58 articles in this issue
V. I. Havryliuk,V. Yu. Dub
The analysis of existing methods of construction of diagnostic tests of discrete devices is carried out, algorithms and the program of construction of checking and diagnostic tests for the relay-contact equipment of railway automatics are developed.
V. V. Bezrukov,K. V. Honcharov,D. F. Ivakhnenko
Basic methods of digital design of the analog system – that of digitization of differential equation, of digitization of impulsive description and a bilinear one – have been considered. On the example of an oscillating link, as an analog prototype, errors... see more
V. V. Beliaieva
A numerical model to simulate the process of pollutant transfer in rooms was developed. The numerical simulation is carried out using 3D models of pollutant transfer and potential flow. The implicit finite difference schemes are used. The results of numer... see more
M. M. Beliaiev,I. V. Kalashnikov
A numerical model to calculate the process of ground waters protection from pollution with the use of wells has been proposed. The model is based on the 2-D equations of filtration and admixture transfer. Results of numerical experiment are presented.
M. M. Beliaiev,V. M. Lysniak
A 3-D computer model has been developed to simulate the atmosphere protection from pollution with the use of vertical air jet in case of movement of a toxic cloud. The model is based on the gradient transport model and potential flow model numerical integ... see more
M. M. Beliaiev,I. Ye. Melnyk
A 2-D computer model has been developed to simulate a dissolution process in a mixing chamber. The model is based on the gradient transport model and potential flow model numerical integration. Results of numerical experiments are presented.
L. V. Dubinets,O. O. Karzova,O. L. Marenych,O. I. Momot
In this article the following problems have been dwelled upon: the level of standardization of relays in the rolling stock operation schemes and the possibility of its significant increase, the latter task being important for two reasons: the control syst... see more
V. H. Kuznietsov,R. S. Mytsko,D. O. Bosyi
An indirect method of electric power losses determination in catenary has been examined. An example of solving such task with the help of specialized imitation model has been given and results of statistic analysis have been presented. Possible ways of us... see more
M. B. Kurhan,M. A. Zaiats
The authors have developed a method of forming a ratoinal scheme of stage-by-stage integration of services on parallel-bound railroad directions, when high-speed services are introduced on one of them.
M. B. Kurhan,D. M. Kurhan,V. I. Kharlan
Expediency of application of rolling stocks with tilting cars on the rail section Kiev–Dnipropetrovsk has been considered. Is has been shown that the use of such cars cannot be efficient without a reorganization of the track plane and additional investmen... see more
I. P. Korzhenevych
The article examines drawbacks of existing methods of rail curves survey and proposes new ones, providing greater accuracy of the measurements.
B. Ye. Bondar,A. A. Bosov,D. V. Bobyr
A method of determination of a set of incomparable movement trajectory variants has been considered.
A. A. Bosov,P. V. Bekh
The article offers a method of selecting a rational route of freights delivery by rail by means of vectoral optimization.
I. S. Dmytriieva,I. M. Kukushkina
The article offers an economic & mathematical model of trains formation plan in the shape of a linear programming problem.
Radisav Vukadinovic,Zoran Cekerevac
The paper defines and shows a model of interpreting casualty occurrence as a factor of operational safety and risk of the rail traffic. A special emphasis is put on assessing the level of rail traffic safety on the example of the Serbian Railways. The pap... see more
I. V. Zhukovytskyi,V. V. Skalozub,O. V. Vetrova,O. L. Zinenko
In the paper the methods for construction of improved automated system of optimum management of locomotive depot operation have been offered. The described method of modeling the operative planning of work of the locomotives and locomotive brigades is bas... see more
D. M. Kozachenko,M. I. Berezovyi,R. H. Korobiova
Based on imitation modelling of marshalling hump operation, there has been obtained a statistic model of intervals between cuts on the separating switches, determined the essential factors and analyzed their influence onto the size of the separating inter... see more
D. O. Ostapets
The known algorithms of operating the speed regulation systems on industrial railway transport, the method of data calculating for adjustment of the regulators, as well as the consequence and comparable results of imitation modeling of their operation, ha... see more
O. Yu. Papakhov,A. M. Okorokov
The article considers influence of the cars overwork equivalents and the saving of the hours-per-locomotive and the hours-per-brigade on calculation of the trains forming plan and the change of these values in conditions of the transport market.
O. Yu. Papakhov,O. M. Lohvinov
Basing on the studies of existing methods of train formation plans calculation, the authors have proposed creating a new method of calculating the plan of forming the single-group through trains within the section of predetermined railway stations, and al... see more
V. E. Parunakjan,V. Gh. Dzhenchako
The process of warming-up of a frozen load has been considered. A method is developed to determine duration of the warming-up process depending on the size of the frozen layer.
I. Ye. Levytskyi
In the paper the economic and legal aspects of interaction between railway and sea transport modes are ?onsidered. The measures for improving the economic efficiency of combined transportation are proposed.
O. S. Savenko,S. I. Muzykina
The paper tackles the problem of the time «gaps» in a train schedule. The solution of this complex task needs consideration of the conflicting requirements and working conditions of all the divisions and services of railway transport.
O. M. Babaiev,M. V. Bodnia,M . Ya. Harkavi
The article provides theoretical and experimental determination of the values of specific resistance to movement, which have been compared with the dependencies, used by the railways ofCIS,UKandPoland.
O. M. Babaiev,M. O. Yakovenko
The authors have analyzed the efficiency of a car brake, being equipped by either compositional or cast-iron shoes, with and without consideration of the under-car generator movement resistance.
H. H. Basov,V. I. Nesterenko,M. L. Burka
The article considers the issues of determining specific parameters of rail vehicle damping. As a result of theoretical and experimental research working formulas for determination of the relative damping coefficient for vehicle spring suspension have bee... see more
Ye. P. Blohin,M. L. Korotenko,S. V. Miamlin,R. B. Hranovskyi,V. L. Horobets,N. Ya. Harkavi,Ye. F. Fedorov,V. V. Kliuievskyi,Yu. M. Cherkashyn,L. A. Manashkin
A method of experimental assessment of anti-fatigue strength of a structure with the use of three-element fork of deformations has been offered.
Yu. Ya. Vodiannikov,S. O. Stoletov,S. V. Kukin,O. V. Hrechko
The results of temperature measurements in the brake disc of a passenger car within the speed range of the emergency braking (40…120 km/h) are given in the article. The temperature measurements were made at the entrance, mid-range and exit of the disc fro... see more
O. M. Kirieiev
The article presents the results of experimental and theoretical research on application of ?DD-diagrams for estimation of admissibility of defects in ultrasonic control of the rolled wheel centers in radial direction. The application of this method will ... see more
V. O. Poliakov,N. M. Khachapuridze
The article substantiates practicability and expediency of terminal operation of a magnetic-levitation train with the use of a linear synchronous motor, examines quality requirements to the movement of such train and the limits its controller and also dev... see more
V. I. Prykhodko
The article describes calculation of the main standard dynamic characteristics for a new passenger car.
O. I. Yalovoi
The paper presents a mathematical model of spatial oscillations of six-axle specialized railway platform for transportation of scrap. The model is used for determination of dynamical indices of the specialized platform at the design stage.
O. M. Havrysh,S. O. Yakovliev,M. V. Borenko,V. Ye. Humeniuk
The article gives estimations of technical level of construction and restoration machinery, on the basis of which the methods of technical equipment of the Special State Transport Service and practical recommendations thereto have been developed.
O. V. Hromova
The article considers application of the finite-element analysis method of the ANSYS software for solution of tasks related to structural compatibility of the materials in the basis of a building structure – the old concrete and repair material vs. the ne... see more
L. O. Hubacheva
The simulation of a rolling-up process after preliminary tw?angle bending of the billet into a bushing is studied. A selection of optimum sizes for the billet, providing closing of a joint, has been made.
A. M. Zinkevych
The structure of successive optimization is considered on the example of development of formula for injection repair mixture in the shape of concrete-based dry mortar.
B. H. Klochko,M. O. Prylepova
The basic questions of computer-integrated calculation of the project parameters are examined, in particular, the project cost in its integrity with other parameters. The project cost is one of the measurable, controlled and manageable parameters. From he... see more
V. O. Momot
The article presents results of the studies regarding development of high-agility mortars for repair of concrete and stone-based transport erections by way of subwater injecting. Basing on results of the study, recommendations have been given for fabricat... see more
M. I. Malkov,O. O. Stepanenko,V. F. Khudenko,A. V. Radkevych
The article considers questions of precise determination of the values of operational capabilities of the State Special Transport Service’s structural subdivisions for each day of the special period, taking into account potential efficiency of the manager... see more
B. V. Savchynskyi
The basic criteria for assessing reliability and durability of ferr?concrete road bridges are generalized. Recommendations for increasing reliability and durability of such bridges have been given.
S. S. Semenets,V. P. Afanasiev
Conditions of serviceability of the basic constructive elements of steel tanks for mineral oil while in service are formulated. The new models of operational reliability giving the generalized estimation of influence of factors of initial deficiency, oper... see more
M. M. Sendetskyi
The article considers theoretical grounds for efficiency criterion of assembly-making/laying complexes being formed, with subsequent development of methods of technical means selection.
B. D. Sukhorukov
The article proposes a method of constructing the transversal lines of distribution ratios influence for the span structures of road bridges, based on the results of just one application of tester loading.
?. L. Tiutkin
The article presents the results of studying the basic parameters of explosive influence for practical calculations of durability and stability of tunnel constructions. The obtained dependences of basic parameters are functions and have an applied nature.
D. V. Bezuhlyi,T. V. Tiutiunnyk
The article examines the questions of the needs for improving the management system at a modern enterprise by introduction of controlling. In constantly changing economic conditions, the problem of the enterprise survival and prevention of its bankruptcy ... see more
S. V. Herasymova
Such category as «economic interest» is examined as an element of consumerism. The accent is made on the economic interests which are pursued by the subjects of a joint-stock company during realization of investment activity. In relation to harmonization ... see more
M. V. Gnennyi,O. M. Gnennyi
With development of market relations the increasing actuality, including on a railway transportation, questions of assessment of actives is obtained. Assessment of actives is necessary for their book keeping, selling, rent, deposit etc., and also for priv... see more
O. M. Gnennyi,I. I. Sydorenko
A method of determining the rolling stock performance for a passenger train with the use of a database – a trains traffic schedule – has been proposed.
Zoran Cekerevac,Slobodan Ristic
After the analysis of the concept and meaning of management, the paper further analyzes the traits and characteristics of the manager and good management. A special emphasis is put on the specific characteristics of management within railway transportatio... see more
S. V. Kalambet,L. V. Pryvalova,M. M. Serhienko
?rticle is devoted to working out the systematic approaches to locomotive enterprises expenses analysis in railway transport. Its main idea lies in the necessity of both conducting the full expenses analysis and the analysis of particular transportations,... see more
S. O. Koretska
The article represents a methodical kit, allowing for quantitative estimation, analysis and prognostication of different options for forming the strategy of the logistic inventories control system at an enterprise.
I. V. Malyshko,L. I. Malyshko,L. V. Pylypenko,V. I. Romanko
The article presents analysis of energy consumption for train traction purposes and for supplies of other consumers in railway industry ofUkraineduring the years of independence. It gives a separate analysis of energy-saving measures.
V. V. Skalozub,Yu. S. Barash,I. M. Vyshniakova
The method of decline of unprofitable of passenger transportations is offered due to drafting of optimum plan of forming of passenger trains. At forming of composition of passenger trains demand is taken into account to directions of the following of trai... see more
P. O. Fisunenko,L. Ye. Kosenko,M. O. Bolsunova
A general view of the system of the economic management of an enterprise is presented. The subsystem of production costs management is examined in details. The goal and criteria of this system are defined. The requirements for the design of accounting and... see more
I. M. Tsurkan
The article has analyzed the Ukrainian taxation system in terms of creating favorable tax conditions for industrial development. On the basis of Ukrainian tax system analysis and generalization of foreign experience in the field of stimulating industrial ... see more
A. A. Shulha
The article studies the influence of indirect taxes, excises in particular, on the financial and economic activities of enterprises in condition of economic transformation inUkraine.
O. V. Shulha,Ye. O. Toporkova
The article is devoted to the issue of operational cost management which consists in the search and achievement of the optimum level both for the enterprise as a whole and for its structural subdivisions. Studies of the issue of operational cost managemen... see more
Ye. O. Yakovenko
An economic and mathematical model has been developed which can be used for improvement of the mechanism of hedging investments on the financial market with the aim of drawing an economic profit while using modern types of monetary instruments.