Jisang Park

ORCID: 0000-0002-8343-5434
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About
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Research Areas
  • Structural Health Monitoring Techniques
  • Control Systems and Identification
  • Stability and Control of Uncertain Systems
  • Mechanical stress and fatigue analysis
  • Thermal properties of materials
  • Engineering Applied Research
  • Wind Energy Research and Development
  • Advanced Thermoelectric Materials and Devices
  • Topic Modeling
  • Mechanical Behavior of Composites
  • Fatigue and fracture mechanics
  • Surface and Thin Film Phenomena
  • Natural Language Processing Techniques
  • Probabilistic and Robust Engineering Design
  • Electromagnetic wave absorption materials
  • Structural Load-Bearing Analysis
  • Thermography and Photoacoustic Techniques
  • Fault Detection and Control Systems
  • Engineering Structural Analysis Methods
  • Additive Manufacturing and 3D Printing Technologies
  • Advanced Control Systems Optimization
  • Electromagnetic Launch and Propulsion Technology
  • Mental Health via Writing
  • Model Reduction and Neural Networks
  • Mechanical and Thermal Properties Analysis

Korea Advanced Institute of Science and Technology
2024

Korea Institute of Materials Science
2012-2023

Seoul National University
2022

Korea University
2006-2007

University of California, San Diego
2004-2007

Korea Institute of Science and Technology
2002

Abstract In recent years, the integration of large language models (LLMs) has revolutionized field robotics, enabling robots to communicate, understand, and reason with human-like proficiency. This paper explores multifaceted impact LLMs on addressing key challenges opportunities for leveraging these across various domains. By categorizing analyzing LLM applications within core robotics elements—communication, perception, planning, control—we aim provide actionable insights researchers...

10.1007/s11370-024-00550-5 article EN cc-by Intelligent Service Robotics 2024-08-13

In this and the following companion articles, authors present 2ω method, a novel ac mode local thermal property imaging technique with nanoscale spatial resolution. To demonstrate use of thermoelectric probe as an active one that can function both heater temperature sensor, develop implement signal measurement technique, which extract signals from thermocouple junction while electrically heating it simultaneously. The principle is explained by steady periodic electrothermal analysis....

10.1116/1.2353842 article EN Journal of Vacuum Science & Technology B Microelectronics and Nanometer Structures Processing Measurement and Phenomena 2006-09-01

The purpose of this study is to prepare a resistive lossy material using conducting polymers for electromagnetic wave absorbers. This paper presents conductive paste largely composed poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) with polyurethane binder. various secondary compounds are added in small amounts an aqueous blended solution order enhance the electrical and mechanical properties thin film. synthesized characterized through electrical, chemical, morphological analyses....

10.3390/polym14030393 article EN Polymers 2022-01-19

Abstract Fatigue testing of a 48.3 m wind turbine blade needs to utilize the blade's oscillation range 8.4 along flapwise direction for one million cycles. Control such remarkable makes fatigue difficult and requires large supply energy. This study minimized actuating force required using an on‐board‐type resonance exciter with constant amplitude. Constraints related exciter's stroke capacity maximum error between target loads test were also considered. Based on new algorithm suggested in...

10.1002/we.1837 article EN Wind Energy 2015-03-09

This paper presents the 2ω method, a newly developed ac mode local thermal property imaging technique with nanoscale spatial resolution. The authors batch-fabricate thermoelectric probe, whose junction size is about 200nm, yield higher than 95%. shortest time constant of probe measured to be 0.72ms. They experimentally demonstrate that method can map out sample by monitoring amplitude signal from thermocouple heated an ac. By comparing images obtained other methods, they also show using...

10.1116/1.2353843 article EN Journal of Vacuum Science & Technology B Microelectronics and Nanometer Structures Processing Measurement and Phenomena 2006-09-01

This study proposes a rational optimum design procedure for broadband radar absorbers composed of square-loop-shaped resistive frequency selective surface (FSS) that are placed on an E-glass fabric/epoxy laminate and grounded by Cu foil covering the X-band (8–12 GHz). A absorbing performance was presented based analytical numerical illustration. The effects resistance FSS dielectric substrate process absorber examined. fabricated using screen-printing technology with carbon-type ink as...

10.1109/temc.2022.3219378 article EN IEEE Transactions on Electromagnetic Compatibility 2022-11-17

The existing colonoscope requires a dexterous skill of surgeon to perform the insertion in entire colon. procedure is painful patient. Therefore, biomedical and robotic researchers are developing locomotive that can travel safely colon In this paper, we describe new design concept semi-autonomous micro robot for colonoscopy. comprises actuation system, bow-shaped flexible supporters keep space between wall actuator camera LED diagnosis steering system pass through acute angle We suggest two...

10.1109/iros.2001.976318 article EN 2002-11-13

To commercialize a wind turbine, the turbine blade must pass fatigue test for certification during development process. The method used at this time is to excite using resonance phenomenon and control mode shape be imposed on each section by additional masses direct attachment method. Due length mass of offshore blades are increased more energy collection, amount required also increased. However, can create large mean flap moment owing gravity blade, which causes unrealistic failure blade....

10.1016/j.oceaneng.2023.114802 article EN cc-by Ocean Engineering 2023-05-28

ABSTRACT Damping ratios during resonance‐type fatigue testing of a 44 m wind turbine blade were found with respect to six different test setups. Based on suggested parameter, lines damping at setups linearized into single line. Using the line, other plausible can be predicted. Copyright © 2013 John Wiley & Sons, Ltd.

10.1002/we.1623 article EN Wind Energy 2013-04-26

10.1016/j.automatica.2007.04.021 article EN Automatica 2007-08-22

In experimentally assessing the stability and performance level of a large collection controllers in feedback with single unknown actual plant, we develop method searching for subset to manage number experimental assessments. Avoiding testing every prospective controller, check whether controller set will work satisfactorily when they are connected an but plant by experimenting only small candidate controllers. doing this, ν-gap metric be main tool.

10.1109/cdc.2005.1583195 article EN 2006-10-04

An ac type thermopower measurement technique was suggested and demonstrated with a simple experimental setup. The distribution across silicon p-n junction measured point by at every 10nm, so that it free from the noise due to built-in potential photoionization effects, compared theoretical result. Although this could not follow sharp variation of near junction, identify smooth peak in depletion layer junction.

10.1063/1.2432949 article EN Applied Physics Letters 2007-01-22

In recent years, the integration of large language models (LLMs) has revolutionized field robotics, enabling robots to communicate, understand, and reason with human-like proficiency. This paper explores multifaceted impact LLMs on addressing key challenges opportunities for leveraging these across various domains. By categorizing analyzing LLM applications within core robotics elements -- communication, perception, planning, control we aim provide actionable insights researchers seeking...

10.48550/arxiv.2404.09228 preprint EN arXiv (Cornell University) 2024-04-14

Learners of a second language (L2) often unconsciously substitute unfamiliar L2 phonemes with similar from their native (L1), even though speakers the perceive these sounds as distinct and non-interchangeable. This phonemic substitution leads to deviations standard phonological patterns L2, creating challenges for learners in acquiring accurate pronunciation. To address this, we propose Inter-linguistic Phonetic Composition (IPC), novel computational method designed minimize incorrect...

10.48550/arxiv.2411.10927 preprint EN arXiv (Cornell University) 2024-11-16

CNG 차량에서 실사용 중 Type3 복합재료 압력용기의 외부 복합재 층에 결함이 발생된다면, 용기의 구조적 성능 즉, 원래의 설계수명보다 반복수명이 감소되는 현상을 초래할 수 있다. 이에 따라, 본 연구에서는 결함을 고려한 유한요소 모델링과 해석 기법을 제시하였다. 유한요소해석은 자긴처리 공정에서 알루미늄 라이너의 소성 변형으로 인해 경로 의존적 보이므로, 발생되는 실제 환경을 해석에서 결함은 자긴압력 이후에 도입되어야한다. 이러한 상황의 사실적인 시뮬레이션을 위해, 해석의 중간단계에서 도입되는 기법이 제시되었으며, 해석결과는 시작단계에서부터 모델에 초기결함을 내포하는 일반적 유한요소해석과 비교되었다. 제안된 기업은 복합재층 손상에 따른 영향성 평가 및 중에서의 검사 기준을 마련하는데 효과적으로 사용될 cylinder is a composite pressure vessel fully over-wrapped with carbon/epoxy layers over an...

10.7234/kscm.2010.23.6.007 article EN Journal of The Korean Society for Composite Materials 2010-12-31

As conversational agents become more human-like, people expect them to be engaging as well. However, developing that comprehend human desires and generate appropriate responses, continues a challenge. We, therefore, conducted an interdisciplinary study collected 2,300 open-domain dialogs with self-labeled psychological variables such empathy, connectedness, respect, friendliness. We found participants who talk coherently disclose self-relevant information in the first encounter were regarded...

10.31234/osf.io/9qptj preprint EN 2022-04-18

We consider methods for the computation of; maximal MIMO stability margins b <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">pc</sub> , minimal V-gap metrics zeta xmlns:xlink="http://www.w3.org/1999/xlink">v</sub> and difference between these two values, through use of scaling weighting functions. propose simultaneous selections that maximize generalized margin minimize V-gap. The minimization by involves a non-convex optimization. modify...

10.1109/cdc.2007.4434796 article EN 2007-01-01

To commercialize a wind turbine, the turbine blade must pass fatigue test for certification during development process. The method used at this time is to excite using resonance phenomenon and control mode shape be imposed on each section by additional masses direct attachment method. Due length mass of offshore blades are increased more energy collection, amount required also increased. However, can create large mean flap moment owing gravity blade, which causes unrealistic failure blade....

10.2139/ssrn.4349099 article EN 2023-01-01
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