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SinIchi Hamazaki
Department of Electronic Engineering, Iwaki Meisei University, 5–5–1 Iino, Chuohdai, Iwaki–shi, Fukushima 970–8551
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Naoko Tashiro
Department of Electronic Engineering, Iwaki Meisei University, 5–5–1 Iino, Chuohdai, Iwaki–shi, Fukushima 970–8551
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Fuminao Shimizu
Department of Electronic Engineering, Iwaki Meisei University, 5–5–1 Iino, Chuohdai, Iwaki–shi, Fukushima 970–8551
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Masaaki Takashige
Department of Electronic Engineering, Iwaki Meisei University, 5–5–1 Iino, Chuohdai, Iwaki–shi, Fukushima 970–8551