Poltava University of Economics and Trade

Poltava, Ukraine

Poltava University of Economics and Trade

Poltava, Ukraine
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Iemets O.O.,Poltava University of Economics and Trade | Barbolina T.M.,The National Pedagogical University
Cybernetics and Systems Analysis | Year: 2017

The paper substantiates the method of constructing the lexicographic equivalence to solve mixed combinatorial optimization problems on arrangements with linear-fractional objective function and linear additional constraints. The method involves directed search of equivalence classes obtained by splitting polyhedral set using equivalence relation. The authors propose exact methods as well as an approximate one. The approximate method allows getting the objective function value that differs from the optimum by no more than a predetermined value. © 2017 Springer Science+Business Media New York


Iemets O.O.,Poltava University of Economics and Trade | Yemets' O.O.,Poltava University of Economics and Trade
Cybernetics and Systems Analysis | Year: 2016

The authors consider strong solvability and strong feasibility of uncertain linear systems of equations in five grades (exact, quasi-exact, semi-exact, quasi-fuzzy, and fuzzy). © 2016, Springer Science+Business Media New York.


Gogolieva M.,Kharkiv National University of Radioelectronics | Garkusha S.,Poltava University of Economics and Trade | Abed A.H.,Kharkiv National University of Radioelectronics
2011 11th International Conference - The Experience of Designing and Application of CAD Systems in Microelectronics, CADSM 2011 | Year: 2011

This paper focuses on mathematical models of distribution channels in the multi-mesh-networks, the 802.11 standard by which the balancing of mesh-stations on domains conflicts with their territorial remoteness and activity that can improve the performance of multichannel mesh network as a whole. © 2011 Lviv Polytechnic National.


Iemets O.A.,Poltava University of Economics and Trade | Barbolina T.N.,The National Pedagogical University
Journal of Automation and Information Sciences | Year: 2017

The article deals with solving the linear fractional problem of combinatorial optimization on the general set of arrangements. The authors propose and substantiate the method which provides solving the finite sequence of linear unconditional problems of combinatorial optimization on arrangements. Theoretical estimates of the formulated algorithm are obtained, its polynomiality is proved. © 2017 by Begell House Inc.


Iemets O.A.,Poltava University of Economics and Trade | Barbolina T.N.,The National Pedagogical University
Journal of Automation and Information Sciences | Year: 2017

The properties of unconstrained Euclidean problems of combinatorial optimization on arrangements with linear and linear-fractional objective functions are considered. It is shown that every extremal in linear problem is element of certain set of polyarangements. For problems with linearfractional objective function it was substantiated the way of formation of the set of all extremals, if one of them is known. © 2017 by Begell House Inc.


Yemets A.O.,Poltava University of Economics and Trade
Journal of Automation and Information Sciences | Year: 2017

Consideration is given to the branch-and-bound method for problems of the Euclidian combinatorial optimization with general combinations, where multiplicity of potential recurrence of each element is individually specified. The rules of branching, estimation and nodes detachment in the branch and bound method are presented.


Koliechkina L.M.,Poltava University of Economics and Trade | Dvirna O.A.,Poltava University of Economics and Trade
Cybernetics and Systems Analysis | Year: 2017

The authors consider the extremum optimization problem with linear fractional objective functions on combinatorial configuration of permutations under multicriteria condition. Solution methods for linear fractional problems are analyzed to choose the approach to problem’s solution. A solution technique based on graph theory is proposed. The algorithm of the modified coordinate method’s subprogram with search optimization is described. It forms a set of points that satisfy additional constraints of the problem. The general solution algorithm without linearization of the objective function and it’s block diagram are proposed. Examples of the algorithm are described. © 2017 Springer Science+Business Media, LLC


Harkusha S.,Poltava University of Economics and Trade | Harkusha O.,Poltava University of Economics and Trade
Modern Problems of Radio Engineering, Telecommunications and Computer Science, Proceedings of the 13th International Conference on TCSET 2016 | Year: 2016

The frequency resource distribution mathematical model is offered as a problem of subchannels' number balancing between radio channels formed by mesh-stations of the wireless network. The use of the offered model has made it possible to raise efficiency of the wireless mesh-network as a whole and ensure the bottlenecks absence. © 2016 National University Lviv Polytechnic.


Garkusha S.V.,Poltava University of Economics and Trade
CriMiCo 2013 - 2013 23rd International Crimean Conference Microwave and Telecommunication Technology, Conference Proceedings | Year: 2013

The comparative analysis of the proposed model of distribution for time-frequency resource of LTE technology with the existing methods in terms of the overall performance of the downlink, the degree of balancing capacity, as well as the probability of the desired transfer rate allocation to the user equipment (UE). It is shown that the proposed model under high requirements to transfer rate of UE as compared to known methods, allows 5-20% increasing the downlink capacity balance ratio and 40-100% increasing the probability of allocation of required transfer rate to UE. © 2013 CriMiCo'2013 Organising Committee, CrSTC.


Garkusha S.,Poltava University of Economics and Trade
Modern Problems of Radio Engineering, Telecommunications and Computer Science - Proceedings of the 11th International Conference, TCSET'2012 | Year: 2012

The paper analyzes the influence of territorial separation stations and technological characteristics of multiradio multichannel mesh networking the quality of the solution of the allocation of channels. © 2012 Lviv Polytechnic Natl Univ.

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