About KATO KAZUHIRO
About JR東日本
About YAJIMA SATOSHI
About JR東日本
About TAKIZAWA HIDEAKI
About JR東日本 長野電力技セ
About 鉄道と電気技術
About railway facility
About electric installation
About renewal
About safety countermeasure
About operation(processing)
About recovery and reclamation
About system update
About operational error
About restoration of accident
About accident avoidance countermeasure
About railway facility
About 電力指令システム
About electric power facility
About Interior power distribution,power source equipment
About JR東日本
About 長野
About 指令
About SCADA
About システム更新