Посмотр Physics and Astronomy по названию
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A bio inspired learning scheme for the fractional order kidney function model with neural networks
(Chaos, Solitons and Fractals, 2024)The numerical procedures of the fractional order kidney function model (FO-KFM) are presented in this study. These derivatives are implemented to get the precise and accurate solutions of FO-KFM. The nonlinear form of KFM is separated into human (infected, susceptible, recovered) and the components of water (calcium, mag nesium). Three cases of FO-KFM are numerically accessible ...2025-01-08 -
A bio inspired learning scheme for the fractional order kidney function model with neural networks
(Chaos, Solitons and Fractals, 2024)The numerical procedures of the fractional order kidney function model (FO-KFM) are presented in this study. These derivatives are implemented to get the precise and accurate solutions of FO-KFM. The nonlinear form of KFM is separated into human (infected, susceptible, recovered) and the components of water (calcium, mag nesium). Three cases of FO-KFM are numerically accessible ...2026-03-26 -
A brief review of conductivity and thermal expansion of perovskite-related oxides for SOFC cathode
(Eurasian Journal of Physics and Functional Materials, 2018)Cathode materials with mixed ion-electron conductivity (MIEC) are necessary for the development of low or intermediate temperature solid oxide fuel cells. Perovskite and perovskite-related materials are promising candidates on this role. In the review the conductivity and the thermal expansion of materials with various types of perovskite-related structures such as pure ...2025-01-09 -
A comparative study of promising filter materials for neutron imaging facilities
(Eurasian Journal of Physics and Functional Materials, 2021)The effect of sapphire and bismuth single-crystal filters and their combinations on the quality of neutron radiographic images and neutron tomography data has been studied. The parameters of the contrast of the neutron image were analyzed depending on the monocrystalline filters. Neutron transmission spectra were obtained for sapphire and bismuth single crystals. Additionally, ...2025-01-09 -
A comprehensive parametrization approach for the Hubble parameter in scalar field dark energy models
(Results in Physics, 2023)This study proposes a novel parametrization approach for the dimensionless Hubble parameter i.e. 𝐸2 (𝑧) = 𝐴(𝑧) + 𝛽(1 + 𝛾𝐵(𝑧)) in the context of scalar field dark energy models. The parametrization is characterized by two functions, 𝐴(𝑧) and 𝐵(𝑧), carefully chosen to capture the behavior of the Hubble parameter at different redshifts. We explore the evolution of ...2025-01-08 -
A comprehensive parametrization approach for the Hubble parameter in scalar field dark energy models
(Results in Physics, 2023)This study proposes a novel parametrization approach for the dimensionless Hubble parameter i.e. E2(z)=A(z)+β(1+γB(z)) in the context of scalar field dark energy models. The parameterization is characterized by two functions, A(z) and B(z), carefully chosen to capture the behavior of the Hubble parameter at different redshifts. We explore the evolution of cosmological parameters, ...2025-01-09 -
A COMPREHENSIVE PHENOMENOLOGICAL, SEMI-MICROSCOPIC, AND CRC ANALYSIS OF 15N ELASTIC SCATTERING FROM 13C AND 19F NUCLEI
(Eurasian Physical Technical Journal, 2025)In the present study, the angular distributions obtained at beam energies Elab = 30.0, 32.0 and 45.0 MeV for the 15N+ 13С reaction and Elab = 23.0, 26.0 and 29.0 MeV for the 15N+ 19F system were subjected to a comprehensive reanalysis using the optical model, the double folding model, and the coupled reaction channel (CRC) method. The main objective of the study was to ...2026-03-26 -
A holographic bound for D3-brane
(Eurasian Physical Technical Journal C, 2017)In this paper, we will regularize the holographic entanglement entropy, holographic complexity and fidelity susceptibility for a configuration of D3-branes. We will also study the regularization of the holographic complexity from the action for a configuration of D3-branes. It will be demonstrated that for a spherical shell of D3-branes the regularized holographic complexity ...2025-01-09 -
A measurement of the K+→π+μ+μ− decay
(Journal of High Energy Physics, 2022)A sample of 2.8×104 K+→π+μ+μ− candidates with negligible background was collected by the NA62 experiment at the CERN SPS in 2017--2018. The model-independent branching fraction is measured to be (9.15±0.08)×10−8, a factor three more precise than previous measurements. The decay form factor is presented as a function of the squared dimuon mass. A measurement of the form factor ...2025-01-09 -
A new f (Q) cosmological model with H (z) quadratic expansion
(Physics of the Dark Universe, 2023)We present a new f(Q) cosmological model capable of reproducing late-time acceleration, i.e. f(Q)=λ0(λ+Q)n by supporting certain parametrization of the Hubble parameter. By using observational data from Hubble, Pantheon, and Baryonic Acoustic Oscillations (BAO) dataset, we investigate the constraints on the proposed quadratic Hubble parameter H(z). This proposal caused the Universe ...2025-01-08 -
A new Om(z) diagnostic of dark energy in general relativity theory
(The European Physical Journal C, 2023)In this paper, we propose a new parametrization of dark energy based on the Om(z) diagnostic tool behavior. For this purpose, we investigate a functional form of the Om(z) that predicts the popular dark energy dynamical models, namely phantom and quintessence. We also found the famous cosmological constant for specified values of the model’s parameters. We employed the Markov ...2025-01-08 -
A new Om(z) diagnostic of dark energy in general relativity theory
(Eurasian Physical Technical Journal C, 2023)In this paper, we propose a new parametrization of dark energy based on the Om(z) diagnostic tool behavior. For this purpose, we investigate a functional form of the Om(z) that predicts the popular dark energy dynamical models, namely phantom and quintessence. We also found the famous cosmological constant for specified values of the model’s parameters. We employed the Markov ...2025-01-09 -
A Novel Asymptotic Solution to the Sommerfeld Radiation Problem: Analytic Field Expressions and the Emergence of the Surface Waves
(Progress In Electromagnetics Research M, 2018)The well-known “Sommerfeld radiation problem” of a small -Hertzian- vertical dipole above flat lossy ground is reconsidered. The problem is examined in the spectral domain, through which it is proved to yield relatively simple integral expressions for the received Electromagnetic (EM) field. Then, using the Saddle Point method, novel analytical expressions for the scattered ...2025-01-09 -
A Real-Time Dynamic Gesture Variability Recognition Method Based on Convolutional Neural Networks
(Applied Sciences, 2023)Among the many problems in machine learning, the most critical ones involve improving the categorical response prediction rate based on extracted features. In spite of this, it is noted that most of the time from the entire cycle of multi-class machine modeling for sign language recognition tasks is spent on data preparation, including collection, filtering, analysis, and ...2025-01-09 -
A Real-Time Dynamic Gesture Variability Recognition Method Based on Convolutional Neural Networks
(Applied Sciences, 2023)Among the many problems in machine learning, the most critical ones involve improving the categorical response prediction rate based on extracted features. In spite of this, it is noted that most of the time from the entire cycle of multi-class machine modeling for sign language recognition tasks is spent on data preparation, including collection, filtering, analysis, and ...2025-01-09 -
A ROOT-based program for analysing data on T-odd asymmetry in the neutron-induced fission of heavy nuclei
(Eurasian Journal of Physics and Functional Materials, 2020)This paper presents a ROOT based program that allows processing the data from experiments on the ROT-asymmetry in the angular distribution of fission products and present the results of the experiment in a convenient and visual form. The program can work with huge data sets and detect very subtle effects. The algorithm used by the program is given in this work. The overall ...2025-01-09 -
A study of the K+ → π0e+νγ decay
(Journal of High Energy Physics, 2023)The NA62 collaboration., Cortina Gil, E., Kleimenova, A. et al. A study of the K+ → π0e+νγ decay. J. High Energ. Phys. 2023, 40 (2023). https://doi.org/10.1007/JHEP09(2023)0402025-01-21 -
A study of the K+→π0e+νγ decay
(Journal of High Energy Physics, 2023)A sample of 1.3×105 K+→π0e+νγ candidates with less than 1% background was collected by the NA62 experiment at the CERN SPS in 2017-2018. Branching fraction measurements are obtained at percent relative precision in three restricted kinematic regions, improving on existing results by a factor larger than two. An asymmetry, possibly related to T-violation, is investigated with no ...2025-01-09