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A note on the hyperbolic-parabolic identification problem with nonlocal conditions

AIP Conference Proceedings 2021年第1期2334卷

作者： Maksat Ashyraliyev Maral Ashyralyyeva 1Department of Software Engineering Bahcesehir University 34353 Istanbul Turkey 2Department of Applied Mathematics and Informatics Magtymguly Turkmen State University 744000 Ashgabat Turkmenistan

In the present paper, we study a source identification problem for hyperbolic-parabolic equation with nonlocal conditions. The stability estimates for the solution of this source identification problem are established. Furthermore, we construct the second order of accuracy difference scheme for the approximate solution of the problem under consideration. The stability estimates for the solution of this difference scheme are presented.

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Conduction of a Laboratory Experiment with the Goal of Researching Submerged Flow Peculiarities

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IOP Conference Series: Earth and Environmental Science 2022年第4期988卷

作者： S R Kildibaeva I K Gimaltdinov E I Kharisov Applied Informatics and Programming Department Sterlitamak branch of Bashkir state University 49 Lenin avenue Sterlitamak Republic of Bashkortostan Russia Physics Department Ufa State Oil Technical University 1 Cosmonauts street Ufa Republic of Bashkortostan Russia The Academy of Sciences of Bashkortostan 15 Kirova street Ufa Republic of Bashkortostan Russia

In connection with the decreasing hydrocarbon reserves on land, the interest of researchers in new alternative methods of hydrocarbon production is growing. One of the actively developing areas is the production of hydrocarbons from deep-water deposits, in connection with which the share of developed deposits in the water area of the World Ocean is growing every year. However, this production method is not completely safe, since any damage to the production structure can lead to leakage of hydrocarbons. In this case, hydrocarbons are distributed in the form of a submerged jet. Predicting the behavior of submerged jets, calculating their trajectories and thermophysical parameters is important in the elimination of leakage. The article discusses an experimental study of a submerged jet. The results of the experiment will make it possible to verify the mathematical model describing the propagation of a submerged jet. The experiment was carried out to study the trajectory of the jet and its temperature. This paper presents the results on the analysis of the jet trajectory. In the experiment, gasoline or diesel fuel was used as a liquid, air was used as a gas. The work shows a diagram of the experimental setup, describes the process of the experiment, and also shows a photograph of the experiment and a comparison with the results of calculations.

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Mathematical model of the submerged jet for the cases of man-made spills 16

Mathematical model of the submerged jet for the cases of man...

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16th All-Russian Seminar with International Participation on Dynamics of Multiphase Media, DMM 2019

作者： Kildibaeva, S.R. Gimaltdinov, I.K. Kildibaeva, G.R. Applied Informatics and Programming Department Sterlitamak Branch of Bashkir State University 49 Lenin avenue Sterlitamak Republic of Bashkortostan Russia Physics Department Ufa State Oil Technical University 1 Cosmonauts street Ufa Republic of Bashkortostan Russia Academy of Sciences of Bashkortostan 15 Kirova street Ufa Republic of Bashkortostan Russia

The paper considers a mathematical model of the spread of a multiphase submerged jet, the flow of which is associated with a well damage during the development of a field or pipeline during oil transport. The jet consists of oil droplets and gas bubbles, as well as water involved into the jet. The case is considered when the environmental conditions correspond to the conditions of a stable hydrate existence, because a hydrate shell begins to form and the gas bubble turns into a hydrate on the surface of the bubbles. The integral Lagrangian control volume method is used to describe the jet spread process. The thermo-physical characteristics of a multiphase submerged jet, depending on the vertical coordinate, as well as the trajectory of the jet, are obtained. © 2019 IOP Publishing Ltd.

关键词： Gas hydrates

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Mathematical model of a device for the elimination of deep-water leaks accompanied by hydrate formation

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AIP Conference Proceedings 2022年第1期2467卷

作者： S. R. Kildibaeva I. K. Gimaltdinov A. S. Chiglintseva 1Applied Informatics and Programming Department Sterlitamak branch of Bashkir state University 49 Lenin avenue Sterlitamak Republic of Bashkortostan Russia 2Physics Department Ufa State Oil Technical University 1 Cosmonauts street Ufa Republic of Bashkortostan Russia 3The Academy of Sciences of Bashkortostan 15 Kirova street Ufa Republic of Bashkortostan Russia

Due to possible hydrocarbon leaks that can occur when a well is damaged during deep-sea offshore oil production, it is important to study methods for eliminating leaks. The article deals with the mathematical model of the device "dome-separator", which is used to eliminate deep-water leaks. The article also discusses the possibility of using and advantages of such a device. The paper presents a scheme of the device, a mathematical model that contains the basic equations. In the process of the computational experiments, the thermophysical characteristics of hydrocarbons accumulated inside the dome were determined, and the process of accumulation of hydrocarbons inside the dome was modeled.

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Introduction to the theory of stochastic processes: Studying the basic concepts

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AIP Conference Proceedings 2022年第1期2647卷

作者： Elena Kuznetsova Natalia Zhbanova Tatyana Fomina Faina Golovaneva Tatyana Glushakova 1Department of Automation and Informatics Lipetsk State Technical University Lipetsk Russia 2Department of Mathematics and Physics Lipetsk State Pedagogical University named after P. P. Semenov-Tyan-Shansky Lipetsk Russia 3Department of Partial Differential Equation Studies and Relativity Theory Voronezh State University Voronezh Russia 4Department of Computational Mathematics and Applied Information Technologies Voronezh State University Voronezh Russia

Models of stochastic processes describe many phenomena in nature, technology, and economics. However, STEM and economics students usually do not have enough time to study this topic. When developing a course on stochastic processes, a teacher faces some challenges. The task is to present sophisticated educational material, combining the mathematical severity of presentation and ease of understanding. Throughout several lessons, students should get a holistic understanding of the subject so that they can correctly and meaningfully apply models of stochastic processes in the field of their professional activities. The complicated nature of stochastic processes models requires understanding their multidimensionality, facilitated by various representation methods: formulas, tables, graphs, and computer simulation. The article discusses applying these techniques on the example of the formation of the concepts "stochastic process" "mathematical expectation and variance of a stochastic process."

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Improved regularity criterion for the 3D Navier-Stokes equations via the gradient of one velocity component

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AIP Conference Proceedings 2022年第1期2425卷

作者： Ahmad Alghamdi Sadek Gala Maria Alessandra Ragusa 1Department of Mathematical Science Faculty of Applied Science Umm Alqura University P. O. Box 14035 Makkah 21955 Saudi Arabia 2Department of Mathematics Faculty of Science & Informatics University of Mostaganem P. O. Box 270 Mostaganem 27000 Algeria and University of Catania Department of Mathematics and Computer Sciences Catania Italy 3University of Catania Department of Mathematics and Computer Sciences Catania Italy and RUDN University Moscow Russia

In this paper, we study regularity of weak solutions to the incompressible Navier-Stokes equations in ℝ3 15; (0, T ). The main goal is to establish the regularity criterion via the gradient of one velocity componen...

In this paper, we study regularity of weak solutions to the incompressible Navier-Stokes equations in ℝ3 × (0, T ). The main goal is to establish the regularity criterion via the gradient of one velocity component in some multiplier spaces.

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Open and Sustainable AI: challenges, opportunities and the road ahead in the life sciences

arXiv

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arXiv 2025年

作者： Farrell, Gavin Adamidi, Eleni Buono, Rafael Andrade Anton, Mihail Attafi, Omar Abdelghani Gutierrez, Salvador Capella Capriotti, Emidio Castro, Leyla Jael Cirillo, Davide Crossman, Lisa Dessimoz, Christophe Dimopoulos, Alexandros Fernández-Díaz, Raúl Fragkouli, Styliani-Christina Goble, Carole Gu, Wei Hancock, John M. Khanteymoori, Alireza Lenaerts, Tom Liberante, Fabio G. Maccallum, Peter Monzon, Alexander Miguel Palmblad, Magnus Poveda, Lucy Radulescu, Ovidiu Shields, Denis C. Sufi, Shoaib Vergoulis, Thanasis Psomopoulos, Fotis Tosatto, Silvio C.E. Institute of Applied Biosciences Centre for Research and Technology Hellas Thessaloniki Greece 1Department of Biomedical Sciences University of Padova Padova35121 Italy Department of Biomedical Sciences University of Padova Via Ugo Bassi 58/B Padova35131 Italy Athena Research & Innovation Center Aigialias & Chalepa Marousi15125 Greece VIB Data Core VIB.AI Center for AI & Computational Biology Technologiepark-Zwijnaarde 75 Ghent9052 Belgium ELIXIR Europe Hub EMBL-EBI South Building Wellcome Genome HinxtonCB10 1SD United Kingdom Plaça Eusebi Güell 1-3 Barcelona08034 Spain Department of Pharmacy and Biotechnology University of Bologna Bologna40126 Italy Computational Genomics Platform IRCCS University Hospital of Bologna Bologna40138 Italy ZB MED Information Centre for Life Sciences Gleueler Straße 60 Cologne50931 Germany SequenceAnalysis.co.uk United Kingdom University of East Anglia Research Park NorwichNR4 7TJ United Kingdom Department of Computational Biology University of Lausanne Genopode 2024.3 Lausanne1015 Switzerland Swiss Institute of Bioinformatics Amphipôle Quartier UNIL-Sorge Lausanne1015 Switzerland Institute for Fundamental Biomedical Science Biomedical Sciences Research Center Alexander Fleming Vari Greece Department of Informatics & Telematics School of Digital Technology Harokopio University Athens Greece School of Medicine University College Dublin Belfield Dublin 4 Ireland Conway Institute of Biomolecular and Biomedical Research University College Dublin Belfield Dublin 4 Ireland IBM Research Dublin DublinD15 HN66 Ireland Institute of Applied Biosciences Centre for Research and Technology Hellas Thessaloniki57001 Greece Department of Biology National & Kapodistrian University of Athens Athens15772 Greece Department of Computer Science University of Manchester Oxford Road ManchesterM19 3PL United Kingdom Luxembourg National Data Service 6 avenue des Hauts-Fourneaux Esch-sur-AlzetteL-4362 Luxembourg Insti

Artificial intelligence (AI) has recently seen transformative breakthroughs in the life sciences, expanding possibilities for researchers to interpret biological information at an unprecedented capacity, with novel applications and advances being made almost daily. In order to maximise return on the growing investments in AI-based life science research and accelerate this progress, it has become urgent to address the exacerbation of long-standing research challenges arising from the rapid adoption of AI methods. We review the increased erosion of trust in AI research outputs, driven by the issues of poor reusability and reproducibility, and highlight their consequent impact on environmental sustainability. Furthermore, we discuss the fragmented components of the AI ecosystem and lack of guiding pathways to best support Open and Sustainable AI (OSAI) model development. In response, this perspective introduces a practical set of OSAI recommendations directly mapped to over 300 components of the AI ecosystem. Our work connects researchers with relevant AI resources, facilitating the implementation of sustainable, reusable and transparent AI. Built upon life science community consensus and aligned to existing efforts, the outputs of this perspective are designed to aid the future development of policy and structured pathways for guiding AI *** Codes 92 © 2025, CC BY-NC-ND.

关键词： Reusability

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Modeling of hybrid DC-DC converter for autonomous power supply

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AIP Conference Proceedings 2021年第1期2333卷

作者： Nikolay Hinov Gergana Vacheva Bogdan Gilev 1Department of Power Electronics Faculty of Electronic Engineering and Technologies Technical University of Sofia 8 Kliment Ohridski blvd. 1000 Sofia Bulgaria 2Department of Mathematical Modelling and Numerical Methods Faculty of Applied Mathematics and Informatics Technical University of Sofia 8 Kliment Ohridski blvd. 1000 Sofia Bulgaria

In the current research a model simulating a system consisting of DC-DC converter with fuel cell and supercapacitor is presented. The model is realized in MATLAB/Simulink environment. For energy storage device a supercapacitor is used. On the base of the developed model and the control system of the energy flows, a researches related with the necessary value of the supercapacitor with the basic purpose provision of the aforetime set load profile are realized. Another essential problem of the control system of the power converter is to provide operation mode with maximal efficiency of the power source – fuel cell. This research is useful for determination of the optimal value of the energy storage device, which has significantly meaning for economically efficiency of the system for decentralized production of the electrical energy.

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Formation of gas hydroxide of sulfur dioxide at liquid sulfur dioxide injection in a porous medium saturated with methane and water

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AIP Conference Proceedings 2019年第1期2141卷

作者： M. K. Khasanov S. R. Kildibaeva 1Department of Applied Informatics and Programming Faculty of mathematics and information technology Sterlitamak branch of Bashkir state University Lenin avenue 49 Sterlitamak 453100 Republic of Bashkortostan Russia

A mathematical model of injection of liquid sulfur dioxide into a porous medium saturated with water and methane, accompanied by the formation of SO2 gas hydrate on the frontal surface is presented. The dependences of the temperature and the coordinates for the formation front of sulfur dioxide gas hydrate on the pressure of the injection and the initial pressure of the layer are explored. It is established that at sufficiently high injection pressure values and the initial temperature of the layer, as well as the low values of the layer’s initial pressure, the temperature of the porous medium on the boundary of gas hydrate formation of sulfur dioxide may rise above the decomposition’s equilibrium temperature of the gas hydrate of sulfur dioxide. This corresponds to the appearance of a zone in a porous medium saturated with a mixture of water, sulfur dioxide and its gas hydrate, being in a state of phase equilibrium.

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Fuzzy request handler for Mongo QL derived from SQL

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Journal of Physics: Conference Series 2020年第1期1479卷

作者： I F Astachova N K Samoilov E I Kiseleva Department of Applied Mathematics Informatics and Mechanics Voronezh State University 1 University Square Voronezh 394018 Russia Department of Programming and Information Technologies Voronezh State University Voronezh Russia Department of Pedagogy and Methods of Preschool and Primary Education Psychological and Pedagogical Faculty Voronezh State Pedagogical University 86 Lenin street Voronezh Russia

Relational DBMS are often used to store fuzzy values, but problems arise with putting such data in a tabular form. Moreover, there appears a problem of storing both the crisp and fuzzy data related to one subject domain in one column of a relational table. This article considers the mechanism of storing crisp and fuzzy values and linguistic variables in the document-oriented Mongo DBMS. The data are stored in the collection as GeoJSON geometry; different geometries are used for different data options. The possibility of storing crisp scalar values, crisp value sets, crisp value intervals and fuzzy values in the collection documents is described. For data processing by means of SQL queries, the context-free grammar of the SQL subset is described, according to which lexer and parser are generated. In order to form the structure of an abstract syntactic tree, a corresponding object model has been implemented. A translator application has been developed, which allows converting SQL queries related to the crisp and fuzzy data into Mongo QL queries. The algorithm of fuzzy queries translation process is suggested; the geometrical interpretation of data comparison operations is described. The examples show the options of fuzzy comparison operations for different value options.

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