Youngjun Lee

The Effects of Design Thinking-Based Artificial Intelligence Education Using Generative AI on Middle School Students‘ Computational Thinking

Suhun Lim, Seung-Ju Hong, Seong-Won Kim, Youngjun Lee

본 연구는 디자인 씽킹(DT) 기반 AI 교육의 공감 단계에서 현장의 제약을 생성형 AI(GAI)로 극복하고, 컴퓨팅 사고력(CT)에 미치는 영향을 규명했다. 이를 위해 중학생 117명에게 8차시 교육을 적용하였으며, 공감 단계에서 실험집단은 GAI로 가상 페르소나 제작 및 실시간 인터뷰를, 통제집단은 동료 학생 간 역할극을 수행했다. …

Charge Carrier Localization in Monolayer Ws2 Influenced by Hbn Microbubbles

Taegeon Lee, Youngjun Lee, Chang‐Hee Cho, Heesuk Rho

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Effect of Artificial Intelligence Convergence Education Using ChatGPT on Computational Thinking of High School Students in Korea

Seung-Ju Hong, Youngjun Lee, Seong-Won Kim

Artificial intelligence (AI) has been integrated into various fields, accelerating innovation in existing ones. Consequently, AI has been employed in education to drive changes such as learning analytics and personalized learning. Recently, the development of generative AI has further transformed the educational …

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Comparison of the Shear Bond Strength between a Self-Etching Ceramic Primer and Conventional Bonding Systems Used in Bonding Metal Brackets to a Ceramic Surface

Youngjun Lee, Jae Hyun Park, Jong‐Moon Chae, Na-Young Chang

Introduction: The purpose of this study was to compare the shear bond strength (SBS) of metal brackets bonded to ceramics with a self-etching ceramic primer (Monobond Etch & PrimeTM) versus other bonding systems, and to evaluate changes to the ceramic surface with …

Enhancement of the Anticancer Ability of Natural Killer Cells through Allogeneic Mitochondrial Transfer

Seong-Hoon Kim, Mi Jin Kim, Mina Lim, Jihye Kim et autres

An in vitro culture period of at least 2 weeks is required to produce sufficient natural killer (NK) cells for immunotherapy, which are the key effectors in hematological malignancy treatment. Mitochondrial damage and fragmentation reduce the NK cell immune surveillance capacity. Thus, …

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Engineering of mesenchymal stem cells to express cytosine deaminase gene with a selecable marker gene.

Haeyoung Suh‐Kim, Mingyeong Kim, Youngjun Lee, Narayan Bashyal et autres

e14050 Background: Suicide genes induce apoptosis not only in the cell itself but also in surrounding cells. The former is called the suicide effect and the latter is called the bystander effect. Two major suicide gene strategies currently pursued, cytosine deaminase (CD)/5-fluorocytosine …

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Informatics and Artificial Intelligence (AI) Education in Korea: Situation Analysis Using the Darmstadt Model

Dagyeom Lee, Ji-Yeon Hwang, Youngjun Lee, Seong-Won Kim

The Korean government has implemented various policies to support software (SW) and artificial intelligence (AI) education to secure national competitiveness since 2015. As the social impact of AI technology increased, AI became an integral component of the computer education curricula. SW and …

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Polarization-controlled amplified spontaneous emission in 2D semiconductors with birefringent microcavity

Jin‐Woo Jung, Hyeon‐Seo Choi, Tae‐Jin Lee, Youngjun Lee et autres

We report on the polarization-controlled amplification of excitonic emission in the monolayer WS2 coupled with ZnO microcavity. From polarization-resolved micro-photoluminescence spectroscopy and numerical modeling, we found that the polarization of WS2 excitonic emission can be tailored by the whispering gallery modes of …

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Observation of coupled states in monolayer WS2 double quantum wells

Youngjun Lee

Delivery of exogenous mitochondria via centrifugation enhances cellular metabolic function

Mi Jin Kim, Jung Wook Hwang, Chang‐Koo Yun, Youngjun Lee et autres

Abstract Mitochondria are essential organelles involved in the maintenance of cell growth and function, and have been investigated as therapeutic targets in various diseases. Recent studies have demonstrated that direct mitochondrial transfer can restore cellular functions of cells with inherited or acquired …

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Introduction

Youngjun Lee

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Effect of Die Geometry on Drawdown Force of Polypropylene at Capillary Extrusion

Jiraporn Seemork, Monchai Siriprumpoonthum, Youngjun Lee, Shogo Nobukawa et autres

ABSTRACT Drawdown force, defined as the force needed to stretch a polymer melt uniaxially at capillary extrusion, is investigated using isotactic polypropylene. In this study, we focus on the effect of die geometry on the drawdown force. As similar to the swell …

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