Numerical modeling of turbulent fields of velocity,temperature, and concentration in a rectangular channel

The finite elements method is used to solve a system of three-dimensional transport equations in a rectangular channel.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 57, No. 2, pp. 246–253, August, 1989.     

DISPRO: A discrete programming package

Conclusions The DISPRO package is open for modification and further development. Its modular structure allows expansion of the source language, incorporation of new system and application modules, realization in the current version of an interface with DBMS and other application packages (e.g., report generator, matrix generator), synthesis of the package with PL/1 and FORTRAN IV programming systems.The first version of DISPRO released in 1980 has successfully passed the requisite acceptance tests and is now officially part of the optimization packages supported by ES series computers. As outlined in this article, the package has tremendous possibilities for solving a wide range of discrete optimization problems. So far, certain classes of discrete programming problems could be solved by LP ASU [31], VEKTOR-1, the Z-system [58], and TsP [31] application packages. In addition, some packages have been developed in recent years for mathematical programming and operations research (DISPLAN, an interactive planning system [60]; PTP, optimization of transportation problems [58]; PMP, separable and parametric linear programming; DILOS, interactive system for unconstrained optimization, nonlinear programming, and optimal control; ORBITAL', unconstrained optimization and approximation [61]; NDO, nondifferentiable and stochastic optimization [62]; and other less known packages reviewed, in particular, in [58].New optimization packages are currently being developed in response to increased demands for quality, efficiency, and applicability in various MIS and ADPS. The next version of the DISPRO package is being designed on the basis of the appropriate principles and requirements for modern method-oriented packages, including accumulation and analysis of package performance data (these data may be used to improve the package software and structure), large dimensionality of the relevant problems, operating reliability, commercial development of packages, and their usability in integrated data processing systems.In conclusion, DISPRO was developed by the concerted effort of a large team. In particular, we should mention the contributions of Yu. M. Ermol'ev, V. L. Volkovich, A. I. Kuksa, Yu. Yu. Chervak, N. S. Podgorodetskaya, E. S. Karpinka, V. M. Sementsova, V. I. Artemenko, and other members of the team.Translated from Kibernetika, No. 3, pp. 117–137, May–June, 1981.     

Formation of a Two-Phase Structure in CH3NH3PbI3 Organometallic Perovskite

Semiconductors - The effect of annealing of a CH3NH3PbI3 organometallic perovskite film on its electrical, photoelectrical, and optical properties is studied. It is shown that annealing at the...     

Parametric decision problems with financial losses

A decision-making system consisting of a decision maker and a situation of decision making is considered. A parametric decision problem with financial incomes on which preferences obey a natural numerical order is investigated. A decision preference criterion that is the maximum of expected losses among distributions that constitute a statistical law describing the random nature of natural states is obtained. By this criterion, the class of decision makers is specified axiomatically.     

Some classes of preference choice rules for decision-making problems

The topic under discussion is modeling the subject of a decision making system, a decision maker (DM), up to the information, which it relies upon while making a concrete decision, directing towards the purpose before it, i.e., choosing the best possible action. Clearly, the indicated model of a DM substantially depends on the object of decision making, the situation of decision making (SDM), which this DM roughly presents in the form of the so-called situation of decision problem (SDP) through discarding the decisions impossible (or not interesting) for itself as well as impossible (according to its view) consequences from the initial situation, thus obtaining the so-called scheme of the situation of decision problem (SSDP). The interchangeability of the obtained models is studied.     

To parametric decision problems with money income

This paper studies a decision-making system in which a situation has its numerical consequences with the natural order as the preference relation of a decision-maker. A rather wide class of situations is considered in which the decision-maker can use the criterion of the mentioned type under some rather natural conditions based on the principle of guaranteed result, which depends only on a regularity that describes randomness in a general sense, i.e., the regularity of a mass phenomenon representing a state of nature.     

Academician V. S. Mikhalevich: Analysis of Transition Economy

The main scientific results Academician V. S. Mikhalevich obtained in the modeling of transition economy at the beginning of 1990s are generalized in the paper.To the 75 anniversary of V. S. Mikhalevich__________Translated from Kibernetika i Sistemnyi Analiz, No. 2, pp. 3–24, March–April 2005.     

Remarks on the Dyer-Saaty controversy

Translated from Kibernetika i Sistemnyi Analiz, No. 1, pp. 97–102, January–February, 1994.