Photoplethysmography in Wearable Devices: A Comprehensive Review of Technological Advances, Current Challenges, and Future Directions by Kwang Bok Kim, Hyun Jae Baek

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Modeling Acoustic Emission Due to an Internal Point Source in Circular Cylindrical Structures by Kwang Bok Kim, Bong Ki Kim, Jun-Gill Kang

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Machine Learning-Based Predicted Age of the Elderly on the Instrumented Timed Up and Go Test and Six-Minute Walk Test by Jeong Bae Ko, Jae Soo Hong, Young Sub Shin, Kwang Bok Kim

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Analytical Modeling of Acoustic Emission Due to an Internal Point Source in a Transversely Isotropic Cylinder by Kwang Bok Kim, Bong Ki Kim, Sang Guk Lee, Jun-Gill Kang

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Association of Core Muscle Endurance with Weekly Workout Time, Speed, and the Symmetry of Frontal Core Motion during Indoor Walking and Cycling by Ju-Hyun Park, Ae-Ryeong Kim, Si-Hyun Kim, Kwang Bok Kim, Kyue-Nam Park

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The Validity of Wireless Earbud-Type Wearable Sensors for Head Angle Estimation and the Relationships of Head with Trunk, Pelvis, Hip, and Knee during Workouts by Ae-Ryeong Kim, Ju-Hyun Park, Si-Hyun Kim, Kwang Bok Kim, Kyue-Nam Park

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Synergistic enhancement of hydrogel adhesion via tough chemical bonding and physical entanglements by Yongheum Choi, Deok-Hyun Cho, Sungjin Kim, Hyun-Jong Kim, Tae Joo Park, Kwang Bok Kim, Young Min Park

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Highly Porous SnO₂/TiO₂ Heterojunction Thin-Film Photocatalyst Using Gas-Flow Thermal Evaporation and Atomic Layer Deposition by Sungjin Kim, Hyeon-Kyung Chang, Kwang Bok Kim, Hyun-Jong Kim, Ho-Nyun Lee, Tae Joo Park, Young Min Park

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The Characteristics of Acoustic Emissions Due to Gas Leaks in Circular Cylinders: A Theoretical and Experimental Investigation by Kwang Bok Kim, Jun-Hee Kim, Je-Eon Jin, Hae-Jin Kim, Chang-Il Kim, Bong Ki Kim, Jun-Gill Kang

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