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대용량 상품 이미지 데이터베이스에서 모바일 비주얼 탐색의 설계 및 구현
김태연,박기성,한용구,이영구,TaeYeon Kim,Kisung Park,Yongkoo Han,Young-Koo Lee 한국빅데이터서비스학회 2014 한국빅데이터서비스학회 논문지 Vol.1 No.1
스마트폰이 고성능의 컴퓨팅 파워와 카메라를 장착함에 따라 사용자들은 언제 어디서나 이미지 기반의 검색을 할 수 있게 되었다. 이미지 기반 질의는 이미지 데이터베이스에서 질의 이미지와 유사한 이미지들을 찾는 기술이다. 그러나 스마트폰과 같은 모바일 디바이스에서는 특징점 추출, 특징점 매칭 등의 고비용 연산으로 실시간 서비스 제공이 어려운 문제가 있다. 최근 이와 같은 문제를 해결하기 위하여 서버 기반 검색, 인덱스 활용 등 다양 한 연구들이 수행되고 있다. 본 논문에서는 스마트폰에서 모바일 비주얼 탐색의 최신 기술들을 이용하여 대용량 이미지 데이터베이스로부터의 효율적인 이미지 기반 검색 프레임워크를 설계 및 구현한다. 애플리케이션은 모바일 비주얼 탐색이 실용적으로 활용할 수 있는 마켓에서 상품 이미지 검색으로 하였다. Smartphones equipped with powerful computing resources and digital cameras provide image-based search at any time, and anywhere. Image-based search takes images of objects as queries and finds similar images by matching the query image to similar images on an image database. However, mobile devices such as smartphones suffer from long running time due to expensive tasks such as extracting and matching feature points. Recently many studies for mobile visual search have been proposed, which efficiently search images by adopting server based search and index techniques. In this paper, we design and implement a mobile visual search framework that efficiently finds similar images to the query image on large image databases by using state-of-the-art techniques. We have implemented the proposed framework on product search in market systems concerning the practical application for the mobile visual search.
김태연,성현경,Kim, Taeyeon,Sung, Hyunkyung 대한예방한의학회 2015 대한예방한의학회지 Vol.19 No.2
Objective : In order to establish the scientific research methods to prove the effects of korean traditional medicine about ultraviolet induced skin damage, we investigated the research on ultraviolet induced skin damage in the korean traditional medicine field. Method : We searched the papers about ultraviolet induced skin damage published in the journals of korean traditional medicine. The searching end date was on June 29, 2015. Results : Thirty papers about ultraviolet induced skin damage were found. Twenty nine papers were experimental research, and one paper was clinical research. Sixty-three percent of papers were written the years after 2011. Fifty-seven percent of papers were published in the korean journal of oriental physiology & pathology and the journal of korean oriental medical ophthalmology & otolaryngology & dermatology. Main outcome measures of experimental research were anti-wrinkle effects, anti-oxidant capacity, anti-apoptosis effects, whitening effects and anti-inflammatory effects. Conclusion : We need more systematic research in order to prove the effects of korean traditional medicine, and use extensively.
김태연(Kim. Taeyeon),김창남(Kim. Chang-Nam),홍구표(Hong. Gu-Pyo),김광호(Kim. Kwang-Ho),노지웅(Rho. Ji-Woong),김병선(Kim. Byung-Seon) 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1
The Purpose of this study was to analyze the smoke elimination performance and evacuation time in an arcade of traditional market. In this study, the effect of the opening for the ventilation about the smoke eliminating performance was analyzed using CFD (Computational Fluid Dynamics) method. And also the evacuation time was analyzed according to the height of the building. The opening of the arcade is very important design factor to control the smoke movement.
혼합 온난화 가스 분리용 이온성 액체-고분자 분리막 이종 접합 구조체 및 이의 제조방법
김태연 ( Taeyeon Kim ),신예지 ( Ye Ji Shin ),황병봉 ( Byeng Bong Hwang ),윤석준 ( Seog Joon Yoon ),정인경 ( In Gyung Jung ) 한국환경기술학회 2023 한국환경기술학회지 Vol.24 No.1
The production of global warming gas has been raised. Refrigerant gases, those have been utilized to air conditioner, refrigerator, etc., used have been substituted to global warming effect free gases gradually, but most of the gases have been discarded. Currently used R-134a/R-1234yf mixed gas cannot be purified through fractional distillation process due to their differences of boiling points under 10 ℃, instead, the alternative separation process is required. In this work, by modifying single mixed ionic liquid polymeric membrane, we adopted heterojunction membrane composed of ionic liquid/polymeric membrane bilayer structure. Through the utilization of the heterojunction membrane into gas separation experimental apparatus, we proposed the separation of R-1234yf from the R-134a/R-1234yf mixture with up to 10.34 Lㆍm<sup>-2</sup> ㆍmin<sup>-1</sup> separation velocity. By simply introducing versatile ionic liquid component in the bilayer structure the facile modification strategy could be utilized for various mixed gas separation process.
김태연(Kim Taeyeon),이윤규(Lee Yun-Gyu),한길원(Han Kilwon) 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2
The one of the most important method to deal with the IAQ problem is the field measurement to evaluate the room condition quantitatively. The pollutant concentration of the point concerned depends on the each pollutant source and the room air distribution, etc. The concentration distribution have to be considered in the field measurement for reliable analysis. The concentration of room center is regarded as the representative value because of increasing time and cost. But since generally there is difference between averaged and room center concentration, the room center concentration should be carefully used for IAQ design.<br/> In this paper, contribution ratio of pollutant sources of the room center is analyzed. The contribution ratio could be used how the room center concentration could be considered as the representative value of the room.
상위제어 시나리오를 고려한 이중4절기구 자동 테일게이트 기구해석
김태연(Taeyeon Kim),김두정(Doojung Kim),홍성태(Seongtae Hong) 대한기계학회 2024 大韓機械學會論文集A Vol.48 No.3
최근 기술의 발전으로 자동차의 좌석과 도어를 비롯해 여러 기계요소가 자동화되고 있으며 다양한 기업에서의 상용화도 이루어지고 있다. 보다 효율적인 조립 공정과 컴팩트한 하드웨어 제약에 대한 요구를 충족하기 위해, 기존에 구동부를 회전축에 직접 부착하는 방식에서 벗어나 기구최적화를 통해 자동 테일게이트의 작동 시스템 메커니즘을 설계하는 방법이 요구되었다. 본 논문에서는 구동부를 차체가 아닌 테일게이트의 프레임에 부착할 수 있는 이중4절기구를 사용하는 메커니즘을 설계하였다. 또한, 설계된 메커니즘을 수학적으로 분석하여 메커니즘을 최적화할 수 있는 가능성을 확보하고 제안한 기구를 상위제어에도 수행할 수 있는 가능성을 확인하였다. Recent advancements in automatic tailgate technology have led to its commercialization. To meet the demands for efficient assembly processes and more compact hardware constraints, there was a need to design the mechanism of the actuation system for the automatic tailgate in a different way, departing from the direct attachment approach. In this study, we designed a mechanism that employs a dual four-bar linkage structure, allowing the attachment of the actuator to the frame of the tailgate instead of the vehicle body. Furthermore, by mathematically analyzing the designed mechanism, we secured the potential for optimizing the mechanism and ability to implement advance control methods.