检索结果-内蒙古大学图书馆

Construction and Investigation of Exact Solutions with Free Boundary to a Nonlinear Heat Equation with Source

Siberian Advances in Mathematics 2020年第2期30卷 91-105页

作者： Kazakov, A.L. Matrosov Institute for System Dynamics and Control Theory Irkutsk 664033 Russian Federation

Abstract: The article is devoted to the construction and investigation of exact solutions with freeboundary to a second-order nonlinear parabolic equation. The solutions belong to the classes ofgeneralized self-similar and generalized traveling waves. Their construction is reduced to Cauchyproblems for second-order ordinary differential equations (ODE), for which we prove existence anduniqueness theorems for their solutions. A qualitative analysis of the ODE is carried out bypassing to a dynamical system and constructing and studying its phase portrait. In addition, wepresent geometric illustrations. © 2020, Allerton Press, Inc.

关键词： exact solution existence theorem nonlinear heat equation with source qualitative analysis of ordinary differential equations thermal wave

来源：评论

学校读者我要写书评

暂无评论

Construction techniques of Baikal microbiome research information-computational environment 1

Construction techniques of Baikal microbiome research inform...

引用

1st International Workshop on Advanced Information and Computation Technologies and systems, AICTS 2020

作者： Cherkashin, E.A. Shigarov, A.O. Matrosov Institute for System Dynamics and Control Theory Siberian Branch Russian Academy of Sciences Irkutsk Russia Irkutsk Scientific Center Siberian Branch Russian Academy of Sciences Irkutsk Russia

A toolset and model data sources for research and developing an environment for Next Generation Sequencing data processing are considered in the paper. The environment is constructed on the base of model transformations targeted to industrial grade systems allowing domain specialists to carry on the Next Generation Sequencing research, which includes genetic data processing, visualization, and data integration. The integration allows one to get rid of restrictions imposed by an application library by its operation set and properties. The technique of the transformation is based on Model Driven Architecture principles and logical inference of the derived models and the code. The current results and the future fork are presented and discussed. © 2021 for this paper by its authors. Use permitted under Creative Commons License Attribution 4.0 International (CC BY 4.0).

关键词： Data integration

来源：评论

学校读者我要写书评

暂无评论

Developing application for thermobarometric calculation in geology 3

Developing application for thermobarometric calculation in g...

引用

3rd Scientific-Practical Workshop Information Technologies: Algorithms, Models, systems, ITAMS 2020

作者： Chudnenko, Konstantin V. Avchenko, Oleg V. Popova, Anastasia K. Vinogradov Institute of Geochemistry SB RAS Irkutsk Russia Far East Geological Institute FEB RAS Vladivostok Russia Matrosov Institute for System Dynamics and Control Theory SB RAS Irkutsk Russia

This article focuses on development of software for calculating the temperatures and pressures of rock formation. The assessment of the physicochemical conditions of natural mineral formation is based on solving the inverse problem of convex programming - modeling mineral equilibria by minimizing the Gibbs free energy of a mineral system. The proposed algorithm includes the parametric minimization of the criterion function of deviation of the observed and calculated mineral paragenesis over the entire set of specified identifying parameters. The method was verified using the example of thermobarometric conditions for the formation of metamorphic rocks of the Okhotsk complex (North-East of Russia). In the conclusion, the main directions of using the obtained estimates in geological applications are outlined. © 2020 for this paper by its authors. Use permitted under Creative Commons License Attribution 4.0 International (CC BY 4.0).

关键词： Convex optimization

来源：评论

学校读者我要写书评

暂无评论

Simulation of Railway Marshalling Yards Based on Four-Phase Queuing systems 1

引用

19th International Conference on Information Technologies and Mathematical Modelling, ITMM 2020

作者： Zharkov, Maksim Lempert, Anna Pavidis, Michael Matrosov Institute for System Dynamics and Control Theory of Siberian Branch of Russian Academy of Sciences Irkutsk Russia Irkutsk National Research Technical University Irkutsk Russia Irkutsk State Transport University Irkutsk Russia

ISBN: (数字)9783030722470

ISBN: (纸本)9783030722463

Design and study of mathematical models of marshalling yards in order to increase productivity and ensure their smooth operation is relevant, since these objects are key elements for the organization of freight transport on the railway network. In this work, we develop a mathematical model for the operation of a marshalling yard in the form of a four-phase queuing system with BMAP flow and group service of requests. Each phase is a non-Markov multichannel queuing system with a finite queue and group service of requests in the channel. For its numerical study, we create and implement a simulation model. The proposed mathematical apparatus and software are tested on for the operating marshalling yard, which is typical and located on the East Siberian Railway. We demonstrate that it allows us to assess the current level of operation, determine the maximum permissible load and find bottlenecks in the structure of the selected station and then eliminate them. © 2021, Springer Nature Switzerland AG.

关键词： Queueing theory

来源：评论

学校读者我要写书评

暂无评论

Russian-Mongolian scientific initiative for assessing the seismic hazards of the Baikal region and Mongolia 4

Russian-Mongolian scientific initiative for assessing the se...

引用

4th Scientific-Practical Workshop Information Technologies: Algorithms, Models, systems, ITAMS 2021

作者： Bychkov, Igor V. Paramonov, Viacheslav V. Ruzhnikov, Gennadiy M. Mikhailov, Andrey A. Fedorov, Roman K. Klyuchevskii, Anatoly V. Dem’yanovich, Vladimir M. Demberel, Sodnomsambuu Matrosov Institute for System Dynamics and Control Theory Siberian Branch Russian Academy of Sciences Irkutsk Russia Institute of Mathematics and Information Technologies Irkutsk State University Irkutsk Russia Institute of Earth’s Crust of SB RAS Siberian Branch Russian Academy of Sciences Irkutsk Russia Institute of Astronomy and Geophysics of Mongolian Academy of Sciences Ulaanbaatar Mongolia

The territories of the Baikal Region and Mongolia belong to the areas with evaluated seismic activity. In turn, these territories are at heightened risk of potentially damaging events for human socio-economic activity. Consequently, seismic activity recording and forecasting would allow us to minimise possible damages. These issues require collecting and processing large volumes of heterogeneous data. In order to effectively process such datasets, it would be necessary to use state-of-the-art information technologies and expandable analytical systems. Such systems should have a set of tools to enable collection, generation, transformation, visualisation and analysis of data. However, while implementing products of these types, developers, normally tend to use low-level tools for programming (various general-purpose programming languages and standard DBMS capabilities). On the other hand, developers tend to create highly specialised systems that are closely related to a specific automation object and focus on certain data structures. The paper considers an approach to the development of an information-analytical system as an infrastructure element for assessing the seismic hazard of large lithospheric blocks of the Baikal region and Mongolia. © 2021 Copyright for this paper by its authors.

关键词： Metadata

来源：评论

学校读者我要写书评

暂无评论

Superparticle in an external chiral matter superfield

arXiv

引用

arXiv 2022年

作者： Adolfovich, Yuri Markov Markova, M.A. Bondarenko, A.I. Markov, N.Yu. Matrosov Institute for System Dynamics and Control Theory Siberian Branch Russian Academy of Sciences Irkutsk664033 Russia

In this paper the interaction Lagrangian of a superparticle with an external chiral (mattеr) superfield Ф(x,θ , θ ), invariant with respect to the global supersymmetry, is proposed. The kinematics of the superparticle is defined in an extended superspace described by superspace coordinates (xμ ,θα ,θα ), where xμ are pure bosonic coordinates, μ = 0,…, 3;θα and θα are additional fermionic Grassmann-valued spinors. With the purpose of the construction of the required Lagrangian, the chiral analogues of the supervector Aμ(x, θ, θ¯) and superspinor Aα(x, θ, θ), Aα (x, θ, θ) gauge fields are introduced, which are also matrices in color space. The problem considered in this paper is the further step in deriving the dynamical equations of motion for a spin color-charged particle moving in an external fermionic matter field. These equations of motion are of fundamental importance, for example, when taking into account the influence of fermionic background fields induced in a hot quark-gluon plasma (QGP) by thermal fluctuations on the dynamics of hard color-charged partons crossing the QGP. In turn, the solution of this problem will make it possible, at least at the qualitative level, to advance in the study of the motion in the external fermion matter field of such a complex physical object as a string. © 2022, CC BY.

关键词： Equations of motion

来源：评论

学校读者我要写书评

暂无评论

Optimization of the composition of the structure of heat sources as applied to the problems of the development of heating systems 2

Optimization of the composition of the structure of heat sou...

引用

2nd International Scientific Conference on Sustainable and Efficient Use of Energy, Water and Natural Resources, SEWAN 2019

作者： Stennikov, V.A. Edeleva, O.A. Fereferov, E.S. Melentiev Energy Systems Institute of SB RAS Russia Matrosov Institute for System Dynamics and Control Theory of SB RAS Russia

The study outlines the concept of the structure of heat sources of developing heating systems and states the problem of searching through structures of heat sources of maximum redundancy for the optimal one. As one of the techniques of solving this problem, the authors propose to split the process of designing heating systems into multiple stages. Within the scope of the above-stated problem, the difficult part is the need to create an automated system to solve the entirety of problems arising at these stages and to reconcile them with each other. We provide a brief overview of the the available software package that we propose to integrate into the process of solving and we underline the complex nature of the interaction of individual software components between each other. The authors propose an approach in the form of the computational experiment setup that enables to consistently coordinate computational procedures with each other. The approach is based on the concept of the energy hub as its theoretical backbone, while in terms of the software implementation it is an instance of an automated information system. © 2020 IOP Publishing Ltd.

关键词： Heating equipment

来源：评论

学校读者我要写书评

暂无评论

Modifications of genetic, biogeography and particle swarm algorithms for solving multiextremal optimization problems

引用

AIP Conference Proceedings 2023年第1期2700卷

作者： Pavel Sorokovikov Alexander Gornov Matrosov Institute for System Dynamics and Control Theory of SB RAS Irkutsk Russia

The article offers the developed modifications of multiagent nature-inspired algorithms for finding the absolute extremum of multimodal objective functions. The proposed algorithms are based on hybridization with the quasi-Newton method for local descent at each iteration. Variants of genetic, biogeography, and particle swarm methods proposed by the authors are used for global search. We have performed the numerical comparison of implemented algorithms employing a representative set of multiextremal functions. The achieved research results confirm the efficiency of the proposed algorithms and the possibility of constructing computational schemes, which can be the foundation for effective methods for studying global search problems.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Identification of the energy system critical elements using the PARMONC library

Identification of the energy system critical elements using ...

引用

International Conference on Marchuk Scientific Readings 2020, MSR 2020

作者： Edelev, A.V. Marchenko, M.A. Basharina, O.Yu. Melentiev Energy Systems Institute SB RAS Lermontov St. 130 Irkutsk664033 Russia Institute of Computational Mathematics and Mathematical Geophysics SB RAS 6 Ac. Lavrentieva ave. Novosibirsk630090 Russia Novosibirsk State University Novosibirsk-90 2 630090 Russia Matrosov Institute for System Dynamics and Control Theory SB RAS Lermontov St. 134 Irkutsk664033 Russia

In this paper, we presented a Monte Carlo-based approach for vulnerability analyse of energy systems. For high-performance Monte Carlo simulation the PARMONC software library was used. The PARMONC is implemented on high-performance clusters of the Siberian Supercomputer Center. The PARMONC effectively launches parallel stochastic simulation on supercomputers with different architectures. The proposed approach was applied was applied for the identification and ranking the most important elements of a real-world natural gas supply system. © 2021 institute of Physics Publishing. All rights reserved.

关键词： Supercomputers

来源：评论

学校读者我要写书评

暂无评论

Towards knowledge-based virtual assistant development with the aid of ontology transformations

Towards knowledge-based virtual assistant development with t...

引用

IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering, SIBIRCON

作者： Nikita O. Dorodnykh Olga A. Nikolaychuk Aleksandr B. Stolbov Aleksandr Yu. Yurin Matrosov Institute for System Dynamics and Control Theory Siberian Branch of the Russian Academy of Sciences (ISDCT) Irkutsk Russia

ISBN: (纸本)9781665464819

One of the challenges for the popularization of knowledge-based systems (KBS) is to be more user-friendly and involved in solving everyday tasks. A way to encourage users to apply KBSs more actively is the use of up-to-date achievements in the field of human-machine communication, in particular a special type of intelligent systems – virtual assistants. In this paper we present the roadmap ideas for proper upgradation of the Prototyping Expert systems based On Transformations (PESoT) technique for the virtual assistant facilities. This technique involves the use and transformation of conceptual models and ontologies for creating software and source codes. In this paper, we present computation- and platform-independent models (ontology of the dialog model, ontology for the Aimylogic tool) as well as correspondence examples for transformation implementation.

关键词： Computational modeling Virtual assistants Source coding Ontologies Software Task analysis Intelligent systems

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：