A5101592616- Meteorological Phenomena and Simulations
- Atmospheric aerosols and clouds
- Air Traffic Management and Optimization
- Aerospace and Aviation Technology
- Wind and Air Flow Studies
- Advanced Battery Materials and Technologies
- Radio Frequency Integrated Circuit Design
- Biosensors and Analytical Detection
- Advanced MIMO Systems Optimization
- Optical Network Technologies
- Refrigeration and Air Conditioning Technologies
- Advancements in Battery Materials
- Advanced Sensor Technologies Research
- Advanced biosensing and bioanalysis techniques
- Advanced battery technologies research
- Advanced Biosensing Techniques and Applications
- Advanced Photonic Communication Systems
- Heat Transfer and Optimization
- Advanced Optical Network Technologies
- Aviation Industry Analysis and Trends
- E-commerce and Technology Innovations
- Advanced Adaptive Filtering Techniques
- Advanced Fiber Laser Technologies
- Diverse Interdisciplinary Research Innovations
- Ionosphere and magnetosphere dynamics
Samsung (South Korea)
2024
Kwangwoon University
2024
Seoul National University
2024
Yonsei University
2014-2022
Ajou University
2020-2021
Government of the Republic of Korea
2020
Inha University
2018-2020
Incheon Medical Center
2020
National Institute of Meteorological Sciences
2017
Colorado State University
2017
Aluminum-ion batteries are considered to be a promising post lithium-ion battery system in energy storage devices because aluminum is earth-abundant, has high theoretical capacity, and of low cost. We report on the chemical activities stabilities chloroaluminate anions [AlnCln+1]− with metal using different mole ratio AlCl3 1-ethyl-3-methylimidazolium chloride. The morphological changes Al surface investigated as function dipping time electrolyte, revealing that locally attacked by followed...
Abstract Based on a convective gravity wave drag parameterization scheme in numerical weather prediction (NWP) model, previously proposed near-cloud turbulence (NCT) diagnostics for better detecting near convection are tested and evaluated by using global situ flight data outputs from the operational NWP model of Korea Meteorological Administration one year (from December 2016 to November 2017). For comparison, 11 widely used clear air (CAT) currently NWP-based aviation forecasting systems...
Abstract A global Korean deterministic aviation turbulence guidance (G-KTG) system and a probabilistic forecast (G-KPT) are developed using outputs from the operational Global Data Assimilation Prediction System of Korea Meteorological Administration, performance skill systems evaluated against in situ flight eddy dissipation rates (EDRs) recorded for one year (September 2018–August 2019). G-KTG G-KPT consider clear-air (CAT) mountain wave diagnostics, while additionally considers near-cloud...
The Wi-Fi 7 standard (IEEE 802.11be) was developed to meet the growing need for increased capacity and high throughput. However, new, more demanding requirements RF/analog circuits, including an extended bandwidth of 320MHz with 4K-QAM, result in complexity circuit design address issues linearity, noise, bandwidth, power consumption. Despite these challenges, promises faster reliable wireless connectivity. This paper presents a transceiver that demonstrates excellent linearity smallest...
© 2017 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses).CORRESPONDING AUTHOR: Jung-Hoon Kim, jung-hoon.kim@noaa.gov
Korean Peninsula has high potential for occurrence of aviation turbulence. A Turbulence Guidance (KTG) system focused on the Peninsula, named Korean-Peninsula KTG (KP-KTG) system, is developed using resolution (horizontal grid spacing 1.5 km) Local Data Assimilation and Prediction System (LDAPS) Korea Meteorological Administration (KMA). The KP-KTG constructed first by selection 15 best diagnostics turbulence method probability detection (POD) with pilot reports (PIREPs) LDAPS analysis data....
The electrolyte containing benzene additive in Al-ion battery exhibited the best electrochemical properties with a high specific capacity at an extremely current rate.
Sources of aviation turbulence vary through the seasons, especially in East Asia including Korean peninsula, associated primarily with changes jet/front system and convective activities. For this reason, a seasonal Turbulence Guidance (KTG) (seasonal-KTG) is developed present study by using pilot reports (PIREPs) analysis data operational Unified Model (UM) Korea Meteorological Administration (KMA) for two years between June 2011 May 2013. Twenty best diagnostics each season are selected...
Recently, the needs of system performances such as working speed and processing accuracy in machine tools have been increased. Especially, increment generates harmful heat at both moving part handicrafts. The is a main drawback to progress processing. Hence, cooler control temperature inevitable for tools. In general, two representative schemes, hot-gas bypass variable compressor, adopted water system. this paper, comparisons according schemes were conducted detail. Each...
This study aims to suggest a simple migratory cell monitoring method in the Transwell system by utilizing retroreflective Janus microparticles (RJPs) as an optical probe. The RJP could be internalized on cells without compromising viability and can registered bright spots within body inducing retroreflection from nonspectroscopic light sources. Conventional probes (e.g., fluorophores, chromogens, nanoparticles) have been extensively studied applied across diverse platforms Boyden chamber,...
A time compression multiplexing (TCM)-based wavelength division passive optical network (WDM-PON) using a reflective semiconductor amplifier (RSOA) is proposed, and its feasibility experimentally demonstrated. In the proposed system, RSOA pre-amplifies 10 Gb/s downstream signal modulates output, wavelength-locked to signal, with 1.25 upstream simultaneously. The sensitivity of improved by about 3 dB through RSOA. signals have power penalties 0.1 1.1 dB, respectively, at bit error rates...
<title>Abstract</title> The aim of this study was to design the user experience for a head-mounted display (HMD)-based universal virtual shopping mall by conducting literature analysis and employing video ethnography techniques. Subsequently, prototype developed validate outcomes. Despite growing trend contactless shopping, with various brands launching platforms, these often lack elements experiences that users find satisfying. To address gap, we analysed users' offline using ethnography....
Unexpected encounters with aviation turbulence, a hazardous weather phenomenon affecting aircraft operations, can cause casualties and damage. The Republic Of Korea Air Force (ROKAF) currently&#160;provides turbulence forecast information for the East Asia/Korean Peninsula area based on Force-Weather Research Forecasting (KAF-WRF) model-derived diagnostics. However, because is not provided global area, operational forecasting support to overseas areas, whose importance increasing under...
Aviation turbulence, one of the major weather hazards in aviation industry, is normally classified by generation sources, as follows: convectively induced turbulence (CIT), clear-air (CAT) that not directly associated with convective systems, but mainly caused various atmospheric instabilities near jet stream, and mountain wave (MWT) related to vertically propagating waves generated low-level flows across mountainous areas. To reduce damage unexpected encounters, we developed Korean...
This paper deals with precise analytical state equation modeling of a variable speed refrigeration system (VSRS) for optimum control in space. The VSRS is described as multi-input and multi-output (MIMO) system, which has two controlled variables inputs. First, the Navier-Stokes mass flow rate were applied to each component basic cycle build dynamic model. model, represented by differential equation, was transformed into formula. Next, full-order observer built estimate all compose an...
Loop-mediated isothermal amplification (LAMP) is an outstanding method for molecular diagnostics, as the rapid, specific, and sensitive of target genes possible. However, it necessary to measure fluorescence in quantitative analysis LAMP products, so a sophisticated optical setup required. This study tried develop novel sensing that can quantify analytes with simple equipment, such nonspectroscopic white light CMOS camera. To achieve this, retroreflective Janus particle (RJP) probe specially...
A TCM-based WDM-PON using a single RSOA is proposed to improve the cost-effectiveness in highly asymmetric traffic conditions and its feasibility experimentally demonstrated. It reduces component count increases sensitivity for downstream signals, yet meets bandwidth requirement.