Results 31 to 40 of about 266,284 (255)

On the issue of choosing vertical and horizontal connections in a bogie for freight cars of high-speed trains

Вестник Научно-исследовательского института железнодорожного транспорта, 2021
To increase the competitive advantages of rail freight transportation, the long-term development program of the Russian Railways provides for an increase in the speed of freight trains.
G. I. Gadzhimetov, G. I. Petrov, Yu. A. Panin, I. E. Il’in   +3 more
doaj   +1 more source

Realizing stock market crashes: stochastic cusp catastrophe model of returns under the time-varying volatility [PDF]

, 2013
This paper develops a two-step estimation methodology, which allows us to apply catastrophe theory to stock market returns with time-varying volatility and model stock market crashes.
Barunik, Jozef, Kukacka, Jiri
core   +3 more sources

Calculation and experimental evaluation of bogie frame and intermediate frame life of an eight-axle diesel locomotive

Вестник Научно-исследовательского института железнодорожного транспорта
Introduction. Long-term locomotive operation and safety considerations require new approaches to extending the life of its basic components operating under variable loads.Materials and methods.
S. V. Chunin, A. S. Gasyuk, M. V. Timakov, D. M. Fazliakhmetov, E. V. Muravlev, O. A. Lobachev   +5 more
doaj   +1 more source

Study of the Aerodynamic Performance of Pantograph Bowhead with Serrated Lower Surface in the Thermal Management Systems of the High-Speed Train Electrical Devices

Energies, 2023
The thermal management problems of traction drive systems for high-speed trains are of great importance for the operation reliability of high-speed trains.
Bo Cai, Zhongkai Wu, Jiyou Fei, Chang Liu, Zhongzhen Guan   +4 more
doaj   +1 more source

Study on the Characteristics of Trackside Acoustic Flow Field of High-Speed Train under the Influence of Crosswind

Sensors, 2023
During the on-track acoustic detection process, a potential flow model and an acoustic finite element mathematical model based on synthetic wind are utilized, taking into account the combined effects of vehicle speed, wind direction angle, and crosswind ...
Xing Zhao, Lei Zhang, Lin Li, Qiying Feng   +3 more
doaj   +1 more source

Memory and Resting‐State Connectivity in Acute Transient Global Amnesia: A Case–Control fMRI Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background and Objectives Transient global amnesia (TGA) is a striking model of isolated amnesia. While hippocampal lesions are well described, the network‐level mechanisms and the precise neuropsychological profile remain debated. Our objective was thus to characterize functional and neuropsychological correlates of acute TGA and their ...
Elias El Otmani, Emmanuel Barbeau, Béatrice Lemesle, Emilie Milongo‐Rigal, Sophie Fernandez, Sandrine Charpentier, Jean‐François Albucher, Nicolas Raposo, Fabrice Bonneville, Patrice Péran, Jérémie Pariente   +10 more
wiley   +1 more source

Loading of cast supporting structures of three-piece bogie 18-100 in the presence of defects on the surface of wheel rolling

Вестник Научно-исследовательского института железнодорожного транспорта, 2016
Results of the loading study of support structures of bogies 18 - 100 with the presence of defects in the form of slides and uneven wheel wear on the rolling surface were shown. Research carried out by strain measurement.
O. G. Krasnov, G. S. Nozdrachev, А. S. Gasyuk   +2 more
doaj   +1 more source

Analysis of Acoustic Flow Field Characteristics of Key Components of High-Speed Train Bogies

Applied Sciences, 2023
In this paper, we aim to address the challenge of airflow interference during fault detection in high-speed train bogies by introducing a flow field and investigating the characteristics of the sound field distribution of critical components under its ...
Xing Zhao, Xiaoyang Jia, Lin Li, Hanyu Wang   +3 more
doaj   +1 more source

Rolling stock quality - Improvements and user willingness to pay. [PDF]

, 1998
This study has estimated monetary valuations of various types of rolling stock and stock related attributes in relation to each other. It has used a combination of Revealed Preference (RP) and Stated Preference (SP) methods.
Wardman, M., Whelan, G.
core  

Synthesis of a Novel Thermoresponsive S53P4 Bioactive Glass Extract–Poloxamer 407 Injectable Hydrogels: Assessment of Biocompatibility and Antimicrobial Properties

Advanced Engineering Materials, EarlyView.
This study investigates innovative thermoreversible hydrogels derived from S53P4 bioactive glass extracts to aid in the healing of infected diabetic foot wounds. These injectable gels, which gel at body temperature, release beneficial ions and remain stable over time.
Marian G. Vargas Guerrero, Adrian Stiller, Alex Nygård, Matej Krivulka, Lars Galema, Erwin Peters, Jimmy Lucchesi, Peter Uppstu, Leena Hupa, Jacobus J. C. Arts   +9 more
wiley   +1 more source