Sang-ik Lee

ORCID: 0000-0001-8136-7397
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About
Contact & Profiles
Research Areas
  • Hydrology and Sediment Transport Processes
  • Greenhouse Technology and Climate Control
  • Model Reduction and Neural Networks
  • Tree Root and Stability Studies
  • Photovoltaic Systems and Sustainability
  • Dam Engineering and Safety
  • Hydraulic flow and structures
  • Flood Risk Assessment and Management
  • Machine Learning and Data Classification
  • Structural Analysis and Optimization
  • Irrigation Practices and Water Management
  • Ecology and Conservation Studies
  • Fluid Dynamics and Turbulent Flows
  • Photovoltaic System Optimization Techniques
  • Water Systems and Optimization
  • Urban and spatial planning
  • Thermal Radiation and Cooling Technologies
  • Solar Thermal and Photovoltaic Systems
  • Berry genetics and cultivation research
  • Legal and Policy Analysis in Indonesia
  • Soil Management and Crop Yield
  • solar cell performance optimization
  • Additive Manufacturing Materials and Processes
  • Gas Dynamics and Kinetic Theory
  • Heat Transfer and Optimization

Seoul National University
2020-2024

Kyungpook National University
2024

An agrivoltaic system (AVS) offers a potential strategy for meeting global demands renewable energy and sustainability by integrating photovoltaics agriculture. Many empirical studies have installed facilities cultivated actual crops, revealing that AVSs improve land use efficiency. However, it is rare end-users farmsteads to adopt owing lack of standardised models design criteria. In this study, we conducted comprehensive AVS considering agronomic aspects structural safety along with an...

10.1016/j.apenergy.2023.121130 article EN cc-by-nc-nd Applied Energy 2023-04-21

Abstract Predicting flood wave propagation from reservoir failures is critical to practical hazard assessment and risk management. Flood waves are sensitive topography, channel geometry, structures, natural features along floodplain paths. Thus, the accuracy of modelling depends on how precisely those represented. This study introduces an enhancing approach by accurately representing three-dimensional objects in floodplains using structure-from-motion (SfM). method uses unmanned aerial...

10.1007/s11069-024-06634-w article EN cc-by Natural Hazards 2024-07-13

To analyze the effect of a groove cross-sectional shape on disc filters, head loss analysis and filtration performance test were conducted using filters with different shapes (semi-elliptical- trapezoidal-shaped grooves). Furthermore, analyzed field emission scanning electron microscopy relationship between flow rate was derived from test. Even if designed same mesh standard, sectional areas grooves depending shape. Therefore, compared under condition that have area by applying area, smaller...

10.3390/w13121683 article EN Water 2021-06-17

Abstract This study attempts to evaluate the influence of design factors and flow characteristics on discharge capacity trapezoidal piano key weirs. To main rates, 9 models were simulated, with width ratios 1.25, 1.75, 2.25 sidewall angles 2, 4, −2°. As auxiliary factors, square Sq-parapet from previous research newly proposed triangular Tri-parapet integrated into high capacity. We used computational fluid dynamics simulation analyze provide optimal for Our findings reveal that certain...

10.21203/rs.3.rs-3877973/v1 preprint EN cc-by Research Square (Research Square) 2024-01-22

This paper proposes physics-informed meta-learning-based surrogate modeling (PI-MLSM), a novel approach that combines meta-learning and deep learning to train models with limited labeled data. PI-MLSM consists of two stages: task adaptation. The proposed is demonstrated outperform other methods in four numerical examples while reducing errors prediction reliability analysis, exhibiting robustness, requiring less data during optimization. Moreover, compared approaches, the exhibits better...

10.2139/ssrn.4470991 preprint EN 2023-01-01

Abstract Accurate prediction of flood waves from reservoir failures and their propagation is critical to effective hazard assessment risk management. Flood are sensitive floodplain topography, channel geometry, hydraulic structures located along flow paths in downstream areas, thus the accuracy wave modelling dependent on precision representation those features. This study introduces a novel approach by accurately representing 3D objects areas using Structure-from-Motion (SfM) technique....

10.21203/rs.3.rs-3391657/v1 preprint EN cc-by Research Square (Research Square) 2023-11-08

Since the employer"s authority over personnel is based on labor contracts, specific contents of are regulated by contracts. Therefore, transfer within scope agreement between parties or contract can be evaluated as process implementation and this may exercise possessed employer. In order to materialize worker"s duty provide contract, it reasonable determine contents, method, location works, understand with employer change them. If so, attitude precedent that concludes belongs cannot...

10.46329/llf.2022.03.35.93 article EN Labor Law Forum 2022-03-31
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