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The purpose of this paper is to reduce eddy current loss in a wire that is affected by an alternating field passing through it. This allows the efficiency of transformers to be upgraded and the quality factor in coils to be increased.

The use of a magnetoplated wire (MPW) is proposed to reduce eddy current loss in a wire. An MPW is a copper wire (COW) whose circumference is plated with a magnetic thin film. In additional, the theoretical equation for eddy current loss in an MPW is derived for ease of analysis.

The eddy current loss in an MPW is calculated as a function of the relative permeability and resistivity of its magnetic thin film to reduce the resistance due to the proximity effect of a coil. The eddy current loss in an MPW whose magnetic thin film has a relative permeability of 500 and a resistivity of 0.12 μΩm can be reduced to 4 percent that of COW at a frequency of 1 MHz.

The use of MPW can be expected to upgrade the efficiency of transformers and to increase the quality factor in coils.

Building a large trading bloc tends to produce substantial economic gains, while minimizing economic losses from overlapping FTAs. East Asia has tried to generate the impetus for promoting region-wide trading blocs, but most of those blocs have been overlapped and multilayered. This paper reviews the evolution of East Asian regionalism from the APEC FTA under the 1994 Bogor Goal to recent RCEP promoted in 2013. This paper underlines that the continued expansion of multilayered trading blocs in East Asia works as a serious obstacle to regional economic integration, rather than exploring the realization of a region-wide trading bloc.