Research Interests

Emergent phenomena in complex systems

Dynamics in complex networks

Ecological systems

Synchronization

Research Experiences

Inha University

Postdoctoral researcher
  • Host: Prof. Hye Jin Park
  • NRF postdoctoral fellow (Sep. 2026 - Aug. 2027)
  • Random Lotka–Volterra dynamics on complex networks: how degree-correlated interaction strengths reshape biodiversity and network assortativity (PRE, under review)
  • Eco-evolutionary model of migratory timing under seasonal resources and competition
Mar. 2025 - present

Education

SungKyunKwan University

Ph.D. in Physics
  • Thesis: Clap, Sing, and Sleep: A Study of Emergent States in the Kuramoto Model
  • Supervisor: Prof. Beom Jun Kim
Mar. 2019 - Feb. 2025

SungKyunKwan University

B.S. in Physics
Mar. 2013 - Jul. 2017

Publications

Published

  • [4] Younghwa Cha, Yeji Lee, Eunhee Ji, SoHyun Han, Sunhyun Min, Hyoungkyu Kim, Minseo Cho, Hae Seong Lee, Youngjai Park, and Joon-Young Moon, "Sustained Attention Task (gradCPT) Dataset Using Simultaneous EEG-fMRI and DTI", Sci. Dat. (2026).
  • [3] Jae Hyung Woo, Hae Seong Lee, Tae-Wook Ko and Joon-Young Moon, "Hysteresis in a Generalized Kuramoto Model with a First-order Approximate Coupling Function and Inhomogeneous Coupling Strengths", Chaos, Solitons and Fractals 190, 115770 (2025)
  • [2] Hae Seong Lee, Beom Jun Kim, and Hye Jin Park, "Stability of Twisted States in Power-law-coupled Kuramoto Oscillators on a Circle with and without Time Delay", Phys. Rev. E 109, 064203 (2024).
  • [1] Hae Seong Lee, Jong Il Park, and Beom Jun Kim, "Modified Kuramoto Model with Inverse-square Law Coupling and Spatial Time Delay", Physica A 582, 126263 (2021).

Preprints

  • (in revision) Hae Seong Lee, Deok-Sun Lee, Sang Hoon Lee, Samir Suweis, and Hye Jin Park , "Ecological Networks of Viable Species with Degree-dependent Interaction", arXiv:2607.18809.

In preparation

  • Hae Seong Lee and Beom Jun Kim, "The Effect of Prior Knowledge on Vocabulary Learning"
  • Hae Seong Lee, Hyeong-Chai Jeong, Kalle Parvinen, Ulf Dieckmann, and Hye Jin Park, "Migration Patterns of Migratory Birds Driven by Seasonal Resource Variation and Competition"

Grants & Fellowships

Postdoctoral Research Fellowship

National Research Foundation of Korea (NRF)
  • Principal Investigator. Project: Power Grid Synchronization Stability under Renewable Energy Expansion: An Approach Based on the Diversity‑Stability Paradox
Sep. 2026 - Aug. 2027

Honors & Awards

  • SKKU scholarship innovation, Sungkyunkwan University (Sep. 2022)
  • SKKU innovative research fellowship, Sungkyunkwan University (Mar. 2022)
  • Excellence project award, 19th KIAS-APCTP Winter School on Statistical Physics (Jan. 2022)
  • Outstanding oral presentation award, 2021 Korean Physical Society Spring Meeting (Apr. 2021)
  • Graduate Merit Scholarship, Sungkyunkwan University (Mar. 2019 - Feb. 2022)

Skills

Languages

Korean, English

Programming languages

C, C++, Python, SQL(MySQL), Matlab, javascript

Computer Skills

Monte-carlo simulation, CUDA programming, Agent-based simulation, MPI programming, Networkx, Latex, Web design

Services

Organizer of the joint journal club of statistical physicists

  • Organizer of the joint journal club of statistical physicists in Sungkyunkwan University, Hanyang University, Catholic University of Korea, and Inha University
Aug. 2024 - Jan. 2025

Experiences

Research Experiences

  • Research contract with Korea Institute of Science and Technology — Nov. 2020 - Dec. 2020

Teaching Assistant

  • Thermal and Statistical Mechanics II — Spring 2020, Spring 2021
  • Thermal and Statistical Mechanics I — Fall 2020, Fall 2021
  • Analytical Mechanics II Exercise — Fall 2019
  • Analytical Mechanics II — Fall 2019
  • Analytical Mechanics I — Spring 2019

Attended Schools

International Schools

  • Unifying Mathematical Models of Biodiversity (Tarascon-sur-Ariege, France, Jul. 2026)
  • XII GEFENOL Summer School on Statistical Physics of Complex Systems (Madrid, Spain, Jul. 2024)
  • Complexity72h (Madrid, Spain, Jun. 2024)
  • Complex Networks: Theory, Methods, and Applications (Como, Italy, May. 2024)
  • CSH winter school 2023 (Obergurgl, Austria, Jan. 2023)
  • VII Mediterranean school on complex networks (Catania, Italy, Jun. 2022)

Domestic Schools

  • 22nd KIAS-APCTP Winter School on Statistical Physics (Jan. 2025)
  • 21st KIAS-APCTP Winter School on Statistical Physics (Jan. 2024)
  • Complex systems summer school (Jul. 2023)
  • 20th KIAS-APCTP Winter School on Statistical Physics (Jan. 2023)
  • 19th KIAS-APCTP Winter School on Statistical Physics (Jan. 2022)
  • 18th KIAS-APCTP Winter School on Statistical Physics (Jan. 2021)
  • 17th KIAS-APCTP Winter School on Statistical Physics (Jan. 2020)
  • 16th KIAS-APCTP Winter School on Statistical Physics (Jan. 2019)

Personal Projects

SKKU wiki

Suspended
  • A mediawiki-based wikipedia about Sungkyunkwan University. It was dedicated to share informations about courses, clubs, restaurants and departments in SKKU.
Jan. 2016 - Apr. 2024

Presentations

International Oral Presentations

  • [9] "Migration Patterns of Migratory Birds Driven by Seasonal Resource Variation and Competition", RHINO 2026 (Yokohama, Japan, Aug. 30, 2026)
  • [8] "Species Survival Probability Under Degree-interaction Strength Correlation", Arctic Meeting for Adaptive Mechanisms in Biological Systems (Abisko, Sweden, Jan. 20, 2026)
  • [7] "Bird Migration Patterns Arising from Seasonal Resource Availability and Competition", Conference on Complex Systems 2025 (Siena, Italy, Sep. 1, 2025)
  • [6] "Hysteresis in Coupled Identical Oscillators with Generalized Coupling Function and Coupling Strength Inhomogeneity", Complex Networks 2023 (Menton, France, Nov. 28, 2023)
  • [5] "Stability of Twisted States in Kuramoto Oscillators on a Circle with Power-Law Interaction Strength", Roles of heterogeneity in non-equilibrium collective dynamics (RHINO 2022) (Tokyo, Japan, Sep. 18, 2022)
  • [4] "Twisted States in Kuramoto Oscillators on a Circle with Distance-decaying Coupling Strength", 15th Asia Pacific Physics Conference (Online, Aug. 22, 2022)
  • [3] "Synchronization of Oscillators with Power-Law Coupling and Spatial Time Delay", 2022 Korea-Canada Symposium and International Workshop on Multiplex Brain Networks (Calgary & Banff, Canada, Apr. 21, 2022)
  • [2] "The Central Word Set in a Language", Networks 2021 (Online, Jul. 5, 2021)
  • [1] “Modified Kuramoto Model with Power Law Coupling and Spatial Time Delay", Conference on Complex Systems 2019 (NTU, Singapore, Sep. 30, 2019)

Domestic Oral Presentations

  • [9] "Degree-correlated Interactions Drive Assortativity in Ecological Networks through Hub-Favored and Hub-Suppressed Phases", 2026 Korean Physical Society Spring Meeting (Daejeon, South Korea, Apr. 23, 2026)
  • [8] "Evolution of Risk-taking Strategy in von Neumann Poker game", Workshop on the game theory and its applications (Gwangmyeong, South Korea, Nov. 24, 2023)
  • [7] "Stability of Twisted States in Kuramoto Oscillators on a Circle with Distance-Decaying and Time-Delayed Coupling", 2023 Korean Physical Society Spring Meeting (Daejeon, South Korea, Apr. 20, 2023)
  • [6] "The Compartment Learning Model and the Core Vocabulary in Korean Language", 2021 Korean Physical Society Spring Meeting (Online, Apr. 22, 2021)
  • [5] “A Set of Central Words in Korean Language”, 2020 Korea Academy of Complexity Studies Fall Conference (Online, Nov. 28, 2020)
  • [4] “A Set of Central Words in Korean Language”, Joint mini-workshop on collective dynamics (Busan, South Korea, Nov. 12, 2020)
  • [3] “A Set of Central Words in Korean Language”, 2020 Korean Physical Society Fall Meeting (Online, Nov. 5, 2020)
  • [2] “Modified Kuramoto Model with Power Law Coupling and Site-dependent Time Delay”, 2019 Korean Physical Society Fall Meeting (Gwangju, South Korea, Oct. 24, 2019).
  • [1] “Modified Kuramoto Model with Power Law Coupling and Spatial Time Delay”, The 20th Workshop for Statistical Physics (Byeonsan, South Korea, Aug. 21, 2019)

International Poster Presentations

  • [6] "How Degree-Dependent Interactions Reshape Hub Survival in Ecological Networks", Netsci 2026 (Boston, USA, Jun. 3, 2026)
  • [5] "Generalized Random Lotka-Volterra Model with Degree-correlated Interaction Strengths", Statphys29 (Florence, Italy, Jul. 14, 2025)
  • [4] "How Do Degree-correlated Interaction Strengths Shape Biodiversity?", JSMB-ACMB 2025, (Kyoto, Japan, Jul. 8, 2025)
  • [3] "Why We Sing in a Round at a Stadium: stability analysis of twisted states in Kuramoto oscillators on a circle", Netsci 2024 (Quebec, Canada, Jul. 19, 2024)
  • [2] "Finding Core Vocabulary in a Language", Statphys28, (Tokyo, Japan, Aug. 8, 2023)
  • [1] “Effect of Prior Knowledge on Vocabulary Learning”, Conference on complex systems 2022 (Palma, Spain, Oct. 18, 2022)

Domestic Poster Presentations

  • [5] “Impact of Degree-correlated Interactions on Biodiversity”, 2025 Korean Physical Society Spring Meeting (Daejeon, South Korea, Apr. 23, 2025)
  • [4] “Biodiversity in Random Lotka‑Volterra Model with Degree‑correlated Interaction Strength”, Stochastic Processes as Tools for Understanding Biological Systems (Busan, South Korea, Feb. 17, 2025)
  • [3] “Locally Twisted States of Kuramoto Oscillators in a Brain Network with Site-dependent Time Delay”, 2024 Korean Physical Society Fall Meeting (Yeosu, South Korea, Oct. 25, 2024).
  • [2] “Finding Important Words: Network Analysis of a Korean Dictionary”, 2024 Korean Physical Society Spring Meeting (Daejeon, South Korea, Apr. 25, 2024).
  • [1] “Emergence of Twisted States in Kuramoto Oscillators on a Circle with Power-law Coupling Strength”, 2022 SKKU Physics Workshop (Suwon, South Korea, Nov. 30, 2022)