School of Computer science and Engineering, Soongsil University, 369, Sangdo-Ro, Dongjak-Gu, Seoul, 06978, Republic of Korea .
(E-mail) hsnaa@ssu.ac.kr (Tel) +82-2-828-7170 (Fax) +82-2-822-3622

* Faculty (2003.3 .- ) at School of Computer science and Engineering, Soongsil University , Seoul

* Research Associate (2002.8-2003.2.)
at Department of Computer Science , HKUST ( Hong Kong Univ. of Science & Technology) with Mordecai J. Golin
- HKUST Theoretical Computer Science Group

* Post- Doctorant (2001.3.-2002.8.)
at VEGAS team, INRIA ( Institut National de Recherche en Informatique et en Automatique )
Worked for 3D Visibility Project, with Hazel Everett , Sylvain Lazard , Sylvain Petitjean

* Ph D. and Master
at Department of Mathematics , POSTECH
Supervised by Chung- Nim Lee

* Bachelor
at Department of Mathematics , Seoul National University

* Problem Solving
* Discrete Mathematics I, II
* Linear Algebra
* Algorithm
* Automata and Theory of Computation
* Numerical Analysis Using Matlab (Graduate, 2009/1)
* Geometric Algorithms I, II (Graduate, 20111)

* Main Interest: Computational Geometry
* Others: Computer Graphics, Operation Research

* International Journal Publications: Link to DBLP.

* Domestic Journal Publications:

- GPU-based Push-Relabel Maximum Flow Computing, Journal of Knowledge Information Technology and Systems, Vol.18(5), pp 1387-1400, 2023 (with Youngsun Seo)
- GPU-based MPM Maximum Flow Computing, Journal of Knowledge Information Technology and Systems, Vol.18(2), pp 377-388, 2023 (with Youngsun Seo)
- Comparative Study on Blockchain Platforms, Journal of Knowledge Information Technology and Systems, Vol.16(2), pp 241-253, 2021 (with Mingyu Jeon, Chiyeon Hwang, and Yongjoon Kim)
- Applications of Blockchain in Business, Journal of Knowledge Information Technology and Systems, Vol.16(2), pp 297-311, 2021 (with Mingyu Jeon, Hyeong-Wook Byeon, and Hyun-Gyu Lee)
- Blockchain-Based Juridical AI Registration System, Journal of Digital Convergence, Vol.18(5), pp 17-23, 2020 (with Mingyu Jeon and Chiyeon Hwang)
- Blockchain-Based User-Participatory Game Update: Maze Escape Game Case, Journal of Korea Game Society, Vol.19(4), pp 85-96, 2019 (with Mingyu Jeon and Chiyeon Hwang)
- Automatic Multi-drone Path Planning using Network Flow Algorithms, Journal of Institute of Control, Robotics and Systems, Vol.25(4), pp 301-311, 2019 (with Youngsun Seo and Hyobin Lee)
- Plane sweep algorithm for circular arcs, Far East Journal of Mathematical Sciences(FJMS), Vol.103(10), pp 1647-1678, 2018.
- Stealthy Behavior Simulations Based on Cognitive Data, Journal of Korea Game Society, Vol.16(2), pp 27-40, 2016 (with Taeyeong Choi)
- Making Levels More Challenging with a Cooperative Strategy of Ghosts in Pac-Man, Journal of Korea Game Society, Vol.15(5), pp 89-98, 2015 (with Taeyeong Choi)
- Improving A Stealth Game Level Design Tool, Journal of Korea Game Society, Vol.15(4), pp 29-38, 2015 (written in Korean, with Sanghyeok Jeong, Juhong Jeong)
- A Settlement Selection Scheme for Map Generalization, Journal of KIISE : Software and Applications, Vol.40(12), pp 848-858, 2013 (with Nguyen Ngoc Dung)
- The Tight Upper Bound on the Offline Cop Number, Journal of KIISE : Computer Systems and with Theory, Vol.40(4), pp 193-200, 2013 (with Yu-Seok Jo)
- Distributed Event Detection Algorithm considering Tradeoff between Accuracy and Cost, Journal of KIISE: Information Networking, Vol.38(2), pp 117-126, 2011 (with Nhu Tuan Anh)
- Finding a Second-Best Coverage Path, Journal of KIISE: Computer Systems and Theory, Vol.35(8), pp 385-393, 2008 (with Junghee Kim)

* Interesting Links: Computational Geometry Pages , Geometry in Action , Mathworld