A5081927157- Composite Structure Analysis and Optimization
- Structural Analysis and Optimization
- Structural Load-Bearing Analysis
- Aeroelasticity and Vibration Control
- Reconstructive Surgery and Microvascular Techniques
- Reconstructive Facial Surgery Techniques
- Topology Optimization in Engineering
- Structural Health Monitoring Techniques
- Robotics and Sensor-Based Localization
- Engineering Applied Research
- Numerical methods in engineering
- Vibration and Dynamic Analysis
- Soil Mechanics and Vehicle Dynamics
- Mechanical Behavior of Composites
- Composite Material Mechanics
- Luminescence Properties of Advanced Materials
- Bladed Disk Vibration Dynamics
- Mechanical Engineering and Vibrations Research
- Nonlocal and gradient elasticity in micro/nano structures
- Advanced Vision and Imaging
- Dynamics and Control of Mechanical Systems
- Piezoelectric Actuators and Control
- Structural Analysis of Composite Materials
- Agriculture and Farm Safety
- Hand Gesture Recognition Systems
Korea Advanced Institute of Science and Technology
2005-2025
Pennsylvania State University
1997-2024
Korea Institute of Science and Technology
2014-2024
Kumoh National Institute of Technology
2015-2024
Kangwon National University
2022-2024
Asan Medical Center
2024
University of Ulsan
2024
Ulsan College
2024
Chungbuk National University
2024
American Cleft Palate-Craniofacial Association
2024
The desire to directly touch and experience virtual objects led the development of a tactile feedback device. In this paper, novel soft pneumatic actuator for providing is proposed demonstrated. suggested does not use an external air compressor but it operated by internal pressure generated electrostatic force. By using actuator, we designed glove interact with reality. finger motions are detected attached flexible piezoelectric sensors transmitted space through Bluetooth interconnecting...
Measuring high curvatures is essential in various applications such as structural engineering, medical treatment, and robotics. Herein, we present a novel ultra-high curvature sensor with an ultra-thin highly flexible structure incorporating fiber Bragg gratings (FBGs). The can measure of bidirectional bending up to 200 m-1. In addition, the multi-bend conjunction proposed calibration scheme enables accurate reconstruction curve varying curvature. sensitivity accuracy are investigated for...
Abstract Thermal perception is essential for the survival and daily activities of people. Thus, it desirable to realize thermal feedback stimulation improving sense realism in virtual reality (VR) users. For stimulus, conventional systems utilize liquid circulation with bulky external sources or thermoelectric devices (TEDs) on rigid structures. However, these are difficult apply compact wearable gear used complex hand motions interact VR. Furthermore, generating a rapid temperature...
Background Surgery for reconstruction of defects after surgery should be performed selectively and the many points must considered. The authors conducted this study to compare local flap skin graft by facial location in resection cancer. Methods patients that had received treatment Department Plastic Surgery, Gyeongsang National University. cases were analyzed according methods surgery, sex, age, tumor site, size. Additionally, compared differences aesthetic satisfaction (out 5 points)...
Abstract Among many biomaterials, gelatin methacrylate (GelMA), a photocurable protein, has been widely used in 3D bioprinting process owing to its excellent cellular responses, biocompatibility and biodegradability. However, GelMA still shows low processability due the severe temperature dependence of viscosity. To overcome this obstacle, we propose two-stage control system effectively viscosity GelMA. optimize conditions, evaluated cooling (jacket stage). Using established system, three...
An enhanced Lo–Christensen–Wu (LCW) theory is defined in the Laplace domain to predict thermo-mechanical-viscoelastic behavior of long-term composite structures. The primary objective herein systematically extract computational benefits conventional LCW and fifth-order zigzag model via mixed variational theorem (MVT). Furthermore, transform employed circumvent numerical complexity viscoelastic analysis. relationships between two fields were derived using MVT constraint equations domain....
This paper describes a new methodology for estimating the relative pose between two 2-D lidars. Scanned points of lidars do not have enough feature information correspondence matching. For this reason, additional image sensors or artificial landmarks at known locations been used to find pose. We propose novel method without any landmarks. By scanning orthogonal planes, we utilize coplanarity scan on each plane and orthogonality normals. Even if capture planes which are exactly orthogonal,...
In this note, we propose a human–computer interface glove based on flexible piezoelectric sensors. We select polyvinylidene fluoride as the material for sensors because of advantages such steady characteristic and good flexibility. The are installed in fabric by means pockets Velcro bands. detect changes angles finger joints from outputs sensors, use them controlling virtual hand that is utilized object manipulation. To assess sensing ability compare processed sensor with real camera...
In this paper, we introduce the Skellam distribution as a sensor noise model for CCD or CMOS cameras. This is derived from Poisson of photons that determine response. We show can be used to measure intensity difference pixels in spatial domain, well temporal domain. addition, parameters are linearly related pixels. property means brighter tolerate greater variation than darker enables us decide automatically whether two have different colors. apply modeling detect edges color images. The...
When a camera rotates rapidly or shakes severely, conventional KLT (Kanade–Lucas–Tomasi) feature tracker becomes vulnerable to large inter-image appearance changes. Tracking fails in the optimization step, mainly due an inadequate initial condition equal final image warping previous frame. In this paper, we present gyro-aided tracking method that remains robust under fast camera–ego rotation conditions. The knowledge of camera’s inter-frame rotation, obtained from gyroscopes, provides...
We address the problem of 6D pose estimation a textureless and shiny object from single-view 2D images, for bin-picking task. For like mechanical part, conventional visual feature matching usually fails due to absence rich texture features. Hierarchical template assumes that few templates can cover all appearances. However, appearance largely depends on its illumination. Furthermore, in task, we must cope with partial occlusions, shadows, inter-reflections.
We propose an intuitive user interaction system with virtual objects by directly using user's hands through a physics simulation. This aims to provide more direct way manipulate and interact induce realistic reactions of the in than existing methods. The key contribution this paper is model deformations two ways: global deformation hand poses local contacts objects. By models, can be manipulated better stability robustness without any predefinition methods depending on object shapes, solely...
The monoclonal antibody (MAb) against berberine, a bioactive constituent of Coptis japonica M., Phellodendron amurense R. and Hydrastis canadensis L., was produced characterized. As immunogen, the derivative 9-O-carboxymethyl berberrubine synthesized conjugated to carrier protein, bovine serum albumin (BSA). In order confirm its immunogenicity, ratio hapten in berberine–BSA conjugate determined by matrix-assisted laser desorption/ionization time flight mass spectrometry (MALDI-TOF MS). After...
Vibration analysis of composite beams is carried out by using a finite element-based formal asymptotic expansion method. The formulation begins with three-dimensional (3D) equilibrium equations in which cross-sectional coordinates are scaled the characteristic length beam. Microscopic two-dimensional and macroscopic one-dimensional (1D) obtained via method discretized applying conventional element Boundary conditions associated 1D considered to investigate end effect. It then described how...