Linear complexity iterative and log-linear complexity direct solvers are developed for the volume integral equation (VIE) based general large-scale electrodynamic analysis. The dense VIE system matrix is first represented by a new clusterbased multilevel low-rank representation. In this representation, all the admissible blocks associated with a single cluster are grouped together and represent...

Field Emitter Arrays (FEAs) are being developed for electron emission in electrodynamic tether applications. Instead of a single hot (i.e. high powered) emitter or a gas dependant plasma contactor, FEA systems consist of many (up to millions per square centimeter) of small (micron-level) cathode/gate pairs on a semiconductor wafer that effect cold emission at a relatively low voltage. Each indi...

This paper introduces in brief the traction system of a permanent magnet electrodynamic suspension (EDS) train. The synchronous traction mode based on long stators and track cable is described. A speed and position detection system is recommended. It is installed on board and is used as the feedback end. Restricted by the maglev train's structure, the permanent magnet electrodynamic suspension ...

T theory, research and practice of naturalistic hypnosis and happiness is explored with the current STEM perspectives of science, technology engineering, and mathematics. The quantum electrodynamic field theory of naturalistic hypnosis was presented at the first meeting of The American Society of Clinical Hypnosis (ASCH)that coincided with the founding of The American Journal of Clinical Hypnos...

Abstract. The operational advantages of electrodynamic tethers of moderate length are becoming evident from studies of collision avoidance. Although long tethers (of order of 10 kilometers) provide high efficiency and good adaptability to varying plasma conditions, boosting tethers of moderate length (~ 1 kilometer) and suitable design might still operate at acceptable efficiencies and adequate...