53 articles in this issue
Ye. P. Blohin,M. L. Korotenko,R. B. Granovskyi,N. Ya. Harkavi,Ye. F. Fedorov,Ye. I. Fylypenko,O. M. Lytvynenko
There are described four concepts of the statistical measurements and the methods realizing these concepts for processing the observations. There are adduced the examples in which correct and incorrect using of the results obtained by this methods for sol... see more
O. M. Bondarev,V. L. Gorobets,I. M. Gruschak
In the paper on the example of electric trains of a series ??9 it is suggested a variant of estimation of service life for carrying structures of the motor-wagon rolling stock, which are analogs, on the basis of results of comparative analysis of values, ... see more
S. V. Myamlin,M. Ye. Naumenko,O. O. Nikitchenko
The algorithm of construction of mathematical model for operation of a friction shock absorber is considered.
D. M. Kozachenko,R. V. Vernyhora,M. I. Berezovyi
For modeling of the trains accumulation process on marshalling tracks the special simulation model is designed. The model is used for study of the influence of specialization of marshalling tracks on duration of the operations for liquidation of «windows»... see more
L. M. Loboiko,S. V. Myamlin,A. L. Pulariia
For passenger coaches the scientific bases on substantiation of the operation time with the account of their technical conditions and separation of the inter-repair cycles for coaches with different repair amounts are developed.
V. V. Myamlin
The method of formalization of the repair module work process of the car-repair flow line with flexible transport system is considered. As the mathematical scheme of process of the module functioning, the specific scheme of a piecewise-linear unit from th... see more
D. O. Bosiy
The existing methods of calculation of electromagnetic processes in the systems of traction AC power supply have been analyzed. The modern simulation methods for studying the electromagnetic processes have been proposed. The expression for calculation of ... see more
I. L. Vasyliev,M. Ye. Pavlychenko,M. Ye. Pavlychenko
In UrGUPS a project of leg of the contact network support with a high resistance to electric corrosion is developed. New features are achieved through the protection of place of maximum mechanical load of the leg from flowing down currents in th... see more
O. O. Karzova
In the article the issues of increase in operation rate of devices of power circuits’ protection for the electric rolling stock are considered, the mathematical model of an engine of consecutive excitation is presented and the results of modeling of trans... see more
Ye. D. Kim,V. H. Sychenko,V. M. Taran
The efficiency of sorting of defective dish-shaped porcelain insulators on the criterion of tgd = 0,08 is justified. It is demonstrated the possibility of estimation of the insulation condition and remaining resource of the insulators on a railway line un... see more
P. O. Loza
With the aim to develop the recommendations for increasing the capacity factor of static converters for the traction electric machines’ test stand this research has been carried out.
A. M. Muha
Issues of determination of the specific volume of steady-state converters for multi-system electric rolling stock of railways are discussed in the article.
M. Ye. Pavlychenko
In UrGUPS a new design of top assembly of current collector is developed allowing to improve the stability of contact pressure, to decrease the reduced mass, to lower the wear of contacting elements. The effect is achieved through the installation of thir... see more
K. Ts. Hlavatskyi,V. Ye. Cherkudinov
Variants of reducing the resistance to moving of a vibrorammer on flat surface are presented.
H. H. Kvantaliani,Y. P. Korzhenevych,T. H. Todua,B. Y. Toropov
The methods of estimation of overheat of composition brake shoes on mountain pass sections are considered.
I. P. Korzhenevych
The new method of survey of railway track plan is offered with the use of electronic tacheometer.
M. B. Kurgan,O. S. Chernyshova
The research results regarding the change to expenses of materials for the current rail track maintenance are presented.
V. V. Rybkin,O. M. Patlasov,M. A. Arbuzov
The article presents a method of determination of possibility of laying of long welded track on the repaired ground bed. Such criteria of the ground bed stabilization as stability parameter and stability coefficient are introduced.
V. V. Rybkin,V. V. Tsyhanenko,O. V. Gubar,N. V. Khalipova
The results of analysis of the rolling stock derailment in curve track sections, which took place on Ukrainian railways, are presented. The distribution of derailments under influence factors such as: the curve radius, the rolling stock speed, the type of... see more
M. M. Biliaev,I. V. Kalashnikov
A numerical model to calculate the process of soil protection from pollution with the use of neutralizator has been proposed. The model is based on the equation of admixture transfer. The results of numerical experiment are presented.
I. V. Mamchuk
In this article the account of ecological management issues during conduction of restructuring an ecologically harmful enterprise is considered. In the implementation of ecological management it is required to take into account an ecological passport, whi... see more
I. V. Novikova
The problem of saving the resources in new conditions of management and economic establishing and growth of the Ukrainian industrial enterprises is studied. The role of scientific and technical progress in solving this problem is given.
I. O. Pryhara
In the article the basic stages of life cycle of ecological commodity, the analysis of charges and income on every stage, the ways of prolongation of life cycle of commodity are studied, and also the estimation of life cycle of the commodity is conducted.
O. A. Spaska,S. V. Ivanov
The composition and properties of fluorosurfactant protective coating against evaporation of light fractions of petrols during their long-term storage in reservoirs are analysed, the research of protective coating components interaction is conducted, and ... see more
O. I. Bezbabicheva,M. V. Rozenfeld,O. H. Kislov
The estimation order of thermal streams on the horizontal and vertical surfaces of bridges is offered. The data of estimation can be used as boundary conditions at determination of the dependence of temperature tensions on climatic factors.
V. I. Bolshakov,Yu. L. Savin,O. P. Prykhodko,Yu. M. Fedorchenko,L. S. Savin,Ye. Yu. Savin
In the article theoretical bases of the syntheses of glass-enamel coming from modern concepts of physicochemistry are considered. The main attention is paid to the regularities related to position of anion parts of compounds. In this context the diagonal ... see more
O. L. Zakora,S. V. Kliuchnyk,V. V. Marochka
Variations of stresses in cross-sections of a launching girder and a span at all stages of its longitudinal shifting are investigated in the paper.
O. M. Pshinko,O. V. Krasnyuk,O. V. Gromova,V. V. Palii
In the article one of directions of creation of repair material with the set technological and operational properties by means of use of modifying additives of the directed or multifunctional action is considered. The requirements to repair compositions o... see more
O. S. Raspopov
Dynamics of multicomponent rod systems with use of the theory of graphs and automatic machines is considered. It is shown that the structure of such models can be set by means of spatial matrices on the basis of research of topological properties of a sys... see more
V. O. Andryushchenko
Based on the fuzzy modeling of railway operation processes, the issues of forecasting wagons movement periods have been considered.
O. O. Bardas
The specified model of definition of the order of trains processing on the switching stations considering operative data of automatic management systems of freight transportation is developed.
T. V. Butko,H. S. Baulina
The technology of work of boundary stations is analysed and ways to its perfection are determined. On the basis of Petry networks the opportunity of formation of system of decision-making support is considered.
V. M. Ilman,M. V. Skalozub
This article offers the methods of calculation of the start points of contact during wheel set-rails family interaction. The states of wheel set are investigated; the types of possible specific wheel set states, turning-over of rolling stock elements and ... see more
T. F. Myhailova,O. V. Pyskunova,A. A. Zaikin
The Laffer curve for the economy ofUkraineon the basis of statistical data for the period from 1998 to 2006 has been constructed. Comparison of the average value of total nominal tax rate fixed inUkrainewith the optimum rate calculated by us has shown tha... see more
L. O. Panyk
In the article a method is developed and the multicriterion analysis of streams is executed in network models in the conditions of unclear (interval) basic data.
V. V. Skalozub,S. Yu. Razumov,V. Vl. Skalozub
The source of inconsistency of data of matrices of pair comparisons, which are utilized in the Analytic Hierarchy Process, is determined. The improved procedure of data processing is developed, which provides more consistent results of pair comparisons an... see more
V. V. Skalozub,K. S. Foksha
The problem of stability of optimum plans of empty cars return is investigated in the article. For stochastic planning model, using the statistic test method the values of plans sensitiveness to changes of input data are obtained.
M. S. Cherednychenko
A method of economic evaluation for the efficiency of using the capital production assets of railway transport operators is developed. The method allows calculating the optimum necessity in freight cars taking into account the financial and technological ... see more
I. O. Vakulenko
The destruction occurrence in a railroad wheel is caused by formation of the high local stresses produced by the inhomogeneous plastic deformation, the cyclic temperature change during and after braking as well as the type of brake system.
I. A. Vakulenko,O. M. Perkov
In the article the solution of urgent scientific and technical problem is considered – the development of technology of hardening thermal treatment of railroad wheels.
I. O. Vakulenko,S. O. Plytchenko
The paper presents technologies of welding with the use of different energy sources.
M. A. Gryshchenko
In the article the research results of occurring defects in railroad wheels, the systematization and attempt of explaining the causes of occurring them are presented.
Yu. S. Barash,I. P. Korzhenevych
The railway transport ofUkraineis examined from positions of the sustainable development.
V. Ye. Vlasyuk
The article is devoted to the theoretical-and-methodical problems of research of factors of influencing the state regulation of the processes of distribution of profits. The efficiency of the state regulation of macroeconomic processes is analyzed.
O. M. Gnennyi
The article defines the criterion of economic efficiency which allows comparing the coaches with different quantity of passenger places from the viewpoint of railways, in market conditions, from marketing principles of management. The major factors influe... see more
O. H. Deineka,O. O. Mishchenko
The theoretical approaches to development of strategy of the state regulation of railway transport ofUkraineare exposed.
Ye. V. Dykan
Development of transit, logistics and containerization characterizes the state of the modern national transport system. Thus the development of one of directions, for example transit, has served by a stimulus to expansion of process of cargo containerizat... see more
Yu. Ye. Kalabuhin
In the article the basic theoretical statements of determination of cost of life cycle for the tractive rolling stock as a prerequisite of feasibility study of its update in the modern conditions of economic development are presented.
M. Ye. Kozhushkin,L. M. Savchuk
The review of models of pricing depending on the types of markets and application sphere of pipe products is executed. Innovative approach to determination of competition price on pipe products through a regressive analysis and division of all assortment ... see more
H. O. Korol,Yu. T. Trush
The components of system of service and repairs of main means of regional gas supply system are determined, assets, their terminology according to interbranch and branch standards is specified.
M. T. Kostyshyna,O. S. Sushchenko
Theoretical and practical problems of accumulating investment resources as well as the investment as one of the aspects of planning the state economic policy have been considered in the article.
V. I. Romanko,O. V. Romanko
The labor productivity on railway transport ofUkraine, the methods of its calculation at facilities and the factors affecting its changes are considered in the article.
R. V. Savchuk
The possibilities of facet analysis for classification and diagnostics of regional innovative projects are considered in this article. The offered method allows to group projects in the aggregated classes for determination of strategy of regional manageme... see more