Jeonghwa Lee

ORCID: 0000-0003-2369-7683
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About
Contact & Profiles
Research Areas
  • Education and Learning Interventions
  • Educational Systems and Policies
  • Education, Safety, and Science Studies
  • Psychosocial Factors Impacting Youth
  • Structural Load-Bearing Analysis
  • Structural Behavior of Reinforced Concrete
  • Structural Engineering and Vibration Analysis
  • Healthcare Education and Workforce Issues
  • Structural Health Monitoring Techniques
  • Intergenerational Family Dynamics and Caregiving
  • Korean Urban and Social Studies
  • Educational Research and Pedagogy
  • Railway Engineering and Dynamics
  • Language, Metaphor, and Cognition
  • Seismic Performance and Analysis
  • Categorization, perception, and language
  • Health and Wellbeing Research
  • Diverse Approaches in Healthcare and Education Studies
  • Diverse Topics in Contemporary Research
  • Early Childhood Education and Development
  • Structural Analysis and Optimization
  • Engineering Structural Analysis Methods
  • Second Language Acquisition and Learning
  • Subtitles and Audiovisual Media
  • Grit, Self-Efficacy, and Motivation

Jeonbuk National University
2025

Korea University
2013-2024

Labor Welfare Corporation
2024

Kongju National University
2014-2024

Chonnam National University
2011-2023

Daegu University
2023

Pukyong National University
2012-2022

Chung-Ang University
2020-2022

Hansung University
2020

Korea Telecom (South Korea)
2019

In this study, the dynamic response of a multiconnected floating solar panel system with vertical pontoon were studied under various scenarios. First, is modeled by combining nine single-unit cylinders (arranged in parallel, horizontally and vertically, 3 m apart from each other). Each cylinder will be considered rigid body, they are connected to other frame, so that can oscillate together. was steel pipe, hinged connector attached connecting point while it fixed at pontoon. as system, 10 ×...

10.3390/jmse10020189 article EN cc-by Journal of Marine Science and Engineering 2022-01-31

High-voltage transmission towers consist of structures that are designed to avoid the risk electric shock and prevent collapse. Hence, for efficiency, they generally as high-rise towers. The main tower posts primary structural members resist loads under various load conditions. Therefore, contribution secondary securing stiffness strength by reducing effective buckling length is an important one. However, we lack detailed member design criteria. In this study, observed effects horizontal...

10.3390/buildings13010223 article EN cc-by Buildings 2023-01-13

In this study, the authors report for first time a wafer‐scale method fabricating vertical‐aligned silicon nanotubes (SiNTs) on substrate using combination of nanoimprint lithography (NIL) and metal‐assisted chemical etching (MaCE) processes. The structural properties adhesion strength characteristics prepared SiNTs are investigated via field emission scanning electron microscope (FE‐SEM), transmission (TEM) analysis, test. And, successfully demonstrate feasibility fabricated in Li‐ion...

10.1002/adem.201600213 article EN Advanced Engineering Materials 2016-06-27

Research Findings: This study examined the learning effects of collaborative group work under heterogeneous composition among 5-year-old children, especially in terms their social skills. To this end, utilized an experimental research design wherein 3 groups differently composed dyads and a students who worked alone completed classification perspective-taking tasks. The consisted low-ability child either socially advanced, intellectually or (both) advanced peer. First, we found that children...

10.1080/10409289.2015.995567 article EN Early Education and Development 2015-02-13

A cable-stayed bridge is widely adopted to construct long-span bridges. The deformation of bridges relatively larger than that conventional bridges, such as beam and truss types. Therefore, studies regarding the monitoring systems for have been conducted evaluate performance based on measurement data. However, most required sufficient data evaluation just focused local response estimation. To overcome these limitations, Structural Responses Analysis using a Limited amount Multi-Response...

10.3390/s22103745 article EN cc-by Sensors 2022-05-14

10.1016/j.physe.2016.09.007 article EN Physica E Low-dimensional Systems and Nanostructures 2016-09-14

The bracing components in steel I-girder bridge systems are essential structural for the bridges to restrain their rotation due lateral torsional buckling (LTB). Current design specifications require be installed prevent sections from unexpectedly twisting instability. To estimate internal forces acting on elements, we can use approximate equations that provide considerably conservative values. Otherwise, it is necessary conduct a thorough finite element analysis considering initial...

10.3390/app13031499 article EN cc-by Applied Sciences 2023-01-23

Mechanical grinding and shaping of optical materials imparts damage that manifests itself as defects cracks can propagate well below the surface optic. Mitigation is necessary to preserve integrity optic relieve residual stress be detrimental its performance. Typically, a sequence subsequent polishing steps with finer grit sizes used remove damage, but process painfully slow especially for hard such silicon carbide often fails all damage. Reactive Atom Plasma (RAP<sup>TM</sup>) processing,...

10.1117/12.671969 article EN Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE 2006-06-14

Classifying galaxies into categories based on their structure has many practical applications in astronomy. In particular, large catalogues of classified galaxy images have been useful studies the universe. However, one premier data sources astronomy, Sloan Digital Sky Survey (SDSS), does not provide classification information for 50 million it contains. As there are simply too objects to classify manually, machine learning and algorithms required automate this process. This research applies...

10.1109/iccis.2013.92 article EN International Conference on Computational and Information Sciences 2013-06-01

The ratio of suicide among the elderly in Korea has nearly tripled within last 20 years. With this mind, study examined effects social exclusion on depression and suicidal ideation living elderly-only households with a focus gender differences. Social is composed economic, health, housing, education, participation, relational aspects. For study, data were gathered from 527 participants aged 65 years over. statistical methods used for analysis descriptive statistics, chi-square test, t-test,...

10.7856/kjcls.2016.27.4.831 article EN The Korean Journal of Community Living Science 2016-11-30

Auto-generated captions on YouTube have proven useful in helping viewers better understand the words being spoken.However, at times they fail to contain accurate captions.In these cases, lead confusion.The aim of this paper is identify and analyze errors auto-generated 20 commencement speeches YouTube.These were presented over a period 12 years by speakers from different walks life.The researchers selected ten male female icons.Only first 10 minutes utilized for investigation.All captioned...

10.18823/asiatefl.2020.17.1.9.143 article EN The Journal of AsiaTEFL 2020-03-31

10.5762/kais.2017.18.9.177 article EN Journal of the Korea Academia-Industrial cooperation Society 2017-01-01

The structural deformed shape (SDS) is considered an important factor for evaluating conditions owing to its direct relationship with stiffness. Recently, SDS estimation method based on displacement data from a limited number of points was developed. Although the showed good performance sufficient measured points, application on-site structures has been quite because collecting Global Navigation Satellite System (GNSS) can be expensive. Thus, development affordable certain level accuracy...

10.3390/app11094000 article EN cc-by Applied Sciences 2021-04-28

When eccentric live loads are applied on the deck overhang of steel-box girder bridges, torsional moments, comprising pure and distortional moments generated box sections. The moment bridge girders distorts cross-sections, inducing additional normal stress components causing instability sections in severe cases. Hence, it is essential to install intermediate diaphragms minimize behaviors. Although critical parameters that influence diaphragm spacings, effects load combinations have rarely...

10.3390/met11081238 article EN cc-by Metals 2021-08-04
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