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Electronic Engineering (ICEEM), International Conference on

作者： A. K. Abu-Nab A. F. Abu-Bakr Zain AbuShaeer Department of Mathematics and Computer Science Faculty of Science Menoufia University Shebin 32511 Egypt Phystech School of Applied Mathematics and Informatics Moscow Institute of Physics and Technology Moscow Russia Department of Mathematics and Computer Science Faculty of Science Menoufia University Shebin El-Koom Egypt Department of Basic Science Higher Institute of Engineering and Technology Kafrelsheikh Egypt

This work presents a numerical investigation of acoustic cavitation in Newtonian fluid based on frequency ultrasound. The model of ultrasonic cavitation dynamics is formulated by a modified Rayleigh-Plesset equation and an acoustic pressure equation. The exponential B-Spline collection method was employed to obtain the numerical solutions of the given cavitation bubble model, considering the effect of acoustic pressure. The behaviour of the cavitation microbubbles' radius and the internal pressure of acoustic cavitation were examined at different values of frequencies. The obtained results reveal the importance of frequencies in ultrasound, which play a vital role in changing the behaviour of cavitation bubbles.

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Dimensionality reduction using pseudo-Boolean polynomials for cluster analysis

arXiv

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arXiv 2023年

作者： Chikake, Tendai Mapungwana Goldengorin, Boris Department of Discrete Mathematics Phystech School of Applied Mathematics and Informatics Moscow Institute of Physics and Technology Institutsky lane 9 Moscow region Dolgoprudny141700 Russia Department of Mathematics New Uzbekistan University Tashkent100007 Uzbekistan The Scientific and Educational Mathematical Center Sofia Kovalevskaya Northwestern Center for Mathematical Research Pskov State University Sovetskaya Ulitsa 21 Pskovskaya oblast Pskov180000 Russia Department of Discrete Mathematics Moscow Institute of Physics and Technology Russia

We introduce usage of a reduction property of penalty-based formulation of pseudo-Boolean polynomials as a mechanism for invariant dimensionality reduction in cluster analysis processes. In our experiments, we show that multidimensional data, like 4-dimensional Iris Flower dataset can be reduced to 2-dimensional space while the 30-dimensional Wisconsin Diagnostic Breast Cancer (WDBC) dataset can be reduced to 3-dimensional space, and by searching lines or planes that lie between reduced samples we can extract clusters in a linear and unbiased manner with competitive accuracies, reproducibility and clear *** Codes 62H30 (Primary) © 2023, CC BY-NC-ND.

关键词： Cluster analysis

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Pseudo-Boolean Polynomials Approach To Edge Detection And Image Segmentation

arXiv

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arXiv 2023年

作者： Chikake, Tendai Mapungwana Goldengorin, Boris Samosyuk, Alexey Department of Discrete Mathematics Phystech School of Applied Mathematics and Informatics Moscow Institute of Physics and Technology Institutsky lane 9 Moscow region Dolgoprudny141700 Russia Department of Mathematics New Uzbekistan University Tashkent100007 Uzbekistan The Scientific and Educational Mathematical Center "Sofia Kovalevskaya Northwestern Center for Mathematical Research" Pskov State University Sovetskaya Ulitsa 21 Pskovskaya oblast Pskov180000 Russia Department of Discrete Mathematics Moscow Institute of Physics and Technology Russia

We introduce a deterministic approach to edge detection and image segmentation by formulating pseudo-Boolean polynomials on image patches. The approach works by applying a binary classification of blob and edge regions in an image based on the degrees of pseudo-Boolean polynomials calculated on patches extracted from the provided image. We test our method on simple images containing primitive shapes of constant and contrasting colour and establish the feasibility before applying it to complex instances like aerial landscape images. The proposed method is based on the exploitation of the reduction, polynomial degree, and equivalence properties of penalty-based pseudo-Boolean *** Codes 68R05 (Primary) 68U05 (Secondary) © 2023, CC BY-NC-ND.

关键词： Image segmentation

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QuITO v.2: Trajectory Optimization with Uniform Error Guarantees under Path Constraints

arXiv

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arXiv 2024年

作者： Ganguly, Siddhartha D’Silva, Rihan Aaron Chatterjee, Debasish Systems and Control Engineering Indian Institute of Technology Mumbai400076 India Applied Mathematics and Physics Graduate School of Informatics Kyoto University Japan Department of Aerospace Engineering University of Illinois at Urbana-Champaign United States

This article introduces a new transcription, change point localization, and mesh refinement scheme for direct optimization-based solutions and for uniform approximation of optimal control trajectories associated with a class of nonlinear constrained optimal control problems (OCPs). The base transcription algorithm for which we establish the refinement algorithm is a direct multiple shooting technique — QuITO v.2 (Quasi-Interpolation based Trajectory Optimization). The mesh refinement technique consists of two steps — localization of certain irregular regions in an optimal control trajectory via wavelets, followed by a targeted ℎ-refinement approach around such regions of irregularity. Theoretical approximation guarantees on uniform grids are presented for optimal controls with certain regularity properties along with guarantees of localization of change points by wavelet transform. Numerical illustrations are provided for control profiles involving discontinuities to show the effectiveness of the localization and refinement strategy. We also announce, and make freely available, a new software package based on QuITO v.2 along with all its functionalities for completeness. The package is available at: https://***/chatterjee-d/***. Copyright © 2024, The Authors. All rights reserved.

关键词： Mesh generation

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Towards a Laser-Induced Microbubble during Lithotripsy Process in Soft Tissue

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Bulletin of the Russian Academy of Sciences: physics 2022年第1-Sup期86卷 S1-S7页

作者： Abu-Bakr, A.F. Abu-Nab, A.K. Theoretical and Mathematical Physics Department Institute of Natural Sciences and Mathematics Ural Federal University Ekaterinburg620083 Russia Department of Mathematics and Computer Science Faculty of Science Menoufia University Shebin El-Koom32511 Egypt Phystech School of Applied Mathematics and Informatics Moscow Institute of Physics and Technology Dolgoprudny141700 Russia

Abstract: The present paper proposes the theoretical study and mathematical approach of laser induced cavitation microbubble during lithotripsy process in soft tissue. The mathematical model is constructed via the potential function and Lagrangian equation of radial and translational dynamics of microbubble. The given model of laser-induced cavitation microbubble (as like Rayleigh–Plesset equation) is analytically solved and investigated via Plesset–Zwick method to investigate the behaviour of laser-induced cavitation microbubble and energy produced by laser-induced cavitation microbubble during lithotripsy in soft tissue. From our results, we get the energy produced by laser-induced cavitation bubble increases with increasing of the time and decreasing of the parameter Kexp which is calculated experimentally. The present mathematical approach and its analytical results are satisfied by comparing with the published experimentally results. © 2022, Allerton Press, Inc.

关键词： Tissue

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Intelligent Robotic Motion Copying System LevshAi for Neurosurgical Endovascular Operations with Haptic Feedback and Preoperative Personalized Simulation

Intelligent Robotic Motion Copying System LevshAi for Neuros...

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IEEE International Conference on Cyborg and Bionic Systems (CBS)

作者： Ivan Menshikov Alexandra Bernadotte Neurosputnik LLC Moscow Russia Department of Control and Applied Mathematics Moscow Institute of Physics and Technology (MIPT) Dolgoprudny Russia Department of Information Technologies and Computer Sciences The National University of Science and Technology MISIS Moscow Russia Faculty of Computer Sciences Higher School of Economics Moscow Russia Faculty of Mechanics and Mathematics Moscow State University Moscow Russia

Abstract The paper presented an intelligent robotic motion copying system LevshAi for remote neurosurgical endovascular operations. The LevshAi system follows the specialization paradigm. The system is oriented to a particular class of operations, and, at the same time, it is most convenient for *** system has intelligent haptic feedback identical to what a surgeon would experience in an operating room performing classical endovascular surgery on cerebral *** LevshAi system makes extensive use of artificial intelligence. For example, artificial intelligence is used to select the best surgical tactics, correct the surgeon’s tremor, identify critical situations during the operation, and simulate the patient’s vessels in 3 *** LevshAi system is equipped with a training personalized intelligent vascular simulator. The personalized intelligent vascular simulator allows surgeons to practice on the 3D simulator and choose the best tactics before the operation.

关键词： Robot motion Training Three-dimensional displays Neurosurgery Haptic interfaces Artificial intelligence Man-machine systems

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Multi-Agent Economic Modeling Automation Technologies 9

Multi-Agent Economic Modeling Automation Technologies

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9th International Conference on Control, Decision and Information Technologies, CoDIT 2023

作者： Zhukova, Aleksandra A. Pilnik, Nikolai P. Kamenev, Ivan G. Iusup-Akhunov, Batyrzhan B. Federal Research Center 'Computer Science and Control' of the Russian Academy of Sciences Department of Mathematical Modelling in Economic Social and Ecological Systems Vavilov st. 44 building 2 Moscow119333 Russia Federal Research Center 'Computer Science and Control' of the Russian Academy of Sciences Department of Mathematical Modelling of Economic Systems Vavilov st. 44 building 2 Moscow119333 Russia Hse University Faculty of Economic Sciences Department of Applied Economics Pokrovsky Bulvar 11 Moscow109028 Russia Fsbeihe Bauman Moscow State Technical University Department of Fundamental Sciences-11 2nd Baumanskaya street 5-1 Moscow05005 Russia The Phystech School of Applied Mathematics and Informatics Moscow Institute of Physics and Technology 9 Institutskiy per. Moscow Region Dolgoprudny141701 Russia

ISBN: (纸本)9798350311402

Complex economic models often describe the agent's decisions, i.e. choice of some controlled variables in accordance with criteria set by agents. Unlike purely statistical ones, agent-based models allow to describe processes with different modes, in which the agent's behavior changes quali-tatively when the environment (including the actions of other agents) change. The practical use of mathematical models of complex systems with a number of interacting agents is limited by complexity of their construction and possible errors when dealing with multitude of expressions. Computer tools, such as the 'Ecomod' system discussed in the article, can substantially reduce the time spent on model creation and processing, and help to coordinate the work of several researchers on the model. © 2023 IEEE.

关键词： Autonomous agents

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Beyond a cluster-Mott state in the breathing kagome lattice of LiZn2Mo3O8

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Physical Review B 2025年第8期111卷 085124-085124页

作者： S. V. Streltsov D. Takegami R. Nakamura P. P. Kovaleva A. I. Poteryaev S. A. Nikolaev H.-H. Xu Y. Sui M. Yoshimura Institute of Metal Physics S. Kovalevskoy St. 18 Ekaterinburg 620990 Russia Department of Theoretical Physics and Applied Mathematics Ural Federal University Mira St. 19 Ekaterinburg 620002 Russia Department of Applied Physics Waseda University Shinjuku Tokyo 169-8555 Japan Skolkovo Institute of Science and Technology 30 Bolshoy Boulevard bld.1 Moscow 121205 Russia Department of Materials Engineering Science The University of Osaka Toyonaka 560-8531 Japan School of Physics Harbin Institute of Technology Harbin 150001 China Laboratory for Space Environment and Physical Sciences Harbin Institute of Technology Harbin 150001 China National Synchrotron Radiation Research Center Hsinchu 30076 Taiwan

Searching of materials, where a long-range magnetic order is suppressed by quantum fluctuations and a quantum spin liquid state realizes, is one of the central problems in the modern condensed matter physics. A possible candidate for such a state on the breathing Kagome lattice LiZn2Mo3O8 is scrutinized by hard x-ray photoemission spectroscopy (HAXPES), cluster dynamical mean-field theory (cDMFT), and exact diagonalization of an extended Hubbard model. The Mo 3d core level HAXPES peaks of LiZn2Mo3O8 are accompanied by shoulders on their lower energy side which are absent in Zn2Mo3O8. The shoulder peaks observed only in LiZn2Mo3O8 indicate Mo3+ and Mo4+ charge fluctuations. The cDMFT calculations not only describe experimental valence-band HAXPES spectra demonstrating importance of the correlation effects, but also feature nonlocal spin fluctuations. Exact diagonalization taking into account intertrimer Coulomb repulsion demonstrates long-range charge fluctuations consistent with HAXPES results.

关键词： Hubbard model

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Blockchain Methodology for Smart Academic Environment in Russia 8th

Blockchain Methodology for Smart Academic Environment in Rus...

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8th International KES Conference on Smart Education and e-Learning, KES-SEEL 2021

作者： Sherstobitova, Anna A. Kaziev, Valery M. Krayneva, Raisa K. Gudkova, Svetlana A. Filippova, Olga A. Gudkov, Anton A. Togliatti State University Togliatti Russia Department of Applied Mathematics and Informatics Institute of Physics and Mathematics Kabardino-Balkar State University Nalchik Russia Financial University Under the Government of the Russian Federation Moscow Russia NetCracker Technology Corporation Togliatti Russia

ISBN: (纸本)9789811628337

The cryptocurrency market is only at the beginning of its evolutionary cycle in Russia. Cryptocurrencies are volatile and dependent on many factors. The problem of investing in cryptocurrency exchanges is relevant. The problem of developing and liberalizing the financial system to self-regulatory is important. Society and education need skills of a systems analysis for regulating the cryptocurrency market. In particular analysis of the possibilities of interactions such as P2P (Person-to-Person), P2B (Person-to-Business), G2B (Government-to-Business) are required. The use of blockchain technology in education is also an urgent problem. There are possibilities for liberalizing the educational system especially smart-education. The corresponding system analysis is represented in the study, a model of adaptive cryptocurrency selection and valuation of cryptocurrency reserves are proposed. The task of improving the performance of blockchain transactions by optimizing hash addressing is also considered. The market is seen as an evolving structure and analyzed for its sustainability. It can become the basis for system analytics and research on models of the cryptocurrency market evolution and development for smart education. © 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Blockchain

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Vector photon-magnon-phonon coherence in a polarized microwave driven cavity magnomechanical system

引用

Physical Review B 2024年第6期109卷 064412-064412页

作者： Jia-Xin Peng Akash Kundu Zeng-Xing Liu Atta ur Rahman Naeem Akhtar M. Asjad Quantum Institute for Light and Atoms State Key Laboratory of Precision Spectroscopy Department of Physics School of Physics and Electronic Science East China Normal University Shanghai 200062 China Institute of Theoretical and Applied Informatics Polish Academy of Sciences Gliwice Poland Joint Doctoral School Silesian University of Technology Gliwice Poland School of Electronic Engineering & Intelligentization Dongguan University of Technology Dongguan Guangdong 523808 China School of Physical Sciences University of Chinese Academy of Sciences Yuquan Road 19A Beijing 100049 China Department of Physics Jiangsu University Zhenjiang 212013 China Mathematics Department Khalifa University of Science and Technology Abu Dhabi 127788 United Arab Emirates

Polarization is a significant vector property of the light field that has been widely applied in various fields of modern optical sciences. In this paper, we introduce the concept of polarization into the cavity-magnomechanical system as a platform for studying quantum coherence in the vector regime. Interestingly, we find that quantum coherence can be flexibly and continuously controlled by adjusting the polarization angle of the optical polarizer and implementing coherent switching and role reversal between the two types of photon-magnon-phonon coherences for the transverse electric and transverse magnetic modes. More importantly, this coherent conversion characteristic of quantum coherence exhibits strong robustness to environmental temperature and dissipation channels. In practice, this ability to switch macroscopic quantum coherence would provide another degree of freedom for quantum information science based on the cavity-magnomechanical system. In addition, the experimental feasibility of the polarization-controlled quantum coherence is evaluated, and the strategy for detecting vector quantum coherence is discussed briefly.

关键词： Cavity quantum electrodynamics Magnetism Magnons Quantum coherence & coherence measures Quantum correlations, foundations & formalism Polarization

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