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Risk factors, prevention and screening of colorectal cancer: A rising problem

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World Journal of Gastroenterology 2025年第5期31卷 117-123页

作者： Vladislav V Tsukanov Alexander V Vasyutin Julia L Tonkikh Clinical Department of The Digestive System Pathology of Adults and Children Federal Research Center“Krasnoyarsk Science Center”of the Siberian Branch of the Russian Academy of SciencesScientific Research Institute of Medical Problems of the NorthKrasnoyarsk 660022Russia

Colorectal cancer(CRC)is the third most commonly diagnosed cancer and the second leading cause of cancer death *** leading risk factors for CRC include male gender,age over 50,family history,obesity,tobacco smoking,alco-hol consumption,and unhealthy *** screening methods vary considerably between countries and depend on incidence,economic resources and healthcare *** aspects of screening include adherence,which can vary signi-ficantly across ethnic and socioeconomic *** concepts of CRC screening include pre-stratification of patients by identifying risk factors and then using fecal immunochemical test or guaiac-based fecal occult blood test and/or colono-scopy or radiologic imaging *** capabilities for CRC scree-ning are rapidly evolving and include stool DNA test,liquid biopsy,virtual colo-nography,and the use of artificial intelligence.A CRC prevention strategy should be comprehensive and include active patient education along with targeted imple-mentation of screening.

关键词： Colorectal cancer Screening Prevention Risk factors Colonoscopy Fecal immunochemical test Fecal occult blood test Stool DNA test Diet Lynch syndrome

Multi-Record Web Page Information Extraction From News Websites

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arXiv 2025年

作者： Kustenkov, Alexander Varlamov, Maksim Yatskov, Alexander Ivannikov Institute for System Programming Russian Academy of Sciences Moscow Russia Lomonosov Moscow State University Moscow Russia

In this paper, we focused on the problem of extracting information from web pages containing many records, a task of growing importance in the era of massive web data. Recently, the development of neural network methods has improved the quality of information extraction from web pages. Nevertheless, most of the research and datasets are aimed at studying detailed pages. This has left multi-record"list pages" relatively understudied, despite their widespread presence and practical significance. To address this gap, we created a large-scale, open-access dataset specifically designed for list pages. This is the first dataset for this task in the russian language. Our dataset contains 13,120 web pages with news lists, significantly exceeding existing datasets in both scale and complexity. Our dataset contains attributes of various types, including optional and multi-valued, providing a realistic representation of real-world list pages. These features make our dataset a valuable resource for studying information extraction from pages containing many records. Furthermore, we proposed our own multi-stage information extraction methods. In this work, we explore and demonstrate several strategies for applying MarkupLM to the specific challenges of multi-record web pages. Our experiments validate the advantages of our methods. By releasing our dataset to the public1, we aim to advance the field of information extraction from multi-record pages. © 2025, CC BY-NC-ND.

关键词： Data collection

Unitary transform diagonalizing the Confluent Hypergeometric kernel

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arXiv 2025年

作者： Gorbunov, Sergei M. Moscow Institute of Physics and Technology Moscow Region Dolgoprudny Russia Steklov Mathematical Institute of Russian Academy of Sciences Moscow Russia Institute for System Programming Russian Academy of Sciences Moscow Russia

We consider the image of the operator, inducing the determinantal point process with the confluent hypergeometric kernel. The space is described as the image of L2[0, 1] under a unitary transform, which generalizes the Fourier transform. For the derived transform we prove a counterpart of the Paley-Wiener theorem. We use the theorem to prove that the corresponding analogue of the Wiener-Hopf operator is a unitary equivalent of the usual Wiener-Hopf operator, which implies that it shares the same factorization properties and Widom’s trace formula. Finally, using the introduced transform we give explicit formulae for the hierarchical decomposition of the image of the operator, induced by the confluent hypergeometric *** Codes 46E22 (Primary) 33C15, 60G55, 47B35 (Secondary) Copyright © 2025, The Authors. All rights reserved.

关键词： Mathematical operators

A blockchain-oriented covert communication technology with controlled security level based on addressing confusion ciphertext

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Frontiers of Computer science 2025年第2期19卷 133-135页

作者： Lejun ZHANG Bo ZHANG Ran GUO Zhujun WANG Guopeng WANG Jing QIU Shen SU Yuan LIU Guangxia XU Zhihong TIAN Sergey GATAULLIN Cyberspace Institute Advanced Technology Guangzhou UniversityGuangzhou 510006China Research and Development Center for E-Learning Ministry of EducationBeijing 100039China College of Information Engineering Yangzhou UniversityYangzhou 225009China School Math and Computer Science Quanzhou Normal UniversityQuanzhou 362000China Pazhou Lab Guangzhou 510330China School of Physics and Materials Science Guangzhou UniversityGuangzhou 510006China Central Economic and Mathematics Institute Russian Academy of SciencesMoscow 117418Russia Industrial Programming Department MIREA-Russian Technological UniversityMoscow 119454Russia

1 Introduction Traditional covert communication[1]usually relies on centralized channels,which are efficient in transmission but susceptible to eavesdropping and attacks,leading to information ***,distributed methods also exist,such as peer-to-peer networks and distributed hash *** technology,which is decentralized,anonymous,non-tamperable and anti-attack,can be applied to covert communication to solve the problems of traditional methods and improve the quality of communication.

关键词： communication tables networks

Classifiers of the Functional State of Living systems Based on Voigt Model Optimization 2nd

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Classifiers of the Functional State of Living Systems Based ...

2nd International Conference on Applied Intelligence, ICAI 2024

作者： Al-kasasbeh, Riad Taha Filist, Sergey Shaqadan, Ashraf Shatalova, Olga Starkov, Evgeny Korenevskiy, Nikolay A. Al-Habahbeh, Osama M. Tarawneh, Emad Saleh Maksim, Ilyash Miroshnikova, Karina Miroshnikov, Andrey Aikeyeva, Altyn A. The University of Jordan Amman Jordan South-West State University Kursk Russia Zarqa University Zarqa Jordan Institute of System Programming of the Russian Academy of Sciences Moscow Russia Eurasian National University Astana Kazakhstan

ISBN: (纸本)9789819619061

A novel bioimpedance spectroscopy method is introduced;the proposed method can help in the development of objective and accessible criteria for disease assessment, in addition to evaluating the effectiveness of treatment methods. The proposed method can be utilized to develop criteria for conservative therapy options and surgical interventions in severe cases. The method employs a recurrent Voigt model to represent biomaterial segment impedance. For each biomaterial segment model, a Cole plot is drawn in a given frequency range. The model parameters allow the formation of descriptors for multimodal classifiers of the functional state of living systems and parameters of the model links. To confirm the validity of the classifier, a group of patients diagnosed with pneumonia have been tested. To obtain bioimpedance analysis data, an electrode belt was placed on the chest of each patient, and impedance diagrams corresponding to a certain combination of electrodes were determined. The quality indicators of various classifier models reached 78% and were above 62%. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： Diseases

Decentralised convex optimisation with probability-proportional-to-size quantization

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arXiv 2025年

作者： Pasechnyuk, D.A. Dvurechensky, P. Uribe, C.A. Gasnikov, A.V. Mohamed bin Zayed University of Artificial Intelligence United Arab Emirates Ivannikov Institute for System Programming the Russian Academy of Sciences Russia Weierstrass Institute for Applied Analysis and Stochastics Germany Rice University United States Moscow Institute of Physics and Technology Russia

Communication is one of the bottlenecks of distributed optimisation and learning. To overcome this bottleneck, we propose a novel quantization method that transforms a vector into a sample of components’ indices drawn from a categorical distribution with probabilities proportional to values at those components. Then, we propose a primal and a primal-dual accelerated stochastic gradient methods that use our proposed quantization, and derive their convergence rates in terms of probabilities of large deviations. We focus on affine-constrained convex optimisation and its application to decentralised distributed optimisation problems. To illustrate the work of our algorithm, we apply it to the decentralised computation of semi-discrete entropy regularized Wasserstein *** Codes 65K10 © 2025, CC BY.

关键词： Optimization algorithms

Amplified spontaneous emission and random laser generation in capillaries doped with rhodamine 6G–microspheres

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Applied Optics 2025年第12期64卷 3383-3390页

作者： Huihao He Paula Russell-Hill Werner J. Blau Ivan M. Kislyakov Nikolay N. Rosanov Ningning Dong Jun Wang Aerospace Laser Technology and System Department Wang Zhijiang Innovation Center for Laser Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 China School of Physics and the Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) Trinity College Dublin Dublin 2 Ireland Ioffe Institute Russian Academy of Science St. Petersburg 194021 Russia

Amplified spontaneous emission and random lasing were demonstrated in capillaries of different diameters doped with Rhodamine 6G and monodisperse polystyrene microspheres as the gain medium. The emission intensity was enhanced by adding polyvinyl pyrrolidone polymer to the solution. The degree of polarization of the lasing emission can be controlled by the state of pump polarization due to the anisotropic gain of the dye molecule. Lasing spectral widths were simulated with the time-dependent theory for random lasers and generally confirmed the experimentally measured values. Therefore, we present a new, to the best of our knowledge, way to modulate the characteristics of optofluidic random lasers and promote the ability to design random lasers.

关键词： Fiber lasers Laser applications Laser sources Nematic liquid crystals Plastic optical fibers Random lasers

TOWARDS NONLINEARITY. THE p-REGULARITY THEORY. APPLICATIONS AND DEVELOPMENTS.

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arXiv 2025年

作者： Bednarczuk, E. Brezhneva, O. Leśniewski, K. Prusińska, A. Tret’Yakov, A. Warsaw University of Technology Poland Department of Mathematics Miami University OxfordOH United States System Research Institute Polish Academy of Sciences Poland Faculty of Science University of Siedlce Poland Dorodnicyn Computing Center Federal Research Center "Computer Science and Control " Russian Academy of Sciences Moscow119333 Russia

We present recent advances in the analysis of nonlinear equations with singular operators and nonlinear optimization problems with constraints given by singular mappings. The results are obtained within the framework of p-regularity theory, which has developed successfully over the last forty years. We illustrate the theory with its applications to degenerate problems in various areas of mathematics. In particular, we address the problem of describing the tangent cone to the solution set of nonlinear equations in a singular case. The structure of p-factor operators is used to propose optimality conditions and construct numerical methods for solving degenerate nonlinear equations and optimization problems. The methods presented in the paper can be considered as the first numerical approaches targeting solutions of degenerate problems, such as the Van der Pol differential equation, boundary-value problems with a small parameter, partial differential equations where Poincaré’s method of small parameter fails, nonlinear degenerate dynamical systems, and others. There are various practical applications for the theory of p-regularity, including structural engineering, composite materials, and material design. For instance, the theory can be applied to analyze the behavior of materials with irregular or complex properties. By considering higher-order derivatives, it becomes possible to model and predict the response of materials to external forces, such as stress or temperature variations. In geophysics, the p-regularity theory can be utilized to analyze and interpret complex data obtained from seismic surveys, gravity measurements, or electromagnetic surveys. The theory also finds applications in the analysis of nonlinear differential equations arising in control systems, geometric and topological analysis, biomechanics, and many other fields. The theory offers a valuable approach to analyzing and understanding nonlinear phenomena in situations where classical regularity

关键词： Boundary value problems

Quasi-Hydrodynamic Approach for Simulating Internal Wave Attractors

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Mathematical Models and Computer Simulations 2022年第4期14卷 547-558页

作者： Ryazanov, D.A. Ivannikov Institute of System Programming Russian Academy of Sciences Moscow Russian Federation

Abstract: On the example of the problem of modeling wave attractors in a stratified fluid, the advantages of the quasi-hydrodynamic (QHDFoam) algorithm over the classical algorithm of operator splitting (PISO) are demonstrated. Both algorithms are implemented by the finite volume method based on the OpenFOAM open source software package. It is shown that the application of the PISO algorithm does not reproduce the dynamics of multiple reflection and focusing of internal waves in a stratified fluid during the interaction with the boundaries of the computational domain. The QHDFoam algorithm based on solving the regularized Navier–Stokes equations gives results close to the data of the high-order spectral-element method, the data of which are considered as the reference in this study. © 2022, Pleiades Publishing, Ltd.

关键词： internal waves Nek5000 OpenFOAM QHDFoam wave attractors