A5054558370- Engineering Applied Research
- Prosthetics and Rehabilitation Robotics
- Robotic Path Planning Algorithms
- Muscle activation and electromyography studies
- Manufacturing Process and Optimization
- Advanced Sensor and Energy Harvesting Materials
- Metallurgy and Material Forming
- Robotic Locomotion and Control
- Robot Manipulation and Learning
- Topic Modeling
- Natural Language Processing Techniques
- Multimodal Machine Learning Applications
- Advanced machining processes and optimization
- Layered Double Hydroxides Synthesis and Applications
- Advanced Measurement and Metrology Techniques
- Soft Robotics and Applications
- Context-Aware Activity Recognition Systems
- Artificial Intelligence in Games
- Guidance and Control Systems
- Optical Polarization and Ellipsometry
- VLSI and FPGA Design Techniques
- Metal and Thin Film Mechanics
- Video Surveillance and Tracking Methods
- Electrohydrodynamics and Fluid Dynamics
- Remote-Sensing Image Classification
Agency for Defense Development
2017-2025
Sangmyung University
2021-2024
Samsung SDS (South Korea)
2020-2023
Samsung (South Korea)
2011-2023
Seoul National University
2011-2021
Sandia National Laboratories California
2021
Yeungnam University
2018-2020
Korea Institute of Robot and Convergence
2018-2019
Sogang University
2013-2018
Kanazawa University
2016-2018
This paper presents an autonomous vision-based netrecovery system for small fixed-wing unmanned aerial vehicles (UAVs). A UAV platform is constructed using various avionic sensors, and integrated with a flight control vision system. The ground operation consists of station that provide commands monitor the status. algorithm to detect recovery net bearing angle guidance explained, along discussions on techniques employed improve reliability visual detection. identification process controller...
Contextualized representations from a pre-trained language model are central to achieve high performance on downstream NLP task. The BERT and A Lite (ALBERT) models can be fine-tuned give state-of-the-art results in sentence-pair regressions such as semantic textual similarity (STS) natural inference (NLI). Although BERT-based yield the [CLS] token vector reasonable sentence embedding, search for an optimal embedding scheme remains active research area computational linguistics. This paper...
The traditional target of computer game security is mainly copy protection. emergence online games fundamentally changes the requirements for games. Although development often utilizes cutting edge technology in graphics, artificial intelligence, human interaction and programming, providers (developers or operators) do not pay much attention to techniques. In this paper, we look into failures that have happened might happen games, discuss some key issues concern providers. Specifically,...
A guidance and control system is proposed for automatic carrier landing of an unmanned aerial vehicle (UAV). To this end, the position attitude predicted by considering sea state so that UAV loop can be compensated during final approach phase. The kinematics reference trajectory are determined using touchdown position. Nonlinear laws designed based on a sliding-mode scheme to make robustly follow trajectory.
In order to obtain biomaterials with controllable physicochemical properties, hybrid composed of biocompatible biopolymers and ceramic nanoparticles have attracted interests. this study, we prepared biopolymer/ceramic hybrids consisting various natural layered double hydroxide (LDH) via an electrophoretic method. We studied the structures controlled-release properties these materials.X-ray diffraction (XRD) patterns X-ray absorption spectra (XAS) showed that LDH were formed in a biopolymer...
In physical human-machine interaction applications, the accurate measurement of interactive forces between human and machine plays a significant role. Sensors for this purpose should not only be reliable, but also soft enough to guarantee safe compliant interaction. aspect, pneumatic sensors with air chambers have often been utilized as force sensor system. Although pneumatic-based provides good compliance softness, however, it measures lumped acting on chamber, because overall pressure...
Several legged robots have been developed in recent years and proved that they are an effective transportation system on uneven terrain. In particular, quadruped regarded as a new trend robotics due to their superior gait stability robustness disturbances. More recently, many researchers making best efforts improve the locomotion speed, well robustness, of robots. The high-speed creates various challenges development actuators, mechanical design, control algorithms robot. this paper, linear...
We present an ontology-based reasoning approach for saving energy in a smart home setting where mobile phone can serve as generic sensor which collect the inhabitant's contextual data. The paper details ontology that describes domain and prototype to test system. Finally, we conclude with lessons learned from our work developing energy-aware suggestions future work.
Article Free Access Share on Effective iterative techniques for fingerprinting design IP Authors: Andrew E. Caldwell UCLA Computer Science Dept., Los Angeles, CA CAView Profile , Hyun-Jin Choi B. Kahng Stefanus Mantik Miodrag Potkonjak Gang Qu Jennifer L. Wong Authors Info & Claims DAC '99: Proceedings of the 36th annual ACM/IEEE Design Automation ConferenceJune 1999 Pages 843–848https://doi.org/10.1145/309847.310083Online:01 June 1999Publication History 20citation479DownloadsMetricsTotal...
Electret filters have been used widely to collect particles because of their low pressure drop and high collection efficiency due the electrostatic attraction between filter. However, these decreases over time charge degradation. Therefore, a unipolar charger using corona discharge was combined with an electret filter overcome this decrease. The highest particle for 70 nm, uncharged occurred fresh 34.0%, whereas neutralized had 32.6%. when were (electret field: 1.9 kV cm–1), efficiencies...
Hand gesture recognition has received considerable attention as an intuitive interaction method in recent years. This research introduces a new wearable hand system that employs pneumatic mechanomyography (pMMG) to directly monitor the wrist tendon group, which transmits muscle force fingers. The experimental findings demonstrate proposed provides raw observations proportional finger flexion force, with high <italic xmlns:mml="http://www.w3.org/1998/Math/MathML"...
The ubiquitous fashionable computer (UFC), introduced in this paper, is a wearable that allows people to exploit computing environment user-friendly manner. We present the design approach and philosophy of UFC wearable, aesthetic, intuitive. supports interoperability various communication interfaces among WLAN, Bluetooth ZigBee devices. developed wireless gesture recognition device, called i -Throw, which small enough be worn on one's finger like ring. UFC, with help can control using an...
In applications of human-robot interactions, accurate measurement interactive forces between the human and robot plays a significant role. Such sensors should not only be reliable, but also soft enough to guarantee safe compliant interaction. this aspect, pneumatic with air chambers have often been utilized as force system. Although such sensor system provides good compliance softness, however, it measures lumped acting on chamber, because is pressure change in chamber. For multi-dimensional...
A real-time midair collision avoidance algorithm using a single vision sensor is proposed. To deal with moving aircraft, the closest point of approach (CPA) adopted for conflict detection. The characteristics related to CPA and relative motions are analyzed overcome dimension problem sensor, required heading changes derived. And, time criterion also considered activation algorithm. For applications, designed be operated reactively. evaluate proposed algorithm, numerical simulations performed...
In this article, the mechanical design concept, control strategy, and gait-trajectory-generation method are introduced for a powered exoskeleton, called <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">WalkON Suit</i> , which won gold bronze medals at Cybathlon 2020. The WalkON Suit was developed based on several distinct technologies, such as high-power actuation modules, robotic legs with parallel-elastic-actuation gait-pattern generation,...
While previous watermarking-based approaches to intellectual property protection (IPP) have asymmetrically emphasized the IP provider's rights, true goal of IPP is ensure rights both provider and buyer. Symmetric fingerprinting schemes been widely effectively used achieve this goal; however, their application domain has restricted only static artifacts, such as image audio. In paper, we propose first generic symmetric technique which can be applied an arbitrary optimization/synthesis problem...