Near Earth Object skylight quilt pattern Patrol Team (National Research Lab.) at KAO and YSTAR team at Yonsei University Observatory jointly developed a dome enclosure to be installed abroad together with a survey telescope.It has a fully-open clam shell type design to maximize the fast slew capability of the telescope and is also sturdy enough to
The reformations of the electrical power sector have resulted in very dynamic and competitive market that has changed many elements of the power industry.Excessive demand of energy, depleting the fossil fuel reserves of planet and releasing the toxic air pollutant, has been causing harm to earth habitats.In this new situation, insufficiency of ener
The DC magnetic bias phenomenon in transformers can result in increased noise and harmonic marvos t coils components.This study focuses on the DC magnetic bias generated by stray currents in the DC traction power supply system of neutral grounding transformers under multiple train operation conditions.A two-layer soil model is utilized to calculate