- Structural Load-Bearing Analysis
- Education and Learning Interventions
- Electrical and Thermal Properties of Materials
- Online Learning and Analytics
- Gas Sensing Nanomaterials and Sensors
- Structural Behavior of Reinforced Concrete
- Educational Systems and Policies
- Transition Metal Oxide Nanomaterials
- Educational Research and Pedagogy
- Structural Engineering and Vibration Analysis
- Advanced Sensor Technologies Research
- Railway Engineering and Dynamics
- Geotechnical Engineering and Underground Structures
- Technology-Enhanced Education Studies
- Digital literacy in education
- Online and Blended Learning
- Diverse Approaches in Healthcare and Education Studies
- Innovative Educational Techniques
- Forensic and Genetic Research
- Mechanical stress and fatigue analysis
- Intelligent Tutoring Systems and Adaptive Learning
- Technology and Data Analysis
- Art Education and Development
- Calibration and Measurement Techniques
- Innovative Teaching and Learning Methods
Kyungil University
2023-2024
Korea University of Technology and Education
2012-2017
Seoul National University
2014-2017
Pennsylvania State University
2015
Keele University
2013
Yeungnam University
2001-2003
Abstract Self-regulated learning (SRL) is crucial for helping students attain high academic performance and achieve their objectives in the online context. However, learners often face challenges properly applying SRL environments. Recent developments artificial intelligence (AI) applications have shown promise supporting learners’ self-regulation by measuring augmenting SRL, but research this area still its early stages. The purpose of study to explore students’ perceptions use AI support...
Empowering K-12 teachers for personalized learning using artificial intelligence (AI) is an open challenge. AI systems often fall short of meeting the needs teachers, hindering educational process or even causing conflicts. To bridge this gap, our study aims to explore regarding AI's complementary role within classrooms. In Study 1, we conducted a focus group interview (n = 15) identify roles that envision augmenting learning. We identified eight key roles: curriculum design, development...
The cocaine-binding aptamer is unusual in that it tightly binds molecules other than the ligand was selected for. Here, we study interaction of with one these off-target ligands, quinine. Isothermal titration calorimetry used to quantify quinine-binding affinity and thermodynamics a set sequence variants aptamer. We find for quinine 30–40 times stronger cocaine. Competitive-binding studies demonstrate both cocaine bind at same site on ligand-induced structural-switching binding mechanism an...
The steel frame reinforced with shear wall is a lateral load resisting system and has higher strength performance than the concrete system. Especially, using corrugated plates in these systems improves out-of-plane stiffness flexibility deformation along corrugation. In this paper, cyclic loading test of trapezoidal-corrugated plate was performed to evaluate structural performance. hysteresis behavior energy dissipation capacity were also compared according direction plate. For test, one...
Corrugated plates are mostly processed in trapezoidal, sinusoidal and circular shapes, when used for the web of plate girder, design where has only to cover shear force, therefore, ensures a higher out-of-plane stiffness. However, geometric shape corrugated is very complex determining analysis parameters, basic data commercialization insufficient. If trapezoidal corrugations compared with each other, no flat plane different tendencies terms buckling. In particular, stress its change at...
The recent digital transformation in school education, including advancements g enerative AI and technologies, highlights the need for competence a mong teachers. This study investigates needs of pre-service elementary teachers using Importance-Performance Analysis (IPA), Borich's Needs Assessment Model, Locus Focus Model. participants were 98 first-year from University A. results showed th at perceived all four sub-competencies s highly important. Among these, sub-competency with highest...
With the increase in average life expectancy and transition to an aging society characterized by low birth rates, importance of lifelong learning has grown significantly, prompting universities expand their roles adult education. This study analyzed research trends support strategies for learners higher education through a systematic literature review. analysis focuses on annual distribution studies, objectives, types, data methods, areas learners. These findings indicate that increased...
Characteristics of thin-film NTC infrared sensors fabricated by micromachining technology were studied as a function the thickness membrane. The overall-structure thermal sensor has form Au/Ti/NTC/SiOx/(100)Si. film Mn1.5CoNi0.5O4 with 0.5 \\micron in was deposited on SiOx layer (1.2 \\micron) PLD (pulsed laser deposition) and annealed at 600–800°C air for 1 h. Au (200 nm)/Ti (100 nm) electrode coated dc sputtering. By results microstructure, X-ray analysis, post-annealed films 700°C h...
파형강판은 제형, 정현형 등의 형상으로 얇은 강판을 주름지게 가공한 것으로 두꺼운 평판을 대신하여 사용하여도 높은 면외방향의 강성을 확보할 수 있다. 또한, 아코디언효과로 축방향 강성이 거의 없어 플레이트거더의 웨브에 적용할 경우 웨브가 전단력만을 부담하는 방법으로 쉽게 설계할 그러나 파형강판의 전단좌굴은 평판과는 달리 국부좌굴과 전체좌굴 외에도 이들의 연성에 의해서도 좌굴이 발생하는 매우 복잡한 특성이 있으며, 이러한 연성좌굴에 대한 원인과 특성의 규명은 정현형의 제형보다 연구결과가 부족한 실정이다. 따라서 본 연구에서는 전단좌굴 특성과 연성좌굴이 경향에 대해서 연구하였다. 전단좌굴강도를 계산하기 위해서는 유한요소프로그램을 이용하였고 해석결과를 정해와 비교하였다. 주름의 두께와 형상 파라메타에 따른 좌굴응력 변화의 좌굴모드형상의 변화를 분석하였으며, 결과를 이론식의 결과와 비교하여 좌굴양상의 변화시점에 분석하였다. Corrugated steel plates are made...
Corrugated steel plate is a that processed to be corrugated in trapezoidal, sinusoidal or circular shapes, and has high flexibility the direction shear stiffness orthogonal from corrugation. Compared girder, this economically effective regard it can decrease self-weight when used web of girder. However, buckling pattern plates their resistance ability are different according corrugation shapes parameter. Therefore, study conducts liner analysis trapezoidal analyzes mode stress order compare...
The steel plate shear wall system is a lateral load resisting and has higher strength performance than the of concrete structures. Using corrugated plates in systems improves out-of-plane stiffness flexibility deformation along corrugation. However, various buckling behaviors are generated according to shapes it difficult predict relationship between shape behavior. In this study, cyclic loading test shallow was performed evaluate effects structural resistance force energy dissipation...
The characteristics of thin-film negative temperature coefficient resistance (NTC) thermal sensors fabricated by micromachining technology were studied as a function the thickness membrane. overall structure sensor has form Au/Ti/NTC/SiO/sub x//(100)Si. An NTC film Mn/sub 1.5/CoNi/sub 0.5/O/sub 4/ with 0.5 /spl mu/m was deposited on SiO/sub x/ layer (1.2 mu/m) PLD (pulsed laser deposition) and annealed at 600-800/spl deg/C in air for 1 hr. Au (200 nm)/Ti (100 nm) electrode coated DC...
Objectives: We evaluated the prevalence of pattern high blood pressure and effects arterial stiffness, pulse wave velocity (PWV) reflections on central aortic (CAP) in hypertensive patients with dementia. Methods: analyzed 150 dementia, investigated using 24hr ambulatory monitoring (ABPM). Among HT, classified as early morning hypertension (EMHT) (early BP: above 135/85 mmHg night-time below 120/70 mmHg), Night HT (NHT)(Daytime mmHg). And radial artery applanation tonometry, analysis was...
Residual stress of Pt/Ti thin film electrode was investigated as a function substrate temperature by using XRD and SEM. In order to develop the residual stress, sensitive structures on SiO/sub 2//Si(substrate) were fabricated. Thermally induced which originated in different thermal expansion coefficients between substrate, led dimensional change overall structure. results confirmed existence internal stresses film.
This paper aims at comparing and analyzing shear buckling characteristics between sinusoidal corrugation shape trapezoidal one. For this, I adopted the equal-length one for analytical models, analyzed their through linear analysis on its theory. Generally, shapes of corrugated steel plates are classified into local buckling, global interactive from two modes. Sinusoidal shape, unlike corrugation, does not have flat sides, which causes another tendency in mode. Especially, changes different...
철골기둥-베이스 플레이트 접합부의 파괴유형은 베이스 압축면과 인장면의 휨파괴, 앵커볼트의 인장파괴, 뽑힘, 전단파괴, 그리고 콘크리트 기초파괴 및 철골기둥의 소성힌지발생에 따른 파괴이다. 본 연구에서는 핀접합 또는 강접합으로 가정하여 설계되는 노출형 접합부가 받을 수 있는 모멘트의 크기를 구하기 위하여, 한계상태 함수를 이용하여 휨성능 파괴유형을 예측하고 실험결과와 비교하였다. 한계상태함수를 휨성능을 비교적 정확히 예측할 범위는 축력이 경우, 항복 항복으로 판별되었을 때이며 없는 플레이트의 판별된 경우이다. 파괴유형까지 같이 고려할 있으며 경우에만 한계 상태함수의 사용이 가능하다. The failure modes of steel column-base plate connection arranged on the basis AISC Design Guide-#1 and -#10 are base tension compression side flexural yielding,...
Trapezoidal-corrugated steel plate refers to a with horizontal and inclined panels that have been processed at fixed angle. When this is used in shear wall system, rigidity along the corrugation direction does not increase due its accordion effect. This also economical use because it serves as vertical stiffener. However, corrugated plates orthotropic characteristics. It easy determine shape for design their performance or hysteric behavior difficult reveal. In study, of under cyclic loading...