Zobrazeno 1 - 10
of 168
pro vyhledávání: '"Raoul R. Nigmatullin"'
Autor:
Raoul R. Nigmatullin, Airat A. Khamzin
Publikováno v:
Mathematics, Vol 11, Iss 18, p 3822 (2023)
We extend the scope of the unified factorization method to the solution of conditionally and unconditionally exactly solvable models of quantum mechanics, proposed in a previous paper [R.R. Nigmatullin, A.A. Khamzin, D. Baleanu, Results in Physics 41
Externí odkaz:
https://doaj.org/article/91e315a893d446a19e5819fdb5c35a42
Publikováno v:
Fractal and Fractional, Vol 7, Iss 7, p 498 (2023)
In this paper, the non-orthogonal amplitude-frequency analysis of smoothed signals (NAFASS) method) is used to approximate discrete aperiodic signals from various complex systems with the non-integer harmonic series (NIHS). When approximating by the
Externí odkaz:
https://doaj.org/article/1eda733c2027447e8a627da38573d45d
Autor:
Raoul R. Nigmatullin, YangQuan Chen
Publikováno v:
Mathematics, Vol 11, Iss 12, p 2781 (2023)
The well-known power-law fractal element was determined to need several important revisions by the authors of this work. It is now possible to demonstrate that any scaling equation associated with a fractal element is actually K-fold degenerated and
Externí odkaz:
https://doaj.org/article/ea2413e6de854e7e89d3f87473052e36
Autor:
Raoul R. Nigmatullin, Jocelyn Sabatier
Publikováno v:
Algorithms, Vol 16, Iss 4, p 199 (2023)
This work was greatly influenced by the opinions of one of the authors (JS), who demonstrated in a recent book that it is important to distinguish between “fractal models” and “fractal” (power-law) behaviors. According to the self-similarity
Externí odkaz:
https://doaj.org/article/7a76b10d1ac444929476a37c84699af1
Autor:
Valery H. Bagmanov, Albert Kh. Sultanov, Ivan K. Meshkov, Azat R. Gizatulin, Raoul R. Nigmatullin, Airat Zh. Sakhabutdinov
Publikováno v:
Fibers, Vol 10, Iss 1, p 4 (2022)
The article is devoted to issues related to the propagation and transformation of vortexes in the optical range of frequency. Within the framework of the traditional and modified model of slowly varying envelope approximation (SVEA), the process of c
Externí odkaz:
https://doaj.org/article/56e21f06f2cf44e09683019c475acddb
Autor:
Raoul R. Nigmatullin
Publikováno v:
Frontiers in Physics, Vol 8 (2020)
Previous work has determined the discrete geometrical invariant (DGI) in 2D space, which allows the analysis of a pair of random sequences ([r1k, r2k], k = 1,2,…N) containing an equal number of data points to be reduced to eight “universal” par
Externí odkaz:
https://doaj.org/article/4e396429a02444359850271ba8c1b7e9
Publikováno v:
Sensors, Vol 21, Iss 24, p 8242 (2021)
In the first time we apply the statistics of the complex moments for selection of an optimal pressure sensor (from the available set of sensors) based on their statistical/correlation characteristics. The complex moments contain additional source of
Externí odkaz:
https://doaj.org/article/656a7ca4768a4a9594c83f70b9013cc3
Autor:
Raoul R. Nigmatullin, Timur Agliullin, Sergey Mikhailov, Oleg Morozov, Airat Sakhabutdinov, Maxim Ledyankin, Kamil Karimov
Publikováno v:
Sensors, Vol 21, Iss 12, p 4028 (2021)
The work presents data treatment methods aimed at eliminating the noise in the strain sensor data induced by vibrations of the helicopter blade in flight conditions. The methods can be applied in order to enhance the metrological performance of the h
Externí odkaz:
https://doaj.org/article/fa115c6cf1294845a66a9a6ada461a60
Publikováno v:
IEEE/ACM Transactions on Computational Biology and Bioinformatics. 19:3038-3047
In this paper, a theoretical model has been proposed for the first time to illustrate the living Tulsi (Holy Basil) leaf evolution in describing the branching systems in the intermediate range of frequencies. The proposed fitting function following t
Publikováno v:
Fractal and Fractional; Volume 7; Issue 7; Pages: 498
In this paper, the non-orthogonal amplitude-frequency analysis of smoothed signals (NAFASS) method) is used to approximate discrete aperiodic signals from various complex systems with the non-integer harmonic series (NIHS). When approximating by the