STO 생태계 조성과 금융 API 연동 기술 검증(PoC)

차동민,류창보,류재철,김근영 한국정보처리학회 2024 정보처리학회지 Vol.31 No.1

한국인 시신경염 환자의 임상 양상 및 고용량 스테로이드 치료 효과

차동민,김성준,김정훈,정호경,유영석,Dong Min Cha,Seong Joon Kim,Jeong Hun Kim,Ho Kyung Choung,Young Suk Yu 대한안과학회 2011 대한안과학회지 Vol.52 No.9

Purpose: To investigate the clinical manifestation and response to high-dose steroid therapy in Korean optic neuritis patients. Methods: We retrospectively reviewed the medical records of 13 patients diagnosed with optic neuritis who were treated with high-dose steroid and who were followed-up for more than three months in Seoul National University Hospital between January 2005 and December 2008. Results: Pain on extraocular movement (EOM) and disc swelling were observed in 61% (8/13) patients diagnosed with optic neuritis. Visual acuity (VA) improved to more than 20/40 in 77% (10/13) of patients after high-dose steroid therapy. The patients who resolved within one month recovered VA a mean of 18 days after onset. The recovery period had nothing to do with the initial time of high-dose steroid therapy. Conclusions: Pain on EOM was less frequently observed and disc swelling was more frequent in Korean patients than have been reported in Caucacian patients. The recovery period of optic neuritis was not influenced by the initial time of high-dose steroid therapy. J Korean Ophthalmol Soc 2011;52(9):1083-1088

선천성 거대 결장증 1예

차동민,신성희,김필,김용석,장검현 釜山醫師會 1989 釜山醫師會誌 Vol.25 No.5

A Comparative Study of the Effect of Fibrin Glue versus Sutures on Clinical Outcome in Patients Undergoing Pterygium Excision and Conjunctival Autografts

차동민,김경환,최혁진,김미금,위원량 대한안과학회 2012 Korean Journal of Ophthalmology Vol.26 No.6

Purpose: To compare the effect of using fibrin glue or 10-0 nylon sutures on the clinical outcome of patients undergoing pterygium excision and conjunctival autografting. Methods: We retrospectively reviewed the medical records of 52 eyes from 46 patients who underwent pterygium excision and conjunctival autografting and were followed up for more than 3 months. The operation duration, postoperative inflammation, complications, and recurrence rates were compared between groups of 20 patients (22 eyes) for whom fibrin glue was used (fibrin glue group) and 26 patients (30 eyes) for whom suturing was performed with 10-0 nylon (suture group) in pterygium excision and conjunctival autografting. Results: The operation duration was 27.71 (5.22) minutes in the fibrin glue group and 43.30 (8.18) minutes in the suture group (p = 0.000). Seven days after the operation, the fibrin glue group showed milder conjunctival inflammation than the suture group (p = 0.000). Postoperative complications and corneal recurrence rates were not statistically different between the two groups. Conclusions: The use of fibrin glue in pterygium excision with conjunctival autografting is likely to be a more effective, safer procedure than suturing.

안와의 캐슬만씨병 2예

차동민,김남주 대한안과학회 2009 대한안과학회지 Vol.50 No.5

목적: 안와를 침범하는 Castleman씨병의 증례를 경험하였기에 문헌 고찰과 함께 보고하고자 한다. 증례요약: 2년 전 목림프절 생검에서 Castleman씨병으로 진단된 52세 남자 환자가 4~5개월 전에 시작된 우안 움직임 시의 불편감을 주소로 내원하였다. 우안 안구돌출이 관찰되어 시행한 안와 전산화단층촬영에서 이전보다 크기가 증가된 안와 하측부위의 종괴가 관찰 되었고, 조직검사를 통해 Castleman씨병임을 확진하였다. 57세 남자 환자가 3개월 전 시작된 좌측 눈꺼풀 부종으로 내원하여 시행한 안와와 흉부 전산화단층촬영에서 상외측 안와의 종괴 및 종격동 림프절의 크기 증가가 관찰되었고 종격동 림프절의 조직검사를 통해 Castleman씨병임을 확진하였다. 결론: 52세 남자 환자는 스테로이드 치료를 시작하였고, 57세 남자 환자는 경과 관찰하기로 하였다. Purpose: To report two cases of multicentric Castleman’s disease involving the orbital area. Case summary: A 52-year-old man presented with discomfort of the right eye on eyeball movement that began 4~5 months ago. He had been diagnosed as Castleman’s disease upon the biopsy of his neck lymph nodes 2 years ago. Proptosis was found in his right eye, and orbital computed tomography revealed an enlarged mass in the inferior orbit compared to the former image. An incisional biopsy confirmed Castleman’s disease. A 57-year-old man presented with left eyelid swelling that began 3 months ago. Orbital and chest computed tomography revealed a mass in the left superotemporal orbit and the enlarged lymph nodes of the mediastinal area. Castleman’s disease was confirmed by biopsy of the lymph nodes in the mediastinal area. Conclusions: Steroid therapy was prescribed for the 52-year-old man. The 57-year-old man was placed under close observation.

Silent Giant Cell Arteritis in an Elderly Korean Woman

차동민,이태승,최기영,양희경,황정민 대한안과학회 2013 Korean Journal of Ophthalmology Vol.27 No.3

Giant cell arteritis (GCA) is a rare disease among Asians. Arteritic anterior ischemic optic neuropathy, which accompanies GCA, has not yet been reported in Koreans. Diagnosis of GCA is difficult if typical symptoms other than visual loss are absent. Here, we report a case of an 83-year-old Korean woman presenting with sudden visual loss in both eyes (oculus uterque, OU). Her visual acuities included perception of light in the right eye (oculus dexter, OD) and perception of hand motion in the left eye (oculus sinister, OS). The results of the Hardy-Rand-Rittler test and Ishihara test showed total dyschromatopsia OU. The Goldmann perimetry test revealed a total field defect OD and paracentral island OS. Fundus examination revealed chalky-white disc swelling OU. Other systemic symptoms and signs were unremarkable. The erythrocyte sedimentation rate, C-reactive protein and platelet count were highly elevated. Temporal artery biopsy revealed multiple lymphocytes and multinucleated giant cells in the arterial media layer. To our knowledge, this is the first report of GCA in a Korean that has been confirmed with temporal artery biopsy. In conclusion, silent GCA can occur in Koreans, and hence, elderly patients presenting with chalky-white disc swelling, and corresponding laboratory findings must be evaluated for GCA.

엘리트 태권도 선수의 컨디션 조절전략

차동민,장덕선 한국스포츠학회 2012 한국스포츠학회지 Vol.10 No.2

온라인 동영상 시청 플랫폼의 정보구조 탐색 - 웹드라마 사례를 중심으로

차동민,성정환 한국콘텐츠학회 2019 한국콘텐츠학회논문지 Vol.19 No.9

Purpose of this study is enhancing usability of online video platform by analyze link-depth and advertisement frequency. In this study, researcher checked market share of video platform which publishing web-drama, and compare their link-depth and advertisement frequency. As a result, access to the latest content has two to three link-depth. So it does not worsen usability. but, if contents doesn't show on main page or search result, it requires more than five to six steps. Image advertisement show up more than twice on every platform. ‘Youtube’ and ‘Naver TV’ show up pre-roll video advertisement in video player before offering contents. In this video platform information structure, directory searching needs high link-depth level and advertisement frequency. It will increase user’s bounce rate and decrease return visit rate. So researcher suggests prototype using drop-down menu to reduce link-depth and enhance information structure. 본 연구의 목적은 웹드라마가 사용하고 있는 온라인 동영상 플랫폼들을 대상으로 접근단계 분석과 광고 노출빈도 측정을 통해, 동영상 플랫폼의 사용성을 개선하는 것이다. 본 연구에서는 현재 웹드라마 시장의 점유율을 확인하고 접근단계와 광고회피를 바탕으로 채널간의 비교를 실시하였다. 그 결과 최신 콘텐츠에 대한 접근단계는 2~3단계이며 접근단계로 인하여 사용성이 낮아지지 않았다. 하지만 메인페이지나 검색결과에 노출되지 않아 디렉토리 검색이 필요한 경우 5~6단계의 접근단계가 필요하였다. 광고는 모든 플랫폼에서 2개 이상의 이미지광고가 표시되며, 유튜브와 네이버tv는 동영상 플레이어 내부에서 영상시작 전 프리롤(Pre-roll) 광고를 표시하는 것을 확인했다. 위와 같은 동영상 플랫폼 정보구조 상에서 디렉토리 검색을 하는 경우 높은 접근단계와 많은 광고노출로 사용자의 이탈률이 증가하고, 재방문 빈도가 낮아질 것으로 예상된다. 이를 개선하기 위해 드롭다운(Drop-Down) 메뉴를 활용하여 접근단계를 줄이는 정보구조 개선 프로토타입을 제안한다.

황반을 침범하지 않은 망막분지정맥폐쇄에 동반된 황반부종 치료 2예

차동민(Dong Min Cha),이선호(Sun Ho Lee),이혜진(Hye Jin Lee),정진호(Jin Ho Jeong) 대한안과학회 2016 대한안과학회지 Vol.57 No.2

목적: 황반을 침범하지 않은 망막분지정맥폐쇄에 동반된 황반부종 치료 증례를 보고하고자 한다. 증례요약: (증례 1) 64세 여성이 우안 상이측의 황반을 침범하지 않은 망막분지정맥폐쇄에 따른 황반부종을 보였다. 유리체강내 베바시주맙 주입술과 정맥폐쇄 부위에 레이저 광응고술을 시행하였고, 황반부종 소실과 함께 경성삼출물의 축적을 보였다. 경성삼출물이 흡수되며 교정시력은 0.2에서 0.5로 향상되었다. (증례 2) 53세 남성이 좌안 상이측 혈관궁 바깥쪽의 망막분지정맥폐쇄에 따른 황반부종을 보였다. 유리체강내 베바시주맙 주입술을 2회 시행하였고, 정맥폐쇄 부위에 레이저 광응고술을 시행하였다. 황반부종 소실과 함께 경성삼출물의 축적을 보였으나, 경성삼출물이 흡수되며 교정시력은 0.1에서 0.4로 호전되었다. 두 증례 모두 황반부종의 재발을보이지 않았다. 결론: 황반을 침범하지 않은 망막분지정맥폐쇄에 동반된 황반부종을 베바시주맙 및 레이저 광응고술 복합 요법으로 치료한 증례를 보고한다 Purpose: To report two cases of patients treated for macular edema associated with extramacular branch retinal vein occlusion(BRVO). Case summary: (Case 1) A 64-year-old female presented with macular edema (ME) associated with superotemporal extramacular BRVO. The ME was resolved but hard exudate (HE) deposited after combined therapy of intravitreal bevacizumab injection and laser photocoagulation of the BRVO area. Best corrected visual acuity (BCVA) improved from 0.2 to 0.5 following absorption of HE. (Case 2) A 53-year-old male presented with ME associated with extramacular BRVO outside the superior vascular arcade. ME was treated with 2 monthly injections of bevacizumab and laser photocoagulation in the BRVO area. Although HE deposited after resolution of ME, it was absorbed and BCVA improved from 0.1 to 0.4. The ME did not recur in either patient. Conclusions: We report 2 cases managed with combined therapy of intravitreal bevacizumab injection and laser photocoagulation for ME associated with extramacular BRVO.

CNN을 이용한 IR 영상으로부터의 운전자 시선 인식 기술

차동민(Dongmin Cha),윤종민(Jongmin Yoon),김대진(Daijin Kim) 한국정보과학회 2018 한국정보과학회 학술발표논문집 Vol.2018 No.6