Boris Levin

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In this paper we refer to a machine learning method that reveals all the if–then rules in the data, and on the basis of these rules issues predictions for new cases. When issuing predictions this method faces the problem of choosing from competing theories. We dealt with this problem by calculating the probability that the rule is accidental. The lower this(More)
  • Boris Levin
  • 2017 XI International Conference on Antenna…
  • 2017
The method for calculating directional characteristics of thin antennas with large dimensions: directional patterns, directivity, pattern factor is proposed. The analytical expressions are determined, and characteristics of metal dipoles, V-dipoles and analogous in-phase radiators are calculated. The importance of accounting the pattern factor for the(More)
  • Boris Levin
  • 2016 XXIst International Seminar/Workshop on…
  • 2016
The analytical expressions are obtained, and the method of calculating directional patterns of thin antennas with large dimensions was proposed. Directivity of dipoles, V-dipoles and in-phase radiators of similar types were calculated. The importance of accounting the magnitude PF for the estimate of a communication range was demonstrated.
  • Boris Levin
  • 2012 XVIIth International Seminar/Workshop on…
  • 2012
The compensation method permitting to reduce irradiation of the user's body and to create a weak field area (a dark spot) in the antenna near region for an operation in a wide frequency band is considered.
  • Boris Levin
  • 2015 XXth IEEE International Seminar/Workshop on…
  • 2015
The article tells about the contribution of Vainstein's theorem in the development of electromagnetic theory. In accordance with this theorem the total power of electromagnetic field consists of active and oscillating components. The first magnitude is the active part of the power flow, equal to its average value. The second magnitude is the oscillating(More)
  • Boris Levin
  • 2014 XIXth International Seminar/Workshop on…
  • 2014
Variants of volume self-complementary antennas (conic, parabolic et al.) are considered. Method of their analysis is described. Electrical characteristics depending on frequency are calculated and measured in models. Properties of different volume antennas are compared with each other and with properties of flat self-complementary antennas. It is shown that(More)
  • Boris Levin
  • 2017 XI International Conference on Antenna…
  • 2017
The method of calculating directional characteristics of director antenna: directional patterns, directivity, pattern factor is proposed. The analytical expressions are determined, and characteristics of antennas with metal dipoles, with V-dipoles and with analogous in-phase radiators are calculated. The advantage of in-phase radiators is demonstrated. It(More)
On the basis of phenomenological model of the orthopositronium annihilation ‘isotope anomaly’ in gaseous neon (lifetime spectra, positrons source Na) the realistic estimation of an additinal mode (∼0.2%) of the orthopositronium annihilation is received. PACS: 36.10Dr, 13.90.+i, 06.09.+v In huge volume of the data on lifetime spectra of annihilation in(More)
  • Boris Levin
  • 2013 IX Internatioal Conference on Antenna Theory…
  • 2013
The problem of creating the weak field area (dark spot) with the help of the auxiliary radiator in the wide frequency range is presented. The paper discusses methods of compensation, based on the use of identical antennas, on the antennas placement at the same distance from the compensation point and on the use of flat reflectors. Advantages and(More)