Optimal parameters for consequences of tangential and two-frequency decompositions
... incomplete block-decomposition for a block-tridiagonal matrices is considered. This method generalizes methods are developed by Buzdin and Wittum [1; 2]. A method of choosing quasioptimal parameters for consequences of tangential and two-frequencies decompositions based on analysis of model problems is developed. It’s convergence rate is better than ADI’s convergence rate in commutational case..
1.
Buzdin К
. Tangential decomposition // Computing (1998) 61:257–276.
2
. Buzdin К., Wittum ...
Tangential decomposition and its generalization
We present a preconditioner for large systems of linear equations based on the incomplete block decomposition for block-tridiagonal matrices. This method generalizes frequency-filtering method of G. Wittum [1] and methods developed in [2–4] etc.
1. Wittum G. Filternde Zerlegungen-Schnelle Löser für grosse Gleichungssysteme// Teubner Skripten ...
Optimal parameters and sharp estimates of the convergence rate of the tangent expansion
In this paper we conceder the properties of the tangential incomplete block LU — decomposition. We present an analytical approach for determination of the optimal values of the decomposition parameter and derive sharp estimates of the convergence rate for a broad class of model problems. Numerical results prove that high convergence ...
Representation of methods for solving subtasks of different types from the decomposition of a diagnostic problem
... representation of the real problems in medical diagnostics. In the paper, we introduce concepts «a task» and «a method». In addition, here we introduce the method and model for the formation of schemes-images of methods for solving tasks from decomposition of a diagnostic problem. All concepts are interpreted in terms of the language of the description of relations and connections. A. V. Kolesnikov introduced it for predicative coding of the verbal-sign knowledge about the subject area.
...
A review of the existing generalizations of the Deuring Reduction Theorem
The article is focused on various generalizations of the Deuring Reduction Theorem. Our research proves that the most appropriate theorem for further elaboration is the one that relates the decomposition of pK into prime ideals with the decomposition of A[p] into indecomposable BT1-group schemes up to isomorphism. The article investigates basic problems of the theorem's further generalization and some ways of solving them as well as formulates ...
Decomposition of incomplete standard basis of the field Q(mD) in the multidimensional continued fraction
The algorithm of decomposition of incomplete standard basis of the field Q(mD) in the multidimensional periodic continued fraction of the general form.
1. Jacobi C. G. J. Allgemeine Theorie der Kettenbruchänlichen Algorithmen, in welchen jede Zahl aus drei Vorhergehenden ...
Efficiency analysis of seaports in Russia’s Baltic basin: performance evaluation
... authors, can be achieved through several steps (Fig. 4).
4
Algorithm of the efficiency analysis of the seaport
Sequential actions presented in Figure 4 allow concluding that the well-known rules of the systemic approach, such as integration, integrity, decomposition, and hierarchy [27], can contribute to achieving the tasks of complex investigation of the seaports activities, and increase the decision-making quality at all management levels with certain time perspectives. As mentioned earlier, the ...
Internet diffusion and interregional digital divide in Russia: trends, factors, and the influence of the pandemic
... 2020—2021, and one of the national development goals<4> is to increase the share of households with broadband access to the Internet up to 97 % (in 2020 — about 77 %). However, there are significant differences between regions, requiring a regional decomposition of the national goal. This requires a deeper analysis of the underlying factors of Internet diffusion.
In 2022, amid breaking global production chains, worsening trade relations and other restrictions, the role of digital technologies is ...
Reactions of dibenzothiazine amination of quinone derivatives on a «copper film»
... inexpensive and efficient catalyst: A valuable contribution in organic synthesis // Coordination Chemistry Reviews. 2017. Vol. 353. P. 1—57.
5. Salavati-Niasari M., Davar F., Mir N. Synthesis and characterization of metallic copper nanoparticles via thermal decomposition // Polyhedron. 2008. Vol. 27, iss. 17. P. 3514—3518.
6. Pantidos N., Edmundson M., Horsfall L. Room temperature bioproduction, isolation and anti-microbial properties of stable elemental copper nanoparticles // New Biotechnology. 2018....
Modeling of the image of the problem situation of medical diagnostics: challenges and state of the question
... коллективных решений виртуальным консилиумом // Искусственный интеллект и принятие решений. М., 2018. № 4. С. 20—31.
Rumovskaya S. B.
diagnostic problem, decomposition, cognitive graphics, imaging thinking, psycholinguistics, cognitive linguistics, hybrid intelligent systems
77-84
Features of practical implementation of the system of control over the design process within CAD CS complex technological objects
... Бен. LINQ. Карманный справочник. СПб., 2009.
20. Архангельский А. Я. Программирование в Delphi для Windows. СПб., 2007.
Arunyants G., Airapetov D.
system design, technological object, decomposition, managing complex, structure, module, information, software, user interface
91-98