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Gwanghee Kim,Yoojin Lee,Jin Sun You,Wontae Hwang,Jeewon Hwang,Hwa Young Kim,Jieun Kim,Ara Jo,In ho Park,Mohammed Ali,Jongsun Kim,Jeon-Soo Shin,Ho-Keun Kwon,Hyun Jik Kim,Sang Sun Yoon 대한면역학회 2023 Immune Network Vol.23 No.4
Evidence suggests that the human respiratory tract, as with the gastrointestinal tract, has evolved to its current state in association with commensal microbes. However, little is known about how the airway microbiome affects the development of airway immune system. Here, we uncover a previously unidentified mode of interaction between host airway immunity and a unique strain (AIT01) of Staphylococcus epidermidis, a predominant species of the nasal microbiome. Intranasal administration of AIT01 increased the population of neutrophils and monocytes in mouse lungs. The recruitment of these immune cells resulted in the protection of the murine host against infection by Pseudomonas aeruginosa, a pathogenic bacterium. Interestingly, an AIT01-secreted protein identified as GAPDH, a well-known bacterial moonlighting protein, mediated this protective effect. Intranasal delivery of the purified GAPDH conferred significant resistance against other Gram-negative pathogens (Klebsiella pneumoniae and Acinetobacter baumannii) and influenza A virus. Our findings demonstrate the potential of a native nasal microbe and its secretory protein to enhance innate immune defense against airway infections. These results offer a promising preventive measure, particularly relevant in the context of global pandemics.
Kim, Ki Yeon,Lee, Gwanghee,Yoon, Minsang,Cho, Eun Hye,Park, Chan-Sik,Kim, Moon Gyo Korean Society for Molecular and Cellular Biology 2015 Molecules and cells Vol.38 No.6
By combining conventional single cell analysis with flow cytometry and public database searches with bioinformatics tools, we extended the expression profiling of thymic stromal cotransporter (TSCOT), Slc46A2/Ly110, that was shown to be expressed in bipotent precursor and cortical thymic epithelial cells. Genome scale analysis verified TSCOT expression in thymic tissue- and cell type- specific fashion and is also expressed in some other epithelial tissues including skin and lung. Coexpression profiling with genes, Foxn1 and Hoxa3, revealed the role of TSCOT during the organogenesis. TSCOT expression was detected in all thymic epithelial cells (TECs), but not in the $CD31^+$endothelial cell lineage in fetal thymus. In addition, ABC transporter-dependent side population and Sca-$1^+$ fetal TEC populations both contain TSCOT-expressing cells, indicating TEC stem cells express TSCOT. TSCOT expression was identified as early as in differentiating embryonic stem cells. TSCOT expression is not under the control of Foxn1 since TSCOT is present in the thymic rudiment of nude mice. By searching variations in the expression levels, TSCOT is positively associated with Grhl3 and Irf6. Cytokines such as IL1b, IL22 and IL24 are the potential regulators of the TSCOT expression. Surprisingly, we found TSCOT expression in the lung is diminished in lung cancers, suggesting TSCOT may be involved in the suppression of lung tumor development. Based on these results, a model for TEC differentiation from the stem cells was proposed in context of multiple epithelial organ formation.
Kobe 지진파형으로 최적화된 압축센싱 기술의 실험적 평가
허광희 ( Heo Gwanghee ),김용석 ( Kim Yongsuk ),김경민 ( Kim Kyungmin ),전준용 ( Jeon Joonryong ) 한국구조물진단유지관리공학회 2019 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.23 No.1
In this paper, an experimental study on the data compression sensing technique optimized by Kobe earthquake waveform was performed to efficiently obtain the dynamic response of the civil structure. The optimized compression sensing technique is embedded in the wireless sensing system. Also, the dynamic response(acceleration) of the cable-stayed bridge model was acquired and the validity of the compression sensing technique was evaluated. The data compression sensing technique optimized by Kobe earthquake waveform was able to efficiently obtain the dynamic response of a flexible civil structure under 10Hz.
허광희(Heo, Gwanghee),김영범(Kim, Youngbeom),서상구(Seo, Sanggu),전승곤(Jeon, Seunggon),이재훈(Lee, Jaehoon),김대혁(Kim, Daehyuck) 한국방재학회 2021 한국방재학회논문집 Vol.21 No.4
본 연구는 공동주택에서 화재 발생 시 거주자의 신속한 피난을 유도하여 인명 및 재산 피해를 저감하는 스마트 피난 시스템을 개발하였다. 스마트 피난 시스템은 피난시설에 적재될 수 있는 적재물을 상시 검출하여 안전하게 대피를 할 수 있는 환경과 물리적으로 최상의 대피 여건을 제공한다. 또한, 화재 시 거주자와 관리자에게 신속하게 화재정보를 자동으로 전파하여 초동대피를 유도하고, 119 상황실로 보고하여 화재를 조기에 진압할 수 있는 기능을 제공한다. 스마트 피난 시스템은 피난에 사용되는 안전사다리와 피난대피처의 방해물을 검출하는 이상물 검출시스템, 그리고 거주자와 관리자뿐만 아니라 119에 신속하게 화재정보를 알리는 통신시스템으로 구성되어있다. 안전사다리의 효과적인 성능을 검증하기 위해서 제안한 실물 크기의 안전사다리를 제작하여 구조적인 성능과 신속한 사용성을 검증하였다. 또한, 피난대피처의 공간을 상시 확보하기 위해서 피난대피처에 비접촉센서와 통신 모듈을 사용하여 실시간으로 정확하게 피난 방해물을 이상물로 검출하는지의 가능성을 확인하였다. 마지막으로 화재 시 거주자와 관리자에게 신속하게 화재정보를 송신하며 대피를 돕고 신속한 화재진압을 위해서 화재정보를 119에 신고하는 기능을 검증하였다. 이 결과 본 스마트 피난 시스템은 화재 시 신속 정확한 정보제공으로 안전하면서도 효과적인 대피를 유도하며, 화재진압 시 초동대응에 매우 유용한 시스템임을 입증하였다. A smart evacuation system is developed herein to reduce damage to lives and property by inducing rapid evacuation of the residents in the event of apartment fires. The smart evacuation system provides a safe evacuation environment and the best physical evacuation conditions by detecting the loads to be applied to evacuation facilities at all times. In addition, fire information is automatically disseminated to the residents and managers during a fire for initial evacuation, and the function for early fire extinguishing is enabled via report to the 119 situation room. The smart evacuation system comprises a safety ladder for evacuation, an ideal detection system to detect obstructions in the evacuation facilities, and a communication system to quickly inform authorities, residents, and managers of a fire. To verify effective performance of the safety ladder, real safety ladders were constructed and their structural performance and usability were verified. In addition, to ensure their permanent space in evacuation facilities, we verified that obstructions to evacuation were accurately detected as anomalies in real time using contactless sensors and communication modules. Finally, the fire information was sent to residents and managers in case of a fire to assist evacuation as well as reported to 119 for rapid suppression. Thus, we demonstrate that the smart evacuation system allows safe and effective evacuation with fast and accurate information in the event of a fire and is useful for initial response for fire suppression.
건설구조물의 건전도 모니터링을 위한 무선 통합유지관리 시스템(WUMS)의 실험적 검증
허광희 ( Heo Gwanghee ),김용석 ( Kim Yongsuk ),김충길 ( Kim Chunggil ),전승곤 ( Jeon Seunggon ),전준용 ( Jeon Joonryong ) 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.22 No.2
This study is aimed at developing a wireless unified-maintenance system (WUMS) that would satisfy all the requirements for a disaster preventive SHM system of civil structures. The WUMS is designed to measure diverse types of structural responses in realtime based on wireless communication, allowing users to selectively use WiFi RF band and finally working in standalone mode by means of the field-programmable gate array (FPGA) technology. To verify its performance, the following tests were performed: (i) A test to see how far communication is possible in open field, (ii) a modal test on a bridge to see how exactly characteristic real-time dynamic responses are of structures. Finally, the WUMS is proved valid as a SHM, and its outstanding performance is also proven.
통계적 패턴 인식 기술을 이용한 교량의 실시간 손상평가 기술 개발
허광희 ( Heo Gwanghee ),김충길 ( Kim Chunggil ),방건혁 ( Bang Geonhyeok ),김용석 ( Kim Yongsuk ),고병찬 ( Ko Byeongchan ) 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.22 No.2
In this paper, real-time damage assessment technology was developed for detection the damage of bridges in real time and the performance of the developed technology was verified by vibration test. Real-time damage assessment technology was developed by combining statistical pattern recognition technology and simulation technology. In order to verify the developed technology, the earthquake response acquisition experiment was conducted according to the cable damage of the model cable-stayed bridge. As a result, it was confirmed that the developed real-time damage assessment technology can provide information on the location of damaged cable.
TMS320C6678을 적용한 소형 Radio Frequency 추적레이다용 고속 실시간 신호처리기 설계
김홍락,현효영,김윤진,우선걸,김광희,Kim, Hong-Rak,Hyun, Hyo-Young,Kim, Younjin,Woo, Seonkeol,Kim, Gwanghee 한국인터넷방송통신학회 2021 한국인터넷방송통신학회 논문지 Vol.21 No.5
소형 Radio Frequency 추적레이다는 표적에 대하여 전천후 Radio Frequency 신호 처리를 통하여 표적을 식별하고 주요 표적에 대하여 표적을 탐색, 탐지하여 추적하는 Radio Frequency 센서를 보유한 추적시스템이다. 본 논문에서는 전천후 Radio Frequency를 이용하여 표적 정보를 획득하여 실시간 신호처리를 통하여 표적을 식별하기 위한 고속의 멀티코어 DSP인 TMS320C6678과 XILINX FPGA(Field Programmable Gate Array)가 탑재된 보드 개발의 내용을 설명한다. DSP, FPGA 선정과 신호처리를 위한 DSP-FPGA 결합 아키텍처에 대하여 제안하고 또한 고속의 데이터 전송을 위한 SRIO의 설계에 대하여 설명한다. The small radio frequency tracking radar is a tracking system with a radio frequency sensor that identifies a target through all-weather radio frequency signal processing for a target and searches, detects and tracks the target for the major target. In this paper, we describe the development of a board equipped with TMS320C6678 and XILINX FPGA (Field Programmable Gate Array), a high-speed multi-core DSP that acquires target information through all-weather radio frequency and identifies a target through real-time signal processing. We propose DSP-FPGA combination architecture for DSP and FPGA selection and signal processing, and also explain the design of SRIO for high-speed data transmission.