https://elib.bsu.by:443/handle/123456789/6009 2026-04-20T06:33:13Z https://elib.bsu.by:443/handle/123456789/324726 Заглавие документа: Optimizing mixing in the Rudner-Levitov lattice Авторы: Peshko, I.; Antsukh, M.; Novitsky, D.; Mogilevtsev, D. Аннотация: Here we discuss optimization of mixing in finite linear and circular Rudner-Levitov lattices (Su–Schrieffer–Heeger lattices with a dissipative sublattice). We show that presence of exceptional points in the systems spectra can lead to drastically different scaling of the mixing time with the number of lattice nodes, varying from quadratic to the logarithmic one. When operating in the region between the maximal and minimal exceptional points, it is always possible to restore the logarithmic scaling by choosing the initial state of the chain. Moreover, for the same localized initial state and values of parameters, a longer lattice might mix much faster than the shorter one. Also we demonstrate that an asymmetric circular Rudner-Levitov lattice can preserve logarithmic scaling of the mixing time for an arbitrary large number of lattice nodes. 2023-01-01T00:00:00Z https://elib.bsu.by:443/handle/123456789/324391 Заглавие документа: Aircraft Detection Approach Based on YOLOv9 for High-Resolution Remote Sensing Авторы: Saetchnikov, Ivan; Skakun, Victor; Tcherniavskaia, Elina Аннотация: The rapid advancements in cube and nano satellites have made hight quality remote sensing images acesible leading to crucial objectrecognition tasks with exensive application range 2024-01-01T00:00:00Z https://elib.bsu.by:443/handle/123456789/324385 Заглавие документа: Two-photon polymerization of optical microresonators for precise pH sensing Авторы: Tcherniavskaia, E. A.; Saetchnikov, A. V. Аннотация: Water monitoring, environmental analysis, cell culture stability, and biomedical applications require precise pH control. Traditional methods, such as pH strips and meters, have limitations: pH strips lack precision, whereas electrochemical meters, although more accurate, are fragile, prone to drift, and unsuitable for small volumes. In this paper, we propose a method for the optical detection of pH based on a multiplexed sensor with 4D microcavities fabricated via two-photon polymerization. This approach employs pH-triggered reversible variations in microresonator geometry and integrates hundreds of dual optically coupled 4D microcavities to achieve the detection limit of 0.003 pH units. The proposed solution is a clear example of the use-case-oriented application of two-photon polymerized structures of high optical quality. Owing to the benefits of the multiplexed imaging platform, the dual 4D microresonators can be integrated with other microresonator types for pH-corrected biochemical studies. 2024-01-01T00:00:00Z https://elib.bsu.by:443/handle/123456789/324376 Заглавие документа: SYSTEMATIZATION OF β + DECAYING ATOMIC NUCLEI: INTERRELATION BETWEEN HALF-LIFE, MASS, ENERGY AND SIZE Авторы: Kholmetskii, A.L.; Yarman, T.; Nimet, Zaim Аннотация: We propose a novel systematization of positron-decaying atomic nuclei, for which we first focus on determining the kinetic energy of the most energetic positron at the moment it is emitted from the nucleus. We find that this energy is inversely proportional to the number of nucleons A composing the nucleus. Further on, for A>60, we figure out that the measured kinetic energy of positrons detected in the laboratory turns out to be substantially less than what one would classically expect based on the electrical interaction between the nucleus and the positron from the moment the latter gets emitted. We particularly disclose that the initial kinetic energy of the positron escaping from a nucleus can be formally negative at A>60, which indicates that the positron in question is not released from the classically conceived nuclear surface, but from much above the said surface. This requires the need of involving the quantum mechanical properties of the system composed of “the nucleus and the positron”. Finally, we show how the half-life, mass, kinetic energy and size involved in positron decay are interrelated in a way already established through Yarman’s Approach (YA) for polyatomic molecules and α-decaying nuclei. 2024-01-01T00:00:00Z