Begell House Inc.
Telecommunications and Radio Engineering
TRE
0040-2508
78
11
2019
CONSISTENCY OF THE DEFINITION OF THE MAGNETIC MOMENT WITH THE PRINCIPLE OF PERMUTATIONAL DUALITY
933-938
10.1615/TelecomRadEng.v78.i11.10
S. S.
Sautbekov
L.N. Gumilyov Eurasian National University, 2, Mirzoyana St., Astana 010000, Republic of Kazakhstan; Al-Farabi Kazakh National University, 71, al-Farabi Av., Almaty 050040, Republic of Kazakhstan
Yuriy
Sirenko
IRE NAN Ukraine
A.G.
Asylbekova
Al-Farabi Kazakh National University, 71, al-Farabi Av., Almaty 050040, Republic of Kazakhstan
Maxwell's equations
magnetic moment
the principle of permutation duality
generalized solution of the system of the Maxwell equations
electrodynamic potentials
A representation of the principle of permutation duality of Maxwell's equations, which differs from the traditional representation by symmetry with respect to direct and inverse permutations of electrical and magnetic quantities and ease of use, is proposed. A generalized solution of the corresponding symmetric system of Maxwell's equations is constructed. The definition of the magnetic moment of arbitrarily distributed in the environment of closed currents is given, consistent with the newly formulated principle of permutation duality.
SENSOR FOR MEASURING THE PERMITTIVITY OF SOLID AND GASEOUS SUBSTANCES ON THE BASIS OF A FABRY- PEROT RESONATOR WITH EVANESCENT HOLES IN THE MIRRORS
939-947
10.1615/TelecomRadEng.v78.i11.20
A. V.
Gribovsky
Institute of Radio Astronomy, National Academy of Sciences of Ukraine, 4 Mystetstv St.,
Kharkiv 61002, Ukraine
Fabry-Perot resonator
rectangular waveguide
permittivity
The paper suggests a design of a sensor for measuring and monitoring the permittivity of solid and gaseous substances. The sensor is based on a Fabry-Perot resonator with evanescent
rectangular holes in its mirrors. Numerical simulations of the characteristic of the sensor with a dielectric plate and that placed in a gaseous medium demonstrate a possibility of high precision measurements of the dielectric constant of solid and gaseous substances within a wide frequency range
FREQUENCY DEPENDENCE OF PERMITTIVITY OF ONE-DIMENSIONAL BRAGG STRUCTURE
949-955
10.1615/TelecomRadEng.v78.i11.30
A.V.
Yevchik
Oles Honchar Dnipro National University, 72 Gagarina Ave, Dnipro, Ukraine
S. V.
Plaksin
Institute of Transport Systems and Technology
National Academy of Sciences of Ukraine
5 Pisarzhevskogo St., Dnipro, 490056, Ukraine
the value of the photon band gap
refractive index
completely scattering medium
permittivity
The purpose of this study is to develop a one-dimensional model of the Bragg structure taking into account the dispersion of dielectric layer permittivity. The study of the characteristics of the model is based on the dispersion and reflection spectra.
ADVANCE REMOTE USER AUTHENTICATION SCHEME USING SMART CARD
957-971
10.1615/TelecomRadEng.v78.i11.40
S.
Kumar
Department of Computer Science & Engineering, Ajay Kumar Garg Engineering College, Ghaziabad, UP, India
V.
Singh
Department of Computer Science & Engineering, Ajay Kumar Garg Engineering College, Ghaziabad, UP, India
V.
Sharma
Department of Computer Science & Engineering, Ajay Kumar Garg Engineering College, Ghaziabad, UP, India
Vijay
Singh
In 2016, Kaul and Awasthi proposed security enhancement of an improved remote user authentication scheme with key agreement and they proclaimed that their scheme ensures secure communication on an insecure channel and they also proposed that their scheme is secure against active and passive attacks. But in this paper, we demonstrate that their proposed scheme is completely insecure against malicious user attack, insider attack and also that an arbitrary user can easily reregister him, if he has certain parameters of Kaul et al. proposed scheme. Thus collapses the entire security of the system as well as user's data and author claims are proven to be incorrect. Hence to cure the identified security flaws and to ensure the communication through an insecure channel, we proposed a better secure and efficient authentication protocol mechanism and also we have added some necessary phase required in authentication.
ON HIDING DATA INTO THE STRUCTURE OF THE FAT FAMILY FILE SYSTEM
973-985
10.1615/TelecomRadEng.v78.i11.50
K.Yu.
Shekhanin
V. Karazin National University of Kharkiv, 4 Svobody Sq., Kharkiv 61022, Ukraine
A.O.
Kolhatin
V. Karazin National University of Kharkiv, 4 Svobody Sq., Kharkiv 61022, Ukraine
E.E.
Demenko
V. Karazin National University of Kharkiv, 4 Svobody Sq., Kharkiv 61022, Ukraine
A. A.
Kuznetsov
V. Karazin National University of Kharkiv, 4 Svobody Sq., Kharkiv 61022, Ukraine
hiding data
steganography
file system
cover files
Methods of technical steganography, namely, those ones based on hiding information messages into the structure of the FAT family file system are studied. The basic method based on changing the numbering of individual clusters of covering files is considered, its advantages and disadvantages are investigated. An improved method is proposed that makes it possible to increase significantly the amount of hidden data. The results of the comparative analysis of the methods of hiding data into the structure of the FAT family file system are given.
AUTHENTICATION OF USERS OF MOBILE DEVICES BY THEIR MOTOR REACTIONS
987-1003
10.1615/TelecomRadEng.v78.i11.60
A. S.
Nechiporenko
Kharkiv National University of Radio Engineering and Electronics, 14, Nauka Ave, Kharkiv, 61166, Ukraine
E.V.
Gubarenko
Kharkiv National University of Radio Electronics, 14 Nauka Ave, Kharkiv 61166, Ukraine
M.S.
Gubarenko
Kharkiv National University of Radio Electronics, 14 Nauka Ave, Kharkiv 61166, Ukraine
biometric authentication
DTW algorithm
user
mobile device
time series
hold time
reaction time
FAR (False Accept Rate)
FRR (False Reject Rate)
This paper analyzes the current state of the problem on user authentication, in particular, users of mobile devices. A method for authenticating users of mobile devices has been suggested and discussed in details. The description of the developed software that implements the suggested method is given. The experiment has been planned and conducted with the developed authentication method to determine the indicators FAR and FRR. The analysis of the effectiveness of the developed user authentication method has been carried out and it has been compared with existing analogues.
THE LOCAL MICROWAVE HEATING TECHNOLOGY
1005-1013
10.1615/TelecomRadEng.v78.i11.70
I. N.
Bondarenko
Kharkiv National University of Radio Engineering and Electronics, 14, Nauka Ave, Kharkiv, 61166, Ukraine
G. N.
Bendeberya
Tavriya National University, 4, Vernadskogo ave., Simpheropol, 95007, Ukraine; Kharkiv National University of Radio Electronics, 14 Nauka Ave, Kharkiv 61166, Ukraine
A. B.
Galat
Kharkiv National University of Radio Engineering and Electronics, 14, Lenin Ave, Kharkiv, 61166, Ukraine
Е.А.
Gorbenko
Kharkiv National University of Radio Electronics, 14 Nauka Ave, Kharkiv 61166, Ukraine
localization
microwave heating
coaxial probe
near-field radiation source
temperature distribution
Experimental studies of the possibilities of practical implementation of local microwave heating technology have been carried out. The correspondence of the existing theoretical models of the process to what is happening in practice is shown. The results of measuring the temperature distribution over the sample when exposed to a radiating microwave coaxial probe are given. The directions for further improvement of the operating modes and the main components of the microwave modifier are determined.
THE USE OF SEMI-MARKOV NESTED PROCESSES FOR THE DESCRIPTION OF NON-STATIONARY ACOUSTIC NOISE
1015-1025
10.1615/TelecomRadEng.v78.i11.80
V. I.
Lutsenko
O.Ya. Usikov Institute for Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12 Academician Proskura St., Kharkiv 61085, Ukraine
I. V.
Lutsenko
O.Ya. Usikov Institute for Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12 Academician Proskura St., Kharkiv 61085, Ukraine
M. F.
Babakov
National Aerospace University (Kharkov Aviation Institute), 17, Chkalov St., Kharkiv, 61070, Ukraine
Y.
Luo
V.N. Karazin Kharkiv National University, 4 Svobody Sq., Kharkiv 61022, Ukraine
A. V.
Sobolyak
State Enterprise "Kharkiv Morozov Machine-Building Design Bureau",
126 Plekhanivska St., Kharkiv, 61001, Ukraine
anthropogenic noise sources
nested semi-Markov processes
non-
stationary acoustic noises
piecewise broken dependence of spectra
two-phase state cycle diagram
Interference to acoustic detection systems, which are currently showing increasing interest, is created by the natural noise (wind, rain) and anthropogenic sources (human, animal, equipment), from which useful signals must be extracted (technical noise, the sound of gunshots). Both interference and useful signals are essentially non-stationary processes. In most cases, due to insufficient research on their characteristics, there are no simulation models and appropriate description methods. They are the subject of research and description in this work. This paper presents the experimental results of studying statistical characteristics
(spectrum, distribution law, their numerical characteristics), depending on the weather conditions and the observed geometry of the noise source. Using the nested semi-Markov process, a simulation model of non-stationary acoustic noise generated by natural and anthropogenic objects is proposed. The results show that the proposed model satisfactorily describes the acoustic noise caused by wind, rain, leaves of trees, the footsteps of people and animals, as well as the sounds of shots. It is shown that the noise of the wind, the foliage of trees, the steps of a person and the sounds of shots from automatic weapons are satisfactorily described by the proposed model. The basis is a physical experiment combined with mathematical modeling. The conclusion is that nested semi-Markov processes can be used to describe unstable acoustic noise caused by the natural noise and anthropogenic sources.
THE INFLUENCE OF γ-IRRADIATION ON ELECTRICAL PROPERTIES OF CdIn2Te4 CRYSTALS
1027-1032
10.1615/TelecomRadEng.v78.i11.90
O.G.
Grushka
Institute of Physical-Technical and Computer Science, Yuriy Fedkovych Chernivtsi National University, 2 Kotsyubinsky Str., 58012 Chernivtsi, Ukraine
V.T.
Maslyuk
Institute of Electron Physics of Ukrainian National Academy of Science, 88016 Uzhgorod, Ukraine
S.M.
Chupyra
Institute of Physical-Technical and Computer Science, Yuriy Fedkovych Chernivtsi National University, 2 Kotsyubinsky Str., 58012 Chernivtsi, Ukraine
O.M.
Myslyuk
Institute of Physical-Technical and Computer Science, Yuriy Fedkovych Chernivtsi National University, 2 Kotsyubinsky Str., 58012 Chernivtsi, Ukraine
O. M.
Slyotov
Institute of Physical-Technical and Computer Science, Yu. Fedkovych Chernivtsi
National University, 2 Kotsyubinsky Str., 58012 Chernivtsi, Ukraine
CdIn2Te4 compound
stoichiometric vacancies
γ-irradiation
electrical properties
Fermi level
The influence of γ-irradiation on the basic electrical parameters of CdIn2Te4 crystals in the temperature range of 240-410 K has been investigated. It was established that the noticeable changes in the parameters of the irradiated samples take place under irradiation doses D > 1·108 Roentgen. It was shown that under dose D = 1.2·108 Roentgen and additional dose D = 4·108 Roentgen the parameters change slightly at high temperature T > 350 K and at T < 350 K the changes of parameters increase with rising γ-irradiation dose. The anomalous increase of the Hall mobility in the irradiated samples was found and the explanation of the obtained effect nature was proposed. It was shown that the main cause of the changes of the electrical parameters under the influence of γ-irradiation is the Fermi-level displacement within the energy gap of CdIn2Te4 crystals.