56 articles in this issue
V. V. Artemchuk,M. A. Hrichanyi,O. V. Lemeshev
The questions of mechanism of adhesion wear are considered in the article. The action of this type of wear is presented on the example of work of spring-friction shock absorber.
O. M. Bondarev
In the article the research results on determination of levels of loading and stresses in the tractive drive elements, which can appear in operation conditions, under different variants of the tractive gear. On the basis of calculations executed the recom... see more
A. A. Bosov,S. V. Myamlin,V. Ya. Panasenko,I. V. Klymenko
In the article the analysis of factors influencing upon wear of a «wheel – rail» pair is organized and the conclusion on advisability of creation of the third kind kinematical pair in a «side girder – axle box» assembly is made .
O. V. Donchenko,Yu. Ya. Vodianikov,O. M. Safronov,T. V. Sheleiko
The results of design analyses concerning the selection of reduction ratio values are presented. The braking effectiveness and performance of a freight wagon with the separate braking of the bogies meet the normative requirements at these reduction ratio ... see more
V. I. Zelenin,P. M. Kavunenko,V. V. Tysenkov,V. M. Tepliuk,M. A. Polishchuk,V. D. Lebied,V. I. Lipisii,S. V. Bondariev,S. A. Havrylov,N. T. Olhard,S. O. Cheburov
The restoration method for the journals and wheel seats of the freight wagon wheelsets by means of plasma-arc metallization is presented and the results of the bench fatigue tests with the advisable operation life of the axles restored are given.
N. Je. Naumenko,I. Ju. Khyzha,Je. H. Boghomaz
The research of the braking process of high-speed passenger train with the use of compressed-air, electropneumatic and electromagnetic track brakes is carried out. The dependences of braking distance on motion speed for vehicles equipped by block or disk ... see more
O. Je. Nishhenko,A. V. Hrechko,S. V. Kukin,D. I. Jesjkov
The results of tests of the hopper brake systems for the pellets having typical system and separate braking per each bogie are presented. It is shown that the brake system with separate braking has several advantages as compared to the typical one.
D. M. Kozachenko
A model structure of track lay-out for simulation of the process of braking-up and making up of freight trains on the sorting humps is presented. The model is made on the basis of weighed directed graphs. The longitudinal hump profile is approximated by a... see more
A. M. Afanasov
The conditions of compensation of magnetic and mechanical losses during the test of hauling electric machines according to the Potier’s chart are considered.
H. A. Domanska
In the article the approach to realization of energy conservation technologies of hauling power supply of railways, using fuzzy models and methods of presentation, analysis and choice of controls, is offered.
M. M. Kedrya,M. L. Kumpan
The one-dimensional electromechanical system with the hauling electric drive of successive excitation is examined. Differential equations, flow diagram and transmission function on entrance influence are given. The system operational modes under the deter... see more
A. M. Muha
In the article a comparative analysis of different variants of structured schemes of static converters for traction drive of the promising multi-system electric locomotive is performed. As a criterion of comparison estimation it is offered to use the valu... see more
N. V. Panasenko,Ju. P. Honcharov,V. V. Zamarujev,S. Yu. Kryvoshejev,O. Je. Ivanov,P. P. Morozov,V. H. Sichenko
The structures of sine voltage to quasi-meander shape voltage converters, which allow increasing up to two times the traffic carrying capacity of the feeder mains, are considered.
V. H. Sychenko,D. O. Bosyj
Research results of voltage modes at traction substation buses in primary, regional and traction network are presented in the article. Numeric characteristics of probability density distributions are obtained. Autocorrelation functions of positive and neg... see more
I. P. Korzhenevych
The relation of locomotive mechanical work with the consumption of fuel or electric power is considered.
M. M. Biliaiev,V. M. Lysniak
The 3D CFD model to simulate the pollutant transfer and the process of neutralization of toxic gas after accidents was developed. The model is based on the transport gradient model. The results of numerical experiments are presented.
V. I. Bolshakov,L. S. Savin,O. P. Prykhodko,O. M. Pshinko,Yu. L. Savin,T. M. Dubov,Ye. Yu. Savin
A new techno-economic approach to the use of technogenic wastes in construction is proposed in this article. The theoretical-and-experimental developments on steel corrosion kinetics in the sodium-calcium silicates with the replacement of oxygen anion on ... see more
Y. Y. Luchko,Ye. H. Ivanyk
In the paper the method for determination of the width of crack opening of the ferro-concrete beam of the teeform profile in dependence on the shelf and wall geometrical sizes, external load and reinforcement percent is described.
V. D. Petrenko,V. T. Huzchenko,O. L. Tiutkin,A. M. M. Alkhdur
In the article the results of comparative analysis of two variants of the ground bed strengthening are presented. The mathematical simulation conducted on the basis of finite-element method has given a possibility to testify that both variants of strength... see more
O. S. Raspopov
The topological models for longitudinal and torsional oscillations of rod structures with various concentrated inclusions in distributed mass, stiffness of elastic medium and rod stiffness are done. The high efficiency of application of theory of graphs a... see more
P. Ye. Uvarov
In the article the basic problem of substantiation of parameters of optimization model of organizationaltechnological solutions for investment-building projects in the system of project management is considered.
B. M. Bondarenko,A. P. Razghonov,V. I. Profatilov
The scientific substantiation and choice of optimum characteristics of the optical channel for measurement of dynamic characteristics of an air backlash change between the relay armature and core that allows automating a process of measurement of mechanic... see more
V. Yu. Dub
In the paper the scientific substantiation of diagnostic method for the electromagnetic normal-acting DC relays by means of the neural networks is performed.
I. O. Romantsev,R. V. Rybalka,V. I. Havryliuk
The modification of identification method for linear systems by pulse response that extends its use area is offered. The research results on example of a linear dynamic stationary discrete system are presented.
T. M. Serdiuk,O. V. Zavhorodnii,V. I. Havryliuk
The original automated method of measurement of electrical noise in the return electric-traction network is proposed. It is realized on the base of car-laboratory “Automatics, telemechanics and communication”. The mathematic model of return electric-tract... see more
O. I. Tymoshkin
Problem of elaborating a databank of testable digital elements, units and modules, which are most typical for digital systems, is considered. For this bank an original testable logical circuit of matrix binary multiplier, demanding small amount of hardwar... see more
Yu. M. Ivchenko,V. H. Ivchenko,O. M. Hondar
In the paper the integration of nodes of data transfer network for automated control systems of freight and passenger traffic is proposed. It allows more efficient using the network equipment and communication channels.
V. M. Ilman,V. V. Skalozub
In the article the structures of free interval objects and formal interval grammar are constructed. The grammar structure takes into account the condition of interval compatibility in the chain constructions of language generated.
V. V. Kravets,T. V. Kravets,O. V. Kharchenko
A set of direct and inverse elements are examined and compared with a four-dimensional orthonormal basis. The aggregate of even substitutions of fourth power as a product of two transpositions are formed on this finite set. The finite set of substitutions... see more
A. V. Krasniuk,O. F. Tatarinov,T. V. Ulchenko
AutoCAD possibilities of 3D solid modeling are described in the article. The optimum methods of designing for construction and machine drawing applying are analyzed. The choice of methods for 3D solids drawing is proved by samples.
R. V. Kryvakovska
Main prerequisites for creation of automated control systems for short-term courses of qualification upgrading are analyzed in this article. Also main tasks for the system are considered, the system structure are given. Some issues on its realization are ... see more
N. H. Malych,O. V. Velykyi
The article is devoted to a new system of development of creative abilities of students of engineering profile.
V. O. Pashchenko,N. O. Matvieieva
The neural networks with associative memory have been proposed to estimate the size of surface solidness defect of current-conducting material (article) with the help of the increases of electromagnetic probing impulse area (average amplitude).
S. Yu. Razumov
The method for modeling the creation of high school’s schedule as an assignment task with inhomogeneous parameters, and the basic directions of development are considered.
D. O. Serheiev,O. D. Serheiev,P. L. Havrylov
The work contains a theoretical study of freight car vibrations while a group of the freight cars are under braking by retarder. The purpose is to discover possible causes of derailment. The corresponding analytical description is presented. The solution ... see more
O. M. Shvets
The method of automated diagnostics of electric motors is offered. It uses a neural network revealing the electric motor faults on the basis of analysis of frequency spectrum of current flowing through the motor.
I. S. Shkura
The article is devoted to the main tendencies in the world capital market development.
O. A. Mitiaiev,O. L. Skuibida
An object under research was the refined and modified secondary aluminum alloy ??9?2. An opportunity to improve the quality of secondary aluminum-based alloys up to the level of primary aluminum alloys has been determined experimentally.
F. K. Tkachenko,S. O. Kuzmin,V. H. Yefremenko,V. H. Kazankov
The particularities of the shaping of microstructure of rail steels of marks ?74 and 75???? under continuous cooling with different velocities from austenite interval of temperature are described; the temperature borders of the areas of phase transformati... see more
M. Yu. Filonenko,S. B. Piliaieva
In the paper the influence of preliminary deformation on disintegration of martensite in boron-containing and carbonic alloy is explored. It is shown that at the small degree of deformation (7 per cent) both in low-carbonic and boron-containing alloys the... see more
R. T. Baran,L. M. Baran
The problem of determination of the principles of organizational and legislative basis of the use of aviation in Ukrainian agriculture is discussed in this article. An example of carrying out the aviation-and-chemical works in agriculture, their legislati... see more
Yu. S. Barash,I. P. Korzhenevych,Yu. P. Meliantsova,I. V. Olinichenko
In the article an influence of the financial and economic crisis on the economy ofUkraineand the railway branch is analyzed.
N. D. Volkanova
The ways for improving the management efficiency for transport process at a transport junction are investigated. The methods of introducing the logistic technologies into a process of management by a transport junction are offered.
O. M. Gnennyi
It is found that the cost of lost (damaged) wagons determined in accordance with the operating order of indemnity of losses differs considerably from the market cost. This difference is related to a discrepancy of normativeprices on new wagons to the... see more
V. M. Zahorulko,O. V. Kovalenko
In the article the model of estimation of position of enterprise at the local market of tourist services is offered.
V. A. Zova
In the article the essence of experience is examined, which consists in: the development and introduction of IT in teaching; improving the education quality; the assistance to development of the regional system of adjusting of labor market; and the creati... see more
A. V. Ivanyshcheva
Functioning of production enterprises in the conditions of continuous change of market environment require a special attention of management system to providing their activities. The enterprise financial stability management is one of integral parts of th... see more
A. O. Ishchenko
The structure of managerial system of railway transport ofUkrainein the second half of the XIX-th century is analyzed in the article.
V. I. Kopytko
The logical concept of passenger transportation management on the railway transport is considered. This concept provides the creation of logical centers, which must combine the market mechanism with the government regulation. It is motivated that the effi... see more
N. V. Kudrytska
In the article the author’s definition of transport-and-road complex ofUkraineis given, the basic types of transport are characterized. ?he theoretical-and-methodological aspects of research of transport-and-road complex of Ukrainein the modern economic c... see more
M. I. Mishchenko
The problems of development of All-European transport legislation in the sphere of railway transport since the mid of 60-ies of 21st century till the present time are under study.
V. V. Myamlin
The economic category “profit” is considered. The discrepancies and inconsistency of the existing financial-andeconomic model of management based only upon the “profitable” paradigm is demonstrated. It is shown how a “profit” affects a discrepancy between... see more
O. M. Pshinko
The indices of train traffic safety on the railways ofUkraineare analyzed. The dynamics of investments to the traffic safety measures on railway facilities is considered.
N. V. Skydonenko
In the article the influence of modern processes in the world economy on forming a transport provision in the field of tourism is analyzed.
O. M. Stasiuk
The estimate of outsourcing possibilities on the railway transport of Ukraine is realized. The kinds of activities, which are promising for transfer through outsourcing to small enterprises, are proposed.
S. Yu. Shevchenko
The factors that influence the reproduction process of fixed capital have been analyzed in the article. The priorities of investment reproduction, funding sources and methods on the railway transport have been studied. The effects of investments in railwa... see more