Graduate School of Science, Nagoya University. Referees: Dr. Kiyotomo Ichiki (Supervisor), Dr. Junji Hisano (Chief Examiner), Dr. Shuichiro Inutsuka (Examiner), Dr. Yoichi Tamura (Examiner), Dr. Tsutomu Takeuchi (Examnier)
Division of Particle and Astrophysical Science, Graduate School of Science, Nagoya University. Supervisor: Dr. Kiyotomo Ichiki
