Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan

About: Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan is a education organization based out in Dnipro, Ukraine. It is known for research contribution in the topics: Track (rail transport) & Bogie. The organization has 736 authors who have published 655 publications receiving 1468 citations. The organization is also known as: Institute of Railway Transport Engineers.

Anthropological comprehension of a woman-author as the subject of culture through the prism of language and literature (gender aspect)

Abstract: Purpose. To study the phenomenon of a woman-author as a subject of culture and philosophy from a development of literary aspect in the works both Western and Ukrainian scientists. To define the significance of the philosophical representation of the gender stereotypes to reconsider their place and role in the socio cultural discourse. Theoretical basis. To investigate the theoretical framework in the postmodern philosophy the cross-disciplinary approach is used. The comparative approach is methodologically important to clarify the problems concerning a woman-author as a subject of culture. It is underlined that the boundary line between literature and philosophy is movable, which coincides with the shapes of the human experience. Based on the conviction that gender has integrated into all social relations, that means it is a gender context of any social interaction, it is important to emphasize the productivity of a new scientific methodology of sociocultural constructing of gender. Originality. Is in systematic literary analysis of Ukrainian and Western women’s prose as specific philosophical phenomenon. It was proved that the investigation of women’s literature, its identity is an important focus of both philosophy and culture, which helps find philosophical problems in literary texts. Besides the analysis of gender implications in texts allows to start theoretical dialogue on gender problems, which means the participation in the discussion about the targets of our cultural life. Conclusions. It has been proved that literature of the ХХ th -XXI st centuries is characterized by strengthening interaction between philosophical systems and literary works that reflects mainstreaming of intellectual and thinking bases. It was revealed that women’s philosophical and literary conceptions have created a unique woman’s world of being and an image of "a new woman", thus leading the way towards the new stereotypes based on comprehension that sex differences should not be determining factors both in cultural and social coexistence.

Research of the Reduced Mass of the Railway Track

Abstract: In an overall view, a vehicle is described as a system of bodies interconnected by elastic and dissipative couplings. Bodies have a mass concentrated at a point, the movement of which describes their motion. Certain difficulties arise when introducing a railway track into such models. While interacting with the rolling stock, the track operates as an elastic body, and its mass is specified as reduced to the point of interaction. The purpose of this work is to provide a reasonable value of the reduced mass of the railway track depending on its parameters. The task is solved by applying a spatial model of dynamic deformations of the railway track on the basis of the elasticity theory. Such an approach makes it possible to determine which part of the railway track interacts with the wheel based on the propagation of deformations as elastic waves.

Determination of characteristics of throttling device for pneumatic spring

Abstract: Purpose. This paper focuses on determination of the dependence of the working medium flow on the capacity of the throttling device, its geometric features and the pressure difference in the pneumatic spring cylinder and in the auxiliary reservoir. Methodology. Calculation of the dependence of the working medium and pressure drop is performed in two ways: 1) by numerical simulation of a stationary gas flow through a throttling element; 2) its analytical calculation expression using empirical relationships (control calculation to evaluate the reliability of numerical simulation results). For the calculation, three models of throttling devices were chosen. Dependence of the flow rate of the working medium on the capacity of the throttling device and its geometric features was determined based on the approximation of the dependency graphs of the pressure drop against the mass flow rate of the working medium. Findings. We obtained graphical dependencies between the pressure drop and the mass flow rate of the working medium from the two calculation options. Based on the results of calculations performed with the help of a software package with visualization of the results, we calculated a proportionality coefficient that describes the dependence of the working medium flow on the throttling device capacity and its geometric features for each of the throttling elements considered, with three degrees of closure. The air flow values, obtained by numerical simulation, are greater than the flow rates obtained from semi-empirical formulas. At the same time, they are in good qualitative agreement, and the quantitative difference averages 25%, which can be regarded as confirmation of the reliability of the nu-merical model. Based on the calculation results, we plotted the proportionality coefficient graphs against the degree of closure of the throttling device. Originality. The work allows determining the degree of influence of the frictio-nal component on the variation of the pressure difference in the pneumatic cylinder and the auxiliary reservoir of the pneumatic suspension system. Also, the work proposes a method to determine the dependence of the working medium on the capacity of the throttling device and its geometric features. Practical value. The ability to predict the operating parameters of the pneumatic system depending on the pneumatic resistance of the throttling device will improve the car running characteristics, increase the comfort of passenger transport, and also reduce the wear of the rolling stock and track gauge due to vehicle-track interaction.

The effectiveness evaluation of smoothing filters traction substations dc

Abstract: In this article the results of experimental estimation of functioning efficiency of the passive ripple filters of traction d.c. substations are presented.

Designing of lightweight concrete with secondary resources in dnipropetrovsk region

Abstract: The problems of utilization of the local industry after-products in the easy concretes and efficiency improvement for using the cement by providing of rational grain composition of the components are presented.