Showing papers by "Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan published in 2009"
25 Feb 2009-Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport
TL;DR: In this article, the authors propose a new approach to solve this problem, which is based on the idea of using the information of the user's interaction with the system. But this approach requires the user to interact with the server.
Abstract: У зв’язку з розвитком контейнерних перевезень різко зріс попит на спеціалізований рухомий склад, найкращим чином пристосований для перевезення контейнерів. Стаття присвячена огляду вагонів-платформ для перевезення контейнерів, пропонованих вітчизняними виробниками. Приведена порівняльна характеристика 80-футових вагонів-платформ. Також розглянуті зчленовані платформи, широко використовувані в Північній Америці і Західній Європі, а також їх аналоги, розроблені підприємствами України і Росії.
4 citations
25 Oct 2009-Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport
TL;DR: In this article, the authors discuss the effect of different types of labels on the performance of a system. But they do not discuss the impact of different labels on its performance in terms of performance.
Abstract: В статье проведен анализ факторов, влияющих на износ пары «колесо – рельс», и сделан вывод о целесообразности создания в узле «боковина – букса» кинематической пары третьего рода.
3 citations
01 Jan 2009-Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport
TL;DR: In this paper, a 2D numerical model to simulate the pollutant dispersion over complex terrain was proposed, based on the equation of potential flow and equation of admixture transfer.
Abstract: The 2D numerical model to simulate the pollutant dispersion over complex terrain was proposed. The model is based on the equation of potential flow and the equation of admixture transfer. Results of the numerical experiment are presented.
3 citations
01 Jan 2009-Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport
TL;DR: In this article, the mathematical methods of calculation and analysis of patent fund enable estimation of progress of technical object trends using these methods, certain directions of development of biaxial bogie of freight carriage, in particular promising ones and directions which exhausted the potential, are determined.
Abstract: The mathematical methods of calculation and analysis of patent fund enable estimation of progress of technical object trends. Using these methods, certain directions of development of biaxial bogie of freight carriage, in particular promising ones and directions, which exhausted the potential, are determined.
3 citations
01 Jan 2009-Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport
TL;DR: In this paper, different estimation methods of technical and technological parameters of railway stations are considered, and results of the parameters comparison obtained on the basis of the station work graph and simulation with functioning parameters of a real station are presented.
Abstract: Different estimation methods of technical and technological parameters of railway stations are considered. Results of the parameters comparison obtained on the basis of the station work graph and simulation with functioning parameters of a real station are presented.
2 citations
25 Aug 2009-Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport
TL;DR: In this article, the authors proposed a method to improve the quality of the information provided by the users by using the information of the user's interaction with the service provider and the system itself.
Abstract: Разработана методика проведения экспертизы оценки надежности функционирования системы автоматизированного управления тягового электроснабжения электрического транспорта с целью организации работы со специалистами-экспертами и обработки мнений экспертов. Данная методика дает возможность принимать решение о планировании и проведении экспертизы и формировании экспертной группы, проводить анализ полученных результатов и подготовку выводов для лиц, которые принимают решение по повышению надежности функционирования системы автоматизированного управления тягового электроснабжения.
1 citations
01 Jan 2009-Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport
TL;DR: The mathematical simulation conducted on the basis of finite-element method has given a possibility to testify that both variants of strengthening influence positively on the stressed-and-strained state of the ground bed.
Abstract: 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 strengthening influence positively on the stressed-and-strained state of the ground bed.
1 citations
01 Jan 2009-Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport
TL;DR: In this article, the authors discuss the effect of different types of information on the quality of the information received from the users. But they do not discuss the impact of different kinds of data on the performance of the user.
Abstract: Для решения многокритериальной задачи повышения надежности функционирования системы управления электрического транспорта на основе экспертной информации рассмотрены многочисленные методы повышения надежности. Рассмотрена информация, которая позволяет обоснованно выбирать метод повышения надежности функционирования системы управления.
1 citations
01 Jan 2009-Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport
TL;DR: In this article, the results of experimental and theoretical research of stressed andstrained state of flexible ferro-concrete structural member provided with the conventional steel reinforcement and subjected to bending as per Modification № 1 to SNiP (construction regulations) 2.03.01-84.
Abstract: This article presents the results of experimental-and-theoretical research of stressed-and-strained state of flexible ferro-concrete structural member provided with the conventional steel reinforcement and subjected to bending as per Modification № 1 to SNiP (construction regulations) 2.03.01-84*. Concrete and ferro-concrete structural members.
1 citations
01 Jan 2009-Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport
TL;DR: In this paper, a computer-aided simulation model is presented that can be used for the research of the railway traffic organization and also for the estimation of influence of the train parameters on the operation indices of railway lines and directions.
Abstract: The computer-aided simulation model is offered that can be used for the research of the railway traffic organization and also for the estimation of influence of the train parameters on the operation indices of railway lines and directions.
1 citations
01 Jan 2009-Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport
TL;DR: In this article, a mathematical model for prediction of change of running time and mechanical work of the locomotive traction force at occurrence of restrictions of the train traffic speed is suggested. But the model is limited to the case of a single locomotive.
Abstract: The mathematical model for prediction of change of running time and mechanical work of the locomotive traction force at occurrence of restrictions of the train traffic speed is suggested.
01 Jan 2009-Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport
TL;DR: In this paper, the main results of experimental investigations made by the author on distribution of static pressure from granular material in a covered capacity structure are presented, and the investigations were conducted on the small-sized steel constructions and provided for the variation both a row of constructive parameters of the experimental installation and the types of granular materials.
Abstract: In the paper the main results of experimental investigations made by the author on distribution of static pressure from granular material in a covered capacity structure are presented. The investigations were conducted on the small-sized steel constructions and provided for the variation both a row of constructive parameters of the experimental installation and the types of granular material.
25 Feb 2009-Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport
TL;DR: In this article, the question of increasing the reliability of electromagnetic contactors of electric rolling stock is examined, and the authors propose a method to increase the reliability by modifying the contactors.
Abstract: The question of increasing the reliability of electromagnetic contactors of the electric rolling stock is examined.
01 Jan 2009-Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport
TL;DR: In this article, the mathematical description of force interaction of wheels and rails is offered as well as the description of some indices of traffic safety of rail vehicles is performed, and the authors also present a traffic safety index for rail vehicles.
Abstract: In the article the mathematical description of force interaction of wheels and rails is offered as well as the description of some indices of traffic safety of rail vehicles is performed.