Труды сотрудников ИВМ СО РАН

[Text] : статья / A.N. Gorban, I.V. Karlin, P. Ilg, H.C. Ottinger // Journal of Non-Newtonian Fluid Mechanics. - 2001. - Vol. 96, Iss. 1-2. - p. 203-219
Аннотация: We give a compact non-technical presentation of two basic principles for reducing the description of nonequilibrium systems based on the quasi-equilibrium approximation. These two principles are: construction of invariant manifolds for the dissipative microscopic dynamics, and coarse-graining for the entropy-conserving microscopic dynamics. Two new results are presented: first, an application of the invariance principle to hybridization of micro-macro integration schemes is introduced, and is illustrated with non-linear dumbbell models; second, Ehrenfest's coarse-graining is extended to general quasi-equilibrium approximations, which gives the simplest way to derive dissipative equations from the Liouville equation in the short memory approximation.

http://icm.krasn.ru/refextra.php?id=1808,
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ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44

Доп.точки доступа:
Karlin, I.V.; Карлин, Илья Вениаминович; Ilg, P.; Ottinger, H.C.; Горбань, Александр Николаевич

[Текст] : статья / А.Е. Новиков и др. // Mathematical Models and Computer Simulations. - 2010. - Vol.2, №.4. - С. 443-452


Доп.точки доступа:
Novikov, E.A.; Новиков, Евгений Александрович

[Text] : статья / E. A. Novikov // Automation and Remote Control. - 2012. - Vol. 73, Iss. 1. - p. 191-197DOI 10.1134/S0005117912010183 . -
Аннотация: An L-stable (2,1)-method with second-order accuracy is developed for solving stiff nonautonomous problems. At each step, the right-hand side of the system, as well as Jacobian matrix decomposition are evaluated only once. Efficiency of the integration method is illustrated using ring modulator calculation as an example.

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Доп.точки доступа:
Новиков, Евгений Александрович

/ O.V. Kaptsov [et al.] // J. Appl. Mech. Tech. Phys. - 2012. - Vol. 53, Is. 5. - pp. 672-678, DOI 10.1134/S0021894412050069. - Cited References: 16. - This work was supported by the Russian Foundation for Basic Research (Grants Nos. 10-01-00435-a and 11-01-09368-mob_z), by the Council on Grants of the President of the Russian Federation for Support of Leading Scientific Schools (Grants Nos. NSh-544.2012.1 and NSh-6293.2012.9), and by the Russian Academy of Sciences (Integration Project No. 103 (Siberian, Far-East, and Ural Branches)). . - 7. - ISSN 0021-8944РУБ Mechanics + Physics, Applied

Аннотация: A mathematical model of the far turbulent wake behind a towed body in a passively stratified medium, based on the known semi-empirical e-E > model of turbulence, is considered. A grouptheoretical analysis of the model is performed. With the help of the method of B-determining equations, the model is reduced to a system of ordinary differential equations, which is solved numerically. The resultant solution is compared with a self-similar solution obtained by direct numerical integration of the differential equations at large distances from the body.


Доп.точки доступа:
Kaptsov, O.V.; Капцов, Олег Викторович; Fomina, A.V.; Chernykh, G.G.; Schmidt, A.V.; Шмидт, Алексей Владимирович

[Text] / T.G. Penkova, A.V. Korobko, V.V. Nicheporchuk // MIPRO 2012 - 35th International Convention on Information and Communication Technology, Electronics and Microelectronics - Proceedings. - 2012. - 35th International Convention on Information and Communication Technology, Electronics and Microelectronics, MIPRO 2012 (21 May 2012 through 25 May 2012, Opatija) Conference code: 91931. - Ст. 6240906. - pp. 1595-1600 . -
Аннотация: An approach to efficiency improvement of monitoring of the emergency situations for the Siberian region is suggested in this paper. It is based on integration of data processing and storage technologies: Data Warehouse, OLAP and Expert systems. The data warehouse provides accumulation of data from isolated monitoring services. The OLAP tools allow a user to perform multiaspect monitoring of natural and anthropogenic emergency situations. The expert systems technology enables user to estimate of the emergencies risk based on state indicators. Suggested original methods and tools are embedded in emergency situations monitoring system "Espla-M". The system "Espla-M" is implemented in Ministry of emergency of Siberian Region. В© 2012 MIPRO.

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Доп.точки доступа:
Penkova, T.G.; Пенькова, Татьяна Геннадьевна; Korobko, A.V.; Коробко, Анна Владимировна; Nicheporchuk, V.V.; Ничепорчук, Валерий Васильевич

[Text] / W.M. Mooij [et al.] // Aquat. Ecol. - 2010. - Vol. 44, Is. 3. - pp. 633-667, DOI 10.1007/s10452-010-9339-3. - Cited References: 260. - WM, RG, IP, SG, PV and AD were supported by grant 047.017.012 of the Netherlands Organization for Scientific Research (NWO) and the Russian Foundation for Basic Research (RFBR). LDSD was supported by NWO grant 817.01.007. DT and EJ were supported by EU-REFRESH, EU-WISER, CLEAR (a Villum Kann Rasmussen Centre of Excellence Project on lake restoration) and CRES. We thank Prof. Andre De Roos for his insightful comments and Dr. Tom Andersen for his contribution to the text. JJ wishes to thank Drs. T. Aldenberg, Dr. L. Van Liere, Mr. M.J. 't Hart, Ir. M.H.J.L Jeuken, Ing. S. van Tol, Ir. J.S. Sloot and many others including the many people who provided lake data, for their contributions to PCLake. This is publication 4838 of the Netherlands Institute of Ecology (NIOO-KNAW). . - ISSN 1386-2588РУБ Ecology + Limnology + Marine & Freshwater Biology

Аннотация: A large number and wide variety of lake ecosystem models have been developed and published during the past four decades. We identify two challenges for making further progress in this field. One such challenge is to avoid developing more models largely following the concept of others ('reinventing the wheel'). The other challenge is to avoid focusing on only one type of model, while ignoring new and diverse approaches that have become available ('having tunnel vision'). In this paper, we aim at improving the awareness of existing models and knowledge of concurrent approaches in lake ecosystem modelling, without covering all possible model tools and avenues. First, we present a broad variety of modelling approaches. To illustrate these approaches, we give brief descriptions of rather arbitrarily selected sets of specific models. We deal with static models (steady state and regression models), complex dynamic models (CAEDYM, CE-QUAL-W2, Delft 3D-ECO, LakeMab, LakeWeb, MyLake, PCLake, PROTECH, SALMO), structurally dynamic models and minimal dynamic models. We also discuss a group of approaches that could all be classified as individual based: super-individual models (Piscator, Charisma), physiologically structured models, stage-structured models and traitbased models. We briefly mention genetic algorithms, neural networks, Kalman filters and fuzzy logic. Thereafter, we zoom in, as an in-depth example, on the multi-decadal development and application of the lake ecosystem model PCLake and related models (PCLake Metamodel, Lake Shira Model, IPH-TRIM3D-PCLake). In the discussion, we argue that while the historical development of each approach and model is understandable given its 'leading principle', there are many opportunities for combining approaches. We take the point of view that a single 'right' approach does not exist and should not be strived for. Instead, multiple modelling approaches, applied concurrently to a given problem, can help develop an integrative view on the functioning of lake ecosystems. We end with a set of specific recommendations that may be of help in the further development of lake ecosystem models.


Доп.точки доступа:
Mooij, W.M.; Trolle, D.; Jeppesen, E.; Arhonditsis, G.; Belolipetsky, P.V.; Белолипецкий, Павел Викторович; Chitamwebwa, D.B.R.; Degermendzhy, A.G.; DeAngelis, D.L.; Domis, L.N.D.; Downing, A.S.; Elliott, J.A.; Fragoso, C.R.; Gaedke, U.; Genova, S.N.; Генова, Светлана Николаевна; Gulati, R.D.; Hakanson, L.; Hamilton, D.P.; Hipsey, M.R.; 't Hoen, J.; Hulsmann, S.; Los, F.H.; Makler-Pick, V.; Petzoldt, T.; Prokopkin, I.G.; Rinke, K.; Schep, S.A.; Tominaga, K.; Van Dam, A.A.; Van Nes, E.H.; Wells, S.A.; Janse, J.H.

[Text] / A.V. Korobko, T.G. Penkova // ICCS 2010 - INTERNATIONAL CONFERENCE ON COMPUTATIONAL SCIENCE, PROCEEDINGS. Ser. Procedia Computer Science : ELSEVIER SCIENCE BV, 2010. - Vol. 1: International Conference on Computational Science(ICCS) (MAY 31-JUN 02, 2010, Amsterdam, NETHERLANDS), Is. 1. - pp. 2305-2311, DOI 10.1016/j.procs.2010.04.259. - Cited References: 20 . - ISBN 1877-0509РУБ Computer Science, Theory & Methods

Аннотация: An approach to analytical decision making support based on integration of OLAP technology and Formal Concept Analysis is suggested in this paper. The base of domain OLAP modeling is considered. The construction of an analytical model with expert knowledge as a lattice of formal cube-concepts is described formally. The use of the suggested approach for constructing an analytical model of municipal procurement procedures is represented. The constructed integral analytical model of domain includes all possible combinations of analyzed objects and gives opportunity ad-hoc manipulation of them. (C) 2010 Published by Elsevier Ltd.


Доп.точки доступа:
Korobko, A.V.; Коробко, Анна Владимировна; Penkova, T.G.; Пенькова, Татьяна Геннадьевна

[Text] / C. J. Farrugia, H. K. Biernat, N. V. Erkaev // Planet Space Sci. - 1998. - Vol. 46, Is. 5. - P507-514, DOI 10.1016/S0032-0633(97)00225-0. - Cited References: 20 . - ISSN 0032-0633РУБ Astronomy & Astrophysics

Аннотация: The solar wind flow past nonaxisymmetric magnetospheres exhibits features which are absent in the case of axisymmetric magnetospheres such as that of Earth. We discuss results obtained by a numerical integration of the dissipationless MHD equations, under simplifying assumptions, and apply them to the two outer planets Jupiter and Saturn, both of whose magnetospheres depart substantially from axisymmetry. We model these magnetospheres as paraboloids with two different radii of curvature at the subsolar point, L-0 and L-1, where L-0 and L-1 refer to a magnetopause cut containing the rotational axis, and to the rotational equator, respectively (L-0 L-1). The degree of flattening is expressed by a parameter q :


Доп.точки доступа:
Farrugia, C.J.; Biernat, H.K.; Erkaev, N.V.; Еркаев, Николай Васильевич

/ E. Kirik, A. Malyshev // Civil Engineering and Urban Planning III - Proceedings of the 3rd International Conference on Civil Engineering and Urban Planning, CEUP 2014. - 2014. - 3rd International Conference on Civil Engineering and Urban Planning, CEUP 2014 (20 June 2014 through 22 June 2014, Wuhan, ) Conference code: 105951. - P. 5-8 . -
Аннотация: In the paper a discrete-continuous model of pedestrian movement is presented. The model is implemented in SigmaEva evacuation module that is a part of "SigmaFS" software for fire safety engineering applications. Some case study of fire evacuation simulation is presented. This work has got partial financial support by the Integration project of SB RAS, number 49/2012. © 2014 Taylor & Francis Group.

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Держатели документа:
Institute of Computational Modeling SB RAS, Krasnoyarsk, Akademgorodok, Russian Federation

Доп.точки доступа:
Kirik, E.; Кирик, Екатерина Сергеевна; Malyshev, A.; Малышев, Андрей Валерьевич

[Text] / E. Kirik, A.Malyshev // J. Comput. Sci. - 2014. - Vol. 5, Is. 5. - P847-850, DOI 10.1016/j.jocs.2014.05.002. - Cited References: 13. - This work is supported by the Integration project of SB RAS, number 49/2012. . - ISSN 1877-7503РУБ Computer Science, Interdisciplinary Applications + Computer Science, Theory & Methods

Аннотация: This article is focused on dynamics of the computer simulation module SigmaEva in bottlenecks. Unidirectional flow was considered. The module SigmaEva realizes the discrete-continuous stochastic pedestrian dynamics model SIgMA.DC that is shortly presented here. Specific and full flow rates for different bottleneck width are given in comparison with experimental data. (C) 2014 Elsevier B.V. All rights reserved.

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Держатели документа:
[Kirik, Ekaterina
Malyshev, Andrey] RAS, Inst Computat Modelling, SB, Krasnoyarsk, Russia
[Kirik, Ekaterina] Siberian Fed Univ, Math&Inf Dept, Krasnoyarsk, Russia

Доп.точки доступа:
Kirik, E.; Кирик, Екатерина Сергеевна; Malyshev, A.; Малышев, Андрей Валерьевич; Integration project of SB RAS [49/2012]

/ M. G. Dmitriev, A. M. Klishevic // Systems and Control Letters. - 1984. - Vol. 4, Is. 4. - P223-226 . - ISSN 0167-6911
Аннотация: Two schemes of iterative solution of optimal control problems with fast and slow motions are considered here. The first is connected with the iterative solution of corresponding necessary optimality conditions and is adjoined to the iterative method of Ju.P. Boglaev for solution of singularly perturbed boundary value problems. The second scheme is applied to convex problems and is conceptionally close to methods of minimization with errors under computation. The distinguishing feature of both methods is the decomposition of restrictions on every iteration and the possibility of their integration in different scales of time. В© 1984 Elsevier Science Publishers B.V. (North-Holland).

Scopus

Держатели документа:
Computing Center, Academy of Sciences, Siberian Branch, Akademgorodok, Krasnoyarsk, 660036 USSR
ИВМ СО РАН

Доп.точки доступа:
Dmitriev, M.G.; Klishevic, A.M.

/ N. A. Makhutov, I. I. Koksharov, A. M. Lepikhin // Strength of Materials. - 1992. - Vol. 23, Is. 5. - P481-488, DOI 10.1007/BF00771443 . - ISSN 0039-2316
Аннотация: Methods used to calculate the reliability indices of structural components (the distribution function of remaining life, the probability of failure-free service, and the risk function) as applies to problems of the propagation of defects under a cyclic load are examined. The potentials of the method of "numeric experiments" are demonstrated in an example of the calculation of crack kinetics in a branch pipe in tension with bending. The reliability indices are calculated for a plane element with a crack by means of numeric integration of determining equations. It is possible to solve problems with different laws governing crack propagation and forms of density distribution for the size of the initial defect within the framework of these methods. A combination of approaches of fracture mechanics and reliability theory with numeric methods of calculation make it possible to evaluate the reliability indices of a defective structural component. В© 1992 Plenum Publishing Corporation.

Scopus

Держатели документа:
A. A. Blagonravov Institute of Machinery, Academy of Sciences of the USSR, Moscow, Russian Federation
Computer Center, Siberian Branch, Academy of Sciences of the USSR, Krasnoyarsk, Russian Federation
ИВМ СО РАН

Доп.точки доступа:
Makhutov, N.A.; Махутов, Николай Андреевич; Koksharov, I.I.; Кокшаров, Игорь Ильич; Lepikhin, A.M.; Лепихин, Анатолий Михайлович

[Text] / T. G. Penkova [et al.] ; ed. P Jedrzejowicz [et al.] // KNOWLEDGE-BASED AND INTELLIGENT INFORMATION & ENGINEERING SYSTEMS 18TH ANNUAL CONFERENCE, KES-2014. Ser. Procedia Computer Science. - 2014. - Vol. 35: 18th Annual International Conference on Knowledge-Based and Intelligent Information and Engineering Systems (KES) (SEP 15-17, 2014, Gdynia, POLAND). - P156-165, DOI 10.1016/j.procs.2014.08.095. - Cited References: 16 . - ISSN 1877-0509РУБ Computer Science, Artificial Intelligence + Computer Science, Software Engineering + Computer Science, Theory & Methods

Аннотация: This paper presents an approach of operational control of the state of technosphere and environment objects based on the integration of Data Warehouse, OLAP and Expert systems technologies. It looks at the structure of data warehouse that provides consolidation and storage of monitoring data. There is a description of OLAP-models that provide a multidimensional analysis of monitoring data and dynamic analysis of principal parameters of controlled objects. The authors suggest some criteria of emergency risk assessment using expert knowledge about danger levels. It is demonstrated now some of the proposed solutions could be adopted in territorial decision making support systems. On-line control allows authorities to detect threat, prevent emergencies and ensure a comprehensive safety. (C) 2014 The Authors. Published by Elsevier B.V.

WOS,
Scopus,
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Держатели документа:
ИВМ СО РАН

Доп.точки доступа:
Penkova, T.G.; Пенькова, Татьяна Геннадьевна; Korobko, A.V.; Коробко, Анна Владимировна; Nicheporchuk, V.V.; Ничепорчук, Валерий Васильевич; Nozhenkova, L.F.; Ноженкова, Людмила Федоровна; Jedrzejowicz, P \ed.\; Czarnowski, I \ed.\; Howlett, RJ \ed.\; Howl, t, RJ \ed.\

[Текст] : статья / Е. А. Новиков, А. А. Захаров // Вестник Тюменского государственного университета. Физико-математическое моделирование. Нефть, газ, энергетика. - 2015. - Т. 1, № 1. - С. 146-154 . - ISSN 2411-7978
   Перевод заглавия: Variable structure algorithm with the Rosenbrock method of a third-order approximation applied

УДК

519.622

Аннотация: Разработан L-устойчивый трехстадийный метод типа Розенброка третьего порядка точности для решения жестких задач. Построено неравенство для контроля точности вычислений, основанное на оценке аналога глобальной ошибки. Оценка осуществляется с привлечением ранее вычисленных стадий, что позволяет выбирать величину шага интегрирования фактически без увеличения вычислительных затрат. Получено неравенство для контроля точности вычислений. Сформулирован алгоритм интегрирования переменного шага.
An L-stable three-step method of the Rosenbrock type of a third-order approximation has been developed to solve stiff problems. To control the accuracy of calculations, we have written the inequation based on analogous global error estimation. The estimation is performed according to the previous calculations. It allows choosing the integration step size without extensive computation. The study results in the inequation to control the accuracy of calculations, and leads to the variable structure integration algorithm.

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Держатели документа:
Институт вычислительного моделирования СО РАН
Институт математики и компьютерных наук Тюменского государственного университета

Доп.точки доступа:
Захаров, Александр Анатольевич; Zakharov A.A.; Novikov E.A.

[Текст] : статья / А. И. Белорусов, Д. В. Жучков // Информатизация и связь. - 2015. - № 2. - С. 36-41 . - ISSN 2078-8320
   Перевод заглавия: Organizing The Intersystem Interaction Of Heterogeneous Information Systems

УДК

004.42

Аннотация: В работе рассматривается решение задачи организации межсистемного информационного взаимодействия между гетерогенными информационными системами. Описаны различные факторы, влияющие на процесс межсистемной интеграции, рассмотрены современные технологии, предложен простой и эффективный подход организации межсистемного информационного взаимодействия, имеющий ряд преимуществ.
The problem of organizing the intersystem interaction of heterogeneous information systems described in the paper. Various factors influencing the process of intersystem integration are observed. Modern technologies for intersystem integration are considered. A simple and effective approach to arrangement of intersystem integration are offered, which have several advantages.

РИНЦ

Держатели документа:
ИВМ СО РАН
ИК ИТ СФУ

Доп.точки доступа:
Белорусов, Артем Игоревич; Belorusov A.I.; Жучков, Дмитрий Викторович; Zhuchkov D.V.

/ K. Schurer, T. Penkova, Y. Shi // Hist. Methods. - 2015. - Vol. 48, Is. 4. - P195-213, DOI 10.1080/01615440.2015.1010028 . - ISSN 0161-5440
Аннотация: This article presents a technique of standardising and coding textual birthplace and occupation strings in the censuses of England and Wales and Scotland, 1851-1911. While the approaches for the two text strings are different, they are both based upon the integration of computer technologies, mathematical methods, and expert knowledge. Both processes are described formally using Structured Analysis and Design Technique methodology. The classification of occupations is defined by two algorithms based on statistical decision theory in order to allocate codes from the original occupation strings. The method of standardising parishes is based on the comparison of original birthplace strings and reference data. © 2015 Taylor and Francis Group, LLC.

Scopus

Держатели документа:
Centre for English Local History, University of Leicester, University Road, Leicester, United Kingdom
Institute of Computational Modelling, SB RAS, Germany
Department of Mathematics, University of Leicester, United Kingdom

Доп.точки доступа:
Schurer, K.; Penkova, T.; Shi, Y.

[Текст] : статья / Е. А. Новиков // Известия высших учебных заведений. Поволжский регион. Физико-математические науки. - 2015. - № 3. - С. 50-60 . - ISSN 2072-3040
   Перевод заглавия: Variable structure algorithm applying 3-stage methods of Runge-Kutta and Rosenbrock types

УДК

519.622

Аннотация: Актуальность и цели. Проблема решения задачи Коши для жестких систем большой размерности возникает при моделировании физических и химических процессов, при аппроксимации уравнений в частных производных системой обыкновенных дифференциальных уравнений и во многих других важных приложениях. Учет большого числа факторов при построении математических моделей приводит к расширению класса задач, описываемых жесткими системами большой размерности. Сложность практических задач приводит к возрастающим требованиям к вычислительным алгоритмам. Материалы и методы. В случае большой размерности жесткой системы дифференциальных уравнений основные затраты приходятся на декомпозицию матрицы Якоби. В некоторых алгоритмах применяется замораживание матрицы Якоби, т.е. одна матрица используется на нескольких шагах интегрирования. Проблема замораживания матрицы достаточно просто решается в методах, в которых стадии вычисляются с применением итерационного процесса. Для безытерационных численных формул это существенная проблема. В данной работе сокращение затрат достигается за счет комбинирования явных и L -устойчивых методов по критерию устойчивости в процессе расчетов. Результаты. Создан алгоритм интегрирования переменной структуры на основе явной схемы типа Рунге - Кутты и L -устойчивого метода типа Розенброка третьего порядка. На каждом шаге эффективная численная формула выбирается по критерию устойчивости. Оценка максимального собственного числа матрицы Якоби, необходимая для переключения между методами, для явных численных схем определяется степенным методом через ранее вычисленные стадии, а для метода типа Розенброка - через норму матрицы Якоби. Построены неравенства для контроля точности и устойчивости. Приведены результаты расчетов. Выводы. Алгоритм интегрирования предназначен для решения жестких задач большой размерности. Результаты расчетов подтверждают эффективность построенного алгоритма.
Background. The Cauchy problem for large-scale stiff systems arises in simulation of physical and chemical processes, in approximation of partial differential equations by a system of ordinary differential equations and in plenty of other important applications. Taking into consideration a large number of factors in model development leads to expansion of a class of problems, determined by stiff systems of high dimension. The complexity of practical problems leads to additional requirements to computational algorithms. Materials and methods. Dealing with high dimensionality of a stiff system of ordinary differential equations, the main computational expenses concern the Jacobi matrix decomposition. In some algorithms one may use freezing of the Jacobi matrix, i.e. applying the same matrix over several integration steps. The problem of freezing is solved rather easy in those methods, the stages of which are computed using some iterative processes. For non-iterative numerical formulas the freezing is quite a difficult problem. In this study, the costs reduction was achieved by combining explicit and L-stable methods using the criterion of stability in calculations. Results. The author has created an algorithm of variable structure integration, based on the explicit scheme of the Runge-Kutta type and the L-stable method of the Rosenbrock type. Both schemes have the third order of accuracy. An efficient numerical formula was chosen according to the criterion of stability at each step of integration. Estimation of maximum eigen value, which is necessary to switch between the methods, for explicit numerical schemes was determined by power iterations using already computed stages, and using the Jacobi matrix norm for the Rosenbrock type method. The researcher also formulated inequalities for accuracy and stability control. The article adduces the results of calculations. Conclusions. The integration algorithm is aimed at solving stiff problems of high dimension. Numerical results confirm the efficiency of the constructed algorithm.

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Институт вычислительного моделирования Сибирского отделения РАН

Доп.точки доступа:
Novikov E.A.

[Text] : статья / E. A. Novikov, A. E. Novikov // Университетский научный журнал. - 2015. - № 15. - P69-79 . - ISSN 2222-5064
   Перевод заглавия: Алгоритм интегрирования с применением L-устойчивого метода четвертого порядка
Аннотация: The paper offers a way of linearizing order conditions. It allows simplifying the investigation of (m,k)-methods. The authors have constructed the L-stable (4,2)-method of the fourth order and have obtained the inequality for accuracy control of calculations. The paper presents numerical results which confirm the eficiency of the alternating step algorithm.
Предложен способ линеаризации условий порядка, позволяющий упростить исследование (m,k)-методов решения жестких задач. Построен L-устойчивый (4,2)-метод четвертого порядка. Получено неравенство для контроля точности вычислений. Приведены результаты расчетов, подтверждающие эффективность алгоритма переменного шага.

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Держатели документа:
Institute of Computational Modeling SB RAS
Siberian Federal University

Доп.точки доступа:
Novikov, A.E.; Новиков, Антон Евгеньевич; Новиков, Евгений Александрович

[Text] / E. P. Magdenko // J. Appl. Mech. Tech. Phys. - 2016. - Vol. 57, Is. 1. - P13-19, DOI 10.1134/S002189441601003X. - Cited References:8. - This work was supported by Integration Project of the Siberian Branch of the Russian Academy of Sciences No. 38 and the Russian Foundation for Basic Research (Grant No. 14-01-00067). . - ISSN 0021-8944. - ISSN 1573-8620РУБ Mechanics + Physics, Applied

Аннотация: This paper considers a liquid in a finite-size cylinder in which Marangoni instability occurs. The upper boundary of the liquid is free and deformable. The problem of the occurrence of convection in a cylindrical container is solved using the method of separation of variables. A homogeneous differential equation of the sixth order with constant coefficients and complex boundary conditions is obtained. An analytical expression for critical Marangoni numbers is derived for the case of monotonic perturbations. The case is considered where the liquid in the cylinder is weightless.

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Держатели документа:
Russian Acad Sci, Inst Computat Modeling, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Magdenko, E. P.; Integration Project of the Siberian Branch of the Russian Academy of Sciences [38]; Russian Foundation for Basic Research [14-01-00067]

/ D. L. Chubarov, V. A. Kochnev, D. A. Terre // IOP Conf. Ser. Earth Envir. Sci. : IOP PUBLISHING LTD, 2016. - Vol. 43: 20th International Scientific Symposium of Students, Postgraduates and (APR 04-08, 2016, Inst Nat Resources, Tomsk, RUSSIA). - Ст. 012024. - (IOP Conference Series-Earth and Environmental Science), DOI 10.1088/1755-1315/43/1/012024. - Cited References:5 . - РУБ Energy & Fuels + Engineering, Petroleum + Engineering, Geological

Аннотация: The largest part of solid minerals (with the exception of those which are at the earth's surface) is being extracted world-wide by surface and underground mining techniques, with adits, mines and other mine workings being used. A considerable amount of mineral deposits (including oil reservoirs) is located either close to a fault-line or immediately within the zone of high seismic activity. To prevent economic and environmental damage under the effect of an earthquake, thorough seismic monitoring of the area must be performed, as well as the study of all possible mechanisms of an earthquake occurrence. In analysing the trigger effect of moon-and sun-induced tidal forces on seismic activity, six great earthquakes which occurred close to equatorial latitude over the last 15 years have been considered. Based on the positions of the Sun and Moon during the day relative to the point mass, the maps of horizontal, vertical components and vector of gravitational forces per unit mass have been plotted. The developed technique can be applicable to a set of methods to study integration and stress unloading mechanisms at the boundaries of block structures.

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Держатели документа:
Natl Res Tomsk Polytech Univ, 30 Lenin Ave, Tomsk, Russia.
Russian Acad Sci, Siberian Branch, Inst Computat Modeling, 50 Acad Gorodok, Krasnoyarsk, Russia.

Доп.точки доступа:
Chubarov, D. L.; Kochnev, V. A.; Terre, D. A.