A5100691401- Neural Networks and Applications
- Fuzzy Logic and Control Systems
- Educational Systems and Policies
- Robotic Locomotion and Control
- Education and Learning Interventions
- Educational Research and Pedagogy
- Advancements in Semiconductor Devices and Circuit Design
- Robotic Path Planning Algorithms
- Robotics and Automated Systems
- Semiconductor materials and devices
- Muscle activation and electromyography studies
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Education, Safety, and Science Studies
- Modular Robots and Swarm Intelligence
- Technology and Data Analysis
- Robotics and Sensor-Based Localization
- Thermochemical Biomass Conversion Processes
- Mobile Agent-Based Network Management
- Domain Adaptation and Few-Shot Learning
- Control and Dynamics of Mobile Robots
- Prosthetics and Rehabilitation Robotics
- Innovation in Digital Healthcare Systems
- Biofuel production and bioconversion
- Mathematics Education and Teaching Techniques
Korea Electric Power Corporation (South Korea)
2007-2025
Sejong University
2004-2025
Korea University
2002-2024
Ansan University
2024
Inha Technical College
2013-2023
Pohang University of Science and Technology
2011-2023
Korea Post
2021-2023
Seoul National University
1993-2022
Cheongju National University of Education
2017-2022
Korea Advanced Institute of Science and Technology
2005-2022
Existing metric learning losses can be categorized into two classes: pair-based and proxy-based losses. The former class leverage fine-grained semantic relations between data points, but slows convergence in general due to its high training complexity. In contrast, the latter enables fast reliable convergence, cannot consider rich data-to-data relations. This paper presents a new loss that takes advantages of both pair- methods overcomes their limitations. Thanks use proxies, our boosts...
As the most feasible solution beyond FinFET technology, a gate-all-around Multi-Bridge-Channel MOSFET (MBCFET) technology is successfully demonstrated including fully working high density SRAM. MBCFETs are fabricated using 90% or more of processes with only few revised masks, allowing easy migration from process. Not on-target but also multiple Vt achieved in challengingly limited vertical spacing between channels. Also, reliability shown to be comparable that FinFETs. Three representative...
Referring image segmentation is an advanced semantic task where target not a predefined class but described in natural language. Most of existing methods for this rely heavily on convolutional neural networks, which however have trouble capturing long-range dependencies between entities the language expression and are flexible enough modeling interactions two different modalities. To address these issues, we present first convolution-free model referring using transformers, dubbed ReSTR....
Physiological signals contain considerable information regarding emotions. This paper investigated the ability of photoplethysmogram (PPG) to recognize emotion, adopting a two-dimensional emotion model based on valence and arousal represent human feelings. The main purpose was short term using single PPG signal pulse. We used one-dimensional convolutional neural network (1D CNN) extract features classify arousal. split into 1.1 s pulse normalized it for input personal maximum minimum values....
Cross-modal retrieval across image and text modalities is a challenging task due to its inherent ambiguity: An often exhibits various situations, caption can be coupled with diverse images. Set-based embedding has been studied as solution this problem. It seeks encode sample into set of different vectors that capture semantics the sample. In paper, we present novel set-based method, which distinct from previous work in two aspects. First, new similarity function called smooth-Chamfer...
We developed titanium nitride (TiN) based nanoelectromechanical (NEM) switch with the smallest suspension air-gap thickness ever made to date by a “top-down” complementary metal-oxide semiconductor fabrication methods. Cantilever-type NEM 15-nm-thick air gap and 35-nm-thick TiN beam was successfully fabricated characterized. The cantilever-type showed an essentially zero off current, abrupt switching less than 3mV/decade, on/off current ratio exceeding 105 in ambient. Also achieved endurance...
7nm CMOS FinFET technology featuring EUV lithography, 4 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th</sup> gen. dual Fin and 2 xmlns:xlink="http://www.w3.org/1999/xlink">nd</sup> multi-eWF gate stack is presented, providing 20% faster speed or consuming 35% less total power over 10nm [1]. fully applied to MOL contacts minimum-pitched metal/via interconnects, can reduce >25% mask steps with higher fidelity smaller CD variation. A <inf...
Outbreaks of airborne pathogens pose a major threat to public health. Here we present single-step nanocoating process endow commercial face mask filters with photobiocidal activity, triboelectric filtration capability, and washability. These functions were successfully achieved composite nanolayer silica-alumina (Si-Al) sol-gel, crystal violet (CV) photosensitizer, hydrophobic electronegative molecules 1H, 2H, 2H-perfluorooctyltriethoxysilane (PFOTES). The transparent Si-Al matrix strongly...
This work presents a novel semi-supervised learning approach for data-driven modeling of asset failures when health status is only partially known in historical data. We combine generative model parameterized by deep neural networks with non-linear embedding technique. It allows us to build prognostic models the limited amount information precise prediction future reliability. The proposed method evaluated on publicly available dataset remaining useful life (RUL) estimation, which shows...
Current commercial boilers to produce steam for heat supply or power generation require costly post-combustion CO2 capture plant reduce carbon emission. In chemical looping combustion (CLC), facility is not necessary because internally separated during fuel that made by pure oxygen supplied from solid particles called carrier (OC). CLC has been studied dozens of years cost and energy efficiency drop accompanied capture. Currently, several MWth pilot studies are ongoing globally. Korea, Korea...
Current commercial boilers to produce steam for heat supply or power generation require costly post-combustion CO2 capture plant reduce carbon emission. In chemical looping combustion (CLC), facility is not necessary because internally separated during fuel that made by pure oxygen supplied from solid particles called carrier (OC). CLC has been studied dozens of years cost and energy efficiency drop accompanied capture. Currently, several MWth pilot studies are ongoing globally. Korea, Korea...
Abstract This study is an attempt to construct and test a distress classification model for Korean companies. Utilizing sample of 34 distressed firms from the recent 1990‐1993 period matched (by industry year) non‐failed firms, we observe accuracy two models. Both models utilize measures firm size, asset turnover, solvency leverage with one available testing only on publicly traded companies applicable all public private entities. We excellent based data first years prior distress. And,...
This paper presents a novel method for embedding transfer, task of transferring knowledge learned model to another. Our exploits pairwise similarities between samples in the source space as knowledge, and transfers them through loss used learning target models. To this end, we design new called relaxed contrastive loss, which employs labels intersample relations. provides rich supervisory signal beyond class equivalence, enables more important pairs contribute training, imposes no...
Balanced and differential voltage controlled oscillators (VCOs) are investigated with analytic noise models. Fully integrated VCOs in Ku-band implemented on an InGaP-GaAs heterojunction bipolar transistor technology. The balanced VCO has higher output power lower phase-noise performance, while drawing current than the VCO. This coincides analytical expectation. shot of collector contributes less to phase (B-VCO) B-VCO shows 2-3 dB performances 90.5, -113.8dBc/Hz at offset frequencies 100...
Solid-state photoluminescence (PL) is highly important for practical optoelectronic applications. However, conventional carbon dots often suffer from fluorescence quenching induced by aggregation in a solid state, limiting their potential In this report, sterically stabilized polymeric (PCDs) (<2 nm) are prepared to achieve effective PL emission even the solid-sate composite using simple one-step hydrothermal treatment. These PCDs show unique properties of tunable color change with...