Automatic Control and Computer Sciences

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Estimation of stability of oscillations of linear time-varying systems with one time-varying parameter with calculation of influence of higher frequency motions
Automatic Control and Computer Sciences - Tập 51 - Trang 141-148 - 2017
A. V. Mandrik
The paper reveals a new method for estimation of stability of oscillations of linear time invariant systems with one time-varying parameter given by a harmonic function. The suggested approach includes building a matrix of transfer functions, which calculates interference of the highfrequency oscillations of the output of the linear time-invariant part of the system. Suggested approach makes possi...... hiện toàn bộ
Analysis of web server log files and attack detection
Automatic Control and Computer Sciences - Tập 42 - Trang 50-54 - 2008
R. Faradzhullaev
Problems of web application security and antihacker protection are very topical. Queries that users send to a web application via the Internet are registered in log files of the web server. Analyzing log files allows detecting anomalous changes that take place on the web server and identifying attacks. In this work, different methods are used to analyze log files and detect anomalies. The proposed...... hiện toàn bộ
Transmission Sensing of Dielectric Objects for Determining the Geometric Shape of the Cross Section and the Detection of Internal Inhomogeneities
Automatic Control and Computer Sciences - Tập 57 - Trang 196-202 - 2023
V. Aristov
In this work, the possibility of determining the geometric shape of the cross section of dielectric objects in the case of a priori information on their internal homogeneity or detecting integral internal inhomogeneities in the case of a priori information on the geometric shape of the cross section via the transmission sensing of these objects with ultra-wideband pulse radars with a central frequ...... hiện toàn bộ
Nondestructive RAM testing based on multiple signature comparison
Automatic Control and Computer Sciences - Tập 43 - Trang 173-178 - 2009
S. V. Yarmolik, V. N. Yarmolik
In the present article, the problem is considered of nondestructive testing of modern RAM devices by means of multiple signature comparison. It is shown that the reference signature values for each phase of a march test are determined only by the present RAM state; furthermore, the use of two kinds of signature analyzers allows performing an analysis of the testing results on completion of each ph...... hiện toàn bộ
Securing Post-Quantum Resistance for Quantum-Protected Communication Systems
Automatic Control and Computer Sciences - Tập 54 - Trang 949-951 - 2021
E. N. Shkorkina, E. B. Aleksandrova
Methodology for protecting the systems of quantum-protected communication based on postquantum crypto-algorithm usage at all stages of operation is presented. Authenticated encryption and postquantum signcryption makes it possible to reduce the number of keys in a quantum-protected system and to increase the number of interacting devices.
Real-Time Implementation of a Novel Automatic Gain Control Algorithm for Infrared Image Processing Based on MPSoC
Automatic Control and Computer Sciences - - 2022
Nguyen Nhu Hung, Cao Huu Tinh, D. V. Minh
Comparison of Metrocar System with Dual-Mode Transit Systems
Automatic Control and Computer Sciences - Tập 56 - Trang 546-552 - 2023
Mehmet Bozuyla, Abdullah T. Tola
Smart city researches and corresponding solutions increased progressively over the last two decades. Particularly smart mobility, which is an important part of the smart city philosophy, solution to multifaceted transportation problem gained relatively importance due to the traffic congestion. MetroCar System (MCS) is one of the new dual-mode transit (DMT) system, i.e., part of smart mobility, was...... hiện toàn bộ
Research an indirect method of calculating complex antenna impedance
Automatic Control and Computer Sciences - Tập 48 - Trang 375-380 - 2015
M. Greitans, E. Hermanis, V. Aristov
In this paper, we research an indirect method of measuring the complex impedance at the end of a long line, in particular the feed impedance of wideband antennas. The method is based on a spectral analysis of incident and reflected pulses. The method is shown to be useful for certain restrictions on measuring active and reactive components in a band up to several gigahertzes.
Injection of functional faults in VHDL-description of digital devices
Automatic Control and Computer Sciences - Tập 41 - Trang 119-125 - 2007
A. A. Ivanyuk, V. N. Yarmolik
A technique of describing functional faults in digital devices in the VHDL language is described. It is shown that injection of faults into models by means of a modification of the initial language constructions does not provide an adequate representation of physical defects. It is proposed that models of functional faults that have been obtained following technological synthesis of designed devic...... hiện toàn bộ
Multi-Attention Mechanism Medical Image Segmentation Combined with Word Embedding Technology
Automatic Control and Computer Sciences - Tập 54 - Trang 560-571 - 2021
Junlong Cheng, Shengwei Tian, Long Yu, Hongfeng You
In order to solve the problems of low gray scale contrast and blurred organ boundaries in some medical images, we proposed a joint algorithm of Multi-Attention Parallel CNNs and Independent Recurrent Neural Networks (MACIR) with word embedding technique combined. First, the word embedding technique is used to map the sparse spatial relation matrix into a real dense vector, which is combined with g...... hiện toàn bộ
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