Jong-Kap Lee
KAIST
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Featured researches published by Jong-Kap Lee.
Applied Physics Letters | 2001
Dae Won Moon; Yong Ho Ha; Yun Chang Park; Jong-Kap Lee; Jungmo Kim; Sung-Chul Shin
The interface structure of an ultrathin Co overlayer on a Pt(111) crystal was investigated with atomic-layer resolution medium-energy ion scattering spectroscopy and surface magneto-optical Kerr effect (SMOKE). For a 7 ML Co, interdiffusion begins at 673 K to form a heavily distorted Co–Pt surface alloy layer with little change in SMOKE intensity. However, annealing at 773 K formed a 30 atomic-layer-thick Co–Pt substitutional alloy with 3.7% maximum tensile strain, at which the SMOKE intensity increased more than 200%. The enhancement of the Kerr intensity is discussed with the interface alloy formation.
Journal of Ocean Engineering and Technology | 2012
Sung-Chul Shin; Jeong-hoon Bae; Hyun-Soo Kim; Seong-Hoon Kim; Soo-Young Kim; Jong-Kap Lee
The accident risks in the marine environment are increasing because of the tendency to build faster and larger ships. To secure ship safety, risk-based ship design (RBSD) was recently suggested based on a formal safety assessment (FSA). In the process of RBSD, a ship designer decides which risk reduction option is most cost-effective in the design stage using a cost-benefit analysis (CBA). There are three dimensions of risk in this CBA: fatality, environment, and asset. In this paper, we present an approach to estimate the environmental costs based on the size of an oil tanker involved in an accident using a neural network. An appropriate neural network model is suggested for the estimation,and the neural network is trained using IOPCF data. Finally,the learned neural network is compared with the cost regression equation by IMO MEPC 62/WP.13 (2011).
Journal of Marine Science and Technology | 2012
Sung-Chul Shin; Soon-Sup Lee; Jong-Kap Lee; Kyung-Ho Lee
This paper introduces a design of planning level ship product model (called SPPM hereinafter) based on ISO 10303 Standard for The Exchange of Product Model data (STEP). For the design of this model, the information modeling methodologies such as Integration Definition (IDEF) methods and Unified Modeling Language (UML) were reviewed, and a hybrid method was established. By using this method, ship initial design process was analyzed, and STEP-based information model and class libraries for SPPM were defined. For the data structure of this model, the shipbuilding Application Protocols (AP215, AP216 and Ship Common Model) of STEP were investigated and utilized to facilitate sharing of product model data with other CAD systems of subsequent stages. For the implementation and the verification of the model, a prototype system was developed using the ACIS geometric modeling kernel and object-oriented database management system.
Journal of The Society of Naval Architects of Korea | 2009
Soon-Sup Lee; Jong-Kap Lee
WIG crafts are a high speed vessel with features of dynamic supported craft. These crafts, which are predominantly of light weight and operate any substantially greater speeds than conventional craft such as bulk carrier, tanker, container ship, etc., could not be accommodated under traditional maritime safety instruments. It means that there is the need for risk and safety levels to be assessed on a holistic basis, recognizing that high levels of operator training, comprehensive and thoroughly implemented procedures, high levels of automation and sophisticated software can all make significant contributions to risk reduction. To response this requirement, the Interim Guideline for WIG craft(MSC/Circ.1054) were developed in the view of the configuration of WIG craft, which fall between the maritime and aviation regulatory regimes. This paper reviews a safety assessment process and methodology to be used in the design phase of a new ship. The process and methodology is based on the risk-based approach and is applied to safety assessment in concept development phase of small WIG craft in the 20-person class.
Practical Design of Ships and Other Floating Structures. Proceedings of the Eighth International Symposium on Practical Design of Ships and Other Floating StrucutresPRADS (Practical Design in Shipbuilding) Chinese Academy of Engineering, Chinese Society of Naval Architects and Marine Engineers, Chinese Institute of Navigation | 2001
Soon-Sup Lee; Jong-Kap Lee; Hongtae Kim
Publisher Summary This chapter introduces model-based simulation system, which is able to assess ship stability during container loading/unloading using ENVISION, the general-purpose simulation system. The state-of-the-arts for simulation based design (SBD) technologies and related research, and developed container loading/unloading simulation system for high-speed medium size container ship using SBD technologies are investigated. The shape of hull form, compartment, cargo, and facilities is defined using the 3D commercial geometric modeling system. The application programs for stability assessment of ship are in-house programs. The Graphical User Interface for the visualization and control of input/output data is adopted for the efficient use of developed system. Simulation system for the visualization of stability and behavior of ship, the visualization of loading/unloading procedures, and the assessment of cranes optimal position using in-house computer aided engineering (CAE) programs, Graphical User Interface, geometric model, and simulation function is developed. SBD technologies can be applied usefully to engineering parts such as virtual shipyard, marine accident simulation, marine safety, and marine ergonomics.
Ocean Engineering | 2006
Soon-Sup Lee; Jong-Kap Lee; Beom-Jin Park; Dongkon Lee; Soo-Young Kim; Kyung-Ho Lee
Ocean Engineering | 2013
Hee Jin Kang; YoungSoon Yang; Jin Choi; Jong-Kap Lee; Dongkon Lee
The Fifteenth International Offshore and Polar Engineering Conference | 2005
Jong-Kap Lee; Beom-Jin Park; Soon-Sub Lee; Dongkon Lee
Archive | 2011
Hee-Jin Kang; Jin Choi; Jong-Kap Lee
Journal of Ocean Engineering and Technology | 2010
Soon-Sup Lee; Beom-Jin Park; Jong-Kap Lee