where λ, μ1, μ2, . . . , μk, y0 ∈ C, has been studied by numerous authors e.g., 1–8 . Secondorder versions of this equation have also been studied e.g., 9, 10 . The enduring interest in this equation is due partially to the number of applications it has found such as a current collection system for an electric locomotive, cell growth models, biology, economy, control, and electrodynamics e.g., ...

Based on statistical data in Indonesia train collisions occur each year. The solution to prevent these accidents is to create early warning detection devices for locomotive driver before the collision or accident occurred so that locomotive drivers can avoid them (preventive). The method used is by using infrared system which is placed in front of the locomotive, so when there are objects detec...

In the Laboratory of Traction and Rolling Stock systematic research into the methods of testing a traction drive, using the real models has been conducted. The aim of this research was to completely define all elements of the system for testing the main electrical and mechanical properties which include the selection of measuring transducers, the selection and implementation of the system for c...

This paper put forward a finite element method to study the radio transmission in tunnel electromagnetic environment. The author makes use of software simulation to study the rectangular tunnel model. When varying the electric parameters of tunnel wall, ceiling and floor, this may somewhat influence the propagation characteristics of electromagnetic wave.In order to study the interference prope...

An improved method for spectral analysis of traction current an Alternating Current (AC) electric locomotive is considered in the article. A new considers change voltage catenary system as a non-deterministic, non-ergodic and non-Gaussian process. It has been established that higher harmonics have significant negative effect on operation non-traction railway consumers electricity. In addition, ...

The condition of locomotive bearings, which are essential components in trains, is crucial to train safety. The Doppler effect significantly distorts acoustic signals during high movement speeds, substantially increasing the difficulty of monitoring locomotive bearings online. In this study, a new Doppler transient model based on the acoustic theory and the Laplace wavelet is presented for the ...

The Japanese Orthopaedic Association has proposed the term "locomotive syndrome" to designate a condition that places a person at high risk for long-term care. However, in daily clinical practice, even when a diagnosis of locomotive syndrome is made, exercise therapy often cannot be successfully performed in some patients owing to their lack of motivation. We speculated that locomotive syndrome...