Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Dmitrii Tumakov"'
Publikováno v:
Journal of Imaging, Vol 8, Iss 5, p 128 (2022)
Today, the processing and analysis of mammograms is quite an important field of medical image processing. Small defects in images can lead to false conclusions. This is especially true when the distortion occurs due to minor malfunctions in the equip
Externí odkaz:
https://doaj.org/article/b3a78752d02a467baf24fe5983b15980
Autor:
Alexey Kolchev, Dmitry Pasynkov, Ivan Egoshin, Ivan Kliouchkin, Olga Pasynkova, Dmitrii Tumakov
Publikováno v:
Journal of Imaging, Vol 8, Iss 4, p 88 (2022)
Background: We directly compared the mammography image processing results obtained with the help of the YOLOv4 convolutional neural network (CNN) model versus those obtained with the help of the NCA-based nested contours algorithm model. Method: We u
Externí odkaz:
https://doaj.org/article/8208e85fa62c4c66a74f847667b40b14
Autor:
Alena Khadieva, Olga Mostovaya, Pavel Padnya, Valeriy Kalinin, Denis Grishaev, Dmitrii Tumakov, Ivan Stoikov
Publikováno v:
International Journal of Molecular Sciences, Vol 22, Iss 11, p 5847 (2021)
The synthesis of new phenothiazine derivatives, analogs of Methylene Blue, is of particular interest in the design of new drugs, as well as in the development of a new generation of agents for photodynamic therapy. In this study, two new derivatives
Externí odkaz:
https://doaj.org/article/295f27dedd624b8d86294a9fd3b56383
Publikováno v:
Fractal and Fractional, Vol 4, Iss 2, p 25 (2020)
Koch-type wire dipole antennas are considered herein. In the case of a first-order prefractal, such antennas differ from a Koch-type dipole by the position of the central vertex of the dipole arm. Earlier, we investigated the dependence of the base f
Externí odkaz:
https://doaj.org/article/4d278f026215475287d96198cf8e21af
Autor:
Dmitrii Tumakov
Publikováno v:
International Journal of Optics, Vol 2014 (2014)
The problem of reconstruction of a one-dimensional profile of gradient layer’s refractive index is investigated. An algorithm for choosing a right frequency, at which a scattered field is measured, is proposed. It is concluded that at the correct c
Externí odkaz:
https://doaj.org/article/2e2d3e51860b4a6f814343206e23004f
Autor:
Dmitrii Tumakov, Dina Latypova
Publikováno v:
Program Systems: Theory and Applications. 13:241-254
Clustering of handwritten digits is carried out for sixty thousand images contained in the training sample of the MNIST database. For clustering, the Kohonen neural network is used. For each handwritten digit, the optimal number of clusters (no more
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b96365f92c1f8436d15690716ea5f240
https://doi.org/10.25209/2079-3316-2022-13-3-241-254
https://doi.org/10.25209/2079-3316-2022-13-3-241-254
Autor:
Sadullozoda, Shahriyor, Abdullozoda, Ramazona, Giniatullin, Artur, Dmitrii, Tumakov, Elshin, Leonid
Publikováno v:
Proceedings of SPIE; February 2024, Vol. 13065 Issue: 1 p130650U-130650U-6, 1175857p
Publikováno v:
Lobachevskii Journal of Mathematics. 42:1335-1344
The problem of electromagnetic wave diffraction by a flat convex screen of arbitrary shape is considered. The numerical solution for the problem is obtained by the method of moments using the parallel programming technology CUDA. As basic and testing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f5af9bb137ec1dffc8f056d22584884
https://doi.org/10.1134/s1995080221060081
https://doi.org/10.1134/s1995080221060081
Publikováno v:
Lobachevskii Journal of Mathematics. 42:1355-1369
The classical problem of the electromagnetic wave diffraction by a rectangular perfectly conducting metal plate is considered. The solution of the problem is reduced to the solving integral equations for the tangential components of the magnetic inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27650af33987f3cb29f110cb94bd3da4
https://doi.org/10.1134/s1995080221060184
https://doi.org/10.1134/s1995080221060184