A5022023306- Stroke Rehabilitation and Recovery
- Balance, Gait, and Falls Prevention
- Wave and Wind Energy Systems
- Cerebral Palsy and Movement Disorders
- Fuel Cells and Related Materials
- Muscle activation and electromyography studies
- Maritime Navigation and Safety
- Hydrogen Storage and Materials
- Optical Imaging and Spectroscopy Techniques
- Electric Motor Design and Analysis
- Fluid Dynamics Simulations and Interactions
- Ergonomics and Musculoskeletal Disorders
- Photoacoustic and Ultrasonic Imaging
- Wind Energy Research and Development
- Ship Hydrodynamics and Maneuverability
- Advancements in Battery Materials
- Underwater Vehicles and Communication Systems
- Non-Invasive Vital Sign Monitoring
- Semiconductor materials and devices
- Supercapacitor Materials and Fabrication
- Coastal and Marine Dynamics
- Advanced battery technologies research
- Sensorless Control of Electric Motors
- Analytical Chemistry and Sensors
- Molecular Junctions and Nanostructures
Institute for Advanced Engineering
2024
Daegu Haany University
2021-2022
Seoul National University of Science and Technology
2021
Jeonbuk National University
2005-2020
Virginia Tech
2002-2020
Korea Advanced Institute of Science and Technology
2010-2017
Kootenay Association for Science & Technology
2017
Daegu Gyeongbuk Institute of Science and Technology
2014-2015
Government of the Republic of Korea
2015
Northwestern University
2013
A phosphotungstic acid coupled GO–Nafion membrane showed an enhanced fuel cell power density at 80 °C under 20% RH, compared with Nafion-212.
Abstract Frequent data transfers between Internet‐of‐Things (IoT) sensors and cloud servers consume energy lead to latency—a bottleneck for ubiquitous computing. To reduce the need such enormous transfers, combined function of IoT near‐sensor artificial neural networks can process properly before they are transferred servers. Herein, energy‐efficient memristor crossbar arrays demonstrated image recognition tasks that potentially adopted sensors. The adoption selector‐free device with a...
Local heat/mass transfer measurements are conducted to investigate the effects of rib arrangements and gap positions on discrete rib. The combined flows ribs secondary examined in order promote uniformity distributions, as well augment transfer. A square channel with rectangular is used for stationary duct test. rib-to-rib pitch height ratio 8, attack angle 60°. width same width, two positions, which upstream downstream gaps, parallel cross arrangements. naphthalene sublimation method...
Abstract NOTE: The first page of text has been automatically extracted and included below in lieu an abstract Session 2620 Web-Based Java Applets for Teaching Engineering Mechanics Kamal B. Rojiani1, Yong Y. Kim2 Rakesh K. Kapania2 1 2 Charles E. Via Dept. Civil Engineering, Aerospace Ocean Virginia Polytechnic Institute State University, Blacksburg VA 24061 A series novel Web-based instructional units teaching structural mechanics to undergraduate students are developed. centered on...
Enhancement of interdiffusion in GaAs/AlGaAs quantum wells due to anodic oxides was studied. Photoluminescence, transmission electron microscopy, and well modeling were used understand the effects intermixing on shape. Residual water oxide found increase intermixing, though it not prime cause for intermixing. Injection defects such as group III vacancies or interstitials considered be a driving force Different current densities experimental range create had little effect
An obstacle in applying artificial neural networks (NNs) to system identification problems is that the dimension and size of training set for NNs can be too large use them effectively solving a problem with available computational resources. To overcome this obstacle, principal component analysis (PCA) used reduce inputs without impairing integrity data orthogonal arrays (OAs) select smaller number sets efficiently represent given behavior system. PCA OAs are here two parameter different...
Artie cial neural networks (ANNs) are employed in solving inverse problems damage detection structures, as well detection, using optical imaging, of an anomaly a light-diffusive media, such human tissue. Both these problems, namely, identifying the parameters damaged structure and representative properties tissue, require highly complex problems. The (NNs) for both similar, method found suitable one type problem can be applied other problem. In identie cation problem, natural frequencies...
A new methodology for radiation induced real-time fault detection and diagnosis, utilizing FPGA-based architectures was developed. The includes a full test platform to evaluate circuit while under an algorithm detect diagnose locations within using Triple Design Modular Redundancy (TDTMR). An analysis of the system established injection. Additionally functional gamma irradiation performed assess effectiveness method. diagnosis capable detecting errors by switching dynamically during FPGA....
A special type of metal hydride (SMH) actuator has been developed and the pressure response inside studied against changing temperature controlled by Peltier elements. The newly SMH is characterized its smaller size, lower weight, noiseless operation, compliance similar to that human bodies. simple actuator, consisting powdered hydrogen-absorbing alloys as a source mechanical power, elements thermal source, cylinder with bellows element, developed. An assembly copper pipes, which good...
In this paper, a new rehabilitation training system was developed to improve equilibrium sense control by combining virtual reality technology with fixed exercise bicycle. order evaluate the effectiveness of system, twenty normal healthy adults participated as test subjects in investigation influence different parameters on sensory control. Several factors including path deviation, cycling time, velocity, center pressure were evaluated and analyzed quantitatively. Also, we investigated...
We have developed a lower limb orthosis with pneumatic rubber actuator, which is intended for the assistance and enhancement of muscular activities elderly. For this purpose, we investigated characteristics without in gait motion on treadmill. To find out muscle activities, analyzed subject flexing extending knees measured power limb. The subjects wearing were instructed to perform treadmill sitting position monitoring electromyogram activities. used C8051F Target Board (SILICON...
It is necessary to restrict the damage area for enhancement of ship survivability under internal blast a Semi-Armor Piercing (SAP) warhead inside ship's compartment, and develop design guidance performance verification technique Blast Hardened Bulkhead (BHB) protection its diffusion adjoining compartment continuous flooding. The objective this study shock response analysis BHB using MMALE (Multi-Material Arbitrary Lagrangian Eulerian) formulation FSI (Fluid-Structure Interaction) LS-DYNA...
When an offshore platform topside is constructed in a yard, it should be loaded-out onto transportation vessel. The load-out operations, however, involves many uncertainties, such as changing the load (weight of platform) on LSF or possible structural failures. evaluated, even small failure member welding connection can lead to instability, catastrophic collapse. This study presents newly developed method for analyzing reliability LSF. probability calculated by using AFOSM assessment along...
Because ocean wave propagates along water surface, energy resource is measured in the unit of line density (kW/m). It indicates that output a Wave Energy Converter (WEC) proportional to its front width when we consider scaling-up device. will be problem commercialization scaled-up WEC because cost device increases with size higher pace. With above consideration, authors proposed rotary type converter. drag vertical axis turbine rotational lying horizontally on surface and parallel front. To...
To provide more rational design solutions at conceptual level, axiomatic method has been applied to solve critical part of a new engineering problem called Mobile Harbor. In the implementation, Harbor, functional harbor system that consists vessel with container crane approaches ship anchored in open sea and establishes secure mooring between two vessels carry out loading unloading containers. For this moving be able operate successfully, reliable safe strategy moor maintain constant...
Abstract The commercial-scale deployment of floating offshore wind (FOW) projects is expected to take place in a diverse range sites that may differ significantly from existing fixed-bottom projects. FOW farms are particularly sensitive the water depth and meteorological oceanographic (metocean) geotechnical conditions at project site due wave-induced system motions loads as well anchoring constraints imposed by seafloor conditions. Uncertainty around will permeate through all aspects...