간세포암환자에서 간동맥 화학 색전술 후 발생한 리피오돌에 의한 폐렴 1예

김소이,김유리,허현미,배서은,이명원,최윤정,김고흔,김태헌,유 권,문일환 이화여자대학교 의과대학 2009 EMJ (Ewha medical journal) Vol.32 No.2

Hepatocellular carcinoma(HCC)is one of common causes of cancer-related death in Korea where the majority of HCC patients were Hepaitc B virus(HBV)carriers and have cirrhosis. Transarterial chemoembolization(TACE)is commonly applied to the treatment of multinodular HCC in Korea and careful selection of candidate is important for the risk of various side effects. Besides common side effects as fever, nausea, abdominal pain and elevation of liver enzyme, TACE may predispose to hepatic failure, ischemic cholecystitis, pulmonary embolism, cerebral embolism and pneumonitis. In previous studies, some cases of pulmonary and cerebral embolism cases were reported but lipiodol pneumonitis after TACE was rarely reported. A 65-year-old woman with a multinodular HCC associated with HBV infection, was treated with TACE. Seven days after the procedure, nonspecific respiratory symptoms such as dyspnea and dry cough developed. Chest X-ray and chest computed tomography showed diffuse ground glass opacities in whole lung fields, suggestive of lipiodol pneumonitis. After several days of supportive care with steroid administration, radiologic abnormalities and subjective symptoms were much improved, considered that the disease was compatible with lipiodol pneumonitis.

Neonatal outcomes following antenatal steroid administration in late preterm twins

( Hyun Ji Choi ),( Yae Ji Choi ),( Ye Hyun Park ),( Young Eun Lee ),( Su Been Hong ),( Jee Yoon Park ),( Kyung Joon Oh ),( Joon-seok Hong ) 대한산부인과학회 2019 대한산부인과학회 학술대회 Vol.105 No.-

Objective: To investigate the effects of antenatal steroid administration for fetal lung maturation in late preterm twin pregnancies. Methods: This retrospective cohort study included 1080 consecutive twin pregnancies who had delivered between 34+0 weeks and 36+6 weeks from June 2003 to September 2018. Fetal deaths in utero (n=24) were excluded for the analysis of neonatal outcomes. Obstetric outcomes including antenatal steroid use were reviewed. Data about neonatal outcomes including respiratory morbidities, assisted ventilator use, and other complications were collected through electronic medical records. Those outcomes were compared according to the administration of antenatal steroid. Results: In the total of 2136 neonates, 11.6% completed the administration of antenatal steroid and 0.8% received steroid, but did not complet the cycle. Among neonates who received antenatal steroid, betamethasone was used in 75.2% (200/266) and dexamethasone in 24.8% (66/266). The median gestational age for steroid administration was 33.1 weeks (range 24.3-36.6 weeks). Comparing the obstetric and neonatal outcomes according to the steroid administartion, the median value of gestation age at delivery was earlier in steroid group than the other (35.3 vs. 36.3 weeks, p<0.001). Neonatal respiratory morbidities such as respiratory distress syndrome, pneumothorax, transient tachypnea of newborn, and apnea were comparable between two groups. Low Apgar score at 1 minute and nasal continuous positive airway pressure were higher in steroid group (both p<0.05). To adjust the difference of gestational age at delivery, logistic regression with multivariate analysis was performed. The administration of steroid was not significantly associated with composite respiratory morbidities (Odds ratio 0.87, 95% Confidence interval 0.56-1.36, p=0.537). Conclusion: The antenatal steroid administration was not associated with improvement of respiratory morbidity in late preterm twins.

피처 맞춤 모델링을 통한 인기 유튜브 채널 특성 유형화 프레임워크

최보현(Bo-Hyun Choi),김고은(Go-Eun Kim),문미란(Mi-Ran Moon),박나예(Na-Ye Park),정은지(Eun-Ji Jeong),채규현(Kyu-Hyun Chae),최예림(Ye-Rim Choi) 한국HCI학회 2024 한국HCI학회 학술대회 Vol.2024 No.1

유튜브 플랫폼 및 채널 운영에 대한 관심이 점점 증가하면서 새로운 개인 유튜버들이 채널을 개설하고자 하는 동기가 높아지고 있다. 본 연구는 다양한 장르의 유튜브 채널 중 구독자가 50 만명 이상인 채널을 선정하여 채널의 토픽을 추출하고 영상 특성을 유형화하는 프레임워크를 제안함으로써, 신규 개인 유튜버들이 채널을 성공적으로 운영하는데 도움을 주고자 한다. 인기 유튜브 채널의 특성 추출을 위해 997 개의 채널 정보 데이터와 339,154 개의 영상 정보 데이터를 수집하였다. 수집한 데이터를 가공하여 영상 평균 업로드 주기, 영상 평균 길이, 쇼츠 비율이라는 특성을 정의하고 채널의 주제, 썸네일 타입, 업로드 시간대 특성을 다양한 모델링 기법을 활용하여 유형화하였다. LDA (Latent Dirichlet Allocation) 토픽 모델링을 통해 각 채널의 토픽과 키워드를 분석하였고, Faster R-CNN 모델을 사용하여 썸네일을 유형화하였다. 그리고 KL divergence 지표와 K-Means 알고리즘을 사용하여 업로드 시간대를 유형화하였다. Silhouette Score 로 확인한 결과 채널별 특성 유형화 성능이 우수하였다. 본 연구에서 제공하는 프레임워크를 통해 사용자가 선택한 토픽과 유사한 주제를 가진 인기 유튜브 채널의 다양한 특성들을 시각적으로 제공할 수 있다. 이를 통해 신규 유입자들에게 채널 운영 전략 도출에 유용한 정보를 제공할 수 있을 것이다.

초음파센서를 이용한 자율주행 안내로봇

이승빈(Seung-been Lee),조동현(Dong-hyun Jo),권지민(Ji-Min Kwon),최태준(Tae-jun Choi),김희범(Heebum Kim),강병권(Byeong-Gwon Kang) 한국정보기술학회 2022 Proceedings of KIIT Conference Vol.2022 No.12

지금 사회는 다양한 기술이 개발 융합하여 사회의 많은 도움을 주고 있다. 자율주행 기술이 주목받으며 다양한 곳에 자율주행 기술을 접목하고 있다. 배달은 무인 배달 로봇이 대신하고 자율주행 자동차 또한 지속해서 개발되고 있다. 또한 무인 단말기(Kiosk)의 도입으로 사람들은 다양한 정보와 업무처리를 키오스크를 통하여 한다. 하지만 이러한 급격한 발전과 정보화로 인한 이면도 존재한다. 본 논문에서는 기존 키오스크의 문제를 보완하고 앞서 말한 자율주행 기술을 접목하여 키오스크의 접근성을 향상할 수 있다. In these days, as various technologies have been developed and integrated, human society is getting a lot of convenient devices. Autonomous driving technology is a kind of hot issued area, and autonomous driving technology is incorporated in various places. Delivery service has been replaced by unmanned delivery robots, and autonomous vehicles are continue to be developed. In addition, with kiosks, people can process various information and work with it. However, there are some side effects due to such rapid development and change. This paper suggests a method to solve the existing kiosk problems and combines the aforementioned autonomous driving technologies, which can improve the accessibility of kiosks.

실내 환경에서의 트랙터 자동 주차를 위한 카메라 센서 기반의 트레일러 Hitch Joint Angle 검출 알고리즘

장성빈(Sung Been Jang),신희석(Hee seok Shin),김현우(Hyun woo Kim),최윤중(Yoon jung Choi),김정하(Jung Ha Kim) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11

Recently, many studies on autonomous vehicles have been conducted, and research on autonomous driving technology has been actively conducted in various fields such as multi-purpose vehicles such as camping cars. In particular, camping cars and large cargo trucks are equipped with trailers on the skin after the vehicle, which are divided into towed trailers and tractors that tow them. The steering angle of the tractor takes precedence over the movement of the trailer because the movement of the tractor and the trailer in the direction of rotation is different when driving backward when parking. Therefore, in order to implement an automatic parking system, we aim to implement an automatic parking algorithm by detecting the angle of the Hitch joint between the tractor and the trailer based on the camera sensor and sending data to determine the steering angle of the tractor.

[학생기자단 기사] 건축이 말하는 놀이터

권지현(Kwon, Ji Hyun),김용현(Kim, Yong Hyun),김주희(Kim, Joo Hee),김현지(Kim, Hyun Ji),민성빈(Min, Seong Been),이동현(Lee, Dong Hyeon),이수빈(Lee, Soo Bin),최재윤(Choi, Jae Yun) 대한건축학회 2021 建築 Vol.65 No.2

부식제 중독 환자에서 시간에 따른 내시경 합병증 비교

최진걸 ( Jin Geul Choi ),김오현 ( Oh Hyun Kim ),김현 ( Hyun Kim ),이동건 ( Dong Keon Lee ),고진 ( Jin Go ),김태훈 ( Tae Hoon Kim ),차경철 ( Kyoung Chul Cha ),이강현 ( Kang Hyun Lee ),황성오 ( Sung Oh Hwang ),차용성 ( Yong Sung C 대한임상독성학회 2014 대한임상독성학회지 Vol.12 No.2

Purpose: Endoscopy has been recommended as a primary procedure for determining the extent of damage and prognosis in patients with caustic ingestions. Endoscopy within the first 24 hours has been suggested, however, such immediate endoscopy is not always possible. Therefore, we wanted to determine complications and possible delayed sequelae after the endoscopy performed dependent on time, including less than 24 hours and more than 24 hours, after ingestion of relatively high toxic caustic agents. Methods: From January 2005 to May 2013, 105 consecutive patients were diagnosed with caustic poisoning in the emergency department of the Wonju Severance Christian Hospital. Out of 95 patients who underwent endoscopy, while excluding 49 patients who ingested sodium hypochlorite and 15 patients due to insufficient data, 41 patients were ultimately included. We compared general characteristics, complications related to endoscopy, late sequelae, total admission length, and mortality between two groups. Results: Twenty eight patients (68.3%) were diagnosed with acid ingestion. Median endoscopy time was 17.8 (IQR 9.7-36.9) hours and performed in 16 patients (39%) after 24 hours. There were no complications, such as perforation and bleeding in either endoscopy within 24 hours group or endoscopy after 24 hours group. In addition, no difference in ingested materials, endoscopy grade, or late sequelae was observed between endoscopy within 24 hours group and endoscopy after 24 hours group. Conclusion: No difference in complications and late sequelae was observed between endoscopy within 24 hours group and endoscopy after 24 hours group when endoscopy was performed based on a clinician’s assessment.

[학생기자단 기사] 건축주와 건축가의 만남의 장

권지현(Kwon, Ji Hyun),김용현(Kim, Yong Hyun),김주희(Kim, Joo Hee),김현지(Kim, Hyun Ji),민성빈(Min, Seong Been),이수빈(Lee, Soo Bin),최재윤(Choi, Jae Yun) 대한건축학회 2021 建築 Vol.65 No.5

[학생기자단 기사] 교육 공간의 새로운 물결, 아이들의 꿈을 깨우다

권지현(Kwon, Ji Hyun),김용현(Kim, Yong Hyun),김주희(Kim, Joo Hee),김현지(Kim, Hyun Ji),민성빈(Min, Seong Been),이동현(Lee, Dong Hyeon),이수빈(Lee, Soo Bin),최재윤(Choi, Jae Yun) 대한건축학회 2020 建築 Vol.64 No.10

제주도 東南方 신천沿岸域 海水의 理化學的 特性과 底質分布

崔永贊,高基源,金尙賢 濟州大學校海洋資源硏究所 1987 해양과환경연구소 연구논문집 Vol.11 No.-

신천 沿岸域에서 1986年 6月부터 1987年 3月까지 調査된 沿岸海水의 物理的 特性과 營養鹽類및 低質分布를 要約해 보면, 1) 夏季에 평화천과 포구에서 陸水가 流出되며, St.7 및 St.1에서 예상되는 湧泉水가 沿岸域으로 流出되기는 하지만 流出水가 外海域으로 멀리 확장되지 못하고 있었다. 2) 冬季에는 全 調査 海域이 34.40 ?? 以上의 高鹽水와 1月의 15.1℃, 3月 15.3℃ 以上의 高鹽水가 全 水層을 구성하고 있는데, 이러한 海水는 對馬暖流水의 直接的인 流入이 冬季에 두드러지게 나타나는 結果로 볼 수 있다. 3) 亞窒酸∼窒素는 0.10∼0.70 ㎍-at/ℓ의 농도 폭이였으며, 夏季에 낮고 冬季에 높은 傾向과 전분공장앞, 浦口, 河川 앞 海域에서 높은 편이었다. 4) 窒酸∼窒素는 1月에 가장 낮은 농도였으며 대체적으로 0.3∼3.5 ㎍-at/ℓ의 높은 濃度폭을 나타내고 있다. 5) 燐酸∼燐 및 窒酸∼窒素는 11月에 全 調査期間中 가장 낮은 濃度와 均一한 分布를 보이는 것으로 보아 外洋水와 내만수의 完全混合이 이루어지고 있다고 생각된다. 6) 調査地域의 堆積物相은 자갈함유모래(gravelly sand), 자갈함유씰트질모래(grevelly silty sand), 자갈함유뻘질모래(slightly gravelly muddy sand)로 細分되나 자갈함유모래가 主로 分布한다. 7) 調査地域 堆積物의 平均粒度는 -1.37∼1.5φ였으며, 分級은不良(平均.1.41φ)하고 positive skewed한 傾向을 나타냈다. 8) 海水中의 總浮遊物質의 含量은 表層에서 平均 11.33mg/ℓ, 5m 層은 12.26mg/ ℓ로 나타났으며, 平和川 주변지역에서가 비교적 높은 함량치를 나타냈다. The physical characteristics and the distribution of nutrient and bottom sediments were surveyed from June 1986 to March 1987 in Sincheon coastal area and the results could be summarized as follows. During Summer, fresh waters were inflowed into the sea from Pyoung Hwa Stream and nearby port. Although some expected spring waters are flowed out of site 7 and site 1, the waters could not be extended far away into off-shore area. During Winter, high salinity of more than 34.40?? and high temperature water of 15.1℃ and 15.3℃ in January and March respectively were showed all over the water strata. Such water characteristics seem to be the result of influences by Tsushima Warm Currents direct, inflow in Winter. The distribution of nitrite-nitrogen was lowest in June and July (0.10∼0.20 ㎍-at/ℓ) while highest in March (0.30∼0.70 ㎍-at/ℓ). Nitrate-nitrogen was lowest in January and showed rather high concentration with the range of 0.3∼3.5 ㎍-at/ℓ.Phosphate-phosphorous and nitrate-nitrogen showed the lowest concentration together with homogenous distribution in November throughout the all survey period. This seems to indicate the complete mixing of out sea water and in shore water during this month. The sediments could be subdivided into three textural classes, namely gravelly Sand, gravelly silty Sand, and slightly gravelly muddy Sand, but gravelly Sand are the main component. The average grain-size of sediments in surveyed area was -1.37∼1.5φand poorly sorted (average 1.41φ) and showed the tendency of positively skewed. The concentration of total suspended matter in the surveyed sea water were average 11.33 ㎎/ℓand 12.26 ㎎/ℓ in the surface and 5m below surface and showed comparatively concentration near Pyoung Hwa Stream area.