'12 VPPC in Seoul, Korea

'12 VPPC in Seoul, Korea

'12 VPPC in Seoul, Korea

'12 VPPC in Seoul, Korea

'12 VPPC in Seoul, Korea

'11 COMPUMAG in Sydney, Australia

'11 COMPUMAG in Syney, Australia

'12 CEFC in Oita, Japan

'12 CEFC in Oita, Japan

'12 ECCE in North Carolina, USA

'12 ECCE in North Carolina, USA

'12 ECCE in North Carolina, USA

'12 ECCE in North Carolina, USA

'12 ECCE in North Carolina, USA

'10 대한전기학회 하계학술대회