Kazuki Koga / 古賀一基

Department of Mathematical and Computing Science,
Tokyo Institute of Technology
Researcher

Doctor of Informatics
Email: koga.k.ac at m.titech.ac.jp

My research interests include: Numerical solutions of partial differential equations, Fluid mechanics, Fee boundary problems, Boundary integral equations, Adaptive mesh refinement, Numerical quadrature rules, Numerical optimization, Signal processing, Computational harmonic analysis, High performance computing

Employment:

Department of Mathematical and Computing Science, Tokyo Institute of Technology
- Researcher, Apr 2023 - present (Host: Prof. Zin Arai)

Department of Mathematics, Kyoto University
- Program-Specific Assistant Professor, Apr 2021 - Mar 2023
- Program-Specific Researcher, Dec 2020 - Mar 2021 (Host: Prof. Takashi Sakajo)
- Research Assistant Staff , Apr 2020 - Nov 2020 (Host: Prof. Takashi Sakajo)

Education:

Doctor of Informatics, Kyoto University 2020 (Advisor: Prof. Toshio Aoyagi)
Master of Informatics, Kyoto University 2016
Bachelor of Economics, Kyoto University 2013

Visiting Appointments:

Department of Mathematics at UC Berkeley, Jul 2018 - Dec 2018 (Host: Prof. Jon Wilkening)
ICERM at Brown University, Feb 2017 - Apr 2017 (Mentor: Prof. Jon Wilkening)

Publications:

Journal Articles
1. K. Koga and J. Wilkening, A new spatio-temporal discretization of axisymmetric vortex sheets with surface tension, in preparation.
2. K. Koga, Computing weak distance between the 2-sphere and its nonsmooth approximations, SIAM J. Sci. Comput., 46(1), A360-A375 (2024) [DOI, arxiv]
3. K. Koga, Numerical reparametrization of periodic planar curves via curvature interpolation, SIAM J. Sci. Comput., 44(3), A1703-A1722 (2022) [DOI, arxiv]
4. T. Uda, T. Sakajo, M. Inatsu and K. Koga, Identification of atmospheric blocking with morphological type by topological flow data analysis, J. Meteo. Soc. Japan vol., 99, 1169−1183 (2021) [DOI]
5. K. Koga, Signal processing approach to mesh refinement in simulations of axisymmetric droplet dynamics, J. Comput. Appl. Math., 383, 113131 (2021) [DOI, arxiv]

Conference Proceedings
1. K. Koga and M. Funakoshi, Recent Progress in Simulations of 3D Vortex Sheets with Surface Tension, In Mathematical Insights into Advanced Computer Graphics Techniques, pp.119-129, Springer Singapore, 2019.