March 1994 Ph.D., Tokyo Institute of Technology/The University of Tokyo, (1991-1994). March 1991 M. Sc., Tokyo Institute of Technology, (1989-1998). March 1989 B.S., Tokyo Institute of Technology, (1984-1988). 2002 –2012 Associate Professor, Chiba University, Japan. 1997–2000 Visiting Scholar, University of Utah. 1997 Monbu-Sho Fellow, University of Tokyo, Japan. 1995–2002 Assistant Professor, Institute for Cosmic Ray Research, University of Tokyo. Award： 1999 Distinguished Young Researchers Award Inamori Foundation。 1997 Fellowship for Distinguished Researchers The Ministry of Education and Culture。 1991 Scholar of Excellence Tejima Foundation。 Publications： “Measurement of Atmospheric Neutrino Oscillations with IceCube” by IceCube Collaboration (M. G. Aartsen et al), Phys.Rev.Letters 111, 081801 (2013). “Correlations of the Arrival Directions of Ultra-high Energy Cosmic Rays with Extragalactic Objects as Observed by the Telescope Array Experiment” by Telescope Array Collaboration (T. Abu-Zayyad et al), Astrophys.J. 777, 88 (2013). 5. “The Energy Spectrum of Ultra-High-Energy Cosmic Rays Measured by the Telescope Array FADC Fluorescence Detectors in Monocular Mode” by Telescope Array Collaboration (T. Abu-Zayyad et al), Astropart.Phys. 48, 16-24 (2013). “Measurement of South Pole ice transparency with the IceCube LED calibration system” by IceCube Collaboration (M. G. Aartsen et al), Nucl. Instrum. Mth. A711 73-89 (2013). “Measurement of the Atmospheric νe flux in IceCube”, by IceCube Collaboration (M. G. Aartsen et al), Phys. Rev. Letters 110 151105 (2013). “Search for dark matter annihilations in the Sun with the 79-string IceCube detector”, by IceCube Collaboration (M. G. Aartsen et al), Phys. Rev. Letters 110 131302 (2013). “Search for Galactic PeV Gamma Rays with the IceCube Neutrino Observatory”, by IceCube Collaboration (M. G. Aartsen et al), Phys. Rev. D 87 062002 (2013).