more source

Reflections of linearly polarized electromagnetic waves from a multilayer periodic mirror

open access: yesРоссийский технологический журнал
Objectives. The purpose of the article is to carry out a theoretical and experimental study of the angular reflection spectrum of linearly polarized electromagnetic waves from a multilayer periodic mirror on a transparent substrate to exact analytical ...
D. Kh. Nurligareev   +2 more
doaj   +1 more source

Method for designing DC/DC converters based on Zeta topology

open access: yesРоссийский технологический журнал
Objectives. The work set out to develop a new design method for DC/DC converters based on the Zeta topology to calculate the ratings of inductors and capacitors of the Zeta converter with magnetically coupled inductors and verify the accuracy of the ...
Vladimir K. Bityukov   +1 more
doaj   +1 more source

Formation of a database of auxiliary information for positioning in an environment with heterogeneous radio transparency

open access: yesРоссийский технологический журнал
Objectives. A pressing problem for indoor positioning systems in the absence of access to global navigation satellite systems is low positioning accuracy.
Mikhail N. Krizhanovsky   +1 more
doaj   +1 more source

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