In this paper, genetic algorithm-based approach for transient analysis of single transmission line connected to arrester is proposed. In this approach, the lightning channel striking the overhead line is first represented by a current source and this source is truncated by a finite set of frequency harmonies in time domain. Norton equivalent circuit viewed across arrester is then computed by me...

We present the first results from the V-FASTR experiment, a commensal search for fast transient radio bursts using the Very Long Baseline Array (VLBA). V-FASTR is unique in that the widely spaced VLBA antennas provide a discriminant against non-astronomical signals and a mechanism for the localization and identification of events that is not possible with single dish or short baseline interfero...

Purpose Vehicle fault diagnosis is a key factor in ensuring the safe and efficient operation of railway system. Due to numerous vehicle categories different mechanisms, there an unbalanced category problem. Most current methods solve this problem have complex algorithm structures, low efficiency require prior knowledge. This study aims propose new method which has simple structure does not any ...

Due to the nonlinear nature of the Bang-Bang phase-locked loops (BBPLLs), its transient analysis is very difficult. In this paper, new equations are proposed for expression of transient behavior of the second order BBPLLs to phase step input. This approach gives new insights into the transient behavior of BBPLLs. Approximating transient response to reasonable specific waveform the loop tran...

The nal upgrade of the DELPHI Silicon Tracker, to enable DELPHI to meet the physics requirements of LEP2, was completed in 1997. The tracker contains 888 detecting elements having a total active surface of about 1.6 m 2 of silicon, has 1399808 readout channels and covers polar angles between 11 and 169. It consists of: the Silicon Barrel, extending from 21 to 159 and playing the role of vertex ...

When brain activity is measured by neuroimaging, the canonical hemodynamic response (increase in oxygenated hemoglobin ([O2Hb]) and decrease deoxygenated ([HHb]) not always seen every subject. The reason for this intersubject-variability of responses still completely understood. This study performed with 32 healthy subjects, using systemic physiology augmented functional near-infrared spectrosc...