49 articles in this issue
Ye. P. Blokhin,N. Ya. Harkavi,K. I. Zheleznov,L. V. Ursulyak,Ya. M. Romanyuk
The description of the developed computer system possibilities and its use to solve problems of motion safety and stability is given.
O. M. Bondarev,V. L. Gorobets,S. V. Myamlin,E. O. Pysmennyi,I. E. Skogarev,D. V. Ghorobets
In the article the analysis of comparative tests on determination of remaining tensions in the semitreated axles produced according to different technologies is conducted and the conclusions re. availability and stability of the new production technology ... see more
M. L. Korotenko,R. B. Granovskiy,S. A. Kostritsa,O. V. Sultan,V. V. Glukhov,I. V. Klymenko,N. Ya. Harkavi,Ye. F. Fedorov,V. V. Karpenko
There are presented some examples where the primary conclusions on features of the objects tested were wrong because of using the unwarranted idealized models.
O. V. Shatunov,M. A. Grichanyj,P. O. Yahoda,V. Yu. Pidlubnyi,O. A. Andreev
In the article the results of theoretical and experimental researches of the stressed state of structure of frame and body of tank models 15-440 and 15-1597 are presented.
V. V. Artemchuk
Features of technologies of putting the gas-thermal coatings are considered in the article. Some examples of using the modern sprayed materials are presented as well as the comparative analysis of basic methods of gas-thermal spraying is conducted on some... see more
S. V. Doroshko
The adaptive system of the organisation of car traffic volumes, which in the conditions of non-uniformity of the traffic volume capacity and transport demand is one of measures of increasing the efficiency of transportations and acceleration of a car turn... see more
D. M. Kozachenko
Research of braking mode optimization under uncertainty of information about rolling down cuts and inaccurate realization of control actions by retarder positions is presented in the paper. The probability criterion for evaluation of conditions of sorting... see more
V. V. Myamlin
A critical analysis of existing methods for repair of freight wagons is presented. The conclusion, that with probability nature of repair activities the “classic” type of a “rigid” production line with regulated step in long-term outlook is inexpedient, h... see more
A. L. Pulariya,M. E. Serdyuk
The problem of processing images obtained as a result of digital photographing during the railway rolling stock technical diagnostics, using the method of skeleton interpolation, is considered.
A. M. Afanasov
The analysis of power indices of process of compensation of magnetic and mechanical losses in the charts of mutual loading of hauling electric motors with the use of electric power source is resulted.
L. V. Dubinets,O. O. Karzova,Yu. S. Bondarenko
In the article the issue of influence of vortical currents on rate of change of short circuit current is considered, a mathematical model for the calculation of short circuit currents in the traction mode in the power circuits of DC electric rolling stock... see more
M. O. Kostin
A comparative characteristic of different concepts and expressions for determination of reactive power in the circuits with non-sinusoidal electric values has been given. For the first Ukrainian electric locomotives of DE1 type with the system of DC elect... see more
A. V. Petrov
The methods for determination of spectral composition of random functions of voltage and current of traction substation feeder are proposed. The low frequency components of their spectra (interharmonics) are obtained.
I. P. Korzhenevych,S. A. Lykova,A. A. Mamytko
The possibility of changing the outer rail superelevation along constant radius curves is considered.
D. M. Kurgan,M. A. Zayats
A technique of rational distribution of train traffic streams on the system of railways by a few indices is presented.
M. B. Kurgan,N. P. Khmelevska,M. M. Cherniakov
The analytical dependences of electric energy losses on average track section gradient values, train mass and freight traffic density are determined.
K. V. Moyseyenko,V. P. Gnatenko
The results of full-scale strength test of the switch type R65 mark 1/11 of the design Dn 300 are described.
V. V. Rybkin,K. L. Kalenyk
The paper analyzes the impact of deviations in terms of lateral turnouts for traffic safety and the magnitude of lateral force. The results of performance studies of these deviations are presented. The preconditions for rationing the permissible traffic s... see more
V. E. Artyomov
In the article some aspects of the Euler dynamic equations applied to modeling the three-dimensional bar systems are presented.
P. V. Bezditko,A. V. Krasnyuk,A. D. Malyi,N. P. Bocharova
In the article the technologies of transformation of a perfect polyhedron (tetrahedron) into semi-perfect one, starlike and imperfect polyhedrons by the methods of computer graphics are presented. The authors have concluded that such transformations of so... see more
V. D. Petrenko,V. T. Guzchenko,O. L. Tiutkin,A. M. M. Alkhdour
In the article the results of analysis of parameters of experimental research of the geotextile-reinforced ground bed are presented.
O. S. Raspopov
On the basis of conducted analysis of scientific literature it is noted that the theorems and algorithms used in theories of graphs and automata can serve as a basis for the refinement and development of generally accepted theories and methods in the mech... see more
The dynamics of spatial beam systems using the theory of graphs and automats is considered. It is shown that the structural composition of multidimensional models can be set using the spatial matrices. An efficient algorithm for the separation of the syst... see more
B. V. Savchinskiy
The article examines the issues of design and the technology of strengthening the reinforced concrete bridges made of composite materials.
T. V. Ulchenko,Ju. G. Bereghij,B. G. Klochko
The physical-and-mechanical properties and chemical resistance of some polymer coatings based on polyurethane, vinyl-ester resins and polyurea have been compared.
F. V. Jacko
This paper presents the models and algorithms for determination of longevity of protective coating of reinforced concrete parts of structures by a statistical (Monte-Carlo) method.
M. M. Biliaiev
The basic principles of development of the software AIR-3 aimed at simulation of the atmosphere chemical pollution after accidents are under consideration. The modeling is based on the numerical integration of the K-gradient transport model. The results o... see more
M. M. Biliaiev,P. B. Mashihina
The 3D numerical model was used to simulate the toxic gas dispersion over a complex terrain after an accident spillage. The model is based on the K-gradient transport model and the model of potential flow. The results of numerical experiment are presented... see more
I. V. Zhytchenko,V. O. Petrenko,S. Z. Polishhuk,A. O. Petrenko
The parameters of microclimate in computer classrooms during a warm season were under investigation.
S. Yu. Buryak
The method of mathematical modeling of switch eclectic drive in the system MATLAB + Simulink is presented.
A. A. Bosov,K. V. Yelisieienko
The variant of calculus of functions of a set and its application are offered.
A. A. Bosov,Yu. V. Chibisov
There was suggested the use of multigraphs in the rational distribution of trainflows as a task of vector optimization.
T. F. Mykhaylova,M. S. Karavaieva
The model of effective expansion of the enterprise production by using econometric modeling and dynamic programming is built.
O. A. Nazarov
The use of systems of the quasi–continuous adjusting the wagon speed on the marshalling tracks contributes to the improvement of indices of occupation quality of marshalling tracks with wagons. These indices characterize different sides of the occupation ... see more
T. E. Dorohan
The article is devoted to the problem of phase composition formation in molybdenum and tungsten electrodeposited alloys as well as to the comparison of data concerning the structure of alloys obtained by means of electrocrystallization and through high-ra... see more
L. A. Muradia,V. H. Anofriev
The article considers the problems of damages of a tread contact surface of railway wheels. The analysis of occurrence of defects of wheels in operation is carried out. The comparison of wheels with various hardness (mark 2 and mark ?) is executed.
A. E. Ostrovska,I. P. Volchok
Investigation of the influence of intermetallic phases on the mechanism of fatigue fracture of the secondary aluminum alloys was made.
O. L. Skujbida,I. P. Volchok
The effect of refining-modifying treatment of secondary aluminum alloy ??5?2 was researched. The modifier 10…20 % Na2CO3, 15…20 % SrCO3, 12…20 % SiC, 3…8 % Ti, 0,5…2 % C, the rest S was worked out and used. The improvement of tensile strength and plastici... see more
E. V. Sukhova,Yu. V. Syrovatko
The structure and properties of Fe-B-C alloys containing 1.8 weight per cent ?, 3.0 weight per cent ?, including those that were additionally alloyed with 0…1 weight per cent ?, 0…0.5 weight per cent Mo, were investigated in this work. The alloys were stu... see more
N. Yu. Filonenko,O. Yu. Bereza
The thermodynamic functions of iron boride and carbon-alloyed one Fe2(??) are considered. It is shown that iron boride Fe2B is quite thermodynamically stable within the temperature range from 1023 to 1223 K.
I. M. Aksonov
New indices for estimation of the passenger coach stock operation of different owners in various communication kinds are offered.
R. T. Baran
The purpose of reforming the air transport in Ukraine is the implementation of market economic transformations in economic and financial methods of the management of civil aviation operational firms, which were still formed on the basis of Soviet plan-arm... see more
Yu. S. Barash,N. O. Hayduk,Kh. V. Drebot
The basic aspects of international passenger transportations in Ukraine are represented. The analysis of present situation in these transportations is carried out. Some variants of solving the problems of passenger transportations in an international comm... see more
Yu. S. Barash
The article is devoted to analysis of reforming the railway transport in countries of the former USSR. Demerits and advantages of this process are determined.
N. I. Verhoglyadova,D. L. Levchynsky
The paper is devoted to an analysis of actual condition of a system of formation of investment projects on the complex reconstruction of territory of great cities as well as to the principles and order of planning and organizing the investment activity ai... see more
V. O. Hneusheva
Households are considered as a separate sphere of the financial system of Ukraine, which carry out active influence on the development of domestic economy. The basic functions of housekeeping in a market economy are shown.
D. O. Dyl
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O. V. Lepokhina
The application of the strategic planning and strategic management is considered in the article. The introduction of progressive technological processes on a concrete enterprise is researched. The dynamics of these processes at industrial enterprises of c... see more
Yu. T. Trush,H. O. Korol,M. V. Kucynska
The comparison of methods of extra charge of wear of the fixed assets in budgetary establishments and their amortization in business enterprises is conducted. The procedure of choice of amortization method for an object of the fixed assets in business ent... see more