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김승리,차상목,이충욱,김동진,박병곤,이용석,박홍수,경재만,천무영,KIM, SEUNG-LEE,CHA, SANG-MOK,LEE, CHUNG-UK,KIM, DONG-JIN,PARK, BYEONG-GON,LEE, YONGSEOK,PARK, HONG SOO,KYEONG, JAEMANN,CHUN, MOO-YOUNG 한국천문학회 2016 天文學論叢 Vol.31 No.3
We have constructed a wide-field photometric survey system called as the Korea Microlensing Telescope Network (KMTNet) in 2015. It consists of three 1.6 m optical telescopes equipped with mosaic CCD cameras. Four 9k CCDs were installed on the focal plane of each telescope. In this paper, we present the crosstalk analysis of the KMTNet mosaic CCD images. The crosstalk victims caused by bright sources were visible at eight sub-images obtained through different readout ports of each CCD. The crosstalk coefficients were estimated to be several tens of $10^{-4}$ in maximum, differing from sub-image to sub-image, and the non-linearity effect certainly appeared at the victims made from saturated sources. We developed software functions to correct the crosstalk effect of the KMTNet CCD images. The software functions showed satisfying results to remove clearly most of the crosstalk victims and have been implemented in the KMTNet image processing pipeline since 2015 September.
김승리,이충욱,박병곤,차상목,이재우,이병철,김동진,이용석,구재림,Kim, Seung-Ri,Lee, Chung-Uk,Park, Byeong-Gon,Cha, Sang-Mok,Lee, Jae-U,Lee, Byeong-Cheol,Kim, Dong-Jin,Lee, Yong-Seok,Gu, Jae-Rim 한국천문학회 2012 天文學會報 Vol.37 No.2
한국천문연구원에서는 2009년부터 외계행성 탐색시스템(KMTNet; Korea Microlensing Telescope Network) 개발 사업을 수행하고 있다. 이 사업에서는 중력렌즈 방법이나 별표면 통과(Transit) 방법으로 외계행성을 탐색하기 위하여, 1.6m 광학 망원경과 3.4억 화소의 모자이크 CCD 카메라로 구성된 2도x2도의 광시야 관측시스템을 제작하고 있다. 이 시스템은 2014년까지 남반구의 칠레 CTIO(1호기), 남아공화국 SAAO(2호기), 호주 SSO(3호기)에 설치될 예정이다. 우리은하 벌지 영역을 24시간 연속 모니터링 관측하여 외계행성과 변광천체를 탐색하는 것이 핵심연구주제이다. 광시야 망원경 1호기는 미국 Tucson에 건설된 관측시설 Prototype에 설치하여 공장시험을 수행하고 있다. 망원경의 지향(pointing) 정밀도와 Lucky Imaging 방법을 이용하여 얻은 광시야 광학계 성능 등 공장시험 결과를 보고할 것이다. 또한 핵심연구주제 이외의 관측시간을 활용할 2차 연구주제를 공모하여 심사한 결과를 제시할 것이다. 아울러 모자이크 CCD 카메라 제작, 남반구 관측소 설치 준비, 대용량 자료처리 시스템 개발, 남반구 관측소 운영 계획 등 전반적인 사업 현황과 계획을 발표할 것이다.
김승리,경재만,권순길,윤재혁,KIM SEUNG-LEE,KYEONG JAE-MANN,KWON SUN-GIL,YOUN JAE-HYOUK 한국천문학회 2001 天文學論叢 Vol.16 No.1
We developed an observation program for a 2K CCD camera, which was newly attached at the SOAO (Sobaeksan Optical Astronomy Observatory) 61cm telescope. The program was designed to control the telescope as well as the CCD camera and to monitor the CCD image quality, with very easy under the window-based graphical user interface (GUI). Furthermore, applying the automated differential photometric algorithm, we can obtain the instrumental magnitudes of several variable and comparison stars in real-time. Simultaneous photometry enables us to get precise differential magnitudes of variable stars even if the weather condition is not photometric. This new observation system has been using for many astronomical observations from September, 2001.
김승리,성현철,육인수,노진형,KIM SEUNG-LEE,SEONG HYEON-CHEOL,YUK IN-SOO,NOH JIN-HYUNG 한국천문학회 1998 天文學論叢 Vol.13 No.1
We installed windscreen at the BOAO 1.8m telescope dome, in order to reduce the degradation of image Quality under strong wind larger than 8m/sec. The windscreen was designed on the basis of that installed at the MSSSO 2.3m telescope dome in Australia. We developed control system (remote control and user program) of the windscreen, being able to operate the windscreen at observation room. We tested the performance of the windscreen under strong wind of 6-15m/see. Tracking error of the telescope, especially in altitude-axis, was greatly decreased when the windscreen was used. Standard deviation of the error was estimated to be less than 0.3arcsec, which has little effect on image quality.
김승리,박남규,표태수,성환경,이시우,Kim, Seung-Ri,Park, Nam-Gyu,Pyo, Tae-Su,Seong, Hwan-Gyeong,Lee, Si-U 한국천문학회 1993 天文學論叢 Vol.8 No.1
We developed a real-time CCD photometric program for IBM PC compatibles. This program can perform several functions necessary for CCD photometry such as telescope control. filter rotation, CCD camera control and data acquisition, two-dimensional image processing, simple aperture photometry and automatic differential photometry. The image processing of a spiral galaxy M51 observed with the SNU 61cm reflector shows a well developed spiral structure. Simple aperture photometric results of 14 stars in open cluster NGC 6871 almost accorded with those from IRAF/APPHOT. And we could confirm the light variation of eclipsing binary EM Cep by simultaneous automatic differential photometry of 7stars in NGC 7160. Due to the excellence in the precision and efficiency of automatic differential photometry using CCD. this program is very useful for the study of small amplitude ${\delta}$ Sct type variables and of the photometric stability of B ${\sim}$ F type stars.
김승리 ( Seung Lee Kim ),이동희 ( Dong Hee Lee ) 대한관광경영학회 2012 관광연구 Vol.27 No.4
The travel agencies recommend customers to purchase travel package rather than a single component of travel. Also, customers choose their preferred travel package, and this makes it more easier to save the travel budget and search time. Bundling strategy, which offers two or more separate products or services together in a package at one single price from the sum of the different components` prices, is one of the most prevalent marketing practice in travel industry. This paper tested a mixed bundling strategy of travel package based on the theory of bundling. Results show that mixed bundling taken by travel agency include number of travel product items and price discount size to put in travel package. Also, explaining functional compatibility between travel products in travel package. We find that customers expected a large discount size and large number of travel product items. However, they expect low functional compatibility between travel product items.
도보관광 목적지의 이미지, 감정적 반응, 행동의도에 관한 연구 -북한산 둘레길을 중심으로-
김승리 ( Seung Lee Kim ),김혜영 ( Hye Young Kim ) 대한관광경영학회 2014 관광연구 Vol.29 No.5
Walking tourism is getting popular and many tourist participate in walking tourism. The object of this study is finding out the relational effect of destination image of walking tourism on cognitive image, affective image and behavioral intention. The data of this study was collected by questionnaire and based on Bukhansan Dulle-gil Trail tourists. A total of 270 validity sample was analyzed a frequency analysis, reliability analysis, exploratory factor analysis and correlation coefficient analysis from SPSS 21, a hypothesis through out confirmatory factor analysis and structural equation modeling from AMOS 7.0. As a result of this study, destination image of walking tourism showed a significant effect on emotional response. Also, emotional response that affected behavioral intention was significantly related.
김승리 ( Seung Lee Kim ),이동희 ( Dong Hee Lee ) 대한관광경영학회 2011 관광연구 Vol.26 No.4
The travel agencies recommend customers to purchase travel packages rather than a single component of travel. And thus, consumers choose their preferred travel package, and this makes it more easier to save the travel budget. Price bundling, which offers two or more separate products or services together in a single package at a different price form the sum of the components` prices, is one of the most prevalent marketing practice in tourism industry. This paper addresses key aspects of monopoly firm`s commodity bundling decisions which relate to the tourism industry in particular. We examine the effects of bundling on a travel agency`s optimal prices and profits under heterogeneous customer preferences.
공항 이용객의 혼잡지각이 감정적 반응과 재방문의사에 미치는 영향에 관한 연구
김승리(Seung-Lee Kim),인옥남(Ok-Nam In) 한국컴퓨터정보학회 2015 한국컴퓨터정보학회논문지 Vol.20 No.5
The object of this study is finding out the relational effect of perceived crowding of international airport on emotional response and revisit intention. The data of this study was collected by questionnaire and based on Incheon international airport visitors. A total 260 validity sample was analyzed a frequency analysis, reliability analysis, exploratory factor analysis and correlation coefficient analysis from SPSS 21, a hypothesis through out confirmatory factor analysis and structural equation modeling from AMOS 7.0. As a result of this study, visitors’ human perceived crowding of international airport and positive emotional response showed a significant effects on revisit intention.
여행사 웹사이트 품질이 고객만족과 재구매 의도에 미치는 영향
김승리(Seung Lee Kim),인옥남(Ok Nam In) 한국컴퓨터정보학회 2013 한국컴퓨터정보학회논문지 Vol.18 No.5
The Internet website has become an effective marketing vehicle for travel agencies. The objective of this study is to examine theoretical relationships between travel agency's website quality, customer satisfaction, and repurchase intention. Usable data was obtained from the 373 respondents using travel agency's website within one year. Hypotheses are tested using structural equation modeling. The results indicate that travel agency's website quality has an effect on customer satisfaction as well as repurchase intention. The impact of information quality on customer satisfaction and repurchase intention is the most important factor, followed by service quality and design quality among the factors of the quality of a travel agency's website.