A5101957727- Balance, Gait, and Falls Prevention
- Prosthetics and Rehabilitation Robotics
- Musculoskeletal pain and rehabilitation
- Stroke Rehabilitation and Recovery
- ZnO doping and properties
- Traditional Chinese Medicine Studies
- Healthcare and Venom Research
- Ga2O3 and related materials
- Vibration and Dynamic Analysis
- Geotechnical Engineering and Underground Structures
- Gas Sensing Nanomaterials and Sensors
- Effects of Vibration on Health
- Geotechnical Engineering and Soil Stabilization
- Fluid Dynamics Simulations and Interactions
- Thin-Film Transistor Technologies
- Spinal Cord Injury Research
- Particle accelerators and beam dynamics
- Non-Invasive Vital Sign Monitoring
- Particle Accelerators and Free-Electron Lasers
- Engineering Applied Research
- Photocathodes and Microchannel Plates
- Muscle activation and electromyography studies
- Advanced Vision and Imaging
- Cerebral Palsy and Movement Disorders
- Gyrotron and Vacuum Electronics Research
Clemson University
2022-2024
Ulsan University Hospital
2013-2023
Ulsan College
2013-2023
University of Ulsan
2013-2023
Virginia Tech
2017-2021
Ajou University
2017
Kyung Hee University
2009-2015
Korea Electronics Technology Institute
2015
Chonnam National University
2009-2014
Dunsan Korean Medicine Hospital
2014
In this study, we developed a novel heart rate (HR) monitoring approach in which measure the pressure variance of surface ear canal. A scissor-shaped apparatus equipped with piezoelectric film sensor and hardware circuit module was designed for high wearability to obtain stable measurement. proposed device, converts in-ear pulse waves (EPW) into electrical current, enhances EPW suppresses noise. real-time algorithm embedded performs morphological conversions make more distinct...
A variationally coupled BEM–FEM is developed which can be used to analyse dynamic response, including free-surface sloshing motion, of 3-D rectangular liquid storage tanks subjected horizontal ground excitation. The tank structure modelled by the finite element method and fluid region indirect boundary method. By minimizing a single Lagrange function defined for entire system, governing equation with symmetric coefficient matrices obtained. To verify newly method, analysis results are...
Sit-stand desks continue to be a popular intervention for office work. While previous studies have reported changes in subjective measures, there is limited understanding of how sit-stand work differs from prolonged sitting or standing work, biomechanical standpoint. The objective this study was investigate the effects sitting, standing, and paradigm on trunk stiffness, low back discomfort, muscle activation. Twelve healthy participants performed 2 h computer-based tasks each protocol, three...
Abstract Background The prevalence of anxiety in patients undergoing total knee arthroplasty (TKA) and its association with postoperative functions are well known; however, the levels or anxiety-related characteristics unknown. This study aimed to investigate clinically significant state geriatric TKA for osteoarthritis (OA) evaluate experienced by these pre- post-operatively. Methods retrospective observational recruited who had undergone OA using general anesthesia between February 2020...
This paper presents real-time signal processing algorithm for detection of onsets and peaks in Photoplethysmogram (PPG) waveform. Algorithm relies on the analysis amplitude, slope inter-beat intervals. The presented consists four stages characterizing PPG Preprocessing stage involves transformation since original waveform is less impulsive robust. In second stage, seeks valid pulse transformed complying with amplitude threshold interval. On pulses, then searches backward forward onsets....
Recently, there has been a significant advancement in text-to-image diffusion models, leading to groundbreaking performance 2D image generation. These advancements have extended 3D enabling the generation of novel objects from textual descriptions. This evolved into NeRF editing methods, which allow manipulation existing through conditioning. However, techniques faced limitations their due slow training speeds and use loss functions that do not adequately consider editing. To address this,...
Films of hydrogenated amorphous silicon carbide (a-SiC:H) have been prepared by a glow discharge decomposition from gas mixtures C3H8-SiH4-H2 and CH4-SiH4-H2, in order to examine the effect hydrocarbon gases on structural optical properties these films. To study influence hydrogen those propane-based films, films deposited at different substrate temperatures (Ts) are systematically investigated using infrared (IR) ultraviolet-visible absorption spectroscopies. By observing change intensities...
Arsenic-doped p-type ZnO (p-ZnO:As) thin films were deposited by the magnetron sputtering technique. High-resolution low-temperature photoluminescence (PL) spectra of revealed emissions at 3.35 eV and 3.32 eV, representing neutral-acceptor-bound exciton transition free electron to acceptor level transition. Electroluminescence p–n diodes fabricated from p-ZnO:As/n-GaN heterostructure showed UV emission about 380 nm yellowish visible lights centered 600–650 nm, which resembled PL spectrum...
Objectives : The purpose of this study was to obtain some knowledge concerning the scalp acupuncture treatment on patients with dementia for future practice and research from clinical studies in China. Methods literatures were searched using data base-China Academic Journals(CAJ) (2001-2011). Results We found out 1 case study, 17 randomized controlled trials(RCT) which met inclusion criteria most studies. There 3 types acupuncture-applying method, cho-si acupuncture(焦氏頭鍼法), combination...
While occupational exoskeletons have shown the potential to control and prevent work-related musculoskeletal disorders, there is limited information available that can guide users in making informed decisions about adopting exoskeletons. Hence, we developed a virtual reality (VR) program enables perform tasks required real-life scenarios visualize beneficial negative effects of using an exoskeleton. As first step, simulated specific passive back-support exoskeleton (BSE; backX™) for...
Many previous studies reported that the second derivative of photoplethysmography (SDPTG) is a rational indicator arterial stiffness. In order to obtain SDPTG, (PPG) and operator are required. Since PPG contain very high frequency components due quantization effect, pulse signal smoothing has be preceded before calculation derivative. Over past few years, several techniques have been proposed applied for assessing SDPTG. Although these show performance in assessment, they require higher...
Context: Nardostachys chinensis Batalin (Valerianaceae) has been used in Korean traditional medicine to elicit stomachic and sedative effects. However, the anti-leukemic activities of N. have not well examined.